Icom IC-F4029TDR Service Manual Addendum page 10

Feb. 2012
CONNECT UNIT
J901
L901
2 BLM21P300S
HV
1
C905 C906 C901 C902
47p 0.001 0.001 47p
F701
VCC 2 1 PA-C UNIT
TO CONNECT
UNIT J901
L706
EXCCL3225U
VCC
T5V
C736 C737
0.5p 0.5p
C733
J703 C731
3p 3p
TX
4
GND
TO MAIN 3
T5V
UNIT TX: 0.76V TX: 0.76V
2
VCC RX: 0V RX: 0V
1
Q704 Q703
2SC5006 2SC3356 R25 YS
Q701
RD07MVS1
Q702
C720
C729 RD01MUS1
47p
6p
R704
10
MP701
PA heat sink
APCV
C765
0.001
T5V
R728
47
TX: 2.25V
RX: 0V
5 3
APCV 4
1
R726
2
1k
IC701
TA75S01F F
L704 L703
C701
0.4-0.9-2TL 0.4-0.9-2TL
0.001
Explanatory notes
D702
LRB706F
TX LINE
RX LINE
COMMON LINE
VOLTAGE LINE
TX: 0.08V
RX: 0V
R722
27k
T5V
TX: 0.86V
RX: 0.25V
J702 L712
C752
18nH
8p
RX
1
GND
TO 2
APC
MAIN UNIT
3
4
TO ANT UNIT J701
L710 L709 C742
LPF
15nH 15nH 0.001
GND GND
OUT IN
GND GND
C747
0.5p
C745
3p
TX
TX
GND
MP801 ANT-C UNIT
BAT
BATTERY
CONNECTOR
GND
J2
VCC
7.2V
R725
390k
D701
1SV307
TX: 0.2V
RX: 0V
MEASUREMENT
FREQUENCY:
446.00625 MHz
J1 (CHASSIS)
GND
10