JVC DLA-M4000LU

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.

Video image does not

appear.

With power on,

operation starts but

stops in a few minutes.

Video image dims.

Color is poor or

unstable.

• Is the power cord disconnected?

• Check that AC 220V — 240V is

supplied.

• Is the main power switch turned on?

• Is the correct power voltage used?

• Has the breakertripped open?

• Is the lens cap removed?

• Is the lamp life near its end?

• Check that the breaker is closed.

• Is the correct input selected?

• Are connected devices connected

correctly?

• Are signals being supplied from the

connected devices?

• Is the source setting correctly selected?

Isn’t a wrong source (forced mode)

selected?

• Is brightness adjusted correctly?

• Is focus adjusted correctly?

• Is distance too short or too long?

• Are TRACKING and PHASE adjusted

correctly?

• Is picture quality (color density, etc.)

adjusted correctly?

• Has the lamp protective function

activated? (This can occur if the power

is shut down due to a power failure,

etc.)

• Insert the power cord (plug) firmly.

• Remove the lens cap.

• Has the projector been moved from its

installed place?

• Wait until the lamp has cooled down.

(Turn on the main power sand let the

fans cool the lamp.)

About 10 minutes later, press

OPERATE on the remote control.

• Turn on the MAIN POWER switch.

• 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.

• Set connected devices correctly.

• Check if the signal is correct as input

(scanning frequency, etc.).

Input the appropriate signal.

• Connect connected devices correctly.

• Select the correct inputs with the AV

and RGB buttons.

• Set the source setting to AUTO or to

the correct dedicated source (forced

mode).

• Adjust brightness on the menu.

• Adjust focus with the remote control’s

FOCUS (+/–) buttons.

• Set the projector at the correct

distance.

• Adjust TRACKING and PHASE on the

menu.

• Adjust picture quality on the menu.

• Is the air intake or exhaust area

blocked?

• Check the installed position.

• Are input signals (scanning frequency,

etc.) appropriate?

3, 65

––––

41, 59

––––

8, 9, 16

20, 21

––––

44, 46

38, 40

27, 30

30, 36

38, 40

––––

(To be continued on the next page)

• Is the correct CLAMP selected? •Select the correct CLAMP on the

OPTION MENU. 41, 42

M4000LU p.61-63 00.10.3, 11:07 AM61