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Left Reel Table
Brake Rod(1)
Fig. 10
Right Reel Table Pulley(1)
Adjusting Method:
Make the adjustment by use of elongation and contrac-
tion of the Right and Left Brake Springs. (Fig. 10)
Brake Timing: During FF or PLAY mode, brake should be
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applied earlier on the Supply Ree! side than the Takeup
Ree!
side.
The
reverse
applies
during
the
REW
or
REVERSE mode.
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BACK
TENSION
DURING
RECORD/PLAYBACK
OR
FAST
FORWARD
Back Tension has a relation to Tape Driving Power
of
the Capstan.
Too high or too low Back Tension exerts
bad effect on tape speed and increases wow and flutter,
preventing the Tape from running smoothly.
Back Ten-
sion should therefore be adjusted carefully.
Measuring Method:
Instruments Required: Tension Gauge, Splicing Tape
1. Place a full reel of 7" Tape on the Supply Reel Table.
While unreeling theTape, make the measurement
in
the same way as for measurement of takeup tension
during Recording Playback.
2. When the Tape is fully wound on the 7" Reel, the
standard Back Tension is:
Back Tensien during Recording/Playback :
10~25 ger
Back Tension during Fast Forward:
10~25 gr
Adjusting Method:
1. If Back Tension is high: The Supply Reel Table Shaft
is dirty or is out of oil or stain.
2. |f Back Tension is low: The tension of Rewind Belt or
of Counter Belt is too low.
Therefore,
it should be
replaced.
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