NEC MT820 - Manual (Page 37)

Common Problems & Solutions
Problem
Does not turn on
No picture
Image isn’t square to the screen
Picture is blurred
Image is scrolling vertically,
horizontally or both
Remote control does not work
Status indicator is lit or
blinking
Cross color in RGB mode
Check These Items
• Check that the cord is plugged in and that the power switch on the back panel is on.
• Ensure that the air filter and filter panel are installed correctly. (See page 64.)
• Check the status light to see if the projector has overheated or the lamp usage exceeds 2100 hours.
• Use the menu icons to select your source (Video, S-Video, RGB1 or 2). (See pages 51 and 52.)
• Ensure your cables are connected properly.
• Use icons to adjust the brightness and contrast.
• Remove the lens cap.
• Reset the settings or adjustments to factory preset levels using the RESET icon on the Settings Menu.
• Reposition the projector to improve its angle to the screen.
• Adjust the focus. (See page 20 or 28.)
• Reposition the projector to improve its angle to the screen.
• Ensure that the distance between the projector and screen is within the adjustment range of the lens.
• Use icons to select the source you want to input.
• Make sure the recalled Custom Memory supports the current input signal.
• Install new batteries. (See page 64.)
• Make sure there are no obstacles between you and the projector.
• Stand within 23 feet (7m) of the projector.
See the Status Light message chart on pages 69 and 70.
If “Auto Picture” is off, turn it on. If “Auto Picture” is on, turn it off and balance the image with the Picture Adjustment icon and
Fine Picture Adjustment icon.
To Contact Your NEC Service Representative, Call 1-800-836-0655
TROUBLE SHOOTING
71
72
This section explains conditions that you will encounter when operating your MT1020
while displaying an SXGA (1280
ן1024) image.
When a menu or message is displayed while an SXGA image is projected, several lines
of information will be lost.
When the "LAMP USAGE 2000 HOURS" message appears, several lines of information
will be lost.
The "LAMP USAGE 2000 HOURS" message will not appear when the freeze button is
activated.
SXGA images inherently display a 5 to 4 ratio, resulting in an image that appears to be
smaller and more square than the 4 to 3 format commonly displayed.