Optoma Txr774 Projector User Manual

English
Rear View
1. Rear IR Receiver
2. DVI-I Connector
3. VGA/ SCART/ YPbPr Connector
4. VGA-out
5. S-Video Input Connector
6. Video Input Connector
7. Audio Input Connector 
(left and right)
8. Audio In
9. Audio Out
10. USB Connector 
(Connect to PC for Remote Mouse function)
11. +12V Relay
12. RJ-45 Connector 
(RJ45 function is dependent on the model purchased)
13. RS-232 Connector
14. Power Socket
15. Power Switch
16. Kensington™ Lock Port
Introduction 

English
Remote Control
 
1. Button LED
2. Power On/Off
3. Laser Button
4. Page Up
5. Mouse Right Click
6. Four Directional Select Keys
7. Re-Sync
8. Page Down
9. Volume +/-
10. Zoom
11. AV mute
12. Video Source
13. VGA Source
14. Freeze
15. S-Video Source
16. DVI-I
17. Brightness
18. Menu
19. Keystone +/- 
20. Source
21. Enter
22. Mouse Left Click
23. PC/Mouse control
24.
Number Buttons
(for password input) 
 
Introduction 

English
Connecting the Projector
Connect to Computer / Notebook
1. RS-232 Cable
2. DVI-I Cable
3. VGA Cable
4. RGB-out
5. USB Cable
6. Audio-in (RCA Type cable)
7. Audio-in (mini jack)
8. +12V Relay Cable
9. RJ45 Cable 
(RJ45 function is dependent on the model purchased)
10. Power Cord
v Due to the difference 
in applica-
tions for each 
country, some 
regions may 
have different 
accessories.
Installation 

English
Connect to Video Sources
1. Power Cord
2. Component Cable (optional)
3. RGB to Component Adapter (optional)
4. VGA Cable
5. RCA Type audio cable (optional)
6. SCART to RGB & S-Video Adapter (optional)
7. S-Video Cable (optional)
8. Audio-out—RCA Type cable (optional)
9. Composite Video Cable
v Due to the difference in 
applications for 
each country, 
some regions 
may have differ-
ent accessories.
Installation 

English
Powering On / Off the Projector
Powering On the Projector
1. Slide the lens cover. u
2. Connect the power cord to the   projector [A]. Connect the other  
end to a wall outlet. Switch [B]  
from off (O) to on ( — ).
3. The POWER and LAMP LEDs on the projector turn on. Ensure the  LAMP  LED  is  on  a  steady  (not  flashing)  orange  and  the  POWER 
LED is on a steady (not flashing) green. Press the  POWER button 
to turn on the projector  v. 
The startup screen displays in...

English
Powering Off the Projector
1. Press POWER  to turn off the projector lamp, a message displays on the 
projector’s screen.
2. Press  POWER again to confirm, otherwise the message disappears 
after 15 seconds. 
3. The cooling fans continue to operate for about 10 seconds for cooling   cycle.  When  the  LAMP  LED  is  on  a  steady  (not  flashing)  orange 
and the POWER LED is on a steady (not flashing) green, the pro -
jector has entered standby mode.
If you wish to turn the projector...

English
Adjusting the Projected Image
Adjusting the Projector’s Height
The projector is equipped with elevator foot for adjusting the image height.
To raise the image:
1. Press the elevator button u.
2. Raise the image to the desired height angle  v, then release the 
button to lock the elevator foot into position.
3. Use screw in foot  w to fine-tune the display angle. 
To lower the image:
1. Press the elevator button.
2.  Lower  the  image,  then  release  the  button  to  lock  the  elevator...

English
Adjusting the Zoom / Focus (0.7” XGA Series)
You may turn the zoom ring to zoom in or out. To focus the image, 
rotate the focus ring until the image is clear. The projector will focus 
at distances from 3.28 to 36.7 feet (1 to 11.2 meters).
Adjusting Projection Image Size
3.28 (1m)
11.2 (3.4m) 18 (5.5m)
25.3 (7.7m) 32.8 (10m)
36.7 (11.2m)
Height
Diagonal
Width92.96
(236.1cm)
27.34
(69.4cm) 150.37
(381.9cm) 210.52
(534.7cm) 273.4”
(694.4cm) 306.21
(777.8cm)
HdHd
79.68
(202.4cm)
23.43...

English
Adjusting the Zoom / Focus (0.55” XGA Series)
You may turn the zoom ring to zoom in or out. To focus the image, 
rotate the focus ring until the image is clear. The projector will focus 
at distances from 3.28 to 32.8 feet (1 to 10 meters).
Adjusting Projection Image Size
3.28(1m)
11.2(3.4m) 18(5.5m)
25.3(7.7m) 32.8(10m)
Height
Diagonal
Width88.53
(224.87cm)
76.75”
(194.95cm)
26.04”
(66.14cm)
22.57”
(57.34cm)
143.21
(363.76cm)
124.16”
(315.37cm) 200.5
(509.3cm)
173.82”
(441.51cm)...

English0
Adjusting the Zoom / Focus (0.65” WXGA Series)
You may turn the zoom ring to zoom in or out. To focus the image, 
rotate the focus ring until the image is clear. The projector will focus 
at distances from 3.28 to 32.8 feet (1 to 10 meters).
Adjusting Projection Image Size
3.28(1m)
11.2(3.4m) 18(5.5m)
25.3(7.7m) 32.8(10m)
Height
Diagonal
Width104.54
(265.5cm)
90.72”
(230.4cm)
30.74”
(78.1cm)
26.68”
(67.7cm)
169.11
(429.5cm)
146.75”
(372.7cm) 236.75
(601.3cm)
205.45”
(521.8cm) 307.46...