Service Reference Guide

8–2 Service Reference Guide
Removal and Replacement Procedures Security Components
8.2 Security Devices
8.2.1 Smart Cover Lock
The hp workstation xw4000 supports an optional Smart Cover Lock. This software-controllable
lock prevents unauthorized access to the internal components when the Smart Cover Lock and
setup password are enabled.
If you enabled the Smart Cover Lock, use Computer Setup to unlock it. If you cannot enter your
password to disable the lock, you will need a Smart Cover FailSafe Key (Compaq spare PN
166527-001 or 166527-002) to open the computer cover. You will also need the key in any of the
following circumstances:
■ Power outage
■ Startup failure
■ PC component (e.g., processor or power supply) failure
■ Lost password
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CAUTION: The cooling fan is off only when the computer is turned off or the power cable has
been disconnected.
The cooling fan is always on when the computer is in the “On,” “Standby,”
or “Suspend” modes. You must disconnect the power cord from the power source before
opening the computer to prevent system board or component damage.
1. Prepare the computer for disassembly.
2. Using the Smart Cover FailSafe Key, remove the two tamper-proof screws that secure the
Smart Cover Lock to the chassis. Use the special Compaq tamper-resistant T-15 wrench (PN
166527-001) or screwdriver bit (PN 166527-002) for this operation.
smart cover lock mounting (hp workstation xw4000 shown)
3. Remove the Smart Cover Lock.
To reattach the Smart Cover Lock, secure the lock in place with the tamper-proof screws.