42
Left and right channels of audio are reversed, or 
sound comes out of only one side.
Are left and right audio cables connected to the opposite 
terminal, or is one side disconnected?
Disc does not play back automatically.
Have you set a disc that has an automatic playback 
function?
The Player heats up during use.
When using this Player, the console cabinet may heat 
up depending on the usage environment. This is not a 
malfunction.
The Player makes a snapping sound when 
starting playback or loading a disc.
The player may sometimes make a snapping sound when 
starting playback if it has not been operated in a while. 
These sounds are not malfunctions of the player but are 
normal operating conditions.
Cannot operate the Player.
Are you operating the Player within the specified operating 
temperature range? (Page 45) 
STANDBY indicator will remain lit.
When the AC cord is removed from the outlet, the 
STANDBY indicator will remain lit for a short period. This is 
normal and is not a malfunction.
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Troubleshooting
NOTE 
Reset
If this Player receives strong interference from a source such as 
excessive static electricity, strong external noise, malfunction 
of power supply, or voltage caused by lightning during use or a 
wrong operation is sent to the Player, errors like the Player not 
accepting an operation may occur. Press and hold POWER on the 
Player until “
” appears on the front panel display when the 
Player does not operate properly even after the power has been 
turned off. Then, after the STANDBY indicator is lit, turn on the 
power.
When a reset is performed while the power is on, the Player will 
turn off. Turn the power on again. At this point, it may take a few 
moments for the system processing to finish before the Player 
is ready for use. During the system processing, the BD/DVD/CD 
mode indicator on the front panel display of the Player will blink. 
Once the system processing has finished, the indicators will finish 
blinking and then light up normally. You can operate the Player 
when the BD/DVD/CD mode indicator is lit.
Since all settings including the language setting stored in memory 
are also reset when a reset has been performed, they must be set 
again.
When the problem persists even after performing a reset, unplug 
the AC cord and plug it in again. If this does not solve the problem, 
contact the nearest service center approved by SHARP.
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Messages Relating to BD and DVD
The following messages appear on the TV screen in case the disc you tried to playback is not appropriate or the 
operation is not correct.
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On-screen Error Messages
Error message Possible Error Suggested Solution
CANNOT PLAY. The disc cannot be played back with this Player.• Check the disc, and load it correctly.•
INCOMPATIBLE DISC. If you load a disc which cannot be played with 
this Player (i.e. a scratched disc), or if you load a 
disc upside down, this message will appear, and 
the disc tray will automatically pop out.
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Occurs if the loaded disc cannot be played 
because it is a non-standard disc or scratched, 
etc.
• Remove the disc.•
CANNOT OPERATE. Occurs if an operation is incorrect.•
—
THIS USB MEMORY IS NOT 
FORMATTED PROPERLY. PLEASE 
FORMAT THE MEMORY IN USB 
MEMORY MANAGEMENT.
Occurs if there is a formatting error.• Format the USB memory again.•
THE CONNECTED USB MEMORY 
CANNOT BE USED. IT SHOULD BE 
COMPLIANT WITH USB2.0.
Occurs if USB memory not compliant with USB 
2.0 is used (i.e. USB 1.0/USB 1.1).
• Connect USB 2.0-compliant USB memory.•
BD-HP21U_en.indd   42BD-HP21U_en.indd   42 2008/07/17   19:44:402008/07/17   19:44:40