Voltage Diagram; Main Unit - Icom IC-GM1600E Service Manual

SECTION 11

VOLTAGE DIAGRAM

11-1 MAIN UNIT

4
IC261
V+
NJM12902V
GND
11
R262
12 k
C262
C261
13
0.015 0.033
12
IC261
NJM12902V
DETMS
C272
1
0.47
DET 2
SRXMS 3
4
IC281
TC4W66FU
R5V R5V
R292 C293
68 k 0.033
4
R293
68 k
J412
5
BM02B-ASRS-TF
6
SPGO
1
AFOUT
2
J414
14FH-SM1-TB
RLED
1 R441 470 k
TLED
2
EXMIC
3 Q441 2SC4116 BL
EXDET
4
5
6
to the
7
SPG
MIC J415
8
9
AFOUT
10
Q442 RSR025N03
11
S5V
12
13
14
Q443 RSR025N03
ISPMS
EXDET
R467
270
EXPTT
Q462
UNR9111J
Q461 IC682
UNR9111J TC4W66FU
PTTIN 1 8
2 7
C465
3 6
1
4 5
C462
0.1
MC461 R718
1 k
C696
0.1
C691
0.018
S5V
IC261 NJM12902V
R272 R274
C270
150 k 1 k
0.01
9
8
R270
14 10
15 k
R275 C269
R277
180 k 0.01 390 k
AG3V
RXDEC
S5V
R399
ERJ2GE-JPW
8 1 8
7 2 7
6 3 6
5 4 5 CTFIS
IC282
TC4W53FU R283
100 k
DETOUT
DETIN
R305
100 k
R297 R298
3
10 k 4.7 k
2
1
Q291
XP4601
AFOUT
S5V
R704 100 k
ISPMS
D602
Q656 XP4313
R442
DA221
470 k
R685 4 3
S5V
15 k
5 2
R686 6 1
R687
Q652
1 k
1 k
DTC144TU
R688 82 k
Q444
UNR9213J
Q654 UNR9213J
MIC3
R702 22 k
R708
R701 3.9 k
390 k 5 1 MIC2
5 R707
3 2
8.2 k
4
1 4 3 MIC1
D603
2 MA2S111 R705
R474
Q653
18 k
5.6 k
XP1213
IC683
TA75S01F
S5V
C463 R463 R471
0.01 5.6 k 680 k
IC261
NJM12902V
6
IC261
7
2 NJM12902V
5
R709
1 AG3V
4.7 k
3
C690
0.018
R716
R711
100 k
AG3V
11 - 1
S5V
AF7V
R411 C411
10 k 0.47
IC421 TA7368F
R414
1
1.5 M
NC
2
VCC
3
NC
4
VIN
Q411 5
RIPPLE
2SC4213 B
R611
10 k
IC581
S-80942CNMC-G9C
1
OUT CD
2
VDD
3
VSS NC
RES
ESCK
ESDA
AG3V
CPU5V
C512 0.1
R512 R513
150 k 18 k
Q501
UNR9213J
R502
33 k
C504
C502
0.0015
150 P
R521 R690
680 S101 S103
ERJ2GE-JPW
EVQP2T02M EVQP2T02M
R691
ERJ2GE-JPW
UNLKI R631 10 k
EXOEO R634 10 k
VSSTBO R635 10 k
EXSTBO R636 10 k
R493
560 k
DASTBO R633 10 k
PLSTBO R637 10 k
R495
SDATAO R638 10 k
4.7 k
IC481 SCLKO R639 10 k
TC4W66FU
IC491
1 8
NJM2904V
2 7
3 6 1 8
4 5 2 7
3 6
R491
4 5
15 k
MOD
DS653
SML-311YT
EP682 CV1083
Q651
XP1213
1
2
3
10
POUT
9
PWGND
8
PREGND
7
PHASE
6
NF
CPU5V
5 1 8
A0 VCC
2 7
A1 WP
4 3 6
A2 SCL
4 5
VSS SDA
IC591
BR24L32FV-W
BEEPO
91
VSS0
CPU5V 92
VDD0
93
P60
94
P61
95
P62
96
P63
97
P64
98
P65
SQL 99
P66
100
P67
101
P40
PTTIN 102
P41
EXPTT 103
P42
BTYPE 104
P43
PTTM 105
P44
MIC1 106
PD78F0338GC-9EB (FX-2795A)
P45
MIC2 107
P46
MIC3 108
ATIS C643
P47
0.01 SQL 109
P50
UP 110
P51
DOWN 111
P52
CH/WX 112
P53
16/9 113
P54
SCAN 114
P55
H/L 115
P56
TDEC 116
P57
CP641 VOXM 117
P70/TO4
118
P71/TI4
UNLK 119
P72/TO52
EXOE 120
P73/TI52
S105
EVQP2T02M
BEEP
W/NS
VSSTB
EXSTB
EXDET
DASTB
PLSTB
SDATA
SCLK
5
4
DS681 A0286
CONT2
CONT1
R681 R682
820 k
270 k
60 SEG9
S9
59 SEG8
S8
58 SEG7
S7
57 SEG6 1 8
S6
56 SEG5 2 7
S5
55 SEG4 3 6
S4
54 SEG3 4 5
S3
53 SEG2
S2
52 SEG1
S1 IC681
51 SEG0
S0 TC4W66FU
50
SCOM0
49
COM3
48 COM2
COM2
47 COM1
COM1
IC661
46 COM0
COM0
45
VLC2
44
VLC1
43
VLC0
42
VLCDC
41 C685 0.47
CAPL
40
CAPH
39 CPU5V
AVREF1
38 ATIS
P120/AO0
37
AVSS0
36 CDECV
ANI9
35 TEMPV
ANI8
34 LOINV
P17/ANI7
33 RSSIV
P16/ANI6
32 NOISV
P15/ANI5
31 TDETV
P14/ANI4
BATTV
VOXT VOXT
WDECV
CPU5V
OSC1 C606
0.01
X601
C603
CR-747
33 P
C605
47 P
R601 10
C604
R602
0.01
1 M
R604
12 k
A
B
C
SRXMS
DET
R5V
CTFIS
DETMS
MODIN
S5V
S5V
D
E
F
CKSIS
CPU5V
AF7V
WDECV
BEEPO
BTYPE
CDECV
BATTY