Icom IC-M412 Service Manual page 43

Oct. 2010
• MAIN-A UNIT
(BOTTOM VIEW)
BPFV
R5V
5V
SQL
R8V
HV
GND
TMUTE
TXDET
T5
TMUTE
CK
DA STB
UL
DSCENC
DSDEC
BPFV
KEYM
• LOGIC-A UNIT
(BOTTOM VIEW)
GND
R5
SEND
SP-
RCV
SP+
VCC
SQLV
5V
VBIAS
AF5
DETM
VCC
BEEP
C3
C2
IC8
J1
C107 C110 J1
ICF3
X1
C34
C49
R74
R41 IC1
C44
C41
R55
R54
R60 C21
R31
C51
R32
CH
R63
DTRS
MENU BE
IC3
5V
BPFV
ENT
R81
GND
CLR
B7428A
R71
SCAN
VCC
• VR-A UNIT
(BOTTOM VIEW)
B-7473
8
J3
J3
C91
C93 C92
SP-
R86
C125
C96 R104
D4
C95
R89 R85
C97
SP+
R98 Q4
C98
R102
R84
C99
R35
GND
DSCENC
R24
UP
CH16
IC2
DOWN
• SQL-A UNIT
(BOTTOM VIEW)
B-7474