Table 6-2 describes the screws used in the printers, and provides guidelines to help determine where each type of screw is used. The screws can vary in length depending on the thickness of the material being fastened.

Typically, plated screws are used in areas visible to the customer, and black screws are used in all other areas of the printer. Always note where each type of screw is located and replace each one into its original location.

Table 6-2

 

Printer Hardware Descriptions

 

 

 

 

DRAWING

 

DESCRIPTION

PURPOSE

 

 

 

 

 

 

Threaded Phillips screw with

Used to fasten metal or plastic

 

 

lock and flat washer

to threaded plastic or metal.

 

 

 

 

 

 

Threaded Phillips washer head

Used to fasten metal or plastic

 

 

screw

to metal when high torque is

 

 

 

required.

 

 

 

 

 

 

Threaded Phillips w/captive

Used to fasten metal to metal

 

 

star washer

when good electrical contact is

 

 

 

needed.

 

 

 

 

 

 

Self-tapping Phillips screw

Used to fasten metal or plastic

 

 

 

to plastic mainframes.

 

 

 

 

 

 

 

 

 

 

To install a self-tapping screw, first turn it

C a u t i o n

 

 

 

counter-clockwise to align it with the existing

thread pattern, then carefully turn clockwise to tighten. Do not over-tighten.If a self-tapping screw-hole strips, repair of the screw-hole or replacement of the affected assembly is required.

In the removal and replacement procedures that follow, the number inside the parentheses, such as (4), refers to the number of screws you must remove.

Removal and Replacement 6-3