Sansui SR 2050C Owners Manual

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OPERATING INSTRUCTIONS

TWO-SPEED AUTO 3013/ MAN U AL TURNTABLE

-20506

SAN SUI ELECTRIC COMPANY LIMITED

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Thank you for selecting the Sansui SR-2050C Two-Speed Auto Up-Stop/
Manual Turntable. In doing so, we feel youve made an excellent choice, one
that promises you many years of rich musical enjoyment.

As an audio-only specialist, Sansui is recognized worldwide for the unsurpas-
sed quality of its products, be they turntables, stereo receivers, speaker sys-
tem or headphone sets, and takes the greatest measures to merit and maintain
this reputation.

The SR-2050C is no exception. We have not overlooked a single detail in
bringing it to you in perfect operating condition. Featuring the oil-damped
delay-motion lifter and automatic after-play arm lift and shut-off,the SR-2050C
eliminates all danger of accidental damage to the stylus or records through the
manual handling.

It is now up to you to assemble the turntable properly and to keep it working
perfectly. This manual has been prepared to help you do just that. Please
read it carefully.

Learn how to assemble, balance and operate the turntable first. Youll then be
better prepared to enjoy the worlds highest standards of audio reproduction.

83-2050 TURNTABLE

The Sansui SR-ZOSO turntable is available in three models as
given in the chart below:

MODEL : BASE & DUST COVER CARTRIDGE
51220500 - i Q i o
"A _sE:235-(E- - i - o- ____: - _
iii-IsaLZtis-ok - i i_' - i. _-_:

All the models are basically same. The operating instructions
for the SR02050C are all applicable to two other models.

CONTENTS

METHOD OF ASSEMBLY .................................................... 3, 4
TIZRMS AND FUNCTION OF PARTS ...................................... 5, 6
CONNECTION/OPERATION .................................................. 7
MAINTENANCE .......................................................... 8,9, 10

SPECIFICATIONS .............................................................. 10

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TERMS AND FUNCTION OF PARTS

Speed Selector Switches
These push-button switches are used to select the
turntable Speed for 33% and 45 rpm. First, turn
the control lever to its ON or PLAY position, then
depress one or the other to change the turntable
speed as required.

Control Lever *----------- Spindle Adaptor

.. . . . . ~RPM
OFF: With the lever in this posntton, power to the :22;st
turntable is shut off and the turntable speed cannot Belt
be changed to protect the hell. When all record Capstan
playing has been completed, he sure to return the Belt Guide

lever to this position.
ON: Power is applied to the set and the turntable

Shipping Bolts

starts rotating. Use this position to lift the arm Lubrication Holes
from the record after or during play. When it is Voltage Selector
necessary to change turntable speed, the lever should Switch

also be in this position.

PLAY: Use this position to lower the arm gently Spindle
to record.

Note: If the Selector Lever is in the AUTO UP-
S'lOl position, the Control Lever is automatically i
returned from PLAY to OFF after play. i

Important:

1. If the arm is inadequately moved hack after auto~
matic arm lift and shut-off after play. malfunction
may he caused. In this. case. move the arm outward
another half inch. The unit is never damaged l-._\- L
doing this.
2. The Selector Lever must be set to the COI'I'eCt L"--_ " M

position depending on the size of the record used.
If not, the unit may operate imprOperlv.

3. If a sonosheet or other non-standardized records
are used. the Auto lip-Stop device ma}~ not function
properly.

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MAINTENANCE

Changing Capstans

This turntables power source frequency has been
properly adjusted to your area by Sansui prior to
shipment. If you should move to a country or an
area where electrical cycles change from 50 to 60 or
vice versa, an adjustment in the turntables speed
is necessary. This is easily accomplished by chang-
ing the capstan. An accessory capstan is provided.

1. Remove the belt from the capstan and take off
the platter. Loosen the capstans setscrew with a
small screwdriver and slowly pull the capstan out.

9 :57 ...-3: I
.5; '~ . -

2. Insert the new capstan on the motor shaft and
tighten the setscrew firmly. The capstn must be
adjusted so that the belt is always in the center of
the belt guide and the belt still moves easily on the

capstan when the Speed Change-Over buttons are
pressed.

NOTE: The Speed Change-Over buttons cannot be activated unless
the Control Lever is in the ON and PLAY position.

3. Mount the platter again and recover with rub-
ber mat.

Oiling
Although the need for oiling depends on usage,

oiling should be performed once a year (every 1000
hours)

1. Oiling the Motor

Remove the platter and apply a few drops of oil
into the lubrication hole as indicated in the photo-
graph. Be careful that the oil does not stain the
belt or the capstan. In case of staining, it is neces-
sary to immediately clean ' ' " ' " '
the parts thoroughly with

benzine or carbon tetra-

chloride.

}

2. Oiling the Turntable Spindle

Remove the bottom board from the cabinet, loosen
a setscrew (photo 1) in the bearing section of the
turntable spindle behind the mounting board, pull

the spindle up, and apply one or two drops of the
supplied oil onto it (photo 2).

Adjusting the Stylus Pressure

1. Remove the stylus guard from the cartridge and
set the Control Lever to PLAY.

2. Remove the arm from its rest and the move the
main weight back and forth until the arm balances.
Then move the stylus pressure scale only so that
the 0 mark on it coincides with the marker on the
weight shaft.

3. By turning the main weight counterclockwise
(as viewed from the front), position it so that the
number (specified stylus pressure of the cartridge
used) on the stylus pressure scale coincides with the
marker on the weight shaft. For use with the

cartridge accompanying the SR-ZOSOC, the number
is equal to 2.

When abnormal howling is heard during play, it is
often because the turntable has been placed too close
to the speaker boxes and the cartridge picks up
speaker vibrations, To insure the best performance,
never place the turntable directly on a speaker box.