Philips AQ 6688/14 manual Troubleshooting, Problem, Possible Cause, Hum when using mains adapter

Models: AQ 6688/14

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TROUBLESHOOTING

English

AQ 6688 /14 - page 10

TROUBLESHOOTING

If a fault occurs, first check the points listed below before taking the set for repair. If you are unable to remedy a problem by following these hints, consult your dealer or service centre.

WARNING: Under no circumstances should you try to repair the set yourself, as this will invalidate your guarantee.

PROBLEM

POSSIBLE CAUSE

• REMEDY

Hum when using mains adapter

– Adapter used is unsuitable

Use a Philips SBC6650 or other standard regulated 3V DC adapters

Poor sound/ no sound

Headphones plug not fully inserted

• Insert plug fully

Volume is turned down

• Turn up volume

– Tape head dirty

• Clean tape head (see MAINTENANCE)

Severe radio hum/ distortion

FM aerial (headphones cord) not fully extended

• Extend FM aerial fully

Set too close to TV, computer, etc.

• Move set away from other electrical equipment

– Batteries weak

• Insert new batteries

Front panel controls/ display does not function properly

– Electrostatic discharge

Use a ball-point pen to press the RESET button and then reprogramme settings

Auto reverse occurs before end of tape

– High friction on tape

• Try fast winding the tape once

The model number is found at the bottom of the set and the production number in the battery compartment.

This set complies with the radio interference requirements of the European Union.

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Philips AQ 6688/14 Troubleshooting, Problem, Possible Cause, Hum when using mains adapter, Adapter used is unsuitable