Icom IC-M32 Service Manual page 27

SECTION 11 VOLTAGE DIAGRAM
MAIN UNIT
5V
DET
C261
0.1
5V
R251 R260 R261
470 12 k 3.9 k
R263
C251 C260 100 k
R262
10 10
1.8 k
R256
18 k
Q250
UN911H
PTT
C376
0.1
C250 R250 R375 C257
0.01 100 k 6.8 k 0.01
MIC
CP250
MC250
IC260
SKB-2746 LPC
TC4W66F
DETO 1
DETIN 2
MICM 3
C252 R252
4
0.001 33 k
PTTSW
S250
R264
100 k
CP253 CP255
J250
HSJ1594-010050
CLONE CLONE
SPO SPO
AFOUT AFOUT
MIC MIC
GND GND
CP251
CP254
J251
BM02B-ASRS-TF
SPO SPO
4 1
GND
3 2
SP1
036D0801B
S320 S323
16 SCAN
S321 S324
UP CH/WX
S327
S322
DOWN SQL
MAIN UNIT
R201 R203 R207
27 k
15 k 1.2 M
R378 R379
R377
82 k 82 k
82 k
C202 R206
0.1
18 k
1.90V C377
C378 C207
820 P 0.0047
0.1
R213
R212
68 k
1.5 k
C205 R214
R205 R204 R376 C206
0.018 15 k 0.001
8.2 k 4.7 k 100 k
R277
100 k
R202
IC200
100 k
NJM2902V
1 14
2 13
3 12
R276
5V 4 11
180 k
5 10
6 9
C379
7 8
56 P
C200
0.01
C268
R279
0.1
820
C254 R253 R255
2.2 k
0.01 150 k
R271
R272
33 k
180 k
WDECV
C265
R281
150 P
R273
18 k
8 5V
C262
7 DETM
R258
0.01
6 MICO
4.7 k
R257
5 MICIN C264 R278 C266
4.7 k 0.0047
1 k 0.027
DETM
R300
6.8 k
ATIS
R265
C300 C361
100 k
0.0033 0.047
MICM
C350
0.01
R350
470 k
AFOUT
CLONE
CP252
CPU5V
D350
R352
DA221
15 k
R353
1 k
CPU5V
Q350
DTC144TU
R351
1 k
C340
S329
0.01
H/L
C351 C352
47 P
47 P BR24L16FV-WE2
S328
S325
VOLUP
S326
VOLDOWN
C382
0.001
MOD
RSSIV
VOLIN
BEPST
NOISV
BEPO
VOLO
AFV
C282 C283 C284
10 0.1 0.001
R288
220 k
R289
IC280
150 k
TA7368F
1 10
POUT
NC
2 9
VCC PWGND
3 8
NC PREGND
4 7
VIN PHASE
5 6
RIPPLE NF
R284
R283
R274
10 33
390 k
C263
0.01 C289 C288 C286 C287
150 P
220 0.047 10
AFOUT
R275
10 k
VOLIN
C267
0.22
C280
R290 R286
0.47
33 k 10 k
Q280
2SC4213 B
33 k
C367 C363 C365 C364
0.033 0.047 0.047 0.047
C281 C285
R282
10 k 0.47 0.1
TEMPV
C366
0.047
WET
CP350 CP351 CP352
PWSW
R360 1 k
UNLK
CP353 CP354 CP355 R361 1 k
SCK
R363 1 k
SDATA
R346
10 R362 1 k
PLST
BTYPE
R364 1 k
DAST
ESCK
R345
470 k ESDA
CPU5V
R340 R341
IC340 10 k 10 k
1 8
A0 VCC R343
2 7
100 k
A1 WP
ESCK IC341
3 6
A2
SCL
ESDA
4 5 BD5242FVE-TR
VSS SDA
1 5
VOUT VDD
2
SUB
3 4
CT GND
C341
0.027
BEEP
CPU5V CPU5V
R374 R373 R372 R371
68 k 100 k 100 k 100 k
C373 C374 C375
0.1 0.1 0.1
COM0
COM1
COM2
C360 R367
0.01 470 k
RSSIV 1
P67/AN7
NOISV 2
P66/AN6
BATTV 3
P65/AN5
TDETV 4
P64/AN4
TEMPV 5
P63/SCLK22/AN3
SCK 6
P62/SCLK21/AN2
SDATA 7
P61/SOUT2/AN1
WDECV 8
P60/SIN2/AN0
ATIS 9
P57/ADET/DA2
LEDS 10
P56/DA1
TXMS 11
P55/CNTR1
IC360
BEEP 12
P54/CNTR0
M37560M8A-700GP
PLST 13
P53/RTP1
DAST 14
P52/RTP0
5VS 15
P51/PWM1
16
P50/PWM0
17
P47/SRDY1
ESCK 18
P46/SCLK1
CLOUT 19
TXD
CLIN
20
RXD
CHEXT 21
P43/TOUR
PWSW 22
P42/INT2
UNLK 23
P41/INT1
ESDA 24
P40
25
P77
CP361
WET
C372
0.1 R305
47 k
CP360
RESET
R304
47 k
C368
0.047
11 - 1
A
5V
DET
MOD
RSSIV
VOLIN
BEPST
NOISV
BEPO
BEEP
VOLO
AFV
B
C
CPU5V
DS246
L3-0015TAY-1
SEG0 1
SEG0
SEG1 2
SEG1
SEG2 3
SEG2
SEG3 4
SEG3
SEG4 5
SEG4
SEG5 6
SEG5
7
SEG6
SEG6
SEG7 8
SEG7
SEG8 9
SEG8
SEG9 10
SEG9
SEG10 11
SEG10
SEG11 12
SEG11
SEG12 13
SEG12
14
SEG13
SEG13
SEG14 15
SEG14
SEG15 16
SEG15
SEG16 17
SEG16
SEG17 18
SEG17
SEG18 19
SEG18
SEG19 20
SEG19
SEG20 21
SEG20
22
SEG21
SEG21
COM0 23
COM0
COM1 24
COM1
COM2 25
COM2
75 SEG13
SEG13
74 SEG14
SEG14
73 SEG15
SEG15
72 SEG16
SEG16
71
SEG17
SEG17
70 SEG18
P30/SEG18
69 SEG19
P31/SEG19
68 SEG20
P32/SEG20
67 SEG21
P33/SEG21
66
P34/SEG22
65
P35/SEG23
64
P36/SEG24
63
P37/SEG25
62
P00/SEG26
61
P01/SEG27
60
P02/SEG28 R366
59
P03/SEG29 47 k
58
P04/SEG30
57
P05/SEG31
56
P06/SEG32
VOLUP
55
P07/SEG33
54 DETM
P10/SEG34
53 MICM
P11/SEG35
52 AFVS
P12/SEG36
51 R5VS
P13/SEG37
X360
CSTCR7M98G53-RC
C370 C371
18 P
22 P
7.9872 MHz : 3.10 Vp-p
Explanatory notes
+B LINE
TX LINE
RX LINE