BenQ CP6501K User Manual page 116

116 Troubleshooting
The remote control does
not work
Remote control failure
Machine automatically
shutdown
Signal out of range
Background has vertical
lines or streaks
Image lack of color, color
is incorrect
Display format that is not
supported.
Touch function invalid
Touch positioning not
correct
• Have you locked the remote control function? Unlock the
function and try again.
• Check for incorrect battery orientation.
• Check for dead batteries.
• Check your distance and angle from the display.
• Check whether remote control is properly being pointed
at the display's remote control sensor window.
• Check for any obstacle between the remote control and
the remote control sensor window.
• Check that the remote control sensor window is not
under strong fluorescent lighting, or in direct sunlight.
• Check for any devices (computer or personal digital
assistant, PDA) nearby that transmit infrared signals which
may cause interference to signal transmission between the
remote control and the display. Turn off the infrared
function of these devices.
• Check whether there are other objects between remote
control and television remote control receiving window,
thus leading to failure of remote control.
• Check whether the battery electrode in the remote
control is correct.
• Check whether remote control needs to replace battery.
• Whether set sleep or not.
• Check whether there is sudden power outage.
• Check whether there is no signal automatic shutdown.
• Check whether display is set correctly.
• Check whether resolution is the best resolution.
• Adjust line and field synchronization in menu.
• Select automatic correction in menu.
• Adjust clock and phase position in menu.
• Check whether VGA is not well connected or has quality
problem.
• Adjust chromaticity and brightness or contrast in menu.
• Select automatic correction in menu.
• Adjust clock and phase position in menu.
• Check whether touch driver is installed and started.
• Check whether the size of article touched is comparable
with finger.
• Check whether driver is properly installed and make
correction.
• Check whether the active pen is facing the screen.