Fujitsu Plasmavision PDS4229W-B Service Manual page 11

Check 1
(1) Pull out Power Cord Plug and disconnect connectors CN10, CN41, CN42, CN49 and
CN50 on Main Power PCB.
(2) Connect 1 to pin 2 and 3 to pin 4 on CN4 connector.
(3) Plug in Power Cord Plug and turn on power switch.
lamp change to
green?
No
(1) Pull out Power Cord Plug and disconnect connector CN351 and CN352 on Main Power PCB.
(2) Connect 1 to pin 13 on connector CN352.
(3) Disconnect connectors on Main Power PCB. (CN10, CN41, CN42, CN49, CN50)
(4) Plug in Power Cord Plug and turn on power switch.
Is voltage
at each connector on
Main Power PCB normal ?
See page 19.
Yes
(1) Pull out Power Cord Plug and connect connector CN351 and CN352 to Power Supply Unit.
(2) Remove Video PCB Assy.
(3) Plug in Power Cord Plug and turn on power switch.
(4) Check state of green lamp.
Is green lamp lit
continuously?
Yes
Start
Yes
Does
No
No
Power supply protector operated
Power lamp : Flashing continuously in red.
(at an interval of 1 sec)
PDP faulty.
Power Supply
circuit faulty.
Main/Digital
circuit faulty.
Video circuit
faulty.
– 14 –
∗ Replace PDP.
∗ Vs and -Vy must be adjusted.
∗ Replace Main
Power PCB.
∗ Vs and -Vy must be adjusted.
Replace Main
/Digital PCB Assy.
Replace Video
PCB Assy.