Power Led Blinking Timing Chart - Panasonic TX-P55ST50E Service Manual

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.
* Use SC jig to isolate the board.
Blinking Times
1 Panel information SOS
PD Start SOS
2 P+15V SOS
3 IROM BOOT PROGRAM SOS
4 Power SOS
6 Driver SOS1
(SC Energy recovery circuit)
(A-SC FPC DET)
7 Driver SOS2
(SU/SD Connector DET)
(SU/SD Scan and Logic IC)
8 Driver SOS3
(SS FPC DET)
(SS Energy recovery circuit)
9 Discharge Control SOS
10 Sub 3.3V SOS
Tuner power SOS
BE SOS
12 Sound SOS
13 Emergency SOS
20 2nd BOOT PROGRAM SOS
(Watchdog timer over flow)
21 2nd BOOT PROGRAM SOS
(System error)
22 2nd BOOT PROGRAM SOS
(Main system bus freeze)
23 2nd BOOT PROGRAM SOS
(Accidental interrupt signal)
24 2nd BOOT PROGRAM SOS
(NAND Flash memory data transfer error finish)
25 2nd BOOT PROGRAM SOS
(Unsupported NAND Flash memory)
Contents
19
Check point
-
A-Board
P-Board
A-Board
P-Board
P-Board
SC-Board
A-SC FPC
SU-Board
SD-Board
*
SS-Board
SS2-Board
SS FPC
SS2 FPC
A-Board
A-Board
SC-Board
SS-Board
P-Board
A-Board
Speaker
Woofer
A-Board
A-Board
A-Board
A-Board
A-Board
A-Board
A-Board