Sony GY-2120WD Maintenance Manual page 106

3-3. Drum Block
5. Remove the Upper Drum Assembly
(1) Insert the hexagonal wrench driver from the
screw hole (A) and loosen the screw
completely.
n
The upper drum assembly is fixed with the four
fixing screws (C3 x 12) in the screw holes (A).
These screws cannot be removed because of
stoppers.
(2) Attach the upper drum remover to the two
screws holes (B) of the brush-slipring assembly
with two screws.
n
Check that the projection of the hexagon screw
from remover's surfase is 1 mm or less.
(3) 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.
3-26
Upper drum remover
1 mm
Upper drum remover
Screw holes (B)
Screw holes (A)
Upper dum remover
Remove the Upper Drum Assembly
Screw holes (A)
Screw holes (B)
GY-2120WD/WS