Sony HDW-750 Maintenance Manual page 280

7-2. Upper Drum Assembly Replacement
Tools
. Torque screwdriver bit (for M2) :
. Torque screwdriver bit (for M1.4) :
. Hexagon bit (across 1.5) :
. Torque screwdriver (for 3 kg) :
. Upper drum eccentricity adjustment tool (3) : J-6001-820-A
. Upper drum eccentricity adjustment tool (2) : J-6001-830-A
. Upper drum eccentricity adjustment tool (6) : J-6325-530-A
. Flatness check tool :
. Drum install plate :
. Cleaning cloth:
. Cleaning fluid:
. Skewer
m
(1) When attaching the upper drum assembly to
the flange, tighten the screws with two steps
of different torques as described below.
. First, tighten the screws with 10 x 10
N.m (1 kgf.cm).
. Second, tighten the screws with 25 x 10
N.m (2.5 kgf.cm) finally. To tighten the
screws to the above torque reading, attach
the hexagon bit to the torque screwdriver
and set the torque to 9.8 x 10
kgf.cm).
(2) Assemble the upper drum eccentricity
adjustment tools as shown.
Removal
1. Removing the cleaning assembly
Setting mode :
Enter the unthreading-end state of the unit.
(1) Remove the precision screw and hold the
specified position of the cleaning assembly as
shown in the illustration, and raise it up
exceeding the top of the manual eject gear
(A).
(2) Remove the AHC roller assembly of the
cleaning assembly between the drum support
and main frame.
n
When removing the cleaning assembly, be
careful not to touch the upper drum assembly
and drum assembly.
7-10
J-6325-380-A
J-6325-110-A
J-6326-120-A
J-6325-400-A
J-6325-360-A
J-6531-110-A
3-184-527-01
9-919-573-01
Upper drum eccentricity adjustment tool (3)
_2
_2
_2
N.m (1
Drum support
Upper drum eccentricity adjustment tool (2)
Upper drum eccentricity adjustment tool (6)
Main frame
Cleaning assembly
AHC roller
assembly
Precision screw
P1.4 x 3.5
Manual eject gear (A)
HDW-750/750CE V1