Sharp PN-65HC1-LCD - Troubleshooting

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Troubleshooting
If you are experiencing any problem with your display, before
calling for service, please review the following troubleshooting
tips.
There is no picture or sound.
• ThepowerLEDisoff.
- Is power supplied to this monitor?
- Is the power cord disconnected? (See page 14.)
- Is the main power switch off? (See page 16.)
• ThepowerLEDlightsred.
- This monitor is in standby state. Turn on the power. (See
page 16.)
Remote control does not work.
• Arethebatteriesinsertedwithpolarity(+,-)aligned?(See
page 15.)
• Arethebatteriesexhausted?
• Pointtheremotecontrolunittowardthemonitor’sremote
control sensor. (See page 15.)
• Isoperationwiththeremotecontrolunitdisabled?(See
page 37.)
• The remote control unit cannot be used if the remote
control number has been changed. Change the remote
control number to “0”.
To change the remote control number, hold down the “ID
set” button and the “0” button for 5 seconds or more.
The remote control unit’s buttons for operating the HDMI-
connected device do not work.
• IsHDMICECsettoONontheSettingmenu?
• Switchtoadifferentinputmode,andthentryswitchingthe
input mode back to HDMI.
Sound from left and right speakers is reversed.
Sound is heard from only one side.
• Areaudiocablesconnectedproperly?
There is a picture but no sound.
• Isthesoundmuted?
• Makesurethevolumeisnotsettominimum.
• Areaudiocablesconnectedproperly?
Unstable video.
• Thesignalmaybeincompatible.
• TrytheautomaticscreenadjustmentwhenD-SUBisinuse.
The video from the HDMI input terminal does not appear
properly.
• DoestheHDMIcablesupport4K,andisitHDMIstandard
compliant? The monitor will not work with cables that are
not standard compliant.
• Istheinputsignalcompatiblewiththismonitor?(Seepages
46 and 47.)
• Whenconnectingadevicethatdoesnotsupport4KVsync
50/60 Hz signals, set the HDMI Mode to Mode2.
The video from D-Sub input terminal does not appear
correctly.
• Istheinputsignalcompatiblewiththismonitor?(Seepage
46.)
Control buttons do not work.
There is no picture.
• Loadnoisesfromoutsidemaybeinterferingwithnormal
operation. Turn off the main power and turn it on after
waiting at least 5 seconds, and then check the operation.
The touch panel does not respond.
• IstheUSBcableconnectedproperly?
• Didyouconnectyourcomputertothevideoinputterminal
on the front when connected to TOUCH PANEL terminal 1
on the front, or to the video input terminal on the rear when
connected to TOUCH PANEL terminal 2 on the the rear?
• IstheTouchOn/OffbuttonsettoOff? (See page 10.)
The response of the touch panel is slow.
Some parts of the screen do not respond.
A different place is touched.
• Isthescreenexposedtodirectsunlightorotherstrong
light? The touch panel uses infrared rays and thus may not
operate correctly.
• Isthereanobstaclebetweentheinfraredtransmitter/
receiver and the touch pen or your finger? An obstacle will
prevent correct operation. If your fingers or a sleeve are too
close to the screen, correct operation will not be possible.
• Istheinfraredtransmitter/receiverdirty?Gentlywipeoff
any dirt with a soft cloth.
• Ifthetouchpanelistouchedwithasmalltiplessthanabout
5/16 inch (8 mm) x 5/16 inch (8 mm), the touch may not
be detected by infrared and correct operation will not take
place.
• WhenstartingyourcomputerorconnectingtheUSBcable,
do not touch the touch panel. If you touch the touch panel,
this may be detected as an element failure in the infrared
transmitter/receiver and incorrect operation will result.