Panasonic Viera TX-P42XT50B, Service Manual

Page: 19 / 95

19
7.2. Power LED Blinking timing chart
1. Subject
Information of LED Flashing timing chart.
2. Contents
When an abnormality has occurred the unit, the protection circuit operates and reset to the stand by mode. At this time, the
defective block can be identified by the number of blinks of the Power LED on the front panel of the unit.
Blinking Times Contents Check point
1 Panel information SOS
PD Start SOS -
2 P+15V SOS A-Board
PSS-Board
3 IROM BOOT PROGRAM SOS A-Board
PSS-Board
4 Power SOS PSS-Board
6 Driver SOS1
(SN/PSS Energy recovery circuit)
(A-SN FPC DET) SN-Board
PSS-Board
A-SN FPC
7 Driver SOS2
(SN Connector DET)
(SN Scan and Logic IC) SN-Board
8 Driver SOS3
(PSS FPC DET) PSS-Board
PSS FPC
9 Discharge Control SOS A-Board
10 Sub 3.3V SOS
Tuner power SOS
BE SOS A-Board
SN-Board
PSS-Board
12 Sound SOS A-Board
Speaker
13 Emergency SOS A-Board
20 2nd BOOT PROGRAM SOS
(Watchdog timer over flow) A-Board
21 2nd BOOT PROGRAM SOS
(System error) A-Board
22 2nd BOOT PROGRAM SOS
(Main system bus freeze) A-Board
23 2nd BOOT PROGRAM SOS
(Accidental interrupt signal) A-Board
24 2nd BOOT PROGRAM SOS
(NAND Flash memory data transfer error finish) A-Board
25 2nd BOOT PROGRAM SOS
(Unsupported NAND Flash memory) A-Board