Panasonic Viera TH-42PX75U, Техническое руководство

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LED blinks 6 times
<Trouble Mode and Defective Board>
Trouble Mode
SC Energy Recovery SOS
Defective Board (Possibility)
SC, SS, D, P Board (SC > SS, D, P )
<How to find the defective boards>
D Board
P Board
Connect CN P12, SS11, SS34, and SS23(*3). Remove the A
board block assembly to gain access to the D and C boards.
(Remove 4 screws and 7 connectors)
SC Board
Yes
No
No
(*1) VSUS about 180V (Accurate voltage is provided on the Panel
Label)
CAUTION: Before connecting P2 or P11, discharge is necessary to
prevent potential shock caused by VSUS.
(*2) Place a jumper across pin 8 and 10 of connector P12. The unit will
not enter the standby mode without the jumper.
Warning: Disconnect AC Power prior to
making any disconnection or
connection.
Disconnect
connectors SC2, and
SC20 from the SC
board. Turn the TV on.
Does the TV power up
and
stay on?
SS Board
Yes
Connect
SC2 and
SC20. Disconnect
CN P12(*2) from the P board
and SS11, SS34, and SS23 (*3) from
the SS board. Place the jumper from
SS34 between pins 8 and 10 of
P12. Turn the TV on. Does
The TV power up
and stay on?
No
13
(*3) = The reference
number of the sustain
data connector is different
in some of the models:
TH-42PX75U = SS23
TH-42PX77U = SS23
TH-50PX75U = SS33
TH-50PX77U = SS33
No
Does the P board
output 15V at pin 7 of
P7 and Vsus at pin 1
of P2 before the TV
shuts down?
Yes
Note: CN = Connector
Ground the base of Q302 (Fig. 1 next pg) on the D board and turn the power on
Does the TV stay on?
Reseat the ribbon cables between
the D and the C boards. Also reseat
the cables between the C boards.
(See figure 2 on the next page
Yes