Digital Equipment DEC 3000 500X AXP Owner's Manual page 63

System Unit Cover Lock
Recording the If there is a serial number engraved on the system unit keys,
Serial Number record the number in case you lose the keys in the future. (See
of the Keys Figure 3–11.)
Record the serial number of the cover lock keys here:
_ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ _
What to Do if If you lose the keys to your sytem unit cover lock, you will
You Lose the need to call your Digital service representative, as described in
Keys Chapter 13. Make sure that you have the keys' serial number.
If there were no serial numbers on the keys, provide this
information to your Digital service representative.
3–18 Installing the System