Troubleshooting Guide - Harman Kardon DC520 Owner's Manual

The DC520 is designed for trouble-free operation. However, like any mechanical device it may occasionally malfunction. In most cases
the trouble can be resolved simply by finding the problem from the list below and following the steps outlined. If a problem persists, contact
your dealer or an authorized Harman Kardon Service Center.
PROBLEM
The unit does not turn on when
the power switch is pressed.
No sound is heard when
PLAY is pressed.
The cassette does not record.
Cassette dub does not record.
Newly recorded tapes have
distorted sound.
Sound is intermittend
Playback sound is muffled, distorted
or has reduced high frequencies.
All specifications are subject to change without notice.
Dolby and HX Pro are registered trademarks of Dolby Laboratories Licensing Corp.
Troubleshooting
CAUSE
• No AC Power.
• Tape may be blank.
• Improper settings at receiver or preamp.
• Interconnect cables connected
to wrong jacks.
• Record protection tabs removed.
• Record Level knob set too low.
• No source signal feeding recorder.
• Interconnect cables connected
to wrong jacks.
• Tapes in wrong transport.
• Input level too high.
• Tape is worn.
• Mismatched Dolby NR modes.
• Tape heads are dirty.
• Tape heads have become
magnetized.
9
SOLUTION
• Make certain AC power cord is firmly
plugged into a live outlet.
• Check to see if outlet is switch controlled.
• Check to see if level indicators do not move.
This confirms a blank tape.
• Check switch settings at receiver. Make certain
that Tape Monitor or correct input is selected.
• Make certain that the OUTPUT of the DC520 is
connected to the TAPE IN jack of your receiver or
preamp.
• Place tape over record protection holes.
• Increase input level
• Check Source Selection on
receiver to make sure the proper source is selected.
• Make certain that the DC520 INPUT jacks are
connected to the TAPE OUT jacks on your receiver
or preamp.
• Make certain that source tape is in Secondary
Transport and blank (record) tape is in Primary
Transport.
• Reduce input level so that record level display peaks
at "0" to "+3".
• Replace cassette with new, high-quality tape.
• Make certain that Dolby NR mode used for
playback is identical to mode used in recording.
• Clean tape heads.
• Demagnetize tape heads.
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