User Guide

EN Removal and replacement strategy 109
Removal and replacement strategy
This chapter documents the removal and replacement of field-
replaceable units (FRUs) only.
Replacement is generally the reverse of removal. Occasionally, notes
are included to provide directions for difficult or critical replacement
procedures.
WARNING! Remove the power cord before attempting to service the product.
If this warning is not followed, severe injury can result as well as
damage to the device. Certain functional checks during
troubleshooting must be performed with power supplied to the
product. However, the power supply should be disconnected
during removal of any parts.
Never operate or service the product with the protective cover
removed from the laser/scanner assembly. The reflected beam,
although invisible, can damage your eyes.
The sheet metal edges of the product can be sharp. Use caution
when working on the product.
CAUTION Some parts are electrostatic discharge (ESD)-sensitive. Always
perform service work at an ESD-protected workstation.
To install a self-tapping screw, first turn it counterclockwise to align
it with the existing thread pattern, then carefully turn it clockwise to
tighten. Do not overtighten. If a self-tapping screw-hole becomes
stripped, repair the screw-hole or replace the affected assembly.
Always remove the print cartridge before removing or replacing
parts. See “Print cartridge” on page 110.
Required tools
 #2 Phillips-head screwdriver with magnetic tip
 Small flatblade screwdriver
 Needle-nose pliers
 ESD mat
 Penlight
 #8 torx screwdriver
CAUTION Do not use a PoziDriv screwdriver or any motorized screwdriver.
These can damage screws or screw threads on the product.