3-2
Removal and Replacement Procedures
Service Preparations
CAUTION:
The power supply in the Compaq Professional Workstation AP400
has an auxiliary power section. This section is always active as long as the unit is
plugged into a live AC outlet. Be sure to turn off the switch and unplug the power
cord before performing any service work.
CAUTION:
Electrostatic discharge can damage electronic components. Be sure
you are properly grounded before beginning any installation procedure. See
“Electrostatic Discharge Information” in Chapter 2 for more information.
Before beginning any of the removal and replacement procedures, complete the following steps:
1.
Turn off the workstation.
2.
Disconnect the power cord from the grounded AC outlet and then from the workstation.
3.
Turn off all peripheral devices and disconnect cables from the rear of the workstation.
NOTE
: For more information on preparing the workstation for service, see Chapter 2.
Cable Lock
The workstation comes standard with a cable lock provision for attaching a padlock and/or cable
lock. If installed, the locks must be removed before accessing internal components.
To remove the lock:
1.
Unlock and remove the cable lock and/or the padlock
1
.
2.
Remove the security bracket (plate) seated over the cable lock bracket
2
.
3.
Unfasten the retaining screw to release the cable lock bracket
3
.
2
1
3
Figure 3-2. Removing the padlock
