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3-6-11.
MEASUREMENT AND
ADJUSTMENT OF BACK TENSION
«TOOL»
Back Tension Meter;
VFK0132
VHS Cassette Tape(120min. tape except S-VHS tape)
A.
FWD TENSION ADJUSTMENT
«SPEC»
23g - 27g
1.
Play back the cassette tape from the beginning
and wait until the tape movement get the
stabilization (for approx. 10 to 20 seconds).
2.
Pull the Impedance Roller in the direction indicated
the arrow in Figure M34-A secure it with a piece of
adhesive tape.
3.
Insert the Back Tension Meter into the path of a
tape, and measure the back tension.
P2
PROBES OF GAUGE
Figure M34-A Measurement of Back Tension
4.
If it is out of specification, replace the Tension
spring.
B.
REV TENSION ADJUSTMENT
«SPEC»
30g - 60g
1.
Play back the cassette tape on SP Reverse Play
mode from the beginning and wait until the tape
movement get the stabilization (for approx. 10 to
20 seconds).
2.
Pull the Impedance Roller in the direction indicated
by the arrow in Figure M34-B secure it with a
piece of adhesive tape.
3.
Insert the Back Tension Meter into the path of a
tape, and measure the back tension.
4.
If it is out of specification, replace the Tension
spring.
Note:
While measuring, make sure that the three
probes of the meter are all in good contact
with the tape.
As the tension meter is very sensitive, we
recommend taking 3 separate readings.
Figure
M34-B
3-24
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