Digital Equipment VAXstation 3100 Maintenance Manual page 105

84 Utilities
do write testing on the removable media devices. This safety feature prevents
accidentally destroying the customers programed diskettes or tapes.
There are two utilities that create these special keys. TEST 72 creates a
special key on the diskette and TEST 73 creates a special key on the tape.
The diskette and tape in the maintenance kit must be initialized with these
special diagnostic keys before they can be used. The tape must be initialized
every time you use it with the Field Service mode system exerciser, because the
special diagnostic key on the tape is destroyed once the exerciser recognizes
the key. The special diagnostic key on the diskette is not destroyed when it
is used.
Figure 3-16 shows a successful example of creating a special-key diskette.
>>>
TEST 72
KA42-A RXmker
VSfmk_QUE_MEOtyp (l=RX23)
?
1
VSfmk_QUE_RUsure (DUA2 1/0)
?
1
<---
Enter media type.
<---
Enter 1 for yes,
0 for no.
VSfmk RES SUCC
<---
Keyed successfully.
>>>
Figure 3-16 Example of Creating the Special Key on a Diskette
Figure 3-17 shows a successful example of creating a special-key tape
cartridge.
If
any errors occur while running TEST 72 or TEST 73, make sure
the drive is on-line and operating properly and run the special-key command
again. Also, make sure the tape is not write-protected.