Philips FWD573/55 Service Manual page 29

PCB LAYOUT: CONTROL SW PCB
C851 A2 CN803A A3 CN806A B2 CN808A B2
C852 A2 CN804A B1 CN807A B2 CN810A A3
1
A
B
1
5-8
J801 B3 J803 B3 J805 B2 SW801
J802 B3 J804 B2 J806 B2 SW802
2 3
2 3
Voltage
IC251
B3 Pin NO 1 2 3 4
A1 Voltage 0.00 4.84 0.00 4.85 4.64
Pin NO 21 22 23 24 25
Voltage -15.9 -20 -13.3 -15 -27.9
Pin NO 41 42 43 44 45
Voltage -25 -25 0.00 -25.9 4.80
A
IC252
Pin NO 1 2 3 4
Voltage 0.00 4.97 0.00 0.00 4.93
Pin NO 21 22 23 24 25
B
Voltage 4.96 4.96 5.00 5.00 4.97
Q251
Pin NO 1 2 3
Voltage 0.00 0.01 0.67
Q252
Pin NO 1 2 3
Voltage 0.00 5.00 0.00
Q253
Pin NO 1 2 3
Voltage -22.1 -7.1 -22.2
Q254
Pin NO 1 2 3
Voltage -22.2 -7.1 -22.2
Q255
Pin NO 1 2 3
Voltage 3.38 4.58 5.00
5-8
5 6 7 8 9 10 11 12
4.60 0.00 4.91 4.70 0.00 0.00 0.00 0.00
26 27 28 29 30 31 32
-27.9 -15.2 -20.3 -25.5 -22.8 -25.9 -25.9 4.80
46 47 48 49 50 51 52
0.00 4.80 0.00 4.80 0.00 0.00 1.70
5 6 7 8 9 10 11 12
4.35 4.80 4.90 4.90 4.96 0.00 2.80 0.00
26 27 28
2.39 2.38 4.96
Q256
Pin NO 1 2 3
Voltage 3.89 4.97 5.00
Q257
Pin NO 1 2 3
Voltage 3.68 4.80 5.00
Q259
Pin NO 1 2 3
Voltage 4.34 5.00 5.00
Q261
Pin NO 1 2 3
Voltage 0.00 0.6 0.00
Q262
Pin NO 1 2 3
Voltage 0.00 5 0.71
13 14 15 16 17
4.85 -7.5 -25.4 -25.3
33 34 35 36 37
-28.5 -25.7 -25.7 -25.8
13 14 15 16 17
4.83 0.00 0.00 0.00
Q264
Pin NO 1 2 3
Voltage 0.00 4.13 0.00
Q265
Pin NO 1 2 3
Voltage 0.00 4.03 -0.03
Q266
Pin NO 1 2 3
Voltage 0.00 4.30 0.00