Teac A-4070G - Adjustment Procedures

6
MEASUREMENT
AND
ADJUSTMENT
—MECHANICAL
—
PINCH ROLLER PRESSURE ADJUSTMENT PROCEDURES
NOTE
Pinch roller pressure is supplied by pinch roller spring
arm only and it is most important that the solenoid plung-
er be fully bottomed before pressure measurement. Remove
knob and amplifier panel.
1. Block the shut-off arms in the on position.
2. Attach a suitable spring scale to the pinch roller shaft.
3. Place the unit in the PLAY mode, and holding the spring scale as
illustrated, slowly draw it away from the pinch roller.
4. Do not allow the string so rub against the pinch roller.
5. Note the reading on the spring scale at the instant the pinch roller
stops rotating.
6. The scale should indicate 2.0 +0.2 kg (5.0 1bs~5.6 lbs).
7. If adjustment is necessary, loosen the three screws on the capstan
solenoid and position the solenoid for optimum pressure.
8. Solenoid spring width should be approx. 11 mm.
INCREASE
DECREASE
jos
Timm
CAPSTAN
ral
theeed
PINCHROLLER
SPRING SCALE
3 SCREWS ose
REPOSITION SOLENOID TO OBTAIN
' Bais OPTIMUM PRESSURE
Fig. 6-1 Pressure Measurement and Adjustment Location