37
TROUBLESHOOTING
Projected images are irregular.
Phenomenon
Power can not be
turned on.
If the following phenomenon occurs after the lamp has been replaced, check the following first:
Phenomenon
Projected images are distorted.
Projected images are
dark.
Projected images are
blurred.
White dots are seen in
projected images.
Black dots are seen in
the projected images.
A rainbow-color brume pattern
is seen on projected images.
Fine streak pattern is seen
on projected images.
Projected images are
disturbed.
Tint of projected images
is irregular.
Check/Countermeasure
• Adjust the projector and the screen so that they may become perpendicular to each other. (See Page 11.)
• Adjust BRIGHT and CONTRAST in the picture quality menu. (See Page 28.)
• Replace the lamp to a new one. (See Page 32 and 33.)
• Adjust the focus. (See Page 18 and 22.)
• Check if the lens cap is not put on.
• Clean the lens.
• Adjust “FINE” and “DIVIDING RATIO” in the signal setting menu. (See Page 30.)
• Adjust BRIGHT and CONTRAST in the picture quality menu. (See Page 28.)
• Adjust the projector and the screen so that they may become perpendicular to each other.
(See Page 11.)
• This phenomenon is proper to DLP projector and is not a failure. (A very small number of
pixels may be constantly lighting on or off, but this is not a failure. Pixels of more than
99.99% are effective ones.)
• This pattern is a color breaking noise that occurs in DLP system in principle. This is not a
failure.
• This phenomenon occurs due to the interference with the screen surface, and is not a
failure. Try to replace the screen or defocus the lens a little.
• Securely plug the cable connecting the external equipment to the bottom.
• Keep the projector away from equipment generating interfering radiowaves.
• Check if the cable connecting the external equipment is broken.
Phenomenon
A hot air comes out of
the exhaust vent.
Menu setting is dis-
abled.
Abnormal sounds oc-
cur.
Check/Countermeasure
• This air comes out after cooling the inside of the projector. It may feel hot, but is not a
failure.
• Affected by noises, the microcomputer in the projector may be malfunctioning.
–>Turn off POWER once, and after 2 minutes turn it on again.
• If POWER can not be turned off, turn off the main power switch and leave the projector as
it is for more than 10 minutes. Then, turn on POWER again.
• On rare occasions, a metallic clank occurs because the color wheel is rotating at a high
speed. But, this is not a failure.
Check/Countermeasure
• Securely fit the rear lamp cover. (See Page 32 and 33.)
• Reset the lamp-used-hours. (See Page 33.)
