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Service manual de 41p. 2628Ko.

Text of SANYO CM29FS2_FB1B

FILE NO.

SERVICE MANUAL Colour Television

Model No. CM29FS2(Saudi/Kuwait)

Service Ref. No. CM29FS2-00

TV/AV?

TIMERx

1 4 7-/--

2 5 8 0CH

3 6 9P P

SOUNDi

SWAP

MENUPICTURES. SYS SURROUND

A. BBASS

CHTXT/TV

JXPSB

SpecificationsPower Source . . . . . . . .AC110-240V, 50/60Hz. Colour System . . . . . . . .PAL, SECAM, NTSC4.43, NTSC, PAL 60Hz Television System . . . . .B/G, D/KK, I, M/M Channel Coverage . . . . .VHF: E2-E12, R1-R12, K1-K9, J1-J12, A2-A13 UHF: 21-69, A14-A69, J13-J62 CATV: S1-S41, X, Y, Z, Z+1, Z+2 Video IF . . . . . . . . . . . . . .38.0 MHz Aerial Input Impedance . 75 Ext. Terminals Video inputs: Phono jack 2 (1.0Vp-p, impedance 75) S-Video Input 1 (Din 4 pin, Separate Y/C Signals Input) DVD Input: Component Video Jack-Y 1 (1.0Vp-p, impedance 75) Component Video Jack CB/CR 1 (0.7Vp-p, impedance 75) Audio inputs: Phono jack (R/L) 3 (436mVrms, impedance more than 40K) Video monitor output: Phono jack 1 (1.0Vp-p, 75) Audio monitor outputs: Phono jack(R/L) 1(436mVrms, Impedance less than 600) Headphone jack: Mini Stereo jack 1 Speaker . . . . . . . . . . . . . . Main speaker: 6 cm 12 cm 2 pcs. Tweeter: 5 cm 2 pcs. Sound Output . . . . . . . . . Main speaker: 7.5W + 7.5W (RMS) Dimensions . . . . . . . . . . . 803 (W) 578 (H) 418 (D)mm Weight . . . . . . . . . . . . . . . approx. 47.5 Kg Specifications subject to change without notice

Product Code: 111379453

Original Version Chassis Series: FB1-BGive complete SERVICE REF. NO. for parts order or servicing. It is shown on the rating plate at the cabinet back of the unit.

This T.V. receiver will not work properly in foreign countries where the television transmission system and power source differ from the design specifications. Refer to the specification table.

C8ZRL

REFERENCE NO.

SM3010120

ContentsSafety Notice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Chassis Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 IC Block Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6 CPU Port Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-8 Option Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Service Adjustments with Replacing Memory IC (IC802) . . . . . . . . . . 10-15 Dealer Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16 Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17-18 Purity and Convergence Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . 19-20 Mechanical Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Protection Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Cabinet Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Chassis Electrical Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23-31 Component Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32-34 Voltages and Waveforms Charts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35-36

Safety NoticeSAFETY PRECAUTIONS1: An isolation transformer should be connected in the power line between the receiver and the AC line when a service is performed on the primary of the converter transformer of the set. 2: Comply with all caution and safety-related notes provided on the cabinet back, inside the cabinet, on the chassis or the picture tube. 3: When replacing a chassis in the cabinet, always be certain that all the protective devices are installed properly, such as, control knobs, adjustment covers or shields, barriers, isolation resistor-capacitor networks etc.. Before returning any television to the customer, the service technician must be sure that it is completely safe to operate without danger of electrical shock.

X-RADIATION PRECAUTIONThe primary source of X-RADIATION in television receiver is the picture tube. The picture tube is specially constructed to limit X-RADIATION emissions. For continued X-RADIATION protection, the replacement tube must be the same type as the original including suffix letter. Excessive high voltage may produce potentially hazardous X - RADIATION. To avoid such hazards, the high voltage must be maintained within specified limit. Refer to this service manual, high voltage adjustment for specific high voltage limit. If high voltage exceeds specified limits, take necessary corrective action. Carefully follow the instructions for + B1 volt power supply adjustment, and high voltage check to maintain the high voltage within the specified limits.

PRODUCT SAFETY NOTICEProduct safety should be considered when a component replacement is made in any area of a receiver. Components indicated by mark in the parts list and the schematic diagram designate components in which safety can be of special significance. It is particularly recommended that only parts designated on the parts list in this manual be used for component replacement designated by mark . No deviations from resistance wattage or voltage ratings may be made for replacement items designated by mark .

-2-

6

Chassis Block Diagrams

IC1401 is not used

IC802 EEPROM

VIF/SIF

TUNER

Y/C VIDEO L/R

INPUT-1 INPUT-2

IC701 TRIPLE VIDEO OUTPUT AMP

Q901 CRT

VIDEO L/R

IC201 PROCESSOR

IC501 VERTICAL T431 H-DRIVE TRANS Q431 H-DRIVE PCC CIRCUIT Q432 H-OUT T471 FBT

L/R

INPUT-3

-3-

Y-IN Cb-IN Cr-IN

MONITOR OUT

VIDEO L/R

IC1401 WOOFER AMP. IC001 AUDIO AMP.

H-PHONE

SPEAKER

WOOFER

6KEY SW RC RECEIVER LED

System Control

IC Block Diagrams

IC001 AUDIO AMP.

10

SOUND MUTE

122 11 COLOUR SYSTEM OPTION INPUT

RESET INPUT (RESET=LOW)

13

IC1201 VIDEO SELECTOR

2

VIDEO SELECTOR (LOW=AV1, H=AV2)

12 IC201 QXXAVC534C7JAS QXXAVC534M

KEY SWITCH IN

KEY SWITCH

26 SCL SDA POWER ON/OFF (ON=HIGH, OFF=LOW)

IC3701 AUDIO CONTROL/ SURROUND 14 13

SECAM KILLER INPUT (HIGH=SECAM)

9BILINGUAL OUTPUT (LOW=S-1, HIGH=S-2)

2 1

4 5

A101 F/S TUNER

16 106 33

VIF-M OUTPUT (HIGH=NTSC, LOW=OTHER) RC SIGNAL IN (ACTIVE=HIGH)

PHOTO COUPLE

-4-

RC PRE-AMP.

99

ON-TIMER LED OUT (ON TIMER ON=Low) LED

112 6 7 98 SCL 99 SDA

OSC X80132.768KHz

CPU OSC IN CPU OSC OUT

18 17 127HORIZ. SYNC IN (ACTIVE=LOW) VERT. SYNC IN (ACTIVE=LOW)

DEFLECTION CIRCUIT

6

5POWER PROTECT IN (POWER ERROR=LOW)

IC802 MEMORY

POWER CIRCUIT etc.

IC201 < CPU/IF/Video/Chroma/Def.> QXXAVC534C7JAS

IC Block Diagrams

QSSO/AMOUT REFO39

SSIF

SCART/CINCH IN/OUT 12S

LS-OUT L R61

HP-OUT L62

R63

33

60

29

SIFIN/DVBIN30

SWITCH QSS SOUND IF AGC QSS MIXER AM DEMODULATOR

A/D CONVERTER SOUND PLL DEEMPHASIS ALL-STANDARD STEREO DECODER AM AUDIO SELECT ADC/DAC

DVBO/IFVO/ FMRO DVBO/FMRO AGCOUT

AUDIO CONTROL VOLUME TREBBLE/BASS FEATURES DACS I/OS RDS

43 44

31 24

VIFIN

25

VISION IF/AGC/AFC PLL DEMOD. SOUND TRAP GROUP DELAY VIDEO AMP.

PAL/SECAM/NTSC DECODER REF

BASE-BAND DELAY LINE

-PROCESSOR AND TELETEXT DECODER DIGITAL SIGNAL PROCESSING FEATURES

IFVO/SVO/ CVBSI YSYNC CVBS2/Y2 CVBS3/Y3 C2/C3 CVBS4/Y4 C4 CVBSO/PIP

48

SCAVEM ON TEXT BL R CON. G B CR85 86 87 83 84

YUV IN/OUT

-5-

73

55 58 59 51 52

C VIDEO SWITCH VIDEO IDENT. VIDEO FILTERS Y

DIGITAL 2H/4H COMB FILTER Y DELAY ADJ.

PEAKING SCAN VELOCITY MODULATION U/V DELAY

RGB CONTROL OSD/TEXT INSERT CONTR/BRIGHTN CCC BRI WHITE-P.ADJ.

RO GO BO BCLIN BLKIN

64

YUV H/V SYNC SEP. H.OSC. + PLL 2nd LOOP H-SHIFT H.DRIVE67

65

SVM H/V VERTICAL & EAST-WEST GEOMETRY YUV INTERFACE RGB/YPRPB INSERT SKIN TONE U/V TINT SATURATION SAT22 23 32 78 79 80 76

RGB MATRIX BLUE STRETCH BLACK STRETCH GAMMA CONTROL

Vo Uo Yo Yi Ui

Vi

HOUT

V-DRIVE EHTO EWD

R/PR BL

B/PB SWO1 BL B/PB G/Y R/PR (CVBSX/YX)(CX)

G/Y

IC Block DiagramsIC001 < Audio AMP.> TDA8947J/N3VCC1 3 VCC2 16

IN1+

860 k

+

+

1

OUT1+

IN2+

660 k

+

-

4

OUT2-

IN3+

9

+60 k

-

14

OUT3-

IN4+

12

+60 k

+

17

OUT4+

CIV

13Vcc

SHORT CIRCUIT AND TEMPERATURE PROTECTION

SVR

11

0.5Vcc

Vref SGND MODE1 7 10 STANDBY ALL MUTE ALL ON 1+2 MUTE 3+4 ON 3+4 2 GND1 15 GND2

TDA8947J

MODE2

5

IC501 < Vertical Output > LA78041Thermal Protection AMP +

Pump Up

1 INVERTING INPUT Vcc

2

3 GND PUMP UP OUT

4

5 Ver. OUTPUT

6 OUTPUT STAGE Vcc

7 NON INV. INPUT

-6-

CPU Port FunctionsPin No.1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33

Function NameVSSP2 VSSC4 VDDC4 VDDA3(3.3V) VREF_POS_LSL VREF_NEG_LSL+HPL

FunctionGround Ground Digital supply to SDACs (1.8V