Harman Kardon CD Player HD720 User Manual

Harman Kardon  
HD720  
Compact Disc Player  
Open/Close  
TRACK  
MIN  
SEC  
TOTAL  
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15 16 17 18 19 20 OVER  
Display Program Random  
op/Clear  
Pause  
Search  
Skip  
Phones Level  
Phones  
Time Program Repeat  
Check  
Owner’s Manual  
 
Owner’s Manual  
HD720 Compact Disc Player  
Table of Contents  
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–3  
Unpacking. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3  
Front Panel Controls. . . . . . . . . . . . . . . . . . . . . . . . . . 4–5  
Rear Panel Connections . . . . . . . . . . . . . . . . . . . . . . . . . 6  
Remote Control Functions . . . . . . . . . . . . . . . . . . . . . 7–8  
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9  
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10–11  
Normal Play . . . . . . . . . . . . . . . . . . . . . . . . 10–11  
Disc-Handling Notes . . . . . . . . . . . . . . . . . . . . . 11  
Headphone Listening . . . . . . . . . . . . . . . . . . . . 11  
Display Dim. . . . . . . . . . . . . . . . . . . . . . . . . . . . 11  
Time Display . . . . . . . . . . . . . . . . . . . . . . . . . . . 11  
Program Search. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12  
Search . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12  
Skip . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12  
Intro Search . . . . . . . . . . . . . . . . . . . . . . . . . . . 12  
Programmed Play Operation . . . . . . . . . . . . . . . . . 13–14  
Programmed Play. . . . . . . . . . . . . . . . . . . . . . . 13  
Checking Program Contents. . . . . . . . . . . . . . . 13  
Clearing Program Tracks . . . . . . . . . . . . . . . . . 13  
Repeat Programmed Play. . . . . . . . . . . . . . . . . 14  
Auto Play . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14  
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15  
Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . 16  
250 Crossways Park Drive  
Woodbury, NY 11797  
©1998 Harman Kardon, Incorporated  
 
Introduction  
1
Thank you for choosing the Harman  
Kardon HD720 CD player. The HD720  
is an exceptionally well-engineered  
product that offers high performance  
and ease of use.  
If you have any questions about this  
product, its installation or operation,  
please contact your dealer, as they are  
your best source of local information.  
Intro Search to Automatically Scan  
a Brief Portion of Each Track to  
Quickly Locate Your Favorite  
Selections  
Sophisticated Digital-to-Analog  
Processing Using Premium-Grade  
1-Bit Circuits with Multilevel  
Delta-Sigma Conversion  
Description and Features  
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.  
Digital Output for Direct Connection  
to Outboard Digital-to-Analog  
Converters  
Sophisticated Programming  
Features to Automatically Play  
Tracks in Preprogrammed or  
Random Order  
 
Safety Information  
2
CAUTION: The HD720 uses a Laser  
System. To prevent direct exposure to  
the laser beam, do not open the cabinet  
enclosure or defeat any of the safety  
mechanisms provided for your protec-  
tion. DO NOT STARE INTO THE LASER  
BEAM. To ensure proper use of this prod-  
uct, please read this Owner’s Manual  
carefully and retain it for future use.  
Should the unit require maintenance or  
repair, please contact your local Harman  
Kardon Service Station. Refer servicing to  
qualified personnel only.  
Make certain that proper space is pro-  
vided 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 suffi-  
cient air movement within the cabinet.  
Important Safety Information  
Verify Line Voltage Before Use  
Your HD720 has been designed for use  
with 120-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.  
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.  
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.  
Avoid moist or humid locations.  
Installation Location  
Do not obstruct the ventilation slots on  
the top of the unit, or place objects  
directly over them.  
Do Not Use Extension Cords  
To assure proper operation, and to  
avoid the potential for safety hazards,  
place the unit on a firm and level sur-  
face. When placing the unit on a shelf,  
be certain that the shelf and any  
mounting hardware can support the  
weight of the product.  
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 depot with cords  
meeting factory specifications.  
CAUTION  
RISK OF ELECTRIC SHOCK  
DO NOT OPEN  
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.  
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE  
COVER (OR BACK). NO USER-SERVICEABLE PARTS INSIDE. REFER  
SERVICING TO QUALIFIED SERVICE PERSONNEL.  
The lightning flash with arrowhead  
symbol, within an equilateral triangle, is  
intended to alert the user to the  
The exclamation point within an  
equilateral triangle is intended to  
alert the user to the presence of  
presence of uninsulated “dangerous voltage”  
within the product’s enclosure that may be of  
sufficient magnitude to consittute a risk of  
electric shock to persons.  
important operating and maintenance  
(servicing) instructions in the literature  
accompanying the appliance.  
Do Not Open The Cabinet  
There are no user-serviceable compo-  
nents 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.  
WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK,  
DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE.  
CAUTION: TO PREVENT ELECTRIC SHOCK, MATCH WIDE  
BLADE OF PLUG TO WIDE SLOT, FULLY INSERT.  
ATTENTION: POUR EVITER LES CHOCS ELECTRIQUES, INRODUIRE LA  
LAME LA PLUS LARGE DE LA FICHE DANS LA BORNE CORRESPONDANTE DE  
LA PRISE ET POUSSER JUSQU'AU FOND.  
 
Safety Information  
3
Cleaning  
Reorient or relocate the receiving  
antenna.  
If you do not wish to save the packaging  
materials, please note that the carton  
and other sections of the shipping protec-  
tion are recyclable. Please respect the  
environment and discard those materials  
at a local recycling center.  
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, aerosol  
cleaners, 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.  
Increase the separation between the  
equipment and receiver.  
Connect the equipment into an outlet  
on a circuit different from that to  
which the receiver is connected.  
Typographic Conventions  
Consult the dealer or an experienced  
radio/TV technician for help.  
In order to help you use this manual  
with the remote control, front panel  
controls, rear panel connections and  
on-screen menus, certain conventions  
have been used.  
This device complies with Part 15 of the  
FCC Rules. Operation is subject to the  
following two conditions: (1) this device  
may not cause harmful interference, and  
(2) this device must accept interference  
received, including interference that may  
cause undesired operation.  
Moving The Unit  
Before moving the unit, be certain to dis-  
connect any interconnection cords with  
other components, and make certain  
that you disconnect the unit from the AC  
outlet.  
EXAMPLE – (bold type) indicates a  
specific remote control or front panel  
button, or rear panel connection jack  
EXAMPLE – (OCR type) indicates a  
message that is visible on the front panel  
information display  
NOTE: Changes or modifications may  
cause this unit to fail to comply with  
Part 15 of the FCC Rules and may void  
the user’s authority to operate the  
equipment.  
Important information for the user  
NOTE: This equipment has been tested  
and found to comply with the limits  
for a Class B digital device, pursuant to  
Part 15 of the FCC Rules. The limits are  
designed to provide reasonable protection  
against harmful interference in a  
residential installation. This equipment  
generates, uses and can radiate radio  
frequency energy and, if not installed and  
used in accordance with the instructions,  
may cause harmful interference to radio  
communication. However, there is no  
guarantee that harmful interference will  
not occur in a particular installation.  
If this equipment does cause harmful  
interference to radio or television recep-  
tion, which can be determined by turning  
the equipment off and on, the user  
is encouraged to try to correct the inter-  
ference by one or more of the following  
measures:  
1– (number in a square) indicates a  
specific front panel control  
a– (number in an oval) indicates a  
button or indicator on the remote  
Unpacking  
¡ – (number in a circle) indicates a  
rear panel connection  
The carton and shipping materials used  
to protect your new receiver during ship-  
ment were specially designed to cushion  
it from shock and vibration. We suggest  
that you save the carton and packing  
materials for use in shipping if you move,  
or should the unit ever need repair.  
To minimize the size of the carton in  
storage, you may wish to flatten it. This  
is done by carefully slitting the tape  
seams on the bottom and collapsing the  
carton down to a more two-dimensional  
appearance. Other cardboard inserts may  
be stored in the same manner. Packing  
materials that cannot be collapsed  
should be saved along with the carton in  
a plastic bag.  
 
Front Panel Controls  
4
(
*
&
HD 720  
Open/Close  
RANDOM INTRO REPEAT ALL ONE A_  
B
AUTO  
SEC  
TRACK  
ELAPSED  
REMAIN  
TOTAL  
INDEX  
MIN  
±
EACH  
PROGRAM  
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15 16 17 18 19 20 OVER  
Display Program Random  
Power  
Play  
Stop/Clear  
Pause  
Search  
Skip  
Phones Level  
Phones  
Time Program Repeat  
Check  
2
4
6
8
) @ $  
^
1
3
5
7
9 ! #  
%
1Power Switch  
8Skip Buttons  
%Headphones Level  
^Headphones Jack  
&Open/Close  
2Status Mode Indicator  
3Remote Sensor Window  
4Play Button  
9Display Button  
)Time Button  
!Program Button  
@Program Check Button  
#Random Button  
$Repeat Button  
*Information Display  
(Disc Drawer  
5Stop/Clear  
6Pause Button  
7Search Buttons  
 
Front Panel Controls  
5
1Power Switch: Press this switch  
to apply power to the HD720. When  
the switch is first turned on, the  
Status Mode Indicator light 2sur-  
rounding the switch will turn green.  
Once the unit has been turned on  
with this switch it may be operated  
from either the front panel or remote  
control. Press the switch again to  
turn the unit completely off.  
7Search Buttons: Press one of  
$Repeat Button: Press this button  
once to continually repeat all tracks  
on a disc. Press it again to repeat  
only the track currently being played.  
(See page 14 for more information.)  
these buttons to search forward  
or backwards  
through a  
disc to locate a particular portion of  
the selection.  
8Skip Buttons: Press one of  
these buttons to move to the next  
track ·, or to move back to the  
%Headphones Level: Turn this  
knob to increase or decrease the  
volume level for headphones con-  
nected to the HD720’s Headphones  
Jack ^. Note that changing this  
level will not change the sound level  
for the unit’s main output, as that  
remains constant.  
previous track fi  
.
2Status Mode Indicator: When  
the HD720 is in the ON mode, this  
indicator will glow green. When the  
unit has been placed in the Standby  
mode by pressing the Off button a  
on the remote, the indicator will glow  
amber, indicating that the unit is still  
connected to the AC main supply  
and is ready to be turned on from  
the remote control.  
9Display Button: Press this button  
once to dim the brightness of the  
display. Press it again to turn the dis-  
play off completely. An additional  
press of the button will return the  
display to normal brightness.  
^Headphones Jack: Connect a  
set of standard headphones to this  
jack for private listening.  
)Time Button: Press this button to  
select the time display. In normal  
operation, the display will show the  
running time of a track being played.  
Press the button once to check the  
time remaining for the track in play.  
Press the button a third time to view  
the total time remaining for the disc  
in play.  
&Open/Close: Press this button  
to open or close the disc drawer.  
The drawer may also be closed  
by pressing the Play button 4j,  
or by gently pressing the edge of  
the drawer. However, we do not rec-  
ommend pushing the drawer, as  
damage to the transport mechanism  
may result.  
3Remote Sensor Window: The  
sensor behind this window receives  
commands from the remote control.  
Keep this area clear if you wish to  
use the HD720 with a remote control.  
4Play Button: Press this button to  
start the playback of a CD. If the CD  
drawer is open, pressing this button  
will automatically close the drawer.  
!Program Button: This button  
is used to program the playback  
of a disc in a particular order. (See  
page 13 for complete instructions  
on programming the HD720.)  
*Information Display: This  
display provides details about the  
operation of the HD720.  
5Stop/Clear: Press this button to  
stop the disc currently being played.  
During programming functions, this  
button is also used to clear the  
system memory (see page 13).  
(Disc Drawer: To play a disc,  
open the drawer by pressing the  
Open/Close button &and place  
a full-size (5") or CD single (3") disc  
in the drawer with the printed side  
facing upwards. Press the Play  
button 4jto close the drawer  
and begin playback.  
@Program Check Button: Press  
this button to check the order of  
tracks programmed into the HD720’s  
memory. (See page 13 for complete  
information on programming the  
HD720.)  
6Pause Button: Press this button  
once to momentarily stop a disc.  
When the button is pressed again,  
the disc will resume play at the point  
it was stopped.  
#Random Button: Press this  
button to put a disc into play, and  
to have all of the tracks played in  
a random order. (See page 10 for  
more information.)  
 
Rear Panel Connections  
6
MODEL NO.: HD720  
HARMAN KARDON  
WOODBURY  
CAUTION  
AC 120V  
60 Hz  
12 W  
~
RISK OF ELECTRIC SHOCK  
DO NOT OPEN  
NEW YORK  
AVIS:  
RISQUE DE CHOC ELECTRIQUE NE PAS OUVRIR  
-
DIGITAL  
OUTPUT  
OUTPUT  
FIXED  
AUTOPLAY  
REMOTE  
COAXIAL  
LEFT  
IN  
OUT  
ON  
OFF  
RIGHT  
MANUFACTURED  
SERIAL NO.  
MADE IN CHINA  
¡
£ ¢  
§
¡ Coaxial Digital Output  
Fixed Audio Outputs  
£ Autoplay Switch  
¢ Remote Control Input  
Remote Control Output  
§ AC Power Cord  
enable the remote control system to  
operate even when the front panel  
Remote Sensor 3is blocked. It will  
also allow use of the HD720 with  
optional, external control systems.  
¡ Coaxial Digital Output: Connect  
this jack to the coaxial digital input of  
an external digital-to-analog converter  
for direct access to the digital signals  
of the HD720. DO NOT connect this  
jack to the standard audio inputs of  
any device.  
£ Autoplay Switch: When this  
switch is in the “ON” position, the  
HD720 will automatically go into the  
Play mode whenever the power is  
turned on and a disc is in the CD  
drawer. To disable the Autoplay func-  
tion, put the switch in the OFF position.  
(See page 14 for more information.)  
Remote Control Output:  
Connect this jack to the input of  
another compatible Harman Kardon  
remote controlled device to have the  
remote sensor on the HD720 provide  
signals to other products.  
Fixed Audio Outputs: Connect  
these jacks to the CD audio inputs  
of your receiver, surround processor  
or preamplifier.  
¢ Remote Control Input:  
Connect the output of a remote  
infrared sensor or the remote control  
output of another compatible  
Harman Kardon product. This will  
§ AC Power Cord: Connect this  
plug to an AC outlet. If the outlet is  
switch controlled, make certain that  
the switch is in the ON position.  
 
Remote Control Functions  
7
ba  
aPower Off  
bPower On  
cNumeric Controls  
dProgram Button  
eClear Button  
fRepeat 1/All Button  
gRepeat A–B Button  
hSkip Buttons  
iSearch Buttons  
jPlay Button  
ON OFF  
DISPLAY  
q
1
4
7
0
2
5
8
3
6
9
c
kStop  
lPause Button  
mRandom Button  
nTime Button  
oCheck Button  
pIntro Button  
INTRO  
p
o
PROGRAM CLEAR  
CHECK  
TIME  
d
n
e
Repeat  
qDisplay Button  
1/ALL  
A-B  
RANDOM  
f
h
m
k
g
l
SKIP  
SEARCH  
j
i
HD 720  
 
Remote Control Functions  
8
aPower Off: Press this button to  
eClear Button: Press this button  
to remove tracks from a programmed  
sequence. Each press of the button  
will remove one track, starting with  
the last track programmed to play.  
(See page 13 for complete informa-  
tion on programming the HD720.)  
kStop: Press this button to stop the  
put the unit in the Standby mode.  
disc currently being played.  
bPower On: Press this button to  
turn on the HD720. Note that in  
order for the Power On button to  
operate, the front panel Power  
Switch 1must be pressed, and the  
Status Mode Indicator 2should  
glow amber. (See page 11 for more  
information.)  
lPause Button: Press this button  
once to momentarily stop a disc.  
When the button is pressed again,  
the disc will resume play at the point  
it was stopped.  
fRepeat 1/All Button: Press this  
button once so that the REPEAT and  
ALL indicators are illuminated to  
repeat all tracks on the disc. Press  
the button a second time to repeat  
only the track that is currently being  
played, and note that the REPEAT  
and ONE indicators will light in the  
Information Display. (See page 14  
for more information on Repeat Play.)  
mRandom Button: Press this  
button to put a disc into play, and to  
have all of the tracks played in a  
random order. (See page 10 for  
more information.)  
cNumeric Controls: Press these  
buttons to select a specific track on a  
disc. The unit will immediately search  
for the track and begin to play it. For  
tracks 1 through 9 on a disc, you  
need only press the desired number.  
For tracks 10 and above, the second  
digit of the number must be entered  
within two seconds of the first digit.  
(See page 10 for more information.)  
These buttons are also used to enter  
track numbers into the memory for  
pre-programmed play lists. (See  
page 13 for complete information on  
programming the HD720.)  
nTime Button: Press this button  
to select the time display. In normal  
operation, the display will show the  
running time of a track being played.  
Press the button once to check the  
time remaining for the track in play.  
Press the button a third time to view  
the total play time remaining for the  
disc in play.  
gRepeat A–B Button: Press this  
button to repeat a segment of the  
disc. Press the button once to mark  
the start of the portion to be repeated.  
Press it again at the end of the desired  
sequence. The marked passage will  
not play continuously until the Stop  
button kis pressed. (See page 14  
for more information on Repeat Play.)  
oCheck Button: Press this button  
to check the order of tracks pro-  
grammed into the HD720’s memory.  
(See page 13 for complete information  
on programming the HD720.)  
dProgram Button: Press this  
button to begin the process of pro-  
gramming the HD720 to play the  
tracks on a disc in a specific order.  
Once the button is pressed, enter  
each of the desired track numbers in  
quick succession using the Numeric  
Controls c. When you have  
entered the tracks to be played,  
press the Play button jto begin  
the programmed sequence. (See  
page 13 for complete information  
on programming the HD720.)  
hSkip Buttons: Press one of  
these buttons to move to the next  
track  
·
, or to move back to the  
pIntro Button: Press this button  
to put the HD720 in the Intro Scan  
mode. When you press the button,  
the unit will play the first 15 seconds  
of each track on the disc, and then  
move to the next track. Press the but-  
ton again to defeat the function and  
continue full play of the current track.  
(See page 12 for more information.)  
previous track  
.
iSearch Buttons: Press one of  
these buttons to search forward  
or backwards  
through a  
disc to locate a particular portion of  
the selection being played.  
jPlay Button: Press this button to  
start the playback of a CD. If the CD  
drawer is open, pressing this button  
will automatically close the drawer.  
qDisplay Button: Press this  
button once to dim the front panel  
display to half brightness. Press it  
again to turn the display lights off  
completely. Another press will return  
the display to normal brightness.  
 
Installation  
9
To prevent possible damage to your  
speakers and other components in your  
audio system, it is important that ALL  
components, including the HD720 and  
receivers are turned off and unplugged  
from their AC power source when  
installing any new component.  
NOTE: When replacing batteries it is  
always a good idea to replace both at the  
same time. When the unit will not be  
used for an extended period of time, it is  
also a good idea to remove the batteries  
so that the potential for corrosion or  
damage is avoided.  
Connecting the HD720 to your audio  
system is simple. Using standard RCA-  
to-RCA interconnect cords, connect the  
left and right Fixed Audio Output  
jacks on the rear panel to the CD  
input jacks on your receiver, surround  
processor or preamplifier.  
Connect the power to a non-switched AC  
wall outlet, or to the accessory outlet on  
the rear of another audio device in your  
system and you are ready to go!  
NOTE: When using the accessory outlet  
on another product to power the HD720  
make certain that it has the ability to  
power a device that draws at least 14  
watts of current in addition to the  
requirements of other devices that may  
be plugged into the accessory outlets. If  
you use a “switched” outlet, it is impor-  
tant to remember that the host product  
must be turned on in order for the  
HD720 to operate.  
If your system includes an optional,  
external digital-to-analog converter, or  
if you are using a receiver or other pro-  
cessor that has the capability to decode  
PCM digital input signals, connect the  
Coaxial Digital Output jack ¡ to  
the Datastream Digital input on the  
decoder. Make certain to use a coaxial-  
style interconnect cable, as standard  
audio cables will not perform as well.  
Install the two AA batteries supplied with  
the HD720’s remote by turning the remote  
over so that you are holding the bottom  
side up. Press lightly on the embossed  
arrow on the cover, and gently slide the  
cover towards you in the direction of the  
arrow. Insert the batteries inside the com-  
partment, being careful to follow the +  
and polarity indications at the bottom of  
the compartment. Replace the cover by  
placing it on the remote and sliding it  
back towards the top of the remote.  
 
Operation  
10  
After a brief pause, the Information  
Display will show the total number of  
tracks on a disc and the total running  
time of the disc. The number of tracks  
will be shown in a large number within  
the display, and all of the available tracks  
will light in the smaller boxed number  
indicators at the bottom of the display.  
To play all of the tracks on the disc in  
order, press the Play button 4j. A  
play indication will appear in the  
Information Display *.  
Normal Play  
To play a disc, first turn the HD720 on  
using the Main Power Switch 1. If the  
unit has previously been turned on with  
the Main Power Switch, but then turned  
off using the remote control, the Status  
Mode Indicator 2will glow amber. In  
that case, the HD720 may be turned on  
using the Power On button bon the  
remote control.  
To play all of the tracks in random order,  
press the Random button #m. The  
RANDOM indicator will light when that  
mode is in use.  
TRACK  
MIN  
SEC  
You may also select a specific track  
directly by entering the track number  
via the Numeric Controls c.  
Simply enter the track number by press-  
ing the buttons that correspond to the  
desired track and the unit will automati-  
cally find it and begin play. Note that  
when a two-digit track number is being  
entered, the second digit of the number  
must be pressed within two seconds of the  
first digit.  
TOTAL  
1
2
3
4
5
6
7
8
9
10 11 12  
To load a disc, first press the Open/Close  
button &, taking care to make certain  
that the space in front of the drawer is not NOTE: When there are more than 20  
obstructed. Note that if the drawer is  
tracks on a disc, the OVER indicator will  
blocked when attempting to open it, it will light in the bottom right corner of the  
automatically close within five seconds to display.  
protect the mechanism.  
NOTE: If a disc with CD-ROM data or  
Load the disc in the tray with the printed  
(label) side facing up. Make certain that  
the disc is centered in the tray. Either 5"  
or 3" discs may be used. When a 3" disc  
is played, it should be carefully centered  
within the smaller ridges inside the  
cassette drawer.  
other information that is not compatible  
with a CD player is used, the display will  
indicate NO AUDIO.  
When a mixed CD Audio and CD-ROM  
disc is played, the HD720 will automati-  
cally bypass the data portion of the disc  
and search for the CD Audio section.  
Labeled  
Surface  
To retract the drawer back into the  
player after loading a disc, press the  
Open/Close button &.  
 
Operation  
11  
While the disc is playing, the track being  
played will show both as a large number  
in the middle of the display and as a  
smaller, flashing number at the bottom  
of the display. The elapsed time of the  
track being played will also appear in the  
display. As a disc plays, the track num-  
bers will change, and the time will reset  
Note that the unit is not removed from  
AC main power when it is in the Standby  
mode. During long periods of inactivity,  
it is recommended that the Main Power  
Switch 1be used to turn the unit off.  
The Status Mode indicator will not be lit  
when the unit is totally turned off.  
Remember to turn the unit back on with  
the Main Power Switch 1in order to  
use the remote control.  
Display Dim  
In some instances, it may be desirable to  
reduce the brightness of the display or to  
turn it off completely. To do this, press  
the Display button 9qonce to dim  
the display to half brightness. Press it  
again to turn the display off. A third press  
will return the display to normal level.  
to  
at the start of each new track.  
To momentarily pause the play of a disc,  
Time Display  
press the Pause button 6l. Note  
Disc-Handling Notes  
±
The HD720’s time display is capable of  
showing a wide range of information  
about a CD.  
that a Pause indication will appear in  
When loading or unloading discs, it is  
best to hold them by the edges.  
the display to remind you that the disc is  
paused. Press either the Play button 4  
jor the Pause button 6lto  
resume normal play.  
While Compact Discs are very reliable,  
rough handling may damage them. Avoid  
scratching the bottom (non-printed) side  
of discs, or any handling which will leave  
fingerprints.  
In normal operation the display will  
show the total running time of a CD after  
the disc is first put in the unit. When the  
disc is played, the display will show the  
running time of a track in play. Each  
time the track changes, the time display  
To stop the disc, press the Stop/Clear  
button 5k. When the Stop button is  
pressed the display again will show the  
total number of tracks and total running  
time of the disc.  
will reset to  
increase again as the disc plays.  
and begin to  
To avoid damage to the disc and player,  
always seat discs so that they are centered  
in the tray.  
To remove a disc from the player, press  
the Open/Close button &. To prevent  
dirt and dust from entering the unit, do  
not leave the disc tray open.  
To view the time remaining on an indi-  
vidual track, press the Time button )  
nonce. The display will now show the  
time left in the track in play, and the  
REMAIN indicator will light next to the  
time display as a reminder of the dis-  
play’s status.  
Do not lift the player while the disc tray  
is opening or closing, as this may cause  
the disc to unseat from the tray and  
possibly jam.  
To place the unit in a Standby mode,  
press the Power Off button aon  
the remote. The Status Mode  
Headphone Listening  
Indicator 2will glow amber, indicat-  
ing that the unit is off, but ready to  
accept a Power On command from the  
remote. If the disc drawer is open, it will  
automatically close when the unit is  
placed in the Standby mode. This ensures  
that the unit will not be harmed from  
dust, dirt or inadvertent damage to the  
drawer mechanism.  
You may listen to the output of the  
HD720 through headphones by plugging  
a set of standard headphones with a  
headphone plug into the front panel  
Headphones Jack ^. The volume of  
the headphone output may be adjusted  
with the Headphones Level knob  
%. Note that changing the headphone  
level will not change the volume for the  
main audio output. This is a fixed out-  
put, and it is changed using the volume  
control on your receiver, preamplifier or  
surround processor.  
To view the total time remaining to play  
on the disc, press the time button twice.  
The REMAIN and TOTAL indicators will  
light to remind you of the function in  
use.  
1
4"  
NOTE: When a disc contains more than  
thirty (30) tracks, the time display may  
read “– – : – –”. This is normal and  
it does not indicate any problem with the  
disc or the HD720.  
 
Program Search  
12  
The HD720 is equipped with a variety of  
functions that make it easy to search for  
specific parts of any CD.  
Skip  
Intro Search  
To move from one track on the disc to  
another, press one of the Skip buttons  
8h. Pressing the Forward Skip  
This feature lets you locate a track by  
playing the first 15 seconds of each track.  
When the Intro button pis pressed,  
the unit will play only 15 seconds of each  
track, and then automatically move to  
the next track. When you have reached a  
track that you wish to listen to in its  
entirety, press the Intro button again to  
resume normal operation. When the  
Intro feature is activated, the INTRO  
indicator will illuminate in the  
Search  
button  
fl· will move you forwards  
If you wish to quickly scan through a  
disc to locate a particular passage or  
program, press the Search buttons  
7i. The Forward Search button  
through the disc, one track at a time,  
while pressing the Reverse Skip  
button  
track at a time.  
‡fi will move you back one  
plays the disc forward in high  
speed, while the Reverse Search  
button plays the disc backwards in  
The Skip buttons may be used when  
the HD720 is either playing or stopped.  
If the unit is stopped, the Skip buttons  
may be used to locate the first track to  
be played. The Play button 4jmust  
be pressed to begin play. If the Skip but-  
tons are used while the unit is already  
playing, the audio output will stop while  
the new track is located, and play will  
automatically resume after the Skip  
button is released.  
high speed. When the desired part of the  
disc is heard, release the Search button  
to resume normal play speed.  
Information Display *to remind  
you that Intro Search is in use.  
 
Programmed Play Operation  
13  
The HD720’s advanced programming  
capability enables you to preset the order  
in which tracks play, to repeat one track  
or all tracks, and to repeat any portion of  
a disc without regard to track numbers.  
The second display will show the total  
cumulative running time of all tracks  
entered along with the last track number  
programmed. After 5 seconds, only this  
display will appear if no other track  
number is entered.  
Checking Program Contents  
To check the contents of a program, press  
the Check button @o. Each press of  
the button will show the actual track  
number, the position the track occupies  
in memory (e.g., second track to play)  
and the cumulative time for all tracks  
that have been programmed up to the  
one that is indicated.  
Programmed Play  
TRACK  
MIN  
SEC  
To program the order in which the  
tracks on a disc play, begin by pressing  
the Program button !d. Note that  
the PROGRAM indicator will light in  
the Information Display *. The total  
number of tracks and total disc playing  
time is also displayed.  
TOTAL  
PROGRAM  
3
4
6
7
9
Clearing Program Tracks  
As each track is added to the program  
list, its number will illuminate at the  
bottom of the display.  
To clear one or all tracks from a program,  
first press the Stop button 5k.  
When you have entered all the tracks  
that you wish to program, press the Play  
button 4jto begin playback of the  
programmed sequence. The tracks will  
now play back in the order in which they  
were programmed.  
You may now begin to enter the tracks in  
the order in which you wish to have  
them play. When entering track numbers  
from the remote control, simply enter the  
numbers using the Numeric Controls  
c. Be certain to enter the second digit  
of track numbers 10 and above within  
two seconds of the first number. Tracks  
may also be entered from the front panel  
or remote by pressing the Skip buttons  
8huntil the desired track number  
appears. Press the Program button !  
dto enter the track to memory, and  
then proceed to select the next track you  
wish to program.  
Pressing the Clear button eon the  
remote, or the Stop/Clear button 5on  
the front panel will remove tracks from  
the program sequence one at a time,  
starting with the last track programmed.  
For example, if track #6 was the last  
selection in the program order, it will be  
the first to be deleted from the program,  
regardless of how many tracks are on the  
disc, and how many individual tracks  
have been programmed.  
When the complete set of programmed  
tracks has played, the unit will stop.  
The program will remain and may be  
started again by pressing the Play button  
4j. The program will remain in the  
player’s memory as long as the disc is  
not removed.  
To clear all tracks at once, press and  
hold either the Stop/Clear button 5  
on the front panel, or the Clear button  
eon the remote until the PROGRAM  
indicator goes out and the display of the  
disc’s total running time and number of  
tracks appear. You may also clear the  
total contents of a track programming  
sequence by pressing the Open/Close  
button &, or by turning the unit off.  
NOTE: Once the disc drawer is opened,  
the program information is lost, and  
must be re-entered even if the same disc  
is placed back in the machine.  
As tracks are entered, two displays will  
appear in the display. The first will indi-  
cate the total number of tracks that have  
been programmed along with the last  
track number entered.  
TRACK  
PROGRAM  
3
4
6
7
9
 
Programmed Play Operation  
14  
To remove tracks from the middle of a  
previously programmed sequence, press  
the Check @obutton, and then  
press the Skip buttons 8huntil the  
desired track number appears in the dis-  
play. Press the Clear eor Stop/Clear  
5 button to remove the track from the  
sequence.  
Auto Play  
Repeat One  
To repeat the track in play, press the  
Repeat 1/All button for the Repeat  
button $twice. The REPEAT and ONE  
indicators will light and the track will  
continue to play over and over again  
continuously. If the track is changed by  
pressing the Skip buttons 8hwhile  
the Repeat function is in use, the newly  
selected track will be repeated. To stop  
the repeat play, press the Stop button 5  
kor press the Repeat button $f  
until the REPEAT indicator goes out.  
The HD720 may be programmed to auto-  
matically go into the play mode when  
the unit is turned on.  
To use this feature, insert a disc in the  
drawer and close the drawer as explained  
on page 10. Next, locate the Autoplay  
switch £ on the rear panel. Place the  
switch in the ON position and then either  
turn the unit off by pressing the front  
panel Power Switch 1until the  
Statue Mode Indicator 2goes dark,  
or place the unit in the Standby mode by  
pressing the Power Off button aon the  
remote.  
Repeat Programmed Play  
The HD720’s programming system  
enables you to repeat either a single  
track, the entire disc or a specially  
programmed passage that you select.  
Repeat A–B  
The HD720 may be programmed to  
repeat any section within a track, or a  
complete passage or program that  
includes material in a series of tracks.  
Repeat All  
To repeat all of the tracks on a disc, press  
the Repeat 1/All button for the  
Repeat button $once until the  
REPEAT and ALL indicators light up.  
When you see these indicators, the entire  
disc will play through to the end, and  
then start again from the beginning. The  
disc will play continually until the Stop  
button 5kis pressed.  
When the HD720 is turned on using  
either the Power Switch 1or the  
Power On button bthe unit will  
automatically go into the Play mode and  
the disc will play through from the first  
track to the last.  
To program the unit for A–B play, first  
locate the point on the disc where you  
wish to begin the repeated section. At that  
point, press the Repeat A–B button  
g. The REPEAT and A indicators will  
light in the Information Display to  
show that the program process has start-  
ed. Let the disc continue to play until you  
have reached the end of the section to be  
repeated. When the end point is reached,  
press the Repeat A–B button g  
again. Note that the REPEAT and A–B  
indicators will now be illuminated.  
To return the unit to normal operation,  
put the Autoplay switch £ in the OFF  
position.  
Once the Repeat A–B button gis  
pressed for the second time to complete  
the programming, the HD720 will auto-  
matically go to the start of the selected  
passage and continue to play the section  
over and over.  
To resume normal play press the Repeat  
A–B button gagain. The REPEAT and  
A–B indicators will go out, and the rest of  
the disc will play normally.  
 
Troubleshooting  
15  
Troubleshooting Guide  
SYMPTOM  
CAUSE  
SOLUTION  
No lights on Front Panel  
• No AC power  
• Make certain AC power cord is plugged into  
a live outlet.  
Remote does not appear  
to operate  
• Main Power Switch turned off  
• Weak batteries  
• Blocked sensor  
• Turn on Main Power Switch.  
• Install fresh batteries, observing polarity indications.  
• Remove obstructions from the front panel sensor or  
connect a remote sensor to the Remote In jack  
on the rear panel.  
Front panel lights, but CD  
does not play  
• Disc upside down  
• Reload disc with label side facing up.  
Play indicator lights, but  
no sound is heard  
•Poor connections  
• Make certain connections are secure and made  
to the correct (e.g., CD) input.  
• Select CD source on receiver or preamp.  
• Wrong source connected  
Sound skips or stutters  
during play  
• Disc may be damaged  
• Surface vibrations  
• Try another disc.  
• Isolate the unit from vibration by placing it on a  
firm surface or move it further away from speakers.  
Sound is continually distorted  
• Incorrect input  
• Make certain that the HD720 is connected to a line-  
level audio input, NOT a digital audio or phono input.  
 
Technical Specifications  
16  
Signal Format  
Sampling Frequency  
D/A Conversion  
Oversampling  
44.1kHz  
1-bit, Multilevel Delta-Sigma Conversion  
8 times  
Discrete Analog Output Section  
Error Correction  
CIRC System  
8Hz to 20kHz ±1dB  
0.006%  
Frequency Response  
Total Harmonic Distortion (THD)  
Dynamic Range  
96dB  
Signal-to-Noise Ratio  
Channel Separation  
Line Output Level  
105dB  
92dB  
2.0V RMS  
General  
Power Requirement  
Power Consumption  
AC 120V/60Hz  
12 Watts  
Dimensions  
Width  
17.3" (440 mm)  
4.3" (110 mm)  
9.1" (232 mm)  
Height  
Depth  
Weight  
9.3 lbs (4.2 kg)  
All features and specifications are subject to change without notice.  
 
HD 720  
Power  
Play  
Sto  
Printed in China  
Part #1111-HD720  
CEC6P10068030  
 

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