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FT4430
Service manual
Ricoh FT4430 Service Manual page 423
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
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4. DF MAIN BOARD (A419)
CAPACITOR
SYMBOL
SY!4B01
NO.
C101
135
C112
C102
137
C113
C103
137
C114
C104
138
C115
C105
139
C116
C106
136
C117
C108
141
C118
141
C119
C109
Cll0
C120
144
Clll
144
C121
SYMBOL
INDEX
SYMBOL
No.
No.
R141
145
R151
R142
145
R152
R143
145
R153
R144
145
Rlfi4
R145
R155
149
R146
149
R156
R147
149
R157
R148
148
R158
R149
149
R159
R150
145
R160
IC
SY!4B01
iNDEX
SYMBOL
!iO.
Xo.
IC101
116
1C108
IC109
IC102
2
SOCKET
107
Icllo
1C103
122
lC1ll
HEAT
160
lcl12
SINK
160
IC113
1C104
119
IC114
IC105
118
IC115
[C106
117
IC116
IC107
124
INDEX
SYMB0L
INDEX
SYMBOL
I
io.
Xo.
NO.
NO.
30.
I
144
C122
144
C132
C133
144
C123
144
143
C124
C134
144
144
C125
144
C135
144
C126
144
C136
144
C138
C127
144
144
C128
144
C140
144
C129
144
C141
144
C130
C142
144
144
C143
C131
144
INDEX
SYMBOL
lNDEX
SYMBOL
NO.
NO.
NO.
NO.
NO,
R172
145
R162
152
145
R163
149
R173
145
R164
149
R174
R175
145
R165
149
R176
145
R166
149
145
R167
149
R177
R178
145
R168
149
R179
150
R169
149
146
R170
149
R180
149
R171
149
R181
L
LED
CONNECTOR
SYMBOLL
!iO.
No.
CN101
120
LED101
114
1EO1O2
CN102
115
114
CN103
121
1ED103
114
1ED104
CN104
123
114
' led1055
CN105
112
114
4
3
COIL
123
OSCILLATOR
RESISTOR
INDEX
SYMBOL
INDEX
SYMBOL
INOEX
No.
NO.
No.
NO.
I
144
C144
144
R101
R102
144
C145
144
144
C146
144
R103
C147
144
144
R104
144
C148
137
R105
144
C149
139
R106
142
R107
153
R108
140
R109
144
R11O
[NDEX
SYMBOL
INDEX
SYMBOL
[NDEX
NO.
No.
NO.
NO.
R182
R192
149
147
146
R183
149
R193
150
R184
147
R194
R195
150
R185
149
147
R186
149
R196
149
R187
147
R197
R198
147
R188
149
149
R189
149
R199
R190
149
146
R200
147
R191
149
R201
DIODE
FUSE
r
SYMBOL
lNOEX
SYMBOL
INDEX
INDEX
NO.
/40.
NO.
NO.
FU101
103
0101
113
102
D103
113
FU102
L
104
D104
113
b
105
106
RESISTOR
ARRAY
SYMBOL
INDEX
NO.
!40.
OIP1O1
110
8
SYMBOL
INDEX
SYMBOL
INDEXX
NO.
NO.
NO.
No.
!40.
154
Rlll
155
R121
146
126
R112
155
R122
146
157
R113
156
R123
146
128
R114
156
R124
146
154
R115
146
R125
146
R116
146
129
R126
146
129
R117
146
R127
152
159
R118
146
R128
152
R119
158
146
R129
152
R120
146
127
R130
152
POTENTIOMETER
SYMBOL
INDEX
SYMBOL
INDEX
No.
?40.
NOo.
No.
NO.
149
R202
150
VR101
131
148
R203
148
VR103
132
151
R204
148
VR104
133
R205
148
148
VR105
133
151
148
150
151
147
151
TRANSISTOR
SYMBOL
INDEX
No.
No.
io.
108
Q101
111
9102
109
111
April 30, '88
SYMBOL
INOEX
No.
No.
R131
149
R132
149
R133
149
R134
149
R135
149
R136
149
R137
149
R138
149
R139
145
R140
145
TEST PIN
SYMBOL
INDEX
NO.
NO.
101
TP101
TP102
101
TP103
101
TP104
101
TP105
101
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Chapters
Section 2
26
Section 4
124
Section 5
146
Section 7
226
Section 8
264
Section 9
283
Section 11
313
Table of Contents
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