Symptom

Cause Analysis

Solution

Failing to play

Running down of battery

Change for another battery or use a power adapter to supply power

Improper insertion of power adapter

Insert the power adapter properly

Losing sound

Voice volume at minimum

Increase the voice volume

No tape

Put the tape in the cartridge

Unrecorded tape

Change for a recorded tape

Chewed tape

Recondition he chewed tape

Fail to record

Unlevel safety erasing tongue bin

Level up the safety erasing tongue bin

Sound distortion

Mouldy tape

Change for another tape

Adhered tape

Recondition the adhered tape

Dirty magnetic head or pinch roller

Clean the magnetic head or the pinch roller with a clean cotton bud dipped with absolute alcohol or special detergent

Low battery

Change for another battery or use a powder adapter to supply power