Optoma Tx770 Projector User Manual

31... English

6.  Click on “Show all devices”. Then select “Standard monitor 
types” under the “Manufacturers” box ; choose the resolution 
mode you need under the “Models” box.
7.  Verify that the resolution setting of the monitor display is less 
than or equal to 1024 x 768.
 If you are using a Notebook PC:
1.  You are required to implement the above steps of resolution 
setting of the computer first.
2.  Switch the Notebook PC display to the “external display only” 
or “CRT only” mode. 
 If you...

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Problem: The image is stretched when displaying 16:9 DVD.
The 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 cannot select 4:3 aspect ratio type on your DVD player, 
please select 4:3 aspect ratio in the...

33... English

Problem: Message Reminders
 “Lamp is approaching the end of its useful life in full power opera-
tion. Replacement Suggested!” will be shown about 10 seconds, 
when lamp is nearing end of life.
 “Projector Overheated. Lamp will automatically turn off soon.” 
will be shown when the system temperature is too high.
 “Fan failure. Lamp will automatically turn off soon.” will be shown 
when the fan is out of order.
Appendices 

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Replacing the lamp
  The projector will detect the lamp life itself.  It will show you 
a warning message “Lamp is approaching the end of its useful 
life in full power operation. Replacement Suggested!” When 
you see this message, changing the lamp as soon as possible.  
  Make sure the projector has been cooled down for at least 30 
minutes before changing the lamp. 
Warning: Lamp compartment is hot!  Allow it to cool down before changing lamp!
Lamp Changing Procedure: 
1.  Switch off...

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Compatibility Modes
Remark : “*” com-pressed computer image.
Mode Resolution 
Appendices
(ANALOG)
V.Frequency(Hz) H.Frequency(kHz) 
(DIGITAL)
V.Frequency(Hz) H.Frequency(kHz) 
VESAVGA640x3507031.57031.5
VESAVGA640x3508537.98537.9
VESAVGA640x4008537.9----
VESAVGA640x4806031.56031.5
VESAVGA640x4807237.97237.9
VESAVGA640x4807537.57537.5
VESAVGA640x4808543.38543.3
VESAVGA720x4007031.57031.5
VESAVGA720x4008537.98537.9
SVGA800x6005635.25635.2
SVGA800x6006037.96037.9
SVGA800x6007248.17248.1...

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104.3172.31
235.01232.3150.5082.1550.15
55.00
67.00119.00
110.00

Max. / Min.602.5 /
402.50
49.83

Please note that damage resulting from incorrect installation will invalidate the war-ranty.
Appendices
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 
met the following specifications:
  Screw...

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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
Appendices          

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Appendices
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
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...

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Regulation & safety notices
This appendix lists the general notices of your Projector. 
FCC notice 
This device has been tested and found to comply with the limits 
for a Class B digital device pursuant to Part 15 of the FCC rules. 
These limits are designed to provide reasonable protection 
against harmful interference in a residential installation. This 
device generates, uses, and can radiate radio frequency energy 
and, if not installed and used in accordance with the instruc-
tions,...

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Operation conditions 
This device complies with Part 15 of the FCC Rules. Operation 
is subject to the following two conditions:
1.this device may not cause harmful interference, and
2.this device must accept any interference received, includ-ing interference that may cause undesired operation. 
Notice: Canadian users 
This Class B digital apparatus complies with Canadian 
ICES-003. 
Remarque à l’intention des utilisateurs cana-
diens 
Cet appareil numerique de la classe B est conforme a...