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Auto Tape Selector

Power

Eject

Direction Mode

Cont Play

Off

B

C

Dolby NR

Inpu

Dual  Auto Reverse

Reset

Sync Rev

PLAY

Harman Kardon DC520

Dual Cassette Deck

Owner’s Manual

Eject

Input Balance

Headphones

ut Level

Auto Tape Selector

Dual  Auto Reverse

REC/PLAY

Reset

Copy

Record

High Speed Copy Rec Mute

Owner’s Manual

DC520 Dual Cassette Deck

Table of Contents

Introduction and Safety Information . . . . . . . . . . . . . . . . . 1–2 

Front Panel Controls. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Front Panel Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–8

Specifications  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Troubleshooting Guide  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

©1998 Harman Kardon, Incorporated

250 Crossways Park Drive
Woodbury, NY 11797

Introduction and Safety Information

1

*Dolby is a trademark of Dolby Laboratories

Thank you for choosing the Harman
Kardon DC520 dual cassette deck. 
The DC520 is an exceptionally well 
engineered product that offers high 
performance and ease of use. 

We ask that you take a few minutes to read
through this Owner’s Manual to
familiarize yourself with the controls and
functions. This brief investment of time
will yield dividends in the form of years of
listening pleasure.

If you have any questions about this 
product, its installation or operation,
please contact the retailer or custom
installer who sold you the product. They
are your best source for local information.

■ 

Dual Mode Copying for high-quality
dubs in either “real time” or at “high
speed.”

■ 

Auto Tape Sensor automatically 
recognizes the type of tape in use and
sets the bias/equalization circuits
accordingly.

■ 

Dolby* B-type and C-type noise 
reduction for recordings that are 
virtually free of noise and hiss.

■ 

Dolby HX Pro  provides more accurate
recording of high frequencies without
sacrificing signal to noise ratio or
causing distortion.

■ 

Sync Reverse Dubbing programs the
record system to compensate for record
and playback tapes of unequal length. 

■ 

Dual Auto Reverse with multiple
playback modes for extended
uninterrupted listening.

■ 

Buttons and counters separate for each
transport ensures versatility and ease of
use.

Verify Line Voltage Before Use
Your DC520 has been designed for use with
220~240 volt AC current. Connection to a
line voltage other than that for which it is
intended can create a safety and fire
hazard, and may damage the unit. 

If you have any questions about the 
voltage requirements for your specific 
model, or about the line voltage in your
area, contact your selling dealer before
plugging the unit into a wall outlet.

Do Not Use Extension Cords
To avoid safety hazards, use only the power
cord supplied with your unit. If a
replacement cord is used, make certain
that it is of similar gauge. We do not 
recommend that extension cords be used
with this product. As with all electrical
devices, do not run power cords under rugs
or carpets or place heavy objects on them.
Damaged power cords should be replaced
immediately by an authorized 
service station with cords meeting factory
specifications.

Handle The AC Power Cord Gently
When disconnecting the power cord 
from an AC outlet, always pull the plug,
never pull the cord. If you do not intend to
use the unit for any considerable length of
time, disconnect the plug from the AC
outlet.

Do Not Open The Cabinet
There are no user serviceable components
inside this product. Opening the cabinet
may present a shock hazard, and any
modification to the product will void your
guarantee. If water or any metal object
such as a paper clip, wire or a 
staple accidentally falls inside the unit,
disconnect it from the AC power source
immediately, and consult an authorized
service station. 

■ 

To assure proper operation, and to avoid
the potential for safety hazards, place
the unit on a firm and level 
surface. When placing the unit on a
shelf, be certain that the shelf and any
mounting hardware can support the
weight of the product.

■ 

Make certain that proper space is
provided both above and below the unit
for ventilation. If this product will be
installed in a cabinet or other enclosed
area, make certain that there is
sufficient air movement within the
cabinet.

■ 

Do not place the unit directly on a 
carpeted surface. 

■ 

Avoid installation in extremely hot 
or cold locations, or an area that is
exposed to direct sunlight or heating
equipment.

■ 

Avoid moist or humid locations.

Cleaning
When the unit gets dirty, wipe it with a
clean, soft dry cloth. If necessary, wipe it
with a soft cloth dampened with mild
soapy water, then a fresh cloth with 
clean water. Wipe dry immediately with a
dry cloth. NEVER use benzene, thinner,
alcohol or any other volatile cleaning
agent. Do not use abrasive cleaners, as
they may damage the finish of metal parts.
Avoid spraying insecticide near 
the unit.

Moving The Unit
Before moving the unit, be certain to 
disconnect any interconnection cords with
other components, and make 
certain that you disconnect the unit 
from the AC outlet.