Sony HCD-GRX2 User manual

HCD-GRX2/RX33
US Model
Canadian Model
HCD-RX33
E Model
Australian Model
HCD-GRX2
SERVICE MANUAL
MINI Hi-Fi COMPONENT SYSTEM
MICROFILM
HCD-GRX2/RX33 is the tuner, deck, CD
and amplifier section in MHC-GRX2/RX33.
— Continued on next page —
SPECIFICATIONS
Model Name Using Similar Mechanism HCD-G101
CD Mechanism Type CX3
Base Unit Type KSM-213BCM
Optical Pick-up Type KSS-213B/S-N
Model Name Using Similar Mechanism HCD-G101
DECK-A TK20FX-SW943-800
DECK-B TK20FX-SW943-800
CD
SECTION
TAPE
DECK
SECTION Tape Transport
Mechanism Type
AUDIO POWER SPECIFICATIONS:
(U.S.A.model only)
POWER OUTPUTAND TOTAL HARMONIC DISTORTION:
with 6 Ωloads both channels driven, from 70 – 20,000 Hz; rated 25 W per
channel minimum RMS power, with no more than 0.9% total harmonic
distortion from 250 mW to rated output.
Amplifier section
North American model
Continuous RMS power output
35 W + 35 W (6 Ωat 1 kHz, 10% THD)
Other models
The following measured at AC 110,220 V 60 Hz;
DIN power output (Rated) 25 W + 25 W (6 Ωat 1 kHz, DIN)
Continuous RMS power output (Reference)
30 W + 30W (6 Ωat 1 kHz, 10% THD)
The following measured at AC 120,240 V 60 Hz;
DIN power output (Rated) 30 W + 30 W (6 Ωat 1 kHz, DIN)
Continuous RMS power output (Reference)
35 W + 35W (6 Ωat 1 kHz, 10% THD)
Peak music power output (Reference)
400 W
Outputs
PHONES (stereo phone jack) :
accepts headphones of 8 Ωor more
SPEAKER : accepts impedance of 6 to 16 Ω
CD player section
System Compact disc and digital audio system
Laser Semiconductor laser (λ= 780 nm)
Emission duration: continuous
Laser output Max. 44.6 µW*
*This output is the value measured at a
distance of 200 mm from the objective
lens surface on the Optical Pick-up Block
with 7 mm aperture.
Frequency response 20 Hz – 20 kHz (± 0.5 dB)
Wavelength 780 – 790 nm
Tape deck section
Recording system 4 -track 2 -channel stereo
Frequency response 60 – 13,000 Hz (± 3dB), using Sony
TYPE Ιcassette
Photo : HCD-GRX2

— 2 —
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.
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.
SERVICING NOTE
NOTES ON HANDLINGTHE 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 pick-
up block. Therefore, when checking the laser diode emission,
observe from more than 30 cm away from the objective lens.
SAFETY-RELATED COMPONENTWARNING!!
COMPONENTS IDENTIFIED BY MARK !OR DOTTED LINEWITH
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.
Tuner section
FM stereo, FM/AM superheterodyne tuner
FM tuner section
Tuning range 87.5 – 108.0 MHz
Antenna FM lead antenna
Antenna terminal 75 Ωunbalanced
Intermediate frequency 10.7MHz
AM tuner section
Tuning range
European, Australian and South African models:
531 – 1,602 kHz
Other models: 530 – 1,710 kHz
Antenna AM loop antenna
Antenna terminals External antenna terminal
Intermediate frequency 450 kHz
General
Power requirements
Mexican model: 120 VAC, 50/60 Hz
Australian and South African models:
220 – 240 VAC, 50/60 Hz
Other models: 120V AC, 60Hz
Power consumption 80 W
Dimensions (w/h/d) incl. projecting parts and controls
Approx. 280 ×320 ×371 mm
(11 1/8×12 5/8×14 5/8in)
Mass Approx. 7.2 kg (15 lb 14 oz.)
Supplied accessories: AM loop antenna (1)
Remote RM-SG5 (1)
FM lead antenna (1)
Design and specifications are subject to change without notice.
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!
LES COMPOSANTS IDENTIFÉS PAR UNE MARQUE !SUR LES
DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES SONT
CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE
REMPLACER CES COMPOSANTS QUE PAR DES PIÈSES SONY
DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU
DANS LES SUPPÉMENTS PUBLIÉS PAR SONY.

— 3 —
SAFETY CHECK-OUT
After correcting the original service problem, perform the following
safety checks before releasing the set to the customer:
Checktheantenna terminals, metaltrim,“metallized” knobs,screws,
and all other exposed metal parts forAC 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
VOM or battery-operatedAC 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
0.15
µ F1.5 k
Ω
AC
Voltmeter
(0.75 V)
Earth Ground
Fig.A. Using anAC voltmeter to check AC leakage.
TABLE OF CONTENTS
1. GENERAL .......................................................................... 4
2. DISASSEMBLY
2-1. CD Door ............................................................................. 5
2-2. CD Mechanism Deck ......................................................... 5
2-3. Front Panel ......................................................................... 6
2-4. Main Board and H.P Board ................................................ 6
2-5. CD Tray .............................................................................. 7
2-6. CD Decoder Board ............................................................. 7
2-7. Base Unit ............................................................................ 8
2-8. Cassette Lid (L)/(R)............................................................ 8
3. MECHANICAL ADJUSTMENTS ............................... 9
4. ELECTRICAL ADJUSTMENTS ................................. 9
5. DIAGRAMS
5-1. Circuit Boards Location ................................................... 14
5-2. Brock Diagrams
• Deck Section ................................................................... 15
• Tuner/CD Section............................................................ 17
5-3. IC Brock Diagrams........................................................... 19
5-4. Schematic Diagram —Main Section — ...........................24
5-5. Printed Wiring Board — Main Section — ....................... 29
5-6. Printed Wiring Board —CD Section — ........................... 34
5-7. Schematic Diagram —CD Section —.............................. 39
5-8. Schematic Diagram — Panel Section — ......................... 43
5-9. Printed Wiring Board —Panel Section —........................ 47
5-10. IC Pin Function ................................................................ 52
6. EXPLODEDVIEWS
6-1. Cabinet Section................................................................. 54
6-2. Front Panel Section .......................................................... 55
6-3. Cassette Button Section.................................................... 56
6-4. Cassette Mechanism Deck Section................................... 57
6-5. CD Mechanism Deck Section 1 ....................................... 58
6-6. CD Mechanism Deck Section 2 ....................................... 59
6-7. Base Unit Section (KSM-213BCM)................................. 60
7. ELECTRICAL PARTS LIST ........................................ 61

— 4 —
SECTION 1
GENERAL
LOCATION OF PARTS AND CONTROLS
1Disc tray
2DISC 1 button
3DISC 2 button
4DISC 3 button
5DISC SKIP button
6§OPEN/CLOSE button
7DBFB button
8VOLUME knob
9Display window
!º CLOCK TIMER SET button
!¡ TIMER ON/OFF button
!™ DISPLAY DEMO
!£ TUNER/BAND
!¢ ·∏(play/pause) button
!∞ ENTER/NEXT button
!§ ≠±CD AMS/TUNER PRESET TIMER
SET buttons
!¶ FILE SELECT
!• I/u(POWER) button
!ª TUNER MEMORY REPEAT button
@º EDIT button
@¡ STEREO/M NO, PLAYMODE button
@™ TAPE button
@£ π(STOP) button
@¢ 0)CD/TUNER button
@∞ PHONES jack
@§ Deck A, PLAY/REC
@¶ Deck B, PLAY
@• Tape operaying buttons
r(recording)
((play)
0(fast rening)
)(fast forward)
p6(stop/eject)
P(pause)
7
!¶
123456
9
!§
!∞
!¢8!£!™
!¡
!•
!º
!ª @º @¡ @™ @£ @¢
@∞
@§
@•
@¶

— 5 —
SECTION 2
DISASSEMBLY
Two craws
1 Pull out the CD tray and remove the CD door
with releasing claws into the direction of arrow.
2 CD door
2-1. CD DOOR
Note : Follow the disassembly procedure in the numerical order given.
6 CD mechanism deck
1 Two screws (+B 3 × 8)
3 Two screws (+BVTP 3 × 10)
2 Screw (+PTPWH 3 × 10)
2 Screw (+PTPWH 3 × 10)
4 Flat type wire (CN09)
5 Harness (CN302)
2-2. CD MECHANISM DECK

— 6 —
7 Screw
(+PTPWH 3 × 10)
3 Screw (+BVTP 3 × 10)
4 Screw (+BVTP 3 × 10)
5 Two screw (+BVTP 3 × 10)
6 Two screws
(+BVTP 3 × 10)
7 Screw (+PTPWH 3 × 10)
8 Screw (+BVTP 3 × 10)
2 Three screws
(+BVTP 3 × 10)
1 Connector (CN401)
9 Front panel
HOW TO SET THE
POWER CORD
power cord
1 Harness (CN303)
8 H.P board
2 Harness (CN204)
3 Connector
4 Connector (CN202)
5 Connector (CN201)
7 MAIN board
6 Two screws
(+KTP 3 × 8)
Craw
2-3. FRONT PANEL
2-4. MAIN BOARD AND H.P BOARD

— 7 —
1 Screw (+P 2.6 × 4)
2 Bracket
4 Bracket
5 Flat type wire
(CN06)
3 Screw (+P 2.6 × 4
)
6 CD tray
1 Two screws (+BVTP 3 × 10)
2 Two screws (+BVTP 3 × 10)
Two craws
7 CD DECODER board
3 Belt
6 Flat type wire (CN06)
5 Flat type wire (CN01)
4 Connector (CN05)
!º Connector (CN03)
8 Two screw
(+BVTP 3 × 10)
9 Sheet
Craw
Craw
2-5. CDTRAY
2-6. CD DECODER BOARD

— 8 —
2 Screw (+PTPWH 2.6 × 8)
3 UD-gear
4 Screw (+PTPWH 2.6 × 8)
5 UD-Cam
8 Spring
7 Spring
6 Spring
1 Two screws (+KTP 3 × 8
)
9 Base unit
Four craws
Four craws
2 Cassette lid (R)
1 Cassette lid (L)
2-7. BASE UNIT
2-8. CASSETTE LID (L) / (R)

— 9 —
Precaution
1. Clean the following parts with a denatured alcohol-moistened
swab:
record/playback head 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
SECTION 3
MECHANICAL ADJUSTMENTS
Meter reading
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)
Torque
FWD
FWD
back tension
FF/REW
Torque meter
CQ-102C
CQ-102C
CQ-201B
SECTION 4
ELECTRICAL ADJUSTMENTS
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 R-
CH.
Record/Playback Head Azimuth Adjustment
(Deck A, Deck B)
Note: Perform this adjustments for both decks.
Procedure:
1. Mode : Playback
DECK SECTION 0 dB=0.775V
Tape
P-4-A100
WS-48B
Signal
10 kHz, –10 dB
3 kHz, 0 dB
Used for
AzimuthAdjustment
Tape Speed Adjustment
test tape
P-4-A100
(10kHz, –10dB) SPEAKER
terminal (JK501)
level meter
+
–
set

— 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.
3. Mode: Playback
4. After the adjustments, apply suitable locking compound to the
parts adjusted.
Adjustment Location:
Remove the cassette lid before adjustment (See page 8)
test tape
WS-48B
(3kHz, 0dB)
Tape Speed Adjustment (Deck A)
Procedure:
1. Mode: Playback
2. Adjust the SFR201 so that the frequency counter reads 3,000
Hz ± 90Hz.
Adjustment Location: MAIN board
Sample Value of Wow and flutter
W. RMS (JIS) within 0.3%
(test tape: WS-48B)
[MAIN BOARD] — Component side —
CN204
L-CH
peak
R-CH
peak
screw
position
output
level within
2dB within 2dB
L-CH
peak
screw
position
R-CH
peak
test tape
P-4-A100
(10kHz, –10dB) SPEAKER
terminal (JK501)
(L-CH)
set
L
R
oscilloscope
SPEAKER
terminal (JK501)
(R-CH)
Waveform of oscilloscope
in phase 45˚ 90˚ 135˚ 180˚
good wrong
SPEAKER
terminal (JK501)
set
frequency counter
+
–
SFR201
Tape Speed
Adjustment screws
REC/PB head (deck A)
or PB head (deck B)

— 11 —
TUNER SECTION 0 dB=1µV
AM Tuning Voltage Adjustment
Procedure:
1. Set the reception frequency of the unit to 530 kHz.
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.
4. Confirm that the voltage reading on the DC voltmeter is within
8.0 ± 0.5 V.
Adjustment Location: MAIN board (See page 12)
AMTracking Adjustment
Procedure:
1. Tune the set to 600 kHz.
2. Set the output ofAM 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.
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: MAIN board (See page 12)
FMTuning Voltage Adjustment
DC voltmeter
Procedure :
1. Set the reception frequency of the unit to 87.5 MHz.
2. Adjust L103 for 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: MAIN board (See page 12)
TP1
+
IF
G
VT
Main board
DC voltmeter
Main board
–
F
G
VT
TP1
+
–
AM RF SSG
loop antenna
set
loop antenna
(Supplied accessories)
60 cm AM ANTENNA
terminal (TM1)
30% amplitude
modulation by
400 Hz signal Field strength dB (
µ V/m) =SSG output level dB ( µ V/m) –26 dB.

— 12 —
FM Tuned Level Adjustment
set
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: MAIN board
FMTracking Adjustment
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: MAIN board
Adjustment Location
[MAIN BOARD] — Component side —
JK501
JK101
L105
TC102
L104
IC101
L102
L103 TC101
SFR101
IC102
TP1
IC103
AM
Tracking
AM Tuning
Voltage
FM Tuning
Voltage
FM
Tracking
FM Tuned Level
Carrier frequency: 90 MHz, 106 MHz
Modulation : AUDIO 1kHz, 75kHz deviation (100%)
Output level : 20 dB (at 75
Ω open)
FM RF SSG
Carrier frequency : 98 MHz
Modulation : AUDIO 1 kHz, 75 kHz
deviation (100%)
Output level : 28 dB (at 75
Ω open)
FM ANTENNA terminal
(JK101)
75
Ω coaxial
FM ANTENNA terminal (JK101)
SPEAKER terminal (JK501)
FM RF SSG
set
oscilloscope

— 13 —
IC03 VR02
VR01
R07
IC01
CN12
Focus Gain
Focus Bias
RF Level
CD SECTION
Note:
1. CD Block is basically constructed to operate without
adjustment. Therefore, check each item in order given.
2. UseYEDS-18 disc (3-702-101-01) unless otherwise indicated.
3. Use an oscilloscope with more than 10MΩimpedance.
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 focusbiasadjustmentwhen optical blockisreplaced.
Focus Bias Adjustment
RF Level Check
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
level: 1.0 Vp-p
VOLT/DIV: 200 mV
TIME/DIV: 500 nS
+0.3
–0.2
Adjustment Location: CD DECODER board
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.
Adjustment Location
[CD DECODER BOARD] — Component side —
CD DECODER
boardCN12
FEO
VC
DC voltmeter
+
–
CD DECODER
board
TP (RF)
CN12 (VC)

— 14 —
SECTION 5
DIAGRAMS
5-1. CIRCUIT BOARDS LOCATION
SW (C) board
SW (D) board SW (B) board
DISK board
PANEL board
CD DECODER board
H.P board
SENSOR board
R/P SWITCH board
VR board
AC POWER boar
d
MAIN board
SW (A) board
MOTOR board
MOTOR (6P) (S) board

HCD-GRX2/RX33
5-2. BLOCK DIAGRAMS
— DECK SECTION —
— 15 — — 16 —
HP901
PB
HEAD
TAPE B
HRP901
REC/PB
HEAD
TAPE A
R CHR CH
R CH
PLAY/REC
CONTROL
Q203, 205
PLAY/REC
CONTROL
DRIVE
Q207
MUTE
SWITCH
Q216
TAPE A/B
SWITCH
Q213
PLAY/REC
CONTROL
D209
L201
BIAS OSC
BIAS
OSC
Q218
HE901
ERASE
HEAD
R CH
1
2
9
3
REC OUT
PB OUT
A/B
5
19
11
10
REC/PB
EQ AMP
IC201
TAPE A/B
Q209
MUTE
TAPE A
SWITCH
Q214
Q211
Q220
REC SWITCH
MUTE
CONTROL
Q
Q217
D205 D203
D202
D212
D210
D211
D210
S201
A DECK
S202
B DECK
S203
PLAY
M
D207D206
M901
REC/CAPSTAN
MOTOR
TAPE SPEED
SFR201
+11.5V
D208
SW201
REC/PLAY
PLAY
REC
: FM
: CD
• Signal Path
• RCH is omitted
B
CD
SECTION
TU L
11
9
Q301
10
ST IND
TU MUTE
DO
CD L
12
CONTROL
3 2 1
CLK
14
DI
15
CE
13
SELECTOR
IC301
CLK DI CE
LINE AMP
IC302
7
5
BASS BOOST
SWITCH
Q307 Q303
MUTE
13 2
7 4
POWER AMP
IC501
SPEAKER
RELAY
DRIVE
Q551
Q553 1
26
IC502IC502
RL501
R CH
SPEAKER
PHONES
JK501
JK303
SCOR
SENS
SQSO
XLAT
SQCK
DATA
DI
CLK
CE
STB
26
STB
21
CE
22
CLK
23
DI
18
DATA
17
SQCK
20
XLAT
19
SQSO
51
SENS
38
SCOR
MUTE
DRIVE
Q583,584
Q604
MUTE
MUTE
SWITCH
Q603
CD SYNC
SWITCH
Q208
4
TU MUTE
24
DI1
48
SYS REC
7
DBFB
3
SYSTEM MUTE
2
POWER
LED DRIVE
IC602
2
3
4
36
ALATCH
11
13 LED
DRIVE
DI
CLK
Q208
Q605,606
RESET
SWITCH POWER DOWN DET
Q601
10
RESET
15
POWER DOWN
Q602
LED602
LED601
Q602
D602
X2
11
X1
12
VR UP
44
X601
4.19MHz
VR DOWN
45
VR601
ENCODER
PIC UP
55
PIC DOWN
56
TRAY OPEN
59
TRAY CLOSE
60
TURN TABLE
58
DISC COUNT
57
AB
S02
TRAY
OPEN/CLOSE
DET
S03
DISC
COUNTER
DET
S04
TURNTABLE
OPERATION
DET
S01
CD DECK
UP/DOWN
DET
3
2
Q601 RM601
REMOTE
CONTROL
RECEIVER
39
REMOTE
64 78
KEY
MATRIX
S601-623
P1 P21 100 86
G1 G15
.81 85
33 29
KI0 KI4
FLD601
FLD DISPLAY
SYSTEM CONTROLLER/
FLD DRIVER
IC601
+5.6V
REG
Q404
SITCHING
Q406,407
+11.5V
(SWITCHED)
+11.5V FILTER
Q402
+7.9V
REG
Q403
+7.9V +12V
REG
Q401
RECT
D405-408
MUTE
Q585,586
P MUTE
CONT
Q409
AC OFF
DET
Q410
D417
D416
D553
RECT
D401
D409
-12V
-30V
+30V
-27V
REG
Q408
-27V VOLTAGE
DOUBLER
D414,415
AC
IN
PT001
AC3.4V
AC3.4V
12
16
A
TUNER
SECTION
: PB (DECK A)
: PB (DECK B)
: REC (DECK A)
Q207
Q201
CE
CLK
DI
COUNT
FOK
52
FOK
53
COUNT
47
FM ST IND

HCD-GRX2/RX33
—TUNER/CD SECTION —
— 17 — — 18 —
CE
19 12
5
3
4
2
24
1
PLL
IC103
FM
XO
XI CLK
DI
DO
CE
CLK
DI
DO
OPTICAL PICK-UP
BLOCK
APC
Q01 38
+5V
VC
LD
GND
A
C
B
E
F
FOCUS
COIL
F+
F
T+
T
TRACKING
COIL
33
34
39
36
35
48
APC
FOCUS PHASE
COMPENSATION
DECODER
SERIAL/
PARALLEL
CONVERTER
FE
AMP
RF
AMP
IIL
TTL
TTL
IIL
COMAND
VC
TRACKING PHASE
COMPENSATION
LD
PD
E
F
PD1
PD2
6
24
23
20
19
22
21
31
25
SENS
RFO
FOK
C OUT
DATA
XLT
CLK
XRST
13
FEO TAO
IC03
T.T/TRAY MOTOR
DRIVER
CD RF/SERVO
PROSSESOR
IC01 (1/2)
4
5
T IN
3
2
1
VR
PD
PD
18
17
20
19
6
F IN
22
SL IN
13
T.T F IN
F+
F
T+
T
SL+
SL
SP+
SP
M
M
MOTOR
M102
SLED
MOTOR
M101
SPINDOL
EFM
DEMO.
XRST
CLV
SERVO
DIGITAL
CLV
D/A
I/F
SUB CODE
PROSSESOR
CPU I/F
911 5 4 7 61
MDP
SENS
SCOR
SQSO
SQCK
CLOCK
DATA
CLK
XLT
DAT
SE
CN
FOK
RF
SERIAL
I/F PWM
PWM 70
69
73
74
NL
L
XTA1
XTA0 X701
MUTE
R-CH
CD DIGITAL
SIGNAL PROCESSOR
IC04
16
:FM
:CD
• SIGNAL PATH
14
7
8
4
2
1
6
10
DETECTOR
16
OSC
FM
75Ω
AM
ANTENNA
JK101
D101
L101
FM ANT
L102
FM RF
3
1RF MIX 6
8
FM FRONT END
IC101
RF IF
AMP
Q101
CF101
10.7MHz
T101 CF102
10.7MHz
FM OSC
AMP
Q102
D103
L103
L105
MW OSC
IF
G
VT
AM/FM
TUNING
VOLTAGE
TP1
L104
AM ANT
AM RF
AMP
Q104
MPX
16
FM IF
1
OSC
23
AFC
22 AM RF
21
FM
IF
AF DET
18
FM
DET
AM/FM
IF BUFF
AM
OSC AM MIX
AM
DET
SMET
20
CF103
450kHz
MUTE
AGC
AM
IF
DECODER 14
L
15
R
4
2
T102
AM IFT
8
FM DET
17
MPX VCO
CF104
10.7MHz
CF105
19kHz
R CH
FM/AM MPX
IC102
L.P.F
Q105,106
FM
TUNED
LEVEL
PD1
21
X201
7.2MHz
FM B+
17
TUB+
B+
Q103
PL DET
13
18
AM
OSC/FMSD
24
B+
7
SD
PH DET
11
PH DET
12
14
ST/MONO
TU LED
6
13
AM/FM
SD
15
L CTR 16
R CTR
7
ST IND
10
AM/FM
MUTE
Q109
TU L
ST IND
TU MUTE
DO
A
MAIN
SECTION
D
5
LD ON
SWITCH
Q02
LD
PD
F/T COIL
SL/SP MOTOR
CN12
CN2
ATSC
45 FEO
1
TEO
42
FOCUS
TRACKING
37 40
FE BIAS EI
RV01
FOCUS
GAIN
RV02
14
15
30
31
T.T+
T.T
TR+
TR
M
M
MOTOR
T/T
MOTOR
TRAY
21
SP IN
29
TR F IN
12
T.T R IN
28
TR T IN
27
MUTE IN
IC06
IC01 (2/2)
67
REG
Q11
9
REG I
10
REG B
11
REG OUT
7
VCC 8
VCC
+5V
+7.5V
XRST
6
SPEED
11
CONTRL
5
SWITCH
Q04
13
14
TR+
TR
7
14
T.T+
T.T
4
MUTE
2
DATA 3
CLOK
1
STB
IC02
MOTOR DRIVE
REG CONTROL
T.T/TRAY
36
23
14
13
15
16
17
8
25
18
SPOA
LIMIT
SWITCH
S05
10
XLAT
CLOCK
GEN.
PWM
PWM 77
78
NR
R
22
XLON
1
3
2IC05
MIX AMP
MUTE
Q311
CD L
SCOR
SENS
SQSO
XLAT
SQCK
DATA
CE
STB
CLK
DI
B
MAIN
SECTION
:AM
• RCH is omitted
SFR101
CLK
DI
COUNT
FOK

HCD-GRX2/RX33
— 19 — — 20 — — 21 — — 22 — — 23 —
FM IF REG GND VCC
FM DET
S-CURVE TUNING
DRIVE
LEVEL
DET
AM/FM
IF BUFE
ALC
BUFFER
AM
OSC AM MIX
AM
RF AMP
AGC
AM DETAM IF
COMP
FM
AM
MUTE DECORDER
STEREO DRIVE
FF
TRIG
PHASE
DET
VCO
AM/FM
SW
PILOT
DET
STEREO SW
36 9 122 5 8 11
14 7 10
22 19 16 13
23 20 17 14
24 21 18 15
OSC/FMSD OSC AFC AM RF SMET AMHPF AFDET MPX VCO MPX IN ROUT L OUT PL DET
FM IF AM MIX REG AM IF GND TU LED ST IND FM DET VCC AM/FM PH DET PH DET
XIN
CE
DI
CL
DO
SYC
IN0
IN1
OUT0
OUT1
OUT2
OUT3
SHIFT REGISTER
LATCH
12 BIT
PROGRAMMABLEDIVIDER
SWALLOW COUNTER
1/16 . 1/17 BIT
REFERENCE
DIVIDER PHASE DETECTOR
CHARGE PUMP
1 / 2
X OUT
VSS
PD2
PD1
VDD
FM IN
AM IN
OUT 6
HCTR
LCTR
OUT 5
OUT 4
UNIVERSAL
COUNTER
7
10
11
12
9
8
6
5
4
3
2
1
13
14
24
23
22
21
20
19
18
17
16
15
+
–
3
6
9
12
15
2
5
8
11
14
1
4
7
10
13
28
25
22
19
16
29
26
23
20
17
30
27
24
21
18
+
–
+
–
+
–
LATCH
DECODER
CONTROL
SHIFT
REGISTER
–
+
LVROUT
LVRIN
LTOUT
LTCOM
LT4
LT3
LT2
LT1
L4
L3
L2
L1
VDD
CL
DI
RVROUT
RVRIN
RTOUT
RTCOM
RT4
RT3
RT2
RT1
R4
R3
R2
R1
VREF
VSS
CE
CH2/A CH2/B NF VCC CG NF ALC
METAL
OUT PRE OUT TAPE A /TAPE B REC OUT REC IN
CH1/A CH1/B NF GND1 M/H NF
CH2 CH2
ALC
M/N
CH1
GNDGND
CH1
+
–+
–
+
–+
–
A/B
GNDMETAL
OUT PRE OUT MIX OUT REC OUT REC IN
IREF VREF2 VREF1
24 23 22 21 20 19 18 17 16 15 14 13
123456789101112
DRIVER
DRIVER
GND
MUTE
CONTROL
XRST
T.T(M)
POSI.1
POSI.2
T.T.SW
VDD
STB
CLOK
DATA I
DATA 0
LOADING
M-
LOADING
M+
SENSOR
1
8
2
3
4
5
6
7
16
9
15
T
C14
13
12
11
10
SERIAL I/O
CONTROL
LATCH
LATCHLATCH
36
PHD2 PHD1 PHD
33
LD
32
RF M
31
RF O
30
RF I
29
CP
28
CB
27
CC1
26
CC2
25
FOK
24 SENS
23 C. OUT
22 XRST
21 DATA
20 XLT
19 CLK
18 VCC
17 ISET
16 SL 0
15 SL M
14 SL P
13
12
TA O
TA M
11
FSET
10
TG2
9
TGU
8
SRCH
7
FE M
6
FE O
5
FLB
4
FGD
3
FDFCT
2
FEI
1
FEO
48VC
47TDFCT
46TZC
45ATSC
44TEI
43LPFI
42TEO
41VEE
40EI
39E
38F
37FE BIAS
+
+
–
+
+
–
+
–
+
–
+
–
+
–
+
–
+
+
+
–
+
–
+
–
+
–
+
–
+
–
+
–
+
–
–
+
+
–
–
+
+
–
+
–
+
–
+
–
+
–
APC
–
–
–
–
LEVELS
FOK
MIRR
DFCT
RF IV AMP2
RF IV AMP1
FE AMP
F IV AMP
E IV AMP
TE AMP
FZC COMP
BAL1 BAL2 BAL3
TOG1 TOG2 TOG3
TTL
IIL
IIL
TTL
TTL
IIL
• IIL DATA RESISTOR • INPUT SHIFT RESISTOR
• ADDRESS DECODER
• OUTPUT DECODER
HPF COMP LPF COMP
TZC COMP
DFCT
DFCT
TM1
FS4
ATSC
• WINDOW COMP
• FCS PHASE
COMPENSATION
• TRACKING
• PHASE
COMPENSATION
• ISET
FS1
FS2
TM4
TM5
TM6
TM3
TM7
TG2
• F SET
TG1
TM2
+
–
TOG1-3 FS1-4 TG1-2 TM1-7 PS1-4
BAL1-3
35 34
IC01 (CD DECORD BOARD) CXA1782BQ IC102 (MAIN BOARD) LA1831
IC103 (MAIN BOARD) LC7218-ST
IC301 (MAIN BOARD) LC75392
IC201 (MAIN BOARD)TA8189N
IC02 (CD DECORD BOARD)TC9173P
5-3. IC BLOCK DIAGRAMS
+–
LEVEL SHIFT
+– +–
1 2 345678910 11 12 13 14
28 27
LEVEL SHIFT
+–
+
–
MUTE
+
–
+–
LEVEL SHIFT
+– +–
LEVEL SHIFT
+–
+
–
+
–
15
1617
18
19
21 20
22
26 25 24 23
+–
NC
Vcc
VccVcc
VCC
BIAS IN
IN1B IN1A IN2B IN2A
GND GND
MUTE
VCC
OUT2A OUT2B OUT1A OUT1B
IN4B IN4A IN3B IN3A OP OUT OP IN (–) OP IN (+) GND NC VCC OUT3A OUT3B OUT4A OUT4B
12 3 45 6 7 8 9
1016 15 14 13 12 11
CONTROL
CIRCUIT
12 BIT
SHIFT
REGISTER
12 BIT
STORAGE
REGISTER
OUTPUT
BUFFER
(OPEN DRAIN)
1718
VDD OE Q11 Q10 Q9 Q8 Q7 Q6 Q5
Q4 Q3 Q2 Q1 Q0
LCK
CLOCK
DATA
VSS
IC03 (CD DECORD BOARD) BA5941FP
IC602 (PANEL BOARD) BU2092

5-10. IC PIN FUNCTION
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
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
I/O
—
O
O
O
O
O
O
O
O
—
I
I
—
—
I
—
O
O
I
O
O
O
O
I
—
O
O
—
I
I
I
I
I
O
—
O
O
I
I
—
O
I
O
I
I
—
I
I
I
I
Pin Name
VDD
POWER OUT
S. MUTE OUT
TU. MUTE OUT
TUNED OUT
TAPE REC OUT
DBFB NORMAL
NC
NC
RESET
X2
X1
VSS
NC
POWER DOWN IN
VDD
SOCK
DATA
SOSO
XLAT
CE
CLK
DO
DI
VSS
CD STB
FLAT
VSS
K4
K3
K2
K1
K0
AVDD
AVREF
A LATCH
B LATCH
SCOR
REMOTE IN
VSS
NC
VSS
DECK STB
VR UP
VR DOWN
VDD
FM ST IN
SYNC REC IN
VSS
VSS
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
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
I/O
I
I
I
—
I
I
I
I
I
I
I
O
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
O
O
O
O
O
O
O
O
O
Description
Input from CXD2508A SENS
Input from CXD2508A FOK. OK: H, Others: L
Input from CXD2508A COUNT
Ground
Input from CD mechanism pick up switch. Up: L, Others: H
Input from CD mechanism pick down switch. Down: L, Others: H
Input from CD mechanism disc count switch. Count: L, Others: H
Input from CD mechanism turn table switch. ON: L, OFF: H
Input from CD mechanism tray open switch. Open: L, Others: H
Input from CD mechanism tray close switch. Open: L, Others: H
AMS signal input. During program: H, Interval between programs: L
Serial mute (tuner) output (Not used)
Input from destination select mode switch. ON: H, OFF: L
FLD segment signal output P1. ON: H, OFF: L
FLD segment signal output P2. ON: H, OFF: L
FLD segment signal output P3. ON: H, OFF: L
FLD segment signal output P4. ON: H, OFF: L
FLD segment signal output P5. ON: H, OFF: L
FLD segment signal output P6. ON: H, OFF: L
FLD segment signal output P7. ON: H, OFF: L
FLD segment signal output P8. ON: H, OFF: L
FLD segment signal output P9. ON: H, OFF: L
FLD segment signal output P10. ON: H, OFF: L
FLD segment signal output P11. ON: H, OFF: L
FLD segment signal output P12. ON: H, OFF: L
FLD segment signal output P13. ON: H, OFF: L
FLD segment signal output P14. ON: H, OFF: L
FLD segment signal output P15. ON: H, OFF: L
(–) negative power supply
FLD segment signal output P16. ON: H, OFF: L
FLD segment signal output P17. ON: H, OFF: L
FLD segment signal output P18. ON: H, OFF: L
FLD segment signal output P19. ON: H, OFF: L
FLD segment signal output P20. ON: H, OFF: L
FLD segment signal output P21. ON: H, OFF: L
FLD grid signal output 15. ON: H, OFF: L
FLD grid signal output 14. ON: H, OFF: L
FLD grid signal output 13. ON: H, OFF: L
FLD grid signal output 12. ON: H, OFF: L
FLD grid signal output 11. ON: H, OFF: L
FLD grid signal output 10. ON: H, OFF: L
FLD grid signal output 9. ON: H, OFF: L
FLD grid signal output 8. ON: H, OFF: L
FLD grid signal output 7. ON: H, OFF: L
FLD grid signal output 6. ON: H, OFF: L
FLD grid signal output 5. ON: H, OFF: L
FLD grid signal output 4. ON: H, OFF: L
FLD grid signal output 3. ON: H, OFF: L
FLD grid signal output 2. ON: H, OFF: L
FLD grid signal output 1. ON: H, OFF: L
Pin Name
SENS
FOK
COUNT
VSS
PIC UP
PIC DOWN
DISC COUNT SW
TURN TABLE SW
TRAYOPEN SW
TRAYCLOSE SW
VSS
SERI MUTE
(TUNER)
MODE SW IN
P1
P2
P3
P4
P5
P6
P7
P8
P9
P10
P11
P12
P13
P14
P15
–V LOAD
P16
P17
P18
P19
P20
P21
G15
G14
G13
G12
G11
G10
G9
G8
G7
G6
G5
G4
G3
G2
G1
SECTION 6
EXPLODEDVIEWS
NOTE:
• -XX, -X mean standardized parts, so they may
have some differences from the original one.
• Items marked “*” are not stocked since they
are seldom required for routine service. Some
delayshouldbeanticipated when orderingthese
items.
When indicating parts by reference number,
please include the board name.
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 pièce portant
le numéro spécifié.
1 4-210-302-01 RUBBER, FOOT
2 4-210-292-01 DOOR, CD
3 4-210-297-01 CABINET
*4 A-4405-471-A MAIN BOARD, COMPLETE
*5 1-670-391-11 AC POWER BOARD
!6 1-559-583-11 CORD, POWER (US, CND)
!6 1-551-506-99 CORD, POWER (MX, SAF)
!6 1-696-966-11 CORD, POWER (AUS)
7 4-210-299-01 WASHER, AC CORD
8 4-210-301-01 FOOT (B)
*9 4-210-298-01 CHASSIS
!PT302 1-431-939-11 TRANSFORMER, POWER (US, CND)
!PT302 1-431-961-11 TRANSFORMER, POWER (MX, SAF)
!PT302 1-431-962-11 TRANSFORMER, POWER (AUS)
Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks
— 52 — — 53 — — 54 —
6-1. CABINET SECTION
IC601 µPD780205GF (SYSTEM CONTROL) / PANEL BOARD
Description
VDD
Power switch output. ON: H, OFF: L
System mute output. ON: H, OFF: L
Tuner mute output. ON: H, OFF: L
Surround output. ON: H, OFF: L (Not used)
Function tape output. Tape: H, Others: L (Not used)
DBFB normal (U2: DBFB). ON: H, Others: L
DBFB high. ON: H, Others: L (Not used)
Not used
Reset input
X’tal 4.194314 MHz
X’tal 4.194314 MHz
Ground
Not used (open)
Power down input. AC ON: H, AC OFF: L
VDD
CXD2508A SQCK, CLOCK output
CXD2508A data output
CXD2508A SQSO input
CXD2508A XLAT output. Latch: L, Others: H
Chip enable output to LC7218, LC75392. Data: H, Address: L
CLK output
Data output
Data input
Ground
STB output to SN74HC4094. STB: L, Others: H
Flat output. Flat: H, Others: L (Not used)
Ground
Key input 4 toA/D
Key input 3 toA/D
Key input 2 toA/D
Key input 1 toA/D
Key input 0 toA/D
VDD of A/D converter
Reference voltage of A/D converter
Latch output to BU2092. Latch: H, Others: L
Not used
CXD2508A SCOR
Remote signal input. ON: H, OFF: L
Ground
Shift or load output to SN74HC165. Shift: H, Load: L (Not used)
Data input to SN74HC165 (Ground)
STB output to BU2114, SN74HC4094. STB:H, Others: L (Not used)
VR encoder A input. ON:L, OFF: H
VR encoder B input. ON:L, OFF: H
VDD
FM stereo indicator input. Stereo:L, Mono: H
Synchro record input. Record:L, Other: H
CD encoder A input. ON: L, OFF: H (Ground)
CD encoder B input. ON: L, OFF: H (Ground)
• 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.
— 55 — — 56 —
Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks
6-2. FRONT PANEL SECTION
101
102
103 104 105 106 107108
109 110 111
Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks
6-3. CASSETTE BUTTON SECTION
a
a
not supplied
not supplied
not supplied
PT302
not supplied
not supplied
not supplied
CD mechanism deck
3
2
1
98
6
5
7
4
#2 #2
#2 #2
#2
#1
#1
#1
#1
#1
#1
#1
#1
#16
#16
#10
#10
#1
#3
#11
#11
#11
60
69
59
68
58
57
56
82
55
54
53
51 52
75
71
7286
8487 85
62
63
64
#1
#1
#1
not supplied
#1
#1
#1
#1
Cassette mechanism deck
#1
#1
77
78
65
74
73 61
79
81
80
59 66
53
83 67
70
51 4-210-296-01 WINDOW (R), DOOR
52 4-210-294-01 LID (R), CASSETTE
53 4-210-326-01 SPRING, DOOR
54 4-210-295-01 WINDOW (L), DOOR
55 4-210-293-01 LID (L), CASSETTE
56 4-210-319-01 KNOB, VOLUME
57 4-210-300-01 RING, VOLUME
58 4-210-304-01 WASHER, VR
59 4-992-131-01 DAMPER (GRY), GEAR
*60 1-670-392-11 H.P BOARD
*61 1-670-387-11 DISK BOARD
*62 1-670-388-11 SENSOR BOARD
63 1-773-077-11 WIRE (FLAT TYPE) (18 CORE)
*64 A-4414-553-A PANEL BOARD, COMPLETE
*65 1-670-389-11 VR BOARD
*66 1-666-444-11 R/P SWITCH BOARD
67 4-210-307-01 PANEL, FRONT
68 4-962-708-01 EMBLEM (4-A), SONY
69 4-210-308-01 OVERAY, DISPLAY
70 4-210-309-01 WINDOW, DISPLAY
71 4-210-310-01 LENS (A), CD BUTTON
72 4-210-311-01 LENS (B), CD BUTTON
73 4-210-312-01 LENS (C), CD BUTTON
74 4-210-313-01 BUTTON (B), CD
75 4-210-314-01 BUTTON, POWER
76 4-210-315-01 BUTTON, CLOCK
77 4-210-316-01 BUTTON, FUNCTION
78 4-210-317-01 BUTTON, TUNER
79 4-210-318-01 LENS, PLAY
80 4-210-320-01 LENS, BUTTON
81 4-210-321-01 OVERAY, BUTTON
82 4-210-322-01 HOLDER (L), DOOR
83 4-210-323-01 HOLDER (R), DOOR
84 4-210-324-01 HOLDER, CD BUTTON
85 4-210-327-01 BRACKET, TOP CABINET
86 4-210-329-01 FILM, BUTTON LENS
87 4-210-330-01 PLATE, PVC
101 4-210-336-01 BUTTON (L), REC
102 4-210-337-01 BUTTON (L), PLAY
103 4-210-338-01 BUTTON (L), REW
104 4-210-339-01 BUTTON (L), FF
105 4-210-340-01 BUTTON (L), S/E
106 4-210-341-01 BUTTON (L), PAUSE
107 4-210-342-01 BUTTON (R), PLAY
108 4-210-343-01 BUTTON (R), REW
109 4-210-344-01 BUTTON (R), FF
110 4-210-345-01 BUTTON (R), S/E
111 4-210-346-01 BUTTON (R), PAUSE
•Abbreviation
CND : Canadian AUS : Australian
MX : Mexican SAF : South African

— 57 —
6-4. CASSETTE MECHANISM DECK SECTION
160
161
160
158
157
161
154
163
153
154
152
153
152
151
SW202
HE901
HRP901
not supplied
not supplied
not supplied
not supplied
not supplied
not supplied
not supplied
not
supplied
not supplied HP901
SW203
SW204
M901
Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks
151 9-980-286-01 CAP SCREW 2 ×7.5
152 9-980-288-01 A SCREW 2×7 (AZIMUTH)
153 9-980-287-01 B SCREW 2×3
154 9-980-276-01 PINCH ROLLER ARM ASSY
157 9-980-279-01 SCREW M COLLAR
158 9-980-278-01 MOTOR RUBBER
160 9-980-277-01 BELT (W) F
161 9-980-281-01 BELT M
*163 1-759-417-11 DECK, MECHANICAL
HE901 9-980-284-01 E HEAD (ERASE)
HP901 9-980-282-01 P HEAD (PLAY)
HRP901 9-980-283-01 RP HEAD (REC/PLAY)
M901 9-980-285-01 MOTOR (CAPSTAN/REEL)
SW202 9-980-274-01 LEAF SWITCH (A DECK)
SW203 9-980-274-01 LEAF SWITCH (B DECK)
SW204 9-980-275-01 LEAF SWITCH (PLAY)

— 58 —
6-5. CD MECHANISM DECK SECTION 1
Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks
*201 1-670-801-11 MOTOR BOARD
202 3-669-480-11 + PTPWH 2
203 4-992-168-01 TRAY, CHANGER BASE
204 4-992-180-01 PLATE, BLIND
205 4-992-181-01 LEVER, SENSOR (SW)
206 4-992-182-01 SPRING, SENSOR (SW) LEVER
207 4-992-170-01 BELT, LOADING
208 4-992-171-01 PULLEY, GEAR
209 4-992-179-01 GEAR, TR
210 4-992-177-01 GEAR, TR LOCK
211 4-992-178-01 GEAR (C), RELAY
212 4-992-187-01 CUSHION
213 4-992-186-01 CUSHION, SW LEVER
214 4-992-173-01 GEAR (B), RELAY
215 4-992-183-01 SCREW, RELAY GEAR (B)
216 4-992-174-01 GEAR, CHANGE
217 4-992-184-01 WASHER, CHANGE GEAR
218 4-992-176-01 SPRING, CHANGE GEAR
219 4-992-185-01 WASHER, CHANGE PLATE
220 4-992-172-01 GEAR (A), RELAY
*221 4-993-032-01 PLATE, CHANGE
222 4-993-033-01 WASHER, POLY ETHYLENE
*223 1-670-798-11 SW (B) BOARD
*224 1-670-797-11 SW (A) BOARD
*225 4-993-034-01 GUIDE, RAIL
226 4-993-140-01 TURN TABLE
M103 X-4948-765-1 MOTOR ASSY (TURN TABLE)
203
223
204
209
225
225
217
215
219
214
221
211
222
218
216 220
207
210
213
212
208
206
205
201
224
212
226
202
#5
#5
M103
#5
#7
#7
#9