Panasonic TX-P50UT30, Service Manual

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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.
7.3. No Power
First check point
There are following 3 states of No Power indication by power LED.
1. No lit.
2. Green is lit then turns red blinking a few seconds later. (See 7.2.)
3. Only red is lit.
Blinking Times Contents Check point
1 Panel information SOS
PD5 Start SOS -
3 P+ 3.3V SOS A-Board
4 Power SOS P-Board
5 P+ 5V SOS A-Board
6 Driver SOS1
(SC Energy recovery circuit)
(A-SC FPC DET) SC-Board
A-SC FPC
7 Driver SOS2
(SU/SD Connector DET)
(SU/SD Scan and Logic IC) SU-Board
SD-Board
*
8 Driver SOS3
(SS FPC DET)
(SS Energy recovery circuit) SS-Board
SS FPC
9 Discharge Control SOS A-Board
10 Sub 5V SOS
Sub 3.3V SOS
Tuner power SOS A-Board
SC-Board
SS-Board
P-Board
12 Sound SOS A-Board
Speaker
13 Emergency SOS A-Board
14 IROM SOS (ROM in Peaks IC) A-Board
P-Board