Troubleshooting For Led Blinking ( Quick 3 Time Blink ) - Panasonic LCD-2016 Technical Manual

Troubleshooting for LED Blinking ( Quick 3 time blink )

LED blinks
Quick 3
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
pin 1,3,5 of A02
connector before LED
blinks?
A board
Detail error
Power on problem
(No F15V/SUB3.3V/SUB1.5V voltage)
No
Yes
(15V)
Remove P2 connector.
No
Check if short-circuit at
pin 1,3,5 of A02
connector?
Yes
(Shorted)
A board
P
Q7403
16V
16V
Board may defect
P board
SRV-16V
12V
IC4900
A02
AMP
1
3
5
C8716/5420
5V
P2
IC8705/5400
3.3V
1
2
IC8100
3
1.1V
1.5V
IC8101
P/A
A
IC5500
SUB5V
IC8000
SUB3.3V
SUB1.1V
SUB1.5V
44