Pa200W Board - Icom IC-7800 Service Manual

11-29 PA200W BOARD

PA200W BOARD
TX: 14.67V
R107
RX: 15.01V
1k
TX: 3.42V
RX: 0V
Q101
J1 RD01MUS1
R102 C102
PAI
from MAIN
unit J801
0.001
15
TX: 0.93V
RX: 0V
GND
EP502
GND
GND
GND
+48HV
+48V
+48V
1 NC
EP501
7 NC
2 H8V
+48HV
8 GND
3 H8V
to DC-DC 9 GND
unit W1 4 C15V
10 GND
5 C15V
11 GND
6 LG_PWR
12 GND
REG UNIT
C301
TX: 14.63V
C111 R202
RX: 15.06V
0.001 560
TX: 4.09V
C112
RX: 0V
L202
LR-475
0.1
Q201
PD55003
R201
1
TX: 0.77V
RX: 0V
+15V_
+15V_
Explanatory notes
VOLTAGE LINE
TX LINE
+15V_
48.1V
11 - 28
L307
C311 R312 R307
TX: 4.78V
RX: 0V
0.0068 100 100
C401
0.68
Q301
SD2918
0.1
TX: 48.0V
RX: 0V
L306
LR-474
C303
C402
0.1
0.68
L304
EXC-ELDR25C
R301
20k
L305
EXC-ELDR25C
+48HV
L303
R3
STS-40
0.0047
+48HV +48HV
2.87V
3V
+15V_
R6 1k
R7 1k
TX: 7.95V
RX: 0V
7.96V
Q1
2SB1119
C8
+48HV
0.0047
TX: 7.96V
RX: 7.22V R2
10k
TX: 7.66V
RX: 0V
Q2
DTC114EU
R425
2k
R407
10k
R423
1.5k
R416
15
C415
D403
1SS301
0.68
R418
18
R401 Q401
SD2931
12
48.0V
R402
12
TX: 2.59V
RX: 0V
R403
12
D401
1SS301
D402
1SS301
R404
TX: 2.58V
12
RX: 0V
R405
Q402
12 48.0V
SD2931
R406
12
R420
15
C416
D404
1SS301
0.68
R422
18
R410
10k
R424
1.5k
R426
2k CP4 W501
R5
EP503
2.2k
C16
C15
0.0047
+48HV
THL THL
+15V_
15.06V
IC2
TA78L08F
+15V_
O I
G
J401
PAO to FILTER
unit J901
C417
0.1
L404
LR-95 C418
L403
0.1
LR-296
C419
0.1
C420
0.1
R521 R522 R523
CP5
0.01 0.01 0.01
+48HV
+48HV
J2
L1 THML
L2 IDH
to MAIN
L3 IDL
unit J430
PAT8
L6
+15V_
L7 +15V
J5
+15V
+15V
to DC-DC
GND
unit J5
GND
MESUREMENT CONDITIONS
voltage at RX(no instruction)
frequency: 14.1 MHz
mode: J3E(USB)
ANT(RX): no input
(TX): no modulation
Digital tester
range: input impedance