Specifications

Service Modes, Error Codes, and Fault Finding
EN 20 RAM1.0A LA5.
2010-Mar-12
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
Signal name
Location
(testpoint,
item + pin
no.)
Voltage (± 5%)
after power-
up
after power-
down
(standby)
5VIN FB1 5 V 5 V
5VSB R29 5 V 5 V
3V3SB FB18 3.3 V 3.3 V
1V0SB C6 1.1 V 1.1 V
5VSW Q28 pin 7,8 5 V 0 V
VGA_5V U6 pin 8 4.8 V 4.8 V
REG3V3 U38 pin 4 3.3 V 3.3 V
3V3SW Q28 pin 5, 6 3.3 V 0 V
1V2SB U3 pin 3 1.2 V 1.2 V
VDD33 FB8 3.3 V 3.3 V
3V3DRV FB15 3.3 V 0 V
1V8SW U1 pin 4 1.8 V 0 V
B3V3SW FB20 3.3 V 0 V
12VIN FB2 12 V 0 V
12VSW R34 12 V 0 V
PANEL_VDD Q22 pin 5 to 8 12 V 0 V
TUNER_VCC U9 pin 3 5 V 0 V
12VAMP C454 12 V 0 V
REG5V U39 pin 3 5 V 0 V
H_VDD C363 8 V 0 V
3V3TC C419 3.3 V 0 V
VGL R587 -5 V 0 V
VGH C392 28.5 V 0 V
16VTC C359 16.5 V 0 V