Chapter 5: Troubleshooting - Toshiba TD-Z551 User Manual

Chapter 5
Troubleshooting
General troubleshooting
Before calling a service technician, review this chapter for possible causes/solutions for the problem you are experiencing.
Before you begin to troubleshoot any problem, first unplug the monitor from the AC wall outlet, wait approximately one
minute, and then plug the monitor back into the AC wall outlet. If the problem still exists attempt to troubleshoot the
problem.
No picture
• The signal cable should be securely connected to the display card/computer.
• The display card should be securely seated in its slot.
• The Main Power Switch and the computer power switch should be in the ON position.
• Make sure that the correct mode has been selected on the display card or system being used.
(Please consult the display card or system manual to change the graphics mode.)
• Check the monitor and your display card with respect to the compatibility and recommended settings.
• Check the signal cable connectors for bent or pushed-in pins.
Power button does not respond
• Unplug the power cord of the monitor from the AC outlet to turn off and reset the monitor.
Image persistence
• Please be aware that LCD Technology may experience a phenomenon known as "image persistence." Image
persistence occurs when a residual or "ghost" image of a previous image remains visible on the screen. Unlike CRT
monitors, LCD displays' image persistence is not permanent, but constant images being displayed for a long period of
time should be avoided. To alleviate image persistence, turn off the monitor for as long as the previous image was
displayed. For example, if an image was on the monitor for one hour and a residual image remains, the monitor should
be turned off for one hour to erase the image.
As with all display devices, recommends displaying moving images and using a moving screen saver at regular
intervals whenever the screen is idle or turning off the monitor when not in use.
Image is unstable, unfocused or swimming is apparent
• Signal cable should be securely attached to the computer.
• Use the OSD Image Adjust controls to focus and adjust the display by increasing or decreasing the fine adjustment.
When the display mode is changed, the OSD Image Adjust settings may need to be re-adjusted.
• Check the monitor and your display card with respect to the compatibility and recommended signal timings.
• If the displayed text is garbled, change the video mode to the non-interlace mode and use 60 Hz refresh rate.
Image of component signal is greenish
• Check to see if the YPbPr input connector is selected.
LED on the monitor is not lit (No green or red color can be seen)
• Power Switch should be in the ON position and power cord should be connected.
• Make certain the computer is not in the power-saving mode (touch the keyboard or mouse).
RED LED on the monitor is blinking
• A certain failure may have occurred. Please contact your nearest authorized service facility.
Displayed image is not sized properly
• Use the OSD Image Adjust controls to increase or decrease the coarse adjustment.
68