MCS 6710 User manual

MCS*
Series
Modular Component Systems
Belt Driven Turntable
Owner’s Manual

Dear Penney Customer:
The product you have purchased has been carefully
engineered and manufactured to give you depend-
able operation. Read this handbook before operating
your unit to become familiar with its features, and
assure your obtaining the performance that will bring
you continued enjoyment for many years.
In the event you require technical assistance please
contact your local J.C.Penney store or catalog desk.
Retain this handbook for future reference.
In the spaces provided below, record the model and
serial numbers located on the back of the turntable
cabinet.
MCS°* Modular Component Systems
Series Belt Driven Turntable
GCG sae ee ee
Retain this number for future reference.
Table of contents page
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WARNING...
TO PREVENT FIRE OR SHOCK HAZARD, DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE.
2
(@) Fully-Automatic Operation
All operations in this MCS" Series turntable are
completely automatic. The program function enables
the user to enjoy manual play, automatic-start, auto-
matic-return, automatic-stop, one record continuous or
repeated play from one to six times, and multiple play
from one to six records. All mechanical movements are
accurate and silent.
2) Electronic Speed Switching
Even though this turntable is belt-driven, gone is the old
conventional pulley type speed changing mechanism.
Speed switching in this unit is fully electronic, thereby
adding to the high degree of mechanical precision and
reliability.
@) Variable Pitch Control
Adjusts speed accurately in case there is any change in
the turntable platter revolutions. This control knob can
be ‘‘fine-tuned”’ within a range of 6%.
4) Illuminated Stroboscope
Stroboscope markings on the platter edge are illuminat-
ed by a built-in strobo lamp for easy visibility. When one
line of markings seems to stand completely still, the
platter is rotating at precisely the rated speed.
© Bias
Bias counteracts side thrust; simply set the dial scale to
the same value as the tracking force.
© Viscous-Damped Cueing
Your tonearm will land exactly at the spot you desire ona
slow, smooth descent prevents the stylus from dropping
on the record.
@ Hinged, Detachable Dust Cover
Prevents dust from accumulating on platter or records.
Also when the dust cover is down, helps prevent the
cartridge from ‘‘bouncing’’ which can be caused by
changes in air movement, speaker sound radiation, etc.

Never connect the AC power plug before assembly has
been completed.
@ Do not grasp or hold the tonearm during operation of
the automatic mechanism.
M Never set the “program” knob or touch the tonearm
during automatic cycle (auto-start, auto-stop or change
cycle).
Wait until the tonearm has returned to the arm rest, or has
descended to the record and resumed play.
@MRecords having sizes other than 17 cm and 30 cm (7”
and 12’’) should be played manually.
Your turntable is designed for automatic handling of records
that adhere to accepted industry dimensions. Therefore,
use the unit manually for records other than standard sizes.
Note:
Warped records or those especially thinner or thicker than
standard should also be played manually only.
If such records are used for multiple-play operation, two
records may drop simultaneously, or the record may not
drop at all.
Min the case of multiple-play, be sure to use records of
the same size.
@ Use the cueing lever only for single-play operation (one
record only).
@ Power source
It is very dangerous to use this unit at a voltage which is
different from the rated voltage.
There is danger of combustion if the unit is connected to a
power source which is different from the rated voltage.
Be very careful concerning this point.
The correct voltage for this turntable is 120 V AC, 60 Hz.
@ Direct current cannot be used.
There are some places, such as ships, where direct current
is used as the power source. Before connecting the unit,
confirm the power source.
Connection of power cord.
Wet hands are dangerous.
Be sure to never touch the power cord with wet hands
because there is danger of electric shock. This is true, of
course, of all electric equipment.
MNever pull the power cord to disconnect it. Always pull
the plug of the cord only.
Location of unit.
Choose a place which is not in direct sunlight.
Select a place which will assure good ventilation.
M Never place heating equipment nearby.
Be sure to keep stoves and other sources of heat away from
this unit, because heat radiated by such equipment may
cause deformation of plastic parts or damage the cabinet,
or, at worst, cause a fire.
M Especially for families with children.
Take care that no small items, such as metal objects, are
put inside this unit.
In addition, children should be especially warned not to put
anything into the ventilation holes, such as toys or a screw-
driver, because these things may cause an electric shock or
result in a malfunction of the unit.
Wilf water spills on the unit.
If water should happen to spill on the unit, from an over-
turned vase for example, there is danger of fire or electric
shock. Disconnect the power plug from the electric outlet
immediately, and contact the store from which the unit was
purchased.
Reconstruction can cause accidents.
Absolutely never try to remodel, reconstruct or repair this
unit yourself. Do not attempt to touch any internal parts
because to do so may result in an electric shock or other
accident.
@ Be sure the power is off.
After you have finished using this unit, check once more to
be sure that the power is off. If the unit is left with the power
on for along period of time, it may not only be damaged, thus
shortening its useful life, but may also lead to a dangerous
accident.

Preparation for use
Attach the dust cover last, so that assembly has been
completed.
@ Checklist of parts
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@ Installation of turntable platter
1. Place the turntable platter on the center spindle.
2. Attach the belt to the capstan using the ribbon as
shown in the picture. Then, remove the ribbon.
(See Fig. 1.)
3. Place the turntable mat on the platter.
Ca
Ribbon
Note:
After having placed the turntable mat on the turntable
platter, manually rotate the turntable platter clock-
wise about 10 times.
This will disengage the automatic mechanism from
the tonearm gear, which, in rare cases, may have
moved out of its normal position during trans-
portation.
@ Installation of balance weight (See Fig. 2.)
Place the balance weight on the rear shaft of the tonearm
by inserting it clockwise.
Balarjoe weigf
“swat
@ Adjustments of horizontal zero (0) balance
and stylus pressure (See Figs. 3 and 4.)
1. Remove the stylus protector on your cartridge. Be
careful not to touch your fingers to the stylus tip.
2. Release the arm clamp and lift the tonearm from the
arm rest to free it.
Turn the entire balance weight clockwise (indicated
by the arrow ‘‘A’’) or counterclockwise (indicated by
the arrow ‘‘B’’) until the tonearm is approximately
balanced horizontally (floats freely).
Note:
Fig. 4-1 Excessive forward advancement of the
balance weight causes the cartridge side
to be lowered.
Fig. 4-2 Excessive backward retreatment of the
balance weight causes the cartridge side
to be raised.
Fig. 4-3 Upon balancing between the balance
weight and cartridge, the tonearm is held
horizontal.
During the adjustment of the horizontal zero (0)
balance, be careful that the stylus tip of the cartridge
does not contact the turntable mat or turntable base.
. After the tonearm is horizontally zero (0) balance,
temporarily refasten the tonearm with the arm clamp.
. Hold the balance weight stationary with one hand as
shown in the picture, and rotate only the stylus-
pressure ring to bring the numeral ‘‘0”’ of the ring into
alignment with the center line on the tonearm rear
shaft. (See Fig. 5.)
The adjustment of the horizontal zero (0) balance is
now completed.
a. © Balanceweight
Stylus-pressure ; .
ring ‘‘0”’ <= Center line
\
ATG amp

5. After adjusting the horizontal zero (0) balance, turn
the balance weight in the direction of the arrow and
align to the correct stylus pressure.
(See Fig. 6.)
(The stylus pressure of the attached cartridge (EPC-
74SMAD, J.C.Penney model 688-2217) is 1.75g.)
As the stylus-pressure ring moves in step with the
balance weight, proper stylus pressure can be
selected by directly reading the graduated ring.
Note:
Set
the
stylus
pressure
to
the
maximum
recom-
mended
value
for
your
cartridge
in
cases
where
the
record
has
an
extremely
high
recording
level,
or
where
the
unit
is
operated
in
a
room
at
low
tempera-
ture,
or
in
places
in
which
the
unit
is
subjected
to
vibrations.
(For
this
unit
the
stylus
pressure
should
be
adjusted
to
2.0g
for
optimum
performance.)
@ Installation of dust cover (See Fig. 8.)
Place the dust cover into position from directly above,
holding it at both sides. For detaching the dust cover, be
certain first to raise it as illustrated before removal.
Note:
Opening or closing of the dust cover during play should
be avoided. This may not only cause undesired
vibrations, but also result in skipping of the stylus.
lf you must open the dust cover during play, do so as
gently as possible.
@ Placement
@) Place the unit in a stable and horizontal position,
where there is little or no vibration.
@) Locate the unit as far away from the speakers as
possible and isolate the unit from sound radiation
(2) Connect the output terminals (See Fig. 9.)
Output terminals
L (White)
R (Red)
GND (Spade lug)
Amplifier or Receiver
Channel
WG Channe!
Note:
Be
sure
to
connect
the
ground
terminal
firmly
to
the
amplifier
or
receiver.
If
this
connection
is
not
made
or
is
loose,
a
power
source
““HUM?’’
will
result.
@ Adjustment of anti-skating
Set the bias knob to the same value as the stylus
pressure. (See Fig. 7.)
from them.
@) Do not place the unit where it is exposed to direct
sun, dust, moisture or heat.
@) Keep it in a well ventilated place.
@ Connections
@ Connect the AC power plug.
Connect the AC power plug to an AC wall socket or to
an
AC
outlet
on
the
back
of
a
receiver
with
a
current
of
120 Volts.

45-rpm adaptor (for single-play)
Balance weight
ws! ra
Stylus-pressure ring
Hinge
Spindle stand
Bias knob
Turntable mat
Cueing lever
Speed select knob
Single-play spindle Arm rest
Arm clamp
Turntable platter Pitch control knob
Strobe dots
Tonearm
Program knob
Strobe-illuminator/pilot
lamp
Headshell/cartridge
e
. 2
e
: . Start/stop button
Turntable cabinet ee Steriictop bation
Hest
pests
Modular
Component
Systems
B 35RPM/60Hz

How to operate
@ Single-play
@ Manual play of a record
Install
the
single-play
spindle
on
the
center
spindle.
(See
Fig.
10.)
. Place arecord on the turntable mat.
Set
the
speed
select
knob
to
the
desired
record
speed.
(See
Fig.
11.)
dy
2
3.
. Remove the stylus protector.
. Release the arm clamp.
Set the cueing lever to the ‘‘up”’ position.
(See Fig. 12.)
Move the tonearm over the record and set the cueing
lever to the ‘‘down”’ position. (See Fig. 13.)
The strobe-illuminator/pilot lamp will light-up and the
turntable platter will start to rotate.
The tonearm will descend slowly onto the record and
play will begin.
. When play is finished, the tonearm will automatically
return to the arm rest (auto-return), and the turntable
platter will stop rotation.
The turntable platter will continue to rotate briefly due
to its own inertia.
Note:
If the ‘‘program”’ knob is in a position other than ‘‘0”’,
play will be repeated by the number of times set;
therefore, be sure to keep the ‘‘program”’ knob in the
**0”’ position.
Attach the stylus protector again, if you have one, to
guard the stylus tip from damage.
@ Fully automatic single-play
1. Set the speed select knob to the appropriate speed of
the record being played.
2. Push the start/stop button. (See Fig. 14.)
The tonearm will move automatically over the lead-in
groove and descend slowly onto the record (auto-
start). Play will begin.
Note:
When the speed select knob is set to ‘*33’’ and push
the start/stop button, the tonearm moves to play a
12’’ record. While you set the speed select knob to 45,
the tonearm moves to play a7’’ record. You can place
the tonearm wherever you like if you set it manually.
. When play has finished, the tonearm will auto-
matically return to the arm rest (auto-return).
@ Repeat play of a single record
1. Set the ‘“‘program”’ knob to the desired number of
times you wish to play.
**R”’ position enables you to repeat play on a single
record continuously. (See Fig. 15.)
Note:
The ‘‘program’”’ knob may be turned either clockwise
or counterclockwise, except during automatic start or
automatic return cycle.
The ‘‘program’’ knob may be set to a desired
number, except during automatic start or automatic
return cycle. If you start play manually while the
‘‘program”’ knob is set to a number, there will be an
addition repeat play.
2. Start play in the same way as for fully automatic
single-play.

@ Multiple-disc operation
Te
Insert the multiple-play spindle, aligning the key at its
base with the slot of the center spindle.
Then, pushing downward, rotate the spindle clock-
wise until it stops. (See Figs. 16 and 17.)
To remove the spindle, push it down, turn counter-
clockwise until it feels loose and lifts upwards.
Before removing the multiple-play spindle, always
make certain that records are removed first.
Fingers
Multiple
play spindle
Motor shaft
Note:
Never insert or remove the multiple-play spindle
when the automatic mechanism is in operation or
engaged.
. Stack records of the same size on the fingers of the
multiple-play spindle. Never mix different record
diameters.
. Count the number or records stacked, then set the
“program” knob to the number corresponding to the
records; i.e., when you stack three records, set the
‘*‘program’”’ knob to the “‘3”’ position.
(See Figs. 18 and 19.)
When you stack a single record on the multiple-play
spindle, you need not set the ‘“‘program”’ knob.
4. Start play in the same way as for fully automatic
single-play.
Note:
If you want to stop play, be sure to set the “‘program”’
knob to the ‘‘0”’ position first, then push the start/stop
button.
The tonearm automatically returns to the arm rest,
and the turntable stops rotating.
If the start/stop button is pushed while there are still
records on the spindle, the next record will drop.
You must therefore return this record to the multiple-
play spindle to play it subsequently.
@ Multiple-disc plus repeat play
Set the ‘‘program” knob to the ‘‘R”’ position for multiple-
disc, and you can play the last record repeatedly
(repeat).
@ How to stop play
Push the start/stop button.
The tonearm automatically returns to the arm rest, and
the turntable stops rotating.
Of course, the unit will automatically shut off even when
the tonearm is manually returned to its arm rest directly.
Note:
Before you operate the start/stop button, make sure that
the ‘‘program” knob is set at the ‘*0”’ position.
If this knob is set at any position other than “‘0”’ the
repeat play is continued by the number of times
Indicated.
@ How to suspend play
Set the cueing lever to the up position.
The stylus tip of the cartridge will be lifted from the
record.
®To begin play
Set the cueing lever to the down position. The tonearm
will descend slowly onto the record and play will begin.
@ When you play a 45-rpm record with a large
center hole
In the case of “‘single-play”’, place the 45-rpm adaptor
for single-play on the regular single-play spindle.
In the case of “‘multiple-play’’, insert the 45-rpm
multiple-play adaptor (optional) into the center spindle,
in the same manner as the regular multiple-play spindle.
@ If the unit is not to be used for some time
Secure the tonearm with the arm clamp.
Attach the stylus protector, if your cartridge has one, to
guard the stylus from damage.
Close the dust cover.

@ Adjustment of arm-lift height
(See Figs. 20 and 21.)
The arm-lift height (distance between the stylus tip and
record surface when cueing lever is raised) has been
adjusted at the factory before shipping to approximately
15 mm (19/32”’).
If the clearance becomes too narrow or too wide, turn the
adjustment screw clockwise or counterclockwise, while
pushing the arm lift down.
Clockwise rotation
—distance between the record and stylus tip is
decreased.
Counterclockwise rotation
—distance between the record and stylus tip is
increased.
15 mm (19/32’’)
Note:
As the adjusting screw has a hexagonal head, be sure to
make the adjustment while depressing the arm lift, or the
screw will not move freely.
Also be sure that the hexagonal head retracts correctly
into the arm lift when the latter is released.
@ Adjustment for automatic start position
(See Fig. 22.)
(Remove the rubber cap.)
In cases where the stylus tip sets down outside of the
record
—rotate the screw clockwise.
In cases where the stylus tip sets down too far in the
recorded groove
—rotate the screw counterclockwise.
@ Adjustment for automatic return position
(See Fig. 22.)
(Remove the turntable mat.)
In cases where the tonearm tends to return before the
playing has finished.
—rotate the tonearm adjustment screw clockwise.
In cases where the tonearm fails to return after the last
groove of the record has been played
—rotate the tonearm adjustment screw counter-
clockwise.
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@ Speed adjustment
(with pitch control knob)
(See Fig. 23.)
Strobe dots are set on the rim of the turntable platter
according to the power-line frequency and the speed of
the records. Make adjustment, referring to the strobe-dot
indication.
1. Set the speed select knob to the speed to be adjusted.
2. Release the arm clamp and move the tonearm toward
the record with the cueing lever in the up position.
The strobe-illuminator/pilot lamp will light up and the
turntable platter will rotate.
In the U.S., or 120 V AC, the strobe-dots should be
measured or the 60 Hz level.
. While turning the pitch control knob either to the
**+%* side or ‘‘—’’ side, adjust so that the strobe dots
of the turntable platter look as if they were stationary.
This represents the correct speed.
“+” direction
The speed of the turntable platter will increase. Turn
the knob in this direction if the strobe dots seem to be
“falling back’’, i.e. seem to be moving counter-
clockwise. When the dots appear to be stationary,
turntable speed is accurate.
‘**_” direction
The speed of the turntable platter will decrease. Turn
the knob in this direction if the dots seem to be
“running ahead’’, i.e. seem to be moving clockwise,
until they appear stationary.
Moreover, the pitch control knob can be used for both
33-1/3 rpm and 45 rpm. Adjustment is to be made
according to selected speed (33-1/3 or 45 rpm).
45rpm
33'/3 rpm
45 rpm
33'/3 rpm
SEAS S
Strobe-illuminator
/pilot
lamp
CR
bcs
Strobe dots
The strobe dots for 60 Hz,
33-1/3 rpm seem to be stationary.
Note:
Strobe dot pattern
The strobe-illuminator/pilot lamp of this unit employs
the standard commercial power source. The
frequency of such power source, when actually
measured, has a fluctuation of about 0.2%.
As such a fluctuaiton of the power source affects the
strobe-illuminator, the strobe dot pattern also seems
to fluctuate to a certain extent. But the unit is not
affected by these fluctuations of the power source,
since a DC motor is employed.
In other words, rotation of the platter will be constant,
and slight shifts in the movement of the dots simply
reflect normal drift in the power-source frequency.
Special Note:
In the USA use 60 Hz line for 33-1/3 rpm and
45 rpm. The bottom line is used for 33-1/3 rpm
when adjusting the strobe and the next line up is
used for 45 rpm when adjusting the strobe. The 50
Hz is use in European countries.

Maintenance
Keep the stylus and your records clean
If the stylus is not kept clean, it will not contact the record
groove properly, nor track perfectly, resulting in sound
deterioration as well as damage to both the record and the
stylus tip.
Be especially careful to clean away all dust and dirt from the
stylus tip with a soft brush or blower. DO NOT USE YOUR
FINGER. YOU MAY DAMAGE THE STYLUS. We recom-
mend having your stylus checked periodically by J.C.
Penney Store. Remember, a worn or damaged stylus can
permanently damage your record collection.
Attach the stylus protector when not in use, and keep the
turntable dust cover closed both when playing a record and
when the turntable is not in use.
Records should be kept free of dust and finger marks, and
stored in their protective jackets when not in use. Records
not kept clean will cause scratchy sound, and deterioration
of the record and stylus. Clean your records regularly witha
record cleaning kit available at J.C. Penney.
@ Wipe the dust cover and turntable base wth a soft,
dry cloth.
Never use any cleaners containing alcohol, benzine or
thinner. Use of a chemical dust cloth should also be
avoided. Be sure that the dust cover is not exposed to
insecticide spray.
To remove stubborn finger prints or grease spots, detach
the dust cover and disconnect the AC power plug.
Use a soft cloth slightly moistened with a mild soap and
water solution.
Do not wipe the dust cover during play, or the tonearm
may be attracted toward the dust cover due to the
generation of static electricity.
10
Care
In the Event of Trouble
Hum...Your turntable utilizes a DC motor to reduce
inductive hum. If annoying inductive hum is heard, it can be
caused by the electromagnetic field produced from the
motors or transformers used in another device. Do not place
the turntable near a device in which a motor or transformer
is used. To prevent the turntable from being affected by the
power transformer of your amplifier, receiver or tape deck,
place the turntable on the opposite side of the power
transformer.
Acoustic Feedback .. .Cartridges are very sensitive and
may pick up slight sound pressure or vibrations of the
speaker coming along the floor or even though the air if
close enough. Therefore, the location of your turntable is
very important. See paragraph ‘‘placement”’ on page 5.
Automatic mechanism...While moving the tonearm to-
ward the record, there may be cases where the tonearm
tends to return to the arm rest.
In such a case, rotate the turntable platter clockwise about
10 times.
This will disengage the automatic mechanism from the
tonearm gear, which in rare cases may have moved out ofits
normal position during transportation.
Service ...Contact your J.C. Penney store or Product
Service Center if any service is ever necessary.
Replacement
@ Replacement of the stylus. (See Fig. 24.)
Note:
@The stylus will give you many hours of listening
pleasure.
@To prevent damage to your records it should be
replaced at the first sign of wear.
@Noise or scratchiness may indicate a worn or damaged
stylus.
1. Raise the forward end of the tonearm, with the arm
clamp detached.
2. Carefully grasp the stylus assembly and lower its top
portion as shown in illustration ‘‘A’’, then pull it as
shown in “B’’.
3. Be careful not to touch the stylus tip and install the
new one in the reverse order like “‘B”’ to “‘A’”’.

2.0 Tonearm section
Power supply ........... 120 V AC, 60 Hz WGRS cikivosics ¢ xT cesregles ‘“*S’’ shaped tubular arm,
Power consumption ....3W Semi-integrated type
Dimensions ............ 17.6X43x37 cm Effective length......... 230 mm (9-1/16’’)
(HxWxD) (6-17/32x 16-15/16x OVOMANG) . .ds0sccs a sd00 15 mm (19/32’’)
14-9/16 inches) Tracking error angle ....Within 2°32’ [at the outer
IONE Was Chieis ealais 35 He 5.0 kg (11.0 Ibs) groove of 30 cm (12’’) record]
Within 0°32’ [at the inner
murntabie section: —— >? groove of 30 cm (12"’) record]
ANS ae cee Sete 0 ae a Automatic turntable with, Offsetangle ............ 22°
Frequency Generator Servo Adjustable stylus
Automatic start, Automatic pressurerange ......... Oto3g
return, Automatic shut-off, Cartridge weight
Repeat
play
with
convenient
TONGS
xa
ois
ces
ea
GS
ce
HeOs
6to8g
“‘Program”’ knob and . é
Malti-play
Cartridge
section
Drive
method
...........
Belt
drive
VBO
cues
oe
nbo
careracae
Moving
magnetic
stereo
ee
eee
Frequency
Generator
Servo
cartridge
DC motor EPC-74SMAD (AT71)
Turntable platter........ Aluminum die-cast, J.C.Penney Model 688-2217
30.4 cm (12’’) Frequency response ....20 Hz to 25 kHz
purniable speeds ....... Soni ie ne eS Output casas tee Lego 2.5 mV 1 kHz, 5 cm/s.
Pitch controls .......... 6% adjustment range zero to peak lateral velocity
Speed change method .. Electronic change (7 mV 1 kHz, 10 cm/s.
Wow and flutter......... 0.05% W.R.M.S. (JIS C5521)
zero to peak 45° velocity
+0.08%
peak
[DIN
45
500})
(IEC 98A Weighted)
: Channel separation ..... More than 22 dB at 1 kHz
Rumble Sere ee et ee —65 dB (IEC 98A Unweighted) Channel balance ERS Ba: Within 2 dB at 1 kHz
Load impedance ........ 47 kQ to 100 kD
Stylus pressure ........ 1.75+0.25g
Replacement stylus ....EPS-74STSD (ATN 71)
J.C.Penney Model 688-2227
You can also use the ATN71 replacement stylus which is
sold by audio-technica U.S., Inc.
Specification subject to change without notice.
Weight and Dimensions shown are approximate.

Printed in Japan
Model No. 683-6710 SFNU683A01
Distributed
by
J.C.Penney
Company,
Inc.,
New
York,
N.Y.
10019
Catalog
No.
853-2624
F0879D0