Panasonic LCD-2016

Troubleshooting for LED Blinking ( Quick 3 time blink )
LED blinks Detail error Board may defect
Quick 3 Power on problem P/A
(No F15V/SUB3.3V/SUB1.5V voltage)
F15V(16V) is supplied from P board. If the F15V /SUB voltage is not supplied
LED blinks 3 times (quick blink).
Ex. 43/49DS630** series
Power on.
Check if voltage F15V at No
pin 1,3,5 of A02
connector before LED
blinks?
Yes
(15V)
A board
Remove P2 connector.
Check if short-circuit at
pin 1,3,5 of A02
connector?
Yes
(Shorted)
A board
P
16V
No
P board
SRV-16V 12V IC5500
IC4900
A02 AMP
1
3
5
C8716/5420
5V SUB5V
P2 IC8705/5400
A
IC8000
Q7403 3.3V
16V 1
2 IC8100
3 1.1V
1.5V
IC8101
SUB3.3V
SUB1.1V
SUB1.5V
44