3M 9800 Руководство по эксплуатации - Страница 11
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Troubleshooting
Problem
Lamp does not illuminate but fan motor
runs.
Neither lamp nor fan energize.
Fan motor does not run but lamp
illuminates.
Lamp and fan both work but accessory
outlets do not have power.
After replacing a burned out lamp, the
new lamp fails.
Short lamp life: Lamps seem to fail
before expected life span.
Projected image is wider at the top than
bottom (Vertical Keystoning).
Projected image higher on one side
(Horizontal Keystoning).
Projected image is dim.
Projected image does not have uniform
brightness.
Yellow/orange to brown or blue colours
appear in corners of image.
Colour, focus or image problem.
3M 9800 Operator's Guide
Probable Causes
c. Control Panel door open.
d. Lamp changer dial not engaged.
e. Lamp not seated properly.
f. Burned out lamp.
a. Projector not plugged in.
b. Stage cover not completely closed.
c. No power at wall outlet.
a. Fan blade/motor obstructed.
b. Burned out fan motor.
a. Outlets overloaded, circuit breaker
tripped.
a. Defective lamp was installed.
b. Possible electrical problem.
a. Defective lamps.
b. High line voltage.
c. Check Internal Voltage Switch
setting.
d. Lamp Voltage Protector setting to
low.
a. Screen not aligned at 90 angle to
projected light beam.
a. Projector not aligned at 90 angle to
screen.
a. Dirty stage glass, lenses, mirrors.
b. Condenser lens bracket open or
retaining clip not engaged.
c. High/low lamp control setting
incorrect.
a. Lamp not aligned properly.
a. Lamp not at best location for
projector to screen distance.
a. Optics out of alignment.
Solution
a. Close control panel door.
b. Fully rotate lamp changer dial until it
stops.
c. Seat lamp squarely in socket.
d. Replace lamp.
a. Plug projector into outlet.
b. Close stage cover to engage safety
interlock.
c. Verify outlet has power.
a. Call for service.
b. Call for service.
a. Unplug accessories and reset circuit
breaker. Accessories must not
exceed 5 amps total.
a. Replace lamp.
b. If new lamp fails immediately, you
may have an electrical problem. Call
for service.
a. Document actual lamp life, then
contact Lamp Supplier or 3M Service
Center.
b. Have electrical line checked by an
electrician.
c. Set internal voltage switch to Low
setting.
d. Call for Service.
a. Tilt projection screen toward
projector until image width is equal
at top and bottom.
a. Rotate projector until image height is
equal on both sides.
a. Remove surface dirt.
b. Close and secure lens bracket with
retaining clip.
c. Set control to high for brightest
image.
a. Properly seat lamp in socket and/or
fully rotate lamp changer into
position 1 or 2.
a. Rotate colour tuning dial to remove
colours in corners.
a. Call for service.
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