Mitsubishi Electric XD221U, Service Manual

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DIAGNOSIS INFORMATION
This chapter provides technicians with electronic background how to maintain the product.
Moreover, you can get the appropriate operation to solve some complicated problems of
component repairing and professional problems.
Troubleshooting
Warning
• Do not directly look into the lens to avoid eyesight damages.
• The projector is equipped with ventilation holes (intake) and ventilation holes (exhaust). Do not block or place anything near
these slots, or internal heat build-up may occur, causing picture degradation or damage to the projector.
Confirm Software and hardware
(1) Confirm FW version and lamp using hours
(2) Confirm LED indicator
Projector Status
LED
Meaning
Power LED Status LED
Color Status Color Status
Standby Red Solid - - The projector is powered and ready.
Lamp Standby
Green Solid Green Blinking About minute.
Power On Green Solid Green Solid The projector is powered.
Lamp failure
- - Green Blinking To replace lamp and reset the lamp hour.
Fan failure
Green Blinking Green Solid To check if the fan is clogged with dust or dirt and lean it.
Lamp life warning
- - Amber Solid
The lamp has reached its end of life and must be changed
soon. The lamp will continue to operate until it fails.
Power off - - Green
Flashing
The projector is shutting down. The fans motor is cooling the
lamp for shutdown. Do not unplug the power cord or turn the
power switch off before the lamp LED turns off. The fan mo
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tor will turn off when the lamp has cooled.
Over temperature Green Solid Red Solid
The projector believes the temperature is too high. The lamp
will turn off.
(3) Confirm cable connection well.
(4) Confirm Main board version