ViewSonic PJ656 User Manual page 54

Troubleshooting
Phenomena that may be easy to be mistaken for machine defects (continued)
Phenomenon
Pictures appear
dark.
Pictures appear
blurry.
NOTE • Although bright spots or dark spots may appear on the screen, this
is a unique characteristic of liquid crystal displays, and it does not constitute or
imply a machine defect.
ViewSonic
Cases not involving a machine defect
The brightness and/or contrast are adjusted to an
extremely low level.
Adjust BRIGHTNESS and/or CONTRAST settings to a
higher level using the menu function.
The WHISPER function is working.
Select NORMAL for the WHISPER item in the SETUP
menu.
The lamp is approaching the end of its product
lifetime.
Replace the lamp.
Either the focus and/or horizontal phase settings are
not properly adjusted.
Adjust the focus using the focus ring, and/or H PHASE
using the menu function.
The lens is dirty or misty.
Clean the lens referring to the section "Caring for the lens".
PJ656
Reference
page
25
25
40, 41
30
44
50