Sharp MX-M356N Service Manual page 5

: '15/Aug.
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5. Note for repairing/replacing the LSU
When repairing or replacing, be sure to observe the following
items.
* When repairing or replacing the LSU, be sure to disconnect the
power plug from the power outlet.
* When repairing or replacing the LSU, follow the procedures
described in this Service Manual.
* When checking the operations after repairing the LSU, keep all
the parts including the cover installed and perform the operation
check.
* Do not modify the LSU.
* When visually checking the inside of the machine for the opera-
tion check, be careful not to allow laser beams to enter the eyes.
If the above precaution is neglected or the LSU is modified, ones
safety may be at risk.
6. Note for handling the drum unit, the
developing unit
When handling the OPC drum unit, and the developing 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
* Avoid working at a place with strong lights.
* Do not expose the OPC drum to lights including interior lights for
a long time.
* 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.)
* Be careful not to attach fingerprints, oil, grease, or other foreign
material on the OPC drum surface.
Developing unit
* Be careful not to leave fingerprints, oil, grease, or other foreign
material on the developing unit.
Fusing unit
* Be careful not to "leave" fingerprints, oil, grease, or other foreign
material on the fusing roller.
If these items are neglected, a trouble may be generated in the
copy and print image quality.
7. Screw tightening torque
The screws used in this machine are largely classified into three
types.
These types are classified according to the shape of the screw
grooves and use positions.
The table below shows the types 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 under special circumstances, the details are
described on the separate page. Refer to the descriptions on such
an exception.
CAUTION: Especially for the screw fixing positions where there is
an electrode or a current flows, use enough care to
tighten securely to avoid loosening.
Screw kinds and tightening torques
Normal screws, set screws (including step screws)
Screw
diameter
M2.6
M3
M4
Tapping screws (for iron)
Screw
diameter
M3
M4
M3
M4
Tapping screw (for plastic)
Screw
diameter
M3
M4
8. Relation between model names and
names in the manual
MX-M266N/MX-M265N/MX-M265U
MX-M316N/MX-M315N/MX-M315U
MX-M356N/MX-M356U
MX-M316N NOTE FOR SERVICING - iii
Tightening
Material to be
torque
fixed
(Nm)
Steel plate 0.8 - 1.0
Steel plate 1.0 - 1.2
Steel plate 1.6 - 1.8
Tightening
Material to be
torque
fixed
(Nm)
Steel plate 1.0 - 1.2
(Plate thickness
0.8mm or above)
Steel plate 1.6 - 1.8
(Plate thickness
0.8mm or above)
Steel plate 0.6 - 0.8
(Plate thickness
less than 0.8mm)
Steel plate 1.2 - 1.4
(Plate thickness
less than 0.8mm)
Tightening
Material to be
torque
fixed
(Nm)
Plastic resin 0.6 - 0.8
Plastic resin 1.0 - 1.2
Model name
26cpm machine
31cpm machine
35cpm machine
Tightening Tightening
torque torque
(kgfcm) (lbft)
8 - 10 0.6 - 0.7
10 - 12 0.7 - 0.9
16 - 18 1.2 - 1.3
Tightening Tightening
torque torque
(kgfcm) (lbft)
10 - 12 0.7 - 0.9
16 - 18 1.2 - 1.3
6 - 8 0.4 - 0.6
12 - 14 0.9 - 1.0
Tightening Tightening
torque torque
(kgfcm) (lbft)
6 - 8 0.4 - 0.6
10 - 12 0.7 - 0.9
Name in the manual
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