Optoma Ep781 Projector User Manual

							
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3
Appendices

MessagePower-LEDTemp-LEDLamp-LED(Green)(Red)
Standby State (Input power cord)
WarmingFlashing
Normal Mode
CoolingFlashing
Error (Lamp failed)
Error (Fan failed)Flashing
Error (Over Temp.)
 
Make sure the projection screen is between distance 3.3 to 40.0 feet 
(1.0 to 12.2 meters) from the projector. (See page 17)
Problem: The image is stretched when displaying 16:9 DVDThe projector automatically detects 16:9 DVD and adjusts the aspect ratio by digitizing to full screen with 4:3 default setting.
If the image is still stretched, you will also need to adjust the aspect\
 ratio by referring to the following:
 Please select 4:3 aspect ratio type on your DVD player if you are playing a 16:9 DVD.
 If you can’t select 4:3 aspect ratio type on your DVD player, please \
select 4:3 aspect ratio in the on screen menu.
Problem: Image is reversed
 Select “ManagementProjection” from the OSD and adjust the 
projection direction.  (See page 30)
Problem: Lamp burns out or makes a popping sound
 When the lamp reaches its end of life, it will burn out and may 
make a loud popping sound.  If this happens, the projector will 
not turn on until the lamp module has been replaced. To replace 
the lamp, follow the procedures in the “Replacing the Lamp”. (See\
 
page 41)
Problem: LED lighting message
Steady light   No light    
						

							
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Problem: Message Reminders
 Fan fail: 
 
 Over temperature: 
 
 Power Off:  
 
  Replace the lamp:  
 
            
						

							
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Replacing the Lamp
The projector keeps track of the lamp usage.  It will show you a 
warning message:
When you see this message, change the lamp as soon as pos-
sible. Make sure the projector has cooled down for at least 30 
minutes before changing the lamp. 
Warning: Lamp compartment is hot! Allow 30 minutes to cool down before changing lamp!
Warning: To reduce the risk of personal injury, do not drop the lamp module or touch the lamp bulb. The bulb may shatter and cause injury if it is dropped.
Lamp Replacement Procedure:
1. Turn off the power by pressing the Power/Standby button.
2.  Allow the projector to cool down for at least 30 minutes.
3.  Disconnect the power cord.
4.  Push up and remove the cover.

5.  Use a screwdriver to remove the 3 screws from the lamp 
module.
6.  Pull out the lamp module.

To replace the lamp module, reverse the previous steps.
2
3
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Remark :  “*”compressed computer image.
Compatibility Modes
ModeResolution(ANALOG)(DIGITAL)
V.Frequency(Hz) H.Frequency(kHz) V.Frequency(Hz) H.Frequency(kHz) 
VESA VGA640 x 3507031.57031.5
VESA VGA640 x 3508537.98537.9
VESA VGA640 x 4008537.98537.9
VESA VGA640 x 4806031.56031.5
VESA VGA640 x 4807237.97237.9
VESA VGA640 x 4807537.57537.5
VESA VGA640 x 4808543.38543.3
VESA VGA720 x 4007031.57031.5
VESA VGA720 x 4008537.98537.9
VESA SVGA800 x 6005635.25635.2
VESA SVGA800 x 6006037.96037.9
VESA SVGA800 x 6007248.17248.1
VESA SVGA800 x 6007546.97546.9
VESA SVGA800 x 6008553.78553.7
VESA XGA1024 x 7686048.46048.4
VESA XGA1024 x 7687056.57056.5
VESA XGA1024 x 7687560.07560.0
VESA XGA1024 x 7688568.78568.7
* VESA SXGA1152 x  8647063.87063.8
* VESA SXGA1152 x  8647567.57567.5
* VESA SXGA1152 x  8648577.18577.1
* VESA SXGA1280 x 10246063.986063.98
* VESA SXGA1280 x 10247579.987579.98
* VESA SXGA1280 x 10248591.18591.1
* VESA SXGA+1400 x 10506063.986063.98
* VESA UXGA1600 x 120060756075
ModeResolution(ANALOG)(DIGITAL)
V.Frequency(Hz) H.Frequency(kHz) V.Frequency(Hz) H.Frequency(kHz) 
MAC LC 13”640 x 48066.6634.98******
MAC II 13”640 x 48066.6835******
MAC 16”832 x 62474.5549.725******
MAC 19”1024 x 7687560.24******
 * MAC1152 x 87075.0668.68******
MAC G4640 x 4806031.35******
 i MAC DV1024 x 7687560******
*  i MAC DV1152 x 8707568.49******
*  i MAC DV1280 x 9606060******   
						

							
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VGA-In Connector
RS232 Commands
Pin no.NameI/O (From Projec-tor Side
1TXDOUT
2RXDIN
3GND__
Pin no.Spec.
1R(RED)/Cr
2G(GREEN)/Y
3B(BLUE)/Cb
4NC
5GND
6GND
7GND
8GND
9DDC 5V
10HOT_DET
11NC
12DDC Date
13HS/CS
14VS
15DDC Clock
12345
678910
1112131415
12
3
RS232 Connector            
						

							
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Please note that damage resulting from incorrect installation will invalidate the warranty.
Ceiling Mount Installation
1. To prevent damaging your projector, please use the ceiling 
mount package for installation.
2.  If you wish to use a third party ceiling mount kit, please 
ensure the screws used to attached a mount to the projector 
meet the following specifications:
 Screw type: M3
 Maximum screw length: 10mm
 Minimum screw length: 8mm
Warning: 1. If you buy the ceiling mount from another manufacturer, please ensure that there is at least 10cm distance between the bottom cover of the projector and the ceiling.2. Avoid placing the projector near sources of heat such as air-conditioning units and heaters otherwise it may overheat and shut down automatically.
126.0063.00
111.00
40.00
66.00(To Lens Center)
83.75
396.60(Min.)/596.60(Max.)   
						

							
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Optoma Global Offices
For	service	or	support	please	contact	your	local	office.
USA
715 Sycamore Drive  Tel : 408-383-3700
Milpitas, CA 95035, USA   Fax: 408-383-3702 
www.optomausa.com  Service : 
[email protected]
Canada
5630 Kennedy Road, 
Mississauga, ON, L4Z 2A9, Canada
Tel : 905-882-4228 Fax: 905-882-4229
www.optoma.com
Europe
42 Caxton Way, The Watford Business Park 
Watford, Hertfordshire, WD18 8QZ, UK 
Tel : +44 (0) 1923 691 800 Fax: +44 (0) 1923 691 888
www.optomaeurope.com
Service Tel : +44 (0)1923 691865 Service : 
[email protected]
Taiwan
5F., No. 108, Minchiuan Rd.  Tel : +886-2-2218-2360
Shindian City, Taipei Taiwan 231,   Fax: +886-2-2218-2313
R.O.C.  www.optoma.com.tw
Service : [email protected] asia.optoma.com
Hong Kong
Rm. 2507, 25/F., China United Plaza,
No. 1008 Tai Nan West St., Kowloon, H.K.
Tel : +852-2396-8968  Fax: +852-2370-1222
www.optoma.com.hk
China
5F, No. 1205, Kaixuan Rd.,  Tel : +86-21-62947376
Changning District   Fax: +86-21-62947375
Shanghai, 200052, China  www.optoma.com.cn
Latin America
715 Sycamore Drive  Tel : 408-383-3700
Milpitas, CA 95035, USA  Fax: 408-383-3702
www.optoma.com.br  www.optoma.com.mx