Pa Unit - Icom IC-703 Service Manual

11-3 PA UNIT

PA UNIT(1)
8V
3V
T8
RX: 7.9V
R104 C151
2.7k 0.1
L100
J100
0.15
PAI
to MAIN Q101
unit J2 2SK3074
C101 C103
TX: 2.7V
0.1
10p
TX: 3.5V RX: 0V
RX: 0V
PHV
R100
12k
L83
EXC-ELDR25C
[EUR/-1],[FRA/-1]
J300
[ESP/-1],[ITR-1]
RX
to MAIN
unit J1
RX: 13.8V
W80
F81 F82
PHV
F80
to
DC
POWER
J1
R1 10 L1 10
HV
NC
RX: 13.7V
8V
T8V T8
NC
L2 10
GND
NC
L3 EXC-ELDR25C
14V 14V
14V
to MAIN
14V
unit J6701
NC
GND
GND
POWS
3V L5 3V
TPWR 0.47
KEY
START
J900
R4 1k
220
EKY L900
EST L901 220 R5 1k
TUNER E14V L902 2943-666663
EGND L903 2943-666663
PHV
R207 3.3k R213 3.3k
R208 3.3k R214 3.3k
L204
J41
EXC-ELDR25C
[EUR/-1],[FRA/-1]
GND
[ESP/-1],[ITR-1]
IDH
IDL
TOE R41 1k
TDTS R42 1k
PWRS R43 10
MDT3 R44 1k
MCK3 R45 1k
DRES
to MAIN
GND
unit J6751
FORL
REFL
TPZL
TPHK
TPZS
TSWL
TGK
GND
R201 R210
1 220
RX: 13.7V
R202
R153 560
1
Q200
TX: 0.45V RD07MVS1
RX: 0V
Q150
TX: 2.1V
RD01MUS1
RX: 0V
L153
TX: 2.7V
LR-274
RX: 0V
Q201
RD07MVS1
R203
1
TX: 2.1V
RX: 0V
L151
HF50ACC322513-B
R204 R211
1 220
T8
TX: 7.8V
RX: 0V
Q81
R300 3.9k R304 47k
ECH8301
1 8
S D
2 7
S D
3 6 R305
S D
10k
4 5
G D
R80 R306
R301 Q300
100k 10
1k 2SC4213
Q80
2SK3018
Q400
UM5K1N
F1S 1
R402
R400
RX: 7.9V RX: 13.7V
47k
1k
IC1 2
R403
BA08FP
R401 47k
1k
8V F1R 3
O I
G
Q420
UM5K1N
F2S 1
R422
R420
47k
1k
2
R423
Q900
47k
ECH8301 R421
1k
F2R 3
1 8
S D
2 7
Q440
S D
UM5K1N
3 6
S D
4 5 F3S 1
G D
R442
R900 R440
47k
100k 1k
2
R902 R443
1k 47k
Q902 R441
1k
2SK3018 F3R 3
Q460
UM5K1N
F4S 1
R462
R460
47k
1k
2
R463
R461 47k
1k
F4R 3
Q480
UM5K1N
F5S 1
R482
R480
47k
R3
1k
1k
2
R483
47k
R481
1k
F5R 3
Q500
UM5K1N
F6S 1
R502
R500
47k
1k
TOE 2
TDTS R503
47k
R501
1k
MDT3 F6R 3
MCK3
CP40 CP41 Q520 UM5K1N
EP40 FORL F7S 1
R522
EP41 REFL
R520
47k
EP43 TPZL
1k
R47 1k TPHK 2
R48 1k TPZS R523
47k
EP42 TSWL R521
1k
R51 1k F7R 3
[EUR],[USA],[KOR]only
8V
3V
T8
PWRS
RX: 13.5V
TX: 0V
RX: 7.9V
L200
LR-430
L203
LA-246
Q250
2SK3018
C250 0.1
L300 L301
LA-236 LA-247
RX
L250
D250 1SS355
10
C303 0.1
C305 C307
RL250
68p 22p
ATN207
- +
10mS or more 10mS or more
TX: 0V
RX: 13.7V
3.1V
8.0V
Q401
UM5K1N
5 _F1S F1S 1 5 F1S_
C400 R406 C410
R404
0.0047
47k 0.0047
1k
2
R407
C401 C411
47k
R405
0.0047 0.0047
1k
4 _F1R F1R 3 4 F1R_
Q421
UM5K1N
5 _F2S F2S 1 5 F2S_
C420 R426 C427
R424
0.0047 47k 0.0047
1k
2
R427
C421 C428
47k
R425
0.0047 0.0047
1k
4 _F2R F2R 3 4 F2R_
Q441
UM5K1N
5 _F3S F3S 1 5 F3S_
C440 R446 C447
R444
0.0047 47k 0.0047
1k
2
R447
C441 C448
47k
0.0047 R445 0.0047
1k
4 _F3R F3R 3 4 F3R_
Q461
UM5K1N
5 _F4S F4S 1 5 F4S_
C460 R466 C467
R464
0.0047 47k 0.0047
1k
2
R467
C461 C468
R465 47k
0.0047 0.0047
1k
4 _F4R F4R 3 4 F4R_
Q481
UM5K1N
5 _F5S F5S 1 5 F5S_
C480 R486 C488
R484
0.0047 47k 0.0047
1k
2
R487
C481 C489
47k
R485
0.0047 0.0047
1k
4 _F5R F5R 3 4 F5R_
Q501
UM5K1N
5 _F6S F6S 1 5 F6S_
C500 R506 C508
R504
0.0047 47k 0.0047
1k
2
R507
C501 C509
47k
R505
0.0047 0.0047
1k
4 _F6R F6R 3 4 F6R_
Q521 UM5K1N
5 _F7S F7S 1 5 F7S_
C520 R526 C529
R524
0.0047 47k 0.0047
1k
2
R527
C521 C530
47k
R525
0.0047 0.0047
1k
4 _F7R F7R 3 4 F7R_
[EUR],[USA],[KOR]only
8V
3V
L402
1
R448
39 7M(3)
RL440 ATX222
+ + L440 L441 L442
LR-421 LR-422 LR-422
C445 100p
C443
_F3S
- - 180p C453 47p
_F3R
[EUR],[USA]
W440
[KOR]only
R528
39 50M(7)
RL520 ATX222
+ +
L520 L521 L522
LA-247 LA-248 LA-248
C525 9p
_F7S
- - C527 3p
_F7R
W502
R508
39 24, 28M(6)
RL500 ATX222
+ +
L500 L501
LR-426 LR-426
_F6S
- - C506 18p
C503 27p
_F6R
W500
R468 39
10,14M(4)
RL460 ATX222
+ +
L460 L461
LR-424 LR-423
C463 33p
C458 47p
_F4S
- -
_F4R
C465 47p
W460
R488 39
18, 21M(5)
RL480 ATX222
+ +
L480 L481
LR-427 LR-425
C483 39p
_F5S
- - C485 22p
_F5R
W480
R428 39
3.5M(2)
RL420 ATX222
+ +
L420 L421
LR-419 LR-420
C423 180p
_F2S
- - C425 82p
_F2R
W420
R408 39
1.9M(1)
RL400 ATX222
+ + L400 L401
LR-417 LR-418
C403 470p
_F1S
- - C407 180p
_F1R
W402 W400
11 - 8
L80 EXC-ELDR25C
IT8V
L81 EXC-ELDR25C
IT3V
L82 EXC-ELDR25C
IT8V RL
R449 39
RL441 ATX222
+ +
F3R_
- -
F3S_
W441
R529
39
RL521 ATX222
+ +
F7R_
- -
F7S_
W521
R509 39
RL501 ATX222
+ +
F6R_
- -
F6S_
W501
R469 39
RL461 ATX222
+ +
PA
UNIT(2)
F4R_
- -
F4S_
W461
R489 39
RL481 ATX222
+ +
F5R_
- -
F5S_
W481
R429 39
RL421 ATX222
+ +
F2R_
- -
F2S_
W421
R409 39
RL401 ATX222
+ +
F1R_
- -
F1S_
W401
BUS LINE1