Troubleshooting Chart - Sharp HT-CN400DVA Operation Manual

Troubleshooting chart (continued)
HT-CN400DVA
HT-CN500DVA
! Tuner
Symptom
" Is the unit placed near the TV or
The radio makes unusual
noises continuously.
" Is the FM aerial or AM loop aerial
" Did you remove the plug from the
The preset channel cannot
be recalled.
! Remote control
Symptom
" Is the battery polarity respected?
The remote control does not
operate properly.
" Are the batteries dead?
" Is the distance or angle incorrect?
" Are there any obstructions in front of
" Is the remote control sensor ex-
" Is the remote control for another
" Is the AC power lead of the unit
The unit cannot be turned on
with the remote control.
" Are the batteries inserted?
48
Possible cause Reference
page
computer?
P. 13
placed properly? Move the aerial
away from the AC power lead or the
unit if located near.
P. 41
wall socket, or did a power failure
occur?
Set the channel again.
Possible cause Reference
page
P. 17
P. 17
the unit?
P. 17
posed to strong light (inverter fluo-
rescent light, direct sunlight, etc.)?
equipment used simultaneously?
P. 15
plugged in?
P. 17
! 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.
When the protection circuit is activated:
When short-circuiting the speaker leads or turning the volume too high, the protection
circuit may be activated and the system may enter the stand-by mode.
Unplug the unit and, after 15 minutes or more, plug it in again.
Turn down the volume if set too high.
! Before transporting the unit
1 Press the ON/STAND-BY button to turn the power on.
2 Press the OPEN/CLOSE button to open the disc tray.
Remove the disc inserted in the unit.
3 Press the OPEN/CLOSE button to close the disc tray.
4 Press the ON/STAND-BY button to enter the stand-by mode, and
then unplug the AC power lead from the wall socket.
! Condensation
Sudden temperature changes, storage or operation in an extremely humid environ-
ment may cause condensation inside the cabinet (laser pickup, etc.) or on the trans-
mitter 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 transmitter with a soft cloth before operating the unit.
HTCN400_500DVA_A5.fm
03/10/24 92LCN400A0270