Sanyo RD 30 - Mechanical Adjustments; Required Equipment for Adjustments; General Remarks for Adjustments; Pinch Roller Adjustment Procedure

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.