Marquee 8521 Ultra Green (HUD) User's Manual
4-2
Maintenance
4.1.5 Servicing
If any of the following conditions exist, unplug the projector from the power outlet and refer service to qualified
service personnel.
•
The power cord has been damaged.
•
Liquid has been spilled into the projector.
•
The projector has been exposed to excessive moisture.
•
The projector does not operate normally.
•
The projector has been dropped or the case has been damaged.
•
Projector performance has deteriorated.
Do not attempt to service the projector yourself. All servicing must be performed by a qualified VDC Display
Systems service technician. If replacement parts are required, it is important that only VDC Display Systems
approved parts are used. Other parts may result in fire, electric shock or risk of personal injury.
!
WARNING:
THE PROJECTOR IS INTERNALLY SHIELDED TO PROTECT THE
USER FROM EXPOSURE TO SOFT X-RAY RADIATION. IMPROPER SERVICING
OR SHIELD REMOVAL MAY RESULT IN PERSONAL INJURY.
!
CAUTION
: In rare instances, flashing lights can trigger an epileptic seizure. During
ACON usage persons with epilepsy should look away from the screen.
4.2 Cleaning
Clean the projector when required. Before cleaning, always unplug the projector from the power outlet.
4.2.1 Lens
Cleaning
To avoid the risk of scratching the lenses, only clean the lenses if absolutely required. A small amount of dust on
the lenses will have very little effect on picture quality. If the lenses must be cleaned, use a DRY soft cotton cloth.
Rub gently in a circular motion.
4.2.2 Case
Cleaning
Clean the case with a soft dampened cloth. Use a mild commercial cleaner. Do not use liquid or aerosol
cleaners.
4.3 Trouble-shooting
If the projector is not operating properly, note the
symptoms of the problem and use the following
guide to assist you. If you cannot resolve the
problem yourself, contact your dealer for assistance.
ERROR EHT
DIAGNOSTICS
V.FAIL
H.FAIL
C
LVPS
POWER 0
1
STANDBY
Figure 4-1. Rear Panel LEDs
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