JVC L20U DLA-L20U User instruction manual (2.6MB) - Page 66

Troubleshooting

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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 a authorized dealer or service center. Symptom Probable cause Power is not supplied. • Is the power cord disconnected? • Is the main power switch turned on? Corrective action • Insert the power cord (plug) firmly. • Turn on the MAIN POWER switch. Page 24 26 • Is fuse burned out? • Turn off the main power switch, and check the fuse. If it is burned out, replace it. • Is the lamp-replacement opening cover • Turn off the MAIN POWER switch, closed correctly? close the lamp-replacement opening cover, and turn on the main power switch again. • Is the air filter closed correctly? • Turn off the MAIN POWER switch, fit the air filter correctly, and turn on the main power switch again. • Has the lamp life expired? (Has the lamp use time reached 1000 hours?) • Turn off the MAIN POWER switch, replace with a new light-source lamp, and turn on the MAIN POWER switch. Reset the lamp use time after replacing with a new lamp. Light is not emitted, or light level is low. • Is the lens cap removed? • Is the lamp life near its end? • Remove the lens cap. • Check the lamp use time on the menu, and if the lamp life is near its end, arrange for a replacement lamp, or replace a little earlier. With power on, • Is the air intake or exhaust area operation starts but blocked? stops in a few minutes. • Turn off the MAIN POWER switch, remove any blocking objects, and turn on the MAIN POWER switch again. 60 26, 62 26, 64 26, 61, 63 24 44 6, 8, 15, 26 Video image does not • Is the correct input selected? • Select the correct inputs with the 27 appear, or audio VIDEO and COMPUTER buttons. sound does not occur. • Are connected devices connected • Connect connected devices correctly. 20 correctly? While playing video, image is sometimes disturbed. • Are signals being supplied from the connected devices? • Set connected devices correctly. • Are input signals (scanning frequency, • Check if the signal is correct as input etc.) appropriate? (scanning frequency, etc.). Input the appropriate signal. • Is the source setting correctly selected? • Set the source setting to AUTO, or to Isn't the wrong source (forced mode) or the correct dedicated source (forced channel selected? mode) or channel. • Is brightness adjusted correctly? • Adjust brightness on the menu. • Is volume set at minimum? • Adjust volume with the remote control's VOL. (+/-) buttons. • Aren't video and audio turned off by pressing the remote control's AV MUTING button? • Press the remote control's AV MUTING button to turn video and audio on. • Were adjustments performed correctly during installation? (Have you added any new device after installation adjustments?) • To have installation adjustments performed, ask the dealer where your projector or service center. --- 19 47, 49, 54 40 28 29 Video image dims. • Is focus adjusted correctly? • Is distance too short or too long? • Are TRACKING and PHASE adjusted correctly? • Adjust focus with the remote control's FOCUS (+/-) buttons. • Set the projector at the correct distance. • Adjust TRACKING and PHASE on the menu. 28 16, 17, 71 32, 38 ENGLISH (To be continued on the next page) 65

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65
ENGLISH
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 a authorized dealer or service center.
Symptom
Probable cause
Corrective action
Page
Power is not supplied.
Light is not emitted,
or light level is low.
With power on,
operation starts but
stops in a few minutes.
Video image does not
appear, or audio
sound does not occur.
While playing video,
image is sometimes
disturbed.
Video image dims.
• Is the power cord disconnected?
• Is the main power switch turned on?
• Is fuse burned out?
• Is the lamp-replacement opening cover
closed correctly?
• Is the air filter closed correctly?
• Has the lamp life expired? (Has the
lamp use time reached 1000 hours?)
• Is the lens cap removed?
• Is the lamp life near its end?
• Is the air intake or exhaust area
blocked?
• Is the correct input selected?
• Are connected devices connected
correctly?
• Are signals being supplied from the
connected devices?
• Are input signals (scanning frequency,
etc.) appropriate?
•
Is the source setting correctly selected?
Isn’t the wrong source (forced mode) or
channel selected?
• Is brightness adjusted correctly?
• Is volume set at minimum?
• Aren’t video and audio turned off by
pressing the remote control’s AV
MUTING button?
• Were adjustments performed correctly
during installation? (Have you added
any new device after installation
adjustments?)
• Is focus adjusted correctly?
• Is distance too short or too long?
• Are TRACKING and PHASE adjusted
correctly?
• Insert the power cord (plug) firmly.
• Turn on the MAIN POWER switch.
• Turn off the main power switch, and
check the fuse. If it is burned out,
replace it.
• Turn off the MAIN POWER switch,
close the lamp-replacement opening
cover, and turn on the main power
switch again.
• Turn off the MAIN POWER switch, fit
the air filter correctly, and turn on the
main power switch again.
• Turn off the MAIN POWER switch,
replace with a new light-source lamp,
and turn on the MAIN POWER switch.
Reset the lamp use time after replacing
with a new lamp.
• Remove the lens cap.
• Check the lamp use time on the menu,
and if the lamp life is near its end,
arrange for a replacement lamp, or
replace a little earlier.
• Turn off the MAIN POWER switch,
remove any blocking objects, and turn
on the MAIN POWER switch again.
• Select the correct inputs with the
VIDEO and COMPUTER buttons.
• Connect connected devices correctly.
• Set connected devices correctly.
• Check if the signal is correct as input
(scanning frequency, etc.).
Input the appropriate signal.
• Set the source setting to AUTO, or to
the correct dedicated source (forced
mode) or channel.
• Adjust brightness on the menu.
• Adjust volume with the remote control’s
VOL. (+/–) buttons.
• Press the remote control’s AV MUTING
button to turn video and audio on.
• To have installation adjustments
performed, ask the dealer where your
projector or service center.
• Adjust focus with the remote control’s
FOCUS (+/–) buttons.
• Set the projector at the correct
distance.
• Adjust TRACKING and PHASE on the
menu.
24
26
60
26, 62
26, 64
26, 61, 63
24
44
6, 8, 15, 26
27
20
–––
19
47, 49, 54
40
28
29
28
16, 17, 71
32, 38
(To be continued on the next page)