Voltage Diagram - Icom AT-141 Service Manual

SECTION 10

VOLTAGE DIAGRAM

RF
R54 L28
CHASSIS
680 100µ
GND 3Vp-p
W502 5V
GND
RL1 D85
AJQ1341 1SS301
R53
2.5V
39k
D16
Q2
1SS301
2SC2668
0.2V
C50
2.0V
0.1
0.9V
Q1
2SK241
5V 5V 5V
CAPACITIVE: 0V
INDUCTIVE : 5.0V
8
6
7 -
-
5
+ +
4
Z>50 5.0
IC19b
Z<50 0
TA75393FS
R19 220
D22 MA2S111
R20 220
5V 5V
R21 220
R253 56k R157 30k
IC7
IC16 TC7W74FU S-80841CLUA
1 8 2 1
CK VCC I O
2 7 G
PR
D
3 6
Q CLR 3
4 5
GND Q
D12
R27
IC6 TC4013BP MA732
2.2k
1 3 8
2
2 7
1
3 6
4 5
R68 47k
C181
0.0047
5V
L18 100µ
IC5 TC74HC393AP
1 14
1CK VDD R67
2 13
1CR 47k
2CK
3 12
1QA 2CR
4 11
1QC 2QA
5 10
1QB 2QB
6 9
1QD 2QC
7 8
VSS 2QD
VCC
AVR
R72
1
1k VCC
2
AVR
R242 0 3
INT13/PE3
R243 0 4
INT12/PE2
R244 0 5
PNT11/PE1
6
INT10/PE0
5Vp-p
7
PB3
TUNE
8
PB2
9
PB1
R73 1k 10
PB0
11
TIO/P71
12
TOO/P70
X1 13
MOO
CR567
14
X0
15
X1
16
VS5
5V
C279 0.1
IC20 TA7805S
13.6
C280 0.1
IN +5V
E L34
HF70ACC635050
R55 22
R255 22
13.6V
CP505
ANTC L22 HF70ACC635050
13.6 13.6 13.6 13.6 13.6 13.6
CHASSIS
STAR 5V 5V
W501 L24 100µ
KEY
L25 100µ R56
7.8V 7.3V
22k
D80
Q8
MA700
CP25
2SC2458
E
CP502
R156
47k
NOTE:WAVEFORM WITH MARK IS MEASURED AT TX WITH THE CONDITION
THAT SHORT J13 AND ONLY RL1 IS ON.Tx with 2MHz/10W.
NOTE:UNLESS OTHERWISE SPECIFIED:RX
J13
L1
C7
LR-22A 10p
C8
2Vp-p 180p
D8 R151
MA732 2.2k
RL2
AJQ1341
L2 L3
RL2
LR116 LR-116
AJQ1341
D2 MA862
D12
1SS301
ATT
C48
D81 0.0047
HSB88WS
5V
R191
D9
2.2k R149 470
1SS301 5V
DS24
EL204HD
8
2
1 -
-
3
+ + R33
R34 220k
IC19a
220k
TA75393FS
R30
47
L5 R39 R41 R41
L4
2.2m 10k 10k 10k
LR-19 LR-19
R44
R31 11.5V
220
47k
Q4
5.5V
D14 R36 2SC2458
MA732 2.2k
13.6
4.9V
Q5
2Vp-p
2SC2458
4.2V
R32 47
C17 0.1 R42
1k
5V
0V
Q3
RN1204
COUT
R251 47k
CP5 Q11
CP1
Q12
CP2 Q13
CP3
Q14
48
P64/EC1
47
P63/T011
46
P62/T010
45
P61/PPG11
44
P60/PPG10
43
P53/TRG1
42
IC15
P52/PPG1
M890F108HSPFM 41
P51/SDA0
40
P50/SLC0
39
P24/EC0
38
P23/T001
37
P22/T000
36 Q21
P21/PPG01
35 Q22
P20/PPG00
Q23
34
P14/PPG0
33 Q24
P13/TRG0/AGTG
R236
10k
R237
10k
IC17 S-24CS08AFT
1 8
60mS A0 VCC
2 7
A1 WP
3 6
5V A2 SCL
4 5
0V VSS SDA
RESET
R76 100k
PULSE
Q31
Q32
13.6
Q33
5V
Q34
5V
Q11
R201 C84 R77
2SC2458
1k 0.22 220k
R204 Q7
47k
R57
100k
B - 10 - 1
CP15
NORMAL: 13.6
WHILE TUNING: 0.7
C98 C100 C102 C104 C106 C108
0.0047 0.0047 0.0047 0.0047 0.0047 0.0047
D54 D55 D56 D57 D58 D59
1SS301 1SS301 1SS301 1SS301 1SS301 1SS301
RL5 RL6 RL9 RL10 RL11
AP03311 AP03311 AP03311 AP03311 AP03311 AP03311 AP03311
L6 L7 L8 L9 L10 L11 L12
LA-459 LA-460 LA-461 LA-462 LA-463 LA-464 LA-465
RL3 RL16 RL17 RL18 RL19 RL20
AP03311 AP03311 AP03311 AP03311 AP03311 AP03311
D52 D65 D66 D67 D68 D69
1SS301 1SS301 1SS301 1SS301 1SS301 1SS301
C34 C120 C122 C124 C126 C128
0.0047 0.0047 0.0047 0.0047 0.0047 0.0047
C_OUT
1.4µS
RL3,RL5 ∼RL24 IS ON: 15mS
RL4,RL25∼RL27 IS ON: 40mS
IC4 BU4094BCFV
IC4 BU4094BCFV
1 16
STR V+
2 15
D OE
3 14 Q15
CLK Q5
4 13 Q16 Q37
R84 470
Q1 Q6
5 12 Q17 Q36 R85 470
Q2 Q7
6 11 Q18
Q35 R86 470
Q3 Q8
7 10 Q34 R87 470
Q4 Q'S5
8 9 Q33 R88 470
Q32 R89 470
Q31 R90 470
IC3 BU4094BCFV
1 16
STR V+
2 15
D OE
Q28 R92 470
3 3 14 Q25
CLK Q5
Q27 R93 470
4 13 Q26
Q1 Q6
Q26 R94 470
5 12 Q27
Q2 Q7 Q25 R95 470
6 11 Q28
Q3 Q8
Q24 R96 470
7 10
Q4 Q'S5
Q23 R97 470
8 9
GND QS Q22 R98 470
Q21 R99 470
Q18 R101 470
IC4 BU4094BCFV
Q17 R102 470
1 16
STR V+ Q16 R103 470
2 15
D OE Q15 R104 470
3 14 Q35
CLK Q5 Q14 R105 470
4 13 Q36
Q1 Q6 Q13 R106 470
5 12
Q37
Q2 Q7 Q12 R107 470
6 11 Q38
Q3 Q8 Q11 R108 470
7 10
Q4 Q'S5
8 9
GND QS
ATT
R160
470
L31
10µ
C152
C110 C112 C114 C118 C116 C147
0.0047 0.0047 0.0047 0.0047 0.0047 0.0047 0.0047
D75
D60 D61 D62 D64 D63 D74
1SS301
1SS301 1SS301 1SS301 1SS301 1SS301 1SS301
RL12 RL13 RL15 RL14 RL25
AP03311 AP03311 AP03311 AP03311 AR39251
L13 L14 L15 L16
LA-466 LA-467 LA-468 LA-469
RL4
AR39251
R208
100k
D53
1SS301
R205 R206
100k 100k
C150
0.0047
RL21 RL22 RL23 RL24
AP03311 AP03311 AP03311 AP03311
D70 D71 D72 D73
R207 R209
1SS301 1SS301 1SS301 1SS301
100k 100k
C130 C132 C134 C136
0.0047 0.0047 0.0047 0.0047
Explanatory notes
EACH RELAY ON: 0.7
OFF: 13.6
VOLTAGE LINE
COMMON LINE
IC11
µPA2004GR
C9
L7 1 16 LO7
C8
I1 O1
L6 2 15 LO6
C7 I2 O2
L5 3 14 LO5
C6
I3 O3
L4 4 13 LO4
C5
I4 O4
L3 5 12 LO3
C4 I5 O5
L2 6 11 LO2
C3
I6 O6
L1 7 10 LO1
I7 O7
8 9
VSS SK
IC12
µPA2004GR
C2
C1 ATT 1 16 ATT_O
I1 O1
COUT CRED 2 15 C_RED
I2 O2
L12 3 14 LO12
CRED
I3 O3
L12 L11 4 13 LO11
I4 O4
L11 L10 5 12 LO10
I5 O5
L10 L9 6 11 LO9
I6 O6
L9 L8 7 10 LO8
I7 O7
8 9
VSS SK
L8
L7
L6
L5
IC13
L4 µPA2004GR
L3
1 16 CO5
C5
I1 O1
L2
C4 2 15 CO4
I2 O2
L1
C3 3 14 CO3
I3 O3
C2 4 13 CO2
I4 O4
C1 5 12 CO1
I5 O5
6 11 C_IN
I6 O6
COUT 7 10 C_OUT
I7 O7
8 9
VSS SK
13.6
RL26
AR39251
L17
LA-470
ANT
L35
LR-17
RL27
AR39251
R258 100
R262 100
R263 100
C265
0.0047
D76
1SS301
C155
0.0047
13.6
J4
DS1−DS12 DS13–DS23
SL-311UT×12 SL-811UT×11
R167 R179
DS1 DS13
1.2k 1.2k
LO1 CRED
R168 R180
DS2 DS14
1.2k 1.2k
LO2 COUT
R169 R189
DS3 DS23
1.2k 1.2k
LO3 CO9
R170 R188
DS4 DS22
1.2k 1.2k
LO4 CO8
R171 R187
DS5 DS21
1.2k 1.2k
LO5 CO7
R172 R186
DS6 DS20
1.2k 1.2k
LO6 CO6
R173 R185
DS7 DS19
1.2k 1.2k
LO7 CO5
R174 R184
DS8 DS18
1.2K 1.2k
LO8 CO4
R175 R183
DS9 DS17
1.2k 1.2k
LO9 CO3
R176 R182
DS10 DS16
1.2k 1.2k
LO10 CO2
R177 R181
DS11 DS15
1.2k 1.2k
LO11 CO1
R178
DS12
1.2k
LO12
IC14
µPA2004GR
1 16 CO9
C9
I1 O1
C8 2 15 CO8
I2 O2
C7 3 14 CO7
I3 O3
C6 4 13 CO6
I4 O4
5 12
I5 O5
6 11
I6 O6
7 10
I7 O7
8 9
VSS SK