Panasonic TH-103PF9UK - Page 30

Panel SOS – Power LED Blinks 5 Times (2/6)
Trouble Mode
5.0V line SOS
Defective Board
P(Multi/SC),P(Multi/SS),D, DN,C1-CZ,
SC, SS, DR1/2 Board, Panel(IC)
Power Supply / Protect Circuit
How to find the defective board
No
5 times
blink
7 times
blink
7 times
Diag.
Is there 5V
output at pin 7 of CN PC203
before shutdown ?
Is there 5V
output at pin 7 of CN PC202
before shutdown?
Yes
P(SS) Board
No
Is pin 30 of CN DN2
shorted to GND
Yes
DN Board
No
Yes
D Board
Yes
P(SC)
Board
No
No
D (or PC)
Board
Does the unit
power up?
Yes
SS Board
No
SC Board
Perform C, DR, Panel
Diagnostic as shown on page 3/6.
Power SW
OFF
■D,P,DN,SC,SS Diag.
Is there 5V
output at pin 7 of CN PC202
before shutdown?
30
Disconnect CN D20 and C88.
Turn on the power SW.
Connect CN D20. Turn on
the power SW.
Does the unit
power up?
Disconnect CN D20, D31~D36.
Disconnect PC204 and PC205.
Turn on the power SW.
Does the unit
power up?
Turn on the power SW. Turn on the power SW.
Disconnect AC from the unit.
Disconnect CN D3 or CN DN2.
Turn on the power SW.
Yes
(SC, SS NG)
No
(D or P or C, or Panel NG)
Yes
(C, or DR, or Panel NG)