Christie D Series Service Manual page 40

6-12 Related Messages
these messages automatically disappear after several minutes, they reappear when the power is
turned on.
Message
LWU720i/LHD720i/LWU620i Service Manual
LWU720i / LHD720i / LWU620i
There is no input signal.
signal source.
disconnected. Re-connect them.
The horizontal or vertical frequency of the input signal is
specs.
An improper signal is input.
specs.
The internal temperature is rising.
Turn the power off, and allow the projector to cool down at
turn the power ON again.
Use the unit within the usage temperature parameters (0°C
to 40°C or 45°C).
Is the exhaust air (hot/cold) from peripheral equipments
blowing against the ventilation opening of projector?
For details of ALTITUDE, refer to ALTITUDE of SERVICE in the
OPTION menu. If the projector is used with a wrong setting, it
may cause damage to the projector itself or the parts inside.
Immediately turn the power off, and clean or change the air
section of this manual. After you have cleaned or changed the
The button operation is not available.
When this message is displayed after replacing the ballast,
wrong power unit (ballast) has been installed.
When this message is displayed at the ordinary use, the power
unit (ballast) is out of order.
Replace the power unit (ballast).
Description
39