Sony Xplod CDX-737 User manual
MICROFILM
SERVICE MANUAL
COMPACT DISC CHANGER
SPECIFICATIONS
CDX-737
US Model
Canadian Model
AEP Model
UK Model
E Model
Model Name Using Similar Mechanism NEW
CD Drive Mechanism Type MG-250D-137
Optical Pick-up Name KSS-521A/J2N
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TEL 13942296513 QQ 376315150 892498299
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2
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!
LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE 0
SUR LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE
DES PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ
DE FONCTIONNEMENT. NE REMPLACER CES COM-
POSANTS QUE PAR DES PIÈCES SONY DONT LES
NUMÉROS SONT DONNÉS DANS CE MANUEL OU
DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK 0OR DOTTED
LINE WITH MARK 0ON 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 PUB-
LISHED BY SONY.
TABLE OF CONTENTS
1. SERVICING NOTES ................................................ 3
2. GENERAL ................................................................... 3
Installation....................................................................... 4
Connections ..................................................................... 4
3. DISASSEMBLY ......................................................... 5
4. MECHANISM DECK ASSEMBLY.................... 11
5. MECHANICAL ADJUSTMENTS....................... 13
6. ELECTRICAL ADJUSTMENTS......................... 14
7. DIAGRAMS
7-1. Block Diagram – SERVO Section –............................... 16
7-2. Block Diagram – MAIN Section – ................................. 17
7-3. Block Diagram
– BUS CONTROL/POWER SUPPLY Section – ........... 18
7-4. Note for Printed Wiring Boards and
Schematic Diagrams ....................................................... 19
7-5. Printed Wiring Boards – RF/SW Boards –..................... 20
7-6. Schematic Diagram – RF/SW Boards – ......................... 21
7-7. Printed Wiring Boards
– MAIN Board (Component Side) – .............................. 22
7-8. Printed Wiring Board
– MAIN Board (Conductor Side) – ................................ 23
7-9. Schematic Diagram – MAIN Board (1/2) – ................... 24
7-10. Schematic Diagram – MAIN Board (2/2) – ................... 25
7-11. Printed Wiring Boards – JACK Board – ........................ 26
7-12. Schematic Diagram – JACK Board –............................. 26
7-13. IC Pin Function Description ........................................... 33
8. EXPLODED VIEWS ................................................ 36
9. ELECTRICAL PARTS LIST ............................... 41
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33
SECTION 1
SERVICING NOTES
NOTES ON HANDLING THE OPTICAL PICK-
UP BLOCK OR BASE UNIT
The laser diode in the optical pick-up block may suffer electro-
static breakdown because of the potential difference generated by
the charged electrostatic load, etc. on clothing and the human body.
During repair, pay attention to electrostatic breakdown 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.
Laser Diode Properties
• Material: GaAlAs
• Wavelength: 780 nm
• Emission Duration: continuous
• Laser Output Power: less than 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.
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous ra-
diation exposure.
Flexible Circuit Board Repairing
• Keep the temperature of the soldering iron around 270 ˚C dur-
ing 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.
Notes on chip component replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
SECTION 2
GENERAL This section is extracted from
instruction manual.
DISC MAGAZINE GETTING OUT PROCEDURE
ON THE POWER SUPPLY IS OFF
Remove the CASE (LOWER) assembly beforehand
1) Press the lever (ML) assy to arrow direction.
2) Removal the magazine assy.
Note: Take out the magazine only when the tray is completely within the
magazine. If the disk or tray is sticking out, turn on the power and
eject the magazine.
Magazine ass’y
Lever (ML) ass’
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5
Note: Follow the disassembly procedure in the numerical order given.
SECTION 3
DISASSEMBLY
COVER (UPPER T), FRONT PANEL ASS’Y
MECHANISM DECK (MG-250D-137)
1
screw
(PTT2.6
×
6)
1
screw
(PTT2.6
×
6)
2
cover (upper T)
1
screw
(PTT2.6
×
6)
1
screw
(PTT2.6
×
6)
1
screw
(PTT2.6
×
6)
3
lever (FLT)
3
lever (FLT)
4
front panel (T) ass’y
2
tension spring (FL)
2
tension spring (FL)
1
two dampers (250)
1
two dampers (250)
3
jack flexible board
(CNJ901)
4
mechanism deck (MG-250D-137)
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6
JACK BOARD
MAIN BOARD
Remove the jack board
in the direction of the arrow.
1
ground point screw
(PTT2.6
×
6)
2
jack board
1
main flexible board
(CNJ12)
6
three screws (FP)
7
main board
2
Break the soldering
of motor (M104) lead.
3
screw
(PTT2
×
4)
4
heat sink
5
two precision screws
(P1.7
×
2.5)
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7
ELEVATOR MOTOR ASS’Y (M104)
ESCUTCHEON
1
screw
(PTT2
×
3)
2
bracket (EVM)
3
elevator motor ass’y
(M104)
2
Remove the claw
in the direction
of the arrow
A
.
4
Remove the ditch
in the direction
of the arrow
B
.
A
B
5
Remove the escutcheon
in the direction of the arrow
C
.
4
ditch
3
claw
C
3
two claws
1
screw
(M2
×
3)
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8
CASE (UPPER) ASS’Y
CHASSIS ASS’Y
1
three screws
(PTT2
×
4)
1
two screws
(PTT2
×
4)
2
4
Remove the case
(upper) ass’y
in the direction
of the arrow
B
.
3
Remove the edge in the directio
n
of the arrow
A
.
1
screw
(PTT2
×
4)
A
B
3
chassis ass’y
1
two polyethylene washer
s
2
2
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9
RF BOARD
SLED MOTOR ASS’Y (M102), OPTICAL PICK-UP (KSS-521A/J2N)
4
3
two screws
(PS2
×
4)
5
connector
(CNP53)
7
RF board
3
two screws
(PS2
×
4)
1
OP flexible board
(CNJ11)
2
Break the soldering
of motor (M102) lead.
6
Break the soldering of lead.
1
two screws
(ESCUTCHEON)
4
Turn at the direction of the
arrow, then remove
shaft (sled) ass’y
2
sled motor ass’y
(M102)
3
optical pick-up
(KSS-521A/J2N)
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10
SW BOARD, SPINDLE MOTOR ASS’Y (M101)
CHUCKING MOTOR ASS’Y (M103)
8
two screws
(P1.7
×
2.2)
7
3
spring (chucking)
6
retainer (disc
)
4
screw
(P2
×
2.2)
5
bracket (CP)
9
Remove the spindle motor ass’y (M101)
in the direction of the arrow.
2
SW board
1
screw
(P2
×
2.2)
1
Break the soldering
of motor (M103) lead.
2
two screws (P2
×
2.5)
4
chucking motor ass’y
(M103)
3
retainer (CHM)
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11
OPTICAL PICK-UP COMPLETE ASS’Y
GEAR (LOMINI) / (LOAD CAM) ASS’Y
Note: Follow the assembly procedure in the numerical order given.
SECTION 4
MECHANISM DECK ASSEMBLY
chuck plate
1
Move the lever (LOCK 3) in direction
A
, and return it a little in
direction
B
from the position where the chuck plate is moved
down to the lower limit.
A
B
4
stop ring 2.0 (E type
)
5
tension spring (DH)
2
washer 2.5
3
optical pick-up complete ass’y
Note: Insert the shaft (A) first.
shaft (A)
gear (LOAD 2)
gear (LOMINI)
marking
Fig. A
chuck plate
2
Attach the gear (LOMINI) at the position
shown in Fig.A.
shaft (rotary prevention C)
1
Move the lever (LOCK 3)
fully in direction
B
to
move the chuck plate up.
B
4
stop ring 1.5 (E type)
3
Attach the gear (LOAD CAM) ass’y
with its facing inside.
slit
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12
OPERATION CHECK
1
Confirm that the slider moves in direction
C
to move down
the chuck plate if the gear (LOAD CAM) is rotated in direction
A
or
the chuck plate moves up and the slider moves in direction
D
if the
gear is rotated in direction
B
.
chuck plate
slider
gear (LOAD CAM) ass’y
AB
C
D
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13
SECTION 5
MECHANICAL ADJUSTMENTS
• Elevator Height (Address) Adjustment
Note: This adjustments is necessary when the system controller (IC201),
variable resistor (RV201), slider (R), slider (L), or chassis (ELV)
was replaced for any repair.
Connection:
Adjustment Method:
1. Connect this set to the master unit (e.g. MDX-C7970/C7970R),
load a disc magazine, and place the set vertically as shown
below.
2. Connect the regulated power supply to the master unit, and
turn the power on.
3. Press the DISC button on the master unit and select DISC 5.
4. At this time, if the elevator shaft does not position between
comb teeth A and B at addresses 5 and 6 as shown below,
adjust the following.
5. Press repeatedly the DISC + and – buttons on the master unit
so that the elevator shaft moves from address 6 to address 5, or
from 5 to 6. At this time, adjust RV201 on the main board so
that the elevator shaft positions smoothly between comb teeth
A and B.
6. Further, place the set horizontally and make same adjustment
as mentioned above.
7. After adjustment at addresses 5 to 6 is finished, check all op-
erations from addresses 1 to 10 with the set placed vertically
and horizontally respectively to confirm that the elevator shaft
positions in a range between comb teeth A to B.
power supply
GND
+
BUS cable
CDX-737
master unit
comb tooth at address 6
elevator shaft
comb tooth at address 6
comb tooth at address 5
RV201
OK NG
elevator shaft
comb tooth at address
5
A
B
A
B
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14
SECTION 6
ELECTRICAL ADJUSTMENTS
Note:
1. Perform adjustments as given.
2. Power supply voltage: DC14.4 V (more than 3A).
• FOCUS BIAS CHECK
– RF BOARD (Conductor Side) –
Procedure:
1. Connect the oscilloscope to TP (RF) and TP (VC) on the RF
board.
2. Put the set into play mode by loading the disc.
3. 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 distin-
guished at the center of the waveform.
•TRACKING OFFSET CHECK
– RF BOARD (Conductor Side) –
Procedure:
1. Connect the oscilloscope to BP11 (TE) and TP (VC) on the
RF board.
2. Put the set into play mode by loading the disc.
3. Press the .AMS >button, and check the traverse wave-
form*.
4. Confirm that the oscilloscope waveform is symmetrical on the
top and bottom in relation to 0 V dc, and check this level.
* Traverse waveform: This is the tracking error wave form appears
when crossing the track.
TP
(VC) IC11
IC51
CNJ12
TP (RF)
oscilloscope
+
–
RF signal waveform
VOLT/DIV: 200 m
V
TIME/DIV: 500 ns
level: 1.4
±
0.3 Vp-p
TP
(VC) IC11
IC51
CNJ12
BP11
(TE)
oscilloscope
+
–
A
B
0 V
A=B
traverse waveform
(100 track jump waveform)
VOLT/DIV : 500 mV
TIME/DIV : 2 ms
Center : 0 V
Traverse waveform
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1515
• FOCUS GAIN ADJUSTMENT
(COARSE ADJUSTMENT)
This adjustment is to be performed when replacing the following
parts.
• Optical Pick-up Block
• RV14
– RF BOARD (Conductor Side) –
Procedure:
1. Set RV14 (RF board) to the standard position.
2. Check that there is not an abnormal amount of operation noise
(white noise) from the 2-axis devise. If there is, turn RV14
slightly clockwise.
– RF BOARD (Conductor Side) –
• When gain is lowered...
The set does not play because of no focus operation.
• When gain is highered...
Operation noise is heard due to a scratch or a dust, then opera-
tion will be unstable.
RV14 IC11
IC51
CNJ12
MIN side
(low gain)
MAX side
(high gain)
RV14 standard position
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TEL 13942296513 QQ 376315150 892498299
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1616
CDX-737 SECTION 7
DIAGRAMS
7-1. BLOCK DIAGRAM – SERVO Section –
XROF
M
M
M
A
B
D
F
E
C
I-V AMP
DETECTOR
39
38
2
1
12
13
27
OUT+
OUT– SLO
OUT–
OUT+
OUT+
OUT–
SPINDLE
MOTOR DRIVE
M101
(SPINDLE)
SLED
MOTOR DRIVE
26
M102
(SLED)
FOCUS
COIL DRIVE
TRACKING
COIL DRIVE
OUT+
OUT– 19
24
4
10
IN
IN
IN
IN
SLP
FOCUS/TRACKING COIL DRIVE,
SPINDLE/SLED MOTOR DRIVE
IC51
16 14
SLED
AMP
LD
PD
LASER DIODE
OPTICAL PICK-UP
BLOCK
(KSS-521A)
2-AXIS
DEVICE
(FOCUS)
(TRACKING)
33
32
27
44
23
22
20
21
19
23
RF AMP,
FOCUS/TRACKING
SERVO
IC11 (1/2)
FOCUS OK
COMPARATOR
MIRR
AMP
DEFECT
AMP
FOCUS OK
AMP
IIL DATA REGISTER
4038
FILTER
42
39
FILO
PCO
CLTV
FILI
DIGITAL PLL
ASYMMETRY
CORRECTION
EFM
DEMODULATOR
DIGITAL
OUT
ERROR
CORRECTOR
16K
RAM
INTERNAL BUS
SUB-CODE
PROCESSOR
SERVO AUTO SEQUENCER
DIGITAL CLV
17
15
52
54
50
100
16
WDCK
8 7 9 10 12 11 75 76 77 6126 28
14
13
1
7
4
5
4
5
CH.F
CH.R
CHUCKING
MOTOR DRIVE
CHUCKING MOTOR DRIVE
IC52
FIN
RIN
OUT1
OUT2
SW11
(CHUCKING END DETECT)
LOAD1
LOAD2
SW12
(SAVE END DETECT)
SW1
(LIMIT)
M103
(CHUCKING)
41
42
36
37
1
40
45
2
47
17
16
6
25
24
13
+
PD1
PD1 I-V AMP
RFO RF
46 ASYI
47 ASYO
FOK
DATO
CLKO
XLTO
SEIN
CNIN
C.OUT
FOK
SUBQ
SCLK
SENS
CD.DATA
CD.CLK
CD.XLT
SCOR
MON
MDP
MDS
29
LOCK
64
SQSO
SQCK
SENS
DATA
CLOCK
XLAT
SCOR
SBSO
EXCK
GFS
GTOP
WFCK
EMPH
C4M
XRST
RFI
FOK
DATA
CLK
SENS1
26
SENS2
C.OUT
XLT
LOCK
XRST
PD2 I-V AMP
PD2
TTL
IIL
FEO
TEO
PD
FEI FEO
TAO
TEI
TTL
IIL
TTL
IIL
FOCUS
ERROR
AMP
RF
SUMMING
AMP
TRACKING
ERROR
AMP
TRACKING PHASE
COMPENSATION
FOCUS PHASE
COMPENSATION
AUTOMATIC
POWER CONTROL
Q11
I-V
AMP
LD
AMP
PD
AMP
FE BIAS
RV14
F
E
LD
89
XTAI
PCMD
71
D.OUT
BCKO
LRCK
63
C2PO 62
49
RFCK RFCK
PCMD
BCK
LRCK
WDCK
A
XRST RESET
ON : When completion of the disc
chucking operation.
ON : When the optical pick-up
is inner position.
SLED SERVO
IC11 (2/2)
05
DIGITAL SIGNAL PROCESSOR,
CLV SERVO
IC101
SYSTEM CONTROLLER
IC201 (1/3)
ON : When completion of the disc
chucking operation.
• SIGNAL PATH
(Page 17)
(Page 17)
(Page 17)
: CD PLAY
27
FOCUS
GAIN
CPU INTERFACE
D/A
INTERFACE
CLOCK
GENERATOR
EDGE DETECT
IC403 (1/2)
70
74
72
58
1
27
IC403
(2/2)
GTOP
WFCK
C4M
XROF
SCLK
SBSO
C16M
22
SENS2
8
54 52
51
23
67
65
66
63
GFS 24
21
C
E
(Page 17)
(Page 17)
D
RFCK, GTOP, WFCK,
C4M, XROF,
PCMD, BCK,
LRCK, WDCK
(Page 17)
B
H
SCOR (Page 17)
G
DATA, CLOCK
DATA
CLOCK (Page 17)
F
LIM.SW 9
7
6
w
w
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x
i
a
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1
6
3
.
c
o
m
Q
Q
3
7
6
3
1
5
1
5
0
9
9
2
8
9
4
2
9
8
T
E
L
1
3
9
4
2
2
9
6
5
1
3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
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1717
CDX-737
7-2. BLOCK DIAGRAM – MAIN Section –
11
9
12
13
7
6
5
3
8
61
47 48 46 50
2946
76
77
25 27
45 44 49 59
16
19
17
18
20
A
B
PCMD, BCK,
LRCK, WDCK PCMD
BCK
LRCK
WDCK
DATI
BCKI
LRCI
WDCI
4DIN
RFCK
WFCK
XROF
C4M C4M
XROI
SCOR
RFCK
GTOP
RFCK, GTOP, WFCK,
C4M, XROF
WFCK WFCK
2
31, 30, 33, 32
1, 2, 24, 25
25 – 22, 40 – 36, 27
9 – 12, 14 – 18, 5
DSP
INTERFACE
DATA
LINKING
CONTROL
SELECTOR
D-RAM INTERFACE
READ/WRITE
BASE
COUNTER
VWA
ADDRESS MONITOR
CPU INTERFACE
SDTI
1
GRST
60
GSCR
SCK
DATA
GRSCOR
79
CSI
78
CSO
77
7 6 5
CCLK
CSI
76
REQ
74
BUSY
4 56
BUSY
CCLK
SCOR
WFCK
8
9
SCLK
SSI
SDTI
41 42 28 26
CLOCK
SDTO
XLT
XRDE
XWRE
XSOE
XQOK
SYSTEM CONTROLLER
IC201 (2/3)
DIGITAL FILTER, D/A CONVERTER,
LOW-PASS FILTER
IC601
05
CD TEXT DECODER
IC501
D-RAM
IC402
S-RAM
IC502
A0 – A9
D1 – D4
XTAI
TIMING
GENERATOR
D/A
CONVERTER
INTERFACE
SERIAL
INPUT
INTERFACE
TIMING
GENERATOR
CPU
INTERFACE
OSC
MUTING
CONTROL SWITCH
Q601, 602
MUTING
Q610
LOW-PASS
FILTER
DIGITAL
FILTER
CIRCUIT
∆Σ
MODULATOR
CIRCUIT
DATA
D OUT
BCK
LRCK
DATA
BCK
LRCK
MCK
D-RAM CONTROLLER
IC401
DIGITAL
OUT
(Page 16)
D
SCLK
IC503
SBSO
(Page 16)
E
(Page 16)
G
SCOR
(Page 16)
F
DATA, CLOCK
(Page 16)
H
(Page 16)
(Page 16)
C
C16M (Page 16)
I
(Page 18)
J
BU CHECK (Page 18)
RESET XRST
35
29
34
28
22
3
23
4
20 27
62 63
XRAS
XCAS
XWE
XOE
XRAS
D1 – D4 A0 – A9
11 – 13, 15 – 1910 – 3, 25, 24, 21, 23, 2, 26, 1
11 – 18, 64 – 69, 74
DO0 – DO7
20 – 27
DATA0 – DATA7
A0 – A14
ADD0 – ADD14
XCAS
XWE
CE CE
WE
WE
XOE
ESPXLT
XRDE
XWRE
XSOE
XQOK
GRSRT
• SIGNAL PATH
: CD PLAY
CSO
REQ
BUCK
D501
X601
16.9344MHz
RO
LO
XTAL
EXTAL
HS
EMP
EMP
ML
XO
XI
28
78
21 19
4445
A.MUTE
43
RESET
75
16 15
9
5
22
23
24
13
X501
10MHz
30 29
MUTING
Q620
R
L
CN901 (1/2)
AUDIO OUT
RST
GTOP
RESET
w
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x
i
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o
y
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1
6
3
.
c
o
m
Q
Q
3
7
6
3
1
5
1
5
0
9
9
2
8
9
4
2
9
8
T
E
L
1
3
9
4
2
2
9
6
5
1
3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
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1818
CDX-737
7-3. BLOCK DIAGRAM – BUS CONTROL/POWER SUPPLY Section –
2
13
87
69
3132
30
I
B.UP
DATA
CLK
BUSON
RST
SCK
SO
SI
68
61
BU.CHK
CD.ON
MAG.SW
MGLK
BUS.ON
W.UP
EJECT
EXTAL
XTAL
7
5
4
6
2
REGULATOR
Q303
+5V
REGULATOR
Q307
MICON +5V
MICON +5V
RESET SIGNAL
GENERATOR
IC304
X201
8MHz
SERVO +5V,
DAC +5V
MICON +5V
MICON +5V
RST
05
SYSTEM CONTROLLER
IC201 (3/3)
(Page 17)
J
BU CHECK (Page 17)
LEVEL SHIFT
D307
BATTERY
CHECK
Q301, 302
D308
D306
+9V
REGULATOR
Q309
REGULATOR
CONTROL SWITCH
Q308
REGULATOR
CONTROL SWITCH
Q306
REFERENCE VOLTAGE
SWITCH
Q201
LINEAR POSITION
SENSOR
SERVO +9V
D311
12
1
4
11
9
6
10
M
1
7
4
5
70
58
ELV.R
ELV.F
ELEVATOR
MOTOR DRIVE
EEPROM
IC202
ELEVATOR MOTOR DRIVE
IC301
FIN
RIN
5
6
12
11
EE.DATA
EE.CLK
SDA
SCL
OUT1
OUT2
M104
(ELEVATOR)
ELV.ON
MCK
RV201
ELEVATOR HEIGHT
SENSOR
RV202
38
EHS 39
AVREF 37
RESET
SWITCH
RST
BUSON IN
CLK
DATA
LOF
SCK
SO
SI
BUSON OUT
BUSON OUT
RESET
55
48
50
49
62
64
SW301
Z
57
SW201
MAGAZINE DETECT
SW202
MAGAZINE IN/OUT
DETECT
BUS INTERFACE
(FOR SONY BUS)
IC302
60
CN901 (2/2)
(FOR SONY BUS)
CONTROL
RESET
w
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3
.
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3
7
6
3
1
5
1
5
0
9
9
2
8
9
4
2
9
8
T
E
L
1
3
9
4
2
2
9
6
5
1
3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
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TEL 13942296513 QQ 376315150 892498299
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1919
7-4. NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS
Note on Printed Wiring Board:
•X: parts extracted from the component side.
•Y: parts extracted from the conductor side.
•z:Through hole.
•b: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
Caution:
Pattern face side: Partsonthe pattern faceside seen from
(Conductor Side) the pattern face are indicated.
Parts face side: Parts on the parts face side seen from
(Component Side) the parts face are indicated.
Note on Schematic Diagram:
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in Ωand 1/4W or less unless otherwise
specified.
•f: internal component.
•C: panel designation.
•U: B+ Line.
•H: adjustment for repair.
• Powervoltageisdc 14.4V andfed with regulateddc power
supply from CD changer controller.
• Voltages and waveforms are dc with respect to ground
under no-signal conditions.
no mark : CD PLAY
∗: Impossible to measure
• Voltages aretakenwithaVOM (Input impedance10MΩ).
Voltage variations may be noted due to normal produc-
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
J: CD PLAY
Note:
The components identi-
fied by mark 0or dotted
line with mark 0arecriti-
cal for safety.
Replace only with part
number specified.
Note:
Lescomposants identifiés par
une marque 0sont critiques
pour la sécurité.
Ne les remplacer que par une
pièce portant le numéro
spécifié.
w
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.
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1
6
3
.
c
o
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Q
Q
3
7
6
3
1
5
1
5
0
9
9
2
8
9
4
2
9
8
T
E
L
1
3
9
4
2
2
9
6
5
1
3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
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http://www.xiaoyu163.com
http://www.xiaoyu163.com
2020
CDX-737
C52
C60
C59
R62
R63
C55
R57
R58
R65
R56
C54
R61
C21
R30
R64
C31
C38
C34
R40
C26
C39
C12
C19
C18
C10
CNP53
C56
C58
C57
IC52
1-676-014-
11
(11)
RF BOARD (COMPONENT SIDE)
R51
R53
C51
R52
R54
R31
R60
R32
RV14
C22
C24
R39
C28
R37
C25
R34
C29
R41
C35
R47
R42
R43
R45
C37
R46
C36
R44
IC11
C43
C17
C16
C14
R25
R18
R26
C15 R17
R59
C53
R50
C42
C41
R55
R49
R27
C32
C30
C27
C33
R38
R36
R35
R48
R14
R11
R22
R16
C40
R28
C23
R33
R12
R13
BCE
C13
CNJ11
Q11
1-676-014-
11
(11)
RF BOARD (CONDUCTOR SIDE)
IC51
CNJ12
SW1
(LIMIT)
SW BOARD
1-664-104- 11
(11)
M101
(SPINDLE) A
MAIN
BOARD
OPTICAL PICK-UP
BLOCK
(KSS-521A)
OP FLEXIBLE BOARD
1-664-626- 11
SW11
CHUCKING END
DETECT
SW12
SAVE END
DETECT
1234567891011
A
B
C
D
E
F
G
H
I
J
+
1
2
BLU
YEL
YEL
BLU
+
+
+
+
85
14
17
1
+
3927
40
52
1
13
14
26
1
26
14
87
1
28 22 21 15
M
MAIN FLEXIBLE BOARD
1-679-339- 11
BP12 (FE)
TP
(VC)
TP
(FE0)
BP11 (TE)
TP (TE1)
TP
(RF)
TP (GND)
05
• Semiconductor
Location
Ref. No. Location
IC11 D-7
IC51 B-9
IC52 H-4
Q11 E-8
7-5. PRINTED WIRING BOARDS – RF/SW Boards –
(Page 22)
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1
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1
5
0
9
9
2
8
9
4
2
9
8
T
E
L
1
3
9
4
2
2
9
6
5
1
3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
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