- 20 -
Check 1
Start
(1) Pull out Power Cord Plug and disconnect connectors CN6, CN23, CN33, CN42 and CN52
on Main Power PCB.
(2) Connect pin 1 and pin 13 of CN352 through a 1/4W, 1K
Ω resistor.
Connect pin 1 of CN352 and pin 5 of CN509 through a 1/4W, 1K
Ω resistor.
Plug in Power Cord Plug and turn on power switch.
(3)
Power Supply
Power supply protector operated
Power lamp : Flashing 1 time in Red.
Flashing 1 time in Green.
∗
Replace Main
Power PCB.
∗ Vs and
Va
must be adjusted.
No
Is voltage
Does
lamp change to
green?
at each connector on
Main Power PCB normal?
See page 26
circuit faulty.
PDP faulty.
∗
Replace PDP.
∗ Vs and
Va
must be adjusted.
Yes
No
Is green
lamp lit
continuously?
Main/Digital
circuit faulty.
Replace Main
/Digital PCB Assy.
No
Video circuit
faulty.
Replace Video PCB
Assy.
Yes
Yes
CN502 shorted.
(1) Pull out Power Cord Plug and disconnect connectors CN351 and CN352 on Main Power
PCB.
(2) Connect pin 1 and pin 13 of CN352 through a 1/4W, 1K
Ω resistor.
Connect pin 1 of CN352 and pin 5 of CN509 through a 1/4W, 1K
Ω resistor.
Plug in Power Cord Plug and turn on power switch.
(4)
Disconnect connectors on Main Power PCB. (CN6, CN23, CN33, CN42, CN52)
(3)
CN502 shorted.
(1) Pull out Power Cord Plug and connect connector CN351 and CN352 to Power Supply Unit.
(2) Remove Video PCB Assy.
Plug in Power Cord Plug and turn on power switch.(3)
(4) Check state of green lamp.
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