Panasonic TH-42PZ80U - Service tool mode; How to access; Display of SOS History

LED blinks 2 times
Trouble Mode
15V down SOS
Defective Board (Possibility)
P, A, D, SC, SS, PB Board (P > A, SC, SS, PB)
10
No
Yes
Reconnect P25 and measure the
resistance between pin 1 of
connector P7 and ground (Chassis)
Is there a
short
circuit?
Unplug the TV and check the resistance between
pin 1 of connector P7 and ground (Chassis)
Is there a
short
circuit?
YesNo
Plug in the TV and turn it on. Measure
the voltage at pin 1 of connector P7
Is there
15V
present?
No
Yes
Replace
The P board
Replace
The D board
Unplug connectors P6, P7, P12, and P25 on the P
board. Measure the resistance between pin 1 of
connector P7 and ground (Chassis)
Is there a
short
circuit?
No
Yes
Replace
The P board
Reconnect P12 and measure the
resistance between pin 1 of
connector P7 and ground (Chassis)
Is there a
short
circuit?
No
Yes
Replace
The SS board
Disconnect SC20 on the SC board
and measure the resistance between
pin 1 of connector P7 and ground
(Chassis
Go to the
Next slide (B)
Go to the
Next slide (A)
Warning: Disconnect AC Power prior to
making any disconnection or connection