11-1 GENERAL
SP+
SP1
045P0803
SP–
J1
30FLT–SM–TB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
J1
30FLT–SM1–TB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
W1
OPC-1264
1
2
3
4
5
6
7
8
J1
B5B–ZR
1
1
2
2
3
3
4
4
5
5
J1
B3B–ZR
1
2
3
J2
B4B–2R–SM3–TF
1
2
3
4
J2
B5B–PH–K–S
1
1
2
2
3
3
4
4
5
5
GND
MIC
MICG
PSTB
GND
PCK
PDATA
UNLK
SP–
RMUTE
VCC
GND
BEEP
OPC-1263 (FRONT unit; W3)
SP+
BPLVL
5V
5V
RCV
SEND
TMUTE
TXDET
DSCENC
H/L
DSCDEC
SQLC
WXDEC
BPF
PTT
SQL
PTTC
5V
SP–
SP+
BEEP
5V
BPLVL
VCC
GND
SQLV
SQLI
HV
GND
VOL2
VOL1
HVS
SQLI
GND
SQLV
VOL1
HVS
HV
GND
VOL2
PTT
MICG
PTT
GND
MIC
KEYM
ICF3
NMEA+
NMEA–
KEYM
KEYM
GND
RCV
DSCENC
WXDEC
PTTC
PCK
KEYM
RMUTE
SEND
H/L
BPF
PDATA
TMUTE
DSCDEC
PTT
PSTB
UNLK
GND
TXDET
SQLC
SQL
GND
SQLV
SQLV
FRONT UNIT
LOGIC BOARD
MAIN UNIT
VR BOARD
SQL BOARD
HM-141
SECTION 11
VOLTAGE DIAGRAM
11 - 1
Summary of Contents for IC-M302
Page 1: ...SERVICE MANUAL VHF MARINE TRANSCEIVER M302 ...
Page 29: ... BOTTOM VIEW DS4 DS5 DS7 DS6 DS2 DS3 9 4 ...
Page 30: ...J 1 R 1 1 5 HVS VOL1 VOL2 GND HV J1 to the MAIN unit W1 9 3 VR BOARD TOP VIEW BOTTOM VIEW 9 5 ...
Page 31: ...J 1 R 1 1 3 SQLI SQLV GND J1 to the MAIN unit W1 9 4 SQL BOARD TOP VIEW BOTTOM VIEW 9 6 ...
Page 32: ...9 7 R1 R3 R2 S2 S3 S4 R4 9 5 HM 141 TOP VIEW ...
Page 33: ...9 8 BOTTOM VIEW C1 S1 ...
Page 40: ......
Page 41: ...1 1 32 Kamiminami Hirano ku Osaka 547 0003 Japan S 14011IZ C1 2003 Icom Inc ...