Christie DS Series Service Manual page 25

Picture is not displayed correctly via VIDEO port.
Try
whether
changing INPUT PCB can
fix the problem.
OK
Replace INPUT PCB.
Signal from MONITOR OUT port is not displayed correctly.
Can
the projector
display picture correctly
via COMPUTER IN
port?
YES
Replace INPUT PCB.
Audio signal from AUDIO OUT port has some problem.
(Make sure the state of HDMI AUDIO, MUTE and Volume setting.)
Try
whether
changing INPUT PCB can
fix the problem.
OK
Replace INPUT PCB.
LWU900-DS/LHD878-DS/LWU755-DS
Service Manual
LWU900-DS / LHD878-DS / LWU755-DS
BAD
Replace MAIN PCB.
NO
Check the flow on page 23.
BAD
Replace MAIN PCB.
24
020-001586-01 Rev. 1 (02-2021)
LIT MAN SERV DS Series