Icom IC-M73

8 - 1
SECTION 8
.
BOARD LAYOUTS
The combination of top side and bottom side of this
• RF UNIT
(TOP VIEW)
• MAIN UNIT
(TOP VIEW)
• VR UNIT
(TOP VIEW)
• MIC UNIT
(TOP VIEW)
J1 (CHASSIS)
SP+ 1 SP− 2
SP1 (CHASSIS)
PCON
T5VS
TEMPV
PLST
UNLK
SDATA
SQL
POW
2NDLO
PTTIN
SCK
MOD
GND
GND
GND
GND
GND
GND
FCON
VCC
VCC
IF
TXMS
TDETV
MODCO
R5V
NC
LOINV
TCON/LOW
5V
142SD042SD
DS242 DS243
152SD052SD
DS252 DS253
J251
MC250
S1
S2
S3
S4S5
S6
S7
S8
H0H5H10H15H20H25H30H35H40H45H50H55H60H65H70H75H80H85
V0 V5 V10 V15 V20 V25
V30 V35 V40
C7
C9
C11
C12
C13
C15
C18
C24
C44
C46
C50
C51
C52
C53
C54 C55
C56
C57
C58 C59 C60
C61
C62
C63
C64
C65
C66
C67
C68
C69
C70
C71
C72
C73
C74
C77
C78
C80
C81
C82
C83
C84
C85
C86
C89
C122
C125
C126
C131
C155
C220
C223
C225
C380
C381
C400
C401
C402
D3
D50
D51
D52
D91
D354
EP2
EP3
IC1
IC2
IC50
J101
L1
L26
L50
L51
L53
L55
L56
L57
L58
L80
Q3
Q50
Q53
Q54
Q100
Q222
Q351
R8
R10
R11
R12
R13
R22
R36
R50
R52
R53
R54
R55
R56
R57
R65
R66
R67 R68
R69 R70
R71
R72
R73
R74
R75
R76
R80
R81
R120
R224
R225
R230
R380
R381
R382
R383
R384
R386
S250S328
B7815B
1
H0H5H10H15H20H25H30
V0
V5
V10
V15 V20 V25 V30 V35
V40
J416
B7817A
H0H5H10
V0 V5
R801
H0H5
V0 V5 V10