Sony CDC-R937 / CDC-X937 Service Manual ▷ View online
33
33
CDC-R937/X937
R605
R610
R619
R611
R627
TP113
TP131
TP112
TP109
TP110
TP107
TP114
TP111
TP101
TP108
C615
C602
C616
C614
C606
C607
C608
C609
R606
R607
R608
R609
C605
C604
C612
R626
R613
R614
TP106
TP104
TP103
TP102
TP105
SW621
TP132
CON601
C610
C611
C613
R620
R622
R618
R617
R624
R616
LED608
LED609
SW602
SW601
SW603
R604
R601
R602
R612
R621
R623
LCD601
IC601
Q610
Q611
Q612
M4
SW672
CNA671
DZ601
DZ602
LED601
LED602
LED603
LED605
LED606
LED607
IC602
DZ603
SW671
PS671
LED731
DZ604
R637
R638
R639
C643
C642
C641
DZ607
DZ610
DZ606
C637
C636
R631
R633
DZ608
R634
R635
R636
R603
C645
DZ614
JR601
C603
C638
C639
C640
4-14. SCHEMATIC DIAGRAM — FRONT SECTION —
Note:
• Voltage is dc with respect to ground under no-signal
conditions.
no mark : FM
no mark : FM
∗
: Impossible to measure
(Page 29)
(Page 29)
(Page 29)
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34
CDC-R937/X937
IC201 LA6557H-TE-L (SERVO Board)
4-15. IC BLOCK DIAGRAMS
IC151 SAA6579T-T (MAIN Board)
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
TEST LOGIC AND OUTPUT
SELECTOR SWITCH
CL
T57
XOUT
XIN
GND
VDD
MODE
TEST
QUAL
RDDA
VREF
MUX
GND
VP1
VDD
SCOUT
CIN
QUALITY BIT
GENERATOR
OSCILLATOR
AND
DIVIDER
RECONSTRUCTION
FILTER
57kHz
BANDPASS
(8TH ORDER)
CLOKED
COMPARATOR
COSTAS LCOP
VARIABLE AND
FIXED DIVIDER
FIXED DIVIDER
DIFFERENTIAL
DECODER
CLOCK REGENERATION
AND SYNC
REFERENCE
VOLTAGE
BIPHASE
SYMBOL
SYMBOL
DECODER
ANTI-
ALIASING
FILTER
IC401 LA2657M (MAIN Board)
IC221 TA2153FN (SERVO Board)
1
2
3
4
6
7
8
9
10
11
12
13
14
15
16
17 18
19
20
21
22
26
27
28
29
30
31
32
23
24
25
64
63
62
61
60
59
54
53
52
51
50
49
57
58
56
55
5
48
47
46
45
43
42
41
40
39
38
37
35
34
33
44
36
BBE
SW
VREF
BBE
BBE
AUX(L)
CH(L)
TUNE(L)
CD(L)
CH(R)
TUNE(R)
CH(R)
AUX(R)
VREF
NC
RSELO
RIN
RTRE
RBASS
NC
NC
RSB
ROUT
R FAD IN
VCC(BBE)
VREF
CONT
GND
BBE IN(R)
NC
CBPR
RC3
HPOR
CLPR
LPOR
NC
NC
NC
CLPL
HPOL
LC3
CBPL
NC
NC
LSELO
LIN
LTRE
LBASS1
LSB
LBASS2
LOUT
NC
RL OUT
DI
CE
CL
L FAD IN
VSS
FL OUT
VDD
RROUT
FROUT
BBE IN(L)
LPOL
MIXR
BBE OUT(L)
MIXL
BBE OUT(R)
RBASS2
FADER
CCB INTERFACE
FADER
TONE
S BASS
TONE
S BASS
EVR
F-SW
V REF
F-SW
EVR
28
27
26
25
24
23
22
1
2
3
21
20
19
18
17
16
15
SIGNAL
SYSTEM
POWER
MUTE
INPUT
LEVEL SHIFT
LEVEL SHIFT
LEVEL SHIFT
LEVEL SHIFT
OUTPUT
CONTROL
THERMAL
SHUTDOWN
4
5
6
7
8
9
10
11
12
13
14
REV
VCC2
V05-
V05+
V04+
V04-
V03+
V03-
V02+
V02-
V01+
V01-
VCC1
VIN1
VIN1G
FWD
S-GND
MUTE
VCC-S
VREF-IN
REG-OUT
REG-IN
VIN3G
VIN3
VIN2G
VIN2
VIN4
VIN4G
TAB2
TAB1
CH1
CH2
CH3
CH4
CH5
CH1,2
POWER
CH3,4,5
POWER
POWER
30
29
28
25
27
26
24
23
22
21
20
19
18
16
17
1
2
3
6
4
5
7
8
9
10
11
12
13
14
15
PEAK BOTTOM
3
STATE
DET.
AGC
AMP
I
I
I-I
I-I
FEO
FEN
SEB
RFRP
BTC
RFCT
RFRPIN
RFGO
GVSW
AGCIN
RFO
RFN2
GND
PKC
VRO
SBAD
TEO
TEN
TEB
SEL
LDD
TNI
TPI
FPI
FNI
GMAD
VCC
RFGC
MDI
2VRO
I(3/4)
I(1/4)
I(3/4)
I(1/4)
35
CDC-R937/X937
IC501 TA8272H (MAIN Board)
15
4
19
17
23
21
9
7
5
3
18
14
11
12
10
24
8
2
16
25
1
6
20
13
22
V REF
PRE GND
FR(-) GND FR(+)
RR(-) GND RR(+)
RL(+) GND RL(-)
FL(-) GND FL(-)
AUX IN
DIAGNOSIS
OUT
OUT
VDD
MUTE ST-BY
FR
RR
RL
FL
VDD
TAB
IC402 BU4066BCF (MAIN Board)
14
VDD
VDD
13
C1
12
C4
11
I/O4
10
O/I4
1
2
5
6
7
3
4
9
O/I3
8
I/O3
I/O1
O/I1
O/I2
I/O2
C2
C3
VSS
36
CDC-R937/X937
SECTION 5
EXPLODED VIEWS
Ref. No.
Part No.
Description
Remark
5-1. CHASSIS SECTION
Ref. No.
Part No.
Description
Remark
NOTE:
• The mechanical parts with no reference
number in the exploded views are not supplied.
• Items marked “*” are not stocked since
they are seldom required for routine service.
Some delay should be anticipated
when ordering these items.
Some delay should be anticipated
when ordering these items.
• -XX and -X mean standardized parts, so
they may have some difference from the
original one.
original one.
• Color Indication of Appearance Parts
Example :
KNOB, BALANCE (WHITE) ... (RED)
Parts Color Cabinet’s Color
• Accessories are given in the last of this
parts list.
R
R
1
3-252-454-01 SHEET (PWB)
2
3-376-464-11 SCREW (+PTT 2.6X6), GROUND POINT
3
3-253-025-01 SCREW (TH2.6X4)
4
3-252-376-01 BASE (AROUND)
5
3-253-024-01 SCREW (M2.6X3)
6
A-3274-801-A MAIN BOARD, COMPLETE (X937)
6
A-3274-807-A MAIN BOARD, COMPLETE (R937)
7
1-776-207-41 CORD (WITH CONNECTOR) (POWER) (X937)
7
1-776-527-82 CORD (WITH CONNECTOR) (ISO) (POWER)
(R937)
8
3-251-053-01 BRACKET (CD)
9
3-250-551-01 SCREW (+PTP 2.6X4)
10
3-249-422-01 HOLDER (CD MECHA)
11
3-251-495-01 SCREW (2.6X8)
F901
1-532-877-11 FUSE (BLADE TYPE) (AUTO FUSE) 10A
TU101
1-693-609-11 TUNER UNIT (X937)
TU101
1-693-611-11 TUNER UNIT (R937)
#1
7-685-792-09 SCREW +PTT 2.6X6 (S)
#2
7-685-793-09 SCREW +PTT 2.6X8 (S)
#3
7-682-150-01 SCREW +P 3X12
#6
7-685-791-09 SCREW +PTT 2.6X5 (S)
A
A
F901
#1
#2
#3
MG-930B-185
#6
#1
TU101
not
supplied
not supplied
not supplied
not supplied
3
3
4
5
5
6
2
3
8
9
3
3
7
9
9
9
1
9
10
11
The components identified by
mark 0 or dotted line with mark
0 are critical for safety.
Replace only with part number
specified.
mark 0 or dotted line with mark
0 are critical for safety.
Replace only with part number
specified.
Les composants identifiés par une
marque 0 sont critiques pour
la sécurité.
Ne les remplacer que par une piéce
portant le numéro spécifié.
marque 0 sont critiques pour
la sécurité.
Ne les remplacer que par une piéce
portant le numéro spécifié.
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