Philips FPF42C128135UA-52 Service Manual page 14

EN 14 5. FHP PDP
Problem Analysis Procedure: The entire screen does not light
The entire screen does not light
Remove CN06
(on LOGIC Board,
PSU-LOGIC cable)
All the boards are connected
Connect the set to mains.
Switch "ON" the set
via the mains switch
Vpr2 (3.3 V) on
the PSU board is present?
Turn "OFF" AC power
Connect CN 6 (LOGIC)
Turn on AC power
Vpr2 (3.3 V) on
the PSU board is present?
Disconnect the mains plug.
Remove the following power connections:
on X-SUS: CN23 (PSU -> X-SUS)
on X-SUS: CN26 (X-SUS -> ABUS-R)
on X-SUS: CN32 (X-SUS -> Y-SUS)
on ABUS-R: CN47 (ABUS-R -> ABUS-L)
Service Modes, Error Codes, and Fault Finding
1
N
Y
N
Y
2
Figure 5-5 Problem analysis procedure: the entire screen does not light
Caution 1: never disconnect connectors or
remove boards when the mains plug is connected.
Allow discharge of power supplies before
disconnecting connectors!
Caution 2: do not interchange boards between
different PDPs, this might damage your PDP
PSU board is
defective
LOGIC board is
defective
Replace Logic Board
"Logic Board Exchange" procedure
Replace the
Power Supply
Follow the
G_16400_026.eps
310706