7-8  Chapter 7, Removal and Replacement Procedures 
7.5 PREPARING THE  
SYSTEM UNIT FOR THE  
INTERNAL REMOVAL AND  
REPLACEMENT PROCEDURES
To prepare the system unit for the internal  
removal and replacement procedures, follow 
these steps:
1.  Complete the removal procedures in the 
following sections:
a.  7.2 MONITOR
b.  7.3 KEYBOARD
2.  Disconnect any peripheral devices (printers, 
modems, etc.) from the computer.
3.  Disconnect the AC power cord from the AC 
outlet and from the system unit.
4.  Place the system unit on a flat surface with 
the front facing you.
To reassemble the computer, reverse steps 1 
through 3 of the preceding removal procedures.