Goldring Lenco GL78 Owners Manual

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GOLDRING
Lenco

INSTRUCTION MANUAL

(EL 78

TRANSCRIPTION UNIT

GOLDRING LIMITED

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INSTRUCTION MANUAL FOR
GOLDRING'LENCO GL 78"
TRANSCRIPTION UNIT.

It is recommended that these instructions be carefully read
before unpacking the Unit.

DESCRIPTION

The GoldringrLenco GL.78 is a precision engineered trans
Cription turntable unit suitable for the reproduction of
both mono and stereo records. It is available in chassis form
(GL.78) for mounting in a cabinet, or as GL.78/P already
fitted to a special plinth.

The turntable, which is die-cast from nonrferrous
materials, is dynamically balanced and weighs 9 lbs. It is
driven by a 4rpo|e constant velocity motor via a rubber
rimmed idler wheel and the total wow and flutter is as low
as 0.06%. The unique vertical drive system allows the turn
table speed to be continuously varied from 86 r.p.m. down
to 30 rpm. and from 1845 r.p.m. The standard playing
speeds of 78, 45, 33 and 16 are located by adjustable
prerset clickrin positions.

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FIG.4.

17. MAINTENANCE AND SERVICE The motor bearings
and turntable spindle bearings are self-lubricating and no
further lubrication should be necessary. Should the slideway
of the speed change mechanism run dry, then a small
amount of vaseline should be applied. Care must always be
taken that the underside of the turntable and the idler
wheel must be kept clean and free from grease.

NrB. Use a clean, dry, non-fluffy cloth for cleaning. To
remove grease, use a few drops of methylated spirit or
carbon tetrachloride on the cloth.

IF the turntable does not rotate but the motor is going,
then the idler wheel spring (20) needs replacing and the
underside of the turntable should be cleaned with a solution
of carbon-tetrachloride.

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IF the motor does not operate when the unit is
switched on, check that the mains are connected correctly,
Should the motor still not operate, then a fault has
developed and the motor should be repaired.

IF the motor continues to operate when the unit is
switched off, then the switch click suppressing condenser
(34) is faulty and should be replaced.

IF the speed is erratic or a rumble develops, then the
idler wheel (24) should be cleaned with carbon tetrachloride
as should be the underside of the turntable and the motor
cone (21).

IF 3 flat has developed on the idler wheel, this should
be replaced. To replace idler wheel remove the circlip (15)
and unhook the spring (20). Lift out the idler wheel arm
(25). The idler wheel/spindle is secured by a single nut (23)
undo nut, remove old wheel & spindle & replace with new
wheel/spindle taking care not to touch the rubber ring,
Replace assembly and refit spring and circlip.

If the unit is to be transported for any reason, it is essential
that the following precautions be taken:-

(1) Remove large counterweight from rear of arm and the
small weight from the outrider. Secure pick-up arm
to rest.

(2) Remove the headshell complete with cartridge, and
pack carefully as a separate item.

(3) Remove the turntable and pack as a separate item.
(4) Retighten motor transit screws.

(5) Tighten transit screws.
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