Optoma Tx774 Projector User Manual

 
Introduction 
11 
ITEM LABEL DESCRIPTION SEE PAGE:
14.  Power switch Turns the power on and off 43
15.  Power Connect the supplied power cord 
16.  Security Lock Secure to permanent object with a Kensington® Lock  
system 43
 
Note: 
If your video equipment has both S-video and RCA  jacks (composite video) connect to the S-video 
connector. S-video provides a better quality signal.  

 
Introduction 
Bottom view 
 
ITEM LABEL DESCRIPTION SEE PAGE: 
1.  Ceiling support 
holes. Contact your dealer for information on mounting your projector 
on the ceiling. 
2.  Height adjuster but-
ton
 
Push to release height adjuster 
3.  Height adjuster Adjuster drops down when adjuster button is 
pushed 
23
4.  Tilt adjuster Adjust angle of the picture 23
 
Note: 
For ceiling installations, use approved mounting har dware and M3 screws with a maximum screw 
depth of 8 mm (0.31 inch). 
 
12  

 
Introduction 
Remote Control 
 
Important: 
1.  Avoid using the projector with bright fluoresc ent lighting turned on. Certain high-frequency fluo-
rescent lights can disrupt remote control operation. 
 
2. Be sure nothing obstructs the path between the re mote control and the projector. If the path be-
tween the remote control and the projector is obstructed, you can bounce the signal off certain 
reflective surfaces such as projector screens. 
 
3. The buttons and keys on the projector have the...

 
Introduction 
14 
ITEM LABEL DESCRIPTION SEE PAGE: 
3.  Laser Press to operate the on-screen pointer 
4.  Up Up arrow when connected through USB to a PC 
5.  Right Right arrow when connected through USB to a PC 
6.  Down Down arrow when connected through USB to a PC 
7.  Page Down Page down when connected through USB to a PC 
8.  Up cursor  Navigates and changes settings in the OSD  
9.  Right cursor  Adjusts volume 
10.  Down cursor 
11.  Volume +/- 
12.  Zoom 
Zoom in/out 24
13.  S-Video Input...

 
Introduction 
15 
ITEM LABEL DESCRIPTION SEE PAGE: 
25.  Left Left arrow when connected through USB to a PC  
26.  Enter Enter key when connected through USB to a PC 
27.  Power  Turns the projector on or off 
28.  Laser Use as on-screen pointer.  DO NOT POINT IN EYES. 
The remote control can only interface with a co mputer when connected to the computer through a 
USB cable connection. The computer cable connects a computer to  the projector for display pur-
poses only. 
Remote Control Operating...

 
Introduction 
Inserting the Remote  Control Batteries 
1. Remove the battery compartment 
cover by sliding the cover in the 
direction of the arrow. 
 
2. Insert the supplied batteries taking 
note of the polarity (+/-) as shown 
here. 
 
3. Replace the cover. 
 
 
Caution: 
1. Only use AAA batteries.(Alkaline battery is better). 
 
2. Dispose of used batteries accordi ng to local ordinance regulations.  
 
3. Remove the batteries when not usi ng the projector for prolonged periods. 
 
16  

 
Setup and Operation 
Setup and Operation 
Connecting Input Devices 
A PC or notebook computer as well as video devices  can be connected to the projector at the same 
time. Video devices include DVD, VCD, and VHS play ers, as well as movie camcorders and digital 
still cameras. Check the user manual of the connec ting device to confirm it has the appropriate output 
connector.  
  
ITEM LABEL DESCRIPTION 
A 
Rear IR 
Receiver Receiver for IR signal from remote control. 
B 
DVI-D Connect the computer...

 
Setup and Operation 
18 
ITEM LABEL DESCRIPTION 
 
USB Connect the supplied USB cable from a computer for USB mouse func-
tion and firmware upgrades. 
 
12V Connect a 12-volt trigger cable from the screen to this connector. When 
connected, the screen automatically adjusts vertically to match the 
screen aspect ratio. 
 
RS-232 Reserved for installation control. 
 
Warning: 
As a safety precaution, disconnect all power to  the projector and connecting devices before making 
connections.  

 
Setup and Operation 
Starting and Shutting  down the Projector 
1.  Slide the lens cover. 
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. 
Turn on the connected devices. 
 
4.  Ensure the LAMP LED is on a steady (not 
flashing) orange and then press the 
Power button to turn on the projector.  
 
The projector splash screen displays and 
connected devices are...

 
Setup and Operation 
7.  When the “ Power Off? / Press Power 
again” message appears, press the 
Power  button. The projector will turn off. 
 
8.  Turn off the main  Power switch when the 
Lamp LED stops flashing.  
 
Caution: 
Do not unplug the power cord until the Ready LE D stops flashing, indicating the projector has 
cooled down. 
 
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