BenQ L23 series, User Manual

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Symptom Factor Solution
Snowflake speckle and
sound noise.
1.Antenna cable connector is loose,
cable is damaged.
2.Channel setting is incorrect.
3.Antenna cable type is not matching.
4.Direction or position of antenna
cable is incorrect.
5.Signal is weak.
1.Check the antenna cable connector plug whether or
not loose, cable whether or not perfect.
2.Refer to channel setting method, resetting again.
3.Check antenna cable type(VHF/UHF)
4.Adjust direction or position of antenna cable .
5.Attempt to use signal amplifier.
TV image is better, but has
noise.
TV system setting is incorrect. Enter to "TV" menu, reset sound system again .
No image. No sound.
Power plug is loose, power
cord don't connect well.
1.Check power cord whether or not connect well.
2.Check if " " on the panel is on.
TV image have stripe.
Signal is exposed to disturb,
such as car, neon light, electric
blower etc.
TV image have shadow.
1.TV signal is reflected by valley
or building.
2.Toward direction of antenna
cable is incorrect.
1.Use high directional antenna cable. Use Fine
Tune of "TV".
2.Adjust toward direction of antenna cable.
No color.
1.Color saturation is too low.
2.Color system is incorrect . 1.Enter "PICTURE" to add up color saturation.
2.Enter "TV" to change color system.
TV no sound.
1.Volume setting is too low.
2.Sound is muted.
3.Sound system is incorrect.
1.Adjust volume to proper value.
2.Press "MUTE" button on remote control to
eliminate mute.
3.Enter "TV" to change sound system.
CAUTION : Don't let your machine display the same picture for a long time, please set up a screen protection
procedure. If a high contrast picture remains for along time, this picture will bring a 'leave shadow' in screen. Usually
the 'leave shadow' will disappear gradually when you turn off the machine power. However, this trouble can't be
repaired, Which isn't in range of warranty.
Electrical release at turning off. It is normal. Noise Signals at turning off.
Remote control distance is
short, lose control.
1.Remove objects, avoiding cover the receive
window of remote control.
2.Change battery.
Computer display faintly.
1.Adjustment is incorrect.
2.Display mode is incorrect. 1.Use auto-adjustment function.
2.Use commend mode.
Computer display image
excursion, not full screen,
over screen.
1.Adjustment is incorrect.
2.Display mode is incorrect.
1.Use auto-adjustment function.
2.Enter "GEOMETRY" to adjust horizontal or
vertical position.
3.Use recommended mode.
Computer no display,and
prompt no signal input,red
indicator LED twinkling.
Signal cable is loose or fall off.
Check signal cable whether or not loose, fall off,
reconnect well again.
Don't use electric blower around machine, adjust
antenna cable direction to reduce disturb.
Can not operate this
machine.
Exterior influence, for example
lightning, static electricity and so
on, which are possibly to disturb
the normal operation of this
machine.
Press " " button to turn off electrical source,
then press " " button to turn on the TV again
after 1-2 minutes.
1.Receive window of remote
continue was covered by
objects.
2.The battery energy of remote
control is to low.
Simple Troubleshooting
16