Icom IC-A22 Service Manual

SECTION 10 VOLTAGE DIAGRAMS
10 - 1
10-1 MAIN UNIT
VOLTAGE LINE
Explanatory notes
TX LINE
RX LINE
J6001
to LOGIC unit
J6002
to LOGIC unit
VCC
R5
TA75S393F
IC5007
TRC
+5
UN9211(A3/E)
UNR9211J(A22/E)
Q5029
1k R5090
-
+
EXTSP
PTT UNIT
LOGIC UNIT
MAIN UNIT
to
MAIN UNIT
SPE
INTSP
IF
HV
VCC
+5V
220 C5020
VCC
BEEP
0.1
C5022
C
-
+
P5001
J4006
J4005
J5003
J5004
GND
R12K
GND
PTTSW
R10K
R30
GND
R12K GND PTTSW R10K R30
2SB1201
Q5006
2SC4211
Q5007
EXTMIC
UP
DE
DOWN
(DIAL)
S5001
XP4315
Q5013
TC75W51FU
IC5005a
TC75W51FU
IC5005b
4
8
-
+
3
1
2
7
5
6
150p(IC-A3/E)
180p(IC-A22/E)
0.0027(IC-A3/E)
0.0033(IC-A22/E)
C5050 0.01 C5049 C5048
39k
R5060
39k
R5059
39k
R5058
100k
R5055
500k R5098
100k R5053
100k R5054
100k
R5052
TBPS1S472K440HQ R5123
0.0047 C5076
15 C5043
39 R5049
150
R5117
10k R5047
0.001 C5088
47k
R5045
0.1
C5041
3.9k
R5044
0.047
C5040
2SB1132
Q5019
2SC4211
Q5020
UN9110(A3/E)
UNR9110J(A22/E)
Q5018
2SB1132
Q5016
2SC4211
Q5017
2SB1132
Q5014
2SC4211
Q5015
0.001 C5069
MA111
D5005
MA111
D5007
MA111
D5006
10k
R5063
22 C5059 10k R5066 22 C5058 10k R5065
0.001 C5068
22 C5057 10k R5064
22 C5056 10k R5062 22 C5055 0.01 C5054 0.001 C5053 33 C5052
470 R5061
S-812C50AMC-C3E
IC5006
G
OI
39k
R5078
39k
R5021
2SC4211
Q5005
2SD1819
Q5010
2SD1819
Q5031
AGC
RF-AGC
R5
R5
2
4
5
1
3
-
+ TC4S66F
IC5008
1
3
2
45
1k R5087
0.1
C5075
22k
R5085
180k R5125
180k R5126
10k R5086
1.5k
R5035
100p C5030
CDBM455C24
X5002
CR-485
X5001
0.1 C5003
100k R5116
2.2k R5001 15p C5001 15p C5002
0.01 C5064 0.1 C5065
470
R5036
0.01
C5033
100k
R5037
0.001 C5031 0.001 C5032 0.01 C5034
150k R5107
4.7k R5010
6.8k R5104 10 C5077
0.47 C5026 560k R5130
1 C5086
TBPS1R154K475H5Q R5120
470k R5121
240k R5106 56k R5129
0.1 C5083 0.1 C5084
150k
R5105
22k
R5113
47k
R5114
100k
R5043
56k
R5030
100k
R5029
1M
R5127
10
C5025
330k
R5017
0.22
C5024
UN9210(A3/E)
UNR9210J(A22/E)
Q5009
UN9210(A3/E)
UNR9210J(A22/E)
Q5008
2SC4215
Q5002
2SC4215
Q5003
2SC4215
Q5030
2SC4211
Q5004
220k
R5015
0.01
C5004
1.5k
R5124
0.01
C5006
0.01
C5007
220k
R5101
0.01
C5081
1k(IC-A3/E)
170k(IC-A22/E)
R5088
0.01 C5067 0.01 C5066 0.01 C5011 15 C5082
1.5k R5018
100k R5008
470p(IC-A3/E) 0.1(IC-A22/E) C5078
2.2k R5071 0.001 C5005
3.3k R5009
150k R5112
100k R5011
2.2k R5070 470p C5079
470k R5100
3.3k R5012
0.01 C5008 0.1 C5080 100 R5102
3.3k R5103
56k R5031
270k R5013
4.7k R5014
100k R5016
100k R5018
0.01
C5060
100k
R5072
2SC4211
Q5026
4.7k R5077 68k R5128
4.7 C5090
56k R5074
47k R5075
10 C5062 2.2k R5076
0.001 C5012
0.0022 C5010
4.7k R5020
1 C5013
1k R5084
(VOL)
(SQL)
RV-298
R5082
18k
R5115
10k
R5083
SIDET
MA111
D5013
100 C5017
0.0022(IC-A3/E)
0.1(IC-A22/E)
0.47 C5014 470p C5015
82 R5023
3.3 C5016 0.047 C5018
10 R5024
C5010
630
R5025
470 R5026
2.2 C5021 470k R5118
18k
R5027
TA7368P
IC5003
MIXIN GND N-REC N-DET RSSI IFOUT QUAD
OSCIN
OSCOUT
MIXOUT
VCC
IFIN
DEC
FILOUT
CFWS455D
FI5001
543
21
TA31136F(D)
IC5001
FILINAFOUT
16
1 8 5 3 7
9
6 2
12 15 11
4
13 14 10
SQL
NAV
DETO
ANL
WX
(DC 12V)
J4002
PRT UNIT
PACK
BATTERY
to
UNIT
RF
MA133 D5015
MA111
D5003
TC4W53F
IC5002
8
5
7
1
6
4
3
2
(POWER)
SP3001
CHASSIS
J5005
5V
SHIFT
CLK
DATA
LOK
+5V
WX
VCC
TMUT
MOD
LOW
IF
R5
AGC
SPE
EXTSP
INTSP
SIDET
CLONE
RF-AGC
EXTMIC
EXTPTT
ENB
EXTPTT
EXTMIC
RF-AGC
CLONE
SIDET
INTSP
EXTSP
SPE
AGC
R5
IF
IF
GND
LOW
MOD
TMUT
VCC
VCC
GND
WX
+5V
LOK
DATA
ENB
CLK
SHIFT
GND
GND
GND
5V
1
C5051
0.001 C5074
15k
R5050
BA3308F
IC5004
100k(IC-A3/E) 10k(IC-A22/E) R5097
0.01 C5063 10 C5046
MA8036
D5011
0.001
C5089
1M
R5051
2.2
C5045
7
4
1
5
3
2
6
14
13
12
11
10
9
8
1 2 3 4 5 6 7 8 9
SPE
2SB1132
Q5028
10k R5093
100 C5085
0.001(IC-A3/E)
0.01(IC-A22/E)
1k R5088
2SA1622
Q5027
0.001
C5071
0.001
C5070
DN
E
UP
10k
R5089
33k
R5091
MA111
D5008
EXTPTT
22 C5072 C5073
PTT
AFDN
MA111 D5010
12
J6001
1718
DOWN
18 17
J6002
21
UP
DE
LOK
TRC
SHIFT
PTT
LOW
TMUT
NAV
GND
SQL
BEEP
GND
DETO
AFDN
WX
ANL
GND
GND
GND
GND
+5
GND
GND
GND
INTMIC
GND
CLONE
VCC
GND
GND
GND
CLK
DATA
ENB
17 18
J5001
12
ENB
DATA
CLK
GND
GND
GND
VCC
CLONE
GND
INTMIC
GND
GND
GND
+5
GND
GND
GND
GND
ANL
WX
AFDN
DETO
GND
BEEP
SQL
GND
NAV
TMUT
LOW
PTT
SHIFT
TRC
LOK
DE
UP
21
J5002
1817
DOWN
J9001
J6003
18
R5092
MA113
D5009
MA111
D5014
RX: 4.3V
EXP SP NOT CONNECTED:0V
EXP SP CONNECTED: 4.2V
TX
11.7V
RX: 9.6V
EXP SP NOT CONNECTED:0V
EXP SP CONNECTED: 9.2V
TX
RX: 5V
TX: 3.6V
RX: 0V
TX: 4.5V
RX: 5V
TX: 4.5V
RX: 5V
TX: 3.8V
RX: 11.2V
TX: 11V
RX: 0V
TX: 11.6V
RX: 11.7V
TX: 11.6V
RX: 2V
TX: 0V
RX: 3.4V
TX: 0V
RX: 2.7V
TX: 0V
RX: 0.8V
TX: 0V
RX: 1.1V
TX: 0V
ANL OFF: 0V
ANL ON: 5V
5V
4.5V
(NO MODULATION)
FREQUENCY: 127.025MHz(VOR: 113.000MHz)
VOLTMETER:50kΩ/V DC
VOLTAGE: 12.0V
MEASUREMENT CONDITION
RX: 0V
TX: 1.8V
RX: 0V
TX: 5V
RX: 0V
TX: 2.5V
5V
4.6V
11.7V
5V
RX: 5.1V
TX: 0V
RX: 0V
TX: 5V
RX: 1V
TX: 0V
RX: 0.1V
TX: 0V
RX: 3.3V
TX: 0V
RX: 0.15V
TX: 0V
RX: 3V
TX: 0V
VOR: 5V
RX: 0V
TX: 0V
RX: 5V
TX: 0V
RX: 0.65V
TX: 0V
RX: 0.4V
TX: 0V
RX: 0.07V
TX: 0V
RX: 2.8V
TX: 0V
RX: 0.75V
TX: 0V
RX: 1.15V
TX: 0V
RX: 4.6V
TX: 0V
RX: 0V
TX: 2.5V
RX: 1.15V
TX: 0V
RX: 1.0V
TX: 0V
RX: 3.4V
TX: 0V

Icom IC-A22 Specifications

General

Brand	Icom
Model	IC-A22
Category	Transceiver
Language	English