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SERVICING THE RECORD CHANGER
DISASSEMBLY
INSTRUCTIONS
Turntable Assembly
1. Remove Automatic Spindle (1).
2. Remove
Stopper
Ring
(4) from
the top of Turntable
Shaft.
3. Carefully Lift Turntable Assembly (5) off the Shaft.
Note:
Before replacing the Turntable Assembly (5), move Start
Lever (14) to the "START"
position and move idler Off
Latch (37) clockwise until Idler Wheel (14) disengages
from Capstan (39) and Turntable (5).
This action will allow Turntable (5) to drop into position
without damaging the Idler Wheel (14).
Base Complete Plate Assembly
1. Disconnect the unit from the power supply.
2. Be sure that the mechanism is in the neutral position and
that Pickup Arm (6) is on its Rest (13) and clamped.
3. Remove pickup leads from Base Plate (58).
4. Remove five Screws (66, 76) which attach the Base Plate
(58) to the Main Plate (15), so that Base Plate Complete
Ass'y (58) is removed too easily.
Note:
When
replacing
Base Plate complete
Assembly
(58),
special care should
be taken regarding the following
a) Shut Off Lever (50) must be placed on the switch
side of the longest 9in of Trip Lever (38).
b) Index Plate (50) must be placed on Start Lever (14)
side of Select Lever Arm (28).
Cc) Push Lever (18) must be placed on the Cueing Guide
(10) side of the projecting part of Actuating Slide
(50).
Grease here
Turntable
Ass'y (14)
Push Lever (18)
Capstan (39)
Fig. 18
Grease here
=
Pickup Arm Assembly
1. Disconnect the pickup leads from the Terminals.
2. Remove Base Plate Assembly (58).
3. Remove Circlip (69), two Springs (23, 27), Washer (26),
and Collar (25) which is around Lift Shaft (10).,
4. Remove Pickup Control Lever Ass'y (24) by loosing two
Screws (67).
:
5. Remove Nut (75) which attaches Pickup Arm Ass''y (6)
and lift Pickup Arm Ass'y (6) upward.
Cueing Lift Ass'y
1. Remove Pickup Arm Ass'y (6) (step 3).
2. Remove Nut (22), Washer (21) and push Collar (20).
Note:
Be careful not to leak silicone grease from Collar (20).
Idler Wheel
1. Remove Turntable (5).
2. Remove
Circlip (68) and carefully lift off Idler Wheel
(14).
:
|
Attention:
Don't touch the friction surface of the Idler Wheel nor
allow friction surface to come into contact with any oil
or grease.
The Record
Changer
Mechanism
is well lubricated
before
leaving
the
factory,
however,
after
prolonged
use,
it Is
advisable to re-lubricate certain parts.
A medium
grade grease
or oil should
be applied to the
points shown in Fig. 18 and 19.
DO NOT TOUCH THE OUTSIDE
EDGE OF THE IDLER
WHEEL OR LET IT COME
INTO CONTACT WITH ANY
OIL OR GREASE.
Base Plate Ass'y
(on
@ mae
Mra GON
LS
Se
reoy
TT
7
MODEL SG-2050L
(9)
This unit has been subjected
to the most rigorous inspec-
tions
and
tests
before
leaving
the factory,
where
all
necessary
adjustments
have
been
made
to
ensure
the
satisfactory playing of records.
2
The
following
information
is provided, should
it become
necessary to make any minor adjustment.
Stylus Pressure
The stylus pressure should always be set as recommended
be cartridge manufacture.
~The
pressure
is adjusted by means
of the stylus pressure
adjusting screw (Fig. 20).
Turning
the screw
clockwise
as viewed
from the front
increases
the
pressure,
counterclockwise
reduces
the
pressure.
|
Anti-skating Control
Having set the stylus pressure 3.5 gr. is recommended
and
Anti-skating 'Control
Knob (Fig. 20) to the ''®'' position,
the
Anti-skating
force
is adjusted
to correspond
to the
stylus pressure applied.
Moving
knob toward
''+'" increases the Anti-skating force,
toward ''—"' reduces the force.
Stylus Pressure Adjusting Screw
——
LSAT
'
Drop Point
oO
cS
Adjusting Screw
ly
|
1
D
1B
|
Pickup Arm Lifting Height Adjusting Screw
wt
Anti-skating
Control
Knob
>»
Fig. 20 MODEL 300
MODEL
SG-2050L
Stylus Drop Point
Turning
the stylus
drop
point adjusting screw
(Fig. 20)
clockwise moves Pickup inward, counterclockwise moves it
outward.
Pickup Arm Lifting Height
If Pickup Arm
(6) does not lift enough to clear the top
record
of a stack on the turntable when
returning to its
rest,
turn
the
Pickup
Lifting
Height
Adjusting
Screw
(Fig. 10
4
) counterclockwise to raise the pickup.
The stylus should
lift 15.0 mm
above the face of a single
record
on the Turntable as Pickup Arm
(6) returns to it
Rest (13).
Turning the screw clockwise, Pickup Arm (6) is
lowered.
Idler Wheel Height
To raise, turn screw counterclockwise; to lower, turn screw
clockwise.
Adjust Idler Wheel (11) Height as shown in Fig. 21. -
Adjusting Screw
idler Wheel (11)
Capstan (35)
Idler Wheel (11)
Capstan (35)
Fig. 22
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