Read Sharp PN-465E (serv.man5) User Guide / Operation Manual online
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33
E
Troubleshooting
Before calling for repair services, make sure following checks
for possible remedies to the encountered symptoms.
There is no picture or sound.
• Is the power cord disconnected? (See page 12.)
• Is the main power switch set to “OFF”? (See page 14.)
• Is the monitor in standby mode (the power LED illuminating
in orange)? (See page 14.)
• Make sure correct input mode is selected. (See page 15.)
• If any external equipment is connected, make sure the
equipment is operating (playing back).
Remote control does not work.
• Are the batteries inserted with polarity (+,-) aligned? (See
page 13.)
• Are the batteries exhausted? (See page 13.)
• Point the remote control unit toward the monitor’s remote
control sensor. (See page 13.)
• Is the menu display hidden or is operation disabled? (See
page 24.)
Sound from left and right speakers is reversed.
Sound is heard from only one side.
• Are audio cables connected properly? (See pages 10 and
11.)
• Make sure audio cables for external speakers are
connected properly: left and right cables may be reversed
or one of the two cables may not be connected. (See page
11.)
• Check the setting of BALANCE for AUDIO menu. (See
page 18.)
There is a picture but no sound.
• Is the sound muted?
• Make sure the volume is not set to minimum.
• Is the PC audio cable (commercially available) connected?
• Are audio cables connected properly?
• Is the audio signal input properly to the audio input terminal
corresponding to the selected video input terminal?
Unstable video.
• The signal may be incompatible.
• Try the automatic screen adjustment when the PC2 input
terminal or PC3 input terminals is used.
PC1 or AV1 does not appear properly.
• Is the setting of DVI SELECT correct? (See page 19.)
• Is the input signal compatible with this monitor? (See pages
10 and 35.)
• Turn off the power to the connected equipment and then
turn the power on again.
• If the monitors are connected in a daisy chain, turn off the
power to all the monitors connected in a daisy chain and
then turn the power on again.
PC3 or AV2 does not appear properly.
• Is the setting of BNC SELECT correct? (See page 19.)
• Is the input signal compatible with this monitor? (See page
35.)
Control buttons do not work.
There is no picture.
• Some kind of load noises from outside might interfere with
normal operation. Turn off the power and turn it on after
waiting at least 5 seconds, and then check the operation.
Power LED flashes red.
“SERVICE CALL” appears in the corner of the screen.
• Hardware has a problem. Turn off the monitor and request
repair from your SHARP dealer.
When “TEMPERATURE” is displayed.
• When the internal temperature of the monitor rises
excessively, the brightness of the backlight decreases
in order to prevent high-temperature-related problems.
Remove the cause of the excessive rise in temperature.
(See the description below.)
The monitor sometimes makes a cracking sound.
• You may hear cracking sound from the monitor. This
happens when the cabinet slightly expands and contracts
according to change in temperature. This does not affect
the monitor’s performance.
■ Warning when temperature rises
• When the internal temperature of the monitor rises
excessively, the brightness of the backlight decreases
automatically in order to prevent high-temperature-
related problems. When this occurs, “TEMPERATURE” is
displayed on the screen and the Power LED flashes red
and green alternately.
• If the internal temperature rises further, the monitor
automatically enters standby mode. (The Power LED
continues flashing red and green alternately.)
Solution:
• If the monitor enters standby mode due to a rise in
temperature, to return to normal display, turn the main
power switch off and then back on again. The monitor,
however, will enter standby mode again if the cause of the
temperature rise is not eliminated. (See page 9.)
• Check whether the monitor is placed at a location where a
quick rise in temperature is likely. Internal temperature rises
quickly if the vents on the monitor are blocked.
• Internal temperature rises quickly if dust accumulates inside
the monitor or around the vents. Remove dust if possible.
Ask Sharp dealer about removing internal dust.
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