Dell 2130cn Service Manual page 452

1. Removal and Replacement Procedures (RRPs)
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 ASSY, ensure that FUSER ASSY
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 posi-
tions. 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 trou-
bles.
No. Type
Plastic
Screw for
1 plastic
Silver, tap
Parts etc Plastic
Sheet metal
Screw for
2 metal sheet
Silver
Parts etc Sheet metal
Sheet metal
Screw for
metal sheet
3 Silver, with
an external
tooth washer
Parts etc Sheet metal
Application Shape
Chapter 3 Removal and Replacement Procedures (RRPs)
How to distinguish Points to be noted
•Silver-colored
•Thread is
coarser than
that of the sheet
Coarse
metal type.
•Screw tip is
thin.
•Silver-colored
•Diameter of the
thread section
is uniform.
•Silver-colored
•Provided with
an external
tooth washer.
•Diameter of the
thread section
is uniform.
  
application
locations
Oblique screw-
ing damages the
thread because
this screw cuts -
female threads in
the base material
as it goes in.
-
•Mounting
positions
of the
ground
wires.
Major