– 16 –
OSD is not displayed.
Power lamp : Lighted green.
(10 sec or more)
Check 4
Start
Yes
No
Is picture
displayed on screen
when a signal is input?
Video/S-video input signals are abnormal.
Power lamp : Lighted green
(10 sec or more)
Check 5
Signal processing
circuit faulty.
Replace Main/Digital
PCB Assy.
No
Yes
Is voltage at
each connector on Power
Supply Unit
normal ?
Power Supply
circuit faulty.
Replace Power Supply
Unit.
No
Yes
Is voltage at each
connector on DC/DC
power PCB normal ?
DC/DC power
circuit faulty.
Replace DC/DC
power PCB Assy.
Yes
No
Is picture displayed
normally when PDP is
changed ?
PDP panel faulty.
Replace PDP panel.
Signal processing
circuit faulty.
Replace Main /Digital
PCB Assy.
Start
Yes
No
Can this unit
select only RGB 1 or
RGB 2 mode ?
Install video PCB
Assy firmly.
Yes
Is picture
displayed on screen
normally when new video
PCB unit installed ?
Video PCB Assy
faulty.
Replace Video
PCB Assy.
Yes
Is signal input level
normal ?
Signal prosessing
circuit faulty.
Replace Main/Digital
PCB Assy.
No
Check input signal.