Icom IC-M91D Service Manual Addendum page 7

August 2012
SECTION 7. BOARD LAYOUTS
• MAIN UNIT
(TOP VIEW)
MP362
SP1 (CHASSIS)
6
• RF UNIT (For [USA], [EXP], [AUS])
(TOP VIEW)
S250
MP22
L21
D22 Q22
Q53
C25 R28 C51
R27
Q50
C27 R55
C35
R52
C6
C33
L50
L51
R6 Q20 C54
MP22 MP20 C37 R26
D21
R30 R29 C31
R50
C30 L26
C36 R31
R120 C122
C131
X1 C20
C40
L25 R115
C21
C119
L24
Q24 R110
Q25
C22
C120 R111
C121
L97
D131
C115
C110
UNLK R104
SCKO
SDATAO D130 C112
PLSTBO
L96
LOINV
VCC
VCC FI151 FI150
S3V
GND
GND Q90
TEMPV LV
PTTIN
FCON
R95 R96
F R113
MOD
R103
MODC
PW
WETIN L93
R47 C133 C8 C99
LEDV D93
RVS
T5VS
C100 C91
TDETV
M5V C9 C95
GND D90
GND
CPU3V
D92
TXMS
DIST
NOIZU
RSSIV
C94
LOW
T1CON
SQL
DET
M5VS
GND
X170
MP25
• RF UNIT (For [CHN], [EUR], [UK], [FRG], [HOL])
(TOP VIEW)
S250
MP22
L21
D22 Q22
Q53
C25
R28 C51
R27
Q50
C27
R55
C35
R52
C6
C33
L50 L51
R6 Q20 C54
MP22 MP20 C37 R26
D21
R30 R29 C31 R50
C30 L26
C36 R31
R120 C122
C131
X1 C20
C40
L25 R115
C21
C119
L24
Q24 R110
Q25
C22
C120 R111
C121
L97
D131
C115
C110
D130
UNLK R104
SCKO
SDATAO C112
PLSTBO
LOINV L96
VCC
FI151 FI150
VCC
S3V
GND
GND Q90
LV
TEMPV
PTTIN
FCON
F R95 R96
R113
MOD
R103
MODC
PW
WETIN R47 C133 C99 L93
C8 D93
LEDV
RVS
T5VS
C100 C91
TDETV
C9 C95
M5V
GND
D90
GND
CPU3V
D92
TXMS
DIST
NOIZU
RSSIV C94
LOW
T1CON
SQL
DET
M5VS
GND
X170
MP25
The combination of top side and bottom side of this
C63
C69
C65
MP26
C75
Q54
C62
L55
C70
C71
L57
R380
C81
D91
C82
C73
L58
C90
C83
L90
C84
D353
• MIC UNIT
L82
(TOP VIEW)
C63
C69
C65
MP26
C75
Q54
C62
L55
C70
C71
L57
R380
C81
D91
C82
C73
L58
C90
C83
L90
C84
D353
L82
J292
EP6
EP7