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1. TROUBLE SHOOTING
CAUSE
Power is not on
Power off during use
Lamp is not on
No image
ATTENTION
LED displays various error pattern. (See 2-2)
Be careful because the same error occurs in the bad contact of the cable as well.
LED error combination display always show the latest error.
SECTION 2
SERVICING DIAGRAMS
CHECK POINT
Flat cable of Power supply
(disconnect PJ003)
PJ003(connect PJ003)
LED Display
Lamp
"No Signal" OSD message
Test signal
R
G
B
CHEK ITEM
Standby voltage
(See page 2-3)
Standby voltage
Lighting pattern
Any damage inside
or not
Indicated or not
Signal shape
2-1
JUDGE
(NG)
→ Power supply is NG.
(OK)
→ Check next step.
(NG)
→ Main PCB is NG,
or any cable connection is NG.
See 2-2
(Damaged)
→ Change with new lamp.
(Not Damaged)
→ Check Lamp cover or lamp
power supply.
However, even if the lamp has
no damage, there is the case it
has trouble also.
(Indicated)
→ RGB/Video terminal is NG,
or Main PCB is NG.
(Not Indicated)
→ Check next step.
(Correct)
→ LCD panel is NG,
or PJ851/PJ901/PJ951 is NG.
(Incorrect)
→ Main PCB is NG.
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