Icom IC-M35 Service Manual page 27

SECTION 10. VOLTAGE DIAGRAM
R251
270
EXPTT
ON :4.81V
OFF:0.00V
Q251
EXPTT
KRA302E
PTTIN
KRC404E
ON :4.82V
OFF:0.00V
Q250 Q362
PTTIN
KRA302E
R270
10K
MC250
EM6027P
C253
PTTSW
0.047
22K
2
1
R434
J253
C383
1
BM02B-ASRS-TF
MICMS
DETMS
PTTM
R438
100K
LM2904PWR
2
C428
1
3
W1 0.018
IC363
ERDS2T0
W2
ERDS2T0
HSJ1594-010150
CLONE
SPO
MMZ1608Y102B T
AFOUT
MIC
EP5
GNDE
J250
R346
KEY
KEY
100K
S320 S323 S326
16/9 SCAN H/L
KEY KEY 1SS355 R351
S321 S324
S327
D350 33K
UP CH/WX FAV
KEY R449
S322
S325
S328
18K
Q350
DOWN SQL VOL
2SC4116
S5V
IC190
1
VIN1 VIN8
2
VOUT1 VOUT8
3
VOUT2 VOUT7
4 8 4
VIN2 VIN7
V+ V+ 5
VDD GND
GND GND 6
DAST
LD RESET
11 4 7
CLK VDAREF
8
DI DO
9
R192
IC200 IC363 VIN3 VIN6
MCON 10
LM2902PWR LM2904PWR VOUT3 VOUT6
11
390 VOUT4 VOUT5
12
VIN4 VIN5
M62364FP
0.22 ECJ10 6.3V B
1.89V
*C261
470K
180K 0.01
R388
C263
R276
100K
R263
LM2902PWR
9
IC260
100K
1 14 8
I/O1 VDD R277
2 13 10
O /I1 CONT 1
3 12 IC200
O /I2 CONT4
4 11 DETIN
I/O2 I/O 4 33K R272
5 10 DETO
CONT 2 O /I4
6 9
CONT 3 O /I3 R271 120K
7 8
VSS I/O 3 R273
CD4066BPWR
22K
1.88V
R255 R203 R207 R377 R378
470K 220K 27K 82K 82K
LM2902PWR
6 2
7 1
100K
5 3
R202
IC200 I C200
1.84V
LM2902PWR
R376
100K
R443
1.8K
R442 100K
LM2904PWR
6
D354
7
C429
5
KDS160E
0.018
IC363
150
1
OUT_A
2
C286 VCC
3
OUT_B
150
4
GND
C289
NJM2073M
CPU5V
R352
J252
6.8K
2 1
4 3
6 5
Q361 TC7W04FU 1
2
2SA1586 06FLT-SM2-TB
5 4 3
6 3 4
7 2
R456
8 1
4.7K
I C364
10 - 1
CPU5V
24
23
22
21
20
19
18
17
16
15
14 VOLOUT
13
DET
R274 R288
100K
4.95V
390K 220K R402
0.1
C285
R279
KRC404E
Q 358
1.5K
C265
120P
91
92
93
94
95
96
TXM S 97
DETMS 98
ATTS 99
100
101
PTTM
102
EXPTT
PTTIN 103
R212 R213
C378 C207
BTYPE 104
BPCTRL 105
0.0047 0.1
1.5K 68K
WET 106
LM2902PWR
PON 107
13 16/9 108
14 CH/WX 109
R379
12 110
UP
111
DOWN
82K
112
I C200 FAV
VOL 113
SCAN 114
SQL 115
H/L 116
KEYM1 117
KEYM2 118
KEYM3 119
120
UNLK
R427
270
TX:0.00V
RX:7.39V
Q230
AFV RSQ035P03TR BEEP
CP360
CP10S
PS
IC362
8
-IN_A
7
+IN_A
6 KTC811U
+IN_B
5 Q231
-IN_B
CPU5V
I C341
I C340 1 5
OUT CD
8 2
A0 VCC VDD
7 3 4
A1 WP VSS NC
6
A2 SCL
5
S-80942CNMC
VSS SDA
S-24CS64A0 I
S11000
DS246
LEDON
4.93V
KRC404E
Q240
60
SEG9
59
SEG8
58
SEG7
57 SEG6
56 SEG5
55 SEG4
54 SEG3
53 SEG2
52 SEG1
51 SEG0
50
49
IC360 48 COM2
47 COM1
46 COM0
UPD780318GC-512-9EB-A
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
TDEC
DASTB
SDATAO
SCLK
X360
CR-834
7.9869MMHz
4.20VP-P
S5V
DETDET
MOD MOD
MOD
R373
1M
A TIS
Q352
KRC404E
LCDS
EXDET
WDECV
PWSW
DET
NOISV WE T
RSSIV
BATTV
KEYM3
KEYM2
KEYM1
CPU5V
*; Refer to "PARTS LIST."