Sony HCD-C20, HCD-G202 Service manual
HCD-C20/G202
SERVICE MANUAL
Ver 1.1 2001. 06
HCD-C20/G202 is the tuner, deck, CD
and amplifier section in MHC-C20/G202.
Photo: HCD-C20 (AEP model)
Model Name Using Similar MechanismNEW
CD
SECTION
TAPE
DECK
SECTION
CD Mechanism Type CX3
Base Unit Type KSM-213BCM
Optical Pick-up Type KSS-213B/S-N
Model Name Using Similar Mechanism HCD-H100
Tape Transport
Mechanism Type
US Model
Canadian Model
HCD-G202
AEP Model
UK Model
E Model
Australian Model
HCD-C20
DECK-A
DECK-B
TK20FX-SW943-800
TK20FX-SW943-800
SPECIFICATIONS
COMPACT DISC DECK RECEIVER
— Continued on next page —
9-960-868-12
2001F0200-1
© 2001.6
Sony Corporation
Home Audio Company
Shinagawa Tec Service Manual Production Group
— 1 —
CAUTION
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 —
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.
MODEL IDENTIFICATION
— AC POWER SUPPLY CODE —
AEP model
(Without voltage selector)
Singapore, Malaysia model
(With voltage selector)
UK model
US, Canadian model
E, Mexican model
1. GENERAL
.......................................................................... 4
2. DISASSEMBLY
2-1. CD Door ............................................................................... 5
2-2. CD Mechanism Deck ............................................................ 5
2-3. Front Panel and Main Board ................................................. 6
2-4. Main Board and Tuner Board ............................................... 6
2-5. CD Tray ................................................................................ 7
2-6. CD Decoder Board................................................................7
2-7. Base Unit ..............................................................................8
3. MECHANICAL ADJUSTMENTS ................................9
4. ELECTRICAL ADJUSTMENTS ................................. 9
5. DIAGRAMS
5-1. Circuit Boards Location ...................................................... 14
5-2. Block Diagrams
• Tuner Section
(US, CND, E, SP, MY, MX, AUS models) ...................... 15
• Tuner Section (AEP, UK models)....................................17
• CD Section ....................................................................... 19
• Deck Section .................................................................... 21
• Main Section
(US, CND, E, SP, MY, MX, AUS models) ...................... 23
• Main Section (AEP, UK models)..................................... 25
• Power Section
(US, CND, E, SP, MY, MX, AUS models) ...................... 27
• Power Section (AEP, UK models) ................................... 28
5-3. IC Block Diagrams..............................................................29
5-4. Printed Wiring Board —Main Section —
(US, CND, E, SP, MY, MX, AUS models) ......................... 34
5-5. Schematic Diagram — Main Section —
(US, CND, E, SP, MY, MX, AUS models) ......................... 39
5-6. Schematic Diagram — Main Section —
(AEP, UK models) .............................................................. 43
5-7. Printed Wiring Board —Main Section —
(AEP, UK models) .............................................................. 47
5-8. Printed Wiring Board — CD Section —.............................52
5-9. Schematic Diagram — CD Section — ............................... 57
5-10. Schematic Diagram — Panel Section — ......................... 61
5-11. Printed Wiring Board — Panel Section —.......................65
5-12. Printed Wiring Board — Tuner Section —
(US, CND, E, SP, MY, MX, AUS models)....................... 71
5-13. Schematic Diagram — Tuner Section —
(US, CND, E, SP, MY, MX, AUS models)....................... 75
5-14. Schematic Diagram — Tuner Section —
(AEP, UK models) ............................................................ 79
5-15. Printed Wiring Board — Tuner Section —
(AEP, UK models) ............................................................ 83
5-16. IC Pin Function ................................................................ 87
Australian model
NOTE:
For detailed German, East European, CIS
model, refer to AEP model.
• Abbreviation
CND : Canadian model
MX : Mexican model
SP : Singapore model
MY : Malaysia model
AUS : Australian model
6. EXPLODED VIEWS
6-1. Top and Bottom Cabinet Section ........................................ 89
6-2. Front Panel Section ............................................................. 90
6-3. Cassette Mechanism Deck Section 1 .................................. 91
6-4. Cassette Mechanism Deck Section 2 .................................. 92
6-5. CD Mechanism Deck Section 1 .......................................... 93
6-6. CD Mechanism Deck Section 2 .......................................... 94
6-7. Base Unit Section (KSM-213BCM) ................................... 95
7. ELECTRICAL PARTS LIST ........................................ 96
— 3 —
Location of Parts and Controls
SECTION 1
GENERAL
1
!¢ !º
!∞ !§
!™
!£ !¡
!¶
!•
!ª
@º
@¡
3
42
5
6
987
@™
@£
@¢
@∞
@•@§
1 Disc tray
2 DISC 1 button
3 DISC 2 button
4 DISC 3 button
5 DISC SKIP button
6 § OPEN/CLOSE button
7 DBFB button
8 VOLUME knob
9 Display window
!º TIMER SET, CLOCK LIGHT button
!¡ TIMER MODE button
!™ Remote sensor
!£ CLOCK SET button
!¢ POWER button
!∞ PHONES jack
¢
!§ P (play/pause) button
!¶ SHUFFLE button
!• PROGRAM button
!ª REPEAT button
@¶
#º#¡
@º p(stop) button
@¡ CD button
@™ TAPE button
@£ TUNER/BAND button
@¢ PRESET – button
@∞ PRESET + button
@§ MEMORY button
@¶ – TUNING +/≠ 0/
) ± buttons
@• PRESET EQ button
@ª Deck B
#º Tape operating buttons
r (recording) (for deck A only)
· (play)
0 (fast rewind)
) (fast forward)
p6 (stop/eject)
P (pause)
#¡ Deck A
@ª
— 4 —
SECTION 2
DISASSEMBLY
Note: Follow the disassembly procedure in the numerical order given.
2-1. CD DOOR
CD door
Two craws
1
Pull out the CD tray and remove the
CD door with releasing claws into the
direction of arrow.
2-2. CD MECHANISM DECK
6
Flat type wire (21 core)
(CN09)
3
Screw
(BVTP3x10)
5
CD mechanism deck
1
Two screws (B3x8)
4
Two screws
(BVTP3x10)
7
Harness
(Main board:CN08)
— 5 —
2
Screw
(BVTP3x10)
2-3. FRONT PANEL AND MAIN BOARD
2
Heat sink cover
4
Connector (CN701)
9
Front panel and
Main board
1
Three screws
(BVTP2.6x6)
!º
Screw
(BVTP3x10)
5
Screw
(BVTP3x8)
8
Screw
(BVTP3x6)
HOW TO SET THE
POWER CORD
7
Two screws
(BVTP3x10)
9
Screw
(BVTP3x10)
6
Two screws
(BVTP3x10)
3
Three screws
(BVTP3x10)
2-4. MAIN BOARD AND TUNER BOARD
6
Screw (BVTT3x6)
8
Screw (PTPWH3x10)
7
Screw
(BVTT3x6)
2
Connector
(CN203)
3
Connector
(CN202)
4
Connector
(CN201)
9
Main board
0
PCB holder
POWER CORD
!¡
Tuner board
— 6 —
5
Screw
(BVTP3x8)
1
Harness (CN205)
2-5. CD TRAY
2
Bracket
1
Screw (BVTP2.6x8)
5
CD tray
3
Screw (BVTP2.6x8)
4
Bracket
2-6. CD DECODER BOARD
7
CD decoder board
2
Two screws
(BVTP3x10)
4
Flat type wire (CN06)
5
Connector (CN05)
6
Flat type wire
(CN01)
3
Two claws
— 7 —
1
Two screws (BVTP3x6)
2-7. BASE UNIT
2
1
UD-cam
Screw
(PTPWH3x8)
Note: When installing, set to
the groove of UD-cam.
4
Base unit
3
Two screws
— 8 —
SECTION 3
MECHANICAL ADJUSTMENTS
SECTION 4
ELECTRICAL ADJUSTMENTS
Precaution
1. Clean the following parts with a denatured alcohol-moistened
swab:
record/playback heads pinch rollers
erase head rubber belts
capstan idlers
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 meter Meter 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 SECTION 0 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 —
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 —
TUNER SECTION 0 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 —
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.
Adjustment Location: TUNER board
Adjustment Location
set
Carrier frequency : 98 MHz
Modulation : AUDIO 1 kHz, 75 kHz
Output level : 28 dB (at 75
deviation (100%)
Ω
open)
FM ANTENNA terminal
(JK101)
Procedure:
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 —
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 —
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 IN IF OUT
1 6
MAX IN OSC
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
3 8
D107
END
L.P.F
Q107,108
21 1 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 —
— 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 IN IF OUT
1 7
FM FRONT
VT OSC
5 8
TP2
TC102
L104,TC102
AM TRACKING
U1
END
L.P.F
Q107,108
21 1 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
3 6
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 —
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 —
— 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 —
HCD-C20/G202
— MAIN SECTION — (US, CND, E, MY, SP, MX, AUS models)
— 23 —
— 24 —
— 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
36 63 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
15 11
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
46 47
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 —
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