T+A Elektroakustik CC 820 M user manual Trouble shooting

Trouble shooting

Many problems have a simple cause which is simple to put right.

In this section we list a number of possible problems together with the method of eliminating them.

If you meet a problem which cannot be sorted out using these notes, then please disconnect the mains supply at the wall socket and contact an authorised  service workshop without delay.

Problem:	The CC 820 M	responds	correctly
	when the buttons are pressed, but
	cannot be remote-controlled.
Cause 1:	Batteries in the remote control unit
	inserted incorrectly or flat.
Remedy:	Insert batteries correctly and/or replace
	with new cells.
Cause 2:	No visual contact between system and
	remote control handset.
Remedy:	Make sure that the remote control
	transmitter has direct line-of-sight con-
	tact with the receiver - note that glass
	doors can interrupt the connection.
	Maximum range	between	transmitter
	and receiver: approx. 6 metres.
	Be sure to position the remote control
	receiver (located in the display) where it
	is not subjected to direct sunlight or very
	bright artificial light.
	Fluorescent tubes and energy-saving
	lamps are powerful sources of interfer-
	ence.
Cause 3:	The cassette recorder is not selected as
	the current listening source (TAPE 1) on
	the PT 820 M, i. e. the remote control
	commands are being passed to some
	other device in the 'M'-system instead of
	the cassette recorder.
Cause 4:	M LINK cable not connected correctly.
Remedy:	Check and push connector in firmly.
Problem:	The display shows 'NO TAPE' when
	you close the tray.
Cause:	There is no cassette in the tray.
Problem:	The tape deck refuses to record.
Ursache:	The write protect tab on the rear face of
	the cassette has been broken out.
Remedy:	Seal the slot with a piece of adhesive
	tape.

Problem:	On playback the sound fluctuates or
	is distorted.
Cause 1:	Record level set too high / bias level set
	too low.
Remedy:	Adjust levels and repeat the recording.
Cause 2:	Heads dirty.
Remedy:	Use a head cleaning cassette after
	every 10 hours or so of use. The proce-
	dure is described in the instructions
	supplied with the cleaning cassette.
Problem:	Audible background hiss or unnatural
	sounding reproduction on playback.
Cause 1:	The DOLBY noise reduction system
	used for playback is not the same as
	that used for the recording.
Remedy:	Select the DOLBY noise reduction
	system which was used for recording.
Cause 2:	Heads dirty.
Remedy:	Clean the heads using a cleaning cas-
	sette (see above).
Cause 3:	The heads and metal parts are mag-
	netised.
Remedy:	The heads and other metal parts which
	come into contact with the tape should
	be de-magnetised after about 20 - 30
	hours' use. Degaussing cassettes are
	available commercially for this purpose.

Note:

Athorough de-magnetising with a special tape head degaussing unit can be carried out by your specialist Hi-Fi dealer.

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