Icom IC-M91D Service Manual Addendum page 10

August 2012
• MAIN UNIT (1/2)
R251
270
R192
390
MC250
EM6027P
C382
1
R634
15k
2SA1832
Q251
LDTC144EE
Q250
TX EXT :3.27V
TX INT :0.00V
RX :0.00V
TX EXT :0.00V
TX INT :3.30V
RX :0.00V
R519
10k
CP16
CP10S
CP17
IC362
1 GND1 20
CP10S VCC1
2 NC 19
NC
3 OUT1+ 18
OUT1-
4 MODE 17
IN1-
5 SVRR 16
IN1+
6 SELECT 15
IN2+
7 NC 14
IN2-
8 OUT2+ 13
OUT2-
9 NC 12
NC
10 GND2 11
VCC2
TDA8547TS
LDTC144EE
Q400 R518
10k
Q371
LDTC144EE
INT SP : 0.00V
EXT SP : 3.30V
1.75V
IC190
1 VIN1 24
VIN8
2 VOUT1 23
VOUT8
3 VOUT2 22
VOUT7
4 VIN2 21
VIN7
5 VDD 20
GND
6 LD 19
RESET
7 CLK 18
VDAREF
8 DI 17
DO
9 VIN3 16
VIN6
10 VOUT3 15
VOUT6
11 VOUT4 14
VOUT5
12 VIN4 13
VIN5
M62364FP
R388
470K
0.22
C254
IC260
1 I/O1 14
VDD
2 O/I1 13
CONT1
3 O/I2 12
CONT4
4 I/O2 11
I/O4
5 CONT2 10
O/I4
6 CONT3 9
O/I3
7 VSS 8
I/O3
CD4066BPWR
C385
6 5
4 3 0.01
2 1
J290
C286
150
INT SP : 4.68V
R633
0.047
EXT SP : 7.36V
C630
10
TPC6103
AFV Q230
R512 R511 C511
22k 1k 1
R230
68k
C633
0.1
R515 R514
C512
390k 8.2k 0.22 22k
R510
Q370
1.2k C515
LDTC144EE
R289 1
INT SP : 0.00V
EXT SP : 3.30V
CPU3V
LMV324IPW
13
R559
14
R557
12
IC363 1.5k
100k
R554 R555
C551 C553
0.1 24k 120k 100P
R556
22k
R550 R551
C550
1
10k 10k
2
1
R552
3
IC363
100k
LMV324IPW
R253 330
2.7k R205
R255
330k
1.75V
C650
6 TC7W53FK
7
R256 10P A
5 5
6 CH1
18k CH0
IC200 7
VCC
LMV324IPW 8
C632
RXOUT T5VS
1
LMV324IPW
9 IC363
100K R279 R286
8 VOLIN
R277
10
1.5K 8.2k
R272
24k C265
R271 120K 180P
R273
22K
R414 100k R413
BEEPO
100k R412 10k
LMV324IPW
C651
9
8
100P
10
IC200
R201 R203 R207 R377 R378 R212 R213
C378
2.2K 180k 39k 82K 82K 0.0047 LMV324IPW 1.5K 100k
2 13
1 14
R379
100K
3 12
82K
R202
IC200 IC200
LMV324IPW
R376 R206
C202 R300
100K 18K 0.1 6.8K
. 1 7 1 V
. 1 7 2 V
C468
4.7
ON : 3.30V
OFF : 0.00V
Q231
KTC811U D358
Q354
LDTC144EE
Q401
LDTC144EE LDAN222
47
R500
TC7W53FK
5 A GND
4
IC365
6 CH1 VEE
3 1 V+ 14
7 CH0 INH CAP
C500
2 2 IN 13
8 VCC COM CAP
1 3 LOCK 12
0.01
R
IC366
4 GND 11
LOOP
5 Q 10
REF
6 Q 9
NC
7 DATA 8
FSK
NJM2211M
R503
100k
GND
VEE 4
INH 3
COM 2
1
IC380
NC_BUSY
R631
SCKO
10k
R632
SDATAO
10k
BEEP
C207
MOD
0.1
DSCSET
7
IC363
PW
*: Refer to the PARTS LIST for the value and name of component.
9
VCC
4 4
V+ V+
GND GND
11 11
IC363 IC200
LMV324IPW LMV324IPW
0.1
C566
0.1
C565
0.1
C564
680 0.033
C562
R570
0.0033
C561
0.1
C563
0.1
C560
C574
0.1
C573
0.1
LMV324IPW
5
6
R458
4.7k