Toshiba TLP-S30, Руководство по обслуживанию

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2-1
SECTION 2
SERVICING DIAGRAMS
1. TROUBLESHOOTING
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.
SYMPTOM
Power is not on
Power off during use
Lamp is not on
No image
CHECK
Flat cable of Power supply
(disconnect PJ1)
PJ1(connect PJ1)
LED Display
Lamp
"No Signal" OSD message
Measurring terminals
TP-R
TP-G
TP-B
INSPECT
Standby voltage
(See page 2-2)
Standby voltage
Lighting pattern
Any damage inside
or not
Indicated or not
Waveform
RESULT
(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.
There is a possibility that the
lamp may not show visible
damage, but may be still be
defective. Test with known good
lamp.
(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.