Sharp HT-M750H Operation Manual page 76

Troubleshooting chart (continued)
HT-M750H
ENGLISH
Tuner
Symptom
The radio makes
unusual noises
continuously.
The preset chan-
nel cannot be re-
called.
Remote control
Symptom
The remote con-
trol does not op-
erate.
The unit cannot
be turned on with
the remote con-
trol.
Condensation
Sudden temperature changes, storage or operation in an extremely
humid environment may cause condensation inside the cabinet
(laser pickup, etc.) or on the transmitter on the remote control.
Condensation can cause the unit to malfunction. If this happens,
leave the power on with no disc in the unit until normal playback is
possible (about 1 hour). Wipe off any condensation on the transmit-
ter with a soft cloth before operating the unit.
E-65
Possible cause
Is the unit placed near the TV or computer?
Is the FM aerial or AM loop aerial placed
properly? Move the aerial away from the AC
power lead if it's located nearby.
Did you remove the plug from the wall sock-
et, or did a power failure occur?
Set the channel again.
Possible cause
Is the battery polarity correct?
Are the batteries dead?
Is the distance or angle incorrect?
Are there any obstructions in front of the
unit?
Is the remote control sensor exposed to
strong light (inverter fluorescent light, direct
sunlight, etc.)?
Is the remote control for another equipment
used simultaneously?
Is the AC power lead of the unit plugged in?
Are the batteries inserted?
If trouble occurs
When this product is subjected to strong external interference
(mechanical shock, excessive static electricity, abnormal supply
voltage due to lightning, etc.) or if it is operated incorrectly, it may
malfunction.
If such a problem occurs, do the following:
1 Set the unit to the stand-by mode and turn the power on again.
2 If the unit is not restored in the previous operation, unplug and
plug in the unit, and then turn the power on.
Note:
If neither operation above restores the unit, clear all the memory by
resetting it.
Clearing all the memory (reset)
1 Press the ON/STAND-BY button to enter the power stand-by
mode.
2 Whilst pressing down the OPEN/CLOSE button, press the ON/
STAND-BY button.
The unit turns on and the front panel opens. Then it enters the
stand-by mode with the panel open.
3 Whilst pressing down the
press the ON/STAND-BY button until "SYSRESET" appears.
Caution:
When you reset, all data is deleted and the settings return to the
default. (DVD initial settings are retained.)
button and the FUNCTION button,