![background image](http://html.mh-extra.com/html/icom/ic-m220/ic-m220_service-manual_612744023.webp)
The actual configuration of the PC board can be seen by viewing the top and bottom BOARD LAYOUT pages together.
See the PARTS LIST H/V location on the PARTS LIST for location details.
7-2
• MAIN UNIT (B-8866C: BOTTOM VIEW)
1
GND
HV
MP5
C339
C338
C337
C323
C245
C239
C238
C237
C223
C220
R753
R746
R745
R744
R740
R738
R736
R737
R735
R733
R732
R731
R552
R551
R511
R344
R343
R214
R213
R212
C242
R112
R111
R110
R109
R108
R107
R106
R105
R104
R103
R10
2
R101
R100
R99
R86
R85
R84
R83
R82
R81
R80
R79
R78
R35
EP701
C773
C771
C750
C745
C743
C742
C741
C737
C738
C732
C627
C626
C625
C624
C623
C563
C561
C311
C211
C154
C153
C151
C150
C149
C148
C147
C146
C139
C138
C137
C136
C135
C134
C133
C132
C131
C130
C129
C128
C127
C126
C125
C124
C120
C92
C91
C48
R561
R75
Q202
Q201
Q101
Q19
Q17
Q16
L112
L111
L108
L107
L106
J2
IC702
IC703
IC2
D16
D11
C764
C763
C746
C622
C249
H0
H5
H10
H15
H20
H25
H30
H35
H40
H45
H50
H55
H60
H65
H70
H75
H80
H85
H90
H95
H100
H105
H110
V0
V5
V10
V15
V20
V25
V30
V35
V40
V45
V50
V55
C747
C748
C749
DC Power Cable
1
J2
NMEAI
−
NMEAI+
NMEAO
−
NMEAO+
SP+
SP
−
J2