Compaq Evo D510 MT Hardware Reference Manual page 21

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Hardware Reference Guide
CAUTION: The Smart Cover FailSafe Key is a specialized tool available
from Compaq. Be prepared; order this key before you need one.
To obtain a FailSafe Key:
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Contact your authorized Compaq reseller or service provider.
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Refer to the Compaq Web site (www.compaq.com) for ordering
information.
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Call the appropriate number listed in the warranty.
To open the access panel:
1. Turn off the computer and any external devices.
2. Disconnect the power cord from the power outlet, and disconnect
any external devices.
3. Using the Smart Cover FailSafe Key, remove the two
tamper-proof screws that secure the Smart Cover Lock to the
chassis.
Removing the Smart Cover Lock Screws
4. Remove the access panel.
Hardware Upgrades
2–3