MX-M364N, MX-565N (serv.man4). Service Manual (Revised January 2016). - Sharp Copying Equipment Service Manual (repair manual). Page 5

MX-M565N NOTE FOR SERVICING - iii

When repairing or replacing, be sure to observe the following
items.

1)

When repairing or replacing the LSU, be sure to disconnect
the power plug from the power outlet.

2)

When repairing or replacing the LSU, follow the procedures
described in this Service Manual.

3)

When checking the operations after repairing the LSU, keep all
the parts including the cover installed and perform the opera-
tion check.

4)

Do not modify the LSU.

5)

When visually checking the inside of the machine for the oper-
ation check, be careful not to allow laser beams to enter the
eyes.

If the above precaution is neglected or an undesignated work is
performed, safety may not be assured.

When handling the OPC drum unit, the transfer unit, and the devel-
oping unit, strictly observe the following items.

If these items are neglected, a trouble may be generated in the
copy and print image quality.

(Drum unit)

1)

Avoid working at a place with strong lights.

2)

Do not expose the OPC drum to lights including interior lights
for a long time.

3)

When the OPC drum is removed from the machine, cover it
with light blocking material. (When using paper, use about 10
sheets of paper to cover it.)

4)

Be careful not to attach fingerprints, oil, grease, or other for-
eign material on the OPC drum surface.

(Transfer unit)

1)

Be careful not to attach fingerprints, oil, grease, or other for-
eign material on the transfer roller.

(Developing unit)

1)

Be careful not to attach fingerprints, oil, grease, or other for-
eign material on the developing unit.

(Fusing unit)

1)

Be careful not to put fingerprints, oil, grease, or other foreign
material on the fusing roller and the external heating belt.

2)

Do not leave the fusing roller in contact state for a long time.

The screws used in this machine are largely classified into three
kinds.

These kinds are classified according to the shape of the screw
grooves and use positions.

The table below shows the kinds of the screws and the tightening
torques depending on the use position.

When tightening the screws for repair or maintenance, refer to the
table.

However, for the other conditions of tightening screws than speci-
fied on this table, or when a special care is required, the details are
described on the separate page. Refer to the descriptions on such
a case.

NOTE: Especially for the screw fixing positions where there is an

electrode or a current flows, use enough care to tighten
securely to avoid loosening.

m)

cm)

M2.6

Steel plate

0.8 - 1.0

8 - 10

0.6 - 0.7

M3

Steel plate

1.0 - 1.2

10 - 12

0.7 - 0.9

M4

Steel plate

1.6 - 1.8

16 - 18

1.2 - 1.3

m)

cm)

M3

Steel plate 

(Plate thickness 

0.8mm or above)

1.0 - 1.2

10 - 12

0.7 - 0.9

M4

Steel plate 

(Plate thickness 

0.8mm or above)

1.6 - 1.8

16 - 18

1.2 - 1.3

M3

Steel plate 

(Plate thickness 

less than 0.8mm)

0.6 - 0.8

6 - 8

0.4 - 0.6

M4

Steel plate 

(Plate thickness 

less than 0.8mm)

1.2 - 1.4

12 - 14

0.9 - 1.0

m)

cm)

M3

Plastic resin

0.6 - 0.8

6 - 8

0.4 - 0.6

M4

Plastic resin

1.0 - 1.2

10 - 12

0.7 - 0.9