Icom IC-M88 Service Manual page 35

VCC
T5V
VCO CASE
V5FV
Q41
R41 C44 C45 R61
1.5k 2SC4226
470p 0.01 100
L41 C42
C46
80nH
47p R43 0.75p
4.7
C61 R62 L61
0.001 68k 0.1 H
C31 C41 R42 C43
C57
20p 5p 12p
3.9k 0.5p
DO1
Q61
2SC4215
L81
3.3 H
C56
R51
0.01
2.7k
Q81 XP1214
C81 R81
R53
12p 330
4.7
4 3
Q51
2
L82 R82
2SC4226
3.3 H 390
DO2
5 1
DO2
C54
R52 C83
18p
5.6k
47p
C82
12p
Q82
DTC144EU
VCOS
S5V
PLLIN
RSSIV
R5V
VCOS
PLLIN
R5V
C210 C195 C194 R193
L191
4.7 0.001 0.022 3.3k
0.47 H
FI211
FL-353 C211
R211
0.001
1k
31.05 MHz Q191
TX: 0.0V
3SK299
RX: 0.89V
C191
C192
C213 0.001
47p
6p
R5V
RSSIV
4.97V
DET
S5V
IC251 M62363FP-650C
1
SQLOUT 24 DA5V
VIN1 VIN8
SQCON
2 23 T4CON
VOUT1 VOUT8
MOCON 3 22 T3CON
VOUT2 VOUT7
MODIN 4 21 DA5V
VIN2 VIN7
5 20
VDD GND
DASTB 19
6
LD RESET
SCLK 7
18
CLK VDAREF
SDATA
8 17
DI DO
CDTENC
9 16 DA5V
VIN6
VIN3
DTCON 10
15 T2CON
VOUT6
VOUT3
A
FRCON 11 14 T1CON
VOUT4 VOUT5
DA5V 12 13 DA5V
VIN4 VIN5
B
S5V S5V
S5V
C391
0.1
IC383
TC3W03FU
S5V
1 8
CE VCC
2 7
XT B
3 6
XT A
1 MHZ
4 5
GND Q
R387
1M
R388
1k
X381
CR-746
4.000 MHz
S5V
Q381
R389
C398
DTC144EU
10k
12p
C392
27p
CKSIS
C393 C394
27p
120p
CKSIS
CKSIS
C
R92
100
TX: 3.51V
R65
RX: 3.42V
TX: 3.52V 100
RX: 3.46V
C64 C92
C63 C97
L62 0.001
0.001 0.1
47p
R64 0.1 H R93
C65
47k
18p 10k
C62 D91
R63
7p
4.7 MA77 W91
Q62
2SC4215
R72
220 TX: 1.87V
RX: 0.0V
C72
L71 C91 R91
0.001
R71
0.1 H C73 9p 1k
68k
12p
TX: 1.10V
Q71
RX: 0.36V
2SC4215
C71
D92
2p
L72 33nH MA77
MP41
1 C75 C74
2 56p 56p
R83
3
10k
S5V
PLLIN
RSSIV
R192
C203 R204 C202
R202
100
8p W202 W201 12 27p 10k
C193
56p L203
TX: 0.0V R206 R205 R203
0.1 H
RX: 4.20V 4.7k
470 470
C189 C185
5p 1p
D182
HVU350B
L181 C188 C184
R186
2.5p
4.7k 56nH 6p
R191 R184
C186
120
33p 220k
R185
10k
T4CON T3CON
R5V
C187
0.001
DET
S5V
S5V S5V
S5V
R5V
C253
TX: 0.0V
0.01 R294
RX: 1.71V
10k R305
100k
C291
0.01
C293
Q291
0.033
XP4601
4 3
C395 R291 R292 R293
68k
0.1 68k 68k 5 2
1
6
TX: 0.0V
S5V
C292 C294
RX: 3.61V R307
0.0068 0.0018
1.2k
S5V
DET
S5V S5V
R311
100k
C313 R315
820p 390k
5
3
C312
R313
R314 4
0.022
39k
82k
DET 1
IC311
2
NJM2125F
R316
R312 C314 180k
100k
820p
C315
0.1
MAIN UNIT
11 - 2
VCC
T5V
C96 R97
0.001
10
TX: 4.86V
RX: 0.0V
EP101
C106
0.001
C98
0.001
R96 L92
L102
3.3k 27 H
18nH
C103 Q101
W92 W101 W102 100p
RD01MUS1
Q91 C107
22p
2SC5110
R103
68
R94
1.5k
R95 R98 C99 R101 R102 C104 C105 R113
4.7k
470 100 0.001 4.7k 33k 0.1 0.001
S5V
RSSIV
TX: 0.0V
RX: 3.22V
L165
C171
1 H R175 0.47
R5V
10k
R201
1k
C167
C173 C172
0.01
47p 0.001
L166
56nH
TX: 0.0V
C201
C164
RX: 4.95V
0.001
7p
Q165 R165
100k TX: 0.0V
3SK294
C181 RX: 3.59V
0.001
D181
HVU350B
R181 R167 C166 C165 R166 L155 C163
820 470 47p 0.001 270k 56nH 4p
C182
R182 C161
82p 220k 56p
R183
10k
TX: 0.0V
RX: 1.86V
C183 T2CON
0.001
R5V
R296
15k
C261
0.015
R261
R297 R298
4.7k
10k 4.7k
CDECV
C302
C301
0.022 0.0022
R306
68k
AG3V
DET
DETMS
C311
0.001 R282
100k
R284
R317
100k
1.5k
WDECV
DET DETIN
SRXMS
C272
0.47
C316
0.047
R281
100k
SRXMS
CTFIS
VCC
T5V
EP111
C129
C128
47p 0.001
C114 C115 L112
47p 0.001 60nH
L121 L122
C111 R111 C124
10.5nH 22nH
100p 10 0.001
R121
15k
R112 C121 C122 C123 C125
Q111
10 56p 8p 15p 15p
RD07MVS1
R114 C112 C113
MP111
100k 0.001 0.1
D121
RB706F-40
C145 R149 R148 S5V
0.001 1k 100
IC141
R141
5
TA75S01F 1 150k
S5V
4
3
C144 C141 R142
0.01 0.1 39k
2
RSSIV
Q171
R171
R143
10k
2SK1829 2.2k
R147
150k
TX: 0.93V
TX: 0.0V
RX: 4.42V
RX: 3.22V
R172
C143 R146
470k 0.1
10k
R173
5.6k
D171
MA2S111
T1CON
C160 C156
1p 6p
D154
D155 C154 C168
HVU350B
HVU350B
0.001 6p
L156 C153
L154 C159
56nH 3p
56nH 2.5p
R151
R155 C157 R153
220k 27p 220k 100
L153
R156 R154 R152
1 H
10k
10k 22k
T1CON ATTS
C158
C162 D153 C155
0.001 0.001
0.001 1SV307
S5V
C265
0.001
2.11V
R263 R264
R262
8.2k
12k 47k
C262
IC261
0.033
NJM2904V
1 8 S5V
C263
0.047
2 7
3 6
4 5
R267
10k
RXDEC
R266
R265
10k 5.6k
R269
100k
AG3V
DETMS S5V S5V
C281
IC281 0.01 IC282
TC4W66FU TC4W53FU
S5V
1 8 1 8
RXDEC
2 7 2 7
3 6 3 6
4 5
4 5 CTFIS
R283
100k
CTCS mode: 5.00V
CTFIS
T5V
R122
151
L124
ANT
2.7 H
D131 C131 L131 L132 J41
1SV307 0.001 30nH 32nH CP131
1
C127
0.001 C133 2
11p
L123 C135
50nH 7p
R131
C132
82k
22p
C126 C134 C136
18p 24p
9p
C138
1p
D132
1SS375
R132
10k TDETV
C137
0.001
D141
R133
MA2S728 Q141
15k
DTA144EU
TXMS
R144
2.7k
R145 C142
12k 0.001
L152 L151
50nH
50nH
C151
9p
D152 C152
D151
MA77 10p
1SV307
S5V
R278 R279
3.3k
27k 2.11V
AG3V
C271 R280
47
2.2k
2.11V
C266
150p
R274 C270
2.2k 1
VOLIN
R270
15k
R272
150k
R271
56k
R273 C268
1k 0.047
C267
0.0047
AG3V
Common
Transmit
Receive
Power
supply
R275 C269 R277
180k 0.01 390k
BEEPO
R276
10k