Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous radiation exposure.
Notes on chip component replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be
damaged by heat.
Flexible Circuit Board Repairing
• Keep the temperature of soldering iron around 270˚C
during repairing.
• Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).
• Be careful not to apply force on the conductor when soldering
or unsoldering.
SAFETY CHECK-OUT
After correcting the original service problem, perform the following safety checks before releasing the set to the customer:
Check the antenna terminals, metal trim, “metallized” knobs, screws,
and all other exposed metal parts for A C leakage . Check leakage as
described below.
LEAKAGE
The AC leakage from any exposed metal part to earth Ground and
from all exposed metal parts to any exposed metal part having a
return to chassis, must not exceed 0.5 mA (500 microampers). Leakage current can be measured by any one of three methods.
1. A commercial leakage tester, such as the Simpson 229 or RCA
WT-540A. Follow the manufacturers’ instructions to use these
instruments.
2. A battery-operated AC milliammeter. The Data Precision 245
digital multimeter is suitable for this job.
3. Measuring the voltage drop across a resistor by means of a V OM
or battery-operated AC voltmeter. The “limit” indication is 0.75
V, so analog meters must have an accurate low-voltage scale.
The Simpson 250 and Sanwa SH-63Trd are examples of a passive VOM that is suitable. Nearly all battery operated digital
multimeters that have a 2V AC range are suitable. (See Fig. A)
To Exposed Metal
Parts on Set
0.15µF
1.5k
Ω
Earth Ground
AC
voltmeter
(0.75V)
Fig. A. Using an AC voltmeter to check AC leakage.
Laser component in this product is capable of emitting radiation
exceeding the limit for Class 1.
This appliance is classified as
a CLASS 1 LASER product.
The CLASS 1 LASER PRODUCT MARKING is located on
the rear exterior.
This caution
label is located
inside the unit.
SAFETY-RELATED COMPONENT WARNING !!
COMPONENTS IDENTIFIED BY MARK ! OR DO TTED LINE
WITH MARK ! ON THE SCHEMATIC DIAGRAMS AND IN
THE PARTS LIST ARE CRITICAL TO SAFE OPERATION.
REPLACE THESE COMPONENTS WITH SONY PARTS
WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS
MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!!
LES COMPOSANTS IDENTIFIÉS P AR UNE MARQUE ! SUR
LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES
PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ DE
FONCTIONNEMENT. NE REMPLA CER CES COMPOSANTS
QUE PAR DES PIÈCES SONY DONT LES NUMÉROS
SONT DONNÉS DANS CE MANUEL OU DANS LES
SUPPLÉMENTS PUBLIÉS PAR SONY.
— 2 —
Page 3
SERVICING NOTE
TABLE OF CONTENTS
NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK
OR BASE UNIT
The laser diode in the optical pick-up block may suffer electrostatic
break-down because of the potential difference generated by the
charged electrostatic load, etc. on clothing and the human body.
During repair, pay attention to electrostatic break-down and also
use the procedure in the printed matter which is included in the
repair parts.
The flexible board is easily damaged and should be handled with
care.
NOTES ON LASER DIODE EMISSION CHECK
The laser beam on this model is concentrated so as to be focused on
the disc reflective surface by the objective lens in the optical pickup block. Therefore, when checking the laser diode emission, observe from more than 30 cm away from the objective lens.
2. Demagnetize the record/playback head with a head demagnetizer.
3. Do not use a magnetized screwdriver for the adjustments.
4. After the adjustments, apply suitable locking compound to the
parts adjusted.
5. The adjustments should be performed with the rated power supply voltage unless otherwise noted.
Torque Measurement
Torque
FWD
FWD
back tension
FF/REW
Torque meterMeter reading
CQ-102C
CQ-102C
CQ-201B
40 to 70 g • cm
(0.56 - 0.97 oz • inch)
1 to 5 g • cm
(0.01 - 0.07 oz • inch)
55 to 140 g • cm
(0.76 - 1.94 oz • inch)
DECK SECTION0 dB=0.775V
1. Demagnetize the record/playback head with a head damagnetizer.
2. Do not use a magnetized screwdriver for the adjustments.
3. After the adjustments, apply suitable locking compound to the
parts adjusted.
4. The adjustments should be performed with the rated power supply voltage unless otherwise noted.
5. The adjustments should be performed in the order given in this
service manual. (As a general rule, playback circuit adjustment
should be completed before performing recording circuit
adjustment.)
6. The adjustments should be performed for both L-CH and RCH.
Tape
P-4-A100
WS-48B
Record/Playback Head Azimuth Adjustment
(Deck A, Deck B)
Note: Perform this adjustments for both decks.
Procedure:
1. Mode : Playback
test tape
P-4-A100
(10kHz, –10dB)
Signal
10 kHz, –10 dB
3 kHz, 0 dB
SPEAKER
terminal
Used for
Azimuth Adjustment
Tape Speed Adjustment
level meter
set
+
–
— 9 —
Page 10
2. Turn the adjustment screw and check output peaks. If the peaks
do not match for L-CH and R-CH, turn the adjustment screw so
that outputs match within 2 dB of peak.
L-CH
peak
screw
position
R-CH
peak
output
level
within
2dB
L-CH
peak
R-CH
peak
within 2dB
screw
position
3. Mode: Playback
Tape Speed Adjustment (Deck A)
Procedure:
1. Mode: Playback
test tape
WS-48B
(3kHz, 0dB)
set
SPEAKER
terminal
frequency counter
+
–
2. Adjust the SFR201 so that the frequency counter reads 3,000
Hz ± 90 Hz.
Adjustment Location
[MAIN BOARD] — Component side —
test tape
P-4-A100
(10kHz, –10dB)
in phase
SPEAKER
terminal
(L-CH)
L
set
R
SPEAKER
terminal
(R-CH)
Waveform of oscilloscope
45˚
good
90˚
oscilloscope
135˚180˚
wrong
4. After the adjustments, apply suitable locking compound to the
parts adjusted.
Adjustment Location:
CN205
CN301
SFR201
Tape Speed
Sample Value of Wow and flutter
W. RMS (JIS) within 0.3%
(test tape: WS-48B)
Adjustment screws
REC/PB head (deck A)
or PB head (deck B)
— 10 —
Page 11
TUNER SECTION0 dB=1µV
Note:As a FM front end (U1) is difficult to repair if faulty, replace
it with new one. (AEP, UK models)
AM T uning Voltage Adjustment
DC voltmeter
Tuner board
TP2
(VT)
Procedure:
1. Set the reception frequency of the unit to 530 kHz (10 kHz step)
or 531 kHz (9 kHz step).
2. Adjust L105 for 1.2 ± 0.05 V reading on the DC voltmeter.
3. Set the reception frequency of the unit to 1,710 kHz (10 kHz
step) or 1602 kHz (9 kHz step).
4. Confirm that the voltage reading on the DC voltmeter is within
8.0 ± 0.5 V.
Adjustment Location: TUNER board
+
–
AM T racking Adjustment
loop antenna
(Supplied accessories)
AM RF SSG
30% amplitude
modulation by
400Hz signal
loop antenna
60cm
Field strength dB (µV/m) = SSG output level dB (µV/m) –26dB.
Procedure:
1. Tune the set to 600 kHz (10 kHz step) or 603 kHz (9 kHz step).
2. Set the output of AM RF SSG so that the input level of the set
will become 60 dB (µV/m).
3. Adjust L104 so that when the waveform on the oscilloscope is
maximum, no noise appears.
4. Tune the set to 1,400 kHz (10 kHz step) or 1404 kHz (9 kHz
step).
FM T uning Volta ge Adjustment
(EXCEPT AEP, UK models)
DC voltmeter
Tuner board
TP2
(VT)
+
–
set
AM antenna
terminal (JK101)
5. Adjust TC102 so that when the waveform on the oscilloscope is
maximum, no noise appears.
• Repeat the procedures in each adjustment several times, and the
tracking adjustment should be finally done by the trimmer
capacitors.
Adjustment Location: TUNER board
Procedure :
1. Set the reception frequency of the unit to 87.5 MHz.
2. Adjust L103 f or 1.2 ± 0.05V reading on the DC voltmeter.
3. Set the reception frequency of the unit to 108 MHz.
4. Confirm that the voltage reading on the DC voltmeter is within
7.8 ± 0.5V.
Adjustment Location: TUNER board
— 11 —
Page 12
FM T racking Adjustment
(EXCEPT AEP, UK models)
FM RF SSG
oscilloscope
FM Tuned Level Adjustment
FM RF SSG
75
Ω
coaxial
set
Ω
open)
SPEAKER terminal
FM ANTENNA terminal (JK101)
Carrier frequency : 90 MHz, 106 MHz
Modulation: AUDIO 1kHz, 75kHz deviation (100%)
Output level: 20 dB (at 75
+
–
Procedure:
1. Tune the set to 90 MHz.
2. Adjust L102 so that when the waveform on the oscilloscope is
maximum, no noise appears.
3. Tune the set to 106 MHz.
4. Adjust TC101 so that when the waveform on the oscilloscope is
maximum, no noise appears.
• Repeat the procedures in each adjustment several times, and the
tracking adjustment should be finally done by the trimmer
capacitors.
1. Supply a 28 dB 98 MHz signal from the ANTENNA terminal.
2. Tune the set to 98 MHz.
3. Adjust SFR101 to the point (moment) when the TUNED indicator will change from going off to going on.
Adjustment Location: TUNER board
EXCEPT AEP, UK models
[TUNER BOARD] — Component side —
FM T uning Voltage
JK101
TP2 (VT)
L104
TC102
L103
TC101
L102
L105
AM T rac king
FM T r acking
AM T uning Voltage
FM T uned Lev el
SFR101
CN101
AEP, UK models
[TUNER BOARD] — Component side —
FM T uned Level
JK101
L104
U1
TP2 (VT)
AM T rac king
TC102
L105
AM T uning Voltage
SFR101
T101
— 12 —
Page 13
CD SECTION
Note:
1. CD Block is basically constructed to operate without adjustment.
Therefore, check each item in order given.
2. Use YEDS-18 disc (3-702-101-01) unless otherwise indicated.
3. Use an oscilloscope with more than 10MΩ impedance.
4. Clean the object lens by an applicator with neutral detergent
when the signal level is low than specified value with the following checks.
5. Adjust the focus bias adjustment when optical block is replaced.
Focus Bias Adjustment
CD DECODER
board
CN12
FEO
VC
Procedure:
1. Connect DC voltmeter to test point CN12 (FEO), (VC) on CD
DECODER board.
2. Turned Power switch on.
3. Put disc (YEDS-18) in and stop.
4. Adjust VR01 so that the DC voitmeter reading is 0 ± 20 mV.
Adjustment Location: CD DECODER board
Focus Gain Adjustment (VR02)
This gain has a margin, so even if it is slightly off.
There is no problem.
Therfore, do not perform this adjusment.
Please note that it should be fixed to mechanical center position
when you moved and do not know original position.
DC voltmeter
+
–
RF Level Check
CD DECODER
board
TP (RF)
CN12 (VC)
Procedure :
1. Connect oscilloscope to test point TP (RF) on CD DECODER
board.
2. Turned Power switch on.
3. Put disc (YEDS-18) in and playback.
4. Confirm that oscilloscope waveform is clear and check RF signal level is correct or not.
Note: Clear RF signal waveform means that the shape “◊” can be
clearly distinguished at the center of the waveform.
oscilloscope
VOLT/DIV: 200 mV
TIME/DIV: 500 nS
+0.3
level: 1.0 Vp-p
–0.2
Adjustment Location: CD DECODER board
5-1. CIRCUIT BOARDS LOCATION
DISC LED board
SENSOR board
PANEL board
SW (D) board
SW (B) board
SECTION 5
DIAGRAMS
MOTOR (6P) (S) board
MAIN board
AC SUPPLY board
(EXCEPT AEP, UK)
MOTOR board
TUNER board
VOLT. SELECT
board
AC SUPPLY board
(AEP, UK)
Adjustment Location
[CD DECODER BOARD] — Component side —
CN12
IC03
VC
FEO
IC01
Focus Bias
Focus Gain
VR01
R07
VR02
RF Level
— 13 —
SW (C) board
SW (A) board
CD DECODER board
R/P SW board
— 14 —
Page 14
HCD-C20/G202
5-2. BLOCK DIAGRAMS
— TUNER SECTION — (US, CND, E, MY, SP, MX, AUS MODELS)
JK101
ANTENNA
FM
75 OHM
AM
TP2
AM TUNING
VOLTAGE
FM TUNING
VOLTAGE
09
L101
D106
G
L104
TC101,L102
FM TRACKING
TP2VT
L104,TC102
AM TRACKING
RF INIF OUT
16
MAX INOSC
TC102
• R CH is omitted
• Signal path
: FM
: AM
• Abbreviation
CND : Canadian model.
MY : Malaysia model.
SP : Singapore model.
MX : Mexican model.
AUS : Australian model.
FM FRONT
IC101
38
D107
END
L.P.F
Q107,108
211 24
PD 1
T101
L103
FM TUNING
VOLTAGE
X201
7.2MHz
X IN
L103
FM OSC
AMP
Q102
AM RF
AMP
Q106
B+
X OUT
CF101
10.7MHz
Q105
17
FM B+
L OUT
14
ST IND
DI
CLK
CE
MUTE
STEREO
DO
TU L
A
MAIN
SECTION
(Page 23)
FM/AM MPX
IC102
CF102
FM IF
10.7MHz
AMP
Q101
AM TUNING
VOLTAGE
L105
B+
19
FM IN
PLL
IC201
SFR101
FM
TUNED
LEVEL
1 FM IF
23
OSC
22
AFC
21
AM RF
24
OSC/FMSD
AM/FM
TU LED
6 10
AGC
CONT.
Q109
7 15
18
AM IN
SD/IN
16
L CTR
H CTR
FM DET
MPX VCO
MPX IN
AM/FM
ST IND
AM MIX
PH DET
SMET
201112 13
12 13
SD
AM/FM
PH DET
14
8
17
16
18
7
2
PL DET
ST/MONO
CF104
10.4MHz
CF105
19kHz
T102
AM IF
4
IF
TP1
G
CF103
450kHz
5
DO
3 4
2
DI
CE
CLK
— 15 —
— 16 —
Page 15
— TUNER SECTION — (AEP, UK models)
JK101
ANTENNA
FM
75 OHM
AM
L101
TP2
AM TUNING
VOLTAGE
L104
• R CH is omitted
• Signal path
: FM
: AM
RF INIF OUT
17
FM FRONT
VTOSC
58
TP2
TC102
L104,TC102
AM TRACKING
U1
END
L.P.F
Q107,108
211 24
PD 1
X201
7.2MHz
X IN
AM RF
B+
X OUT
AMP
Q106
CF101
10.7MHz
Q105
17
FM B+
HCD-C20/G202
L OUT
14
FM/AM MPX
IC102
CF104
PH DET
14
8
17
16
18
7
2
PL DET
ST/MONO
10.7MHz
CF105
19kHz
T101
FTZ. FILTER
36
1
T102
5
DO
CF102
FM IF
10.7MHz
AMP
Q101
AM TUNING
VOLTAGE
L105
B+
19
FM IN
PLL
IC201
SFR101
FM
TUNED
LEVEL
1 FM IF
23
OSC
22
AFC
21
AM RF
24
OSC/FMSD
AM/FM
TU LED
6 10
7 15
18
AM IN
SD/IN
16
L CTR
H CTR
FM DET
MPX VCO
MPX IN
AM/FM
ST IND
AM MIX
PH DET
SMET
201112 13
12 13
SD
AM/FM
TP1
AM IF
IF
CF103
450kHz
R OUT
4
G
3 4
2
DI
CE
CLK
TU L
R CH
15
ST IND
A
DI
MAIN
CLK
SECTION
CE
(Page 25)
MUTE
STEREO
DO
09
— 17 —— 18 —
Page 16
HCD-C20/G202
— CD SECTION —
OPTICAL PICK-UP BLOCK
DETECTOR
A
C
B
D
E
F
7
B+
LASER DIODE
PD
TRACKING
2-AXIS
DEVICE
• R CH is omitted
• Signal path
: CD
COIL
FOCUS
COIL
DIGITAL SIGNAL PROCESSOR, D/A CONVERTER, DIGITAL FILTER
RF
4
1
2
5
6
10
LD
FOCUS
TRACKING
RF LEVEL
MOTOR
SPINDLE
MOTOR
M102
SLED
M101
APC
Q01
LD ON
Q02
CN12
M
M
2
1
09
VC
FOCUS
TRACKING
VR01
3536PD1
PD2
E
39
F
38
LD
33
PD
34
48
VC
••
45
ATSC
FEO
1
FEBIAS
37
VO3(+)
18
VO3(-)
17
VO4(+)
15
VO4(-)
16
VO2(+)
12
VO2(-)
•
11
VO1(+)
13
VO1(-)
•
14
FOCUS/TRACKING
SERVO, RF AMP
IC01 (1/2)
TRACKING
COIL
DRIVE
FOCUS
COIL DRIVE
FOCUS/TRACKING
COIL DRIVE,
SPINDLE/SLED
MOTOR DRIVE
IC03
SLED MOTOR
DRIVE
SPINDLE
MOTOR
DRIVE
DATA
SENS
C. OUT
XRST
FE M
TA M
CLK
FOK
FE O
TA O
XLT
VIN3
VIN4
VIN2
VIN1
31RF 0
CN2
42TEO
VC
16
15
24
VR02
SLED SERVO
IC01 (2/2)
SL O
SL M
OP
OUT
FOCUS
GAIN
SL P
14
23IN -
9MUTE
EI
40
19
20
21
24
23
25
22
6
7
13
12
25
27
6
4
DIGITAL
36
PLL
DEMODULATOR
SUB CODE
PROCESSOR
CLKO
17
XLTO
16
DATO
15
SERVO
AUTO
SEQUENCER
SEIN
13
CNIN
14
FOK
23
XLON
22
8
XRST
MDP
25
M103
TURN
TABLE
MOTOR
M104
TRAY
MOTOR
CPU
INTERFACE
M
M
EFM
IC04
DIGITAL
CLV
TURN TABLE
MOTOR DRIVE
Q10,11,14,15
TURN TABLE
MOTOR DRIVE
CONTROL
Q13
TRAY MOTOR
DRIVER
Q06 - Q09
D/A
INTERFACE
S05
LIMIT
SWITCH
CLOCK
GENERATOR
SPOA
18
6
7
11
8
9
4
33.8688MHz
T.T+
T.T-
DOWN
TRAY +
TRAY -
XRST
DIGITAL
FILTER
1BIT
DAC
XTA0
74 73
XLT01
+
XTA1
MUTE
6
2
B.BOOST
MUTE
CONTROL
TRAY/TABLE
MOTOR
DRIVER,
REG CONTROL
IC02
NLPWM
LPWM
DATA
SQCK
CLOK
SQSO
SCOR
SENS
XLAT
DATA I
CLOK
MIX AMP
70
69
9
5
11
4
1
7
IC05
+
-
CD L
DATA
SQCK
SQSO
SCOR
SENS
C
CONTROL
MUTE
MAIN
SECTION
(Page 23,25)
E
POWER
SECTION
(Page 27,28)
10
5
13
14
15
STB
3
10
UP
S01
OPTICAL PICK-UP
UP DOWN
UP/DOWN DET
XLAT
COUNT
FOK
DI
CLK
STB
B. BOOST
UP
DOWN
— 19 —
— 20 —
Page 17
— DECK SECTION —
TAPE B
HP901
PB HEAD
TAPE A
HRP901
REC/PB
HEAD
HE901
ERASE
HEAD
R CH
PLAY/REC
CONTROL
Q203,205
PLAY/REC
CONTROL
DRIVE
Q207
R CH
D208
R CH
R CH
BIAS OSC COIL
PLAY/REC
CONTROL
Q201
L201
D209
HCD-C20/G202
NF
3
CH1/A
1
CH1/B
2
A/B
Q211
BIAS
OSC
Q218
-
+
REC/PLAY
EQ AMP
IC201
9
REC SWITCH
DRIVE
Q217
GROUND
SWITCH
Q220
PB L
REC L
B
MAIN
SECTION
(Page 23,25)
5
PRE
OUT
TAPE A/TAPE B
19
REC
+
OUT
-
REC IN
11
NF
10
D205
MUTE
Q209
MUTE
SWITCH
Q216
Q219
• R CH is omitted
• Signal path
: PB (DECK A)
TAPE A/B
SWITCH
Q213
TAPE A
SWITCH
Q214
D203
D212
D211
D213
SW201
REC/PLAY
SWITCH
PLAY
REC
D202
+
D201
: PB (DECK B)
: REC (DECK A)
B +
D207D206
SFR201
TAPE SPEED
S201
A DECK
S202
B DECK
S203
PLAY
M
M901
REEL/CAPSTAN
MOTOR
B +
09
CD SYNC
— 21 —— 22 —
Page 18
HCD-C20/G202
— MAIN SECTION — (US, CND, E, MY, SP, MX, AUS models)
— 23 —
— 24 —
Page 19
— MAIN SECTION — (AEP, UK models)
HCD-C20/G202
A
TUNER
SECTION
(Page 18)
B
DECK
SECTION
(Page 22)
C
CD
SECTION
(Page 20)
TU L
STEREO
MUTE
ST IND
REC L
PB L
CD SYNC
CD L
B. BOOST
SQSO
SCOR
SENS
XLAT
COUNT
DOWN
SQCK
DATA
INPUT SELECTOR
IC303
LT
TUNED
KI 4
CONTROL
CLDICE
1514
DI
CLK
69 - 80 • 1 - 12
OUT
16
CE
S00
LCD DISPLAY
64 65 66
LCD601
1
1
2
3
X1
LED DRIVER
IC603
DISC1
DATA
CLK
DISC3
LATCH
RST
IC601
CONTROL RECEIVER
LINE AMP
Q305
42
2
REMOTE
RM601
17
12
6
REM. IN
D617
BASS
BOOST
Q319
BASS
BOOST
SWITCH
Q307
MUTE
Q303
D319, 318
LED602 - LED603
B+
DISC 1 - 3
3
2
IN
LVR
ELECTRICAL
VOLUME
LVR
OUT
LED601
DBFB
LED
DRIVER
Q605
MUTE
Q401
CE
DI
CLK
CE
DO
CLK
COM 0
COM 3
S23
21 - 24
DI
CLK
17
LATCH OUT
SYSTEM CONTROLLER, LCD DRIVER
X2
59 58
X601
4.19MHz
L2
11
L4
9
L1
12
L3
10
DI
CLK
CE
DO
Q309
BUFFER
TUNED
SWITCH
Q311
DI
CLK
SYS.REC IN
KO C
Y0
Y5
•
Y7
15
10
•
7
DI1
19
FM ST IN
TU MUTE OUT
29 - 32 • 34
MATRIX
16
KI 0
KEY
3663 61
41 SQSO
43
SCOR
44
SENS
XLAT
60
38
FOK
STB
UP
COUNT
37
FOK
67
STB
62
DI2
45
GFS
39
SQCK/MODE SW IN
40
DATA
5G2
KO A
13 - 15
1 - 3
A - C
SELECTOR
IC60209
POWER AMP
1511
MUTE SWITCH
MUTE
Q604
IC301
POWER ON
Q313
MUTE
SWITCH
Q603
SYSTEM MUTE OUT
TRAY OPEN SW
TRAY CLOSE SW
49 48
S02
OPEN/CLOSE
DET
RELAY
DRIVE
Q312
POWER OUT
DISC COUNT SW
4647
S03
TURN TABLE
POSITION DET
R-CH
B+
POWER ON
DET
Q601
POWER DOWN IN
TURN TABLE SW
S04
TURN TABLE
OPERATION DET
B+
RESET
Q312
68555352
RESET
P.MUTE
P. ON/OFF
• R CH is omitted.
• Signal path
: FM
: PB
: REC
: CD
JK302
PHONES
JK301
SPEAKER
D
POWER
SECTION
(Page 28)
— 25 —— 26 —
Page 20
HCD-C20/G202
— POWER SECTION — (US, CND, E, MY, SP, MX, AUS models)
+5V REG
Q05
REG CONTROL
Q04
+5V REG
Q12
+5.6V REG
Q704
+7.5V REG
Q703
+11.2V REG
Q702
+12V REG
+12V REG
REG CONTROL
Q706,707
E
CD
SECTION
(Page 20)
+5V
MUTE
CONTROL
+5V
+5.6V
+11.2V
+12V
+12V
PWN
D
MAIN
SECTION
(Page 24)
09
P.ON
+33V
-10.5V
-33V
-10.5V REG
D741
RECT
Q709
RECT
D701
Q701
Q705
TRANSFORMER
RECT
Q707,708
• Abbreviation
CND : Canadian model.
MY : Malaysia model.
SP : Singapore model.
MX : Mexican model.
AUS : Australian model.
PT302
POWER
SELECTOR
E, MY, SP
VOLTAGE
SW801
— POWER SECTION — (AEP, UK models)
PT302
POWER
TRANSFORMER
+10.5V
AC
IN
E
CONTROL
CD
SECTION
+7.5V
MUTE
+10.5V REG
Q321
+7.5V REG
Q316
+5V
+5V
+5V REG
Q301
+5V REG
Q05
REG CONTROL
Q04
(Page 20)
P.ON/OFF
D
MAIN
SECTION
+12V
+12V REG
Q317
(Page 26)
P.MUTE
+51.5V09
+11.5V REG
Q315
643
RY301
RELAY
521
RECT
D306
RECT
D310-D313
AC
IN
— 27 —
— 28 —
Page 21
— 29 —
FDFCT
FE O
FE M
SRCH
FSET
TA M
— CD SECTION —
IC01 CXA1782BQ
5-3. IC BLOCK DIAGRAMS
48VC
47TDFCT
46TZC
45ATSC
44TEI
43LPFI
• WINDOW COMP
–
+
1
FEO
2
FEI
3
FS4
4
FGD
5
FLB
6
7
8
9
TGU
10
TG2
11
• F SET
12
ATSC
DFCT
DFCT
TZC COMP
–
TM1
• FCS PHASE
COMPENSATION
+
–
FS2
FS1
TG2
TM7
TM3
TM2
+
–
14 SL P
13
TA O
TM4
15 SL M
TOG1
TOG2
TOG3
42TEO
41VEE
+
–
+
HPF COMPLPF COMP
TG1
• PHASE
COMPENSATION
TM5
TM6
BAL1
BAL2
BAL3
+
• TRACKING
TE AMP
–
40EI
E IV AMP
+
–
–
+
–
+
39E
+
–
FZC COMP
F IV AMP
+
BAL1-3
TOG1-3FS1-4TG1-2TM1-7PS1-4
–
38F
+
–
FE AMP
IIL
• OUTPUT DECODER
37FE BIAS
RF IV AMP2
+
–
TTL
• IIL DATA RESISTOR• INPUT SHIFT RESISTOR
• ADDRESS DECODER
36
PHD2
3534
PHD1
RF IV AMP1
+
+
–
–
FOK
+
–
APC
LEVELS
–
+
–
+
–
+
–
+
–
+
+
–
DFCT
MIRR
–
–
+
–
+
+
+
–
+
PHD
33
LD
32
RF M
31
RF O
30
RF I
29
CP
28
CB
–
27
• ISET
–
+
16 SL 0
17 ISET
18 VCC
19 CLK
TTL
IIL
21 DATA
20 XLT
22 XRST
TTL
23 C. OUT
IIL
24 SENS
CC1
26
CC2
25
FOK
— 30 —
BIAS IN
IN1B
IN1A
IN2B
IN2A
MUTE
OUT2A
OUT2B
OUT1A
IC03 BA5941FP
12
VCC
3
+
+
–
LEVEL SHIFT
–
+
LEVEL SHIFT
LEVEL SHIFT
–
4
5
6
+
7
GND
8
GND
MUTE
9
VccVcc
10
VCC
11
1213
–
–
+
+
–
–
+
LEVEL SHIFT
28
IN4B
27
IN4A
26
IN3B
25
IN3A
24
OP OUT
23
OP IN (–)
–
+
22
OP IN (+)
2120
GND
NC
NC
Vcc
19
VCC
18
–
OUT3A
+
+
OUT3B
–
1617
–
OUT4A
+
T.T.SW
8
9
SENSOR
M+
POSI.2
7
LATCHLATCH
10
LOADING
M-
POSI.1
6
11
LOADING
T.T(M)
5
DRIVER
12
DATA 0
XRST
4
13
DATA I
LATCH
CONTROL
3
C
T
14
CLOK
MUTE
2
SERIAL I/O
CONTROL
15
STB
DRIVER
GND
1
16
VDD
IC02 TC9173P
OUT1B
+
14
–
+
15
OUT4B
–
Page 22
— 31 —
— TUNER SECTION —
BYPAS
MIX IN
IF
REG
OSCBUF
123456789
IC101 LA1186N
MIX
RF
VREF
LOCK
AVSS1
CLTV
AVDD1
ASY1
ASY0
ASYE
RF IN
GND
GND
OSC
VCC
AFC
MDP
MDS
TEST
BIAS
MON
24
25 26 27 28 29 30 31 3233 34 35 36 37 38 39 40
FIL0
FIL1
PCO
VDD
RF
41
WDCK
(LD ON)
XLON
FOK
23
DIGITAL
PLL
ASYMMETRY
CORRECTOR
42
43
LRCK1
LRCK
(CLOSE SW)
XTSL
44
PCMD
(OPEN SW)
SPOB
SPOC
19
202221
GENERATOR
CLOCK
46
45
BCK
PCMD1
(PIC SW)
SPOA
18
47
BCK1
CLKO
17
1BIT DAC
+
3
48
GTOP
XLTO
16
3
FILTER
4
49
XUGF
DIGITAL
DATO
15
50
XPCK
CNIN
SEIN
13
14
SERVO AUTO
SEQUENCER
11
DIGITAL
CLV
52
51
RFCK
GFS
MUTE
SQSO
SQCK
SENS
XRST
DATA
CLOK
XLAT
VSS
10
11
12
INTERFACE
CPU
INTERFACE
D / A
55
54
53
XPOF
C2PO
VSS
7
8
9
13
1
RAM
16K
CORRECTOR
ERROR
58
57
56
MNT0
MNT1
MNT3
5
6
PROCESSOR
SUB CODE
DEMODULATOR
EFM
OUT
60
59
C4M
FSTT
4
61
DOUT
DIGITAL
EXCK
3
62
EMPH
SBSO
2
10
63
EMPHI
SCOR
1
64
WFCK
IC04 CXD2508Q
80 79 78 7776 75 74 7372 71 70 69 68 67 66 65
DTS3
DTS2
RPWM
NRPWM
AVSS2
AVSS3
XTA0
XTA1
AVDD3
AVDD2
NLPWM
LPWM
VDD
DTS1
ZEROR
ZEROL
CH1/A CH1/B NFGND1 M/HNF
123456789101112
OUT
OUT
PRE
OUT
MIX
OUT
REC
REC
IN
GNDMETAL
— 32 —
ALC
AM
IC102 LA1831
OSC/FMSD
24211815
OSC
23
AFC AM RF SMET AM HPF AF DET MPX VCO MPX IN R OUT
22191613
2017
L OUT
14
PL DET
OUT0
OUT1
OUT2
OUT3
IC201 TA8189N
— MAIN SECTION —
CH2/A CH2/B NFVCC CGNFALC
24232221 20191817
+
–
CH1
VREF2
M/N
CH1
+
–
GNDGND
VREF1
IREF
ALC
+
–
CH2
A/B
CH2
+
–
METAL
OUT
OUT
PRE
/TAPE B
TAPE A
OUT
REC
16
1514 13
REC
IN
101112
13
OUT 4
9
14
OUT 5
IN1
8
IN0
7
SHIFT REGISTER
LATCH
UNIVERSAL
COUNTER
15
LCTR
SYC
6
DO
5
16
HCTR
CEDICL
4
2
3
PROGRAMMABLE DIVIDER
12 BIT
18
17
AM IN
OUT 6
SWALLOW COUNTER
1/16 . 1/17 BIT
1 / 2
19
20
VDD
FM IN
XIN
1
REFERENCE
DIVIDER
PHASE DETECTOR
CHARGE PUMP
21
VSS
PD2
PD1
IC201 LC7218
242322
X OUT
FM IF
AM MIX REGAM IFGND TU LED ST IND FM DET VCC AM/FM
PH DET
PH DET
FM IFREGGND
1
3
4710
6912258
VCC
11
LEVEL
DET
FM DET
S-CURVE
IF BUFE
AM/FM
COMP
TUNING
DRIVE
AM
FM
AM/FM
SW
VCO
PHASE
DET
FF
PILOT
DET
AM DETAM IF
STEREO DRIVE
TRIG
BUFFER
AGC
STEREO SW
OSC
AM
MIX
AM
RF AMP
MUTEDECORDER
Page 23
IC303, 401 LC75392
IC501 STK405-070A
LVROUT
LVRIN
LTOUT
LTCOM
LT4
LT3
LT2
LT1
VDD
1
–
+
2
3
4
5
6
7
8
L4
9
L3
10
L2
11
L1
12
13
CL
14
15
DI
+–+
–
LATCH
DECODER
SHIFT
REGISTER
CONTROL
+
–
30
RVROUT
–
+
29
RVRIN
28
RTOUT
2
1
36
27
RTCOM
ch.1 OUT
RT4
26
25
RT3
RT2
24
RT1
23
R4
22
R3
21
R2
20
R1
19
VREF
18
VSS
17
16
CE
ch.2 OUT
+
ch.2
–
+
ch.1
–
5491281113
ch.1 –VCC
ch.1 +VCC
ch.2 +VCC
7
Pre. +VCC
ch.2 –VCC
10
GND
Pre. –VCC
ch.1 +IN
ch.1 –IN
ch.2 –IN
ch.2 +IN
GND
14
GND
IC502 uPC1237HA
OVER
LOAD DET
OFFSET DET
LATCH
AUTORESET
AC OFF
DET
1 23478
F/F
6
5
— PANEL SECTION —
IC603 BU2114
SIN
LATCH
SOUT
RST
GND
GND
1
CK
2
3
4
5
EN
6
7
8
ENABLE
SHIFT
REGISTER
LATCH
CC
V
MUTE
ON
CC
V
18
VDD
17
O1
16
O2
15
O3
14
O4
13
O5
12
O6
O7
11
10
O8
9
GND
— 33 —
Page 24
Page 25
Page 26
Page 27
Page 28
Page 29
Page 30
Page 31
Page 32
Page 33
Page 34
Page 35
Page 36
• Abbreviation
LCD: Liquid Crystal Display
55
56
POWER DOWN IN
OPEN
52
53
54
SYSTEM MUTE OUT
POWER OUT
VDD
49
50
51
TRAY CLOSE SW
VR UP
VR DOWN
46
47
48
DISC COUNT SW
TURN TABLE SW
TRAY OPEN SW
45
GFS
44
SENS
43
SCOR
41
42
SQSO
REM. IN
37
38
39
40
FOK
COUNT
SQCK/MODE SW IN
DATA
34
35
36
KI 4
KI 5
SYC. REC IN
33
VSS
32
KI 3
31
KI 2
30
KI 1
29
KI 0
21 to 24
26 to 28
25
COM 1 to COM 3
BIAS
VLC 0 to VLC 2
18
19
20
TAPE REC OUT
TU MUTE OUT
—
16
17
TUNED
LATCH OUT
15
KO C
14
KO B
13
KO A
Pin No.Pin Name
1 to 12
S12 to S23
5-16. IC PIN FUNCTION
• IC601 System Controller, LCD driver (µPD753017AGC)
— 87 —
—
I
Power down detect input “L” : active
Not used
O
O
Power ON/OFF control signal output “H” : OFF, “L” : ON
+5V power supply
I
Disc tray close detection signal input
Volume encoder signal input and volume motor control signal output (Not used)
System mute control signal output “H” : ON
I/O
I/O
—
I/O
O
I
I
I
I
I
I
I
I
SQCK/CLOK/MODE SW signal input/output
Serial data output
Serial data input from CXD2508Q
Remote control signal input “L” : active
SCOR signal input from CXD2508Q
SENS signal input from CXD2508Q
Optical pick-up down detection signal input “L” : down
Detection signal input of turn table position
Detection signal input of turn table operation
Disc tray open detection signal input
—
I
I
I
I
I
Ground
Key input 4 “ H”: active
Key input 5 “ H” : active (Not used)
CD SYNCHRO REC signal input “L” : active
FOK signal input from CXD2508Q
COUNT signal input from CXD2508Q
I
I
I
I
Key input 1 “ H” : active
Key input 2 “ H” : active
Key input 3 “ H” : active
—
O
O
O
O
Tuner mute control signal output
Not used
LCD drive signal output
Not used
Key input 0 “ H” : active
69 to 80
66
67
68
I/OFunction
O
O
O
O
O
O
I
Segment output to LCD.
Key control signal output A “H” : active
Key control signal output B “H” : active
Key control signal output C “H” : active
Turned detection signal from tuner
Latch output to LED driver “H” : active (Not used)
REC/PB select signal output to tape selector
57
58
59
60
61
62
63
64
65
— 88 —
DO
CLK
CE
STB
RESET
S00 to S11
O
O
O
O
O
I
Serial data output
Serial clock output
Chip enable output
STB signal output
Reset input “L” : reset
Segment output to LCD
VDD
X1
X2
XLAT
FM ST IN
DI 2
DI 1
I/OPin Name
—
—
—
O
I
I
I
+5V power supply
System clock (4.19 MHz)
Latch signal output to CXD2508Q
FM stereo detection signal input
Optical pick-up up detection signal input
Serial data input
FunctionPin No.
Page 37
SECTION 6
EXPLODED VIEWS
NOTE:
• -XX, -X mean standardized parts, so they may have
some difference from the original one.
• Items marked “*” are not stocked since they are
seldom required for routine service. Some delay
should be anticipated when ordering these items.
• The mechanical parts with no reference number in
the exploded views are not supplied.
• Hardware (# mark) list and accessories and packing materials are given in the last of this parts list.
• For detailed German, East European and CIS model
refer to AEP mode.
• Abbreviation
CND : Canadian model
MX : Mexican model
SP: Singapore model
MY : Malaysia model
AUS : Australian model
6-1. TOP AND BOTTOM CABINET SECTION
not supplied
#14
3
#8
#1
not supplied
#18
#4
not
supplied
#2
#8
#1
#18
#3
PT302
#2
#18
10
The components identified by
mark ! or dotted line with mark
! are critical for safety.
Replace only with part number
specified.
Les composants identifiés par une
marque ! sont critiques pour la
sécurité.
Ne les remplacer que par une
piéce portant le numéro spécifié.
8
#1
not supplied
6
#1
#1
4
(EXCEPT
#1
5
AEP, UK)
#13
#1
9
(US, CND)
#1
9
11
(UK)
4
(AEP, UK)
(AEP, SP, MY)
CD mechanism deck
#4
#10
1
2
Ref. No.Part No.DescriptionRemark
14-992-791-01 DOOR, CD
24-992-802-01 RUBBER, FOOT
* 34-992-798-01 CABINET, TOP
* 41-666-445-11 AC SUPPLY BOARD (EXCEPT AEP,UK)
* 41-667-267-11 AC SUPPLY BOARD (AEP,UK)
* 54-992-800-01 WASHER, AC CORD
* 6A-4398-942-A TUNER BOARD, COMPLETE
(US,CND,E,AUS,SP,MY,MX)
* 6A-4403-154-A TUNER BOARD, COMPLETE (AEP,UK)
74-992-801-01 FOOT (B)
* 8A-4403-184-A MAIN BOARD, COMPLETE (US,CND,MX)
* 8A-4403-198-A MAIN BOARD, COMPLETE (AEP,UK)
* 8A-4403-200-A MAIN BOARD, COMPLETE (E,SP,MY)
Front panel
#1
#1
9
(E, MX)
9
(AEP, SP, MY)
9
#1
(AUS)
7
not supplied
Ref. No.Part No.DescriptionRemark
* 8A-4403-328-A MAIN BOARD, COMPLETE (AUS)
! 91-551-506-XX CORD, POWER (E,MX)
! 91-556-035-00 CORD, POWER (UK)
! 91-559-583-11 CORD, POWER (US,CND)
! 91-765-558-11 CORD, POWER (AEP,SP,MY)
! 91-696-966-11 CORD, POWER (AUS)
! PT3021-431-440-11 TRANSFORMER, POWER (US,CND)
! PT3021-431-461-11 TRANSFORMER, POWER (E,SP,MY,MX)
! PT3021-431-462-11 TRANSFORMER, POWER (AEP,UK)
! PT3021-431-489-11 TRANSFORMER, POWER (AUS)
R46A1-249-409-11 CARBON2205%1/4W F
R501-249-847-11 CARBON4.7K5%1/4W
R50A1-247-721-11 CARBON4.7K5%1/4W F
R521-247-721-11 CARBON4.7K5%1/4W F
R531-249-411-11 CARBON3305%1/4W
R911-249-839-11 CARBON2.2K5%1/4W
R921-249-839-11 CARBON2.2K5%1/4W
R931-249-420-11 CARBON1.8K5%1/4W F
R93A1-249-420-11 CARBON1.8K5%1/4W F
R941-249-420-11 CARBON1.8K5%1/4W F
R94A1-249-420-11 CARBON1.8K5%1/4W F
R991-247-704-11 CARBON2205%1/4W F
R2011-249-393-11 CARBON105%1/4W F
R2021-249-393-11 CARBON105%1/4W F
R2031-247-889-00 CARBON270K5%1/4W
R2041-247-889-00 CARBON270K5%1/4W
R2051-249-407-11 CARBON1505%1/4W F
R3241-247-713-11 CARBON1K5%1/4W F
R3251-247-871-11 CARBON47K5%1/4W
R3261-247-871-11 CARBON47K5%1/4W
R3271-249-424-11 CARBON3.9K5%1/4W F
R3281-249-424-11 CARBON3.9K5%1/4W F
R3291-249-427-11 CARBON6.8K5%1/4W F
R3301-249-427-11 CARBON6.8K5%1/4W F
R3311-249-417-11 CARBON1K5%1/4W F
R3321-249-417-11 CARBON1K5%1/4W F
R3331-247-903-00 CARBON1M5%1/4W
IC2018-759-242-58 IC TA8189N
IC4018-759-473-59 IC LC75392
IC4038-759-505-55 IC NJM4558L
IC5018-749-013-85 IC STK405-070A
IC5028-759-111-68 IC UPC1237HA
< JACK >
JK5011-694-092-11 TERMINAL BOARD (SPEAKER)
JK5021-779-715-11 JACK (LARGE TYPE)(PHONES)
< COIL >
L2011-429-552-11 TRANSFORMER, BIAS OSCILLATION
* L5011-420-872-00 COIL, AIR CORE
* L5021-420-872-00 COIL, AIR CORE
R4511-247-710-11 CARBON5605%1/4W F
R4531-247-903-00 CARBON1M5%1/4W
R4541-247-903-00 CARBON1M5%1/4W
R4551-249-418-11 CARBON1.2K5%1/4W F
R4561-249-418-11 CARBON1.2K5%1/4W F
R4571-247-847-11 CARBON4.7K5%1/4W
R4581-247-847-11 CARBON4.7K5%1/4W
R4591-247-723-11 CARBON6.8K5%1/4W F
R4601-247-723-11 CARBON6.8K5%1/4W F
R6281-247-871-11 CARBON47K5%1/4W
R6291-249-409-11 CARBON2205%1/4W F
R6301-249-408-11 CARBON1805%1/4W F
R6311-249-408-11 CARBON1805%1/4W F
R6321-249-408-11 CARBON1805%1/4W F
R6331-249-408-11 CARBON1805%1/4W F
R6341-249-408-11 CARBON1805%1/4W F
R6351-249-408-11 CARBON1805%1/4W F
R6361-247-871-11 CARBON47K5%1/4W
R6371-247-847-11 CARBON4.7K5%1/4W
R1401-249-417-11 CARBON1K5%1/4W F
R1411-249-409-11 CARBON2205%1/4W F
R1451-249-417-11 CARBON1K5%1/4W F
R1461-247-807-11 CARBON1005%1/4W
R1551-249-411-11 CARBON3305%1/4W
L1011-429-550-11 TRANSFORMER, FM ANT
L1021-429-551-11 TRANSFORMER, FM RF
L1031-411-798-11 COIL, FM OSC
L1041-411-901-11 COIL, ANTENNA
L1051-429-555-11 TRANSFORMER, MW OSC
R1011-247-879-11 CARBON100K5%1/4W
R1021-249-417-11 CARBON1K5%1/4W F
R1031-249-393-11 CARBON105%1/4W F
R1041-247-807-11 CARBON1005%1/4W
R1051-249-417-11 CARBON1K5%1/4W F
R1231-247-724-11 CARBON8.2K5%1/4W F
R1261-249-427-11 CARBON6.8K5%1/4W F
R1271-249-427-11 CARBON6.8K5%1/4W F
R1281-249-427-11 CARBON6.8K5%1/4W F
R1291-249-427-11 CARBON6.8K5%1/4W F
R1301-249-407-11 CARBON1505%1/4W F
R1311-247-713-11 CARBON1K5%1/4W F
R1321-247-855-11 CARBON10K5%1/4W
R1331-247-839-11 CARBON2.2K5%1/4W
R1341-247-843-11 CARBON3.3K5%1/4W
R2101-247-847-11 CARBON4.7K5%1/4W
R2111-249-417-11 CARBON1K5%1/4W F
R2121-247-855-11 CARBON10K5%1/4W
R2131-249-417-11 CARBON1K5%1/4W F
R2141-249-427-11 CARBON6.8K5%1/4W F
R215A 1-249-417-11 CARBON1K5%1/4W F
— 111 —
Page 60
HCD-C20/G202
Ver 1.1 2001.06
TUNER
Ref. No.Part No.DescriptionRemark
SFR101 1-238-600-11 RES, ADJ, CARBON 10K
T1011-429-553-11 TRANSFORMER, FM IFT
T1021-429-554-11 TRANSFORMER, AM IFT
!91-551-506-XX CORD, POWER (E,MX)
!91-556-035-00 CORD, POWER (UK)
!91-559-583-11 CORD, POWER (US,CND)
!91-696-966-11 CORD, POWER (AUS)
!91-765-558-11 CORD, POWER (AEP,SP,MY)
HP901 9-980-282-01 P HEAD (PLAY)
HRP901 9-980-283-01 RP HEAD (REC/PLAY)
LCD601 1-801-855-11 DISPLAY PANEL, LIQUID CRYSTAL
M101X-2625-877-1 MOTOR ASSY (SPINDLE)
M102X-2625-769-1 MOTOR ASSY (SLED)
M103X-4948-765-1 MOTOR ASSY (TURN TABLE)
M104X-4948-766-1 MOTOR ASSY (A) (TRAY)
M901 9-980-285-01 MOTOR (CAPSTAN/REEL)
!PT3021-431-440-11 TRANSFORMER, POWER (US,CND)
!PT3021-431-461-11 TRANSFORMER, POWER (E,SP,MY,MX)
!PT3021-431-462-11 TRANSFORMER, POWER (AEP,UK)
!PT3021-431-489-11 TRANSFORMER, POWER (AUS)
The components identified by
mark ! or dotted line with mark
! are critical for safety.
Replace only with part number
specified.
Les composants identifiés par
une marque ! sont critiques pour
la sécurité.
Ne les remplacer que par une
piéce portant le numéro spécifié.
Page 61
MEMO
HCD-C20/G202
— 113 —
Page 62
HCD-C20/G202
REVISION HISTORY
Clicking the version allows you to jump to the revised page.
Also, clicking the version at the upper right on the revised page allows you to jump to the next revised
page.
Ver.DateDescription of Revision
1.1
2001.06 Correction of exploded views and electrical parts list. ( SFD-01009 )
PDF registration. (including : 9-960-868-91)
1.0
1997.04 New
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