Read Sony SRF-M55 Service Manual online
2
3
4
5
6
7
8
9
10
11
12
A
1
B
C
D
E
F
G
02
[MICROCOMPUTER BOARD]
(SIDE B)
(SIDE B)
[MICROCOMPUTER BOARD]
(SIDE A)
(SIDE A)
[MAIN BOARD] (SIDE B)
[MAIN BOARD] (SIDE A)
11
(11)
1-676-003-
11
(11)
1-676-003-
11
(11)
1-676-002-
11
(11)
1-676-002-
C302
C326
C320
C321
C316
C318
C323
C317
C203
R332
R301
R321
R334
R306
R316
R317
R311
R310
R309
R309
R312
R204
R202
R302
R304
R331
R330
R333
R305
R318
R303
R319
R320
R313
R308
R307
R203
R205
C206
R206
R201
C324
C305
C303
C304
C327
C328
C311
C315
C314
C319
C202
C204
C205
S202
POWER
(AUTO OFF)
S201
HOLD
S203
MODE
1
2
4
3
1 2
4 3
IC201
1
2
4
5
3
IC302
IC202
C201
X201
CN201
CN202
1
1
5
10
5
10
13
LCD201
LIQUID
CRYSTAL
DISPLAY
S205(JOG)
1
5
10
15
19
20
25
30
35
36
IC301
ECB ECB
Q305
Q304
C312
C313
L304
D301
D306
D305
D303
C329
L303
T301
C301
Q301 Q307
ECB
Q308
ECB
BE
C
Q306
Q310
RV2
\VOL\∑
C27
C5
C6
C29
C26
C1
C18
C23
C22
C9
C21
C20
R9
R30
R3
R2
R2
R1
R5
R4
R8
R99
C10
R98
R97
R96
C24
C16
C17
C8
C7
C19
C15
C13
C14
C25
C11
L4
1
5
6
10
IC3
1
5
7
14
10
8
IC2
C2
C28
C4
C12
L3
L1
RV1
T1
CT1
S1
S2
S1
FM SENS
DX
LOCAL
S2
GROOVE
MEGA BASS
OFF
CT2
L2
1
4
5
8
IC1
CN1
1
5
10
DRY BATTERY
SIZE "AAA"
(IEC DESIGNATION R03)
1PC, 1.5V
EP1
2
C120
C119
C122
C121
R118
R116 R117
R123
R122
C123
L5
L7
L6
B
E
E
C
Q103
1
5
13
15
15
20
24
10
12
IC101
C114
C115
C113
C109
C108
C106
C101
C102
R106
R105
R109
R119
R121
R115
R124
R120
R111
R107
R102
R108
R101
R104
R103
R110
R112
R113
R114
C103
C124
C105
C104
C111
C125
C110
C107
C116
C112
BCE
Q102
CF1
CF3
BPF101
CF2
D101
D102
B E
C
BCE
Q104
Q101
Q105
ECB
TP
(ANT)
TP
(19kHz)
TP
(LPF)
S202
-1
-2
BATT2
LITHIUM
BATTERY
BCE
– 10 –
– 12 –
– 11 –
SRF-M55
4-3. PRINTED WIRING BOARDS
Note on Printed Wiring Boards:
Note:
• X
: parts extracted from the component side.
•
r
: Through hole.
• b
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
Caution:
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)
parts face are indicated.
D101
F-11
D102
F-11
D301
F-4
D303
F-4
D305
D-5
D306
D-5
IC1
F-8
IC2
D-8
IC3
C-5
IC101
E-12
IC201
D-3
IC202
D-3
IC301
C-5
IC302
E-5
Q101
F-12
Q102
E-11
Q103
B-12
Q104
G-12
Q105
G-12
Q301
G-5
Q304
D-4
Q305
D-4
Q306
F-5
Q307
G-5
Q308
F-5
Q310
F-5
Ref. No.
Location
r
Semiconductor
Location
Note on Schematic Diagram:
Note:
• 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.
•
U
: B+ Line.
•
H
: adjustment for repair.
• Power voltage is dc 1.5V and fed with regulated dc power
supply from battery terminal.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : FM
no mark : FM
• 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.
• Signal path.
F
: FM
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