Icom IC-M91D Service Manual Addendum page 11

August 2012
• MAIN UNIT (2/2)
R621
100k
C623
33P
IC384
R637 R638
1 VIN 5
VOUT
2 GND
22 3.9
3 CTRL 4
NC
NJU7772F05
5.01V
R623
240k
S326
S328
KEY
KEY
S324 S320
S1 CLR RIGHT CH16
S322
S329
KEY KEY
S321 S325
S2 UP ENT DOWN
S333
S330
S327
KEY
S323
S3 MENU LEFT MONI
S331 S332
S4 PSW
S3V
VCC
VCC
CPU3V
BLM18RK102SN1
1.12V
EP12
IC383
1 ADJ2 10
SW2
2 MODE/DATA 9
EN2
3 VIN 8
GND
4 FB1 7
EN1
5 DEF_1 6
SW1
TPS62400DRCR
BLM18RK102SN1
10 9
EP11 8 7
6 5
4 3
2 1
J271
1.83V
LDTC144EE
Q380
1 5
2
3 4
IC372
SN74AUP1T17DCKR
LEVEL7 : 4.64V
36 35
IC220
34 33
1 VIN 5
32 31 VOUT
2 GND
30 29
3 CTRL 4
28 27
NC
26 25
NJU7772F33
24 23
22 21
20 19
18 17
16 15
14 13
12 11
10 9
8 7
6 5
4 3
2 1
J280
10
CP10
CP11 CP10S
CP12 CP10S
BOOT
JTCK 109
CP13 CP10S
JTDI 110
G_TXD 111
CP10S CP14
G_RXD 112
113
CLOTXD
CP10S CP15
114
DTEST
115
CP10S
CLORXD 116
PON 117
T5VS 118
TXMS 119
120
121
RVS 122
RINTM 123
CD 124
CS 125
126
RESETB
127
CSHIFT
128
129
130
131
AFVCTRL 132
133
JTDO
NJRST 134
UNLK 135
DIMM 136
137
BOOT 138
139
NC_RESET
140
NC_PDN_PTT
ECK 141
EDATA 142
143
144
KTA1664
Q240
R627
0
L2SC4081
Q382
R625
220k
7.98MHz
352mVp-p
1k
Q361
D350 R351
L1SS400 L2SA1576AS
TC7WH14FK
R449
5
47k
6
Q350
7
L2SC4081
8
IC364
1k
R361
R601
DB7
100k
DB6
R600
72 DB5
71 DB4
100k
70 DB3
69 DB2
68
DB1
67
DB0
66
65 WR0
64 PLSTB CD
63 DASTB RESETB
62 CS
61
60
59 SCK
58 SDATA
57 DB1
IC360
56 DB0
55
STM32F100ZET6B(FX-3338A-2) EXPTTIN
54
MONI
53 PTTIN
52
51
50 S4
49 S3
48
47 EXTDET
46 BATTV
45 RSSIV
44 NOISEV
43
42
VER
41
BEEP
40 DSCOUT1
39
38
TEST1
37
CP361
MUTE
X360
VER
CR-834
3.30V
CPU3V
IC340
1 A0 8 NJU7704F3
VCC
2 A1 7
WP 4 VOUT
3 A2 6
SCL
4 VSS 5
SDA 5 VDD
R395
4 BR24T256FJ
IC341
3
100K
2
1
*: Refer to the PARTS LIST for the value and name of component.
R606
3.3M
C525
2.2
C526
2.2
R605
100k
MR
VSS 3
CD 2
1