Icom IC-M402

11 - 4
11-4 HM-129
CHASSIS UNIT W1
to MAIN unit J4
to LOGIC board J3
PTT
MIC
UP
DN
16/9
MC1
C1
470 P
R1
12 k
W2
W1
S1
S2 R2
6.8 k
S3 R3
15 k
R4
33 k
S4
PTT
MICG
MIC
GND
1
2
3
4
PTT
MICG
MIC
PTTG
KEYM
GND
1
2
UP_ON 2.0V
DN_ON 3.0V
16/9_ON 3.8V