Christie Digital Systems Lwu420 Operating Guide

69LWU420 User Manual-Operating Guide 020-000262-01 Rev. 1 (06-2010)
  Maintenance 
 
Consumption of the battery makes the clock not to work correctly. When the clock is wrong 
or it has stopped, please replace the battery according to the following procedures. 
  Internal clock batter y  
 
1.  
Turn the projector off, and unplug the power cord. Allow the 
projector to cool suffi ciently. 
  2.  
After making sure that the projector has cooled adequately, 
slowly turn over the projector, so that the...

70LWU420 User Manual-Operating Guide 020-000262-01 Rev. 1 (06-2010)
Maintenance
Other care
In order to ensure the safe use of your projector, please have it cleaned and 
inspected by your dealer about once every year.
1.Turn the projector off, and unplug the power cord. Allow the projector to cool 
sufficiently.
2.After making sure that the projector is cool adequately, lightly wipe the lens 
with a commercially available lens-cleaning wipe. Do not touch the lens 
directly with your hand. If the lens is...

71LWU420 User Manual-Operating Guide 020-000262-01 Rev. 1 (06-2010)
Troubleshooting
Troubleshooting
Related messages
When the unit's power is on, messages such as those shown below may be 
displayed. When any such message is displayed on the screen, please follow the 
instructions described below. If the same message is displayed after the remedy, 
or if a message other than the following appears, please contact your dealer or 
service company.
Although these messages will be automatically...

72LWU420 User Manual-Operating Guide 020-000262-01 Rev. 1 (06-2010)
Troubleshooting
Regarding the indicator lamps
Lighting and flashing of the POWER indicator, the LAMP indicator, and the TEMP 
indicator have the meanings as described in the table below. Please follow the 
instructions within the table. If the same indication is displayed after the remedy, 
or if an indication other than the following is displayed, please contact your dealer 
or service company.
(Continued on next page)
POWER...

73LWU420 User Manual-Operating Guide 020-000262-01 Rev. 1 (06-2010)
Troubleshooting
• When the interior portion has become overheated, for safety 
purposes, the power source is automatically turned off, and the indicator lamps 
may also be turned off. In such a case, press the “” (OFF) side of the power 
switch, and wait at least 45 minutes. After the projector has sufficiently cooled 
down, please make confirmation of the attachment state of the lamp and lamp 
cover, and then turn the power on again....

74LWU420 User Manual-Operating Guide 020-000262-01 Rev. 1 (06-2010)
Troubleshooting
Phenomena that may be easy to be mistaken for machine defects
►Never use the projector if abnormal operations such as smoke, 
strange odor, excessive sound, damaged casing or elements or cables, penetration 
of liquids or foreign matter, etc. should occur. In such cases, immediately turn off the 
power switch and then disconnect the power plug from the power outlet. After making 
sure that the smoke or odor has stopped,...

75LWU420 User Manual-Operating Guide 020-000262-01 Rev. 1 (06-2010)
Troubleshooting
Phenomena that may be easily mistaken for machine defects (continued)
(Continued on next page)
Phenomenon Cases not involving a machine defectReference
page
Sound does not 
come out.The signal cables are not correctly connected.
Correctly connect the audio cables.10
The MUTE function is working.
Restore the sound pressing the 
MUTE or VOLUME button 
on the remote control.18
The volume is adjusted to an extremely low...

76LWU420 User Manual-Operating Guide 020-000262-01 Rev. 1 (06-2010)
Troubleshooting
Phenomena that may be easily mistaken for machine defects (continued)
• Although bright spots or dark spots may appear on the screen, this 
is a unique characteristic of liquid crystal displays, and it does not constitute or 
imply a machine defect. NOTE
Phenomenon Cases not involving a machine defectReference
page
Video screen
display freezes.The FREEZE function is working.
Press the 
FREEZE button to restore the screen...

77LWU420 User Manual-Operating Guide 020-000262-01 Rev. 1 (06-2010)
Warranty and after-ser vice / Specifications
Warranty and after-service
If a problem occurs with the equipment, first refer to the “Troubleshooting” and 
run through the suggested checks. If this does not resolve the problem, please 
contact your dealer or service company. They will tell you what warranty condition 
is applied.
Specifications
• These specifications are subject to change without notice. NOTE
Item Specifications
Product name...

78LWU420 User Manual-Operating Guide 020-000262-01 Rev. 1 (06-2010)
Specifications
Specifications (continued)
[unit: mm]