Teac A-2300SD - Back Tension; Take-Up Torque; Reel Height Adjustment

TORQUE MEASUREMENT PROCEDURE
All Torque and Tension Measurements must be made with
the automatic shut-off switch (right tension arm) blocked
to the ON position.
7-3 BACK TENSION
1. Place an empty 2” hub reel on the left reel table, and
fasten one end of a 30” length of string to the reel
anchor.
2. Wind several turns of string counter-clockwise around
the hub. Attach spring scale to string.
3. Place the unit in the ( ► ) Play mode.
4. Pull the scale away from the reel against the motor
torque with a steady smooth motion.
5. Note the scale reading while it is in steady motion.
(The string must not rub the reel flanges)
6. Adjust R-2 as needed to obtain tension of 180 to
210g-cm(2.8 to 3.1 oz-in).
7-4 TAKE-UP TORQUE
1. Place the empty reel and attached spring scale on the
right reel table.
2. Place the unit in the ( ► ) Play mode.
3. Allow the rotation of the reel to slowly draw the scale
toward the hub.
4. Hold the spring scale with enough force to allow a
steady reading.
5. Itshould be approx. 380 to 400 g-cm (4.1 to 4.8 oz-in).
If adjustment is necessary, slide the band on R-1.
NOTE: To measure torque when using a reel with a
hub radius of other than (2”) refer to following
table;
FORMULA FOR TORQUE CALCULATION:
T (g-cm) = r X W
r: radius of hub (cm)
W; grams (read on spring scale)
7-5 REEL HEIGHT ADJUSTMENT-
First check the tape movement by loading a tape using 7”
Standard reels and running the tape in the play mode. If
tape rubs against the side of reel, remove reel and adjust
screw. Then recheck by loading reel again. Repeat adjust¬
ment until tape travels smoothly without rubbing sides
of reel.
Adjustment Location
If necessary, adjust Slider of the resistors until you have
the correct scale reading to optimum torque. Refer to
adj. location below.
Reel Motor (right)
R1 for TAKE-UP TORQUE
R2 for BACK TENSION
R4 for FAST FORWARD BACK TENSION (FIXED)
Fig. 7-3 Adjustment Location
Fig. 74 Torque Measurement
Fig. 7-5 Reel height adj.
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