Troubleshooting – JVC DLA-SH4KNL User Manual
Page 38
38
Others
Check the following points before sending this product for
repair.
The following phenomena are not malfunctions.
Ⅵ 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
● Device noise is heard from the interior of the projector
● There is color bleeding on the screen
Ⅵ 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.
Ⅵ A sound maybe heard when the lamp burn
out. However, this is not a hazard.
Ⅵ D-ILA devices are manufactured using
extremely high-precision technology.
However, some of the pixels may not lit up or
remain permanently lit up.
Troubleshooting
Symptom
Probable Cause
Corrective Action
Reference Page
Power is not
supplied
● Is the power cord disconnected?
● Insert the power cord (plug) properly.
● Is the main power supply switched
turned on?
● Turn on the main power supply switch
of the projector unit.
● Is the lamp in the cool down mode?
● Turn on the power again after the cool
down mode ends.
● Is the lamp protection function
triggered?
(This function is triggered when the
power shuts down such as during
power failures.)
● 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.
^
Image is dark
● Is the lamp near exhaustion?
● Check the ALamp TimeB setting of the
Main menu. When the lamp life is near
its end, consult the authorized dealer
from which this product is purchased
or any nearby JVC servicing center.
Projector works
when the power
is turned on, but
stops abruptly
after a few
minutes
● Are the air inlets and vent holes
blocked?
● Turn off the main power supply switch,
and remove the blockage. After
removing, turn on the power again.
● Is the temperature of the room high? ● Set the temperature of the room or the
surrounding temperature of this
projector to an appropriate level.
● Are the filters dirty?
● Clean the filters.
Video image
does not appear
● Is the lens cap removed?
● Remove the lens cap.
● Are devices properly connected?
● Connect the devices correctly.
● Is the power of the connected
devices turned on?
● Turn on the power of the connected
devices.
^
● Are correct signals being output
from the connected devices?
● Configure the connected devices
correctly.
^
● Are the signals of the connected
devices possible input signals?
● Check to ensure that they are possible
input signals, and input compatible
signals accordingly.
● Is the image temporarily hidden?
● Set AHideB of the Image menu to
AOFFB to display the image.
Video image is
blur
● Is the projector out of focus?
● Adjust the focus using AFocusB of the
Lens menu.
● Is the projection distance too short
or too long?
● Set it to a correct distance.
DLA-SH4_EN.book Page 38 Tuesday, January 15, 2008 6:07 PM