McIntosh D751 User manual

McIntosh Laboratory, Inc. 2 Chambers Street Binghamton, New York 13903-2699 Phone: [phone] FAX: [phone]
OWNERS
MANUAL
MCD751
MCD751 Compact Disc Transport

2
Thank You.......................................................................... 2
Please Take a Moment ....................................................... 2
Technical Support .............................................................. 2
Customer Service............................................................... 2
Table of Contents ............................................................... 2
Safety Instructions ............................................................. 3
Introduction ....................................................................... 4
Performance Features ........................................................ 4
Installation ......................................................................... 5
Rear Panel Connections and Switch .................................. 6
How to Connect the MCD751 ........................................... 7
Front Panel Controls, Displays, Push-Buttons,
and Switch ......................................................................... 8
How to Operate the MCD751............................................ 9
Remote Control Push-Buttons ......................................... 12
How to Operate by Remote Control ................................ 13
Specifications .................................................................. 14
Packing Instruction .......................................................... 15
NOTES:
1. The following Connecting Cable is available from the
McIntosh Parts Department:
Data and Power Control Cable Part No. 170-202
Six foot, shielded 2 conductor, with 1/8 inch stereo mini
phone plugs on each end.
2. For additional connection information, refer to the owners
manual(s) for any component(s) connected to the MCD751
Compact Disc Transport.
3. The MCD751 Laser Pickup assembly is protected from
shocks and movement during transit by a transport locking
mechanism. When the mechanism is in the LOCK position,
the MCD751 Disc Tray will still open or close, however, the
Laser assembly will not move and a disc will not play until
the Locking mechanism is moved to the FREE position.
Access the mechanism through a clearance hole in the
bottom panel of the player, near to the decal as illustrated
below and adjust the mechanism with the supplied tool or a
small screwdriver.
Thank You, Please Take A Moment,
Customer Service and Table of Contents
Thank You
Technical Assistance
Customer Service
Copyright 1999 by McIntosh Laboratory, Inc.
Please Take A Moment
The serial number, purchase date and McIntosh dealer
name are important to you for possible insurance claim or
future service. The spaces below have been provided for
you to record that information:
Your decision to own this McIntosh MCD751 Compact
Disc Transport ranks you at the very top among discrimi-
nating music listeners. You now have The Best. The
McIntosh dedication to Quality, is assurance that you
will receive many years of musical enjoyment from this
unit.
Please take a short time to read the information in this
manual. We want you to be as familiar as possible with all
the features and functions of your new McIntosh.
Serial Number:
Purchase Date:
Dealer Name:
If at any time you have questions about your McIntosh
product, contact your McIntosh dealer who is familiar with
your McIntosh equipment and any other brands that may
be part of your system. If you or your dealer wish addi-
tional help concerning a suspected problem, you can re-
ceive technical assistance for all McIntosh products at:
McIntosh Sales Corporation
661 W. Redondo Beach Blvd.
Gardena, CA 90247
Phone: [phone]
Fax: [phone]
If it is determined that your McIntosh product is in need of
repair, you can return it to your dealer. You can also return
it to the McIntosh Laboratory Service Repair department.
For assistance on factory repair return procedure, contact
the McIntosh Repair Department at:
McIntosh Laboratory, Inc.
2 Chambers Street
Binghamton, New York 13903
Phone: [phone]
Fax: [phone]
Table of Contents
Supplied Tool
Decal

3
IMPORTANT SAFETY
INSTRUCTIONS!
PLEASE READ THEM BEFORE
OPERATING THIS EQUIPMENT.
Safety Instructions
WARNING SHOCK HAZARD -
DO NOT OPEN.
The lightning flash with arrowhead, within an equilateral
triangle, is intended to alert the user to the presence of
uninsulated dangerous voltage within the products
enclosure that may be of sufficient magnitude to consti-
tute a risk of electric shock to persons.
AVIS RISQUE DE CHOC -
NE PAS OUVRIR.
The exclamation point within an equilateral triangle is
intended to alert the user to the presence of important
operating and maintenance (servicing) instructions in
the literature accompanying the appliance.
NO USER-SERVICEABLE
PARTS INSIDE. REFER
SERVICING TO
QUALIFIED PERSONNEL
To prevent the risk of electric shock, do not remove
cover (or back). No user serviceable parts inside. Refer
servicing to qualified personnel.
General:
1. Read all the safety and operating instructions, con-
tained in this owners manual, before operating this
equipment.
2. Retain this owners manual for future reference about
safety and operating instructions.
3. Adhere to all warnings and operating instructions.
4. Follow all operating and use instructions.
5. Warning: To reduce risk of fire or electrical shock,
do not expose this equipment to rain or moisture.
This unit is capable of producing high sound pres-
sure levels. Continued exposure to high sound pres-
sure levels can cause permanent hearing impair-
ment or loss. User caution is advised and ear protec-
tion is recommended when playing at high volumes.
6. Caution: to prevent electrical shock do not use this
(polarized) plug with an extension cord, receptacle
or other outlet unless the blades can be fully in-
serted to prevent blade exposure.
Attention: pour pevenir les chocs elecriques pas
utiliser cette fiche polarisee avec un prolongateur,
une prise de courant ou un autre sortie de courant,
sauf si les lames peuvent etre inserees afond ans en
laisser aucune partie a decouvert.
7. For added protection for this product during a lightning
storm, or when it is left unattended and unused for long
periods of time, unplug it from the wall outlet. This
will prevent damage to the product due to lightning or
power line surges.
8. Do not use attachments not recommended in this
owners manual as they may cause hazards.
Installation:
9. Locate the equipment for proper ventilation. For ex-
ample, the equipment should not be placed on a bed,
sofa, rug, or similar surface that may block ventilation
openings; or, placed in a built-in installation, such as a
bookcase or cabinet, that may impede the flow of air
through the ventilation openings.
10. Locate the equipment away from heat sources such as
radiators, heat registers, stoves, or other appliance (in-
cluding amplifiers) that produce heat.
11. Mount the equipment in a wall or cabinet only as de-
scribed in this owners manual.
12. Do not use this equipment near water; for example,
near a bathtub, washbowl, kitchen sink, laundry tub, in
a wet basement or near a swimming pool, etc.
13. Do not place this product on an unstable cart, stand,
tripod, bracket, or table. The equipment may fall, caus-
ing serious injury to a person, and serious damage to
the product.
Connection:
14. Connect this equipment only to the type of AC power
source as marked on the unit.
15. Route AC power cords so that they are not likely to be
walked on or pinched by items placed upon or against
them, paying particular attention to cords at plugs, con-
venience receptacles, and the point where they exit
from the instrument.
16. Do not defeat the inherent design features of the polar-
ized plug. Non-polarized line cord adapters will defeat
the safety provided by the polarized AC plug. If the
plug should fail to fit, contact your electrician to re-
place your obsolete outlet. Do not defeat the safety
purpose of the grounding-type plug.

4
·Precision Transport Mechanism
Included is a Vibration-Free Rigid Disc Clamping System
consisting of a CD size die-cast, high density aluminum
overhead turntable with a high precision helicoid clamp.
The motor bridge and clamping system are made of high
molecular material containing polyester fibers and ceramic
powders.
·Digital Servo Control Motors
The Brushless Hall Effect Drive Spindle Motor for disc ro-
tation coupled with the Linear Laser Assembly Motor to-
gether helps boost clarity and maintain exacting levels of
digital sound reproduction.
·Remote Control
The Remote Control is included that will allow complete
control of major functions.
·Remote Power and Data Control
Remote Power Control In/Out allows the MCD751 to turn
on/off with a McIntosh Control Center. The Data In/Out for
remote control operation from another McIntosh compo-
nent.
·Special Power Supply
A fully regulated power supply with a special power trans-
former ensures stable noise free operation even though the
power line should vary.
Safety Instructions cont,
Introduction and Performance Features
Introduction
17. Do not overload wall outlets, extension cords or inte-
gral convenience receptacles as this can result in a risk
of fire or electric shock.
Care of Equipment:
18. Clean the instrument by dusting with a dry cloth. Un-
plug this equipment from the wall outlet and clean the
panel with a cloth moistened with a window cleaner.
Do not use liquid cleaners or aerosol cleaners.
19. Do not permit objects of any kind to be pushed and/or
fall into the equipment through enclosure openings.
Never spill liquids into the equipment through enclo-
sure openings.
20. Unplug the power cord from the AC power outlet
when left unused for a long period of time.
Repair of Equipment:
21. Unplug this equipment from the wall outlet and refer
servicing to a qualified service personnel under the fol-
lowing conditions:
A. The AC power cord or the plug has been damaged.
B. Objects have fallen, or liquid has been spilled into
the equipment.
C. The equipment has been exposed to rain or water.
D. The equipment does not operate normally by fol-
lowing the operating instructions contained within
this owners manual. Adjust only those controls
that are covered by the operating instructions, as an
improper adjustment of other controls may result
in damage and will often require extensive work by
a qualified technician to restore the product to its
normal operation.
E. The equipment has been dropped or damaged in any
way.
F. The equipment exhibits a distinct change in perfor-
mance - this indicates a need for service.
22. Do not attempt to service beyond that described in the
operating instructions. All other service should be re-
ferred to qualified service personnel.
23. When replacement parts are required, be sure the ser-
vice technician has used replacement parts specified by
McIntosh or have the same characteristics as the origi-
nal part. Unauthorized substitutions may result in fire,
electric shock, or other hazards.
24. Upon completion of any service or repairs to this prod-
uct, ask the service technician to perform safety checks
to determine that the product is in proper operating
condition.
Performance Features
The new McIntosh MCD751 Compact Disc Transport of-
fers the latest concepts in mechanical excellence for pre-
cise CD reproduction. Combine the MCD751 with a McIn-
tosh MDA700 D/A Converter, Decoder or Control Center
with a digital input and you will enjoy reproduction of your
favorite Compact Discs with unparalleled sonic beauty and
accuracy.

5
Installation
The MCD751 can be placed upright on a table or shelf,
standing on its four feet. It also can be custom installed in a
piece of furniture or cabinet of your choice. The required
panel cutout, ventilation cutout and unit dimensions are
shown.
Always provide adequate ventilation for your MCD751.
Cool operation ensures the longest possible operating life
for any electronic instrument. Do not install the MCD751
directly above a heat generating component such as a high
powered amplifier. If all the components are installed in a
single cabinet, a quiet running ventilation fan can be a defi-
nite asset in maintaining all the system components at the
coolest possible operating temperature.
A custom cabinet installation should provide the follow-
ing minimum spacing dimensions for cool operation. Allow
at least 2 inches (5.1cm) above the unit and 1 inch
(2.54cm) on each side of the control center, so that airflow
is not obstructed. Allow 16 inches (40.64cm) depth behind
the mounting panel, which includes clearance for connec-
tors. Allow 3/4 inch (1.9cm) in front of the mounting panel
for clearance. Be sure to cut out a ventilation hole in the
mounting shelf according to the dimensions in the drawing.
Front View of the MCD751
custom installed
Side View of the MCD751
custom installed
Bottom View of the MCD751
custom installed
Installation
17-1/2"
444mm
17-1/16"
433.4mm
7/32"
5.3mm
Support Shelf
Outline of Front Panel
Edge of Cutout
Panel Height
5-5/16"
134.9mm
4-7/8"
123.8mm
1/4"
6mm
3/16"
5.1mm
End Caps
5-3/8"
136.9mm
Bottom of Cutout
and Top of Support
Shelf Must Coincide
Mounting Surface
Outline of Unit
(Side View)
Support Shelf
Mounting Bracket at Both Sides of the Rear Panel.
Fasten with 6-32 x 3/8 Machine Screw and Washer to Chassis.
Fasten with 6 x 1/2 Wood Screw and Washer to Support Shelf.
6"
15"
9"
Mounting Surface
Cut Out Center
for Ventilation
(Bottom View)
(Front View)

6
MCD751 Rear Panel
Connections
Connect the MCD751 power
cord to a live AC outlet. Refer
to information on the back
panel of your MCD751 to de-
termine the correct voltage for
your unit
MCD751 Rear Panel Connections
POWER CONTROL IN re-
ceives turn on signals from a
McIntosh component and
POWER CONTROL OUT
sends turn on signals on to an-
other McIntosh Component
DIGITAL OPTICAL
OUTPUT send signals to
an external D/A Converter
or Control Center with a
D/A Converter
DATA IN receives operating
data from a McIntosh Control
Center or D/A Converter and
DATA OUT sends operating
data to a McIntosh component
DIGITAL COAXIAL
OUTPUT send signals to
an external D/A Con-
verter or Control Center
with a D/A Converter

7
McIntosh D/A Converter
How to Connect the MCD751
How to Connect the MCD751
McIntosh Control Center
To AC Outlet
1. Connect the MCD751 power cord to a live AC outlet.
2. Connect a Power Control Cable from the POWER
CONTROL OUT of a McIntosh MDA700 D/A Con-
verter or Control Center to the MCD751 POWER
CONTROL IN.
3. Connect a Data Cable from the MCD751 DATA IN
Jack to a DATA OUT Jack on a McIntosh MDA700 D/
A Converter or Control Center.
4. Remove the protective cap from the MCD751 OPTI-
CAL DIGITAL OUT connector.
5. Connect an Optical Cable from the MCD751 OPTI-
CAL DIGITAL OUT to the OPTICAL DIGITAL IN-
PUT of a McIntosh MDA700 D/A Converter, Decoder
or Control Center.
Note: An optional connecting method is to use a coaxial cable
from the MCD751 Coaxial Output to the Coaxial
Digital Input of a McIntosh MDA700 D/A Converter,
Decoder or Control Center.

8
MCD751 Front Panel Display,
Push-Buttons and Switch
POWER
switch turns
all AC power
completely
ON or OFF
MCD751 Front Panel Display, Push-Buttons
and Switch
Opens the disc
tray for loading
or unloading
discs
Stops disc
play
Use to pause
during play
Starts disc play
Disc Tray opens to load
and unload a disc
Move rapidly
backward
through a disc
during play
Move rapidly
forward
through a disc
during play
Move back
one track at
a time
Move forward
one track at a
time
Standby Power
On Indicator
Indicates Time, Track
and different Modes of
Operation
IR Sensor receives
commands from a
remote control
Indicates when the disc tray
is opening or closing and
when a disc is in the tray
Indicates when the
Pause Mode is active

9
How to Operate the MCD751
How to Operate the MCD751
Power On
The MCD751 can be turned on manually with the front
panel POWER SWITCH. When a Power Control cable is
connected to a McIntosh DA Converter or Control Center,
the MCD751 POWER SWITCH can be left on, and the
player will turn on automatically whenever the other com-
ponent turns on. Refer to front panel drawing on the oppo-
site page.
How to Load a Disc
1. Press the OPEN/CLOSE pushbutton. The Red LED
above the pushbutton will start flashing and the disc
tray will slide out.
The front panel
display will indi-
cate OPEN. Re-
fer to Figure 1.
2. Place a disc within the guides, on the tray with the la-
bel facing up.
Note: There is a recessed area on the disc tray to
accommodate 3 inch (7.6cm) mini discs.
3. Press the OPEN/CLOSE pushbutton a second time.
The Red LED above the pushbutton will start flashing,
the display will indicate CLOS and the disc tray will
close. The LED
will stop flashing
and stay on as
long as a disc is in
the tray or playing. Refer to Figure 2. After the disc
tray closes, for a few seconds the Time display will in-
dicate the total
number of tracks
and total play
time of the disc
just inserted. Re-
fer to Figure 3.
Disc Play Modes
Listed below are six different modes for playing all or part
of a Compact Disc:
Standard Play
1. Press the PLAY pushbutton and play will start from the
first track on the disc.
Note: After a disc is inserted in the tray, you can also press
just the Play pushbutton to both close the disc tray and
start playing the disc.
Pause Play
1. Open the tray and load a disc.
2. Press the PAUSE pushbutton.
3. The tray will close, the player will enter Pause Mode.
4. When the Track Time Display appears and indicates
(0m00s), the player will be ready to immediately start
playing Track 1 when either the PAUSE or PLAY
pushbutton is pressed.
Direct Access Play
1. Open the disc tray and load a disc.
2. Press a NUMBER pushbutton on the Remote Control
corresponding to the desired disc track.
3. The disc tray will close and play will start from the
specified track without need for pressing PLAY.
4. For track numbers above 9, press the +10 pushbutton
first and then required number. The +10 pushbutton
must be pressed once for each multiple of ten track
numbers. For example, for track number 25, press +10
twice and then 5.
Single Track Play
1. Press the SINGLE pushbutton on the Remote. The
Single Indicator
on the front
panel display
will light. Refer
to Figure 4.
2. Press the NUMBER pushbutton(s) on the Remote that
corresponds to the desired disc track you wish to play.
3. The selected track will play once, and then the
MCD751 will Stop.
4. To play another single track, repeat Step 2.
5. To cancel the Single Mode, press the SINGLE
pushbutton again.
Preselected Track Play
Up to 20 specific tracks on a disc can be selected to play in
any desired order.
1. Load a disc in the player.
2. Press the PGM pushbutton on the Remote. Refer to
Figure 5.
3. Press the NUM-
BER
pushbutton(s)
on the Remote
to select the desired track(s) to play.
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5

10
How to Operate the MCD751,
cont
4. If you wish to change a selection, press the CLEAR
pushbutton and then the number for the new track se-
lection.
5. Press the REVIEW pushbutton to review the details of
each track selected for playback.
6. Press the PLAY pushbutton and each of the tracks will
play in the order you selected.
Note: Track selection is performed when the player is in Stop
Mode. The track selection memory will be retained
when all tracks have played or when the STOP
pushbutton is pressed. To cancel the track selection
memory, press the STOP pushbutton twice, press the
PGM pushbutton or open and close the disc tray.
Delete Play
You can delete any tracks on a disc that you do not wish to
listen to.
1. Load a disc into the tray.
2. Press the DELETE pushbutton. Refer to Figure 6.
3. Press the
NUMBER
pushbutton (s)
on the Remote
to select the
tracks you wish to delete.
4. If you wish to change a selection, press the CLEAR
pushbutton and then the number for the new track se-
lection to delete.
5. Press the REVIEW pushbutton to view the details of
each track selected to delete.
6. Press the PLAY pushbutton and all the tracks except
the ones deleted will play.
7. Cancel the Delete function by pressing the DELETE
pushbutton a second time, pressing the STOP
pushbutton or open and then close the disc tray.
Pause Mode
1. Press the PAUSE pushbutton to temporarily stop play
operation at any time. The Red LED above the PAUSE
pushbutton will light. Refer to Figure 7.
2. Press the PAUSE pushbutton a second time to resume
playing the disc.
Stop Mode
Press the STOP pushbutton at any time to stop disc play.
Index Search Mode
The INDEX pushbuttons allow direct access to any index
point encoded in a disc track.
1. Press either a LEFT(lower number) or RIGHT(higher
number) INDEX pushbutton to select a desired Index
Number in a
specific disc
track. Refer to
Figure 8.
2. The disc will
automatically start playing from the selected Index
Point.
Note: The Index Numbers appear to the right of the Track
Numbers in the Display Panel. Not all discs will have
Index Numbers.
Reverse or Fast Forward
Press REV or FF pushbuttons to move rapidly through all
tracks on a disc. Speeded up sound will be audible during
this operation.
How to Operate the MCD751, cont
Figure 7
Figure 8
Figure 6