Sony DNW-A100 Maintenance Manual page 323

11. Ring Roller Removal
(1) Remove the screws, then remove the ring
rollers (A) and (B).
n
Be careful not to touch the drum (especially,
video heads).
(2) Move the threading ring in the direction
indicated by the arrow.
(3) Remove the screw, then remove the ring
roller (C).
n
Be careful not to damage the CTL head or
full-erase head.
12. Threading Ring Assembly Removal
Remove the threading ring assembly from the
chassis.
n
Be careful not to damage the drum (especially,
video heads or upper drum's tape running
surface) and capstan motor shaft at that time.
DNW-A100/A50/A45
DNW-A100P/A50P/A45P
*
Screw
(B3 x 16)
Screw
Washer
(B3 x 16)
Spring
Ring roller (C)
Washer
Ring roller
Ring
roller (B)
Ring roller B shaft
Full-erase head
CTL head
Threading ring
assembly
Ring Roller Removal/Installation
5-20. Threading Ring and Ring Roller Replacement
Omits the illustration of parts around
the threading ring (drum etc.).
Screw
(B3 x 16)
Washer
Ring roller (A)
T tension
regulator
Roller
5-139