Icom IC-M45 Service Manual

SECTION 8 BOARD LAYOUTS
8-1 LOGIC, VR-A AND VR-B UNITS
8-1-1 TOP VIEW
•
LOGIC UNIT
8 - 1
DS2
DS3
Q5
C20
C21
R26
R23
R33
R31
R32
C19
R29
R34
R2
R1
C5
R16
C9
C18
R14
R11
C6
R6
R13
R9
R7
R17
C8
R12
R10
C17
C1
R4
C2
R5
C7
R8
R15
R20
R21
R24
C15
R25
R22
C16
R30
C14
C4
C3
C13
R3
R27
C11
R28
C12
R19
R18
Q4
C10
IC1
X1
J1
1
1
D4
IC4
J2
IC2
Q3
D3
IC3
Q2
D1
Q1
D2
SP+
SP+
SP—
SP—
GND
BEEP
PTT
ICF3
HANG
TXDET
OEX. OE
P. STB
OEX.STB
TONE
S.METER
SQL
PTT. S
UNLK
CK
DATA
DATAM
DATAS
SQLV
BUSY
GND
GND
F. MODE
HVS
NC
5V
1
30
J1
TO MAIN
UNIT J4
KEY.M
GND
J2
1
2
FROM
MICROPHONE
R1
1
HV
GND
VOL2 VOL1
HVS
15
J2
TO MAIN
UNIT J1
J1
1
R1
SQLG
SQLV
SQLI
13
J1
TO MAIN
UNIT J1
•
VR-A UNIT
•
VR-B UNIT

Icom IC-M45 Specifications

General

Brand	Icom
Model	IC-M45
Category	Transceiver
Language	English