Christie D Series Service Manual page 23

Cannot communicate via RS-232C.
Is STANDBY
MODE set to "POWER
SAVE"?
YES
Set STANDBY MODE as
"NORMAL" in the SETUP menu.
1. PC power supply OFF
2. Connection of cable
3. Projector starting
4. PC starting
* When not operating: PC set up change or cable change.
LWU720i/LHD720i/LWU620i Service Manual
LWU720i / LHD720i / LWU620i
Are pins (2)
NO
and (3) of the RS-232C
cable crossed?
YES
Are the
signals on each pin of the
cable?
YES
Replace MAIN PCB.
or
Replace INPUT PCB.
NO
Use cross cable.
NO
(2): RX
(3): TX
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