Fwd/Rvs Back Tension Check And Adjustment - Sony DSR-25 Service Manual

4-6.

FWD/RVS BACK TENSION CHECK AND ADJUSTMENT

1. Preparation before check
Mount the mechanism deck in the main unit, connect all the con-
nectors, then insert the mini DV torque cassette (J-7) into the
mechanism block.
Visually check
the gauge block
of the cassette
with the top cover
assembly removed.
Mini DV torque cassette (J-7)
[FWD side]
-1
9.5 ± 1.5 × 10 mN • m
[RVS side]
-1
9.5 ± 1.5 × 10 mN • m
5-27
2. Check and adjustment
• FWD (TG2) side
The torque value should satisfy 9.5 ± 1.5 × 10
the mini DV torque cassette runs in the FWD mode. If it does
not satisfy this, take the following measure.
Re-attach the spring to the upper hook if the
measurement value is beyond the specifications
or re-attach the spring to the lower hook if the
measurement value is below the specifications.
Then, repeat the measurement.
• RVS (TG7) side
The torque value should satisfy 9.5 ± 1.5 × 10
the mini DV torque cassette runs in the RVS mode. If it does
not satisfy this, take the following measure.
Re-attach the spring to the upper hook if the
measurement value is beyond the specifications
or re-attach the spring to the lower hook if the
measurement value is below the specifications.
Then, repeat the measurement.
Be careful that these spring blocks may hinder
the FL motor.
For more details,
refer to page 5-23.
DSR-25
-1
mN • m while
For more details,
refer to page 5-23.
-1
mN • m while