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Problem Check Sheets
If your projector develops a problem, make a copy of these check sheets and use
them to explain the problem symptoms more clearly when calling for service.
Problems
Power does not turn on
Nothing appears on the screen
A message appears
No image signal is being input
These signals cannot be handled by
this projector.
Blue screen (blue background)
Black screen (black background)
Projected images
User's logo (no message appears)
Image is truncated or small
Only part of the image is displayed
Image is smaller than size of screen
Image has keystone distortion
Several pixels are missing
Image quality is poor
Image is blurry and out of focus
Image contains striped patterns
Image flickers
Characters appear to be missing
Audio (only models with built-in speaker)
No sound is heard
Volume is low
Sound is distorted
Wrong sound is heard
Has the connected equipment been set
to output audio?
Does the sound come out when
external speakers are connected?
(if equipped with an Audio Out port)
Color is poor or too dark
Too dark
Color is poor or too dark (video)
Color is poor or too dark (computer)
Color different from TV/CRT
Menus
Menus appear
Setting
Sleep Mode : ON
About (Video)
Lamp
Video Signal
About (Computer)
Lamp
Frequency
SYNC Polarity
SYNC Mode
Resolution
Refresh Rate
Menus
Menus appear
Audio
Audio input (
Volume
(
h
AUTO
NTSC
Other
h
H
Hz
V
Hz
H
Positive
Negative
V
Positive
Negative
Separate
Composite
Sync on
Green
Hz
)
)
15
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