Read Sony ICF-C273 Service Manual online
ICF-C273
16
16
4-6. SCHEMATIC DIAGRAM – MAIN SECTION (2/2)–
D101
D102
D103
D104
D105
C105
C106
C107
C108
C109
R132
R133
R134
R135
R136
R102
R103
R104
R105
Q102
Q103
Q104
Q105
Q106
Q107
D108
R121
R122
R123
D110
D111
D112
C135
C136
C137
C138
S102
S104
S105
S106
S107
S108
S109
S110
S111
S112
S113
S114
S115
S116
S117
JW121
JW122
R193
R194
R195
R196
R197
R198
R199
R200
R141
R151
R125
R126
R128
R131
R146
R149
R156
R159
R129
R130
R147
R148
C131
C132
R150
R160
C133 C134
R114
R109
R101
R110
R112
C111
C112
X101
R138
C115
R120
X102
R107
R108
C119
C120
R111
C117
R211
R213
R214
R215
C121
C122
C123
C113
C110
C118
IC101
IC102
C101
C102
C103
R161
R162
R162
R163
R164
R164
R165
R166
R166
R167
R168
R168
R169
R170
R170
R171
R172
R172
R173
R174
R174
R175
R176
R176
R177
R178
R178
R179
R180
R180
R181
R182
R182
R183
R184
R184
R185
R186
R186
R187
R188
R188
R189
R190
R190
R191
R192
R192
LCD101
CN501
JC102
W500
D106
R157
C124
R115
R119
Q109
Q108
IC103
S118
S119
S103
S101
D109
Q101
R106
R137
R142
R144
R145
R152
R153
R154
R155
1SS355TE
1SS355TE
1SS355TE
1SS355TE
1SS355TE
470p
470p
470p
470p
470p
4.7k
4.7k
4.7k
4.7k
4.7k
1k
1k
1k
4.7k
2SC4081
2SC4081
2SC4081
2SC4081
2SC4081
2SC4081
SLP-235A-51S1E
10
10
10
SLP-235A-51S1E
SLP-235A-51S1E
SLP-235A-51S1E
0.01
0.01
0.01
0.01
10k
10k
10k
10k
10k
10k
10k
10k
10
10
470
220
4.7k
4.7k
4.7k
4.7k
4.7k
4.7k
100
47
470
220
0.01
0.01
4.7k
4.7k
0.1
0.1
100k
100k
1k
1k
1k
22p
22p
32.768kHz
220k
1
10
4.191MHz
10k
10k
0.01
0.01
1M
0.01
22k
100k
100k
100k
0.1
0.1
0.1
0.1
1000
6.3V
0.01
XC61CN2002NR
47p
100p
100p
10k
10k
10k
10k
10k
10k
10k
10k
10k
10k
10k
10k
10k
10k
10k
10k
10k
10k
10k
10k
10k
10k
10k
10k
10k
10k
10k
10k
10k
10k
10k
10k
10k
10k
10k
10k
10k
10k
10k
10k
10k
10k
10k
10k
10k
10k
10k
10k
9P
9P
1SS133T-77
100
0.1
100k
100k
2SC4081
LED DRIVE
2SC4081
LED DRIVE
XC6201P302MR
SLP-235A-51S1E
DTC144EUA
VOLTAGE
DETECT
10k
2.2k
1k
2.2k
2.2k
4.7k
1k
2.2k
DATA
CLK
BUZZER
CE
GND
MUTE
V DET
LED
VDD
ALM A
ALM B
LIGHT1
LIGHT2
SEG0
SEG1
SEG2
SEG3
SEG4
SEG5
SEG6
SEG7
SEG8
SEG9
SEG10
SEG11
SEG12
SEG13
SEG14
SEG15
SEG16
COM0
COM1
COM2
COM3
SEG0
SEG1
SEG1
SEG2
SEG3
SEG3
SEG4
SEG5
SEG5
SEG6
SEG7
SEG7
SEG8
SEG9
SEG9
SEG10
SEG11
SEG11
SEG12
SEG13
SEG13
SEG14
SEG15
SEG15
SEG16
SEG17
SEG17
SEG18
SEG19
SEG19
SEG20
SEG21
SEG21
SEG22
SEG23
SEG23
SEG24
SEG25
SEG25
SEG26
SEG27
SEG27
COM0
COM1
COM2
COM3
SEG27
SEG26
SEG25
SEG24
SEG23
SEG22
SEG21
SEG20
SEG19
SEG18
SEG17
LIGHT2
LIGHT1
ALM A
ALM B
LED SWITCH
Q102-107
ALARM A
ALARM B
D108-110
(BACK LIGHT)
SYSTEM
CONTROL
VOLTAGE
DETECT
RESET
TUNUNG
+
ON/BAND
NAP
3
TUNUNG
-
OFF/ALARM RESET
1
4
CLOCK
SLEEP
2
5
D.S.T
SUMMERT
ALARM A
ALARM B
ENTER/BRIGHTNESS
TIME SET
TIME SET
0.22u
SNOOZE/DATE/SLEEP OFF
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