Panasonic TH-103PF9UK Technical Manual page 40

Panel SOS – Power LED Blinks 7 Times (4/5)
Trouble Mode
DATA Driver SOS
P(SUS/SS),P(Multi/SS), C1-CZ Board
■C1～C3 Panel Diag.
Disconnect CN C34 and C32.
Are pins 1~4 and 6~11 of CN C34
shorted to GND?
No
Disconnect CN C11 or C21.
Are pins 1~4 and 6~11 of
CN C24 shorted to GND?
No
■C4～C6 Panel Diag.
Disconnect CN C44 and C42.
Are pins 1~4 and 6~11 of CN C44
shorted to GND?
Disconnect CN C51or C61.
Are pins 1~4 and 6~11 of CN C54
shorted to GND?
No
Disconnect CN CA15~CA16.
Are pins 1~4
and 6~11 of CN C64 shorted to GND?
Defective Board
DR1/2,D, P(SUS/SC),P(Multi/SC),
Yes
Yes
Yes
No
Yes
Yes
No
Panel
How to find the defective board
Disconnect CN CA3~CA5.
Are pins 1~4
and 6~11 of CN C24 shorted
to GND?
No
Panel
Disconnect CN CA9~CA11.
and 6~11 of CN C44 shorted
Disconnect CN CA12~CA14.
and 6~11 of CN C54 shorted
C6 Board
40
Disconnect CN CA6~CA8.
Are pins 1~4
and 6~11 of CN C34 shorted
to GND?
No
C2 Board
Disconnect CN CA1~CA2.
Are pins 1~4
and 6~11 of CN C14 shorted
to GND?
Yes
Are pins 1~4
to GND?
No
Panel
Are pins 1~4
Yes
to GND?
No
Panel
Yes
C3 Board
Panel
Yes
C1 Board
No
Panel
C4 Board
C5 Board