Christie APS Series Service Manual page 21

No sound
(Make sure the state of MUTE, Volume and SPEAKER setting)
Disconnect
the speaker from the
PWB assembly Main and
measure its
resistance.
about 8 Ω
Replace MAIN PCB
Cannot communicate via RS-232.
Is STANDBY MODE
set to "SAVING" or
"NETWORK(WOL)"?
Yes
Set STANDBY MODE as
"NORMAL" or "QUICK START"
in the SETUP menu.
LWU650-APS/LWU530-APS
Service Manual
LWU650-APS / LWU530-APS
infinity
Replace
Speaker
Is
No
COMMUNICATION TYPE
in COMMUNICATION
set to "OFF"?
Yes
Are the serial
settings of PC and projector
same?
Yes
Are pins (2)
and (3) of the RS-232 cable
crossed?
Yes
Are there
signals on each pin
of the cable?
Yes
Replace MAIN PCB
20
No
Set COMMUNICATION TYPE in
COMMUNICATION to "OFF".
No
Set the BAUD RATE and PARITY
in the COMMUNICATION - SERIAL
SETTINGS to the same as PC.
No
Use cross cable.
No
Check your PC setup.
020-001522-01 Rev. 1 (11-2018)
LIT MAN SERV APS Series