Icom IC-A22 Service Manual page 40

A
B
C
D
E
IC-A22/E ONLY
R6131
39k
TX: 0V
RX: 0V
VOR: 1.9V
R6127
220k
F
DET0
C6116 R6101
0.1 220k
Q6108
XP4315
NAV
TX: 0V TX: 0.55V
RX: 0V RX: 0.55V
VOR: 5V VOR: 5V
G
H
I
J
MEASUREMENT CONDITION
VOLTAGE: 12.0V
VOLTMETER:50kΩ/V DC
FREQUENCY: 127.025MHz(VOR: 113.000MHz)
(NO MODULATION)
IC6106
NJM2903V
1 8
2 a 7
b R6144
3 6
15k
D6115 MA111
4 5
IC6105
NJM2902V
1 14
2 13
3 12
C6122
a d
4 11
0.1
5 b c 10
6 9
7 8
C6121 R6139 R6140
3.3 18k 4.7k
R6141
TBPS1S333K460H5Q
C6117
0.01
C6116
0.01
+5
TX: 4.9V
RX: 4.9V
VOR: 4.9V
TX: 0.1V TX: 0.35V
RX: 0.1V RX: 0.35V
VOR: 0.55V VOR: 1.1V Q6110
UNR9213J(A22/E)
D6116 UN9213(A3/E)
MA111
R6137
330k
C6119
0.01
Q6109
2SC4211
TX: 0.1V
RX: 0.1V
VOR: 0.75V
TX: 3.6V
MC6001
RX: 5V
EM-140
INTMIC
C6131 R6147
10 18k
IC6107
NJM2904V
1 8
C6129
0.0047
2 a 7
b
3 6
4 5
C6126
0.1
R6150 R6151
20k 500k
IC6108
NJM2903V
1 8
2 a 7
b
3 6
4 5
PTT UNIT
J6003 J9001
S9001 S9003
(PTT) (ANL)
PTTSW
J6002
DE 18 17 GND
UP GND
DOWN NAV
LOK SQL
TRC BEEP
SHIFT DETO
PTT AFON
LOW WX
TMUT ANL
2 1
to MAIN
unit J5002
J6001
GND 18 17 CLONE
GND GND
GND GND
GND VCC
+5 GND
GND GND
GND CLK
GND DATA
INTMIC ENB
2 1
to MAIN
unit J5001
5V
Explanatory notes
VOLTAGE LINE
TX LINE
10 - 4
S9002
(LIGHT)
LOGIC UNIT