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MECHANICAL ADJUSTMENTS
REQUIRED
EQUIPMENT
Fan-shaped Tension Gauge (500g maximum}
Cassette-type Torque Meter (100g maximum)
Thickness Gauge
Cassette Tape (C-120)
Silicone Grease (Example: SHIN-ETSU SILICONE KS-64)
Paint or Glue
GENERAL
REMARKS
@
Before adjusting the mechanism
of the unit, clean the tape
contacting surfaces with a soft cloth soaked in alcohol.
Trouble may occur because of oil and grease stains.
@
The
Belts must
be kept clean while the adjustments
are
performed.
*
Silicone grease (Example: SHIN-ETSU SILICONE
KS-64)
is applied to the Drive Belt and
the Take-up
Belt to
protect them from abrasion.
If necessary,
apply
a proper amount
of silicone grease
(Example: SHIN-ETSU
S{LICONE
KS-64) to each groove
of the Flywheel and Friction assemblies.
NOTE:
Silicone grease is not applied to the Replacement Parts.
@
Never apply grease or oil to the ASO Belt. If applied, wipe it
clean with benzine.
PINCH ROLLER
ADJUSTMENT
1. Set the unit in the playback mode and check to see that the
clearance between the Pinch Roller Arm and the Slide Base
is 0.1mm, and that the Take-up Reel Gear rotates before the
Pinch Roller starts rotating as the PLAY button is gradually
pressed.
*
|f necessary, adjust the clearance by carefully bending the
Pinch Roller Arm as illustrated.
Do not excessively bend it.
Pinch Roller Arm
Slide Base
more than
0.1mm
2.
Measure the pinch roller pressure with a fan-shaped tension
gauge (500g) with the unit in the playback mode as follows:
*
Hook the fan-shaped tension gauge to the Pinch Roller as
illustrated and pull it away from the Capstan.
Then, slowly bring the Pinch Roller close to the Capstan.
3.
Fan-shaped
Tension Gauge
230 — 290g
Capstan
Pinch Roller
*
Measure the pressure the moment the Pinch Roller comes
in contact with the Capstan and starts rotating. It should
be 230 — 290g.
*
tf necessary, change the pressure by bending the Spring
or replace the Spring with a new one.
Check the Pinch Roller. If it has a defective rubber surface,
replace it with a new one.
FLYWHEEL THRUST ADJUSTMENT
Check
to see that the clearance
between
the Flywheel Thrust
and Flywheel is 0.09 — 0.17mm with the chassis upside down as
illustrated.
If necessary,
adjust the clearance
by the following
procedure.
Adjustment
Flywheel Support
</> Flywheel Thrust
0.09 — 0.17mm
Flywheel
vr
While
moving
the Capstan
up and down,
slowly turn the
Flywheel
Thrust clockwise
to obtain the clearance of "0"
between the Thrust and the Flywheel.
NOTE:
Do not turn the Flywheel! Thrust forcibly.
Turn the Thurst counter-clockwise
by 45° — 90° from the
position.
After the adjustment, secure the Flywheel Thrust with paint
or glue.
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