Philips 32PFL3605/77 Service Manual page 20

EN 20 5. RAM1.0L LA
5.5.3 Power failure
For trouble shooting, following reference voltages are given:
• After power-up
• After power-down (switched to standby).
Table 5-2 Reference voltages
Location
(testpoint,
Signal name
item + pin
no.)
5VIN FB1
5VSB R29
3V3SB FB18
1V0SB C6
5VSW Q28 pin 7,8
VGA_5V U6 pin 8
REG3V3 U38 pin 4
3V3SW Q28 pin 5, 6
1V2SB U3 pin 3
VDD33 FB8
3V3DRV FB15
1V8SW U1 pin 4
B3V3SW FB20
12VIN FB2
12VSW R34
PANEL_VDD Q22 pin 5 to 8 12 V
TUNER_VCC U9 pin 3
12VAMP C454
REG5V U39 pin 3
H_VDD C363
3V3TC C419
VGL R587
VGH C392
16VTC C359
2010-Jul-02
Service Modes, Error Codes, and Fault Finding
Voltage (± 5%)
after power-
after power-
down
up
(standby)
5 V 5 V
5 V 5 V
3.3 V 3.3 V
1.1 V 1.1 V
5 V 0 V
4.8 V 4.8 V
3.3 V 3.3 V
3.3 V 0 V
1.2 V 1.2 V
3.3 V 3.3 V
3.3 V 0 V
1.8 V 0 V
3.3 V 0 V
12 V 0 V
12 V 0 V
0 V
5 V 0 V
12 V 0 V
5 V 0 V
8 V 0 V
3.3 V 0 V
-5 V 0 V
28.5 V 0 V
16.5 V 0 V