T+A DD 820 M User Manual page 62

Problem: Picture unstable.
Synchronisation signal absent.
Cause:
Push connector in firmly, or set television to
Remedy:
'AV operation' mode.
Problem: Monochrome picture only.
Incompatible picture norms set on the TV,
Cause:
the decoder and the source device.
Remedy: Set TV, decoder and source device to the
same picture norm.
If problems persist, set the decoder to the
Note:
'RGB / Video' norm; select the picture norm
'Video', occasionally also termed 'FBAS',
'CVBS' or 'Composite', on the TV set and
the source device.
Problem: When playing an NTSC-DVD the on-
screen menu is distorted.
Cause: The TV set does not feature automatic
format detection for NTSC, and has been
set manually to NTSC. The decoder's on-
screen menus are only generated in PAL
format, so this operation is not possible.
Use a TV set with automatic PAL / NTSC
Remedy:
format switching, or use the decoder's
integral screen.
Problem: Picture correct, but no sound audible
through the decoder.
No sound connection between source
Cause 1:
device and decoder.
Remedy: Complete the sound connection (analogue
or digital depending on mode); see section
entitled 'Installation, Using the unit for
the first time, Safety notes'.
No sound input, or the wrong sound input,
Cause 2:
has been assigned to the picture input in
the 'Source Setup'.
Remedy: Check the sound input to which the source
device is connected. Call up the 'Source
Setup'
assignment.
The loudspeaker is switched off.
Cause 3:
Remedy 1: Switch on the loudspeaker using the
   
Remedy 2: Check that the decoder has not switched
itself off due to overheating or a short-circuit
in the loudspeaker connection.
Problem: When
programmes, you hear unwanted noise.
The television set is not capable of muting
Cause:
(silencing) the SCART audio outputs.
Remedy: Use the Cinch/sound outputs of the TV set
(if present) instead of the SCART sound
output.
Problem: Decoder switches off after a certain
period of operation.
Unit is overheating.
Cause:
Remedy: Make sure that the cooling airflow is
adequate; reduce volume if necessary.
62
and carry out the
button.
you switch television
correct