Sony SRW-5000, Руководство по обслуживанию, Страница: 270 / 438

5-64
SRW-5000/5500
* Omits the illustration of the drum and peripheral tape guides.
Washer
Portion B
Portion A
Ring roller (B)
Threading ring
assembly
T tension arm
T tension
regurator assembly
Roller
Ring roller (A)
Ring roller (C)
B3 x 16
11. Removing the Ring Roller (B)
Remove the screw, then remove the ring roller (B).
n
Be careful not to touch the drum and periheral
tape guides
12. Removing the Threading Ring Assembly
Remove the threading ring assembly from the
MD base assembly, while pressing the T tension
arm in the arrow direction.
n
Be careful not to touch the drum and the capstan
motor shaft.
Installation
13. Cleaning
Clean the inside of a new threading ring assembly
and contcting surface of the ring rollers (A), (B),
and (C) with a cleaning cloth moistened with
cleaning fluid.
14. Attaching the Threading Ring Assembly
Press the T tension arm in the arrow direction,
and install the threading ring assembly while
attempting to fit it to the grooves of the ring
rollers (A) and (C).
15. Attaching the Ring Roller (B)
(1) Pass the ring roller (B) through the roller
shaft while holding the threading ring
assembly so that it does not come off from
the grooves of the ring rollers (A) and (C).
Then tighten the screw.
Tightening torque: 49.0
x
10
_ 2
N
.
m
{5.0 kgf
.
cm}
(2) Check that the threading ring assembly does
not come off from the three ring rollers.
And check that the roller of the T tension
regulator assembly is set along the side of the
threading ring as shown in the figure (portion
A).
16. Confirming the Threading Ring
Operation
Turn the portion B of the threading ring assembly
vertically with fingers and confirm that the
threading ring and the three ring rollers rotate
smoothly while repeating the threading and
unthreading.
Remove/Attach the Threading Ring Assembly