Yes
– 14 –
Check 1
Start
(1) Turn main power off and disconnect connectors CN8, CN10, CN41, CN42, CN49 and
CN50 on power supply unit.
(2) Connect 1 to pin 2 and 3 to pin 4 on CN4 connector.
(3) Turn on main power and power switch.
PDP faulty.
Power supply protector operated
Power lamp : Flashing continuously in red.
(at an interval of 0.5 sec)
(1) Turn main power off and disconnect connector CN103 on Power Supply Unit.
(2) Connect 1 to pin 3 on connector CN103.
(3) Disconnect all connectors on power supply unit.
(4) Turn on main power and the power switch.
(1) Turn main power off and connect connector CN103 to DC/DC power PCB.
(2) Connect pin 5 of P503 to pin 2 of P502 on DC/DC power PCB.
(3) Disconnect all connectors on DC/DC power PCB except P501.
(4) Turn on main power and power switch.
∗
Replace PDP.
∗
Vs and -Vy must be adjusted.
Yes
No
Does
lamp change to
green?
Power Supply
circuit faulty.
∗
Replace Power
Supply Unit.
∗
Vs and -Vy must be adjusted.
No
Is voltage at
each connector on
Power Supply unit
normal ?
Yes
(1) Turn main power off and remove Video PCB Assy.
(2) Turn on main power and power switch.
(3) Check state of green lamp.
DC/DC power
circuit faulty.
Replace DC/DC
power PCB Assy.
No
Video circuit
faulty.
Replace Video
PCB Assy.
Is voltage at
connector on
DC/DC power PCB
normal?
Yes
Main/Digital
circuit faulty.
Replace Main
/Digital PCB Assy.
No
Is green lamp lit
continuously?