Dukane Imagepro 8755h Projector Users Manual

							5
ItemDescription
SECURITY (continued)
5. Using the MY TEXT PASSWORD function
This item allows you to display your own message (MY TEXT) on the START 
UP screen and INPUT-INFORMATION. It can be protected by a password to 
prevent it from being overwritten.
5.1 Writing the MY TEXT
(1)   Use the ▲/▼ buttons on the SECURITY menu 
to select the MY TEXT WRITING menu and 
press the ► button. The MY TEXT WRITING 
dialog will be displayed.
(2) 
 The current MY TEXT will be displayed on the first 3 
lines. If not yet written, the lines will be blank.
Use the 
▲/▼/◄/► buttons and the ENTER or INPUT button to select and enter 
characters. The RESET button can be used to erase 1 character at a time. Also if 
you move the cursor to DELETE or ALL CLEAR on screen and push the  ENTER 
or INPUT button, 1 character or all characters will be erased. The MY TEXT can 
be input up to 24 characters on each line.
(3)    To change an already inserted character, press 
the ▲/▼ button to move the cursor to one of 
the first 3 lines, and use the ◄/► buttons to 
move the cursor on the character to be changed. 
After pressing the ENTER or INPUT button, the 
character is selected. Then, follow the same 
procedure as described at the item (2) above.
(4)    T

o finish entering text, move the cursor to the 
SAVE on screen and press the  ENTER or INPUT  
button. To revert to the previous MY TEXT 
without saving changes, move the cursor to the 
CANCEL on screen and press the  ENTER or 
INPUT button.
• The MY TEXT WRITING function is available only when the MY TEXT 
PASSWORD function is set to TURN OFF.
5.2 Displaying the MY TEXT
(1)   Use the ▲/▼ buttons on the SECURITY menu 
to select the MY TEXT DISPLAY menu and 
press the ► button to display the MY TEXT 
DISPLAY on/off menu.
(2) 

  Use the ▲/▼ buttons on the MY TEXT DISPLAY 
on/off menu to select on or off.
TURN ON  ó TURN OFF
When it is set TURN ON, the MY TEXT will be 
displayed on the START UP screen. Whichever 
is selected, the MY TEXT will be displayed on the 
INPUT-INFORMATION- when the INFORMATION 
on the SERVICE menu is chosen.
• This function is available only when the MY TEXT 
PASSWORD function is set to the TURN OFF.
MY TEXT DISPLAY on/off 
menu
OPTION menu
OPTION menu (continued)
(continued on next page) 
						

							5
ItemDescription
SECURITY (continued) 5.3 Turning on the MY TEXT PASSWORD
The MY TEXT PASSWORD function can prevent the MY TEXT from being overwritten.
5.3-1 
 
Turning on the MY TEXT PASSWORD function
(1)   Use the ▲/▼ buttons on the SECURITY menu 
to select the MY TEXT PASSWORD menu and 
press the ► button to display the MY TEXT 
PASSWORD on/off menu.
5.3-2 
   Setting the MY TEXT PASSWORD
(1)   Display the MY TEXT PASSWORD on/off menu 
using the procedure in 5.3-1
(2) 

  Use the ▲/▼ buttons on the MY TEXT 
PASSWORD menu to select TURN ON. The 
ENTER PASSWORD BOX (small) will be 
displayed.
(3) 

  Use the ▲/▼/◄/► buttons to enter the 
PASSWORD. Move the cursor to the right side of 
the ENTER PASSWORD BOX (small) and press 
the ► button to display the PASSWORD AGAIN 
BOX, and then enter the same PASSWORD 
again.
(4) 

  Move the cursor to the right side of the 
PASSWORD AGAIN BOX and press ► button to 
display the PASSWORD for about 20 seconds, 
then please make note of the PASSWORD 
during this time.
Pressing the ENTER button on the remote control 
or INPUT button on the projector will return to the 
MY TEXT PASSWORD on/off menu. When the 
PASSWORD is set for the MY TEXT;
• The MY TEXT DISPLAY menu will be unavailable, which can prohibit 
changing the DISPLAY setting.
• The MY TEXT WRITING menu will be unavailable, which can prevent the 
MY TEXT from being overwritten.
5.3-3    T

urning the MY TEXT PASSWORD off
(1)   Follow the procedure in 5.3-1 to display the MY 
TEXT PASSWORD on/off menu.
(2) 

  Select TURN OFF to display the ENTER 
PASSWORD BOX (large). Enter the registered 
PASSWORD and the screen will return to the 
MY TEXT PASSWORD on/off menu. 
If an incorrect PASSWORD is input, the menu will close. If necessary, repeat 
the process from 5.3-3(1)
5.3.4 If you have forgotten your PASSWORD.
(1) 

  Follow the procedure in 5.3-1 to display the MY TEXT PASSWORD 
on/off menu.
(2) 

  Select TURN OFF to display the ENTER PASSWORD BOX (large). The 
10 digit inquiring code will be displayed inside the box. 
(3) 

  Contact your dealer with the 10 digit inquiring code. Your PASSWORD 
will be sent after your user registration information is confirmed.
ENTER PASSWORD BOX  (large)
ENTER PASSWORD BOX 
(small)
PASSWORD AGAIN BOX 
NOTE PASSWORD BOX  MY TEXT PASSWORD
OPTION menu
OPTION menu (continued) 
						

							53
C .C  . (Closed Caption) menu
The closed caption setting can be changed through C.C. 
menu in the advance menu. Please select the item that you 
will change using ▲/▼ cursor buttons.
• The C.C. (Closed Caption) is the function that displays a 
transcript or dialog of the audio portion of a video, files or 
other presentation or other relevant sounds. It is required to 
have NTSC format video or 525i (480i) format component 
video source supporting C.C. feature to utilize this function.
C.C. (Closed Caption) menu
Item Description
DISPLAY Select Closed Caption DISPLAY setting from 
following options using ▲/▼buttons. 
TURN OFF  ó TURN ON 
ó AUTO 
        
TURN OFF:  Closed Caption is OFF
TURN ON:  Closed Caption is ON
AUTO:       Closed Caption automatically displays when the 
volume is muted.
• The caption is not displayed when the OSD menu is active.
• The Closed Caption is the function to display the dialogue, 
narration, and / or sound effects of a television program or other 
video sources. The Closed Caption availability is depending upon 
broadcaster and/or content.
• It may not work properly, depending on equipment or signal 
source. In this case, please turn off the Closed Caption.
MODE Select Closed Caption MODE setting from 
following options using ▲/▼buttons. 
CAPTIONS  ó TEXT
CAPTIONS:  Display Closed Caption
TEXT
 :   Display Text data, which is for additional information 
such as news reports or a TV program guide. The 
information covers the entire screen. Not all of the C.C. 
program has Text information.
CHANNEL Select Closed Caption CHANNEL from following options using 
▲/▼buttons. 
1 ó  2 
ó 3 
ó 4
1: Channel 1, primary channel / language
2: Channel 2
3: Channel 3
4: Channel 4
The channel data may vary, depending on the content. Some 
channel might be used for secondary language or empty. 
						

							54
Maintenance 
Maintenance
A lamp has finite product life. Using the lamp for long periods of time could cause 
the pictures darker or the color tone poor. Note that each lamp has a different 
lifetime, and some may burst or burn out soon after you start using them. 
Preparation of a new lamp and early replacement are recommended.  To prepare 
a new lamp, contact to your dealer and tell the lamp type number .
Replacing the lamp
Type number : 456-8755H
1.Turn the projector off, and unplug the power cord. 
Allow the projector to cool for at least 45 minutes.
2.Prepare a new lamp. If the projector is mounted on 
a ceiling, or if the lamp has broken, also ask the 
dealer to replace the lamp.
3.Loosen the screw (marked by arrow) of the lamp cover 
and then slide the lamp cover to the side to remove it.
4.Loosen the 2 screws (marked by arrow) of the 
lamp, and slowly pick up the lamp by the handles.
5.Insert the new lamp, and retighten firmly the 
2 screws of the lamp that are loosened in the 
previous process to lock it in place.
6.Slide the lamp cover back in place and firmly 
fasten the screw of the lamp cover.
7.Turn the projector on and reset the lamp time using 
the LAMP TIME item in the OPTION menu.
(1) Press the MENU button to display a menu. 
(2) 
 Point at the Go to Advanced Menu … in the menu 
using the ▼/▲ button, then press the ► button.
(3)  Point at the OPTION in the left column of the menu 
using the ▼/▲button, then press the ► button.
In case of replacement by yourself, follow the following procedure. Replacing the lamp
Handles
(4)  Point at the LAMP TIME using the ▼/▲ button, then press the ► button. A dialog will appear.
(5)  Press the ▲ button to select RESET on the dialog. It performs resetting the lamp time.
•  Please reset the lamp time only when you have replaced the lamp, 
for a suitable indication about the lamp. NOTE
lamp cover
►Do not touch any inner space of the projector, while the lamp 
is taken out. CAUTION 
						

							55
Maintenance
Lamp warning
Replacing the lamp (continued)
 HIGH VOLTAGE  HIGH TEMPERATURE HIGH PRESSURE
►The projector uses a high-pressure mercury glass lamp. The 
lamp can break with a loud bang, or burn out, if jolted or scratched, handled 
while hot, or worn over time. Note that each lamp has a different lifetime, and 
some may burst or burn out soon after you start using them. In addition, when 
the bulb bursts, it is possible for shards of glass to fly into the lamp housing, and 
for gas containing mercury to escape from the projector’s vent holes.
►About disposal of a lamp:  This product contains a mercury lamp; do not put 
it in a trash. Dispose of it in accordance with environmental laws.
• For lamp recycling, go to www.lamprecycle.org (in the US).
• For product disposal, contact your local government agency  
or www.eiae.org (in the US) or www.epsc.ca (in Canada).
For more information, call your dealer. WARNING
•  If  the  lamp  should  break  (it  will  make  a  loud  bang  when  it  does), 
unplug  the  power  cord  from  the  outlet,  and  make  sure  to  request  a 
replacement  lamp  from  your  local  dealer.  Note  that  shards  of  glass 
could damage the projector’s internals, or cause injury during handling, 
so please do not try to clean the projector or replace the lamp yourself.
•  If  the  lamp  should  break  (it  will  make  a  loud  bang  when  it  does), 
ventilate  the  room  well,  and  make  sure  not  to  breathe  the  gas  that 
comes out of the projector vents, or get it in your eyes or mouth.
• Before replacing the lamp, turn the projector off and unplug the power 
cord,  then  wait  at  least  45  minutes  for  the  lamp  to  cool  sufficiently. 
Handling the lamp while hot can cause burns, as well as damaging the lamp.
• Never unscrew except the appointed (marked by an arrow) screws.
•  Do  not  open  the  lamp  cover  while  the  projector  is  suspended  from 
a  ceiling.  This  is  dangerous,  since  if  the  lamp’s  bulb  has  broken,  the 
shards  will  fall  out  when  the  cover  is  opened.  In  addition,  working  in 
high  places  is  dangerous,  so  ask  your  local  dealer  to  have  the  lamp 
replaced even if the bulb is not broken.
•  Do  not  use  the  projector  with  the  lamp  cover  removed. At  the  lamp 
replacing,  make  sure  that  the  screws  are  screwed  in  firmly.  Loose 
screws could result in damage or injury.
• Use only the lamp of the specified type.
•  If  the  lamp  breaks  soon  after  the  first  time  it  is  used,  it  is  possible 
that  there  are  electrical  problems  elsewhere  besides  the  lamp.  If  this 
happens, contact to your local dealer or a service representative.
• 
Handle with care: jolting or scratching could cause the lamp bulb to bur
st during use.• Using the lamp for long periods of time, could cause it dark, not to light 
up or to burst. When the pictures appear dark, or when the color tone is 
poor, please replace the lamp as soon as possible. Do not use old (used) 
lamps; this is a cause of breakage. 
Disconnect 
the plug 
from the  power outlet 
						

							56
Maintenance
The air filter unit of this projector consists of a filter cover, two kinds of filters, and 
a filter frame. The new double large filters system is expected to function longer. 
However, please check and clean it periodically to keep ventilation needed for 
normal operation of the projector.
When the indicators or a message prompts you to clean the air filter, comply with 
it as soon as possible. Replace the filters when they are damaged or too soiled. 
To prepare new filters, contact to your dealer and tell the following type number.
Cleaning and replacing the air filter
Type number : MU05611
1.Turn the projector off, and unplug the power cord. 
Allow the projector to sufficiently cool down.
2.Use a vacuum cleaner on and around the filter cover.
3.Pull the filter cover knobs while lifting it, to take the 
filter unit off. 
4.Use a vacuum cleaner for the filter vent of the 
projector and both sides of the filter unit.
5.Pull the filter frame’s knob up while holding the filter 
cover to remove the filter frame, then take the filters 
out.
6.Set new filters where former filters were. Put the larger 
meshed filter into a filter cover first. Then put the finer 
meshed filter on the larger meshed one.
7.Put the filter frame back where it was.
8.Put the filter unit back into the projector.
When you replace the lamp, please replace the air filter. An air filter of specified 
type will come together with a replacement lamp for this projector
.
Filter cover
Filter cover knobs
Filter unit
 Filter coverFilter frame
(continued on next page)
If the filters are damaged or too soiled, replace them 
according to the following procedure number 5 to 7. 
Otherwise, please jump to the procedure number 8.
Filter (finer meshed)
Filter (larger meshed) 
						

							57
Maintenance
Cleaning and replacing the air filter (continued)
9.Turn the projector on and reset the filter time using the FILTER TIME item in 
the EASY MENU.
►Before taking care of the air filter, make sure the power switch 
is off and the power cable is not plugged in, then allow the projector to cool 
sufficiently. Taking care of the air filter in a high temperature state of the projector 
could cause an electric shock, a burn or malfunction to the projector .
►Use only the air filter of the specified type. Do not use the projector without the 
air filter or the filter cover. It could result in a fire or malfunction to the projector.
►Clean the air filter periodically. If the air filter becomes clogged by dust or the 
like, internal temperatures rise and could cause a fire, a burn or malfunction to 
the projector. WARNING
• Please replace the air filter when it is damaged or too soiled.
• When you replace the projection lamp, please replace the air filter . 
 An air filter 
of specified type will come together with a replacement lamp for this projector .
• Please reset the filter time only when you have cleaned or replaced the air 
filter, for a suitable indication about the air filter.
• The projector may display the message such as “CHECK THE AIR FLOW” or 
turn off the projector, to prevent the internal heat level rising. NOTE (1) Press the MENU button to display a menu. 
(2) 

  Point at the FILTER TIME using the ▼/▲ button, then press the ► button. 
A dialog will appear.
(3) 

  Press the ▲ button to select RESET on the dialog. It performs resetting 
the filter time. 
						

							58
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 cord 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 
						

							59
Troubleshooting
Troubleshooting
If an abnormal operation should occur, stop using the projector immediately.
Otherwise if a problem occurs with the projector, the following checks and measures are 
recommended before requesting repair. 
If this does not resolve the problem, please contact your dealer or service company. 
 They 
will tell you what warranty condition is applied.
►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 to your dealer or service company .WARNING
Related messages
When some message appears, check and cope with it according to the following table. 
Although these messages will be automatically disappeared around several minutes, it will 
be reappeared every time the power is turned on.
MessageDescription
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 “Cleaning and replacing the 
air filter” section of this manual. After you have cleaned or 
changed the air filter, please be sure to reset the filter timer 
(
56). 
						

							60
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 “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.
BlinkingIn 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.
(Continued on next page)