Power Adjustment - Panasonic RS-736US Service Manual

Takeup Reel Table)
~—-(Takeup Reel Table Pulley (2))
Reel Table Felt
: | (Takeup Reel Table Pulley (1)
(Friction Spring
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iA te pa
YA
Ye
LOT
gg
2
Fig. 7
Friction Spring
—_—
Fig. 8
Adjusting Method:
For Recording/Playback, adjustment is done by using
the Friction Spring which is under the Takeup Reel Table
Pulley.
For too strong Takeup Tension ......... Turn the Friction
Spring counter-clockwise (viewed from below) to de-
crease the tension.
For too weak Takeup Tension ......... Turn the Spring
POPE CEES TTL EE TELL LLL Leet tite Oo ELLE iE a nia a iid
BRAKE POWER ADJUSTMENT
Left Reel
Weak Power |
Direction
;
Right Reel
Fig. 9
clockwise to increases the tension.
The takeup tension may increase or decrease when the
Reel Table Shaft is out of oil or the Friction Washer gets
stained with oil.
In Fast Forward the Felt between the Reel Table Pulleys
may get stained with oil or dust, lowering the takeup
tension. The standard conditions are obtained by wiping
off the stains completely.
Strong Power
Direction
Abnormal tension may sometimes be applied to the tape
if the brake fails in timing. It is, of cource, necessary to
provide sufficient brake power to stop the tape, but it
is all the more necessary to pay attention to the timing.
Specified Value: Strong Power Direction 100~250g8
Weak Power Direction 40~70¢g
The difference in brake power between the strong
power direction and weak power direction should
be more than 100 g. (One side Strong Power Direc-
tion, and the other side Weak Power Direction)
Measuring Method:
Instruments Required: Tension Gauge, Splicing Tape
Suspend a tension gauge from the end of the 7" Reel
Tape in the stop mode, pull it and read the average value
for a turn of the Reel. (Fig. 9)
Brake power differs according to the reel table rotating
direction, viz., either clockwise or counter-clockwise.
Therefore, the measurement should be taken in both
cases.