4.1 General 4 Replacement Procedures
Detroit 20 /Detroit 20E Series Maintenance Manual [CONFIDENTIAL] 4-1
4.1 General
This chapter explains how to disassemble the computer and replace Field Replaceable Units
(FRUs). It may not be necessary to remove all the FRUs in order to replace one. The chart
below is a guide to which FRUs need to be removed in order to remove others. Always start
by removing the battery pack, next, optional items such as the optional PC Card, then follow
the chart downward removing only those FRUs necessary to reach the one you think is
causing the computer to operate improperly. Refer to the example on the following page.
Battery pack
Keyboard Wireless LAN
HDD and/or
Modem
ODD and Expansion
Memory Module
Bluetooth Display Assembly
Top Cover Display Mask
System Board LCD Module
Fan & Thermal
Module
CPU
Speakers
TouchPad
FL Inverter Board
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