Epson Powerlite 7500c Multimedia Projector Users Guide

Problems with the Projector
119
Note: Each Help menu displays navigation buttons and descriptions 
at the bottom of the screen. Projector control functions are 
displayed as an icon in the help text.
Problems with the Projector
If you have problems with the projector, first turn it off and unplug 
it. Then plug the power cord back in and turn on the projector. If this 
does not solve the problem, check the lights on top of the projector. 
These lights alert you to problems with projector operation
....

6    Troubleshooting             120
See the following pages for information on what to do when you see 
these warning lights or encounter other specific problems with the 
projector.
◗
The power light is flashing orange and you cannot turn on the 
projector.
The projector is cooling down. Wait until the light turns off and then 
turn on the projector.Light Color Meaning
Temperature Flashing orange The projector is too hot.
Red The projector has turned off automatically because of 
overheating.
Flashing...

Problems with the Projector
121
If the Source button is pushed to switch video input sources and no 
source is connected, the projector enters a cool-down mode 
(flashing orange power light) and then goes into sleep mode (steady 
orange power light). Connect a video source, then press the Power 
button to resume. 
◗
The power light does not come on.
Turn off the projector, check that the power cable is connected 
securely both at the electrical outlet and the projector, and press the 
Power button...

6    Troubleshooting             122
Problems with the Remote Control
◗
The projector doesn’t respond to remote control commands.
The remote control may be too far from the projector, or at too wide 
an angle to the infrared receiver. See page 52 for details.
The remote control’s batteries may be low on power. Replace them.
Make sure the projector’s mouse cable is securely connected to both 
your computer’s mouse port and to the projector’s Mouse/COM port 
(or the main cable if you are using the ELP...

Problems with the Image or Sound
123
Problems with the Image or Sound
◗
An image does not appear on the screen.
Check that the power light is on and the lens cover is off. Also make 
sure the cables are securely connected, as described in Chapter 1.
The correct image source may not be selected. Press the Source 
button on the remote control or the control panel to choose another 
image source. 
Some screen savers appear as a blank screen. Make sure any screen 
savers on your computer are disabled while...

6    Troubleshooting             124
◗
Only part of the computer image is displayed.
If the computer’s output resolution setting is higher than 800 
× 600 
(PowerLite 5500C) or 1024 
× 768 (PowerLite 7500C), the projector 
resizes the image. If the computer output is not compatible with this 
resizing, choose a different display setting on the computer. 
In Windows 3.x, use Windows Setup in the Main program group. In 
Windows 95/98, right-click on the desktop, select Properties, click 
the Settings tab,...

Problems with the Image or Sound
125
the image source is selected correctly. If your projector is attached 
to a Macintosh, make sure that the DIP switches on your Macintosh 
desktop adapter are set correctly. (See your Macintosh 
documentation if you need instructions.) When NO SIGNAL is 
displayed, you cannot access the Video menu.
◗
A blank screen is displayed.
The computer signal cannot be interpreted by the projector. Verify 
the display format (see page 130). When you see a blank screen, you...

6    Troubleshooting             126
◗
There is no sound.
First check that the volume setting is not turned all the way down 
and that the audio/video cable is securely attached to both the 
projector and the audio source. Also, make sure that the Mute button 
is not enabled.
The wrong source may be selected. Press the Source button on the 
remote control or control panel to select the proper source.
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127
7Technical Specifications General
Type of display Poly-silicon Thin-Film Transistor
(TFT), active matrix
Size of liquid crystal panels    Diagonal: 0.9 inches (22.9 mm) 
Lens F=1.7–2.0, f=37–48 mm
Resolution 5500C: SVGA 800 
× 600 pixels
7500C: XGA 1024 × 768 pixels
Color reproduction 24 bit, 16.7 million colors
Image brightness 5500C: 650 lumens (ANSI)
7500C: 800 lumens (ANSI)
Image size 19-300 inches
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7    Technical Specifications             128
Projection distance 3.3–53.46 feet (1.1–16.3 meters)
Projection methods Front, rear, upside-down (ceiling
mount)
Internal speaker system 2 
× 1 W SRS 3D stereo output
Optical aspect ratio 4:3 (horizontal:vertical)
Zoom ratio 1:1.3
Tilt angle 0° to 12°
Supported video 
interface standards NTSC, NTSC 4.43, PAL, PAL N,
PAL M, PAL 60, SECAM
Projector 
Lamp
Type UHE (Ultra High Efficiency)
Power consumption 120 W
Lamp life 2000 hours at 50% brightness
Part number...