Troubleshooting - JVC DLA-SH4KNL Instructions Manual

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Troubleshooting

Check the following points before sending this product for
repair.
The following phenomena are not malfunctions.
If there is no abnormality on the screen when
the phenomena below appear, they are not
malfunctions.
● The top or front part as well as the rear of the
projector unit is hot
● A creaking sound is heard from the projector
Symptom
● Is the power cord disconnected?
Power is not
supplied
● Is the main power supply switched
turned on?
● Is the lamp in the cool down mode?
● Is the lamp protection function
triggered?
(This function is triggered when the
power shuts down such as during
power failures.)
● Is the lamp near exhaustion?
Image is dark
● Are the air inlets and vent holes
Projector works
when the power blocked?
is turned on, but
stops abruptly
● Is the temperature of the room high?
after a few
minutes
● Are the filters dirty?
● Is the lens cap removed?
Video image
does not appear
● Are devices properly connected?
● Is the power of the connected
devices turned on?
● Are correct signals being output
from the connected devices?
● Are the signals of the connected
devices possible input signals?
● Is the image temporarily hidden?
● Is the projector out of focus?
Video image is
blur
● Is the projection distance too short
or too long?
Probable Cause
● Device noise is heard from the interior of the projector
● There is color bleeding on the screen
When the projector fails to run properly due to
external noises, perform the following operations.
A
Check to ensure that the power is shut down.
Unplug the power cord, and insert again.
B
Turn on the power of the projector.
A sound maybe heard when the lamp burn
out. However, this is not a hazard.
D-ILA devices are manufactured using
extremely high-precision technology.
However, some of the pixels may not lit up or
remain permanently lit up.
Corrective Action
● Insert the power cord (plug) properly.
● Turn on the main power supply switch
of the projector unit.
● Turn on the power again after the cool
down mode ends.
● Wait till the temperature of the lamp has
gone down.
(Turn on the main power supply switch to
run the fan and cool down the lamp.) Turn
on the power after about 180 seconds.
● Check the Lamp Time setting of the
Main menu. When the lamp life is near
its end, please consult your authorized
dealer.
● Turn off the main power supply switch,
and remove the blockage. After
removing, turn on the power again.
● Set the temperature of the room or the
surrounding temperature of this
projector to an appropriate level.
● Clean the filters.
● Remove the lens cap.
● Connect the devices correctly.
● Turn on the power of the connected
devices.
● Configure the connected devices
correctly.
● Check to ensure that they are possible
input signals, and input compatible
signals accordingly.
● Set Hide of the Image menu to
OFF to display the image.
● Adjust the focus using Focus of the
Lens menu.
● Set it to a correct distance.
Reference Page
A Page 23
A Page 23
A Page 29
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A Page 30
A Page 10 to
12, 29
A Page 49
A Page 42
A Page 10
A Page 19, 21
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A Page 18, 20
A Page 29, 32
A Page 29, 35
A Page 16, 17