Sony DSR-2000A Service Manual page 140

6. Replacing the brake assembly
(1) Remove the cotter polyethylene washer and
remove the brake assembly and the brake
springs S/T.
n
Use care to prevent the brake spring from
flying off when removing.
The polyslider washer located under the
brake spring may come off together with the
brake spring, therefore be careful not to lose
it.
If it comes off, return it in place.
(2) Wipe the contact surface on the reel table
against the brake assembly with a cleaning
cloth moistened with cleaning fluid.
(3) Join the brake spring to a new brake assem-
bly as shown in the figure and fit it on the
reel motor shaft.
n
Avoid touching the brake shoe when replac-
ing.
(4) Attach a new cotter polyethylene washer
7. Checking and adjusting the brake torque
(1) S reel brake torque
Check the S reel brake torque meets the
specification below by turning the knob of
the brake torque gauge (CW) in the A
direction a turn in 1 to 3 seconds.
Tightening Torque : 7.5 ± 0.5 m N.m
{75 ± 5 gf.cm}
(2) T reel brake torque
Check the T reel brake torque meets the
specification below by turning the knob of
the brake torque gauge (CCW) in the B
direction a turn in 1 to 3 seconds.
Tightening Torque : 7.5 ± 0.5 m N.m
{75 ± 5 gf.cm}
(3) Failing satisfaction of the specification,
readjust by changing the positon that the
brake spring hooks on.
. If the torque is high, hook the brake spring
on the c portion.
. If the torque is low, hook the brake spring
on the a portion.
7-10
Cotter polyethylene washer
Brake assembly (S)
Brake shoe
Brake spring (S)
Polyslider washer
Brake spring (T)
Polyslider
washer
Reel table (S)
Cleaning
c
b
a
Brake spring
hook on portion b
Brake torque gauge (CW)
Reel table (S)
Brake torque gauge (CCW)
Reel table (T)
Cotter polyethylene
washer
Brake shoe
Brake assembly (T)
Reel table (T)
Brake spring
hook on portion b
A
B
Cleaning
c
b
a
DSR-2000A/2000AP