Sony SRF-M55 Service Manual page 8

SRF-M55
4-3. PRINTED WIRING BOARDS
1
Semiconductor
r
Location
Ref. No. Location
D101 F-11 A
D102 F-11
[MICROCOMPUTER BOARD]
D301 F-4
(SIDE B)
D303 F-4
D305 D-5
D306 D-5
IC1 F-8
IC2 D-8
IC3 C-5
IC101 E-12 B
IC201 D-3
IC202 D-3
IC301 C-5
IC302 E-5
Q101 F-12
Q102 E-11
Q103 B-12
Q104 G-12
C
Q105 G-12
Q301 G-5
Q304 D-4
Q305 D-4
Q306 F-5
Q307 G-5
Q308 F-5
Q310 F-5
D
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
E
(Side A) parts face are indicated.
Note on Schematic Diagram:
Note:
• 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 Ω and
1 / W or less unless otherwise
4
specified.
F
• 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
• Voltages are taken with a VOM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal produc-
tion tolerances.
• Waveforms are taken with a oscilloscope.
G
Voltage variations may be noted due to normal produc-
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
02
F : FM
– 10 –
2 3 4
S202
POWER
(AUTO OFF)
S202
R202
C204
C205
X201
4 3
C202 Q304
IC201
1 2 ECB ECB
IC202
C312
1 4
R204
2 3
CN201
1
LCD201
5
LIQUID
CRYSTAL
10
DISPLAY
C305
13
D301
10 5 1
CN202
R301
1-676-003-
11
(11)
5 6 7
[MICROCOMPUTER BOARD]
S205(JOG)
(SIDE A)
R316
C327
C319
R312
C328
36 R317
1
R311
35
5 IC301
R310
30
R309 10
25
15
19
C314
20
Q305
C315
C311
C313
BATT2
R306
LITHIUM
BATTERY
D306
D305
L304
3 2 1
IC302
4 5
C324
L303
R334
C303
Q310
C304 R332
Q306
R321
Q301 Q307
-1 11
-2
C301
(11)
1-676-003-
– 11 –
8 9 10
[MAIN BOARD] (SIDE B)
EP1
2
C19
C17
C16
C25
C15
6 5
C24
IC3
C13
1 C14
10
14 10 8
L4
IC2
R5
C8 1 5 7
C7
S2 R3
R2
R1
C2
DRY BATTERY
T1
SIZE "AAA"
(IEC DESIGNATION R03)
1PC, 1.5V
S1
CT1
IC1
1
8
R30
4 5
10 5 1 L2
CN1
R9
1-676-002-
11
(11)
11 12
[MAIN BOARD] (SIDE A)
R118
C123
Q103
C120
C119 C122
C121
R116 R117
L5
TP
(19kHz)
R115
R121
12
13
15
10
C112 C111
20 5
IC101 CF3
C110
24 1
C107 C116
R124
BCE
R120
CF1 CF2
D101
TP
C125
(ANT)
R111
BPF101
TP
(LPF)
C124
C103 R106
C105
D102
BCE
R109
Q104
R105 Q101
C104
C
B E
Q105
R119
11
1-676-002-
(11)
– 12 –