Power Led Error Code Definition - Panasonic TC-P50VT20 Technical Manual

Power LED Error Code Definition (1 of 2)
The following table identifies the areas where a problem is suspected according to the number of
times that the POWER LED blinks.
POWER LED
ERROR CIRCUIT MONITORED
CODE
Panel Information SOS
1 BLINLK
Panel Alarm SOS
2 BLINKS P15V form the P board
3 BLINKS P3.3V from the D board
Power Supply output
4 BLINKS
voltages
5 BLINKS P5V from the A board
6 BLINKS SC Energy Recovery Circuit
CONDITIONS TRIGGERING
THE SHUTDOWN
Communication problem between the System CPU
(IC1100) and the Panel CPU (IC9003)
Missing P15V

P15V is not been generated by the P board.
 P15V is been affected by one of the boards it is
connected to (A short circuit of the P15V).
Wrong diagnostic by the D board
Missing P3.3V
Reasons:

The A board is not generating the 3.3V

The 3.3V is been affected by one of the C boards
or the Panel (A short circuit of the P3.3V).
Wrong diagnostic by the D board
Regulation issues with any of the voltages output from the
power supply.
Wrong diagnostic by the D board
Missing P5V
Reasons:

The A board is not generating the 5V

The 5V is been affected by the SC, SS, A, or C2
board (A short circuit of the P5V).
Wrong diagnostic by the D board
An increase or reduction of the Energy Recovery Circuit
output (MID).
Open connection between connector D20 on the D board
and SC20 on the SC board.
Open connection between any of the ribbon cables on the
C boards and the D board.
Open connection between the ribbon cable/cables
interconnecting the C boards.
Wrong diagnostic by the D board.
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