Hm-164B/Sw/G - Icom IC-M304 Service Manual

Vhf marine transceiver
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SECTION 12

HM-164B/SW/G

• REPLACEMENT UNIT
ORDER NO.
UNIT NAME
Optional product
HM-164B
Optional product
HM-164SW
[Super White]
Optional product
HM-164G
• CHASSIS PARTS LIST
REF
ORDER
DESCRIPTION
NO.
NO.
W1
8900012212 OPC-1249B
[Black]
8900013570 OPC-1406
[Super White]
8900012502 OPC-1285B
[Gray]
MP1
8210023240 2995 FRONT PANEL
[Black]
8210023250 2995 FRONT PANEL (A)
[Super White]
8210023660 2995 FRONT PANEL (B)
[Gray]
MP2
8210020120 2715 REAR PANEL
[Black]
8210021240 2715 REAR PANEL (C)
[Super White]
8210020380 2715 REAR PANEL (B)
[Gray]
MP3
8930060910 2715 KEY
[Black], [Super White]
8930061150 2715 KEY (A)
[Gray]
MP4
8930060920 2715 PTT RUBBER
[Black], [Super White]
8930061160 2715 PTT RUBBER (A)
[Gray]
MP5
8930061970 2715 A-PTT HOLDER
MP6
8930060940 2715 RUBBER
[Black], [Super White]
8930061810 2715 RUBBER (A)
[Gray]
MP7
8930060930 2715 MAIN SEAL
MP8
8610011600 2715 HANGER KNOB
MP9
8930060951 2715 BUSH PLATE-1
MP10
8930060990 2715 MIC SHEET
MP11
8930061000 2715 MIC TAPE
MP12
8930070800 2715 VENT SHEET
MP13
8930060960 O-RING (AY)
MP14
8930060970 O-RING (AZ)
MP15
8820001260 2715 SCREW 2.6X18 SUS
MP16
8810010230 Screw BiH M4X8 ZK
MP17
8850002000 SPRING WASHER M4 SUS
MP19
8810010240 Screw BT B0 2X6NI
MP20
8930061700 2715 PTT PLATE
Screw abbreviations A, B0, BT: Self-tapping PH: Pan head
ZK: Black NI-ZU: Nickel-Zinc SUS: Stainless
• EXPLODED VIEW
MP19(C)
MP4(C)
MP5(C)
MP20(C)
MC1(M)
MP12(C)
MAIN UNIT
MP3(C)
MP7(C)
MP1(C)
• DIMENTIONS
[Black]
[Gray]
62.5 (2
15
/
)
42 (1
21
/
32
QTY.
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
5
1
5
1
1
2
1
MP15(C)×5
MP13(C)×5
MP14(C)
MP16(C)
MP17(C)
MP9(C)
MP2(C)
MP6(C)
W1(C)
12 - 1
• MAIN UNIT PARTS LIST
REF
ORDER
NO.
NO.
L3
6180003720 COL
L4
6180003720 COL
R1
7010007590 RES
R2
7010007600 RES
R3
7010007610 RES
R4
7010007620 RES
C1
4030018660 S.CER C1608 JB 1H 223K-T
7
)
5.5 (
/
32
)
C2
4030018670 S.CER C1608 CH 1H 471J
32
MC1
7700002640 MIC
S1
2260002780 SW
S2
2260002790 SW
S3
2260002790 SW
S4
2260002790 SW
W1
9027150010 WIR
W2
9027150010 WIR
M.=Mounted side (T: Mounted on the Top side, B: Mounted on the Bottom side)
UNIT; mm (inch)
MP8(C)
• VOLTAGE DIAGRAM
H/V
DESCRIPTION
M.
LOCATION
SP0203-R22K-PF 0.22U
SP0203-R22K-PF 0.22U
RD1/4S 123JTA
RD1/4 682JTA
RD1/4 153JTA
RD1/4 333JTA
B
36.85/70.8
KUC3523-040245
SKHHLPA010
SKHHAMA010
SKHHAMA010
SKHHAMA010
71/98/010/X98/X98
71/98/010/X98/X98
S.=Surface mount
MC1
L4
0.22u
L3
0.22u
W2
S1
W1 (CHASSIS)
[PTT]
W1
1
PTT
1
MICG
2
2
3
MIC
3
GND
4
R2
4
S2
KEYM
5
5
[Y]
6.8k
UP ON
2.0V
DN ON
3.0V
R3
S3
HI/LO ON 3.8V
[Z]
15k
R4
S4
[HI/LO]
33k

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