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    							Chapter 9 - Compaq SmartStation Removal and  
Replacement Procedures 
 
Introduction 
This chapter provides subassembly level removal and replacement procedures
for the expansion base. Unless otherwise specified, the steps for
replacement procedures are the reverse of the steps for the removal
procedures.
After completing all necessary removal and replacement procedures, run POST
and Computer Checkup (TEST) (with the computer docked in the expansion
base) to verify that all components operate properly (refer to Chapter 2).
9.1 Precautions 
This section covers precautions that must be followed when servicing the
expansion base.
Electrostatic Discharge (ESD)
A sudden electrostatic discharge (ESD) can destroy static-sensitive devices
or microcircuitry. Use proper packaging and grounding techniques to prevent
damage. Refer to Appendix E, Electrostatic Discharge (ESD), for more
information on ESD.
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> CAUTION >>>>>
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    							Screws
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> CAUTION >>>>>>
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    							The following list outlines the removal and replacement procedures that are
covered in this chapter:
9.4 Preparation procedures for removal and replacement
9.5 Battery pack
9.6 Bottom cover
9.7 Keylock assembly
9.8 Expansion boards
9.9 Expansion board cage
9.10 Vertical circuit board
9.11 Power supply and bezel
9.12 Docking mechanism
9.13 System board and battery charging compartment
9.14 Battery contacts board
9.15 Drives
- Drive cables
9.16 Drive cages
9.17 Cable harnesses and PCMCIA sensor
9.18 Power and eject switch components
9.19 Horizontal guides and springs
9.20 Top cover
9.4 Preparation Procedures For Removal And Replacement 
Before beginning removal and replacement procedures, complete the following
steps:
1. Read and observe the precautions in Section 9.1.
2. Undock the computer if it is docked in the expansion base (refer to
Appendix D).
3. Remove the battery pack from the battery charger in the expansion base,
if one is installed (Section 9.5).
4. Turn off the expansion base.
5. Disconnect the power cord from the electrical outlet.
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> WARNING >>>>>
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    							This section covers procedures for removing and replacing the battery pack
from the battery charger in the expansion base.
Refer to Appendix B for the following information:
o Increasing battery pack operating time
o Ensuring battery gauge accuracy
o Conditioning the battery pack
o Disposal of a used battery pack
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    							1. Remove the battery pack from the battery charging compartment
(Section 9.5).
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    							NOTE: The front edge of the bottom cover is toed-in to the expansion base.
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    							9.7 Keylock Assembly 
To remove the keylock assembly, complete the following steps:
1. Remove the bottom cover (Section 9.6)
2. Remove the retaining clip [1] that fastens the pawl [2] to the keylock
barrel (Figure 9-4).
3. Remove the pawl (Figure 9-4).
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    							4. Remove the keylock from the outside of the bottom cover (Figure 9-5).
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    							5. Slide the plastic keylock barrel out of the bottom cover (Figure 9-6).
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    							NOTE: The blocker for the manual eject override mechanism is integrated
into the bottom cover. To replace the blocker, the bottom cover must
be replaced (Section 9.6). The blocker spring, however, may be
replaced by itself, and is accessible when the bottom cover is
removed.
9.8 Expansion Boards 
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