Panasonic P50GT30, Service Manual

Page: 19 / 118

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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 2 states of No Power indication by power LED.
1. No lit
2. Red is lit then turns red blinking a few seconds later. (See 7.2.)
Blinking Times Contents Check point
1 Panel information SOS
LP1 Start SOS -
3 P+ 3.3V SOS A-Board
4 Power SOS P(MAIN)-Board
P(SUB)-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
SS2-Board
SS FPC
SS2 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(MAIN)-Board
P(SUB)-Board
11 FAN SOS A-Board
FAN
12 Sound SOS A-Board
Speaker
13 Emergency SOS A-Board
14 IR LED SOS A-Board