T+A DVD 820 M, Руководство пользователя

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74
Trouble-shooting
Many problems have a simple cause and a corres-
pondingly simple solution. The following section de-
scribes a few difficulties you may encounter, and the
measures you need to take to cure them.
If you find it impossible to solve a problem with the help
of these notes, please disconnect the unit from the mains
and ask your authorised
 specialist dealer for advice.
Problem: Machine responds correctly when front
panel buttons are pressed, but cannot
be remote-controlled.
Cause 1: Batteries in remote control handset
exhausted or fitted incorrectly.
Remedy:
Fit new batteries, or re-fit batteries with
correct polarity.
Cause 2:
No visual contact between remote control
transmitter and remote control receiver of
the
PT 820 M .
Remedy: Ensure direct visual contact between
remote control transmitter and receiver
(glass doors may prevent contact).
The maximum range of the remote control
system is about 8 metres.
Position the remote control receiver so
that it is not subjected to direct sunlight or
excessively bright lighting. Fluorescent
lamps and energy-saving bulbs are
powerful sources of interference.
Cause 3:
The DVD player is not selected as current
listening source on the pre-amplifier,
integrated amplifier or receiver, i.e. the
control commands from the handset are
being passed to another
'M' system
device.
Remedy: Press the     (or     - see next
point) on the remote control handset, and
try again.
Cause 4: M
LINK
cable not correctly connected.
Remedy: Check that the lead is firmly connected.
Problem: No sound, or distorted sound.
Cause: Audio connection to amplifier or TV set not
correct.
Remedy: Complete the connections as shown in the
wiring diagram; push the plugs in firmly,
check cables and replace if necessary.
Problem: No sound signal and picture signal.
Cause: Connecting plug not connected correctly
to the digital output socket on the
machine.
Remedy: Complete connections as per wiring
diagram; push connectors in firmly.
Problem: Surround decoder / receiver fails to
recognise digital surround programs
(Dolby Digital or dts).
Cause: The digital output of the DVD 820 M is
wrongly configured ( PCM instead of ALL ).
Remedy: Set the digital output to the correct ALL
setting (see 'Basic device settings' ).
Problem: The disc will not play once the disc
drawer is closed.
Cause 1: Disc not inserted correctly.
Remedy: Position the disc centrally: printed face up.
Cause 2: Disc soiled.
Remedy:
Carefully clean the disc by wiping with a
soft cloth from the centre to the edge.
Replace the disc and try again.
Cause 3: Disc damaged in the area of the Table of
Contents (TOC).
Remedy:
Disc unusable.
Cause 4:
Machine has got very cold (e.g. after
transport), allowing condensation to form
on the laser sensor optics.
Remedy: Leave the machine to warm up for about
an hour in a warm, well ventilated place.
Problem: Disc stops playing, or "skips".
Cause:
Disc dirty or damaged.
Remedy:
Clean disc. Damage cannot be repaired!