Compaq AP550 Compaq Professional Workstation AP550 Maintenance & Service G - Page 119

Clearing Configuration Memory

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Diagnostic Tools 4-25 Table 4-12 Computer Setup continued Task Save the system configuration to a blank 1.44-MB diskette. Restore the system configuration from a diskette. Restore factory default settings and exit Computer Setup. Exit Computer Setup without applying or saving any changes. Save changes to the system configuration and exit Computer Setup. Computer Setup Selection Select File, then select Save to Floppy. Select File, then select Restore from Floppy. Select File, then select Set Defaults and Exit. Select File, then select Ignore Changes and Exit. Select File, then select Save Changes and Exit. Clearing Configuration Memory The Workstation Configuration Memory Operating System (CMOS) may occasionally be corrupted. When this occurs, it is usually due to software or hardware that is not functioning accurately, or due to the addition or removal of expansion boards. If the workstation's configuration memory becomes corrupted, it is necessary to clear the configuration memory. 1. Turn off the workstation and any external devices, and disconnect the power cord from the grounded AC outlet. 2. Disconnect the keyboard, monitor, network cable, and any other external devices connected to the workstation. WARNING: To reduce the risk of personal injury from electrical shock and/or hot surfaces, be sure to disconnect the power cord from the wall outlet, and allow the internal system components to cool before touching CAUTION: When the unit is plugged in, the power supply always has 5 volts applied to the system board even when the unit is turned off. Failure to disconnect the power cord can result in damage to the system. CAUTION: Static electricity can damage the electronic components of the computer or optional equipment. Before beginning these procedures, ensure that you are discharged of static electricity by briefly touching a grounded metal object. 3. Remove the workstation access panel.

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Diagnostic Tools
4-25
Table 4-12
Computer Setup
continued
Task
Computer Setup Selection
Save the system configuration to a blank 1.44-MB
diskette.
Select File, then select Save to Floppy.
Restore the system configuration from a diskette.
Select File, then select Restore from Floppy.
Restore factory default settings and exit Computer
Setup.
Select File, then select Set Defaults and Exit.
Exit Computer Setup without applying or saving any
changes.
Select File, then select Ignore Changes and Exit.
Save changes to the system configuration and exit
Computer Setup.
Select File, then select Save Changes and Exit.
Clearing Configuration Memory
The Workstation Configuration Memory Operating System (CMOS) may occasionally be
corrupted. When this occurs, it is usually due to software or hardware that is not functioning
accurately, or due to the addition or removal of expansion boards. If the workstation’s
configuration memory becomes corrupted, it is necessary to clear the configuration memory.
1.
Turn off the workstation and any external devices, and disconnect the power cord from the
grounded AC outlet.
2.
Disconnect the keyboard, monitor, network cable, and any other external devices
connected to the workstation.
WARNING:
To reduce the risk of personal injury from electrical shock and/or hot surfaces, be
sure to disconnect the power cord from the wall outlet, and allow the internal system
components to cool before touching
CAUTION:
When the unit is plugged in, the power supply always has 5 volts applied to the
system board even when the unit is turned off. Failure to disconnect the power cord can result
in damage to the system.
CAUTION:
Static electricity can damage the electronic components of the computer or optional
equipment. Before beginning these procedures, ensure that you are discharged of static
electricity by briefly touching a grounded metal object.
3.
Remove the workstation access panel.