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 bottom is facing. 
  3.  
Turn the battery cover fully in the direction indicated “OPEN” 
using a coin or the like, and pick the cover up to remove it. 
  4.  
Pry up the battery using a fl athead screwdriver or the like to 
take it out. While prying it up, put a fi nger lightly on the battery 
since it may pop out of the holder. 
  5.  
Replace battery with new HITACHI MAXELL, Part No.CR2032 
or CR2032H. Slide the battery in under the plastic claw, and 
push it into the holder until it clicks. 
 
 
 
6.  
Replace the battery cover in place, then turn it in the direction 
indicated “CLOSE” using such as coins, to fi x. 
  
  
 
• The internal clock’s time will be reset when the battery is removed. 
   
Please reconfi gure the time via the menu or a web browser after replacing the battery.
   
 
(  
   Date/Time Settings in the User’s Manual (detailed) - Network Guide)  
 
NOTE 
 
Battery Cover 
CLOSE
CLOSEOPEN
CLOSEOPEN
OPEN
►Always handle the batteries with care and use them only as directed. 
Battery may explode if mistreated. Do not recharge, disassemble or dispose of in fi re. 
And also improper use may result in cracking or leakage, which could result in fi re, injury 
and/or pollution of the surrounding environment.
• Be sure to use only the batteries specifi ed.
• Make sure the plus and minus terminals are correctly aligned when loading a battery.
If the battery is placed in the battery holder upside-down, it may be hard to remove.
• Keep a battery away from children and pets. If swallowed consult a physician 
immediately for emergency treatment.
• Do not short circuit or solder a battery.
• Do not allow a battery in a fi re or water. Keep batteries in a dark, cool and dry place. 
• If you observe battery leakage, wipe out the leakage and then replace a battery. If the 
leakage adheres to your body or clothes, rinse well with water immediately.
• Obey the local laws on disposing the battery.  WARNING  
						

							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 flawed, soiled or fogged, it could cause deterioration of display 
quality. Please take care of the lens, being cautious of handling.
►Before caring, make sure the power switch is off and the 
power cable is not plugged in, and then allow the projector to cool sufficiently. 
The care in a high temperature state of the projector could cause a burn and/or 
malfunction to the projector.
►Never try to care for the inside of the projector personally. Doing is so 
dangerous. 
►Avoid wetting the projector or inserting liquids in the projector. It could result in 
a fire, an electric shock, and/or malfunction to the projector.
• Do not put anything containing water, cleaners or chemicals near the projector. 
• Do not use aerosols or sprays.WARNING
►Please take right care of the projector according to the 
following. Incorrect care could cause not only an injury but adverse influence 
such as discoloration, peeling paint, etc.
►Do not use cleaners or chemicals other than those specified in this manual.
►Do not polish or wipe with hard objects.CAUTION
Inside of the projector
Caring for the lens
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 with gauze 
or a soft cloth. 
If the projector is extremely dirty, dip soft cloth in water or a neutral cleaner 
diluted in water, and wipe lightly after wringing well. Then, wipe lightly with a 
soft, dry cloth. Incorrect care could have adverse influence such as discoloration, peeling paint, 
etc. Caring for the cabinet and remote control 
						

							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 disappeared around several 
minutes, it will be reappeared every time the power is turned on.
Message Description
There is no input signal. 
Please confirm the signal input connection, and the status 
of the signal source.
The horizontal or vertical frequency of the input signal 
is not within the specified range.
Please confirm the specs for your projector or the signal 
source specs.
An improper signal is input.
Please confirm the specs for your projector or the signal 
source specs.
The internal temperature is rising. 
Please turn the power off, and allow the projector to cool 
down at least 20 minutes. After having confirmed the 
following items, please turn the power ON again. 
 • Is there blockage of the air passage aperture? 
 • Is the air filter dirty? 
 • Does the peripheral temperature exceed 35°C?
If the same indication is displayed after the remedy, please set 
FAN SPEED of the SERVICE item in the OPTION Menu to HIGH.
A note of precaution when cleaning the air filter. 
Please immediately turn the power off, and clean or change 
the air filter referring to the “Air filter” section of this manual 
(
68). After you have cleaned or changed the air filter, 
please be sure to reset the filter timer (
28, 48). 
						

							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 
indicatorLAMP 
indicatorTEMP 
indicatorDescription
Lighting
In 
Orange
Turned
offTurned
offThe projector is in a standby state.
Please refer to the section “Power On/Off”.
Blinking
In 
Green
Turned
offTurned
offThe projector is warming up.
Please wait.
Lighting
In 
Green
Turned
offTurned
offThe projector is in an on state.
Ordinary operations may be performed.
Blinking
In 
Orange
Turned
offTurned
offThe projector is cooling down.
Please wait.
Blinking
In 
Red
(discre-
tionary)(discre-
tionary)
The projector is cooling down. A certain error 
has been detected.
Please wait until the POWER indicator finishes 
blinking, and then perform the proper measure using 
the item descriptions below.
Blinking
In 
Red
or
Lighting
In 
Red
Lighting
In 
Red
Turned
off
The lamp does not light, and there is a 
possibility that interior portion has become 
heated.
Please turn the power off, and allow the projector to 
cool down at least 20 minutes. After the projector has 
sufficiently cooled down, please make confirmation of 
the following items, and then turn the power on again.
• Is there blockage of the air passage aperture?
• Is the air filter dirty?
• Does the peripheral temperature exceed 35°C?
If the same indication is displayed after the remedy, 
please change the lamp referring to the section “Lamp”.
Blinking
In 
Red
or
Lighting
In 
Red
Blinking
In 
Red
Turned
off
The lamp cover has not been properly fixed. 
Please turn the power off, and allow the projector to 
cool down at least 45 minutes. After the projector has 
sufficiently cooled down, please make confirmation 
of the attachment state of the lamp cover. After 
performing any needed maintenance, turn the power 
on again. If the same indication is displayed after 
the remedy, please contact your dealer or service 
company. 
						

							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. NOTE
POWER 
indicatorLAMP 
indicatorTEMP 
indicatorDescription
Blinking
In 
Red
or
Lighting
In 
Red
Turned
offBlinking
In 
Red
The cooling fan is not operating.
Please turn the power off, and allow the projector to 
cool down at least 20 minutes. After the projector has 
sufficiently cooled down, please make confirmation 
that no foreign matter has become caught in the fan, 
etc., and then turn the power on again.
If the same indication is displayed after the remedy, 
please contact your dealer or service company.
Blinking
In 
Red
or
Lighting
In 
Red
Turned
offLighting
In 
Red
There is a possibility that the interior portion 
has become heated.
Please turn the power off, and allow the projector to 
cool down at least 20 minutes. After the projector has 
sufficiently cooled down, please make confirmation of 
the following items, and then turn the power on again.
• Is there blockage of the air passage aperture?
• Is the air filter dirty?
• Does the peripheral temperature exceed 35°C?
If the same indication is displayed after the remedy, 
please set FAN SPEED of the SERVICE item in the 
OPTION Menu to HIGH.
Lighting
In 
Green
Simultaneous
blinking in 
Red
It is time to clean the air filter.
Please immediately turn the power off, and clean or 
change the air filter referring to the section “Air Filter”. 
After cleaning or changing the air filter, please be sure 
to reset the filter timer. After the remedy, reset the 
power to ON.
Lighting
In 
Green
Alternative
blinking in 
Red
There is a possibility that the interior portion 
has become overcooled.
Please use the unit within the usage temperature 
parameters (5°C to 35°C). After the treatment, reset 
the power to ON.
Blinking in 
Green for 
approx. 3 
secondsTurned
offTurned
off
At least 1 “Power ON” schedule is saved to the 
projector.
(Please refer to the User’s Manual (detailed) - Network 
Guide: Schedule Settings for more information.)
Regarding the indicator lamps (continued) 
						

							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, contact your dealer or service company.WARNING
(Continued on next page)
Phenomenon Cases not involving a machine defectReference
page
Power does not 
come on.The electrical power cord is not plugged in.
Correctly connect the power cord.12
The power switch is not set to the on position.
Set the power switch to [ 
| ] (On).17
The main power source has been interrupted during 
operation such as by a power outage (blackout), etc.
Please turn the power off, and allow the projector to cool 
down at least 2 minutes, then turn the power on again.17
Either there is no lamp and/or lamp cover, or either of 
these has not been properly fixed.
Please turn the power off, and allow the projector to cool down 
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.66
Neither sounds
nor pictures are
outputted.The signal cables are not correctly connected.
Correctly connect the connection cables.10
Signal source does not correctly work.
Correctly set up the signal source device by referring to the 
manual of the source device.–
The input changeover settings are mismatched.
Select the input signal, and correct the settings.18, 19
The BLANK function for pictures and the MUTE function 
for sounds are working.
AV mute may be active. Refer to the item “Sound does not come out” and “No 
pictures are displayed” on the next page to turn off the MUTE and BLANK functions.
18, 24
1.Before requesting repair, please check in accordance with the 
following chart.  This operation sometimes resolves your problem. 
If the situation cannot be corrected, 
2.The projector’s microprocessor may need to be reset.  
Please push the Shutdown switch by using a pin or similar and the projector will be turned off immediately.
Before turning it again, wait at least 10 minutes to make the projector cool down enough.
3.Some setting may be wrong. Please use the FACTORY RESET function of the SERVICE item in the 
OPTION Menu (
51) to reset all settings to factory default. 
Then, if the problem is not removed after the remedy, please contact your dealer or service company. 
						

							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 level.
Adjust the volume to a higher level using the menu function 
or the remote control.18
The AUDIO setting is not correct.
Correctly set the items in the AUDIO Menu.41
The audio on your HDMI equipment is not set to Linear PCM.The HDMI input on this projector supports Linear PCM audio 
only. Check the audio setting on your HDMI equipment.11
The audio on the HDMI input is muted.
Change the HDMI AUDIO setting in the AUDIO Menu.41
The digital audio in HDMI signal does not work well.
Use the analogue audio, connecting either an RCA audio 
cable or stereo mini cable.10
No pictures are 
displayed.The lens cover is attached.
Remove the lens cover.3, 17
The signal cables are not correctly connected.
Correctly connect the connection cables.10
The brightness is adjusted to an extremely low level.
Adjust BRIGHTNESS to a higher level using the menu 
function or the remote control.28
The computer cannot detect the projector as a plug and play monitor.Make sure that the computer can detect a plug and play 
monitor using another plug and play monitor.11
The BLANK screen is displayed.
Press the BLANK button on the remote control.24
No pictures 
or disturbed 
pictures are 
displayed on 
HDMI input.The HDMI cable is not correctly connected.
Correctly connect the HDMI cable.10
Your HDMI equipment is not compatible with the projector.
This projector can be connected with another equipment 
that has HDMI or DVI connector, but with some equipment 
the projector may not work properly. 11
Your HDMI equipment and the projector are not harmonized.Turn off the both equipment, and turn on them again–
The signal format on the HDMI is not supported.
Check the video setting on your HDMI equipment.11 
						

							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 to normal.23
Colors have a
faded- out
appearance, 
or
Color tone is 
poor.Color settings are not correctly adjusted.
Perform picture adjustments by changing the COLOR TEMP, 
COLOR, TINT and/or COLOR SPACE settings, using the 
menu functions.28, 30, 
34
COLOR SPACE setting is not suitable.
Change the COLOR SPACE setting to AUTO, RGB, 
SMPTE240, REC709 or REC601. 34
Pictures 
appear dark.The brightness and/or contrast are adjusted to an 
extremely low level.
Adjust BRIGHTNESS and/or CONTRAST settings to a higher 
level using the menu function.28
The WHISPER function is working.
Select NORMAL for the WHISPER item in the SETUP Menu.28, 40
The lamp is approaching the end of its product lifetime.
Replace the lamp.66, 67
Pictures 
appear
blurry.Either the focus and/or horizontal phase settings are not 
properly adjusted.
Adjust the focus using the focus ring, and/or H PHASE using 
the menu function.20, 33
The lens is dirty or misty.
Clean the lens referring to the section “Caring for the lens”.70
Some kind 
of image 
degradation 
such as 
flickering or 
stripes appear 
on the screen.The OVER SCAN ratio is too big.
Adjust OVER SCAN in the IMAGE menu smaller.32
Excessive VIDEO NR.
Change the setting of VIDEO NR in the INPUT menu.34
The FRAME LOCK function cannot work on the current 
input signal.
Set FRAME LOCK in the INPUT menu to OFF.36
Pictures are 
trembling.The exhaust ventilation holes at front is blocked by some 
objects.
Remove any objects from front side of the projector.4
The picture is
distorted or shifted.The shape of picture is not corrected appropriately.
Use the keystone correction or PERFECT FIT function.21, 22 
						

							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 Liquid crystal projector
Liquid Crystal Panel
2,304,000 pixels (1920 horizontal x 1200 vertical)
Lamp275 W UHB
Audio output 4 W x 2
Power supply AC 100-120 V / 
5.0 A, AC 220-240 V / 2.1 A
Power consumption460 W
Temperature range 5 ~ 35 °C (Operating)
Size418 (W) x 139 (H) x 
357 (D) mm
(Not including protruding parts)
* Please refer to the following figure.
Weight (mass)
7.3 kg (approx.)
Ports
RGB1  ..................................................... D-sub 15 pin mini x 1RGB2 G/Y, B/CB/PB, R/CR/PR, H, V ............................. BNC x 5S-VIDEO  ...................................................... mini DIN 4 pin x 1VIDEO  ........................................................................ RCA x 1Y,  CB/PB, CR/PR (component video)  ............................ RCA x 3HDMI  ........................................................................ HDMI x 1AUDIO IN1 ....................................................... Stereo mini x 1AUDIO IN2 ....................................................... Stereo mini x 1AUDIO IN3 R/L  ........................................................... RCA x 1AUDIO IN4 R/L  ........................................................... RCA x 1RGB OUT ............................................... D-sub 15 pin mini x 1AUDIO OUT  ..................................................... Stereo mini x 1USB  ...................................................................... USB (B) x 1REMOTE CONTROL  ....................................... Stereo mini x 1CONTROL  ....................................................... D-sub 9 pin x 1LAN ............................................................................ RJ45 x 1
Optional partsLamp: 
003-120457-01 (DT00873)
Air filter: 003-002119-01 (MU05661)
* For more information, please consult your dealer. 
						

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