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HCD-GRX20/RXD3AEP Model
UK ModelHCD-RXD3
E ModelAustralian Model
HCD-GRX20
SERVICE MANUAL
MINI Hi-Fi COMPONENT SYSTEM
MICROFILM
— Continued on next page —
SPECIFICATIONS
Model Name Using Similar Mechanism NEW
CD Mechanism Type CX3
Base Unit Type KSM-213ECM
Optical Pick-up Type KSS-213ECM/C2NP
Model Name Using Similar Mechanism NEW
Tape Transport Mechanism Type CWL-44-FR
CD
SECTION
TAPEDECK
SECTION
HCD-GRX20/RXD3 is the tuner, deck, CD andamplifier section in MHC-GRX20/RXD3.
PHOTO : HCD-RXD3
Amplifier sectionEuropean modelDIN power output (Rated) 40 W + 40 W
(6 Ω at 1 kHz, DIN)Continuous RMS power output (Reference)
50 W + 50 W(6 Ω at 1 kHz, 10%THD)
Music power output (Reference)100 W + 100 W(6 Ω at 1 kHz, 10%THD)
Other modelsThe following measured at AC 110, 220 V 60 Hz;DIN power output (Rated) 45 W + 45 W
(6 Ω at 1 kHz, DIN)Continuous RMS power output (Reference)
50 W + 50 W(6 Ω at 1 kHz, 10%THD)
The following measured at AC 120, 240 V 60 Hz;DIN power output (Rated) 50 W + 50 W
(6 Ω at 1 kHz, DIN)Continuous RMS power output (Reference)
60 W + 60 W(6 Ω at 1 kHz, 10%THD)
InputsMD IN (phono jack): voltage 450 mV,
impedance 47 kΩ
OutputsMD OUT (phono jacks):
voltage 250 mVimpedance 1 kΩ
PHONES (stereo phone jack):accepts headphones of 8Ω or more.
SPEAKER: accepts impedance of 6to 16 Ω
CD player sectionSystem Compact disc and digital
audio systemLaser Semiconductor laser
(λ = 780 nm)Emission duration:continuous
Laser output Max. 44.6µW**This output is the valuemeasured at a distance of200 mm from theobjective lens surface onthe Optical Pick-upBlock with 7 mmaperture.
Frequency response 20Hz – 20kHz (±0.5 dB)Wavelength 780 – 790 nm
DIGITAL OUT (OPTICAL)(Square optical connector jack, rear panel)Wavelength 600 nmOutput Level –18 dBm
Tape deck sectionRecording system 4-track 2-channel stereoFrequency response 40 – 13,000 Hz (±3 dB),
using Sony TYPE Icassette
Wow and flutter ±0.15% W. Peak(IEC)0.1% W. RMS(NAB)±0.2% W. Peak(DIN)
Tuner sectionFM stereo, FM/AM superheterodyne tuner
FM tunr sectionTuning range 87.5 – 108.0 MHzAntenna FM lead antennaAntenna terminals 75 Ω unbalancedIntermediate frequency 10.7 MHz
HCD-GRX20/RXD3
2121
6-4. SCHEMATIC DIAGRAM MAIN (1/3) SECTION • Refer to page 19 for Waveforms. • Refer to page 33 for IC Block Diagrams. • Refer to page 19 for Note on Schematic Diagram.
0.47µ
R136
R175
*
*
*
*
*
*
C186 0.001µ
mH
C167
L109 22µH 47
0.047µ
0.04
7µ
68
220
16V
R167
2.2
k
C107
mH0.047µ
C1000.001
MARK :
GRX20
C107
NO MOUNT NO MOUNT 220 5.6k
1k 1000.01µ
0.022(T)
560p(T) 10p
C135 C167 R105 R106
RXD3
25
23
22
23
25
E,AUS,SP,TW MODEL
HCD-GRX20/RXD3
2222
6-5. SCHEMATIC DIAGRAM MAIN (2/3) SECTION • Refer to page 19 for Waveforms. • Refer to page 33 for IC Block Diagrams. • Refer to page 19 for Note on Schematic Diagram.
10
Q552
Q551
502
Q252
0.0012
0.00120.018
22µ
0.018µ
23 21
HCD-GRX20/RXD3
2323
6-6. SCHEMATIC DIAGRAM MAIN (3/3) SECTION • Refer to page 33 for IC Block Diagrams. • Refer to page 19 for Note on Schematic Diagram.
47µ
D302UZ6.2B
R341470
R336680
R33347k
R358470
C3520.1
C3510.1
C3630.1
29
22 27
21
HCD-GRX20/RXD3
2525
6-8. SCHEMATIC DIAGRAM FRONT PANEL SECTION • Refer to page 19 for Waveforms. • Refer to page 30 for IC Pin Function. • Refer to page 19 for Note on Schematic Diagram.
R61
2
ROTARYENCODER
0.01
0.01
100k
EXCEPT E,SP,TW,MX,AR MODELS
EXCEPT MX MODEL
EXCEPT MX MODEL
AR,E,MX MODELS
C622
10µ
2SA733
0.1
0.0226.3V15
0
SPS-447-1
21 21
29
82040
HCD-GRX20/RXD3
2727
6-10. SCHEMATIC DIAGRAM AMPLIFIER SECTION • Refer to page 19 for Note on Schematic Diagram.
AC INC726100µ16V
UZ-1
2BSA
UZ-8
.2BS
A
UZ-27BSA-TA C7013300µ 50V :EXCEPT AUS MODEL3300µ 63V :AUS MODEL
C7023300µ 50V :EXCEPT AUS MODEL3300µ 63V :AUS MODEL
100µ 50V :EXCEPT AUS MODEL100µ 63V : AUS MODEL
100µ
50V
:EX
CEPT
AUS
MOD
EL10
0µ 6
3V:A
US M
ODEL
100µ
50V
:EX
CEPT
AUS
MOD
EL10
0µ 6
3V:A
US M
ODEL
* 100µ 50V :EXCEPT AUS MODEL100µ 63V : AUS MODEL
*
-070E
R44410
0.022 (CHASSIS)
J746
J475
GRX20MODEL
GRX20MODEL
RXD3MODEL
RXD3MODEL
T2A
AC IN
SW401
GRX20 : AR,E,SP,TW : 4.0A 250V
GRX20 : AR,E,SP,TW MODEL
GRX20 : MX : 4.0A 125VF702
AC VOLTAGE220 – 240 V
110 – 120 V
GRX20 : AUS, RXD3 MODELS
GRX20 : E,SP,TW,MX,AR MODELS
AC SWITCH
FUSE
F703T2AL250V
23
HCD-GRX20/RXD3
2929
6-12. SCHEMATIC DIAGRAM CD SECTION • Refer to page 19 for Waveforms. • Refer to page 31,32 for IC Block Diagrams. • Refer to page 19 for Note on Schematic Diagram.
25
23
HCD-GRX20/RXD3
3030
6-13. IC PIN FUNCTIONIC601 CXP82040-108Q(SYSTEM CONTROL) FRONT BOARD
Pin 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 to 31
32
33 to 36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
I/O
O
—
I
I
I
I
I
I
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
I
O
I
I
I
I
I
I
—
—
—
I
I
—
—
I
I
I
I
I
Description
FLD grid output.
Not used.
CXD2589Q SCOR input.
CXD2589Q COUNT input.
Power data input.
FOK input.
Remote signal input.
Data input.(DECK secton)
S/L output.(DECK secton)
STB output.(CD,DECK section)
CXA1992BR LOCK output.
CXD2589Q CLOCK output.
Mode switch input.
Not used.
Not used.
Function control output.
Not used.
LATCH output.
CXD2589Q XLAT output.
LC72131 CE output.
CXD2589Q SQCK output.
CXD2589Q SQSO output.
CXD2589Q DATA output.
S.CLOCK output.
S.DATA input.
S.DATA output.
FM Stereo input.
Key input 0 to 2.
Not used.
Not used.
AMS input.
RESET input.
X’TAL 10MHz
X’TAL 10MHz
Ground.
CXD2589Q SENS1 input.
CXD2589Q SENS2 input.
VDD.
VFDP.
Pick-up up switch signal input.
Pick-up down switch signal input.
Disc count switch signal input.
Turn Table switch signal input.
Tray open switch signal input.
Pin Name
2G,1G
NC
SCOR
COUNT
POWER DOWN IN
FOK
REMOTE IN
DATA IN
S/L
DECK,CD STB
LOCK
CLOCK
MODE SW IN
NC
CE
CTRL
LATCH B
LATCH A
XLAT
CE
SQCK
SQSO
DATA
S.CLOCK
S,DATA IN
S.DATA OUT
FM STEREO IN
KEY IN O to 2
VACS IN
SPEANA IN 1 to 4
ANS IN
RESET
EXTAL
XTAL
VSS
SENS1
SENS2
VDD
VFDP
PICK UP SW
PICK DOWN SW
DISC COUNT SW
TURN TABLE SW
TRAY O. SW
Pin No.
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80 to 85
86
87,88
89
90 to 100
I/O
I
I
I
I
I
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
—
O
—
O
Description
Tray close switch signal input.
Volume up signal input.
Volume down signal input.
Not used.
Not used.
Not used.
Not used.
Not used.
Not used.
Not used.
Not used.
Tuner Mute output.
System Mute output.
POWER switch output.
FLD segment output.
FLD segment output. Mode switch 1.
FLD segment output. Mode switch 2.
FLD segment output. Mode switch 3.
FLD segment output. Mode switch 4.
FLD segment output. Mode switch 5.
FLD segment output. Mode switch 6.
FLD segment output. Mode switch 7.
FLD segment output. Mode switch 8.
FLD segment output. Mode switch 9.
FLD segment output. Mode switch 10.
FLD segment output. Mode switch 11.
FLD segment output. Mode switch 12.
FLD segment output. Mode switch 13.
FLD segment output. Mode switch 14.
FLD segment output.
Not used.
FLD grid output.
VDD.
FLD grid output.
Pin Name
TRAY C. SW
VR UP
VR DN
CD ENCODER IN A
CD ENCODER IN B
SURROUND OUT
DBFB NOR&HI OUT
DBFB HI OUT
DOLBY NR OUT
2CH OUT
MD MUTE
TUNER MUTE OUT
SYSTEM MUTE OUT
POWER SW OUT
P1
P2(MODE SW 1)
P3(MODE SW 2)
P4(MODE SW 3)
P5(MODE SW 4)
P6(MODE SW 5)
P7(MODE SW 6)
P8(MODE SW 7)
P9(MODE SW 8)
P10(MODE SW 9)
P11(MODE SW 10)
P12(MODE SW 11)
P13(MODE SW 12)
P14(MODE SW 13)
P15(MODE SW 14)
P16 to 21
NC
15G,14G
VDD
13G to 3G
31
6-14. IC BLOCK DIAGRAMS
— CD DECORD SECTION —
IC701 CXA1992BR
FZC
VC
TDFCT
TZC
ATSC
TEI
LPFI
TEOVEE
EI
E
F
FEBIAS
SL P
SL M
SL O
ISET
VCC
XRSTDATAXLTCLKLOCK
SENS2SENS1C. OUT
VCC
DFCT
O
IFB1
– IF
B6BA
L1 –
BAL
4TO
G1 –
TOG
4
FS1
– FS
4
TG1
– TG
2
TM1
– TM
7
PS1
– PS
4
TGH
TGL
BALH
BALL
ATSC
DFCT
TM1
TG1
FS2
IFB1 – IFB6
VCC
VEE
VCC
VEE
VEE
PD 2I-V AMP
FOK
CC2
CC1
CBCPRF O
RF I
RFTC
PD2
PD1
PD LD RF M
TA O
TA M
FSET
TG2
TGU
SRCHFE
O
FEI
FDFC
T
FGD
FLB
FE O
FE M
TZC
FZC
FOL
FOH
MIR
R
LDON
LPCL
LPC
TGFL
DFCT
1
CC1
1 2 3 4 5 6 7 8 9 10
262524
2322212019
18
17
16
15
14
40
41
42
434445
46
47
48
49
50
51
52
39
PD 1I-V AMP
38
PDAMP
37
LDAMP
LASERPOWER
CONTROL
FOCUS BIASWINDOW
COMPARATOR
FOCUS ERRORAMP
F I-VAMP
E I-VAMP
TGFL TRACKING GAINWINDOW
COMPARATOR
E-F BALANCEWINDOW
COMPARATOR
ATSCWINDOW
COMPARATOR
TZCCOMPARATOR
TRACKING PHASECOMPENSATION
CENTERVOLTAGE
GENERATOR
FZCCOMPARATOR
FOCUS PHASECOMPENSATION CHARGE UP
FSET
ISET
IIC DATA REGISTER, INPUT SHIFT REGISTER,ADDRESS DECODER, SENSE SELECTOR,
OUTPUT DECODERTTL↓IIL
IIL↓
TTL
IIL↓
TTL
RF SUMMINGAMP FOCUS OK
COMPARATOR
PEAK/BOTTOMHOLD
PEAK/BOTTOMHOLD
DEFECTAMP
MIRRCOMPARATOR
36 34 31 30 29 28 2735 33 32
BAL1
– B
AL4
TM6
TM2
VCC
VEE
TM5
11 12 13
TG2
TM4
VCC
VEE
TM3
FS1
VCC
VEE
TOG1
– T
OG4
TM7
FS4DFCT
+–
+–
32
IC702 CXD2589Q
IC703 BA5936S
51
52
35
3837
36
312933
1011
18
13 14 15 16 17 57 58 7421 22 53 75 76 67 66 6559987 5 4612
3048
25 26 27 47 49 54 56 50 39 41 43 55 40 42 44 62
70
32
71
79
2324
28
ClockGenerator
OSC
EFMdemoduretor
ErrorCorrector
16KRAM
Asymmetry Corrector
DigitalPLL
ServkoAuto
Sequencer
Sub CodeProcessor
CPUInterface
D/AInterface
Serial InInterface
Over SamplingDigital Filter
3rd OrderNoise Shaper
TimingLogic
DigitalOUT
DigitalCLV
PWM PWM
XTSL
VPCO
VCKI
V16M
VCTL
XUGF
GFS
EMPH
WFC
K
C2PO
LECK
PCM
D
BCK
EMPH
ILE
CKI
PCM
DIBC
KISY
SM
TES1TEST
XRST
RMUTLMUT
XTAI
XTAO
AOUT
1
AIN1
LOUT
1
AOUT
2
AIN2
LOUT
2
DOUT
PWM
I
MDP
SQCK
SQSO
EXCK
SBSO
SCOR
XLON
SPOB
SPOA
CLOK
XTAL
DATA
SENS
CLKO
XLTO
DATO
CNINSEINFOK
CLTVPCOFILI
FILOXPCK
BIASASYOASYI
RF
C4M
32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
LEVEL SHIFT
LEVEL SHIFT
LEVEL SHIFT
LEVEL SHIFTLEVEL SHIFT
LEVEL SHIFT
MUTE
T.S.D
BIAS BIAS
BIAS
VCC
100
BIAS
BIAS VCC VCC
DETECTIONDF REG-OUT
CURRENT
100
100
10K
10KD D D D D D
DDDDDD
100
OUT1
–
OUT1
+
OUT2
–
OUT2
+
IN2
IN1
VCC
VCC
REG-
I
REG-
B
REG
OUT
IN3-
R
IN3-
F
OUT3
+
OUT3
–
GND
OUT4
–
OUT5
–
OUT4
+
OUT5
+
IN 5
IN 4
VCC
BIAS
IN
GND
GND
MUT
E IN
IN6-
R
IN6-
F
OUT6
+
OUT6
–
GND
13.3K
13.3K
13.3
K
33
— MAIN BOARD —
IC103 LC72131
PHASEDETECTOR
CHARGE PUMP
SWALLOW COUNTER1/16, 1/17 4BITS
12BITSPROGRAMMABLE
DRIVER
UNIVERSALCOUNTER
REFERENCEDIVIDER
POWERON
RESET1/2
CCBINTERFACE
1 2 3 4 5 6 7 8 9
16 15 14 13 12 11
10
17181920
XOUT
VSS
AOUT
AIN
PD VDD
FMIN
AMIN
XIN
DOCLDICE
IFIN
IO1
BO4
BO3
BO2
BO1
IO2
UNLOCKDETECTOR
DATA SHIFT REGISTER LATCH
IC201 TA8189N
CH2/A CH2/B NF VCC CG NF ALCMETAL
OUTPREOUT
TAPE A/TAPE B
RECOUT
RECIN
CH1/A CH1/B NF GND1 M/H NF
CH2CH2
ALC
M/N
CH1
GNDGND
CH1+–
+–
+– +
–
A/B
GNDMETALOUT
PREOUT
MIXOUT
RECOUT
RECIN
IREFVREF2
VREF1
24 23 22 21 20 19 18 17 16 15 14 13
1 2 3 4 5 6 7 8 9 10 11 12
34
IC252 74HC165
IC301 M62439SP
1 2 3 4 5 6 7 8
91016 15 14 13 12 11
CK E F G H QH
D C B A SERIALIN
CLOCKINHIBIT
SHIFT/LOAD
GND
QH
VCCOUTPUT
QHSERIALINPUTABCD
CLOCKINHIBIT
SHIFT/LOAD
CLOCK E F G H OUTPUTQH
PARALLEL INPUTS
PARALLEL INPUTS
— FRONT BOARD —
IC602 BU2092
1 2 3 4 5 6 7 8 9
1016 15 14 13 12 11
CONTROLCIRCUIT
12 BITSHIFT
REGISTER
12 BITSTORAGEREGISTER
OUTPUTBUFFER
(OPEN DRAIN)
1718
VDD
OE Q11
Q10
Q9 Q8 Q7 Q6 Q5Q4Q3Q2Q1Q0LC
K
CLOC
K
DATAVSS
20 19 18 17 16 15 14 13 12 11
1 2 3 4 5 6 7 8 9 10
CONTROLLOGIC
REC
OUT
SW
INPU
T SW
MON
AURA
L SW
MUT
E
VOLU
ME
CONT
ROL
Low
boo
st
High
boo
st
REC OUT2 INA2 INB2 INC2 IND2 TONEH2 TONEL2 OUT2 Vss CONT
VDDGNDOUT1TONEL1TONEH1IND1INC1INB1INA1REC OUT1