BenQ RP6504 User Manual page 49

Problem
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
With horizontal or vertical
stripes or image dithering
No color, color is weak or
image is weak
With image but without
sound
Only one speaker has sound
VGA output without sound
• 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 touch pen is facing the screen.
• Check whether signal wire is well connected.
• Check whether other electronic equipment or power tools are
placed around the machine.
• Adjust chromaticity and brightness or contrast in menu.
• Check whether signal wire is well connected.
• Check whether mute button is pressed for mute.
• Press VOL+/VOL- to adjust volume.
• Check whether audio line is connected correctly.
• Adjust sound balance in menu.
• Check whether computer sound control panel only sets up
one sound channel.
• Check whether audio line is connected correctly.
• Check whether the external device is connected with a
headphone cable.
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Solution