ViewSonic Pj750 Projector User Manual

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Using The Projector
Use the control buttons on the projector control pad and the remote control to make quick 
adjustments to the controls listed in the following section.
Control Buttons
Press a control button to display a menu, then use the arrow buttons to adjust the selected control. 
The buttons on the projector control pad and on the remote control are explained below:       
Figure 6: Projector and Remote Controls
Standby/On Button 
Press the STANDBY/ON button to begin the warm-up period. The power LED flashes 
green during warm-up and lights a steady green when the projector is ready to use.
The projector cannot be restarted within 60 seconds after it is turned off because the 
projector enters a cool-down mode. This is a safety feature.
Input Button (Video and RGB Buttons)
Use the INPUT button on the projector or the Video and RGB buttons on the remote 
control to select the input source. 
Press the INPUT button on the projector to cycle through input sources: RGB 1, RGB2, 
Video or S-Video. 
On the remote control: 
-Press the RGB button to select a computer as the input source.
-Press the Video button to toggle between Video and S-Video.
 Remote control 
Projector control padTIMER
STANDBY/ON
MUTE RESET
Video
Laser
RGB Standby/On
Blank
Disk pad
Mouse/right 
Auto
Menu
Menu selectPo s i ti o n
Reset
Fre ezeVo l u m e
Mute
Timer Magnify
LED indicators
Input button Standby/On
Mute button
Reset button
Menu buttonbutton 
						

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Menu Button
Press the MENU button on the remote control or the projector control pad to display the 
OnView® menus. 
1Use the left or right arrow buttons to select a menu (Setup, Input, Image, Options).
2Use the up and down arrow buttons to highlight an item on the displayed menu.
3Use the right arrow button to select the highlighted menu item.
4Use the arrow buttons as indicated on screen to adjust the menu item.
Menu Select Button
Press the MENU SELECT button on the remote control to display a single menu item at a 
time.
Position Button
Use the POSITION button on the remote control and the arrow buttons to adjust the 
position of the screen image.
NOTE: Position works only on a magnified image and when the input is from a computer 
(RGB).
Magnify Buttons
Use the MAGNIFY buttons on the remote control to resize a portion of the projected 
image.
-Press the + button to enlarge the projected image.
-Press the - button to decrease the projected image.
-Press the OFF button to turn off magnification.
Reset Button
Press the RESET button on the projector or on the remote control to restore the factory 
default settings. Select an item and press the Reset button.
Volume Buttons
Use the VOLUME buttons on the remote control to adjust the loudness of the audio 
output. 
Mute Button
Press the MUTE button to temporarily turn off the audio output.
Blank Button
Press the BLANK button on the remote control to display a blank screen showing only the 
background color.
Freeze Button
Press the FREEZE button on the remote control to freeze (or hold) an image on screen.
Timer Button 
Press the TIMER button on the remote control to activate the on-screen timer. Press the 
button again to turn off the display.
Auto Button
Use the AUTO button on the remote control to automatically adjust the vertical position 
and horizontal position, phase, and size.
AUTO 
						

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OnView Menus
Use the OnView® menus to make precise adjustments to the options described in the section below.
To access and adjust the OnView menus:
1Press the MENU button on the remote control or the projector control pad to display the OnView® 
menus. 
2Use the left or right arrow buttons to select a menu (Setup, Input, Image, Options).
3Use the up and down arrow buttons to highlight an item on the displayed menu.
4Use the right arrow button to select the highlighted menu item.
5Use the arrow buttons as indicated on the screen to adjust the menu item.
6Press the left arrow button to accept the adjustment and return to the menu.
NOTE: If you do not push a button after making an adjustment, the change applies automatically 
after a few seconds. 
Setup Main Menu 
Bright adjusts the brightness of the projected image.
Contrast adjusts the contrast of the projected image.
Vertical Position (computer input only) moves the projected image up or down.
Horizontal Position (computer input only) moves the projected image to the right or left.
Horizontal Phase (computer input only) eliminates visible horizontal lines on the projected image.
Horizontal Size (computer input only) widens or narrows the projected image.
Sharpness (video input only) makes the edges of the image appear softer or sharper.
Color (video input only) increases or decreases the saturation of the color.
Tint (video input only) adjusts the hue of the projected image from red to green.
Color Balance R darkens or lightens the Red color of the projected image.
Color Balance B darkens or lightens the Blue color of the projected image.
Aspect selects an aspect ratio for the projected image. The aspect ratio is the ratio of width to height 
of the projected image.
0
-2
+1 
0
0 100
100
800
SETUP INPUT OPT.IMAGE
BRIGHT
CONTRAST
V POSIT
H POSIT
H PHASE
H SIZE
COLOR BAL  R
COLOR BAL  B
ASPECTBRIGHT
CONTRAST
SHARPNESS
COLOR
TINT
COLOR BAL  R
COLOR BAL  B
ASPECT
SETUP INPUT OPT.IMAGE
0
0 0
0
0 +1
+1
SETUP Main Menu RGBSETUP Main Menu Video 
						

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Input Menu 
Image Menu 
INPUT Menu
The Input menu displays the options described below:
RGB (computer input only) displays the horizontal and vertical sync signal frequency of an RGB 
input source, such as a computer.
Video (video input only) automatically detects and selects the input signal, or you can select the 
specific input standard for your country from the list that displays. 
Auto automatically adjusts the vertical and horizontal position, phase, and size.
IMAGE Menu
The Image menu displays the options described below:
Keystone corrects image distortion that can occur when the angle of the projection is increased. 
Keystone resizes the top or bottom of the projected image. See “Adjusting the Projector Angle” on 
page 7.
Blank selects the background color of a blank screen.
Mirror adjusts the orientation of the screen image based upon the placement of the projector.
Select Normal for a table-top projection.
Select H: Invert for rear projection.
Select V: Invert for a front projection ceiling mount.
Select H&V: Invert for a rear projection ceiling mount.
Start up selects a start-up screen. You can select or deselect the ViewSonic Welcome screen to 
display automatically at start-up.
SETUP OPT.IMAGE
RGB
VIDEO
AUTOfH:38kHz
fV:60Hz
INPUT
KEYSTONEBLANKMIRROR
START UP+1
SETUP INPUT OPT.IMAGE 
						

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Options Menu 
OPTIONS Menu
The Options menu displays the options described below:
Vo l u m e increases or decreases the speaker loudness.
Menu Color selects a background color for on-screen menus (Orange, Yellow, Green, Blue, 
Purple, Gray, Black).
Timer provides a countdown clock that you can set, typically to time a presentation. Set the 
countdown Timer between 1 and 99 minutes. The time displays on the lower right portion of the 
screen when you press the Timer button on the remote control.
Language allows you to select a menu-display language from a list.
Auto Off causes the projector to automatically enter a standby, cool-down mode after a specified 
amount of time has elapsed without a signal. 
Sync on G allows you to toggle On or Off the Sync on G option. 
CAUTION: If you are unsure whether you are using a Sync on G input device, leave this option set 
to Off. 
128
SETUP INPUT OPT.IMAGE
VOLUME
MENU COLOR
TIMER
LANGUAGE
AUTO OFF
SYNC ON G 
						

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No Signal Menu 
NO SIGNAL Menu
To adjust projector settings before connecting input devices, use the 
No Signal menu to set the options below:
Vo l u m e increases or decreases the speaker loudness.
Keystone corrects image distortion that can occur when the angle of the projection is increased. 
K e y s t o n e   r e s i z e s   t he top or bottom of the projected image. See “ A d j u s t i n g   t h e   P r o j e c t o r   A n g l e ”   o n  
page 7.
Blank selects the background color of a blank screen.
Mirror adjusts the orientation of the screen image based upon the placement of the projector.
 Select Normal for a table-top projection.
 Select H: Invert for rear projection.
 Select V: Invert for a front projection ceiling mount.
 Select H&V: Invert for a rear projection ceiling mount.
Start up selects a start-up menu. You can select or deselect the ViewSonic Welcome menu to 
display automatically at start-up.
Menu Color selects a background color for on-screen menus (Orange, Yellow, Green, Blue, 
Purple, Gray, Black).
Timer provides a countdown clock that you can set, typically to time a presentation. Set the 
countdown timer between 1 and 99 minutes. The time displays on the lower right portion of the 
screen when you press the Timer button on the remote control.
Language allows you to select a menu-display language from a list.
Auto Off causes the projector to automatically enter a standby, cool-down mode after a specified 
amount of time has elapsed without a signal. 
Sync on G allows you to toggle On or Off the Sync on G option. 
CAUTION: When you are unsure whether you are using a Sync on G input device, leave this 
option set to Off. 
						

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Other Information
Specifications  
1 May require a Macintosh adapter LCDTy p e
Pixels
ColorsThree 0.9” 1024 x 768 polysilicon, active matrix TFT LCD
786,432 (1024 x 768 V)
16.7 million
LensTy p e
Focal length
Keystone correctionManual zoom (1.2x), manual focus
F=1.7~ 2.0 (f = 37.5 - 45.1 mm)
Fixed 10:0 upward shift, normal at 10.5° ~ 8.8° projection 
angle
DisplayImage size
Focus distance
Aspect ratio
Orientation76.2 to 762 cm (31” to 300” inches)
0.7 to 9.0 m (2.3 to 29.5 feet)
4:3
Front/rear desktop, front/rear ceiling
LampLamp
Lamp lifeUHB, 160 watts, ultra compact, replaceable
1500 hours
Audio                 Power 1 watt stereo
Input signal   RGB analog
Video
S-video
Frequency75 ohms, 0.7vp-p 
H/V separated, composite (TTL)
NTSC / NTSC 4.43, PAL, SECAM (1.0 Vp-p, 75 ohms)
Luminance signal 1.0 Vp-p, 75 ohms termination
Chrominance signal 0.29Vp-p (NTSC), 0.30Vp-p (PAL), 
75 ohms termination
f
h: 15.75/15.63, 31-80 kHz fv:56-120Hz
Compatibility PC
Macintosh
1
VideoCompatible up to 1024 x 768 (compressed)
Compatible up to 1024 x 768 (compressed)
NTSC, NTSC 4.43, PAL(-BGHI), PAL-M, PAL-N, PAL60, 
SECAM
Remote rangeAngle
Distance30 degrees cone angle (except rear-vertical: -20 degree)
3 m (10 feet)
ResolutionMaximum
Recommended1280 x 1024 @ 75Hz
1024 x 768 @ 60Hz
Input ports RGB
Video
S-video
Audio
Serial control15-pin mini D-sub
RCA (x1)
Mini DIN 4-pin (x1)
Stereo mini jack
15-pin mini D-sub
Pow er  Vo l t a g e
Consumption100-120/220-240 VAC 50/60 Hz (auto switch)
250 watts
Operating conditions
Storage conditions Temperature
Humidity
Altitude
Temperature
Humidity
Altitude0° to 35°C (32° to 95°F)
10% to 85% (no condensation)
0 to 1,830 m (0 to 6,000 feet)
-20° to 60°C (-4° to 140°F)
10% to 85% (no condensation)
0 to 2,100 m (0 to 7,000 feet)
Dimensions and weightProjector 3.25 kgs (7.2 lbs)
298 x 228 x 76 mm 
RegulationsFCC class B, UL, C-UL, CE/TUV 
						

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Timing Chart
The following table lists the maximum refresh rates for standard resolutions (timing presets). Not all 
video cards can operate at these rates. See your graphics card user guide to ensure compatibility.   
Table 2: Computer Signal Rates and Resolution
Resolution fH (kHz) fV (Hz) Rating Signal mode
720 x 400 37.9 85.0 VESA TEXT
640 x 480 31.5 59.9 VESA VGA-3
640 x 480 35.0 66.7 Mac 13” mode
640 x 480 37.9 72.8 VESA VGA-3 (72Hz)
640 x 480 37.5 75.0 VESA VGA-3 (75 Hz)
640 x 480 43.3 85.0 VESA VGA-3 (85 Hz)
800 x 600 35.2 56.3 VESA SVGA (56 Hz)
800 x 600 37.9 60.3 VESA SVGA (60 Hz)
800 x 600 48.1 72.2 VESA SVGA (72 Hz)
800 x 600 46.9 75.0 VESA SVGA (75 Hz)
800 x 600 53.7 85.1 VESA SVGA (85 Hz)
832 x 624 49.7 74.5 Mac 16” mode
1024 x 768 48.4 60.0 VESA XGA (60 Hz)
1024 x 768 56.5 70.1 VESA XGA (70 Hz)
1024 x 768 60.0 75.0 VESA XGA (75 Hz)
1024 x 768 68.7 85.0 VESA XGA (85 Hz)
1152 x 864
(compressed)67.5 75.0 VESA
1280 x 960
(compressed)60.0 60.0 VESA
1280 x 1024 64.0 60.0 VESA SXGA (60 Hz)
1280 x 1024
(compressed)80.0 75.0 VESA TEXT 
						

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Troubleshooting
No power
 Make sure power button (or switch) is ON. 
 Make sure A/C power cord is securely connected to a power outlet.
 Plug another electrical device (like a radio) into the power outlet to verify that the outlet is 
supplying proper voltage.
Power is on but the projector displays only the logo
 Make sure the input source is connected.
Projector image is too dark or too light
 Adjust the Contrast and Brightness settings.
 Press Reset from the OnView
® display menu to reset factory defaults.
Projector image is completely black (no light coming from the lamp)
 Make sure the lens cover is open.
 Make sure the power cord is connected and the unit is turned on. The LED should be steady green.
 Adjust Contrast and Brightness.
 The projector may have overheated. Let the unit cool down.
 Make sure ventilation openings are clear.
 Make sure air-filters are clean.
 Replace the lamp module.
The image appears unstable or misplaced
 Press Auto.
 Check that the resolution is compatible between the input device and the projector. See the 
manufacturer’s instructions for your specific input device.
 If the projector is connected to a source with a non-standard computer or video card, adjust the 
frequency of the computer signal.
The image is out of focus
 Adjust the focus.
 Make sure that the projection distance is at least 5 feet.
 Make sure the lens is clean.
 Adjust the H Phase.
Cooling fan is not working when the lamp is lit
 Have the projector repaired by an authorized dealer.
Caution: Do not operate the projector in this condition.
The lamp shuts off
 A minor power surge can cause the lamp to shut off. Turn off the Power switch. Let the projector 
cool down, then restart.
 The projector may have overheated. Allow the projector to cool down, then restart.
 Recheck the power cord connection.
 Replace the lamp module. 
						

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Projector does not respond to the remote control (or responds poorly)
 Make sure you are within 10 feet from the projector.
 Point the remote at the screen or at the front of the projector.
 Make sure the infrared sensors (on the front and on the back) of the projector are not blocked.
 Darken the room. The lighting may be affecting the remote control.
 Replace the battery.
No sound
 Adjust the Volume and make sure the Mute button is toggled to OFF.
 Verify that the audio input is properly connected.
 Adjust the audio source device.
No video
 Check the video input connections. 
 Adjust the Brightness.
A bright dot appears in the picture
 This is a characteristic of liquid crystal technology and is usually not a problem.