Panasonic TH-103PF9UK Technical Manual page 39

Panel SOS – Power LED Blinks 7 Times (3/5)
Trouble Mode
DATA Driver SOS
P(SUS/SS),P(Multi/SS), C1-CZ Board
■DR1/2 P(SC/SS),D Diag.
Disconnect CN DR12 of the DR2
Board (SS side). Turn the unit on.
Yes
Does it power up?
No
Disconnect CN DR2 of the DR1
Board (SS side). Turn the unit on.
Yes
Does it power up?
No
Disconnect CN DR2 of the DR1
Board (SC side). Turn the unit on.
Does it power up?
No
Disconnect CN DR12 of the DR2
Board (SC side). Turn the unit on.
Does it Power up?
No
D Board (*)
Defective Board
DR1/2,D, P(SUS/SC),P(Multi/SC),
Connect CN DR12. Disconnect
CN DR13~DR15 of the DR2 Board.
Turn the unit on.
Does it power up?
No
Disconnect CN SS35 and SS42.
Turn the unit on.
Are there Vda
output at pin 1 of CN P12 and
15V output at pin 4 of CN P12
before shutdown ?
No
Connect CN DR2. Disconnect CN DR3~DR5
Yes
of the DR1 Board. Turn the unit on.
Yes
How to find the defective board
Yes
(C4~C6,Panel)
DR2 Board
Connect CN DR2. Disconnect
CN DR3~DR5 of the DR1 Board.
Turn the unit on.
Yes
Does it power up?
P(SS) Board
Does it power up?
DR1 Board
No
Connect CN DR2. Disconnect CN DR13~DR15
of the DR2 Board. Turn the unit on.
Does it power up?
No
DR2 Board
39
Power SW
OFF
Yes
(C7~C9,Panel)
Power SW
OFF
No
DR1 Board
Yes
(C1~C3,Panel)
Power SW
OFF
Yes
(CX~CZ, Panel)
Power SW
OFF
C4 ～ C6,
Panel Diag.
C7 ～ C9,
Panel Diag.
C1 ～ C3,
Panel Diag.
CX ～ CZ,
Panel Diag.