ICF-CD553RM
25
25
6-12. SCHEMATIC DIAGRAM – MAIN Section (2/2) –
•
See page 28 for Waveform.
•
See page 28 for IC Block Diagrams.
CN408
C102
C105
C205
C202
C201
C101
C103
R205
R105
R201
R202
R238
R138
C203
R106
R206
C320
CN412
D303
CN402
C339
R337
R331
R332
C305
C321
C323
C324
R316
R315
C206
C207
C106
C107
R209
R210
R109
R110
C208
C108
C325
C326
R214
R114
C111
R119
R219
R304
R305
R306
R307
R308
C309
C346
C335
R310
C316
R312
C318
R309
C310
C311
C314
C315
R314
R338
C966
C967
C965
C964
Q956
Q957
R965
R963
R967
C968
R968
C962
C961
D959
R959
D956
C960
C959
D957
D955
C958
C957
R956
C956
C955
R954
R955
D953
C953
C954
C952
Q952
D954
D952
C951
D958
D951
R951
C963
R961
R962
R960
R115
R141
R241
R215
C134
C234
C110
R112
C210
R212
R133
R233
R132
C131
C132
C231
C232
R232
Q304
CN303
R234
R231
C233
R211
R111
R134
R131
C133
R339
C353
C211
C308
C347
C345
C344
C122
C222
C352
C348
C123
C223
R330
R324
C317
R313
R104
R204
C350
C351
R228
R322
R128
D203
R213
Q102
Q202
R113
C341
R101
R102
D103
Q958
Q955
R952
C969
C303
R301
R302
C322
C354
JC403
Q104
Q204
Q201
Q101
IC302
R207
R107
Q953
Q951
R958
Q954
R964
D960
IC303
Q308
Q301
Q302
C338
C356
R311
M301
IC304
C301
C342
C340
C319
X301
Q303
R953
R966
MIC1
R336
Q305
14P
2.2
2.2
2.2
2.2
2.2
2.2
2.2
22k
22k
470k
47k
22k
22k
2.2
1k
1k
47
16V
2P
IN4002
2P
0.047
2.2k
100k
100
47
16V
0.01
100p
100p
1k
1k
0.1
0.22
0.1
0.47
2.2k
220k
4.7k
220k
4700p
4700p
0.22
0.1
100k
100k
10
50V
2.2k
2.2k
1k
1k
1k
1k
1k
0.1
100p
1000p
100k
100p
470k
1
100k
10
50V
0.1
10
50V
0.1
47k
47k
0.01
470
10V
470
10V
0.01
2SD2396K
2SA1576A
220
10k
4.7k
0.01
2.2k
220
10V
0.01
MTZJ-T
-77-6.8B
0
MTZJ-T
-77-3.9B
0.01
220
10V
1SS355
1SS355
220
10V
0.01
220
0.01
220
10V
100
100
1SS355
0.01
470
10V
470
10V
2SA1576A
MTZJ-T
-77-4.7B
MTZJ-T
-77-5.6B
0.01
DA204U
DA204U
10k
0.01
4.7k
2.2k
10k
47k
10k
10k
47k
1000p
1000p
4.7
50V
1k
4.7
50V
1k
1k
1k
220k
0.022
0.047
0.022
0.047
220k
DTA124EUA-T106
13P
4.7k
2.2k
0.047
220k
220k
4.7k
2.2k
0.047
1k
1000p
10
50V
1000
10V
100p
100p
100p
4.7
50V
4.7
50V
47
16V
0.1
4.7
50V
4.7
50V
2.2k
2.2k
1
100k
4.7k
4.7k
0.1
0.1
0
2.2k
0
1SS355
1k
2SC4081
2SC4081
1k
0.047
L301
4.7
µ
H
470k
47k
1SS355
2SC4081
2SC4081
47
10
50V
0.1
47k
1k
47
16V
0.022
0
2SC4081
2SC4081
2SC4081
2SC4081
BD3870FS
470k
470k
KTC3203Y
2SD2396K
220
KTC3203Y
47
1SS355
MS87V1021
2SC4081
KTA1271Y
DTA123JUA
0.01
0.022
22k
BA6208
1
0.1
220
10V
2200p
4.19MHz
2SC4081
47
10k
10k
DTC144EUA-T106
A1
A2
A3
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
DI
CE
CL
WRQ
DO
RES
DRF
COUNT
PLL_CLK
PLL_DATA
PLL_CE
B
U
S
Y
S
K
S
O
S
I
C
S
R
ES
E
T
CDON
VOLDAT
VOLCLK
RADIOON
AMUTE
3.3V
GND
LCH
RCH
RES
DI
CE
CL
WRQ
DO
DRF
FSEQ
6V
PGND
MUTE
COUNT
LCH
RCH
GND
VT
S-GND
PLL CLK
PLL DATA
PLL CE
R +B
1
11
(2/2)
AGC
AGC
MUTING
CONTROL
SWITCH
FILTER AMP
FILTER AMP
LINE AMP
LINE AMP
INPUT SELECT SWITCH,
ELECTRICAL VOLUME,
SURROUND/TONE CONTROL
+5V
REGULATOR
Q951,952,955
+3.9V REGULATOR
+3.3V REGULATOR
REGULATOR
Q956-958
+6V
BUFFER
VOICE MESSENGER
MIC AMP
CD ON
SWITCH
SWITCH
RADIO ON
CD TRAY
OPEN/CLOSE
CD TRAY
OPEN/CLOSE
MOTOR DRIVE
MIC
1
2
SWITCH
STANDBY