Sony DNW-A100 Maintenance Manual page 196

5-2. Upper Drum Assembly Replacement
6. Remove the Upper Drum Assembly
(1) Insert the hexagonal wrench driver from the
screw hole and loosen the screw completely.
n
The upper drum assembly is fixed with the four
fixing screws (C3 x 12) in the screw holes.
These screws cannot be removed because of
stoppers.
(2) Check that the projection of the hexagon
screw from remover's surfase is 5 mm or
less.
n
The upper drum remover is supplied with the
new upper dum.
(3) Attach the upper drum remover to the two
screw holes of the brush slip ring assembly
with two screws.
(4) Turn the hexagon screw of the upper drum
remover clockwise by finger. The upper drum
will be detached from the shaft of the lower
drum slowly.
n
If the four upper drum securing screws are not
loosened completely and the hexagon screw of
the upper drum remover is rotated, the lower
drum may be damaged.
5-12
Upper drum remover
Screw holes(A)
Screw
holes(B)
Remove the Upper Drum Assembly
5 mm
Upper drum remover
Screw holes(B)
Screw holes(A)
Upper drum remover
DNW-A100/A50/A45
DNW-A100P/A50P/A45P