Christie Projector LW751i User Manual

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Indicator Status Description
The air filter is clogged or  dirty. (
11 0
)
Check and clean the air filter.
Make sure the power cable is not plugged in, then 
allow the projector to cool sufficiently.
See the section "There is a possibility that the 
interior portion has become heated" (
11 9).
PIN LOCK function is active.
See SECURITY menu > PIN LOCK(103)
If the same indication is displayed after the remedy, 
contact your dealer or service company.
The mechanical shutter is closed.
Press the SHUTTER button on the remote control or 
on the control panel to open the mechanical shutter.
There is a possibility that the interior portion 
has become overcooled.
•  Use the unit within the temperature range.  NORMAL MODE: 0 to 40°C 
ECO MODE: 0 to 45°C
(continued on next page)
Regarding the indicator lamps
Regarding the indicator lamps (continued)
Orange or Red
Yellow
Yellow
Red
Blinking 
alternately Green 
						

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Resetting all settings
When it is difficult to correct wrong settings, the FACTORY RESET function of 
SERVICE item in OPTION menu (
 99) can reset all settings (except settings 
such as LANGUAGE, AUTO BLANK, LAMP HOURS, FILTER HOURS, FILTER 
MESSAGE, STANDBY MODE, COMMUNICATION, SECURITY and NETWORK) 
to the factory default.
• When the interior portion has become overheated, for safety 
purposes, the projector is automatically shut down, and the indicator lamps 
may also be turned off. In such a case, disconnect the power cord, and wait at 
least 45 minutes. After the projector has sufficiently cooled down, confirm the 
attachment state of the lamp and lamp cover, and turn the power on again. NOTE
For the SECURITY indicator, see SECURITY INDICATOR in the SECURITY 
menu (
 107) . 
For the SHUTTER indicator, see the section "Temporarily shading the screen" 
(
 52). 
The FILTER indicator shows the condition of the air filter. Use this feature to keep 
the interior of the projector in good condition.
FILTER indicator Description
Turned off The air filter is clean. 
 
No need to clean up.
Lighting In  OrangeThe air filter is going to be choked. 
 
Clean the filter. See the section "There is a possibility that the 
interior portion has become heated" (
 11 9
).
Lighting In  RedThe air filter is choked. 
 
Turn the power off and clean the air filter immediately. See 
the section "There is a possibility that the interior portion has 
become heated" (
 11 9
).
Regarding the indicator lamps
Regarding the indicator lamps (continued)
• The FILTER indicator might light up in orange or red when something 
blocks the intake vents even though the air filter is clean.
• The FILTER indicator might light up differently from other indicators or display 
messages related to cleaning the air filter. Follow the prompt that is displayed 
earlier. NOTE 
						

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Troubleshooting
Issues that may be easy to be mistaken for machine defects
An issue may be confused with a machine defect, check and deal with it according 
to the following table.
Issue 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.27
The main power source has been interrupted during 
operation such as by a power outage (blackout), etc.
Disconnect the power plug from the power outlet, and 
allow the projector to cool down at least 10 minutes, then 
turn the power on again.
27
Either there is no lamp and/or lamp cover, or either 
of these has not been properly fixed.
Turn the power off and disconnect the power plug from 
the power outlet, and allow the projector to cool down 
at least 45 minutes. After the projector has sufficiently 
cooled down, confirm the attachment state of the lamp 
and lamp cover, and then turn the power on again.
108
Neither sounds 
nor pictures are  output.
The signal cables are not correctly connected.
Correctly connect the connection cables.13 ~ 22
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.38
AV MUTE function is working.
Press AV MUTE button on the remote control.37
(continued on next page) 
						

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Troubleshooting
Issues that may be easy to be mistaken for machine defects (continued)\
Issue Cases not involving a machine defectReference 
page
Sound does not  come out.
The signal cables are not correctly connected.
Correctly connect the audio cables.13 ~ 22
The volume is adjusted to an extremely low level.
Adjust the volume to a higher level using the menu 
function or the remote control.
37, 80
The AUDIO SOURCE/SPEAKER setting is not correct.
Correctly set the AUDIO SOURCE/SPEAKER in AUDIO 
menu.
80
The Sound button (♪) or checkbox is disabled.
If you have selected LAN, remove the checkmark from 
the Sound checkbox in the Option menu of LiveViewer.
–
No pictures are  displayed.
The signal cables are not correctly connected.
Correctly connect the connection cables.13 ~ 22
The brightness is adjusted to an extremely low level.
Adjust BRIGHTNESS to a higher level using the menu 
function.
62
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.
13
The shutter is closed.
Check whether the  SHUTTER indicator is blinking. If it is 
blinking, press  SHUTTER button on the control panel.
52
(continued on next page) 
						

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Issue Cases not involving a machine defectReference 
page
The remote 
control does not  work.
The batteries in the remote control are near the end.
Replace the batteries.28
The ID numbers set in the projector and the remote 
control are different.
Press the ID button with the same ID number as the 
projector, then perform the desired operation. The ID 
number set in the projector can be displayed by pressing 
any of the ID buttons on the remote control for three 
seconds while the lamp is on.
29
Video screen
display freezes.
The FREEZE function is working.
Press FREEZE button to restore the screen to normal.52
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 and/or TINT settings, using the menu functions.62, 64
COLOR SPACE setting is not suitable.
Change the COLOR SPACE setting to AUTO, RGB, 
SMPTE240, REC709 or REC601. 
69
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.
62
The projector is operating in Eco mode.
Set ECO MODE in the LAMP & FILTER menu to NORMAL.75
The lamp is approaching the end of its product 
lifetime.
Replace the lamp.
108
Pictures appear blurry.
The lens cover is attached.
Remove the lens cover.–
Either the focus and/or horizontal phase settings are 
not properly adjusted.
Adjust the focus using the  FOCUS + / - buttons, and/or H 
PHASE using the menu function.
41, 68
(continued on next page)
Troubleshooting
Issues that may be easy to be mistaken for machine defects (continued)\
 
						

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Issue Cases not involving a machine defectReference 
page
Pictures 
appear blurry.  (continued)The lens is dirty or misty.
Clean the lens referring to the section  Caring for the lens.11 3
Some kind  of image 
degradation  such as 
flickering or 
stripes appear  on screen. 
When the projector is operating in Eco mode, 
flickering may appear on screen.
Set ECO MODE in the LAMP & FILTER menu to NORMAL.
75
The OVER SCAN ratio is too big.
Adjust OVER SCAN in the SIZE AND POSITION menu 
smaller.
67
Excessive VIDEO NR.
Change the setting of VIDEO NR in the INPUT menu.69
The FRAME LOCK function cannot work on the 
current input signal.
Set FRAME LOCK in the INPUT menu to OFF.
71
RS-232C does  not work.
The POWER SAVE function is working.
Select NORMAL for STANDBY MODE item in the 
SETUP menu.
78
The COMMUNICATION TYPE for the CONTROL port 
is set to NETWORK BRIDGE.
Select OFF for COMMUNICATION TYPE item in the 
OPTION - SERVICE - COMMUNICATION menu.
96
Network does  not work.
The POWER SAVE function is working.
Select NORMAL for STANDBY MODE item in the 
SETUP menu.
78
The same network address is set for both wireless 
and wired LAN.
Change the network address setting for wireless or wired 
LAN.
–
(continued on next page)
Troubleshooting
Issues that may be easy to be mistaken for machine defects (continued)\
 
						

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Issue Cases not involving a machine defectReference 
page
The IR and 
RS-232C does  not work on 
HDBaseT
TM 
connection.
The POWER SAVE function is working.
Select NORMAL for STANDBY MODE item in the 
SETUP menu.
78
HDBaseT 
connection 
does not work.
The POWER SAVE function is working.
Select NORMAL for STANDBY MODE item in the 
SETUP menu.
78
The connected equipment may not be supported by 
HDBaseT.
Refer to User's manual (detailed) for connection.
14
IR and LAN 
does not work  via HDBaseT.
Check if the IR setting is OFF under HDBaseT.
EASY MENU > ADVANCED MENU > OPTION >  
SERVICE 
> REMOTE RECEIV.
95
Check if the LAN setting is HDBaseT.
EASY MENU > ADVANCED MENU > NETWORK > 
WIRED NETWORK
–
LAN does not 
work, if LAN is  connected to the projector while having 
an input signal 
from HDBaseT.
Check if the LAN setting is HDBaseT.
EASY MENU > ADVANCED MENU > NETWORK > 
WIRED NETWORK
–
This projector is compatible with 100BASE-T only .
Check the specification of the connected equipments.–
If the LAN cable is connected with the hub, try to change 
the connected port at the hub–
If the LAN cable is connected directly to the computer, 
try to connect to other computer–
No image is 
displayed via  HDBaseT.
Check the LAN cable if it is CAT5e certified or higher.–
Try to change the LAN cable.–
If the LAN cable is connected with more than three 
extension connector, the transmission of 100 meters 
may fail.
–
Check if the extension connector is compatible with 
CAT5e.
All LAN cable and extension connector connected with 
HDBaseT port must be CAT5e certified. 
–
(continued on next page)
Troubleshooting
Issues that may be easy to be mistaken for machine defects (continued)\
 
						

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Troubleshooting
Issue Cases not involving a machine defectReference 
page
No image is 
displayed via  SDI. 
(LWU701i only).
Check if it is connected with a cable of 5CFB or greater, 
or Belden 1694A or greater.–
Check if a cable with a length of 100m or less is used.–
Try to change the cable.–
Check if a supported signal format is input.–
No image is 
displayed via  DIsplayPort.
Check if DisplayPort cables conforming to the 
DisplayPort standard is used for connection.–
When the projector is connected to the computer with 
an early type of chipset or graphics card that supports 
the DisplayPort, the projector and/or computer may not 
operate normally.
–
The problem may be solved by upgrading the driver of 
graphic accelerator of the computer to the latest version.–
Turn off the projector and the external device, and turn 
on again.–
Check if the supported signal format is input.–
NETWORK  BRIDGE 
function does  not work.
The NETWORK BRIDGE function is turned off.
Select NETWORK BRIDGE for COMMUNICATION TYPE 
item in the OPTION - SERVICE - COMMUNICATION 
menu.
96
Schedule 
function does  not work.
The POWER SAVE function is working.
Select NORMAL for STANDBY MODE item in the 
SETUP menu.
78
The internal clock has been reset.
Once you turn off the projector in the POWER SAVE 
mode or the AC power, the current date and time setting 
is reset.
Check the DATE AND TIME setting for WIRELESS 
SETUP or WIRED SETUP in the NETWORK menu.
–
(continued on next page)
Issues that may be easy to be mistaken for machine defects (continued)\
 
						

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• 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
Issue Cases not involving a machine defectReference 
page
When the 
projector is 
connected to 
the network, it 
powers off and 
on as described  below.
Powers off
POWER 
indicator blinks 
in orange a few  times
Goes into  
standby mode
Disconnect the LAN cable and check that the 
projector is working properly.
If this issue occurs after connecting to the network, there 
may be a loop between two Ethernet switching hubs 
within the network.
-  Two or more Ethernet switching hubs are in a network.
- Two of the hubs are doubly connected by LAN cables.
-  This double connection forms a loop between the two  hubs.
Such a loop may have an adverse effect on the projector 
as well as the other network devices.
Check the network connection and remove the loop by 
disconnecting the LAN cables such that there is only one 
connecting cable between two hubs.
–
Troubleshooting
Issues that may be easy to be mistaken for machine defects (continued)\
 
						

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Specifications
Specifications
See the Specifications in the Setup Guide  which is a book.
End User License Agreement for the Projector Software
• Software in the projector consists of the plural number of independent software 
modules and there exist our copyright or/and third party copyrights for each of 
such software modules.
• Read “End User License Agreement for the Projector Software” which is 
separated document.