Sony CDC-R937 / CDC-X937 Service Manual ▷ View online
21
21
CDC-R937/X937
4-4. BLOCK DIAGRAM — MAIN SECTION —
(Page 20)
(Page 22)
1
16
AM ANT
J101
(ANTENNA)
2 FM ANT
TUN-RCH
LCH
17
RCH
22
SD/ST IND
TU101
(TUNER UNIT)
AUX-RCH
21
25
SYSTEM CONTROL
IC901
BBE LEVEL SELECT
IC402
ELECTRONIC VOLUME
IC401
20
EVOL CE
EVOL CLO
19
18
BBE SW1 7
BBE SW2
LSELO
BBE OUT
(L)
16
EVOL DO
60
MUTE
22
DSSA CONT
65
POWER MUTE
LEVEL IND
CDC-R937
CDC-X937
CDC-X937
CDC-R937
CDC-R937
CDC-R937
BBEIN
(L)
(L)
LIN
LOUT
L FAD
IN
IN
HPOL
LPOL
MIXL
CONT
CL
CE
DI
MUX
DATA
XOUT
RDS DECODER
IC151
XIN
44 FMOSC
45 AMOSC
47 EO0
39 IF REQ
64 RDS MODE
54 ST IND/SD IN
LOC/DX
X IN
56
ST BY MUTE
59
BEEP
24
PHONE MUTE
23
ACC DET
95
CDS SLEEP
AUX(L)
TUN(L)
CD(L)
41 AM IF
31 FM/AM S METER
42 FM IF
55 ST
11
AM/FM OSC
24
DET OUT
4
2
14
13
6
FM VT
14
AM VT
20
IF COUNT
21
SMETER
3
AM DX/LCL
4
FM DX/LCL
X901
6.3MHz
37
CDS RESET
94
CDS CS
96
CDS CLO
10
CDS DI
8
CDS DO
9
SW2
87
CDS SREQ
79
SW1
86
CD R
CD-RCH
CD L
RESET
PANCON1
84
MOTOR (+)
PANCON2
85
MOTOR (-)
CDS CS
CDS CLO
CDS DCDMS
CDS DMSCD
CDS SRQ
SW1
PANEL SW
89
PANEL SW
SEN2
92
SEN 1
SEN1
91
PHOTO
SW2
36 X OUT
4
LCD DO
6
LCD CE
57
POWER CONT
2
DFP IN
3
LCD DI
5
LCD CLO
28
KEY1
LCD DO
LCD CE
DFP IN
LCD DI
53
RMT IN
REMOTE
LCD CLO
KEY1
29
KEY2
KEY2
69
ILL CONT1
ILL1
70
ILLUM CONT2
ILL2
30
KEY3
KEY3
50
RESET
RESET
61
LED
LED
1
1
BATT IN
2
IN
CD+8V
BU+5V
OUT
BATT
BATT
COM+9V
SW+8V REG
Q831-834
BATT DET
IC971
COM+9V
REG+9V
LED+9V
PON+B
BATT
POWER
CONTROL
Q811,812
80
LAMP CONT
REG+9V
SWITCH
SWITCH
Q732,733
CD IN
LED DRIVE
Q731
+9V REG
IC811
BU+5V
BATT
+5V REG
Q821
ACC DET
D981
ST SWITCH
Q901
LPF(FM)
Q107,108
48 EO1
LPF(AM)
Q105,106
FM+B
FM+B
SWITCHING
Q103
COM+9V
AM+B
AM+B
SWITCHING
Q102
LOCAL
SWITCHING
Q101
BATT
SHUTDOWN
MUTE
Q522
MUTE
CONTROL
Q422,423
J601
AUX IN
FRONT
SECTION
B
CD
SECTION
A
FRONT
SECTION
C
66
FM BAND
67
AM BAND
52
ACC IN
CL
51 RDS CLK IN
16
X151 4.332MHz
SFR101
R133
R125
RDS
63
44
36
62
57
56
4 ST-BY
22 MUTE
RL
FL
11
POWER AMP
IC501
2
CON801
R-CH
FL+
10
FL-
RL+
RL-
3
11
RR+
RR-
4
12
FR+
FR-
+B
7 ACC
+B
R-CH
BATT
PON+B
F901
6 ANT-R
17
19
18
16 BATT
16 AUX IN
L
J401
R
9
7
12
1
9
5
3
MUTE
Q409
AUDIO OUT
REAR
MUTE
Q407
13 TEL MUTE
DSSA CONTROL
Q405
RL(+)
RL(-)
FL(+)
FL(-)
37
41
23
38
78 AUX SW
13
49 51 50
5
58 RDS DI
4
2
1
3
BBE
CCB INTERFACE
EVR
TONE
S BASS
FADER
BBE
SWITCH
BBE CONTROL
Q411
LEVEL AMP
Q421
4
1
3
RLOUT
53
FLOUT
54
1
7
4
5
FLAP
MOTOR
DRIVE
IC721
3
1
• Signal path
: CD
: FM
: AM/LW/MW
: AUX
• R-ch is omitted due to same as L-ch.
(Page 22)
22
22
CDC-R937/X937
THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is
printed in each block.)
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is
printed in each block.)
for schematic diagram:
• All capacitors are in µF unless otherwise noted. pF: µµF
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
and tantalums.
• All resistors are in
Ω
and
1
/
4
W or less unless otherwise
specified.
•
%
: indicates tolerance.
•
f
: internal component.
•
C
: panel designation.
•
A
: B+ Line.
• Power voltage is dc 14.4V and fed with regulated dc power
supply from ACC and BATT cords.
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F
: FM
f
: AM/MW/LW
J
: CD
for printed wiring boards:
• X
: parts extracted from the component side.
• Y
: parts extracted from the conductor side.
•
x
: parts mounted on the conductor side.
•
a
: Through hole.
•
: Pattern from the side which enables seeing.
(The other layer’s patterns are not indicated.)
Caution:
Pattern face side: Parts on the pattern face side seen from the
(Side B)
Pattern face side: Parts on the pattern face side seen from the
(Side B)
pattern face are indicated.
Parts face side: Parts on the parts face side seen from the
(Side A)
(Side A)
parts face are indicated.
Note: The components identified by mark
0
or dotted line
with mark
0
are critical for safety.
Replace only with part number specified.
4-5. BLOCK DIAGRAM — FRONT SECTION —
(Page 21)
(Page 21)
97
98
99
100
LCD DRIVER
IC601
81
P1
LCD601
LIQUID
CRYSTAL
DISPLAY
PANEL
1
I
52
69
I
62
72
•
73
76
I
80
S1
I
S52
KS3
I
KS4
KI1
I
KI5
COM1
I
COM8
82
P2
83
P3
LCD DI
LCD CLO
LCD CE
LCD DO
REG+9V
LED601-603
LED606-609
LED605
LCD
BACK LIGHT
DIMMER
CONTROL
Q610
SW621
JOG SWITCH
KEY
MATRIX
LED
DRIVE
Q611,612
BU+5V
REMOTE CONTROL
RECEIVER
IC602
REG+9V
KEY3
ILL2
KEY1
KEY2
PHOTO
MOTOR (+)
MOTOR (-)
ILL1
LED
LED+9V
LED731
(CD IN)
LED611-616
LED620-622
LED617-619
SW606-617
KEY
MATRIX
LED
DRIVE
Q614
LED
DRIVE
Q615
SW601-603
DI
1
REMOTE
OUT
3
VCC
CLO
CE
CE
DO
DFP IN
MAIN
SECTION
B
MAIN
SECTION
C
SW605
(RESET)
RESET
PANEL SW
SEN 1
SW671
OPEN/CLOSE
DET
SW612
(PANEL DET)
M4
(OPEN/CLOSE)
SENS
PS671
CD+8V
—
Main Board
—
6
4.332MHz
IC151
qd
(XIN)
1.2Vp-p
7
6.3MHz
IC901
ej
(X1)
1.4Vp-p
• Waveforms
— Servo Board —
(MODE: CD PLAY)
1
IC221
wg
(RFGO)
1.3Vp-p
2
3
Approx. 200mVp-p
IC221
4
(FNI)
0V
4
5
16.9344MHz
IC241
ul
(XO)
1.4Vp-p
Approx. 180mVp-p
IC221
5
(FPI)
0V
Approx. 600mVp-p
IC221
qf
(TEO)
0V
23
23
CDC-R937/X937
• Refer to page 22 for Waveforms.
4-6. SCHEMATIC DIAGRAM — CD MECHANISM SECTION — • Refer to page 34 for IC Block Diagrams.
Note:
• Voltage is dc with respect to
ground under no-signal conditions.
no mark : CD PLAY
no mark : CD PLAY
∗
: Impossible to measure
(Page 29)
IC B/D
IC B/D
TP16
TP17
TP18
TP01
TP02
TP02
TP03
TP04
TP05
TP04
TP05
TP06
TP07
TP07
TP08
TP09
TP10
TP09
TP10
TP11
TP12
TP12
TP13
TP14
TP15
TP14
TP15
TP20
TP27
TP28
TP29
TP30
TP36
TP37
TP38
TP39
TP40
TP41
TP8V
TPG3
TPG4
R238
R245
R246
R247
R
249
R250
R254
R255
R202
R203
R204
R227
R233
R235
R236
R236
L221
TC201
L241
R212
R211
C203
C202
C221
C222
C225
C230
C229
C228
C234
R213
R214
R207
C259
C260
C241
C242
C252
R251
C254
R243
C279
C237
C262
C263
C246
C245
C201
C268
C270
C275
C273
C273
C274
C278
TP19
TP25
TP21
TP22
TP23
TPG6
TPG5
R201
R210
R298
R299
C233
R222
C232
R224
R223
R221
R229
R230
C224
R225
C223
JR203
C227
R206
R205
R226
R240
C226
C298
R215
R237
R239
R241
L242
JR201
TP26
C250
C261
C265
R244
C264
C258
C247
TP5V
R257
R258
JR102
R256
R248
R253
C271
TP31
TPG2
TPG1
TP32
TP33
TP34
TP35
C269
C253
CON201
C284
C283
C235
R231
Q221
Q201
X241
M2
M1
IC201
IC221
S1
S2
IC241
C251
C248
S3
S4
R209
R208
Q202
C272
R281
C281
C282
R282
R252
C243
C244
24
24
CDC-R937/X937
4-7. PRINTED WIRING BOARDS — CD MECHANISM SECTION — • Refer to page 19 for Circuit Boards Location.
1
A
B
C
D
E
F
G
H
I
J
2
3
4
5
6
7
8
9
10
11
12
13
14
Q201
C203
C201
C235
C233
C234
C298
C265
X241
C278
C269
C270
C226
C250
C241
C251
C242
C283
C284
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