Led Blinks 1 Time - Panasonic TH-37PX60U Technical Manual

LED blinks 1 time

<Trouble Mode and Defective Board>
Trouble Mode
Communication Error
<How to find the defective boards>
In this case, the defective board is D board only.
LED blinks 2 times
<Trouble Mode and Defective Board>
Trouble Mode
15V down SOS
<How to find the defective boards>
Turn the unit on.
Is there 15V output
at CN P25 pin 1 or 2 before
Shutdown ?
Yes
D Board
With the power SW OFF, disconnect
CN P5. To isolate the PA board
board.
Turn the unit on.
Does the power
LED blink 2 times? The
power LED may blink 12
times.
Yes
P Board
Defective Board
D Board
(TH-37PX60, TH-42PD60U, TH-42PX60U\600U)
Defective Board (Possibility)
P, D, PA, SC, SS Board (P > PA, D, SC, SS)
Power SW OFF.
No
Disconnect CN P25. Is pin 1
or 2 of the socket P25 shorted
to GND?
Yes
With the power SW OFF, disconnect CN P12, SS11, and SS23 (*1)to
isolate the SS board. Remove the jumper at CN SS34 and install it
across pin 8 and 10 of connector P12.
No
PA Board
Warning: Disconnect AC Power prior to
making any disconnection or
7
Warning: Disconnect AC Power prior to
making any disconnection or
(*1) = Th reference number of
the sustain data connector is
different in some of the models:
TH-42PX600U = SS23
No
With the power SW OFF, disconnect
CN SC23, SC20, and SC2. To isolate
the SC board.
Turn the unit on.
Does the power LED
blink 2 times?
Turn the unit on.
Does the power LED
blink 2 times?
Yes
D Board
8
connection.
connection.
No
SC Board
No
SS Board