Harman Kardon TD420 Owners Manual - Page 10

Troubleshooting

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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: The Display Panel does not illuminate when the Power switch is pressed. No sound is heard when Play is pressed The cassette deck does not record. When a tape you have recorded is played back, the sound is distorted. When a tape you have recorded is played back, the sound is muffled, with reduced high frequencies. The CD Sync feature does not activate the CD player. Make Sure That: u The power cord is plugged in securely. u The outlet is live. u The tape is not at its end. u The tape is not blank. (Level indicators on the Display panel will flash if sound is recorded on the tape.) u The receiver/pre-amp/integrated amplifier is on, and its Source, Tape Monitor, and Speaker switches are set correctly. u The tape deck is connected properly. u The hookup wires are unbroken. u The erase-prevention tabs have not been removed from the tape cassette. u The Input Level knob is set high enough. u The tape deck is connected properly. u The hook-up cables are unbroken. u The Input Level was not set too high during recording. A Dolby NR -encoded source tape was copied with the Dolby NR and B/C properly set. u The tape is not worn out. u The tape head is not dirty or magnetized (see Page #8). u The Dolby Noise Reduction switches were set incorrectly during recording. u The tape head is not dirty or magnetized (see Page #8). u A Harman Kardon CD player is being used. u The remote cable is connected between the TD420 and the CD player. t37.:33- 9

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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.
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.
When
a
tape
you
have
recorded
is
played
back,
the
sound
is
distorted.
The
tape
is
not
at
its
end.
The
tape
is
not
blank.
(Level
indicators
on
the
Display
panel
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.
The
Input
Level
was
not
set
too
high
during
recording.
A
Dolby
NR
-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
CD
Sync
feature
does
not
activate
the
CD
player.
The
Dolby
Noise
Reduction
switches
were
set
incorrectly during
recording.
The
tape
head
is
not
dirty
or
magnetized
(see
Page
#8).
A
Harman
Kardon
CD
player
is
being
used.
The
remote
cable
is
connected
between
the
TD420
and
the
CD
player.
t37.:33
-
9