Power Board - Philips FWD792 Service Manual

8-1

POWER BOARD

TABLE OF CONTENTS
Voltage ............................................................................. 8-1
Circuit Diagram ................................................................ 8-2
PCB Layout (/98 ver & /55 ver) ....................................... 8-3
Electrical Parts List .......................................................... 8-4
VOLTAGE
IC901
Pin NO 1 2 3 4 5 6
Voltage 3.66 0.01 0.40 1.90 0.00 2.66
IC902
Pin NO 1 2 3 4
Voltage 5.00 -3 2.70 3.96
IC903
Pin NO 1 2 3
Voltage 3.90 0.00 2.40
IC904
Pin NO 1 2 3 4 5 6
Voltage 4.90 4.90 0.00 0.40 1.30 3.20
IC905
Pin NO 1 2 3 4 5 6
Voltage 0.00 4.90 0.70 0.00 1.20 4.90
IC906
Pin NO 1 2 3 4
Voltage 1.10 -3.38 -3 0.04
Q901 Q909
Pin NO 1 2 3 Pin NO
Voltage 0 278 0 Voltage
Q902 Q910
Pin NO 1 2 3 Pin NO
Voltage 248 296 243 Voltage
Q903 Q911
Pin NO 1 2 3 Pin NO
Voltage 0.8 0 0.8 Voltage
Q904 Q912
Pin NO 1 2 3 Pin NO
Voltage 0.8 0 0.7 Voltage
Q905 Q913
Pin NO 1 2 3 Pin NO
Voltage 0 5.1 0 Voltage
Q906 Q914
Pin NO 1 2 3 Pin NO
Voltage -11.9 -24.8 -12.4 Voltage
Q908 Q915
Pin NO 1 2 3 Pin NO
Voltage -27.6 -28.3 -28.3 Voltage
8-1
7 8
15.87 5.00
7 8 9 10 11 12 13
0.00 1.20 1.20 13.30 13.30 4.90 4.90 4.90
7 8
12.00 13.30
Q916
1 2 3 Pin NO 1
5 5.18 11.94 Voltage 0
Q917
1 2 3 Pin NO 1
0 -27.5 0.5 Voltage 0 251
Q918
1 2 3 Pin NO 1
13.02 0.65 13.03 Voltage 0
Q919
1 2 3 Pin NO 1
0.6 0 0 Voltage 3.6
Q920
1 2 3 Pin NO 1
0 0.02 0.65 Voltage 0.68
1 2 3
1 0.9 0.8
1 2 3
0.13 2.2 0
14 15 16
0.00 13.40
2 3
0 0.6
2 3
0
2 3
0 0.6
2 3
0 5
2 3
0 0