Dukane Projector 8934A User Manual

							81
Troubleshooting
Regarding the indicator lamps
When operation of the LAMP, TEMP and POWER indicators differs from usual, 
check and cope with it according to the following table.
POWER 
indicator LAMP 
indicator TEMP 
indicator Description
Lighting
In Orange Turned
off Turned
off
The projector is in a standby state.Please refer to the section “Power on/off”.
Blinking
In Green Turned
off Turned
off
The projector is warming up.Please wait.
Lighting
In Green Turned
off Turned
off
The projector is in an on state.Ordinary operations may be performed.
Blinking
In Orange Turned
off Turned
off
The 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 
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 
Replacing the 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.
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							82
Troubleshooting
Regarding the indicator lamps (continued)
POWER 
indicator LAMP 
indicator TEMP 
indicator Description
Blinking In Red or
Lighting In Red Turned
off Blinking
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
off Lighting
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 projector is used at an altitude of about 1600 m 
(5250 feet) or higher, set ALTITUDE of the SERVICE 
item in the OPTION menu to HIGH  (
63). If the 
projector is used with a wrong setting, it may cause 
damage to the projector itself or the parts inside.
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  Cleaning 
and replacing the 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.
(continued on next page) 
						

							83
• 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, please make 
confirmation of the attachment state of the lamp and lamp cover, and then turn 
the power on again. 
If the projector is used at an altitude of about 1600 m (5250 feet) 
or higher, set ALTITUDE of the SERVICE item in the OPTION menu to HIGH  (
63). 
Otherwise, set it to NORMAL. NOTE
Troubleshooting
POWER 
indicator LAMP 
indicator TEMP 
indicator Description
Blinking In  Green for approx. 3  seconds. Turned
off Turned
off At least 1 Power ON schedule is saved to the 
projector.
Please refer to Schedule Settings in the Network 
Guide.
Regarding the indicator lamps (continued) 
						

							84
Troubleshooting
Resetting all settings
When it is hard to correct some wrong settings, the FACTORY RESET function of 
SERVICE item in OPTION menu (
67) can reset all settings (except settings such 
as AUTO BLANK, STANDBY MODE, LANGUAGE, LAMP TIME, FILTER TIME, 
FILTER MESSAGE, SECURITY and NETWORK) to the factory default. Be sure to 
set ALTITUDE after resetting all the settings (
 63).
Phenomena that may be easy to be mistaken for machine defects
About the phenomenon confused with a machine defect, check and cope with it 
according to the following table.
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.
15
The main power source has been interrupted during 
operation such as by a power outage (blackout), etc.
Please 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.
15
Either there is no lamp and/or lamp cover, or either 
of these has not been properly fixed.
Please 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, please make confirmation of 
the attachment state of the lamp and lamp cover, and 
then turn the power on again.
74
Neither soundsnor pictures areoutputted.
The signal cables are not correctly connected.
Correctly connect the connection cables.
12 ~ 14
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.23, 24
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.
22, 31
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							85
Troubleshooting
Phenomena that may be easy to be mistaken for machine defects (continue\
d)
PhenomenonCases not involving a machine defectReference 
page
Sound does 
not come out. The signal cables are not correctly connected.
Correctly connect the audio cables.
12 ~ 14
The MUTE function is working.
Restore the sound pressing 
MUTE or VOLUME +/- 
button on the remote control.
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.
22, 50
The AUDIO SOURCE/SPEAKER setting is not correct.
Correctly set the AUDIO SOURCE/SPEAKER in AUDIO menu.50
No pictures are  displayed. The signal cables are not correctly connected.
Correctly connect the connection cables.
12 ~ 14
The brightness is adjusted to an extremely low level.
Adjust BRIGHTNESS to a higher level using the menu function.36
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 BLANK
 button on the remote control.31
COMPUTER IN2 is set to MONITOR OUT.
Set COMPUTER IN2 to AUTO or SYNC ON G OFF.44
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							86
PhenomenonCases not involving a machine defectReference 
page
Video screen  display 
freezes. The FREEZE function is working.
Press FREEZE button to restore the screen to normal.31
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.37, 42
COLOR SPACE setting is not suitable.
Change the COLOR SPACE setting to AUTO, RGB, 
SMPTE240, REC709 or REC601. 
42
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.
36
The projector is operating in Eco mode.
Set ECO MODE to OFF, and set AUTO ECO MODE to 
OFF, in the SETUP menu.47
The lamp is approaching the end of its product 
lifetime.
Replace the lamp.
74, 75
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.
26, 41
The lens is dirty or misty.
Clean the lens referring to the section 
Caring for the 
lens.
78
(continued on next page)
Troubleshooting
Phenomena that may be easy to be mistaken for machine defects (continue\
d) 
						

							87
PhenomenonCases not involving a machine defectReference 
page
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 to OFF, and set AUTO ECO MODE to 
OFF, in the SETUP menu.
47
The OVER SCAN ratio is too big.
Adjust OVER SCAN in the IMAGE menu smaller.40
Excessive VIDEO NR.
Change the setting of VIDEO NR in the INPUT menu.42
The FRAME LOCK function cannot work on the 
current input signal.
Set FRAME LOCK in the INPUT menu to OFF.
44
RS-232C does 
not work. The SAVING function is working.
Select NORMAL for STANDBY MODE item in the SETUP 
menu.
49
The COMMUNICATION TYPE for the CONTROL port 
is set to NETWORK BRIDGE.
Select OFF for COMMUNICATION TYPE item in the 
OPTION - SERVICE - COMMUNICATION menu.
65
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.65
Network does 
not work The SAVING function is working.
Select NORMAL for STANDBY MODE item in the SETUP 
menu.49
(continued on next page)
Troubleshooting
Phenomena that may be easy to be mistaken for machine defects (continue\
d) 
						

							88
• 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
Troubleshooting
Phenomena that may be easy to be mistaken for machine defects (continue\
d)
Phenomenon Cases not involving a machine defectReference 
page
Schedule 
function does  not work The SAVING function is working.
Select NORMAL for STANDBY MODE item in the SETUP 
menu.
49
The internal clock has been reset.
Once you turn off the projector in the SAVING mode or the 
AC power, the current date and time setting is reset. 
Check the DATE AND TIME setting for SETUP in the 
NETWORK menu.  
–
When the 
projector is 
connected to  wired LAN, 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 phenomenon occurs after connecting to the network, 
there may be a loop between two Ethernet switching hubs 
within the network, as explained below.
- There are two or more Ethernet switching hubs 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.
– 
						

							89
Specifications
Specifications
Please see the Specifications in the User’s Manual (concise) 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.
• Be sure to read “End User License Agreement for the Projector Software” which 
is separated document.
430-8933WB-8934A-General-00
See Dukane Web site for manuals.
DUKANE CORP AV SERVICE DEPT 
2900 Dukane Drive
St Charles, IL 60174
800-676-2487 / 630-762-4032 
Fax  630-584-5156
[email protected]  
www.dukaneav.com