Sony XR-CA370 / XR-CA370X (serv.man2) Service Manual ▷ View online
13
XR-CA370/CA370X
SECTION 5
DIAGRAMS
Note on Schematic Diagram:
• All capacitors are in
• All capacitors are in
µ
F unless otherwise noted. pF:
µµ
F
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.
•
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 and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : FM
(
no mark : FM
(
) : AM (MW/LW)
〈〈
〉〉
: TAPE PLAYBACK
• 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)
E
: TAPE PLAYBACK
L
: BUS AUDIO IN
Note on Printed Wiring Board:
•
•
X
: parts extracted from the component side.
•
Y
: parts extracted from the conductor side.
•
z
: Through hole.
•
: Pattern from the side which enables seeing.
•
: Carbon pattern.
(The other layers' patterns are not indicated.)
Caution:
Pattern face side:
Pattern face side:
Parts on the pattern face side 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.
5-1.
NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS
14
XR-CA370/CA370X
• Waveforms
– MAIN Board –
– MAIN Board –
3
IC200
4
(OSCO)
4
IC900
ud
(OSC)
1
IC1
qs
(OSC2)
2
IC1
qh
(XO)
4.9 Vp-p
231 ns
3.1 Vp-p
54.3 ns
5.1 Vp-p
30.5
µ
s
– CONTROL Board –
2.4 Vp-p
21.1
µ
s
XR-CA370/CA370X
15
15
EC
B
Q651
R655
R801
C801
R804
JC30
Q800
BC
E
IC2
IC800
R814
R815
R81
C81
JC147
EC
B
Q732
Q731
BC
E
C732
R732
R730
C733
R722
Q730
R350
R353
JC166
JC170
R713
C710
Q711
BC
E
R657
R656
R607
Q351
BC
E
EC
B
Q741
R740
C601
C741
R800
R664
C701
R651
R652
R653
R852
R654
Q650
BC
E
R720
Q725
BC
E
R728
JC110
C2
R60
C3
C4
R4
R3
R6
R5
C1
R1
C5
R2
R18
R17
R26
R16
R43
R13
C8
EC
B
Q726
R500
C501
JC49
R663
R57
R56
R21
R22
R23
R24
R504
JC134
R47
R49
R25
R55
R10
R11
R37
R14
R54
R8
R9
R28
R29
R31
JC133
R30
R32
R35
C205
C204
R203
R204
C203
R202
R201
C200
R200
C202
C201
IC200
IC1
Q451
BC
E
R503
R502
R262
Q253
BC
E
Q252
BC
E
C452
R450
R452
Q450
BC
E
C502
C250
R501
R413
R411
R410
R412
C523
C520
C521
C522
C508
R853
C431
C430
C403
R417
R415
C429
C402
R416
R414
C428
JC173
C427
C423
R409
EC
B
Q403
R405
C425
C421
R407
Q401
R403
BC
E
C424
C420
R406
EC
B
Q400
R402
C426
C422
R408
Q402
R404
BC
E
R400
JC104
IC400
Q251
R250
R263
JC132
JC91
JC53
C411
C412
C413
C414
C415
R421
R420
R419
R418
R422
R423
R401
C401
R208
R209
C206
C207
C210
C600
C208
C209
R314
R306
C304
R304
R308
R310
C306
C311
JC148
JC169
IC300
JC52
R307
R303
C305
R305
R309
R311
C307
C303
R301
C302
R300
R105
R106
C104
JC72
JC44
C102
C101
C100
R101
R100
EC
B
Q100
R104
C404
C405
JC83
R802
R451
1
7
14
8
1
11
22
12
1
14
7
8
11
10
20
1
1
25
26
50
51
75
76
100
CN800
C800
+
L700
JW18
JW17
JW19
JW20
JW27
JW28
D700
JW26
D802
D803
D800
Q740
D741
C742
+
C740
+
+
C650
D650
R650
R721
D653
D742
D722
JW24
JW23
+
C700
JW22
TH800
JW92
TH700
TH701
Q722
D721
JW140
JW139
JW141
JW29
C7
JW142
JW99
JW77
JW145
JW143
JW146
JW117
JW98
JW113
JW103
L1
JW149
JW80
JW82
JW102
JW112
JW114
JW87
JW128
R811
D805
C730
+
D731
R731
R351
R352
D350
CN350
JW84
JW86
JW85
JW138
R12
Q710
JW88
Q350
R711
R712
D651
S1
X2
JW151
X1
JW136
+
C6
JW150
R40
R51
JW157
JW162
JW158
JW152
JW159
JW160
JW161
JW163
X200
JW153
JW13
CN700
JW5
JW4
D723
JW137
R50
R53
R44
R27
R19
R20
JW135
JW122
R725
Q724
D507
D503
D502
D501
D500
D506
D505
D504
JW96
JW97
JW95
JW94
JW6
JW7
D452
D451
R48
R46
JW121
JW119
JW118
JW123
JW116
JW120
JW115
JW127
JW130
JW129
JW126
JW125
JW172
JW124
JW90
JW89
JW108
JW107
JW105
C251
+
C451
+
D250
D253
C419
+
C417
+
C410
+
JW100
JW45
JW46
JW47
JW48
JW55
JW56
JW57
JW58
D300
R206
R207
C211
+
JW171
JW164
R710
R600
R601
R602
R603
R604
R605
R606
CN600
JW68
C312
+
C310
+
JW76
JW61
JW62
CN300
JW71
JW42
TU100
TUNER UNIT
C103
+
C409
+
JW177
JW69
JW73
JW51
JW50
C418
+
C416
+
JW54
CN400
ANT100
(ANTENNA)
JW16
JW8
JW10
JW11
JW31
JW9
C500
+
JW15
JW33
JW32
JW34
JW35
JW12
JW2
IC500
JW3
C506
+
C505
+
JW36
MAIN BOARD
11
1-686-927-
4 3
1 2
C507
1
3
HP901
PLAYBACK
HEAD
(CHASSIS)
1
2
11
12
A
CONTROL BOARD
CN900
B
E
C
1
17
24
25
2
1
8
1
RESET
(CHASSIS)
B
E
C
1
2
3
4
5
6
8
7
5
4
8
7
6
2
1
3
(FRONT VIEW)
(FOR SONY BUS)
CN800
F901
17
9
1
16
8
18
19
L
R
L
R
BUS
AUDIO IN
AUDIO
OUT
1
8
M901
(CAPSTAN/REEL)
M
RED
BLU
S901
(DIRECTION)
REV
m
FWD
BRN
BRN
ORG
ORG
S902
(FF/REW)
(OFF : PLAYBACK)
S903
(TAPE DETECT)
(ON : TAPE IN)
YEL
YEL
TO
CN350
A
B
C
D
E
F
G
H
I
1
2
3
4
5
6
7
8
9
10
11
12
13
J
(BUS CONTROL IN)
R38
R39
R58
R59
C106
+
C105
R102
C315
+
R302
C314
+
JW66
R312
R1313
C503
JW180
C262
R259
R264
R7
JW144
JW172
C734
C731
C400
C10
R62
R61
(CA370X)
(CA370)
TO
CN700
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
WHT
GRN
VIO
GRY
WHT/BLK
GRN/BLK
VIO/BLK
GRY/BLK
1
2
3
4
5
6
7
8
1
2
3
5
6
7
8
GRN
WHT
GRY
VIO
VIO/BLK
GRY/BLK
WHT/BLK
GRN/BLK
4
YEL
BLU
RED
BLK
BLK
YEL
BLU
RED
JW59
JW60
JW181
JW176
D724
D250
D-5
D253
D-5
D300
G-3
D350
H-10
D451
D-6
D452
D-6
D500
C-7
D501
C-7
D502
C-7
D503
C-7
D504
D-7
D505
D-7
D506
C-7
D507
D-7
D650
E-9
D651
J-10
D653
D-9
D700
D-10
D721
D-8
D722
D-9
D723
D-8
D724
D-9
D731
H-11
D740
D-10
D741
E-10
D800
E-10
D802
E-11
D803
E-11
D805
F-11
IC1
G-7
IC2
G-11
IC200
H-5
IC300
H-3
IC400
E-3
IC500
B-6
IC800
E-11
Q100
E-2
Q251
E-5
Q252
E-5
Q253
E-6
Q350
I-11
Q351
H-10
Q400
D-4
Q401
D-4
Q402
D-3
Q403
D-4
Q450
D-5
Q451
D-6
Q650
E-9
Q651
I-9
Q710
I-11
Q711
I-10
Q722
D-8
Q724
D-7
Q725
E-8
Q726
E-7
Q730
H-11
Q731
G-11
Q732
G-10
Q740
D-10
Q741
E-10
Q800
F-11
5-2.
PRINTED WIRING BOARD – MAIN Board –
Ref. No.
Location
• Semiconductor
Location
(Page 19)
XR-CA370/CA370X
16
16
5-3.
SCHEMATIC DIAGRAM – MAIN Board (1/2) –
•
See page 14 for Waveforms.
•
See page 20 for IC Block Diagram.
ANT100
R101
R104
R201
C202
R100
C203
X200
R202
C201
R200
C204
R203
R204
R206
C208
C207
C209
IC200
C211
C206
R207
Q252
R250
R259
D253
D250
Q253
D300
R314
R312
R313
C302
C303
R300
R301
R302
R306
R304
C304
C306
R308
R310
C311
C312
C305
R307
C307
R311
R309
C310
R37
R8
R9
R25
R49
R46
R47
R48
R21
R23
R57
R20
R19
R18
R17
R27
R44
R16
R26
R53
R607
R50
R13
C8
R12
R3
R4
R59
R60
R5
R6
R7
C3
R2
X1
C1
C2
C6
C5
R58
C600
Q351
R352
R350
Q350
R353
D350
R600
R601
R602
R603
R604
R605
R606
CN600
R55
R11
R10
R54
R14
R105
R106
C103
C100
C101
C102
C104
TU100
L1
C210
R56
R24
R22
CN350
CN300
S1
M901
S901
S902
S903
R351
IC300
HP901
Q100
Q251
R43
IC1
R38
R305
R303
R1
X2
C200
R35
R32
R31
R29
R28
R39
R40
R51
R208
R209
C314
C10
R61
R62
C4
R262
R264
C262
22k
0
1k
12p
100
12p
4.332MHz
22k
470p
470k
0.1
0
470
0.001
10
2.2
330p
560p
SAA6588T-V2
47
16V
0.1
10
2PB710A
470
10k
1SS133
MTZJ5.1A
PDTC114EK
1SS133
10
1k
1k
0.001
0.001
47k
47k
100
56
100
100p
0.01
330k
15k
470p
100
10V
10V
100p
56
0.01
15k
330k
1
50V
100k
100
100
100
100
100
100
100
100
10k
0
100
100
100
47k
100
100
100k
100
100
1k
100
100
0.001
100k
100k
4.7k
1k
100
100
100
1k
18p
0
18.432MHz
12p
12p
22
10V
0.1
1k
0.1
PDTC114EK
1.5k
10k
2SA1428
1
11ES2
1k
1k
1k
1k
1k
1k
1k
12P
100
100
100
100
100k
1k
1k
4.7
50V
50V
0.047
0.001
0.001
0.1
TUX-030
0.0022
0
10k
100
8P
3P
1.5k
HA12232FP-EL
PDTC144EK
2SD1664
0
MN101C49KSF
100k
100
100
1k
32.768KHz
0.1
100k
0
100k
100k
0
100k
100k
100
220
220
100
6.3V
100p
1k
1k
22p
1k
1k
1
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
TU12
TU2
T
U
1
T
U
9
T
U
1
0
T
U
8
T
U
7
T
U
5
T
U
4
T
U
3
TU7
TU8
TU6
PNL1
PNL4
PNL7
PNL5
PNL3
PNL6
PNL2
TU4
TU5
T
U
9
AU8
AU5
AU6
AU7
A
U
1
A
U
2
A
U
3
A
U
4
B
U
S
4
B
U
S
5
B
U
S
3
T
U
7
T
U
8
B
U
S
6
BUS1
BUS2
TU3
TU1
T
A
P
E
4
T
A
P
E
1
T
A
P
E
2
T
A
P
E
3
TAPE1
TAPE2
TAPE3
PNL1
PNL2
PNL3
PNL4
PNL5
PNL6
PNL7
T
U
I1
1
D1
D2
B
1
B
2
TAPE4
TU11
T
U
6
T
U
1
0
TU2
T
U
1
2
(CHASSIS)
(FM/AM ANTENNA)
NOSE-SW
LAMP+B
LAMP+B
LCD-CLK
LCD-CE
GND
GND
MOTOR+
MOTOR-
FF/REW
TAPE-IN
L-CH
R-CH
N/R
L
R
(PLAYBACK)
(CAPSTAN/REEL)
(DIRECTION)
REV
FWD
(FF/REW)
(OFF:PLAYBACK)
(TAPE DETECT)
(ON:TAPE IN)
LCD-CKO
XO
XI
VSS
OSC1
OSC2
VDD
VREF+
MPTH
VSM
VREF-
NC
I
BE
EP
N
C
I
DES
T-S
EL
0
D
EST-S
EL2
DEST
-SEL1
D
AV
SS
TAP
E-O
N
DA
V
DD
AM-ON
FM-ON
TU-ON
N
/
NC
NC
NC
N
C
N
C
N
C
NC
N
C
N
C
NC
NC
NC
NC
NC
NC
NC
NC
N
C
NC
N
C
NC
NC
NC
NC
NC
AN
T
G
N
D
1
R
L
Q
U
ALITY
S M
ETER
TU
M
U
TE
M
U
TE CO
N
R
D
S
VCC
TU
VD
D
G
ND
2
TU
S
CL
TU
SD
A
E2P SCL
E2P VD
D
E2P S
D
A
(CHASSIS)
LVIN
CIN
SCOUT
VREF
MPX
VSSA
VDDA
AFIN
MAD
PSWN
MPO
HPTH
TCON
OSCO
OSCI
VSSD
VDDD
DAVN
SCL
SDA
1/2VCC
G
ND
V
R
EF
NC1
N
C2
R
IP
VCC
N
C3
NC4
(CHASSIS)
(CHASSIS)
LCD-DO
LCD-DI
LCD-RESET
GND
GND
GND
(1/2)
NC
NC
NC
NC
LCD-CE
NC
ILL-ON
NC
N
C
NC
N
S-M
A
SK
NC
NC
NC
NIL
NC
I2C
-SIO
AM
P
-ON
FRASH WRITE
DRIVE+5V
RESET
Q350,351
CAPSTAN/REEL
MOTOR DRIVE
TAPE EQUALIZER
RDS DECODER
NOISE DET
DISCHARGE
SWITCH
+5V REGULATOR
Q252,253
TUNER
B+ SWITCH
SYSTEM CONTROLLER
ATT
AM
P
-A
TT
TU-ATT
DX
LO/
VOL-ATT
LCD-RES
FLASH-W
TEST-IN
EE-SIO
EE-CKO
COL-SEL
N
O
SE
-SW
FF/R
EW
TAP
E-IN
R
QUALITY
MMOD
LCD-SO(TX)
LCD-SI(RX)
KEYACK
SYS-RES
BUS-ON
D
A
VN
BU
-IN
R
ESET
PO
W
ER
-O
N
IL
L-IN
ACC
-IN
TEL-ATT
B
US
-SO
BU
S-S
I
BU
S
-CK
O
I2C
-CKO
(CA370)
(CA370X)
TUNER UNIT
TU
-A
TTIN
10
µ
H
R263
10
R102
5.6
C250
C251
0.01
10
16V
C105
C106
1
100
10V
10V
C205
C315
100
6.3V
(Page 17)
(Page 19)
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