Christie DS Series User Manual page 132

Issues that may be easy to be mistaken for machine defects (continued)
Issue
Pictures appear
blurry.
Some kind
of image
degradation
such as
flickering or
stripes appear
on screen.
RS-232C does
not work.
(continued on next page)
LWU900-DS/LHD878-DS/LWU755-DS
User's Manual - Operating Guide
Cases not involving a machine defect
The lens cover is attached.
Remove the lens cover.
Either the focus and/or horizontal phase settings are
not properly adjusted.
Adjust the focus using the FOCUS + / - buttons on
the remote control or FOCUS button and ◄/► cursor
buttons on the projector, 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.
When the projector is operating in LIGHT 75%,
LIGHT 50% or QUIET MODE, flickering may appear
on screen.
Set LIGHT OUTPUT in the LIGHT & FILTER menu to
NORMAL(100).
The OVER SCAN ratio is too big.
Adjust OVER SCAN in the SIZE AND POSITION menu
smaller.
Excessive VIDEO NR.
Change the setting of VIDEO NR in the INPUT menu.
The FRAME LOCK function cannot work on the
current input signal.
Set FRAME LOCK in the INPUT menu to OFF.
The POWER SAVE/NETWORK-WOL function is
working.
Select NORMAL or QUICK START for STANDBY MODE
item in the SETUP menu.
The COMMUNICATION TYPE for the CONTROL port
is set to NETWORK BRIDGE.
Select OFF for COMMUNICATION TYPE item in the
OPTION - SERVICE - COMMUNICATION menu.
130
Troubleshooting
Reference
page
–
38, 65
116
73
64
66
69
76
100
020-001587-01 Rev. 1 (12-2018)
LIT MAN USR DS Series