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Chapter 3 Removal and Replacement Procedures
Epson AcuLaser C2900N
Revision B
Confidential
1.1 Before starting service procedure
- Start the procedure after turning off the power and removing the power cord from the outlet.
- When performing the service operation around the FUSER UNIT, ensure that FUSER UNIT and its
surrounding area have cooled down sufficiently.
- Pay sufficient attention to the parts during the procedure because they may be broken or may not
perform their functions properly if unreasonable force is applied.
- Since various types of screws are used, ensure that the right screws are used in their right positions.
Use special caution not to confuse the screws for plastic and the ones for sheet metal, because
using the wrong type of screw may result in damage to the screw threads or other troubles.
No. Type Application Shape
How to distin-
guish
Points to be
noted
Major
applica-
tion loca-
tions
1
Screw for
plastic
Silver, tap
Plastic
•Silver-colored
•Thread is coarser
than that of the
sheet metal
type.
•Screw tip is thin.
Oblique screwing
damages the
thread because
this screw cuts
female threads in
the base material
as it goes in.
-
2
Screw for
plastic
Silver, tap,
with flange
Plastic
•Silver-colored
•It has a flange.
•Screw thread is
coarse compar-
ing to the sheet
metal type.
•Screw tip is thin.
As it has a func-
tion to cut the
thread by itself, if
the screw is
inserted in an
angle and tight-
ened, the screw
thread will be
damaged.
•FUSER
UNIT
3
Screw for
metal sheet
Silver
Sheet metal
•Silver-colored
•Diameter of the
thread section is
uniform.
-
4
Screw for
metal sheet
Silver, with
an external
tooth washer
Sheet metal
•Silver-colored
•Provided with an
external tooth
washer.
•Diameter of the
thread section is
uniform.
•Mounting
positions
of the
ground
wires.
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