QT-CD250

CONTENTSPage

IMPORTANT SERVICE NOTEST (FOR U.S.A. ONLY) .................................................................................................... 2SPECIFICATIONS ............................................................................................................................................................. 2NAMES OF PARTS ........................................................................................................................................................... 3OPERATION MANUAL ...................................................................................................................................................... 4DISASSEMBLY .................................................................................................................................................................. 5REMOVING AND REINSTALLING THE MAIN PARTS ..................................................................................................... 5ADJUSTMENT ................................................................................................................................................................... 7NOTES ON SCHEMATIC DIAGRAM .............................................................................................................................. 11TYPES OF TRANSISTOR ............................................................................................................................................... 11SCHEMATIC DIAGRAM .................................................................................................................................................. 12WIRING SIDE OF P.W.BOARD ....................................................................................................................................... 14WAVEFORMS OF CD CIRCUIT ...................................................................................................................................... 16TROUBLESHOOTING (CD SECTION) ........................................................................................................................... 17FUNCTION TABLE OF IC ................................................................................................................................................ 21PARTS GUIDE/EXPLODED VIEWPACKING OF THE SET (FOR U.S.A. ONLY)

• In the interests of user-safety the set should be restored to itsoriginal condition and only parts identical to those specified shouldbe used.

QT-CD250

SERVICE MANUAL

SHARP CORPORATION

No. S2014QTCD250/

This document has been published to be usedfor after sales service only.The contents are subject to change without notice.

QT-CD250

– 2 –

FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFERTO THE OPERATION MANUAL.

BEFORE RETURNING THE AUDIO PRODUCT(Fire & Shock Hazard)Before returning the audio product to the user, perform thefollowing safety checks.1. Inspect all lead dress to make certain that leads are not

pinched or that hardware is not lodged between the chassisand other metal parts in the audio product.

2. Inspect all protective devices such as insulating materials,cabinet, terminal board, adjustment and compartmentcovers or shields, mechanical insulators etc.

3. To be sure that no shock hazard exists, check for leakagecurrent in the following manner.

* Plug the AC line cord directly into a 120 volt AC outlet.* Using two clip leads, connect a 1.5k ohm, 10 watt resistor

paralleled by a 0.15µF capacitor in series with all exposedmetal cabinet parts and a known earth ground, such asconduit or electrical ground connected to earth ground.

* Use a VTVM or VOM with 1000 ohm per volt, or higher,sensitivity to measure the AC voltage drop across theresistor (See diagram).

* Connect the resistor connection to all exposed metal partshaving a return path to the chassis (antenna, metal cabinet,screw heads, knobs and control shafts, escutcheon, etc.)and measure the AC voltage drop across the resistor.

IMPORTANT SERVICE NOTES (FOR U.S.A. ONLY)

All check must be repeated with the AC line cord plug connectionreversed.Any reading of 0.3 volt RMS (this corresponds to 0.2 milliamp.AC.) or more is excessive and indicates a potential shockhazard which must be corrected before returning the audioproduct to the owner.

SPECIFICATIONS

Specifications for this model are subject to change withoutprior notice.

TO EXPOSEDMETAL PARTS

CONNECT TOKNOWN EARTHGROUND

TEST PROBE

0.15 µ F

1.5k ohms10W

VTVMAC SCALE

● GeneralPower source: AC 120 V, 60 Hz

DC 9 V [ "D" size (UM/SUM-1, R20or HP-2) battery × 6]DC 4.5 V [ "AA" size (UM/SUM-3,R6 or HP-7) battery × 3 for backupmemory]

Powerconsumption: 12 WOutput power: FTC; 2.0 W min. RMS per channel

into 4 ohms from 150 Hz to 20kHz, with no more than 10 % totalharmonic distortion.RMS; 2.3 W/CH(DC operation, 10 % T.H.D.)

Speakers: 4" (10 cm) full-range speaker x 2Outputterminals:

Headphones; 16-50 ohms(recommended; 32 ohms)

Dimensions: Width; 15-3/4" (400 mm)Height; 6-1/4" (158 mm)Depth; 8-3/8" (212 mm)

Weight: 6.0 lbs. (2.7 kg) without batteries

● Compact disc playerType: Compact discSignalreadout:

Non-contact, 3-beam semi-conduc-tor laser pickup

Audiochannels: 2Quantization: 16-bit linear quantizationFilter: 8-times oversampling digital filterD/A converter: 1-bit D/A converterWow andflutter:

Unmeasurable(less than 0.001% W. peak)

● Radio

Frequencyrange:

FM; 87.5 - 108 MHzAM; 530 - 1,720 kHz

● Tape recorder

Frequencyresponse: 50 - 14,000 Hz (Normal tape)Signal/noiseratio: 50 dBWow andflutter: 0.25 % (WRMS)Motor: DC 9 V electric governorBias system: AC biasErasesystem: Magnet erase

QT-CD250

– 3 –

NAMES OF PARTS

REMOTE CONTROL

15

15

Notes:● Replace the batteries if the operating distance is

reduced or if the operation becomes erratic.● Periodically clean the transmitter LED on the

remote control and the sensor on the main unitwith a soft cloth.

● Exposing the sensor on the main unit to stronglight may interfere with operation. Change thelighting or the direction of the unit.

● Keep the remote control away from moisture,excessive heat, shock, and vibrations.

Remote Sensor

8" - 20'(0.2 m - 6 m)

11. (TAPE) Record Button12. (TAPE) Play Button13. (TAPE) Rewind Button14. (TAPE) Fast Forward Button15. (TAPE) Stop/Eject Button16. (TAPE) Pause Button17. Cassette Compartment18. CD Compartment19. (CD) Stop Button

3 (TUNER) Tuning Down Button10. (CD) Repeat Button

3 (TUNER) Band Selector Button11. (TUNER) Preset Memory Button12. Extra Bass Button13. (CD) Play/Pause Button

3 (TUNER) Tuning Up Button14. (CD) Track Up/Cue Button

3 (TUNER) Preset Up Button15. (CD) Track Down/Review Button

3 (TUNER) Preset Down Button16. Volume Up/Down Buttons17. Power/Function Switch18. (CD) Play Indicator19. (CD) Repeat Indicator

20. (CD) Pause Indicator21. Extra Bass Indicator22. (TUNER) Memory Indicator23. (TUNER) FM Stereo Mode Indicator24. (TUNER) FM Stereo Indicator25. Battery Compartment26. FM Telescopic Rod Antenna27. Headphone Jack28. AC Power Input Jack29. Backup Memory Battery Compartment30. (CD) Play/Pause Button

3 (TUNER) Tuning Up Button31. (CD) Track Down/Review Button

3 (TUNER) Preset Down Button32. (CD) Stop Button

3 (TUNER) Tuning Down Button33. (CD) Repeat Button

3 (TUNER) Band Selector Button34. (TUNER) Memory Button35. (TUNER) Clear Button36. (CD) Track Up/Cue Button

3 (TUNER) Preset Up Button37. Extra Bass Button38. Volume Up/Down Buttons

25 26 27 28

29

30

3137

34

33

32

3536

38

1 2 3 4 5 6 7 8

9

10

11

12

131415

16

17

20 21 22 231918 24

QT-CD250

– 4 –

5

4

6

13

2

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PU

TA

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AC

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UT

AC

120

V, 6

0 H

z12

0 V

de

CA

, 60

Hz

●6

“D”

size

bat

terie

s(U

M/S

UM

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or

sim

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pila

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.

OPERATION MANUAL

QT-CD250

– 5 –

1 Top Cabinet/ 1. Screw ................... (A1) x7 5-1Front Cabinet 2. Socket .................. (A2) x1

3. Screw ................... (A3) x1

2 Power PWB/ 1. Screw ................... (B1) x2 5-2Terminal PWB 2. Hook ..................... (B2) x2

3. Socket .................. (B3) x14. Hook ..................... (B4) x2

3 Switch PWB 1. Screw ................... (C1) x2 5-22. Socket .................. (C2) x13. Hook ..................... (C3) x24. Screw ................... (C4) x4

4 Main PWB/ 1. Socket .................. (D1) x1 5-2CD Control PWB 2. Screw ................... (D2) x7(Note) 3. Screw ................... (D3) x1

4. Solder ................... (D4) x35. Socket .................. (D5) x3 5-36. Screw ................... (D6) x67. Hook ..................... (D7) x2

5 CD Mechanism 1. Screw ................... (E1) x3 5-3

6 Tape Mechanism 1. Screw ................... (F1) x4 5-3

DISASSEMBLYCaution on DisassemblyFollow the below-mentioned notes when disassembling theunit and reassembling it, to keep it safe and ensure excellentperformance:1. Take cassette tape and compact disc out of the unit.2. Be sure to remove the power supply plug from the wall

outlet before starting to disassemble the unit.3. Take off nylon bands or wire holders where they need to

be removed when disassembling the unit. After servicingthe unit, be sure to rearrange the leads where they werebefore disassembling.

4. Take sufficient care on static electricity of integratedcircuits and other circuits when servicing.

STEP REMOVAL PROCEDURE FIGURE

Figure 5-3Figure 5-1

Figure 5-2

CD MECHANISM SECTIONPerform steps 1 to 4 of the disassembly method to remove theCD mechanism.How to remove the pickup (See Fig. 5-4.)1. Remove the screws (A1) x 2 pcs., to remove the shaft (A2)

x1 pc.2. Remove the stop washer (A3) x1 pc., to remove the gear

(A4) x 1 pc.3. Remove the pickup. Stop

Washer(A3) x1

CD Mechanism

Gear(A4) x1Shaft

(A2) x1

Pickup

(A1) x2ø2.6 x6mm

REMOVING AND REINSTALLING THE MAIN PARTS

Figure 5-4

Note : (Figure 5-3 and Figure 5-4) After removing the connector for the optical pickup from the

connector, wrap the conductive aluminium foil around thefront end of connector to protect the optical pickup fromelectrostatic damage.

Top Cabinet

AC Socket(B1)x2ø3x12mm

(D2)x7ø3x12mm

(C1)x2ø3x12mm

(C4)x4ø3x10mm

(D3)x1ø2.5x8mm

Main PWB

Power PWB

(D4)x3

(B3)x1

(B2)x2

(B4)x2

(D1)x1

CD Lid Switch

Power Transformer

TerminalPWB

(C3)x2

Switch PWB

(C2)x1

(E1)x3ø2.5x10mm

(F1)x4ø3x10mm

(D5)x1

(D5)x2

Top Cabinet

(D6)x6ø3x8mm

(D7)x2

Washer

CD Mechanism

CD Control PWB

TapeMechanism

(A1)x3ø3x12mm

Top Cabinet

Front Cabinet

(A1)x4ø3x12mm

SP202R-CH

MainPWB

(A2)x1

(A3)x1ø3x10mm

QT-CD250

– 6 –

TAPE MECHANISM SECTIONPerform steps 1 to 6 of the disassembly method to remove thetape mechanism. (See page 5.)

How to remove the record / playback and eraseheads (See Fig. 6-1.)1. Remove the screws (A1) x 2 pcs., to remove the record/

playback head.2. Remove the hooks (A2) x 2 pcs., toward the center position

as shown in Fig. 6-1. and then extract the erase headupward.

Note:After replacing the heads and performing the azimuthadjustment, be sure to apply screwlock.

How to remove the pinch roller (See Fig. 6-2.)1. Carefully bend the pinch roller pawl in the direction of the

arrow <A>, and remove the pinch roller (B1) upwards.

How to remove the belts (See Fig. 6-3.)1. Remove the main belt (C1) x 1 pc., from the motor pulley.2. Remove the FF/REW belt (C2) x 1 pc., from the REW/FF

roller.3. Put on the belts in the reverse order of removal.Note:When putting on the belt, ascertain that the belt is not twisted,and clean it.

How to remove the motor (See Figs. 6-4.)1. Remove the mainbelt.2. Remove the screw (D1) x 1 pc., to remove the motor mount.3. Remove the screws (D2) x 2 pcs., to remove the motor.Note:When mounting the motor, pay attention to the motor mountingangle.

How to remove the flywheel (See Fig. 6-5.)1. Remove the belt.2. Remove the stop washer (E1) x 1 pc., with a small precision

screwdriver to extract the flywheel from the capstan metal.Note:When the stop washer is deformed or damaged, replace itwith a new one.

How to reinstall the partsInstall each part in the reverse order of the removal with care.

Figure 6-1

Figure 6-2

Figure 6-3

Figure 6-4

Figure 6-5

(A1) x1ø2x7mm

(A1) x1ø2x3mm

Record/PlaybackHeadErase Head

Hook(A2)x2

<A>Pinch Roller(B1)x1

Pinch RollerPawl

Motor

REW/FFClutch Ass'y

Flywheel

FF/REW Belt(C2)x1

Main Belt(C1)x1

(E1) x 1Stop Washer

Washer

Flywheel

(D1)x1SpecialScrew

Motor Mount

Motor

(D2)x2SpecialScrew Motor

Mount

Motor

QT-CD250

– 7 –

MECHANISM SECTION• Driving Force Check

PLAY: TW-2412 Over 120 g

Torque Meter Specified Value

• Torque CheckTorque Meter Specified Value

Play: TW-2111 25 to 65 g.cm

Fast Forward: TW-2231 60 to 130 g.cm

Rewind: TW-2231 60 to 130 g.cm

• Tape Speed

MTT-111 Variable 3,000 ± 90 Hz Output: Speakerresistor in Teaminalmotor. (M601) (CNP201 Load

resistance: 4 ohms)

InstrumentConnection

SpecifiedValue

TestTape

TAPE SECTION Position of each switch or control

Volume control MaxFunction switch Tape/Power OffX-BASS On

• Bias OscillationAdjustment Point

• Playback Amplifier Sensitivity CheckInstrument ConnectionTest Tape

MTT-118 1.1 V ± 3 dB Speaker Terminal(Load resistance: 4 ohms)

Specified Value

ADJUSTMENT

Figure 7 ADJUSTMENT POINTS

• Head AzimuthTorque Meter Specified Value

MTT-114 Output: Speaker Terminal(CNP201 Load resistance: 4 ohms)

AdjustingPoint

Specified Value InstrumentConnection

L301 82 kHz ± 6 kHz Pin 2 of CNP201 - 6 kHz

• AM IF/RFSignal generator: 400 Hz, 30%, AM modulated

TUNER SECTIONfL: Low-range frequencyfH: High-range frequency

AM IF 450 kHz 1,720 kHz T3 *1

AM Band — 530 kHz (fL): L4 *3Coverage 1.0 ±0.05V

AM Tracking 600 kHz 600 kHz (fL): L3 *21,400 kHz 1,400 kHz (fH): TC1

Test Stage Frequency FrequencyDisplay

Setting/Adjusting

Parts

InstrumentConnection

*1. Input: Antenna, Output: TP1*2. Input: Antenna, Output: Speaker terminal

• FM RFSignal generator: 1 kHz, 75 kHz dev., FM modulated

FM Band — 87.5 MHz (fL): L2 *1Coverage 1.7 V ± 0.05V

FM RF 98.0 MHz 98.0 MHz L1 *2(10-30 dB)

Test Stage InstrumentConnection

Frequency FrequencyDisplay

Serring/Adjusting

Point

*1. Input: Antenna, Output: Pin 16 of IC1*2. Input: Antenna, Output: Speaker Terminal*3. Input: Input is not connected, Output: TP1

SW102

CNP101

L301

CNP602

R7

L1

L2

IC1

T3

TC1

HPJ201HEADPHONE

L4

IC1011

12

11

2

CNP201123

123

FM IF

AM BANDCOVERAGE fL

TP1

L3AM BARANTENNA

AMTRACKING fL

AMTRACKING fH

AM IF

1

13

16

12

24

FM BANDCOVERAGE fL

BIAS OSC. 1234

MAIN PWB

QT-CD250

– 8 –

A. CD TEST MODESet the function switch to "CD" when pressing the "REVIEW(PRESET DOWN )" button together with "STOP(TUNING DOWN)"button.

Step-1. CD Pickup can be move when press the "CUE" button either "REVIEW" button."CUE" button : CD Pickup move to out side of disc."REVIEW" button : CD Pickup move to in side of disc. (CD Pickup can't move any more, if reach to most in side.)Note: If the CD Lid open (SW810 open), the unit can be operate Step-1 only and the unit can't operate from Step-2 to Step-5.

Step-2. The LASER light up when press the "PLAY/PAUSE" button.

Step-3. CD disc can be playing mode when press the "PLAY/PAUSE" button during the LASER ON.

The LCD displays indicate the "Track Number" and the "Playing Time".

Step-4. CD disc will be stop and the LASER goes out when pressing the "STOP" button, and return back to Step-1. (CD Pickupposition keeps at that point).

Step-5. It can be control to ON/OFF of the Tracking Servo when press the "MEMORY" button during the CD playing mode. (The Servo will be ON when playing mode again, if to make stop mode during the Servo OFF condition.)

The LCD displays indicate the playing time of CD Pickup point.(The LCD displays indicate the playing time at that point when Pickup moving, if press the "CUE" button or press the "REVIEW"button.)

QT-CD250

– 9 –

B. TUNER TEST MODESet the function switch to "TUNER" when pressing the "REVIEW(PRESET DOWN )" button together with "BAND(REPEAT)"button.

The LCD displays indicate the "TunEr" for several seconds. after that, the LCD displays indicate to the normal frequency.

Note:1. The Preset Channel can be change when press the "PRESET UP (CUE) button either "PRESET DOWN (REVIEW)" button. PRESET UP button is pressed : P-01 -> P-02 -> > > > > P-15 -> P-01 PRESET DOWN button is pressed : P-15 -> P-14 -> > > > > P-01 -> P-152. The Tuner Mode can be change when press the "BAND (REPEAT)" button. BAND button is pressed : FM stereo -> FM mono -> AM -> FM stereo

PRESET.NO

U.S.A. FM MODE

P-01 FM 87.5 MHz STEREO

P-02 FM 108.0 MHz STEREO

P-03 FM 98.0 MHz STEREO

P-04 FM 90.0 MHz STEREO

P-05 FM 106.0 MHz STEREO

P-06 AM 530 KHz

P-07 AM 1720 KHz

P-08 AM 990 KHz

P-09 AM 600 KHz

P-10 AM 1400 KHz

P-11 FM 106.0 MHz MONO

P-12 FM 90.0 MHz MONO

P-13 FM 98.0 MHz MONO

P-14 FM 108.0 MHz MONO

P-15 FM 87.5 MHz MONO

C. LCD TEST MODESet the function switch to "TUNER (or CD)" when pressing the "REVIEW(PRESET DOWN )" button together with "MEMORY"button.

All of the segments will light up.

QT-CD250

– 10 –

D. VOLUME TEST MODESet the function switch to "POWER ON (TAPE PLAY, TUNER or CD)" when pressing the "REVIEW(PRESET DOWN )" buttontogether with "PLAY/PAUSE (TUNING UP)" button.The LCD display do not indicate the VOLUME level at this time.But, the VOLUME level is "12" which is defaults level.

The VOLUME LEVEL can be change when press the "VOLUME UP" button either press the "VOLUME DOWN" button."VOLUME UP" button is pressed : (12 VoL) -> 30 VoL -> 30 VoL (30 is flashing)

"VOLUME DOWN" button is pressed : (12 VoL) -> 1 VoL-> 0 VoL -> 0 VoL (0 is flashing)

QT-CD250

– 11 –

NOTES ON SCHEMATIC DIAGRAM 1. Tuner

( ): AM modeMarking except for ( ): FM mode

2. CD( ): Play modeMarking except for ( ): Stop state

3. Deck section( ): Record modeMarking except for ( ): Playback modeDisplay / Control section:( ): Active stateMarking except for ( ): CD Function mode at stop state

• Schematic diagram and Wiring Side of P.W.Board for thismodel are subject to change for improvement without priornotice.

• Parts marked with “ ” ( ) are important formaintaining the safety of the set. Be sure to replace theseparts with specified ones for maintaining the safety andperformance of the set.

• Resistor:To differentiate the units of resistors, the symbol as K and Mare used: the symbol K means 1000 ohm and the symbol Mmeans 1000 kohm and the resistor without any symbol is anohm resistor. The resistor designated "Fusible" is a fuse typeresistor

• Capacitor:To indicate the unit of capacitor, a symbol P is used: thissymbol P means micro-micro-farad and the unit of the capacitorwithout such a symbol is microfarad. As to electrolytic capacitor,the expression “capacitance/withstand voltage” is used.(CH), (TH), (RH), (UJ): Temperature compensation(ML): Mylar type(P.P.): Polypropylene type

• The indicated voltage in each section is the one measured byDigital Multimeter between such a section and the chassiswith no signal given.

SW102 RECODE/PLAYBACK REC—P.B.

SW201 FUNCTION SELECTOR TAPE/OFF—TUNER/ON—CD/ON

SW601 TAPE MAIN OFF—ON

SW702 PICKUP IN OFF—ON

SW801 PLAY/PAUSE/ OFF—ONTUNING UP

SW802 STOP/TUNING DOWN OFF—ON

SW803 REPEAT/BAND OFF—ON

SW804 TUNER/MEMORY OFF—ON

SW805 CUE/PRESET UP OFF—ON

SW806 REVIEW/ OFF—ONPRESET DOWN

SW807 VOLUME UP OFF—ON

SW808 VOLUME DOWN OFF—ON

SW809 X-BASS OFF—ON

SW810 CD LID OFF—ON

REF. NO DESCRIPTION POSITION

Figure 11 TYPES OF TRANSISTOR

E C B(S)(G)(D)(1) (2) (3)

FRONTVIEW

KRA102 MKRC107 MKTA1046 YKTA1266 GRKTA1273 YKTC3199 GR

QT-CD250

– 12 –

A

B

C

D

E

F

G

H

1 2 3 4 5 6

• The numbers 1 to 17 are waveform numbers shown in page 16.

Figure 12 SCHEMATIC DIAGRAM (1/2)

COR1

C85

610

0P

C29

10

0PR

865

47K

D8041N4148

C75100P

C34

220P

C33220P

C50.1

COR801

BI8

01B

I802

C8050.022

C806330/10

R85

32.

2K

R85

22.

2K

C8070.047IC803

LA6541D

30 29 28 27 26 25 24 23 22 21 20 19 18 17 16

151413121110987654321

R8512.2K

R76820

L51100µH

C54

0.02

2

R1310K

R18100

C68

220P

R77

3.3KR17

47K

R142.2K

C58 100P

C57 100P

C18 0.001

R20470

R87

94.

7K

D8061N4148

R86247K1

R86110K

CF4

R854100

C121/50

R1

R58

1K

R1539K

R714.7K

R743.3K

R733.3K

C26

0.1

C2310/16

C70.001

R410

L2

R84522KR866

3.3K

D8021N4148

C24

51/

50

C24

333

0PC

244

330PR242

10K

R24110K

C2421/50

C2411/50

R2402.2K

R2392.2K

R2382.7K

C22

40.

1/50

C22

30.

1/50

R2372.7K

R23

647

KR

235

47K

R2332.2K

R2342.2K

SW201-C

SW201-B

C9

0.02

2

C10

8P

L803220µH

R8501.5K

1

R249220

C741/50

R724.7K

C82547/16

C24

722

0/10

R24

756

0R

248

560

R2465.6K

R244560K

R243560K

R2455.6K

R51150C61

100/10

C731/50

R5410K

R3544.7

R35333K

C3530.0056(ML)

R352150

C3540.022(ML)

C352100/10

R351100

R126100

L301

C35

10.

0022

(ML)

R12

43.

3KR

123

3.3K

R1212.7K

R1222.7K

X514.5MHz

R45615K

R4581K

R4571K

R45515K

R62

1K

R61

1KR60

1K

R59

1K

C600.0022C

590.

01

C552.2/50

R53

4.7K

R522.2K

C53

100/

10

TC

1

R8

220K

C11360P

VD3KV1520NT

C250.047

F1

C27

0.00

1

C80.001

R615KR

210

0K

C24

0.1

C192.2/50

R12

10

R710K

VD

2K

V13

70N

T

R5

22K

C6

22P

(CH

)

C320.1

R1

3.3K C3

0.01

L1C20.001V

D1

KV

1370

NT

R3

100K

C1

15P

(CH

)

C8300.01(ML)

C8280.0027

C8290.0047

R8323.3K

C8270.015(M

R82715K

C835470P

R8313.3K

R83010K

R8293.3K

R8121K

R8343.3K

C8330.033(ML)

R8333.3K

C8540.0068

IC80

1T

A21

09F

24

23

22

2120191817

1615

141312

11109 8

7 6 5 4 3 2

1

C8190.1(ML)

R8022.2K

C81856P

C8220.047

C86347/16

C8410.047

C8420.047

C84347/16

C82647P

R82

622

0K

D11N4148

R16

3.3K

C

221/

50

C14 0.047

C71

0.02

2(M

L)

C72

0.

022

(ML)

C16

4.7/

50

CF1 CF3 T3

C15

220/

10

R10

330

C13

0.47

/50

IC1

24 23 22 21 20 19 18 17 16 15 14 13

1211109876 54321

C2110/16

C20

330P

C5115P(CH)

C5212P(CH)

IC51 LC72121

2221201918171615141312

11 10 9 8 7 6 5 4 3 2 1

R5556K

C56

0.02

2

C821100/10

R8062.7K

R8071K

C8010.01

R80539K

C8200.1(ML)

R81

122

K

C80

42P

(CH

)

R80382K

C81347/16

C8140.047

R80468K

D10

11N

4148

R110120

R1081K

R1153.9K

C11810/16

R125680K

R10412K

R10312K

C12

10.

01C11347/16

C110270P

R1148.2K

R1138.2K

C11

92.

2/50

C1050.0018

R101330

R12

03.

3K

R10515K

C112330P

R1163.9K

C1160.018(ML)

R10615K

C1060.0018

C12

20.

01

R11

93.

3K

R1183.9K

CN

P10

1

R102330

C11

710

/16

D10

21N

4148

C1150.018(ML)

R1071K

C111330P

C108820P

R1173.9K

C12

047

/16

C123220/10

C11447/16

C109270P

C107820P

R109120

IC101BA3311L

1211

10

9

8

76

5

4

3

2

1

C81

710

0/10 C816

0.022

C81547/16

BI8

03

C8020.022

R82

047

K

X80

116

.93M

Hz

C8380.047(ML)

C8390.047(ML)

C834470P

C8360.047(ML)

C8450.047

C8370.047(ML)

R82810K

R80122

C83247/16

NC

NC

NC NC

NC

NC

NC

NC

NC

NC

NC

NC

NC

Speaker Case

MO

NO

/S

T

FM

/AM

BO

1

PD

VS

SD

BO

4

BO

3

BO

2

DO

CL

VS

SA

VC

O

FM

/AM

IND

ST

OU

T

AM

IF

IF

MIX

FM

RF

R-C

H

L-C

H

FM DET

AM IF

FM

OS

C

FM RF

MP

X IN

DE

T

OS

C

OU

T

IN

AM

OS

C

FM

AM

RF

OS

C

INGN

D

AM

LO

WC

UT

OU

T

VC

C

INFM

IF

AG

C

GN

D

LPF

2

LPF

1

RE

Q

RF

OU

T

VC

C

FM

RF

FM

RF

IN

QU

AD

TU

CD

AO

UT

IO2

IFIN

AM

IN

FM

IN

AIN

VD

D

IO1

DI

CE

XIN

X

OU

T

CDR-CH

L-CH

TRO

FOO

DMO

FMO

VC

C

VR

EF

CD

RE

S

RE

G IN

RE

G O

UT

VIN

4

VIN

3V

IN2

GN

D

GN

D

7.5V

GN

D

GN

D

GN

D

VG

4

VG

3 V

G2

VO

4-

VO

4+

VO

3-

VO

3+V

O2+

VO

2-

VO

1-

VO

1+

VG

1

VIN

1

MT

VC

C

SW810

OPEN/CLOSECD LID

CN

S80

2C

NS

801

CN

S80

3

R-C

H(C

D)

L-C

H(C

D)

GN

D(A

UD

IO)

+7.5V(CD)

CN

P80

3

FMROD ANTENNA

-

+ SW601TAPEMAIN

M601TAPEMOTOR

ALC T

FILTER

VCC

GND

NF1

NF2 IN2

IN1

OUT2

OUT1

R

P R

P

PRP

PP

R

R

R

R PRE AMP

TA

TU

TA

P

M702SPINDLEMOTOR

M701SLEDMOTOR

SW702PICKUP IN

+

+

-

-

SP+

SP-

SL+

SL-

PU-IN

LD

K

E

E

K

LD

VR

PD

G

B

B

A

F

F C

TR+

TR-

FO+

FO-

R-

R+

2200P

2200P

CD MOTOR PWB-B

FC-

FC+

TR-

TR+

GND

GND

K

F

B

E

A

VCC

FNI

FPI

TPI

TNI

MDI

LDO

SEL

TEB

2VRO

TEN

TEO

RFN

GND

RFO

AGCI

RFGC

RFGO

RFIS

RFRP

VRO

FEN

FEO

SBAD

MON

1M

1MLTOH30P1

SLT-

SLT+

FM-

FM+

DM-

DM+

8 7

6 5

4

6

7 8

3

2 1

4 3

2 1

5 4 3

2 1

8 7

6 5

2

4

3 2 1

5

1

3 2 3

4 5

1

5 4

11

14

1312

107

89

M

12

2

13

2

1 3

TA2104BN

43

12

9

13

22

M

M

123

456

SW102-D

SW102-H

SW102-E

SW102-A SW102-F

SW102-GSW102-B

SW102RECORD/PLAYBACK

A

PICK-UP UNIT

LD

VR

PD

F+

F-

123

456

123

456

SW102-C

8 7

P 6 5 4 16 17 18

3 2 1

Q801KTA1266 GR

L3AM BAR ANTENNA

FM BANDPASS

FILTER

2 31

SW102RECORD/PLAYBACK

19 20 21

14 15

23 24

Q1KTC3199 GR

R

Q351KTC3199 GR

11 10

Q210KTC3199 GR

Q209KTC3199 GR

VS

SX

1

2

3

Q803KRC107 M

2 3

Q802KTA1273 Y

Q806KTA1273 Y

Q805KRC107 M

23

Q804KTA12SWITC

Q2KRA102 M

TUNERSWITHCING

Q21

1K

TC

3199

GR

Q21

2K

TC

3199

GR

4.4V

1.9V

1.9V

0.5V

0.5V

0V

3.8V

0V

0V

3.7V

1.9V

1.9V 0.8V

1.9V

1.9V

1.9V

0.9V

1.9V

1.9V

0.5V

1.9V

0.1V

GND

1.9V

VC

C

1.9V

1.9V

3.4V

3.4V

GN

D

GN

D

GN

D

3.4V

3.4V

1.9V

1.9V

1.

9V

1.9V

3.4V

3.4V

3.4V

3.4V

1.9V

1.9V

7.5V

LASER DRIVER

4.4V(ON:2.8V)1.4V(ON:1.9V)

3.7V(ON:2.1V)

SWITCHING7.5V

7.5V

(TU

N:0

V)

6.9V

(TU

N:7

.5V

)

GNDSWITCHING

0V(TUN:7.5V)

4.5V

(TU

N:

0.5V

)

4.4V

GND

0V(TUN:7.5V)

4.4VSWITCHING

5.0V5.0V(TUN:0V)

4.3V(TUN:5.0V)

SWITCHING

IC801SERVO PRE AMP.

TA2109F

8

9

10

IC803FOCUS/

TRACKING/SPIN/

SLED DRIVERLA6541D

23

AM BANDCOVERAGE fL

FM BANDCOVERAGE fL L2

987654321

121110

PINNO. VOLTAGE

IC1

0.82V(0V)0V(0V)0.V3.5V(4.1V)3.7V(4.1V)3.2V(4.1V)3.7V(4.1V)GND0.4V(0.1V)3.0V(3.6V)1.2V1.2V

212019181716151413

242322

PINNO. VOLTAGE

2.9V(0V)3.1V0.7V1.0V0.9V5.0V3.6V(4.0V)3.7V(4.1V)3.7V(4.1V)3.7V(4.1V)3.7V(4.1V)3.7V(4.1V)

( ): AM

CN

S10

1

L-CH

R-CH

ERASE HEAD

4

3

2

1

RECORD/PLAYBACK HEAD

TAPE

IC51LC72121ELECTRONICTUNING

IC1FM/AM IF MPX.,TA2104BN

IC101REC./P.B.EQUALIZER AMP.BA3311L

L4AM OSC.AM TRACKING fL

AM TRACKING fH

AM IF

FM IF

0.6V

0V

0V

0.6V 3.2V

3.1V

7.3V

7.3V

0V

VOLTAGE:PLAY and REC.

SW102RECORD/PLAYBACK SW102

RECORD/PLAYBACK

SW102RECORD/PLAYBACK

SW201FUNCTIONSELECTOR

BIAS OSC.

SW102RECORD/PLAYBACK

+B

+B

+B

+B

+B

+B

+B

+B

+B

+B

+B +B

+B

+B

+B

987654321

121110

PINNO.

IC51

1.6VGND0.V0V0V4.9V-3.1V2.9V0V5.0V0V0.9VGND0V1.5V3.2V0.9V0.9V1.7VGND1.6V

212019181716151413

22

VOLTAGEFM ST FM MONO AM

1.6VGND0.V0V0V4.9V-0V2.9V0V5.0V0V0.9VGND0V1.5V3.2V0.9V0.9V1.7VGND1.6V

2VGND0.V0V0V4.9V-0.7V0V0V5.0V0V0.9VGND2.0V0V4.2V0.9V0.9V1.0VGND2.6V

0V

GND0V

5.0V

5.0V(CD: 0.4V)

GN

D(C

D: O

PE

N)

TUNERMUTE

0V0V (R

EC

: 4.0

V)

0V(REC: 0.4V)

BIAS OSC.

0VG

ND

0V(OFF:0.6V)

0V(OFF:0.6V)

0VG

ND

0.2V

0.2V

2.0V

2.0V

0.8V

0.8V

Q209,Q210 X-BASS ON/OFF

Q211,Q212 LINE AMP

QT-CD250

– 13 –Figure 13 SCHEMATIC DIAGRAM (2/2)

7 8 9 10 11 12

• NOTES ON SCHEMATIC DIAGRAM can be found on page 11.

+B

C3020.022

C87

20.

0047

L807

0.82

µH

C24

910

0PC

204

0.02

2D

202

1N41

48

C870100P

R8714.7K

R25

33.

9K

R85

615

K

FW

801

FW

802

R21

41K

R21

51K

R21

61K

R2101K

R2091K

R21

88.

2KR

217

8.2K

D8061N4148

R86247K1

C201100/16

C2301/50

R2224.7K

C2141/50

R2214.7K

C2131/50

R87

04.

7K

R86

94.

7K

LCD801

2019181716151413121110987654321

CN

P60

2

CN

S60

2

SW809X-BASS R857

47K

R854100

C2260.022

CN

S80

1

CN

P80

1

D80

31N

4148

R85518K

R8415.6KR848

10KR84918K

R8475.6K

R8434.7K

R8464.7K

R8211K

R87610K

C8620.1

X8024.19MHz

C84

61/

50

D80

51N

4148

C2110.047

C2120.047

R20

210

K

R2054.7K

C20

30.

01

C20247/16

R2011.2K

R203270 Z

D20

1D

Z5.

1BS

B

D20

31N

4148

R90147K

R90047K

R89947K

R89847K

R89747K

R89647K

R89547K

R89447K

R89347K

R89247K

R89147K

R89047K

R88947K

R88847K

R88747K

R88647K

R88547K

R88447K

R88347K

R88247K

C86

510

0/10

C86

40.

1

R8734.7K

R87810K

R87710K

R87510K

R86

84.

7K

C2311/50

R25122K

R25222K

C2291/50

D80

11N

4148

C24

51/

50

C24

333

0PC

244

330PR242

10K

R24110K

C2421/50

C2411/50

R2402.2K

R2392.2K

R2382.7K

R2372.7K

C2321/50

R8724.7K

R86

74.

7K

R82510K

R83

947

K

R86

04.

7KR

863

1.8K

C84

722

/16

C84

822

/16

C85

30.

022C84

410

0/10

R836270

R835270

C2201/50

C2191/50

C21

00.

022 D

204

1N41

48

D20

51N

4148

R206560

R2042.2K

C20

647

/16C

209

0.01

ZD

202

DZ

7.5B

SB

R213100

R21

247

KR

211

47K

R225100K

C65

30.

022

D65

31N

4004

D65

21N

4004

C65

20.

022

D65

41N

4004

D65

11N

4004

C65

40.

022

C65

10.

022

R249220

R2244.7K

C24610/16

R2234.7K

C82547/16

D20

11N

4148

R86

41M

L801220µH

R250470K

C24

722

0/10

R24

756

0R

248

560

R2465.6K

R244560K

R243560K

R2455.6K

SW201-DSW201-A

R2302.7

R3544.7

515MHz

R45615K

R4581K

R4571K

R45515K

ZD203ZD2.4BSB

C81010/16

R808100

C8300.01(ML)

C8280.0027

C8290.0047

R8323.3K

C8270.015(ML)

R82715K

R8313.3K

R83010K

R8293.3K

R8121K

R8343.3K

C8330.033(ML)

R8333.3K

C82

30.

022

C8400.1

C8540.0068

IC802SERVO/SIGNAL

CONTROLTC9457F2

10099989796959493929190898887868584838281

80

79

78

77

76

75

74

73

72

71

70

69

68

67

66

65

64

63

62

61

60

59

58

57

56

55

54

53

52

51

50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31

30

29

28

27

26

25

24

23

22

21

20

191817161514

13121110987 654321

C8523.3/50

C8513.3/50

C8490.0022

C8500.0022

R84

422

K

C82647P

R82410K

R82

622

0K

R84

222

K

R83810K

R83710K

R207560

C207470/10

C2080.022C20547/16

C21

80.

0015

(ML)

C21

70.

0015

(ML)

R220220K

IC202

161514131211109

8 7 6 5 4 3 2 1

C21

60.

1(M

L)

R219220K

C21

50.

1(M

L)

C23

610

0/10

R23

212

0

C22

10.

001

C22

20.

001

C23

510

0/10

R231120

C22

510

0/10

1413

12

2

3

9

5

6

7

8

4

10

11

1

C2390.1(ML)

C23

810

0/10

C237100/10

C234470/10

C233470/10

CN

P20

1

R228120

R227120

HPJ201HEADPHONES

R82

047

K

X80

116

.93M

Hz

ML)

C82

447

/16

ML)

C8450.047

ML)

R82810K

R84010

C22

747

00/1

6

NC

NC

NC

NC

NC

X-BASS

SWITCH PWB-A4

P_M

UT

E

ST

B_(V

OL)

CE

_(PLL)

CDPOWER

HO

LD

7.5V

5V

X-B

AS

S

TUNER-FUNC

SEG17

CL

DI

DO

CD-FUNC

KEY2

KEY1

ADIN3

SEG16

SEG15

VS

S

ST

BD

AT

A

CK

CS

+5V

(u C

OM

)

+4.

5V(B

AC

K U

P)

DC 9V ["D" size (UM/SUM-1,R20 orHP-2) battery x 6]

TAPETUN TUN

ST

MEMORY

KHz

MHz

CN

S20

1

BATTERY

NC

NC

NC

NC

SP202

SP201

POWER PWB-A3

R-C

H(C

D)

L-C

H(C

D)

GN

D(A

UD

IO)

GN

D(P

OW

ER

)

GN

D(C

D)

SPEAKERS

L-CH

R-CH

4 OHM

4 OHM

+5V

(CD

)

SELECTOR

-

+ SW601TAPEMAIN

M601TAPEMOTOR

TAPE

CD CDAC/DC

AC INPUT

-

-

+

+

IC20

1T

A82

27P

PO

WE

R A

MP

.

MVSS1

MVDD1

SEG1CO

M1

MV

DD

MV

SS

MX

I

MX

O

RE

MO

-IN

RE

SE

T

DV

SL

LO

DV

RL

DV

DD

DV

RR

RO

DVSR

TE

ST

0

DO

UT

SB

SY

SB

OK

VD

D1

VS

S1

P2V

RE

F

PD

O

TM

AX

LPFN

LPFO

PVREF

VCOF

AVSS

SLCO

RFI

AVDD

RFCT

RFZI

RFRP

FEI

SBAD

TEI

TEZI

FOO

TRO

VREF

RFGC

TEBC

FMO

DMO

2VREF

SEL

VDD2

VSS2

XI

XO

XVDD

SEG2

SEG3

SEG4

SEG5

SEG6

SEG7

SEG8

SEG9

SEG10

SEG11

SEG12

SEG13

SEG14

DOOR IN

PU IN

TE

ST

1

TE

ST

2

TE

ST

3

TE

ST

4

TE

ST

5

XVSS

CO

M2

CO

M3

CO

M4

NC

CD CONTROL PWB-A2

SO651AC INLETSOCKETAC 120V,60Hz

T651POWER TRANSFORMER

12 12

123

2

4

1

3

2

4

1

3

Q204KTA1273Y

1617

18

19

1

4

3

2

M

5

4

7

6

1

3

2

12

3

12

3

199 GR

Q210KTC3199 GR

Q209KTC3199 GR

1

2

3

Q805KRC107 M

23

Q804KTA1266 GRSWITCHING

Q2A102 MUNERTHCING

Q21

1K

TC

3199

GR

Q21

2K

TC

3199

GR

Q20

5K

TC

3199

GR

Q206KTA1046 Y

Q20

7K

TC

3199

GR

Q203KTA1266 GR

C2400.1(ML)

Q20

1K

TC

3199

GR

Q20

2K

TC

3199

GR

VD

D

11 11

10 10

9 9

7 7

6 6

5 5

4 4

1 1

2 2

3 3

8 8

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

10 10

11 11

SW808VOLUME DOWN

SW807VOLUME UP

UN801REMOTO SENSOR

N64H380A

3

123

DC 4.5V ["AA" size (UM/SUM-3,R6 orHP-7) battery x 3 for backup memory]

BATTERY

LCD DISPLAY

TERMINAL A PWB-A5/TERMINAL B PWB-A6

MAIN PWB-A1

5.0V

0.6V(TUN: 5.0V)

4.9V(TUN: 0V)

0V

5.0V(TUN:0V)

0V(TUN: 5.0V)

5.0V

2.5V

2.5V

2.5V

2.5V

2.5V

2.5V

2.5V

2.5V

2.5V

2.5V

2.5V

2.5V

2.5V

2.5V

2.5V

2.5V

5.0V

GND

0V(TUN: 4.9V)

5.0V(TUN:0V)

0VGN

D

GN

D

GN

D

GN

D

GN

D

GND

GN

D0V

0V

0V(T

UN

:5.0

V)

0V(X

-BA

SS

OF

F:4

.9V

)

4.4V

(TU

N:0

V)

GN

D3.

7V(T

UN

:0V

)1.9V

(TU

N:0

V)

0V

1.5V

(TU

N:0

V)

3.7V(TUN:0V)

1.9V(TUN:0V)

1.7V(TUN:0V)

GND

1.9V(TUN:0V)

1.9V(TUN:0V)

4.4V(TUN:0V)

1.9V(TUN:0V)

1.9V(TUN:0V)

0.9V(TUN:0V)

1.9V(TUN:0V)

0.7V(TUN:0V)

1.9V(TUN:0V)

1.9V(TUN:0V)

1.9V(TUN:0V)

1.9V(TUN:0V)

1.9V(TUN:0V)

0.5V(TUN:0V)

0V

1.9V(TUN:0V)

1.9V(TUN:0V)

3.7V(TUN:0V)

0V

4.4V(TUN:0V)

GND

GND

2.0V(TUN:0V)

(TUN:0V)

4.4V

(TU

N:0

V)

GND

2.2V

(TU

N:0

V) 2.1V

(TU

N:0

V)

4.2V

(TU

N:0

V)

2.1V

(TU

N:0

V)

2.2V

(TU

N:0

V)

GN

D

GN

D

GN

D 5V 5V

5V

2.5V

2.4V

GN

D

5.0V

2.3V

2.3V

2.3V

2.3V

5.0V

5.0V

4.4V

GND

0V(TUN:7.5V)

4.4VSWITCHING

RECORD SIGNAL

PLAYBACK SIGNAL

CD SIGNAL

FM SIGNAL

AM SIGNAL

13

12

57

16

11

1415

4

17

16

R AMP.

IC202ELECTRONICVOLUMETC9260P

+

-

+

-

SW201FUNCTIONSELECTOR

SW201FUNCTIONSELECTOR

1

2

SW801PLAY/PAUSE/TUNING UP

SW802STOP/

TUNING DOWN

SW803REPEAT/

BAND

SW804TUNER/

MEMORY

SW805CUE/

PRESETUP

SW806REVIEW/PRESETDOWN

+B

+B

+B

+B

+B

+B

+B

+B

+B

+B

+B +B+B

+B

+B

+B

+B

+B

+B

+B +B

+B

+B

+B

+B

5.0V

0.4V)

GN

D(C

D: O

PE

N)

8.2V-8.4V

4.5V-4.2V

8.6V-8.0V

GND

0.6V

0V

0V

0.6V

5.0V-4.6V

8.6V-8.0V

4.5V-4.2V

9.0V

GND

GND

GN

D

2.5V

2.5V

0V2.5V

GN

D0V

0V 0V2.

5V

2.5V

2.5V

2.5V

2.5V

4.6V

0V0V (R

EC

: 4.0

V)

0.4V)

OSC.

0VG

ND

0V(OFF:0.6V)

0V(OFF:0.6V)

0VG

ND

0.2V

0.2V

2.0V

2.0V

0.8V

0.8V

0.V

0VG

ND

GN

D

0V(ON:0.6V)

0V(ON:0.6V)

4.8V(ON:4.4V)

0V(ON:4.4V)

4.4V(ON:3.8V)

SWITCHING MUTE

MUTE

MUTE

9V7.5V

8.4V

7.0V

8.4V

0V

7.5V REGULATOR

7.5V

R

EG

ULA

TO

R

7.5V5.0V

7.0V

4.4V

7.0V

4.9V

Q204,Q205:5V REGULATOR

Q211,Q212 LINE AMP

QT-CD250

– 14 –Figure 14 WIRING OF P.W.BOARD (1/2)

A

B

C

D

E

F

G

H

1 2 3 4 5 6

• The numbers 1 to 17 are waveform numbers shown in page 16.

2345

1

789

6

1213

1415

1110

16

23

1

CNS801

SW809X-BASS

R808

C810

R809UN801

R857

SW808VOLUMEDOWN

R855

SW805CUE/PRESET UP

SW801PLAY/PAUSE/

TUNIG UP

FW802

R847

R841

LCD801

R849

R848

SW802 STOP/TUNING

SW803 REPEAT/BAND

R246 C24

7

R24

5

R248

Q212C231

R244 R247C244

Q21

1

R240 R243C242

CNP801

C243R236 R239

R238 C241R234

R235

SW804 TUNER/MEMORY

C224

R237R233C223

Q210

Q209R241

C245R74 R

242

R73 R45

8

SW201

R856

SW806DOWN/REVIEW/PRESE

FW801

SW807VOLUMEUP

C51

X51

R62 R61

IC51

R60

R59

R58 R55 R13

R76

R51

Q2

C75

R87

3

R87

7

CO

R80

1

R87

8

R87

5

R87

9

R87

2 R87

1

R843

R846

R876R882

C865R883R884R885

R888R886

R889 R887R890R891 R893R892

R894R895

R898R899R900R901

X802X801

R839

C845C846

R84

2R

844

Q80

5

R825

C832

L801

C853

R83

5

D80

6R

862

C84

7

C84

8Q804

C844

R83

6R86

0

R854C849 C850R837

R838C851

C852

R45

5

R45

6

D80

5

D80

3

R21

4

R45

7

R250

Q203

C20

7 R253

ZD

203

C220

R21

6R

215

C214Q

202

R212R225

R224 C23

5C246R223 Q

201 R

231

R207

IC20

2 C215

R21

1C

219

R219C217R217R209

C21

3

R25

1

C208 R210C229 R221

C205

R21

3C232 C230R252

R249

CNP201

R12

5

C12

0 C123

R124

R11

9

C12

1

D102

R12

3 R11

7

C11

7

IC101

C10

5

R10

5D

101 R

115

C11

5R

113

C11

3R

109

C10

9

C11

1

R121

R104 R10

1

R10

7C

107

R103

CNP101C351

L301

R35

1

C354

C10

8 R10

2R

108

R352

R11

6C

106

R10

6

R35

4

Q35

1

R353C353C

352

C11

2C

110

R11

0C

114

R11

4

C11

6

R126

R11

8C

118

R12

2

C11

9

R12

0C

122

C23

3

C23

4

CN

P60

2

C23

9

R230

C226C240

C201D201

C23

7

C238

IC20

1

C22

5 R23

2

C23

6

C22

1

C22

2

C21

0

C302

C227 C21

2

D801

C837

R81

2

C854C825

C82

1C822

C813R803

C836

R834

C814R833 C818

R83

2

R831

R807R830

C819R829

C829

C863

C816

C83

3

R82

8

C841

R80

5C

804

R80

6

C82

0

C801C828 R804

C815

C802C830R801

Q801

C817

R826

R824

C82

7R

827

C82

6

R82

0

C824

C83

8 C83

9

C83

5C

834

C842C843

L803

R85

2

R86

8R

867

Q806

R87

0

R845 R86

6

D802

R86

9

IC80

3

Q80

3

R851

D80

4

BI803

R85

0

L807

TC

1

R1

C27

C10

R8

R7

C9

C29

VD

3

C12

C11

R2

L1R6

R54

C8C61

C6C54

VD

2 L2

R5

C7R4

L51

C56

C53

R12

IC1

R53

C60 C23

C21

C59

R52C55

C20

C52 C22

C26

C24R15

R18

Q1

R16

R17

C19R71 C73 C74

R72C72

C71

C16C25

CF4

CF1

C14

CF

3 R10

T3

C13D1

F1

C3

VD1

C2

R3

C1

C85

6R

865

Q802

C80

6

CO

R1

C807

R85

3B

I801

R80

2

BI8

02R

811

R20

4D

204

D20

5

C21

1R

202

Q204

R20

1D

203

D20

2C

204 R20

3R20

5Q206

ZD

202

ZD

201

C20

9

Q207

C20

6R

206

Q205

C20

3

C20

2

C249

R22

8

R227

R254

C216

R222R218

C218R220

R861

C15

R840

23

45

1

6789

12

13 14

1110

1 2 3

2

3

4

51 7

8

9

6 12

11

10

1 2 3 4

A B C D

E F G H

ECB

ECB

ECB

BCE

ECB

BCE

BCE

BCE

B C E

B C E

B C EB C E

E C B

E C B

E C B

4321

B C

A D

321

8081

1 510

1520

25 3540

4555

6065

707585

9095

5150

3031

8

1

15

10

5 25

301

20

16

ECB

123

321

BCE

11 1210

5

20

221

15

1 2 3

23

1

3 2 1

L4

1

10

5

12

24

20

15

13

1 6

BK

BK

321

HPJ201HEADPHONES

PLAY RECSW102

RECORD/PLAYBACK

1 2 3

1

5

10

15

20

11

11 12

11

1112

BK

BK100

C870

C864

IC802

R896R897

C862 R863R864

R82

1

C840

C872

IC80

1

C823

C80

5

C5

C32C68

C18R14

C58R20 C34

R77

C33

13 12

15 10

520

24 1

5

1

1234

C57

SPEAKERSSP201 SP202 R-CHL-CH

CNS201

WH

BK

RD

MAIN PWB-A1

CD CONTROLPWB-A2

SWITCHPWB-A4

L3 AM BAR ANTENNA

WH

GY

GY

GY

GY

GY

12345

87654321

BKWHWHWHWH

WHWHWHWHWHWHWHBK

CNS802

CNS801

SW810CD LID

OPEN/CLOSE

SW

201

FU

NC

TIO

NS

ELE

CT

OR

TU

NE

RT

AP

EO

FF

PO

WE

R O

N

CD

5

1

7

8

6

1415

11

1716

10

23

9

12

13

4

BK

BK(245)

TO SP202(R-CH)

QT-CD250

– 15 –Figure 15 WIRING OF P.W.BOARD (2/2)

7 8 9 10 11 12

F3895AF

C65

1

C654

D651

D654

C653

D652

D653

C652

(241) (241)

(241)

CNS602

FM ROD ANTENNA(237)

BK

BK

RD

WH

RECORD/PLAYBACKHEAD(240-4)

ERASE HEAD(240-5)

TAPE

BK

CNS101

BKWH

RDBK

1234

BR

COLOR TABLE

RD(R)

OR

YL

GR

BL

VL

GY

WH(W)

BK

PK

BROWN

RED

ORANGE

YELLOW

GREEN

BLUE

VIOLET

GRAY

WHITE

BLACK

PINK

T651POWER

TRANSFORMER

(229)

(230)

BATTERYSDC9 V [ "D" size(UM/SUM-1,R20 or HP2) battery x 6 ]

YL

TAPE MOTOR(240-6)

M601TAPE MAIN

(240-7)

SW601

1

+

+

-

SW702PICKUP IN

M702SPENDLE MOTOR

M701SLED MOTOR

CNP803123456

5 4 3 2 1

78 6 5 4 3 2 1

PICK UP UNIT

CD MOTOR PWB-B

POWER PWB-A3

TERMINAL B PWB-A6

TERMINAL A PWB-A5

RDBK

BR

BK

RDRD

YL

YL

RD

OROR

OR

OR

OR

OR

SO651AC INLETSOCKETAC 120V,

60Hz

2

3

-

(233)

123456

WHGYGYGYGYGY

CNS803

BATTERYSDC4.5V ["AA" SIZE(UM/SUM-3,

R6 or HP7)battery x 3]

QT-CD250

– 16 –

WAVEFORMS OF CD CIRCUIT

NO DISC FOCUS SEARCH STOP PLAY

FOO 1 TMAX 1

FO+ 2 SBOK 2

FO- 3 DMO 3

FOCUS SEARCH TOC IL STOP PLAY

SEL 1 TEI 1

FEI 2 TRO 2

TEI 3 FMO 3

STOP PLAY CUE

FEI 1 TEI 1

SBAD 2 TRO 2

RFO 3 FMO 3

STOP PLAY REVIEW

FEI 1 TEI 1

RFGO 2 TRO 2

RFRP 3 FMO 3

STOP PLAY TCD-782 TNO-02 PLAYBACK

TEI 1 LO 1

TRO 2

RO 2

SBAD 3

1

2

3

4

6

7

11

15

16

17

5

6

5

7

8

5

9

10

6

11

12

13

14

6

11

15

6

11

15

IC802 66pin

IC803 20pin IC802 45pin

IC803 21pin IC802 72pin

IC802 74pin

IC802 62pin IC802 67pin

IC802 64pin IC802 71pin

IC802 62pin

IC802 63pin IC802 67pin

IC801 22pin IC802 71pin

IC802 62pin

IC801 19pin IC802 67pin

IC801 17pin IC802 71pin

IC802 64pin

IC802 67pin

IC802 63pin

IC802 86pin

IC802 64pin

IC802 64pin

IC802 64pin

IC802 50pin

IC802 82pin

QT-CD250

– 17 –

TROUBLESHOOTING (CD SECTION)

HOW TO USE

1. Using the brush in the cleaner cap, apply 1 or 2 drops of the cleaning fluid to the brush on the CD cleaner disc which hasthe mark next to it.

2. Place the CD cleaner disc onto the CD disc tray with the brush side down, then press the play button.3. You will hear music for about 20 seconds and the CD player will automatically stop. If it continues to turn, press the stop button.

CAUTION

The CD lens cleaner should be effective for 30 - 50 operations, however if the brushes become worn out earlier then pleasereplace the cleaner disc.If the CD cleaner brushes become very wet then wipe off any excess fluid with a soft cloth.Do not drink the cleaner fluid or allow it to come in contact with the eyes. In the event of this happening then drink and / orrinse with clean water and seek medical advice.The CD cleaner disc must not be used on car CD player or on computer CD ROM drives.All rights reserved. Unauthorized duplicating, broadcasting and renting product is prohibited by law.

Cleaning DiscPARTS CODE: UDSKA0004AFZZ

Cleaner Liquid

Figure 17

When the CD does not functionWhen the CD section does not operate when the objective lens of the optical pickup is dirty, this section may not operate. Cleanthe objective lens, and check the playback operation. When this section does not operate even after the above step is taken,checkthe following items.Remove the cabinet and follow the troubleshooting instructions."Track skipping and/or no TOC (Table Of Contents) may be caused by build up of dust other foreign matter on the laser pickuplens. Before attempting any adjustment make certain that the lens is clean. If not, clean it as mentioned below."

Turn the power off.Gently clean the lens with a lens cleaning tissue and a small amount of isopropyl alcohol.Do not touch the lens with the bare hand.

Dust gradually accumulates on the objective lens during use, and it may degrade performance.To avoid this problem, use a cleaning disc designed for CD optical pickup lenses.

Check the pickup-in switch (SW702) position.

Check the Focus system.

Yes

• The CD function will not work.

The CD operating keys don't work.

Check the power supply, 16.93 MHz clock, and reset terminal.

Yes

Yes

QT-CD250

– 18 –

• Laser failure.

YesNo

Check the laser come on when pattern cut between pin 8 (SEL) ofIC801 and pin 74 (SEL) of IC802.

YesNo

Check the peripheral parts of IC801 and Q801. If it is normal, theoptical pickup is faulty.

Check BI801/CNS801. If it is normal, the optical pickup isfaulty.

Is approx. 1.8V applied to the collector of Q801.

• Focus failure.

Does the optical pickup move up and down when the disc isremoved?

Is the following waveform ouput at the pin 62 (FEI) of IC802when the disc is set?

Is the waveform shown above input at the pin 63 (SBAD) ofIC802?

Yes

Yes

No

No

The optical pickup is faulty.

Check as stated in item "FOCUS SERVO SAWTOOTH WAVEFAILURE".

Yes

Check the periphery of IC801 and BI801/CNS801. Is it normal?

NoCheck the pattern between pin 13 of IC801 and pin 63 of IC802.Check the periphery of IC801 and BI801/CNS801.

IC801 is faulty.

Yes

Is +7.5V applied to the Collector of Q206 ?

Is +5V applied to the collector of Q204 and Q806 ?

YesNo

No

Check the PWB pattern of Q206.

Check the PWB Patten of IC204 and Q806.

Is +5V applied to the pin 75 (VDD) and pin 96 (MVDD) ofIC802 ?

Is +5V applied to the pin 1 (VCC) of IC801 ?

Yes

No

No

Check the PWB pattern between collector of Q806 and pin 75 ofIC802, and emiter of Q806 and Q804 and pin 96 of IC802.

Check the PWB pattern between collector of Q204 and pin 1 ofIC801.

pin 62

(FEI)

pin 86

(FOO)

pin 63

(SBAD)

Yes

Yes

Is +0V applied to the pin 74 (SEL) of IC802 ?

QT-CD250

– 19 –

• Focus servo sawtooth wave failure.

Is +7.5V applied to the pins 1 and 30 (VCC) of IC803 ?

Is sawtooh wave output to the pin 66 (FOO) of IC802 ? IC802 is faulty.No

Yes

Yes

Is sawtooth wave obtained between pins 20 and 21 of IC803 ?No

Check the PWB pattern of IC803.

Check the PWB pattern of IC803.No

Is sawtooth wave obtained between pins 3 and 4 of BI801/CNS801 ? (as shown above)

Yes

Check the PWB pattern between BI801/CNS801 and IC803.No

BI801/CNS801 connection failure or optical pickup failure.

Yes

• Spindle motor clv servo failure.

Is above wave obtained between pins 5 and 6 of IC803 ?

Is following wave output to the pin 72 (DMO) of IC802 whenthe Function is changed to "PLAY" from "STOP" ? No

Yes

Check the procedure in "HF ERROR".If OK. IC802 is faulty.

Check the PWB pattern between pin 72 (DMO) of IC802 and pins5 and 6 of IC803. If OK. IC803 is faulty.No

Is above wave obtained between pins 5 and 6 of BI803/CNS803 ?

Yes

Check the PWB pattern between BI803/CNS803 and IC803.No

BI803/CNS803 connection failure or optical pickup failure.

Yes

DMO

1.5~2.5sec

1.5~2.5sec

QT-CD250

– 20 –

• Sled motor operation failure.

Yes

Yes

Is following sled feed signal output the pin 71 (FMO) of IC802when FF/REW key is pressed after the CD TEST MODE isseted?

Is sled feed signal output the pins 10 and 11 of IC803?

Is sled feed voltage applied between both terminals of sledmotor?

No

Check the peripheral parts of IC803. If OK, IC803 is faulty.No

IC802 is faulty.

Check the BI803/CNS803.No

Yes

Check the CD mechanism (periphery of sled motor).If the sled motor does not run when DC2.0V is applied toboth terminals of sled motor, the sled motor is faulty.

• Sled servo failure.

Yes

Is following sled signal output the pin 71 (FMO) of IC802during playback?

Normal.

NoIC802 is faulty.

• Track search failure

Does the sled motor run in FF/REW state when the CDTEST MODE is set?

Is the following wave output to the pin 67 (TRO) of IC802during track search in normal playback?

Is the following wave output to the pins 12 (TEO) of IC801during track search in normal playback?

Yes

Yes

NoCheck as stated in item "SLED MOTOR OPERATION FAILURE".

NoIC802 failure.

NoCheck the PWB pattern between pin 67 (TRO) of IC802 and pin28 of IC803.Check the PWB pattern between pins 25 and 26 of IC803 andOptical pickup.If OK. Optical pickup failure.

Yes

Is the above wave output to the pins 64 (TEI) and 65 (TEZI)of IC802 during track serch in normal playback? No

Check the PWB pattern between pin 12 (TEO) of IC801 and pins 64(TEI) and 65 (TEZI) of IC802. If OK. IC801 failure.

Normal.

Yes

Yes

Is following sled feed signal input the pins 12 and 13 of IC803when FF/REW key is pressed after the CD TEST MODE isseted?

Check the PWB pattern between pin 71 of IC802 and pins 12 and13 of IC803.No

Is the following wave output to the pin 60 (RFZI) and 61(RFRP) of IC802 during track search in normal playback? No

Check the PWB pattern between pin 22 (RFO) and 18 (RFIS), 17(RFRP) of IC801 and pins 60 and 61 of IC802. If OK. IC801 failure.

Yes

TRO

TEO

TEI

TEZI

FF REW

FMO

FMO

RFRP

RFZI

FF REW

SL ±

QT-CD250

– 21 –

IC51 VHiLC72121/-1: Electronic Tuning (LC72121) (1/2)

1 Xtal XIN Output Crystal oscillator connection.(4.5 MHz/7.2 MHz)

2 Ground VSSX Output Ground terminal for the crystal oscillation circuit system of LC72121.

3 Chip enable CE Output High level when inputting serial data (DI) to LC72121 or sendingserial data (DO).

4 Input data DI Input Input terminal for serial data that is transferred from the controller toLC72121.

5 Clock CL Output Clock that synchronizes data when inputting serial data (DI) toLC72121 or sending serial data (DO).

6 Output data DO Output Output terminal that sends data from LC72121 to the controller. Theoutput data is defined by serial data DOC0-DOC2.

7* Output port BO1 Output Output dedicated terminal.Output state is defined by the serial data BO1-BO4.Data 0: OpenData 1: LTime base signal (8 Hz) output is possible from BO1 terminal.(When setting serial data TBC = 1.)

8-10 Output port BO2-BO4 Output Output dedicated terminal.Output state is defined by the serial data BO1-BO4.Data 0: OpenData 1: LTime base signal (8 Hz) output is possible from BO1 terminal.(When setting serial data TBC = 1.)

11 Input/output port IO1 Input/Output Terminal for both input and output.Input and output are defined by serial data IDC1 and IOC2.Data 0: Input portData 1: Output portWhen specified as the input port.The input terminal state is transferred from the DO terminal to thecontroller.Input state "L": Data -> 0Input state "H": Data -> 1When specified as the output port.Output state is defined by the serial data IO1 and IO2.Data 0: OpenData 1: LWhen turning on the power or resetting, the terminal becomes theinput port.

12 IF counter IF IN Input Input frequency is 0.4-12 MHz.Signal is transferred to the IF counter directly.The result is sent from M5B of the IF counter through DO.4 measuring times: 4, 8, 32, and 64 ms

13 Input/output port IO2 Input/Output Terminal for both input and output.Input and output are defined by serial data IDC1 and IOC2.Data 0: Input portData 1: Output portWhen specified as the input port.The input terminal state is transferred from the DO terminal to thecontroller.Input state "L": Data -> 0Input state "H": Data -> 1When specified as the output port.Output state is defined by the serial data IO1 and IO2.Data 0: OpenData 1: LWhen turning on the power or resetting, the terminal becomes theinput port.

14 Ground VSSD — Ground terminal for the digital system other than VSSA and VSSX ofLC72121.

Port Name TerminalName

Pin No. Input/Output Function

FUNCTION TABLE OF IC

In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.

QT-CD250

– 22 –

IC51 VHiLC72121/-1: Electronic Tuning (LC72121) (2/2)

15 Local oscillation, Signal input AMIN Input Serial data input: AMIN is selected when DVS = 0 is set.When serial data input SNS = 1 is set:Input frequency is 2-40 MHz.Signal is sent to the swallow counter directly.Dividing number to be set is 272- 65535. The actual dividing numberis the same as the setting value.When serial data input SNS = 0 is set.Input frequency is 0.5-10 MHz.Signal is transferred to the 12-bit programmable divider directly.Dividing number to be set is 4-4095. The actual dividing number isthe same as the setting value.

16 Local oscillation, Signal input FMIN Input Serial data input: FMIN is selected when DVS = 1 is set.Input frequency is 10-160 MHz.Signal is transferred to the swallow counter through the built-inprescaler (1/2).Dividing number to be set is 272-65535. The actual dividing numberis twice as the setting value because there is a built-in prescaler(1/2).

17 Power supply VDD — Power supply terminal for LC72121 (VDD = 2.7-3.5 V).Power on reset circuit works when POWER ON.

18 Charge pump output PD Output Charge pump output terminal for PLL.When the local oscillation signal frequency divided by N is higherthen the refernce frequency, "H" level is sent from the PD terminal.When it is lower, "L" level is sent. When the frequencies are thesame, they become high impedance.

19 L.P.F. Amplifier transistor AIN Input L.P.F. Amplifier transistor

20 L.P.F. Amplifier transistor AOUT Output L.P.F. Amplifier transistor

21 Ground VSSA — Ground terminal for the low-pass filter MOS transistor of LC72121.

22 Xtal XOUT Output Crystal oscillator connection.(4.5 MHz/7.2 MHz)

Port Name TerminalName

Pin No. Input/Output Function

Figure 22 BLOCK DIAGRAM OF IC

2

3

4

5

1

7 8 9

6

12

13

14

15

11

17

18

19

10

16

22

21

20

REFERENCEDIVIDER

PHASE DETECTORCHARCE PUMP

UNLOCKDETECTOR

UNIVERSALCOUNTER

DATA SHIFT REGISTERLATCH

12bits PROGRAMMABLEDIVIDER

SWALLOW COUNTER1/16, 1/17 4bits

1/2

CCBI/F

POWERON

RESET

PD

AIN

AOUT

VSSa

IFIN

BO1 BO2 BO3 BO4 IO1 IO2

AMIN

FMIN

CE

DI

CL

DO

VDD

VSSd

XOUT

XIN

VSSx

QT-CD250

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IC1 VHiTA2104BN-1: FM /AM IF MPX. (TA2104BN)

Figure 23 BLOCK DIAGRAM OF IC

IC202 VHiTC9260P/-1: Electronic Volume (TC9260P)

2 3 4 51 7 8 96 12

131415

11

171819

10

16222324 21 20

FMRE

AMMIX

FMMIX

BUFF

BUFF

FMOSC

AMOSC

LEVELDET

ST FW

IFREQ

1/8

ANDET

AFBUFF

AF

FMDET

AGCFMIFAMIF MUTE

ST/MOFM/AM

VCC

DIYIDEDECODE

LPF2LPF1DET OUTIFREQST INDOSC OUTAM OSCFM OSCAM RF IN FM RFFM RF OUT

RF GND MIX OUTFM RF ON AMLOW OUT

IFBUFF

Vcc AM IF IN FM IF IN GND AGC QUAD R-OUT L-OUT

MPX IN

2

3

4

5

1

7

8 9

6

12

13

14

15

11

10

16

DATA DECODER, STB GENERATOR

SHIFT REGRATER (13bit)

L-chLATCH

R-chLATCH

Vss VDD

OUT

IN

LD1

LD2

A-GND

CS

CK

L-chVOLUME

OUT

IN

LD1

LD2

A-GND

STB

DATA

R-chVOLUME

QT-CD250

– 24 –

IC802 VHiTC9457F2-1: Servo/Signal Control (TC9457F2) (1/4)

1* (OT5)S1 SEG1 Output Segment signal output to the LCD panel.2 (OT6)S2 SEG2 Output Up to 72 segments in a matrix with COM1 to COM4 can be displayed.3 (OT7)S3 SEG3 Output All of the S1 to S18 pins can be switched for output ports by a program.4 (OT8)S4 SEG4 Output Also, the S15 to S18 pins each can be switched for I/O ports individually.5 (OT9)S5 SEG5 Output When set for I/O ports, these pins become Nch open-drain output.6* (OT10)S6 SEG6 Output Furthermore, the S11 to S14 and the P8-0 to P8-3 pins can be switched for7* (OT11)S7 SEG7 Output use as CD signal (CLCK to IPF) input/output pins by a program.8* (OT12)S8 SEG8 Output • CLCK: Subcodes P thru W data readout clock input/output.9* (OT13)S9 SEG9 Output Selected between input and output by a command.10* (OT14)S10 SEG10 Output • DATA: Subcodes P thru W data output.11* (CLCK/OT15) SEG11 Output • SFSY: Playback system frame sync signal output.

S11 • LRCK: Channel clock (44.1kHz) output.12* (DATA/OT16) SEG12 Output It outputs a low for L channel and a high for R channel.

S12 Polarity can be inverted by a command.13* (SFSY/OT17) SEG13 Output • BCK : Bit clock (1.4122MHz) output.

S13 • AOUT: Audio data output.14* (LRCK/OT18) SEG14 Output • MBOV: Buffer memory-over signal output.

S14 It outputs a high when buffer overflows.15 (BCK/S15) SEG15 Output • IPF : Correction flag output. When AOUT is C2 correction output, it

P8-0 outputs a high indicating that correction is impossible.16 (AOUT/S16) SEG16 Output

P8-117 (MBOV/S17) SEG17 Output

P8-218 (IPF/S18) NC Output

P8-3

19 MVDD MVDD1 Input/Output Power supply pins.20 MVSS MVSS1 Input/Output Normally, apply a voltage of 4.5 to 5.5V to VDD.

In a backup state (when the CKSTP instruction executed), the device'scurrent consumption is reduced to 1µA or less, allowing for the supplyvoltage to be lowered to 2.0V.The device is reset and the program starts from address 0 when a voltageof 2.7V or more is applied to this pin when it is at 0V (power-on reset).

21* (K0)P1-0 CD-FUNC Input 4-bit CMOS I/O ports.22* (K1)P1-1 TUNER-FUNC Input These ports can be set for input or output bit for bit by a program.23 (K2)P1-2 DOOR IN Input These pins can be pulled up to VDD or down to GND by program.24 (K3)P1-3 PU IN Input Therefore, they can be used as key input pins. Also, when they are set for

I/O port, a change of state in this input can be used to clear the clock stopor wait mode.

25 (DCREF)P3-0 CD POWER Output 5-bit CMOS I/O ports.26 (ADin1)P3-1 KEY 1 Input These ports can be set for input or output bit for bit by a program.27 (ADin2)P3-2 KEY 2 Input The P3-0 to P4-0 pins serve dual purposes as analog inputs for the internal28 (ADin3)P3-3 ADIN 3 Input 6-bit 4-channel A/D converters.29 (BUZR/ NC Input The internal A/D converters can complete conversion in 6 instruction cycles

ADin4)P4-0 using a successive approximation method. The required pins can be set forA/D analog input bit for bit by a program. P3-0 can be set for referencevoltage input, and the internal power supply (MVDD) can be used for thisreference voltage.The P4-0 pin serves dual purposes as a buzzer output pin.The buzzer output can be selected from 8 frequencies, 0.625 to 3kHz.Each selected frequency can be output in one of four modes: continuous,single, 10Hz intermittent, and 10Hz intermittent at 1Hz interval.Whether or not to use and how to control the A/D converter and buzzer allcan be set by a prograam.

Port Name Terminal NamePin No. Input/Output

In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.

Function

QT-CD250

– 25 –

IC802 VHiTC9457F2-1: Servo/Signal Control (TC9457F2) (2/4)

30 (S12)P4-1 DI Input 3-bit CMOS I/O ports.31* (SO/S11/ DO Output DI: Tuner Data Input pin.

SDA)P4-2 DO: Tuner Data Output pin.32* (SCK/SCL) CL Output CL: Tuner/Volume Clock Output pin.

P4-3 These ports can be set for input or output bit for bit by a program.These pins serve dual purposes as input or output pins for the serialinterface circuit (SIO).The SIO is a 2-wire/3-wire compatible serial interface. 4 or 8 bits of serialdata, beginning with the MSB or LSB, are serially output from the SO/SDA,pin at each clock edge on the SCK/SCL pin, and the data on S11 or S12pin is serially input to the device.The serial clock (SCK/SCL) allows selection between the internal (450/225/150/75 kHz) and external sources and a selection of the active edge, rise orfall. Moreover, since the clock and data can be output via Nch open-drainoutputs, variouts, device controls and communication between controllerscan be greatly facilitated.When an SIO interrupt is enabled, an interrupt is generated at completionof SIO execution and the program jumps to address 4.All inputs to SIO contain a Schmitt trigger circuit.

33 TEST0 TEST0 Input Test mode control input pins.34 TEST1 TEST1 Input The test mode is selected when these pins are set high and normal35 TEST2 TEST2 Input operation is selected when they are low.36 TEST3 TEST3 Input37 TEST4 TEST4 Input38 TEST5 TEST5 Input

39* (OT19)/HSO CE_(PLL) Output CE_(PLL): Tuner Chip Enable Input pin.40* (OT20)SPCK STB_(VOL) Output STB_(VOL): Volume Storobe Input pin.41* (OT21)SPDA P_MUTE Output P_MUTE: MUTE ON/OFF Output pin.42* (OT22)COFS X-BASS Output X-BASS: X-BASS ON/OFF Output pin.

43* DOUT (N/C) Input/Output Digital output pin.

44* SBSY (N/C) Input/Output Subcode block sync output pin. It outputs a high at the S1 position whensubcode sync is detected.

45* SBOK (N/C) Input/Output Subcode Q data CRCC determination result output pin. It outputs a highwhen CRCC check is found OK.

46 VDD VDD1 Input/Output CD unit's digital block power supply pins.47 VSS VSS1 Input/Output Normally, apply 5V to VDD.

When not using a CD (CD off), this power supply can be turned off, withonly the controller power supply kept active, so that the contrller alone isoperating. In this case, the CD off bit must be set to 1. When this bit is setto 1, pins 11 through 18 and pins 39 through 42 all are changed for outputports if they have been set for CD control signal input/output pins.

48 P2VREF P2VREF Input/Output PLL block-2 VREF pin.

49 PDO PDO Input/Output This pin outputs a phase error between EFM and PLCK signals.

50 TMAX TMAX Input/Output TMAX detection result output pin.Selected by command bit TMPS.Longer than preset period: Outputs P2VREF.Shorter than preset period: Low level (Vss).Within preset period: High impedance.

51 LPFN LPFN Input/Output Inverted input of low-pass filter amp.

52 LPFO LPFO Input/Output Output of low-pass filter amp.

53 PVREF PVREF Input/Output PLL block VREF pin.

54 VCOF VCOF Input/Output VCO filter pin.

55 AVSS AVSS Input/Output Analog block ground pin.

56 SLCO SLCO Input/Output DAC output pin for data slice level generation.

57 RFI RFI Input/Output RF signal input pin.

58 AVDD AVDD Input/Output Analog block power supply pin.

59 RFCT RFCT Input/Output RFRP signal center level input pin.

60 RFZI RFZI Input/Output RFRP zero-cross input pin.

61 RFRP RFRP Input/Output RF ripple signal input pin.

62 FEI FEI Input/Output Focus error signal input pin.

Port Name Terminal NamePin No. Input/Output

In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.

Function

QT-CD250

– 26 –

IC802 VHiTC9457F2-1: Servo/Signal Control (TC9457F2) (3/4)

63 SBAD SBAD Input/Output Subbeam add signal input pin.

64 TEI TEI Input/Output Tracking error input pin.This input is read when tracking servo is on.

65 TEZI TEZI Input/Output Tracking error zero-cross input pin.

66 FOO FOO Input/Output Focus equalizer output pin.

67 TRO TRO Input/Output Tracking equalizer output pin.

68 VREF VREF Input/Output Analog reference power supply pin.

69 RFGC RFGC Input/Output RF amplitude adjusting control signal output pin. It outputs 3-level PWMsignals. (PWM carrier = 88.2kHz)

70 TEBC TEBC Input/Output Tracking balance control signal output pin. It outputs 3-level PWM signals.(PWM carrier = 88.2kHz)

71 FMO FMO Input/Output Focus equalizer output pin. It outputs 3-level PWM signals.(PWM carrier = 88.2kHz)

72 DMO DMO Input/Output Disc equalizer output pin. It outputs 3-level PWM signals.(PWM carrier = DSP block 88.2kHz, synchronized to PXO)

73 2VREF 2VREF Input/Output Analog reference power supply pin. (2 x VREF)

74 SEL SEL Input/Output APC circuit on/off signal output pin.When laser is on, this pin goes to a high-impedance state when UHS = lowand outputs a high when UHS = high

75 VDD VDD2 Input/Output CD unit's digital block power supply pins.76 VDD VSS2 Input/Output Normally, apply 5V to VDD.

When not using a CD (CD off), this power supply can be turned off, withonly the controller power supply kept active, so that the contrller alone isoperating. In this case, the CD off bit must be set to 1. When this bit is setto 1, pins 11 through 18 and pins 39 through 42 all are changed for outputports if they have been set for CD control signal input/output pins.

77 XVSS XVSS Input/Output CD's crystal oscillator power supply pins.Normally, connect these pins to the power supply lines that are used incommon for the VDD and VSS pins.

78 XI XI Input/Output CD's crystal oscillator input/output pins.79 XO XO Input/Output Normally, connect 16.934MHz here. This clock is used as the system clock

for the CD. After a system reset, it also is used as the system clock on thecontroller side.

80 XVDD XVDD Input/Output CD's crystal oscillator input/output pins.Normally, connect these pins to the power supply lines that are used incommon for the VDD and VSS pins.

81 DVSR DVSR Input/Output R-channel D/A converter unit ground pin.

82 RO RO Input/Output R-channel data forward output pin.

83 DVRR DVRR Input/Output R-channel reference voltage pin.

84 DVDD DVDD Input/Output D/A converter unit power supply pin.

85 DVRL DVRL Input/Output L-channel reference voltage pin.

86 LO LO Input/Output L-channel data forward output pin.

87 DVSL DVSL Input/Output L-channel D/A converter unit ground pin.

88 NC NC Input/Output NC pins. Normally, connect these pins to ground or leave them open.89* NC/VPP NC Input/Output

90 /RST RESET Input Device's system reset signal input pin.The device remains reset while RESET is held low and when RESET isreleased back high, the CD unit becomes operational and the programstarts from address 0. Normally, a system reset is asserted when a voltageof 2.7V or more is applied to VDD when it is at 0V (power-on reset).Therefore, this pin must be pulled high when used for this purpose.

Port Name Terminal NamePin No. Input/Output

In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.

Function

QT-CD250

– 27 –

IC802 VHiTC9457F2-1: Servo/Signal Control (TC9457F2) (4/4)

91 /HOLD HOLD Input This pin is used to input a signal that requests or clears the hold mode.Normally, use this pin for CD mode select signal input or battery detectionsignal input.There are two hold modes: clock stop mode (crystal oscillator turned off)and a wait mode (CPU stopped). These modes are entered by executingthe CKSTP and WAIT instructions, respectively.The clock stop mode can be requested by a programmed input: low leveldetection on HOLD pin or forced execution, and can be cleared bydetecting a high on the HOLD pin or a change of state in its input signal.When the CKSTP instruction is executed, the clock generator and the CPUstop operating and the device is placed in a memory backup state. Duringthis state, the device's current consumption is reduced to 1µA or less.At the same time, the display output and CMOS output ports areautomatically set low, and the Nch open-drain outputs are turned off.The wait mode is executed regardles of the input state on the HOLD pin,with the device's current consumption reduced.This mode is cleared by a change of state in the HOLD input.

92 INTR REMO-IN Input External interrupt input pin.When the interrupt facility is enabled and a pulse of 1.11 to 2.22µs induration is applied to this pin, an interrupt is generated and the programjumps to address 1. Input logic and the active edge (rise or fall) can beselected for each interrupt input.Also, the internal 8-bit time clock can be chosen for this interrupt input, inwhich case it is possible to count pulses or generate an interrupt at a givenpulse count (address 3).

93* MXO MXO Input/Output Crystal oscillator pins for the controller.94* MXI MXI Input/Output The oscillator clock is used as the timebase for the clock facility or as the

controller's system clock. Connect a 4.5MHz or 75kHz crystal resonator tothe MXO and MXI pins. Since these pins do not contain internal feedbackresistors, etc, an amp resistor or output resistor must be added external tothe chip.When using the clock generated by the CD unit's crystal oscillator forclocking the entire device operation, fix the MXI pin to the GND level.Oscillation is stopped by executing a CKSTP instruction.Select the crystal oscillator and control its operation by a program.

95 MVSS MVSS Input/Output Power supply pins.96 MVDD MVDD Input/Output Normally, apply a voltage of 4.5 to 5.5V to VDD.

In a backup state (when the CKSTP instruction executed), the device'scurrent consumption is reduced to 1µA or less, allowing for the supplyvoltage to be lowered to 2.0V.The device is reset and the program starts from address 0 when a voltageof 2.7V or more is applied to this pin when it is at 0V (power-on reset).

97 OT1 COM1 Output Common signal outputs to the LCD panel.98 OT2 COM2 Output Up to 72 segments in a matrix with S1 to S18 can be displayed.99 OT3 COM3 Output Three voltage levels MVDD, VEE (1/2 MVDD), and GND are output for100 OT4 COM4 Output 83Hz period at 2ms intervals.

After a system reset and after deassertion of a clock stop instruction, theVEE voltage is output and the DISP OFF bit is set to 0 before commonsignals are output.

Port Name Terminal NamePin No. Input/Output

In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.

Function

QT-CD250

– 28 –

— M E M O —

QT-CD250

PARTS GUIDE

NOTE:Parts marked with “ ” are important for maintaining the safety of the set.Be sure to replace parts with specified ones for maintaining the safety and performance of the set.

MODEL QT-CD250

“HOW TO ORDER REPLACEMENT PARTS”To have your order filled promptly and correctly, please furnish thefollowing information.

1. MODEL NUMBER 2. REF. No.3. PART NO. 4. DESCRIPTION

MARK: SPARE PARTS-DELIVERY SECTION

For U.S.A. onlyContact your nearest SHARP Parts Distributor to order.

For location of SHARP Parts Distributor,Please call Toll-Free;1-800-BE-SHARP

Explanation of capacitors/resistors parts codesCapacitorsVCC ....................... Ceramic typeVCK ........................ Ceramic typeVCT ........................ Semiconductor typeVC • • MF ............... Cylindrical type (without lead wire)VC • • MN ............... Cylindrical type (without lead wire)VC • • TV ................ Square type (without lead wire)VC • • TQ ............... Square type (without lead wire)VC • • CY ............... Square type (without lead wire)VC • • CZ ............... Square type (without lead wire)VC • • • • • • • • • J .. The 13th character represents capacity difference.

("J" ±5%, "K" ±10%, "M" ±20%, "N" ±30%, "C" ±0.25 pF, "D" ±0.5 pF, "Z" +80-20%.)

If there are no indications for the electrolytic capacitors, error is ±20%.

ResistorsVRD ....................... Carbon-film typeVRS ........................ Carbon-film typeVRN ....................... Metal-film typeVR • • MF ............... Cylindrical type (without lead wire)VR • • MN ............... Cylindrical type (without lead wire)VR • • TV ................ Square type (without lead wire)VR • • TQ ............... Square type (without lead wire)VR • • CY ............... Square type (without lead wire)VR • • CZ ............... Square type (without lead wire)VR • • • • • • • • • J .. The 13th character represents error.

("J" ±5%, "F" ±1%, "D" ±0.5%.)

If there are no indications for other parts, the resistors are ±5%carbon-film type.

PRICERANK DESCRIPTIONNO. PARTS CODE NO. PARTS CODE PRICE

RANK DESCRIPTION

QT-CD250

– 1 –

INTEGRATED CIRCUITS

IC1 VHITA2104BN-1 J AQ FM/AM IF MPX.,TA2104BNIC51 VHILC72121/-1 J AN Electronic Tuning,LC72121IC101 VHIBA3311L/-1 J AK REC./P.B.Equalizer Amp.,

BA3311LIC201 VHITA8227P/-1 J AH Power Amp.,TA8227PIC202 VHITC9260P/-1 J AN Electronic Volume,TC9260PIC801 VHITA2109F/-1 J AL Servo Pre Amp.,TA2109FIC802 VHITC9457F2-1 J AZ Servo/Signal Control,TC9457F2IC803 VHILA6541D/-1 J AW Focus/Tracking/Spin/Sled Driver,

LA6541D

TRANSISTORS

Q1 VSKTC3199GR-1 J AB Silicon,NPN,KTC3199 GRQ2 VSKRA102M//-1 J AC Digital,PNP,KRA102 MQ201,202 VSKTC3199GR-1 J AB Silicon,NPN,KTC3199 GRQ203 VSKTA1266GR-1 J AB Silicon,PNP,KTA1266 GRQ204 VSKTA1273Y/-1 J AE Silicon,PNP,KTA1273 YQ205 VSKTC3199GR-1 J AB Silicon,NPN,KTC3199 GRQ206 VSKTA1046Y/-1 J AC Sillicon,PNP,KTA1046 YQ207 VSKTC3199GR-1 J AB Silicon,NPN,KTC3199 GRQ209~212 VSKTC3199GR-1 J AB Silicon,NPN,KTC3199 GRQ351 VSKTC3199GR-1 J AB Silicon,NPN,KTC3199 GRQ801 VSKTA1266GR-1 J AB Silicon,PNP,KTA1266 GRQ802 VSKTA1273Y/-1 J AE Silicon,PNP,KTA1273 YQ803 VSKRC107M//-1 J AC Digital,NPN,KRC107 MQ804 VSKTA1266GR-1 J AB Silicon,PNP,KTA1266 GRQ805 VSKRC107M//-1 J AC Digital,NPN,KRC107 MQ806 VSKTA1273Y/-1 J AE Silicon,PNP,KTA1273 Y

DIODES

D1 VHD1N4148//-1 J AA Silicon,1N4148D101,102 VHD1N4148//-1 J AA Silicon,1N4148D201~205 VHD1N4148//-1 J AA Silicon,1N4148D651~654 VHD1N4004//-1 J AB Silicon,1N4004D801~806 VHD1N4148//-1 J AA Silicon,1N4148VD1,2 VHCKV1370NT-1 J AG Variable Capacitance,KV1370NTVD3 VHCKV1520NT-1 J AK Variable Capacitance,KV1520NTZD201 VHEDZ5R1BSB-1 J AC Zener,5.1V,DZ5.1BSBZD202 VHEDZ7R5BSB-1 J AB Zener,7.5V,DZ7.5BSBZD203 VHEDZ2R4BSB-1 J AB Zener,2.4V,DZ2.4BSB

FILTERS

CF1 RFILF0006SJZZ J AE FM IFCF3 RFILA0003SJZZ J AF AM IFCF4 RFILF0005SJZZ J AF FM DetectionF1 RFILR0001SJZZ J AD FM Band Pass Filter

TRANSFORMERS

T3 RCILI0008SJZZ J AC AM IF! T651 RTRNP0036SJZZ J AQ Power

COILS

COR1 RCORF0005SJZZ J AB CoreCOR801 RCORF0005SJZZ J AB CoreL1 RCILR0004SJZZ J AE FM RFL2 RCILB0015SJZZ J AC FM OscillationL3 RCILA0011SJZZ J AC AM Bar AntennaL4 RCILB0014SJZZ J AC AM OscillationL51 VP-DH101K0000 J AB 100 µH,ChokeL301 RCILB0003SJZZ J AD Bias OscillationL801 VP-DH221K0000 J AB 220 µH,ChokeL803 VP-DH221K0000 J AB 220 µH,ChokeL807 VP-DHR82K0000 J AE 0.82 µH,Choke

VARIABLE CAPACITOR

TC1 RTO-H1003SJZZ J AG Trimmer

VIBRATORS

X51 RCRSP0003SJZZ J AL Crystal,4.5 MHz

X801 RCRM-0002SJZZ J AE Ceramic,16.93 MHzX802 RCRM-0003SJZZ J AK Ceramic,4.19 MHz

CAPACITORS

C1 VCCCPA1HH150J J AA 15 pF (CH),50VC2 VCKYPA1HB102K J AA 0.001 µF,50VC3 VCKZPA1HF103Z J AA 0.01 µF,50VC5 VCKYTV1EF104Z J AA 0.1 µF,25VC6 VCCCPA1HH220J J AA 22 pF (CH),50VC7,8 VCKYPA1HB102K J AA 0.001 µF,50VC9 VCKZPA1HF223Z J AA 0.022 µF,50VC10 VCCUPA1HJ8R0D J AA 8 pF,50VC11 VCCSPA1HL361J J AA 360 pF,50VC12 RC-GZA105AF1H J AB 1 µF,50V,ElectrolyticC13 RC-GZA474AF1H J AA 0.47 µF,50V,ElectrolyticC14 VCKZPA1HF473Z J AA 0.047 µF,50VC15 RC-GZA227AF1A J AB 220 µF,10V,ElectrolyticC16 RC-GZA475AF1H J AB 4.7 µF,50V,ElectrolyticC18 VCKYTV1HB102K J AA 0.001 µF,50VC19 RC-GZA225AF1H J AB 2.2 µF,50V,ElectrolyticC20 VCKYPA1HB331K J AA 330 pF,50VC21 RC-GZA106AF1C J AB 10 µF,16V,ElectrolyticC22 RC-GZA105AF1H J AB 1 µF,50V,ElectrolyticC23 RC-GZA106AF1C J AB 10 µF,16V,ElectrolyticC24 VCTYPA1CU104M J AB 0.1 µF,16VC25 VCKZPA1HF473Z J AA 0.047 µF,50VC26 VCTYPA1CU104M J AB 0.1 µF,16VC27 VCKYPA1HB102K J AA 0.001 µF,50VC29 VCKYPA1HB101K J AA 100 pF,50VC32 VCKYTV1EF104Z J AA 0.1 µF,25VC33,34 VCKYTV1HB221K J AA 220 pF,50VC51 VCCCPA1HH150J J AA 15 pF (CH),50VC52 VCCCPA1HH120J J AA 12 pF (CH),50VC53 RC-GZA107AF1A J AB 100 µF,10V,ElectrolyticC54 VCKZPA1HF223Z J AA 0.022 µF,50VC55 RC-GZA225AF1H J AB 2.2 µF,50V,ElectrolyticC56 VCKZPA1HF223Z J AA 0.022 µF,50VC57,58 VCKYTV1HB101K J AA 100 pF,50VC59 VCKZPA1HF103Z J AA 0.01 µF,50VC60 VCKYPA1HB222K J AA 0.0022 µF,50VC61 RC-GZA107AF1A J AB 100 µF,10V,ElectrolyticC68 VCKYTV1HB221K J AA 220 pF,50VC71,72 VCQYKA1HM223K J AB 0.022 µF,50V,MylarC73,74 RC-GZA105AF1H J AB 1 µF,50V,ElectrolyticC75 VCKYPA1HB101K J AA 100 pF,50VC105,106 VCKYPA1HB182K J AB 0.0018µF,50VC107,108 VCKYPA1HB821K J AA 820 pF,50VC109,110 VCKYPA1HB271K J AA 270 pF,50VC111,112 VCKYPA1HB331K J AA 330 pF,50VC113,114 RC-GZA476AF1C J AB 47 µF,16V,ElectrolyticC115,116 VCQYKA1HM183K J AB 0.018 µF,50V,MylarC117,118 RC-GZA106AF1C J AB 10 µF,16V,ElectrolyticC119 RC-GZA225AF1H J AB 2.2 µF,50V,ElectrolyticC120 RC-GZA476AF1C J AB 47 µF,16V,ElectrolyticC121,122 VCKZPA1HF103Z J AA 0.01 µF,50VC123 RC-GZA227AF1A J AB 220 µF,10V,ElectrolyticC201 RC-GZA107AF1C J AB 100 µF,16V,ElectrolyticC202 RC-GZA476AF1C J AB 47 µF,16V,ElectrolyticC203 VCKZPA1HF103Z J AA 0.01 µF,50VC204 VCKZPA1HF223Z J AA 0.022 µF,50VC205,206 RC-GZA476AF1C J AB 47 µF,16V,ElectrolyticC207 RC-GZA477AF1A J AC 470 µF,10V,ElectrolyticC208 VCKZPA1HF223Z J AA 0.022 µF,50VC209 VCKZPA1HF103Z J AA 0.01 µF,50VC210 VCKZPA1HF223Z J AA 0.022 µF,50VC211,212 VCKZPA1HF473Z J AA 0.047 µF,50VC213,214 RC-GZA105AF1H J AB 1 µF,50V,ElectrolyticC215,216 VCQYKA1HM104K J AB 0.1 µF,50V,MylarC217,218 VCQYKA1HM152K J AB 0.0015 µF,50V,MylarC219,220 RC-GZA105AF1H J AB 1 µF,50V,ElectrolyticC221,222 VCKYPA1HB102K J AA 0.001 µF,50VC223,224 RC-GZA104AF1H J AB 0.1 µF,50V,ElectrolyticC225 RC-GZA107AF1A J AB 100 µF,10V,ElectrolyticC226 VCKZPA1HF223Z J AA 0.022 µF,50VC227 RC-GZW478AF1C J AF 4700 µF,16V,ElectrolyticC229~232 RC-GZA105AF1H J AB 1 µF,50V,ElectrolyticC233,234 RC-GZA477AF1A J AC 470 µF,10V,ElectrolyticC235~238 RC-GZA107AF1A J AB 100 µF,10V,ElectrolyticC239,240 VCQYKA1HM104K J AB 0.1 µF,50V,MylarC241,242 RC-GZA105AF1H J AB 1 µF,50V,Electrolytic

NO. PRICERANK DESCRIPTIONPARTS CODENO. PARTS CODE

PRICERANK DESCRIPTION

QT-CD250

– 2 –

C243,244 VCKYPA1HB331K J AA 330 pF,50VC245 RC-GZA105AF1H J AB 1 µF,50V,ElectrolyticC246 RC-GZA106AF1C J AB 10 µF,16V,ElectrolyticC247 RC-GZA227AF1A J AB 220 µF,10V,ElectrolyticC249 VCKYPA1HB101K J AA 100 pF,50VC302 VCKZPA1HF223Z J AA 0.022 µF,50VC351 VCQYKA1HM222K J AA 0.0022 µF,50V,MylarC352 RC-GZA107AF1A J AB 100 µF,10V,ElectrolyticC353 VCQYKA1HM562K J AA 0.0056 µF,50V,MylarC354 VCQYKA1HM223K J AB 0.022 µF,50V,MylarC651~654 VCKZPA1HF223Z J AA 0.022 µF,50VC801 VCKZPA1HF103Z J AA 0.01 µF,50VC802 VCKZPA1HF223Z J AA 0.022 µF,50VC804 VCCCPA1HH2R0C J AA 2 pF (CH),50VC805 VCKYTV1EF223Z J AA 0.022 µF,25VC806 RC-GZA337AF1A J AB 330 µF,10V,ElectrolyticC807 VCKZPA1HF473Z J AA 0.047 µF,50VC810 RC-GZA106AF1C J AB 10 µF,16V,ElectrolyticC813 RC-GZA476AF1C J AB 47 µF,16V,ElectrolyticC814 VCKZPA1HF473Z J AA 0.047 µF,50VC815 RC-GZA476AF1C J AB 47 µF,16V,ElectrolyticC816 VCKZPA1HF223Z J AA 0.022 µF,50VC817 RC-GZA107AF1A J AB 100 µF,10V,ElectrolyticC818 VCCSPA1HL560J J AA 56 pF,50VC819,820 VCQYKA1HM104K J AB 0.1 µF,50V,MylarC821 RC-GZA107AF1A J AB 100 µF,10V,ElectrolyticC822 VCKZPA1HF473Z J AA 0.047 µF,50VC823 VCKYTV1EF223Z J AA 0.022 µF,25VC824,825 RC-GZA476AF1C J AB 47 µF,16V,ElectrolyticC826 VCCSPA1HL470J J AA 47 pF,50VC827 VCQYKA1HM153K J AB 0.015 µF,50V,MylarC828 VCKYPA1HB272K J AA 0.0027 µF,50VC829 VCKYPA1HB472K J AB 0.0047 µF,50VC830 VCQYKA1HM103K J AA 0.01 µF,50V,MylarC832 RC-GZA476AF1C J AB 47 µF,16V,ElectrolyticC833 VCQYKA1HM333K J AB 0.033 µF,50V,MylarC834,835 VCKYPA1HB471K J AA 470 pF,50VC836~839 VCQYKA1HM473K J AB 0.047 µF,50V,MylarC840 VCKYTV1EF104Z J AA 0.1 µF,25VC841,842 VCKZPA1HF473Z J AA 0.047 µF,50VC843 RC-GZA476AF1C J AB 47 µF,16V,ElectrolyticC844 RC-GZA107AF1A J AB 100 µF,10V,ElectrolyticC845 VCKZPA1HF473Z J AA 0.047 µF,50VC846 RC-GZA105AF1H J AB 1 µF,50V,ElectrolyticC847,848 RC-GZA226AF1C J AB 22 µF,16V,ElectrolyticC849,850 VCKYPA1HB222K J AA 0.0022 µF,50VC851,852 RC-GZA335AF1H J AB 3.3 µF,50V,ElectrolyticC853 VCKZPA1HF223Z J AA 0.022 µF,50VC854 VCKYPA1HB682K J AB 0.0068 µF,50VC856 VCKYPA1HB101K J AA 100 pF,50VC862 VCKYTV1EF104Z J AA 0.1 µF,25VC863 RC-GZA476AF1C J AB 47 µF,16V,ElectrolyticC864 VCKYTV1EF104Z J AA 0.1 µF,25VC865 RC-GZA107AF1A J AB 100 µF,10V,ElectrolyticC870 VCKYTV1HB101K J AA 100 pF,50VC872 VCKYTV1HB472K J AA 0.0047 µF,50V

RESISTORS

R1 VRD-ST2CD332J J AA 3.3 kohms,1/6WR2,3 VRD-ST2CD104J J AA 100 kohm,1/6WR4 VRD-ST2CD100J J AA 10 ohm,1/6WR5 VRD-ST2CD223J J AA 22 kohms,1/6WR6 VRD-ST2CD153J J AA 15 kohms,1/6WR7 VRD-ST2CD103J J AA 10 kohm,1/6WR8 VRD-ST2CD224J J AA 220 kohms,1/6WR10 VRD-ST2CD331J J AA 330 ohms,1/6WR12 VRD-ST2CD100J J AA 10 ohm,1/6WR13 VRD-ST2CD103J J AA 10 kohm,1/6WR14 VRS-TV2AB222J J AA 2.2 kohms,1/10WR15 VRD-ST2CD393J J AA 39 kohms,1/6WR16 VRD-ST2CD332J J AA 3.3 kohms,1/6WR17 VRD-ST2CD473J J AA 47 kohms,1/6WR18 VRD-ST2CD101J J AA 100 ohm,1/6WR20 VRS-TV2AB471J J AA 470 ohms,1/10WR51 VRD-ST2CD151J J AA 150 ohms,1/6WR52 VRD-ST2CD222J J AA 2.2 kohms,1/6WR53 VRD-ST2CD472J J AA 4.7 kohms,1/6WR54 VRD-ST2CD103J J AA 10 kohm,1/6WR55 VRD-ST2CD563J J AA 56 kohms,1/6WR58~62 VRD-ST2CD102J J AA 1 kohm,1/6W

R71,72 VRD-ST2CD472J J AA 4.7 kohms,1/6WR73,74 VRD-ST2CD332J J AA 3.3 kohms,1/6WR76 VRD-ST2CD821J J AA 820 ohms,1/6WR77 VRS-TV2AB332J J AA 3.3 kohms,1/10WR101,102 VRD-ST2CD331J J AA 330 ohms,1/6WR103,104 VRD-ST2CD123J J AA 12 kohms,1/6WR105,106 VRD-ST2CD153J J AA 15 kohms,1/6WR107,108 VRD-ST2CD102J J AA 1 kohm,1/6WR109,110 VRD-ST2CD121J J AA 120 ohms,1/6WR113,114 VRD-ST2CD822J J AA 8.2 kohms,1/6WR115~118 VRD-ST2CD392J J AA 3.9 kohms,1/6WR119,120 VRD-ST2CD332J J AA 3.3 kohms,1/6WR121,122 VRD-ST2CD272J J AA 2.7 kohms,1/6WR123,124 VRD-ST2CD332J J AA 3.3 kohms,1/6WR125 VRD-ST2CD684J J AA 680 kohms,1/6WR126 VRD-ST2CD101J J AA 100 ohm,1/6WR201 VRD-ST2CD122J J AA 1.2 kohms,1/6WR202 VRD-ST2CD103J J AA 10 kohm,1/6WR203 VRD-ST2CD271J J AA 270 ohms,1/6WR204 VRD-ST2CD222J J AA 2.2 kohms,1/6WR205 VRD-ST2CD472J J AA 4.7 kohms,1/6WR206,207 VRD-ST2CD561J J AA 560 ohms,1/6WR209,210 VRD-ST2CD102J J AA 1 kohm,1/6WR211,212 VRD-ST2CD473J J AA 47 kohms,1/6WR213 VRD-ST2CD101J J AA 100 ohm,1/6WR214~216 VRD-ST2CD102J J AA 1 kohm,1/6WR217,218 VRD-ST2CD822J J AA 8.2 kohms,1/6WR219,220 VRD-ST2CD224J J AA 220 kohms,1/6WR221~224 VRD-ST2CD472J J AA 4.7 kohms,1/6WR225 VRD-ST2CD104J J AA 100 kohm,1/6WR227,228 VRD-ST2CD121J J AA 120 ohms,1/6WR230 VRD-ST2EE2R7J J AA 2.7 ohms,1/4WR231,232 VRD-ST2CD121J J AA 120 ohms,1/6WR233,234 VRD-ST2CD222J J AA 2.2 kohms,1/6WR235,236 VRD-ST2CD473J J AA 47 kohms,1/6WR237,238 VRD-ST2CD272J J AA 2.7 kohms,1/6WR239,240 VRD-ST2CD222J J AA 2.2 kohms,1/6WR241,242 VRD-ST2CD103J J AA 10 kohm,1/6WR243,244 VRD-ST2CD564J J AA 560 kohms,1/6WR245,246 VRD-ST2CD562J J AA 5.6 kohms,1/6WR247,248 VRD-ST2CD561J J AA 560 ohms,1/6WR249 VRD-ST2CD221J J AA 220 ohms,1/6WR250 VRD-ST2CD474J J AA 470 kohms,1/6WR251,252 VRD-ST2CD223J J AA 22 kohms,1/6WR253 VRD-ST2CD392J J AA 3.9 kohms,1/6WR351 VRD-ST2CD101J J AA 100 ohm,1/6WR352 VRD-ST2CD151J J AA 150 ohms,1/6WR353 VRD-ST2CD333J J AA 33 kohms,1/6WR354 VRD-ST2CD4R7J J AA 4.7 ohms,1/6WR455,456 VRD-ST2CD153J J AA 15 kohms,1/6WR457,458 VRD-ST2CD102J J AA 1 kohm,1/6WR801 VRD-ST2EE220J J AA 22 ohms,1/4WR802 VRD-ST2CD222J J AA 2.2 kohms,1/6WR803 VRD-ST2CD823J J AA 82 kohms,1/6WR804 VRD-ST2CD683J J AA 68 kohms,1/6WR805 VRD-ST2CD393J J AA 39 kohms,1/6WR806 VRD-ST2CD272J J AA 2.7 kohms,1/6WR807 VRD-ST2CD102J J AA 1 kohm,1/6WR808 VRD-ST2CD101J J AA 100 ohm,1/6WR811 VRD-ST2CD223J J AA 22 kohms,1/6WR812 VRD-ST2CD102J J AA 1 kohm,1/6WR820 VRD-ST2CD473J J AA 47 kohms,1/6WR821 VRS-TV2AB102J J AA 1 kohm,1/10WR824,825 VRD-ST2CD103J J AA 10 kohm,1/6WR826 VRD-ST2CD224J J AA 220 kohms,1/6WR827 VRD-ST2CD153J J AA 15 kohms,1/6WR828 VRD-ST2CD103J J AA 10 kohm,1/6WR829 VRD-ST2CD332J J AA 3.3 kohms,1/6WR830 VRD-ST2CD103J J AA 10 kohm,1/6WR831~834 VRD-ST2CD332J J AA 3.3 kohms,1/6WR835,836 VRD-ST2CD271J J AA 270 ohms,1/6WR837,838 VRD-ST2CD103J J AA 10 kohm,1/6WR839 VRD-ST2CD473J J AA 47 kohms,1/6WR840 VRD-ST2EE100J J AA 10 ohm,1/4WR841 VRD-ST2CD562J J AA 5.6 kohms,1/6WR842 VRD-ST2CD223J J AA 22 kohms,1/6WR843 VRD-ST2CD472J J AA 4.7 kohms,1/6WR844,845 VRD-ST2CD223J J AA 22 kohms,1/6WR846 VRD-ST2CD472J J AA 4.7 kohms,1/6WR847 VRD-ST2CD562J J AA 5.6 kohms,1/6WR848 VRD-ST2CD103J J AA 10 kohm,1/6WR849 VRD-ST2CD183J J AA 18 kohms,1/6W

PRICERANK DESCRIPTIONNO. PARTS CODE NO. PARTS CODE PRICE

RANK DESCRIPTION

QT-CD250

– 3 –

R850 VRD-ST2CD152J J AA 1.5 kohms,1/6WR851~853 VRD-ST2CD222J J AA 2.2 kohms,1/6WR854 VRD-ST2CD101J J AA 100 ohm,1/6WR855 VRD-ST2CD183J J AA 18 kohms,1/6WR856 VRD-ST2CD153J J AA 15 kohms,1/6WR857 VRD-ST2CD473J J AA 47 kohms,1/6WR860 VRD-ST2CD472J J AA 4.7 kohms,1/6WR861 VRD-ST2CD103J J AA 10 kohm,1/6WR862 VRD-ST2CD473J J AA 47 kohms,1/6WR863 VRS-TV2AB182J J AA 1.8 kohms,1/10WR864 VRS-TV2AB105J J AA 1 Mohm,1/10WR865 VRD-ST2CD473J J AA 47 kohms,1/6WR866 VRD-ST2CD332J J AA 3.3 kohms,1/6WR867~873 VRD-ST2CD472J J AA 4.7 kohms,1/6WR875~878 VRD-ST2CD103J J AA 10 kohm,1/6WR879 VRD-ST2CD472J J AA 4.7 kohms,1/6WR882~895 VRD-ST2CD473J J AA 47 kohms,1/6WR896,897 VRS-TV2AB473J J AA 47 kohms,1/10WR898~901 VRD-ST2CD473J J AA 47 kohms,1/6W

OTHER CIRCUITRY PARTS

BI801/CNS801 QCNWN0158SJZZ J AF Connector Ass’y,8/8PinBI802/CNS802 QCNWN0159SJZZ J AD Connector Ass’y,5/5PinBI803/CNS803 QCNWN0115SJZZ J AE Connector Ass’y,6/6PinCNP101 QCNCW001DSJZZ J AC Plug,4PinCNP201 QCNCW001CSJZZ J AC Plug,3PinCNP602 QCNCW002CSJZZ J AD Plug,3PinCNP801 QCNCM010DAWZZ J Plug,4PinCNP803 QCNCM932FAFZZ J AC Plug,6PinCNS101 QCNWN0010SJZZ J AG Connector Ass’y,4PinCNS201 QCNWN0157SJZZ J AC Connector Ass’y,3PinCNS602 QCNWN0165SJZZ J AC Connector Ass’y,3PinCNS801 QCNCW010DAWZZ J Connector Ass’y,4PinFW801 QCNWN0166SJZZ J AD Flat Wire,12PinFW802 QCNWN0167SJZZ J AD Flat Wire,11PinHPJ201 QJAKM0001SJZZ J AG Jack,HeadphoneLCD801 RV-LX0009SJZZ J AM LCD DisplayM601(240-6) 9GD192112346 J AX Motor with Pulley [Tape]M701 RMOTV0409AFM1 J AN Motor with Gear [Sled]M702 RMOTV0408AFM3 J AN Motor with Chassis [Spindle]

! SO651 QSOCA0001SJZZ J AE AC Inlet Socketor

! SO651 QSOCA0005SJZZ J AE AC Inlet SocketSP201,202 RSPA10001SJ4P J Speaker,WooferSW102 QSW-S0001SJZZ J AD Switch,Slide Type

[Record/Playback]SW201 QSW-S0008SJZZ J AG Switch,Slide Type

[Function Selector]SW601(240-7) 9GD640101149 J Switch,Leaf Type [Tape Main]SW702 QSW-F9001AWZZ J AE Switch,Push Type [Pickup In]SW801 QSW-K0001SJZZ J AC Switch,Key Type

[Play/Pause/Tuning Up]SW802 QSW-K0001SJZZ J AC Switch,Key Type

[Stop/Tuning Down]SW803 QSW-K0001SJZZ J AC Switch,Key Type [Repeat/Band]SW804 QSW-K0001SJZZ J AC Switch,Key Type

[Tuner/Memory]SW805 QSW-K0001SJZZ J AC Switch,Key Type

[Cue/Preset Up]SW806 QSW-K0001SJZZ J AC Switch,Key Type

[Review/Preset Down]SW807 QSW-K0001SJZZ J AC Switch,Key Type [Volume Up]SW808 QSW-K0001SJZZ J AC Switch,Key Type [Volume Down]SW809 QSW-K0001SJZZ J AC Switch,Key Type [X-BASS]SW810 QSW-F0001SJZZ J AD Switch,Leaf [CD Lid]UN801 VHLN64H380A-1 J AK Remote Sensor,N64H380A

CD MECHANISM PARTS

301 NGERH0586AFZZ J AC Gear,Middle302 NGERH0587AFZZ J AC Gear,Drive303 MLEVP1054AFZZ J AC Rail,Guide304 NSFTM0291AFFW J AD Shaft,Guide305 PCUSG0613AFZZ J AC Cushion

! 306 DCTRH8003SJ01 J BC Pickup Unit Ass’y701 XBSSD26P06000 J AA Screw,ø2.6×6mm702 XHBSD20P05000 J AA Screw,ø2×5mm703 XBBSD20P03000 J AA Screw,ø2×3mm704 LX-WZ1070AFZZ J AA Washer,ø1.5×ø3.8×0.25mmM701 RMOTV0409AFM1 J AN Motor with Gear [Sled]

M702 RMOTV0408AFM3 J AN Motor with Chassis [Spindle]SW702 QSW-F9001AWZZ J AE Switch,Push Type [Pickup In]

CABINET PARTS

201 GCABA1045SJM1 J AR Front Cabinet202 GCABB1045SJSA J AR Top Cabinet203 GFTAT1004SJSB J AD CD Lid204 CHLDM1001SJ01 J AG Stabilizer Ass’y204- 1 PMAGF0002AWZZ J AE Magnet204- 2 LHLDM1001SJZZ J AC Holder,Stabilizer204- 3 PSHEZ0003SJZZ J AG Sheet,Stabilizer Holder205 GFTAB1009SJSB J AD Battery Compartment Lid,Rear206 GFTAC0004SJSB J Cassette Holder207 GCOVA1002SJSA J AB Cover,Remote Sensor208 HPNLC1052SJSA J AB Panel,Control209 HDECQ0038SJSA J AD Ring,Speaker210 LHLDZ1028SJZZ J AC Holder,CD Control PWB211 JBTN-0013SJSB J AB Button,Pause212 JBTN-0014SJSB J AB Button,Stop/Eject213 JBTN-0015SJSB J AB Button,Fast Forward214 JBTN-0016SJSB J AB Button,Rewind215 JBTN-0017SJSB J AB Button,Play216 JBTN-0018SJSB J AB Button,Record217 JHNDP1003SJSB J AG Handle218 JKNBK0026SJSA J AB Knob,X-BASS/Volume219 JKNBZ0043SJSA J AD Knob,Function220 JKNBZ0044SJSA J AB Button,CD Stop221 JKNBZ0045SJSA J AC Button,CD Play/Pause222 CGERH0001SJ01 J AF Damper Gear Ass’y223 LANGK0001SJFW J AC Bracket,Button224 LANGZ0004SJZA J Bracket,Battery225 LHLDA1001SJZZ J AC Holder,AM Bar Antenna226 LHLDW1001SJZZ J AD Nylon Band227 RCORF0002SJZZ J AC Core228 LHLDZ1027SJZZ J AB Holder,LCD229 MSPRC0004SJFN J AB Spring,Battery,-230 MSPRC0005SJFD J AB Spring,Battery,+/-231 MSPRD0002SJFD J AC Spring,CD Lid232 MSPRD0009SJFD J AB Spring,Cassette Holder Up233 MSPRZ0002SJFD J AB Spring,Rod Antenna234 LHLDZ1029SJZZ J AD Holder,CD Switch PWB235 PGUMS0001SJZZ J AB Cushion,CD Lid236 PSLDM3003SJFW J AB Bracket,Shield237 QANTR0003SJZZ J AL Rod Antenna238 MSPRP0002SJFW J AC Bracket,Record239 HDECQ0039SJSA J AD Decoration Plate,LCD Display240 CMECB0003SJ01 J AZ Tape Mechanism Ass’y240- 1 9GD192104309 J AR Pinch Roller Arm Ass’y240- 2 9GD19210703 J AE Belt,REW/FF240- 3 9GD19210938 J Belt,Main240- 4 9GD62140116 J AT Head,Record/Playback240- 5 9GD62071008 J AQ Head,Erase240- 5 9GD62091010 J AM Head,Erase240- 6(M601) 9GD192112346 J AX Motor with Pulley [Tape]240- 7(SW601) 9GD640101149 J Switch,Leaf Type [Tape Main]241 MSPRC0003SJFE J AF Spring,Battery,-242 PRDAR0029SJZZ J AC Heat Sink,Q206243 PRDAR0030SJZZ J Heat Sink,IC201244 GFTAB1010SJSA J AD Battery Compartment Lid,Bottom245 QCNWN0222SJZZ J Lead Wire with Lug601 XUBSD30P18000 J Screw,ø3×18mm602 XUBSD25P10000 J AB Screw,ø2.5×10mm603 XUPSD25P08000 J AB Screw,ø2.5×8mm604 XUBSD30P10000 J AA Screw,ø3×10mm605 XUBSD30P12000 J AA Screw,ø3×12mm606 XUPSD25P08000 J AB Screw,ø2.5×8mm607 XWHSD28-08120 J AB Washer,ø2.8×ø12×0.8mm610 XHPSD20P03000 J AA Screw,ø2×3mm

PACKING PARTS (For Central America)

SPAKA0036SJZZ J AG Packing Add.,Left/RightSPAKC0112SJZZ J Packing CaseSPAKZ0013SJZZ J AB Top Pad,Packing CaseSSAKH0001SJZZ J AC Polyethylene Bag,UnitSSAKK0002SJZZ J AC Polyethylene Bag,

AC Power Supply CordTLABR1098SJZZ J Label,Bar Code,Packing CaseTLABZ0015SJZZ J AC Label,VJ No.,Packing Case

NO. PARTS CODEPRICERANK DESCRIPTION

QT-CD250

– 4 –

ACCESSORIES

! QACCU0001SJ00 J AR AC Power Supply CordTINSE0040SJZZ J AC Operation ManualTLABZ SJZZ J Label,FeatureRRMCG0023SJSA J AU Remoto Control

J Battery Lid,Remoto Control

P.W.B. ASSEMBLY (Not Replacement Item)

PWB-A1~7 DCEK-0008SJ03 J — Main/CD Control/Power/Switch/Terminal A/Terminal B/Washer(Combined Ass’y)

PWB-B QPWBF3895AFZZ J AC CD Motor (PWB Only)

OTHER SERVICE PART

UDSKA0004AFZZ J AZ CD Pickup Lens Cleaner

QT-CD250

A

B

C

D

E

F

G

H

1 2 3 4 5 6Figure 5 CD MECHANISM EXPLODED VIEW

– 5 –

701304

701

302

301

702

303

M702

703x2

305x2

SW702

M701

305

PWB-B

704

306

QT-CD250

A

B

C

D

E

F

G

H

1 2 3 4 5 6Figure 6 CABINET EXPLODED VIEW

– 6 –

Note: Only the unit and consumale parts are supplied as parts supply for the Tape mechanism.

CDMECHANISM

217

PWB-A3

602x3

237

206

205

606SW810

607x3

SO651

605x2

224

605x2

T651

229

225

227

226

604x4

SP202

230

605x3

201

218

SP201604x4

604x7601x2

PWB-A1

604x4

LCD801

PWB-A2

PWB-A4

PWB-A5

PWB-A6

606

232

235

235 231604

605x2

605x2

603x2

211212

213214

215216

223

TAPEMECHANISM

240(240-1,240-2, 240-3,240-4, 240-5240-6(M601),240-7(SW601))

238

610

604

233

MotorM601

REW/FFClutch

Flywheel

FF/REW Belt

Main Belt

BELT CONNECTION

236

222

PWB-A7

202

SiliconGrease

SiliconGrease

219

221

220

208

603x6

603x4

234

210

228

244

241x3

242

Q206

603243

239

245

207

209

203

204

204-2

204-1

204-3

209

QT-CD250

PACKING OF THE SET (FOR U.S.A ONLY)• Setting position of switches and knobs

Tape Mechanism Control STOP STATE

FUNCTION SELECTOR OFF/TAPE

: Not Replacement Item

Polyethylene Bag, Unit SSAKH0001SJZZ

Packing Case SPAKC0112SJZZ

VJ No. Label TLABZ0015SJZZ

Top Pad, Packing Case SPAKZ0013SJZZ

Bar Code Label TLABR1098SJZZ

Feature Label

AC PowerSupply Cord

Packing Add., Left/Right SPAKA0036SJZZ

FRONT

FRONT

Operation Manual

R

L

FRONT

Polyethylene Bag,AC Power Supply Cord SSAKK0002SJZZ

RemoteControl

No part of this publication may be reproduced,stored in a retrieval system, or transmitted inany form or by any means, electronic, mechanical,photocopying, recording, or otherwise, withoutprior written permission of the publisher.

COPYRIGHT © 2000 BY SHARP CORPORATION

ALL RIGHTS RESERVED.

A0003-????NS•HA•C

SHARP CORPORATIONCommunication Systems GroupQuality & Reliability Control CenterHigashihiroshima, Hiroshima 739-0192, Japan

Printed in Japan

SC • LAG