Harman Kardon TD420 - Troubleshooting Guide; Common Operational Issues

Troubleshooting
This
unit
is
designed
for
trouble-free
operation;
most
problems
users
encounter
are
due
to
operating
errors.
So
if
you
have
a
problem,
first
check
the
chart
below
for
a
possible
solution. If the problem persists, consult your authorized Harman Kardon service center.
If the Problem Is:
Make Sure That:
The Display Panel does not illuminate when the Power switch is pressed.
Oo
The power cord is plugged in securely.
The outlet is live.
No sound is heard when Play is pressed
The cassette deck does not record.
oojo
oO
The tape is not at its end.
The tape is not blank.
(Level indicators on the Display sare will flash if sound is recorded on the tape.)
The receiver/pre-amp/integrated amplifier is on, and its Source, Tape
Monitor, and Speaker switches are set correctly.
The tape deck is connected properly.
The hookup wires are unbroken.
The erase-prevention tabs have not been removed from the tape cassette.
The Input Level knob is set high enough.
The tape deck is connected properly.
The hook-up cables are unbroken.
When a tape you have recorded is played back, the sound is distorted.
OHyOooo0|o0 0
The Input Level was not set too high during recording.
A DolbyNR-encoded source tape was copied with the Dolby NR and B/C
properly set.
The tape is not worn out.
The tape head is not dirty or magnetized (see Page #8).
When a tape you have recorded is played back, the sound is muffled, with
reduced high frequencies.
The Dolby Noise Reduction switches were set incorrectly during recording.
The tape head is not dirty or magnetized (see Page #8).
The CD Sync feature does not activate the CD player.
Ooa;oo0 oa
A Harman Kardon CD player is being used.
The remote cable is connected between the TD420 and the CD player.