IBM 7133 D40, Руководство оператора

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Three keys, that fit all Models D40 and T40 locks, are supplied with the first lock that
you order. Keep at least one of these keys in a secure area.
Deskside Unit Cover Locks
On the 7133 Model T40, locks on the front and back covers provide physical security
for the drives and the connections to the system unit. You do not need to remove these
covers during normal operations. The two locks use the same key. If you lock the
covers, neither of them can be opened for servicing without the use of the key. You do
not need to lock the covers for them to stay closed.
Lock
Ordering Cover-Lock Keys
For protection against unauthorized key duplication, the cover locks are high-security
locks. Keys for these locks are a factory-restricted series and duplicate keys are not
available through normal commercial channels. The serial number of the lock is
stamped on each key; make a note of this number. The additional key supplied and
your note of its number should be stored in separate secure areas.
Make a copy of the official order form on the following page, fill in the details, and send
it to the address printed on the form. As a security precaution, the manufacturer will not
honor orders that are not on the official order form.
Chapter 1. Using the Subsystems
17