Teac A-3340 - TAKE-UP TORQUE AND BACK TENSION PROCEDURES; TAKE UP TORQUE CHECK AND ADJUSTMENT; BACK TENSION CHECK AND ADJUSTMENT

Procedure For Check And Adjustment
TAKE UP TORQUE
1. Block the shut-off arm in the on position and place REEL size
switch to LARGE position.
2. Place an empty reel (RE-701) and spring scale on right reel
table.
3. Depress the ( p ) play button. Allow the rotation of the reel
to slowly draw the scale toward the hub.
4. The spring scale should be 780820 g-cm.
5. If it is not adjust resistor R-2 until a scale reading within
the specified limits.
6. After adjusting R-2, check back tension of left reel motor, pro-
cedure as follows.
BACK TENSION
7. Place the empty reel and spring scale on the left reel table.
And depress the ( p ) play button.
8. Pull the scale away from the reel against the motor torque (ro-
tation), with a steady smooth motion.
9. The scale should be 3001320 g-cm. Adjust R-3, if checked value
of back tension exceeds the specified limits.
10. After adjusting R-3, adjust R-2 to bring back tension and take
‘up torque to exact specified limits.
NOTE
Adjustments will interact, several adjustments may
be required to bring both motors within specification.
11. After adjusting R-2 and R-3 repeat above procedure. When the
REEL switch is in the SMALL position, the scale reading should
be within the limits listed in the chart. If adjustment is re-
quired adjust the resistor R-l.
BACK TENSION: TAKE UP TORQUE . TAKE UP TORQUE: BACK TENSION.
TEAC TEAC
RE-701 RE-701
Fig. 6-3 Torque Measurement