Troubleshooting - JVC DLA-G150CLU Operating Instructions Manual

Troubleshooting

Solutions to common problems related to your projector are described here. If none of the solutions presented here solves the
problem, unplug the projector and consult an authorized dealer or Service Center.
Symptom Probable cause
Power is not • Is the power cord disconnected?
supplied.
• Is the MAIN POWER switch turned
on?
• Is the fuse blown?
• Is the lamp-replacement opening cover
closed correctly?
• Is the filter closed correctly?
• Has the lamp life expired? (Has the
lamp use time reached 1000 hours in
the normal mode?)
(Has the lamp use time reached 2000
hours in the LPC or LOC mode?)
Light is not emitted, • Is the lens cap removed?
or light level is low.
• Is the lamp life near its end?
With power on, • Is the air intake or exhaust area
operation starts but blocked?
stops in a few
minutes.
Video image does not • Is the correct input selected?
appear.
• Are devices connected correctly?
• Are signals being supplied from the
connected devices?
• Are input signals (scanning frequency,
etc.) appropriate?
• Is the correct color system selected?
• Is brightness adjusted correctly?
• Is video turned off by pressing the
HIDE button?
• During DVI input, are image signals
output from the computer graphic
board (DVI output terminal)?
(During DVI input, depending on the
computer settings, there may be no
signal input or an error may occur (blue
screen).)
Video image dims. • Is focus adjusted correctly?
• Is distance too short or too long?
• Are Tracking and Phase adjusted
correctly?
Video image is • Is picture quality (Brightness, etc.)
abnormally dark or adjusted correctly?
bright.
Video image freezes. • Was the FREEZE button on the
remote control pressed?
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Corrective action Page
• Insert the power cord (plug) firmly. 30
• Turn on the MAIN POWER switch. 32
• Turn off the MAIN POWER switch and 57
check the fuse.
If it is blown, replace it
• Turn off the MAIN POWER switch, close 7, 32, 60
the lamp-replacement opening cover
correctly, and turn on the MAIN POWER
switch again.
• Turn off the MAIN POWER switch, fit the 7, 32, 63
filter correctly, and turn on the MAIN
POWER switch again.
• Turn off the MAIN POWER switch, replace 32, 58,
with a new light-source lamp, and turn on 59, 62
the MAIN POWER switch.
Reset the lamp use time after replacing with
a new lamp.
• Remove the lens cap. 30
• Check the lamp use time on the menu, and 56, 58,
if the lamp life is near its end, arrange for a 59
replacement lamp, or replace a little earlier.
• Turn off the MAIN POWER switch, remove 6, 7, 32
any blocking objects, and turn on the MAIN
POWER switch again.
• Select the correct input with the VIDEO and 9, 13
PC buttons.
• Connect devices correctly. 11, 22
• Set connected devices correctly. –
• Check if the signal is appropriate (scanning 22, 23
frequency, etc.) and input the appropriate
signal.
• Set the color system to AUTO or to the 45
correct dedicated color system.
• Adjust brightness on the menu. 49
• Press the HIDE button to turn video on. 10, 12,
35
• If this happens, turn off the power to both 22
the projector and the computer, and then
turn the projector back on before turning the
computer on again. Then correctly set the
computer's graphic board.
• Adjust focus. 12, 34
• Set the projector at the correct distance. 18, 76,
77
• If satisfactory results are not obtained by 13, 36,
pressing the QUICK ALIGN. button to 47
conduct quick alignment, adjust Tracking
and Phase on the menu.
• Adjust picture quality on the menu. 49
• Press the FREEZE button to release 12, 37
freezing.
Symptom Probable cause
A part of image is • Was the DIGITAL ZOOM T button on
magnified. the remote control pressed?
Color is poor or • Is picture quality (color density, etc.)
unstable. adjusted correctly?
• Is the correct color system selected?
• Are signals (scanning frequency, etc.)
of the connected devices appropriate?
The upper part of the • While computer system signal is input,
video image bows or isn't a sync signal for composite sync
distorts. (Cs) or G on sync being input?
• Isn't signal with much jitter or skew
distortion being input from a video
deck?
Video image • Is video picture turned off by pressing
suddenly go out. the HIDE button?
Remote control unit • Are batteries installed correctly?
does not work.
• Are batteries exhausted?
• Is there a shielding object between the
remote control unit and the remote
sensor?
• Is the distance too long?
• Is either side of remote cable
disconnected?
* This device uses a computer. External noise may cause it to malfunction. If this happens, turn the power off, remove the
electric plug from the wall outlet. Then insert the electric plug back into the wall outlet, turn the power back on and check the
operation.
When warning indication is shown by the blinking indicators:
The warning status will be notified by the combination lighting of the projector's indicators.
For the warning contents and the action to be taken, refer to "Warning Indication" on page 66.
Maintenance
• Stains on the cabinet
These should be wiped off with a soft cloth. If the cabinet is heavily stained, wipe it with a cloth soaked in water-diluted
neutral detergent and wring well, then wipe clean with a dry cloth.
• Since the cabinet may deteriorate in quality, become damaged, or show paint peeled, note the following:
– Do not wipe with rough cloth.
– Do not wipe vigorously.
– Do not wipe with thinner or benzene.
– Do not apply any volatile substance such as insecticides.
– Do not allow any rubber or vinyl article to remain in contact with the cabinet for a long time.
• Stains on the lens
These should be cleaned off with commercially available lens blowers or lens cleaning paper (for cleaning glasses and
cameras).
Do not use liquid cleaning agents. This could cause the surface coating to be removed.
Do not rub, scratch or hit the lens as its surface is prone to damage.
Troubleshooting
Corrective action Page
• Press the PRESET button to restore the 12, 37
original video screen.
• Adjust picture quality on the menu. 49
• Set the color system to AUTO or to the 45
correct dedicated color system.
• Check if the signal is appropriate (scanning 22
frequency, etc.), and input the appropriate
signal.
• Input separate sync signals for vertical sync 11, 28
(V) and horizontal sync (H) signals.
• Input signals with little jitter or distortion. –
Use a TBC or a device with a built-in TBC.
• Turn on video picture by pressing the HIDE 10, 12,
button. 35
• Match the polarities of batteries correctly (+ 14
to + and – to –).
• Replace with new batteries. 14
• Remove any shielding objects. 20
• Use the remote control unit at a nearer 20
point.
• Firmly insert the remote cable when using 21
the remote control unit as the wired one.
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