Service manual

26 Utilities
TEST 74 creates a special key on the diskette. First, the diskette in the
maintenance kit must be formatted using the T 76 command (described in
Section 3.1). Secondly, the diskette must have the special diagnostic key
written on it before it can be used with the customer service mode system
exerciser.
Example 3–3 shows a successful example of creating a special-keyed
diskette.
>>> TEST 74
>>>
KA42 Flmker
VSflmk_QUE_port (A,B) ? A
VSflmk_QUE_id (0,1,2,3,4,5,7) ? 5
vsflmk_que_rusure (1/0) ? 1
vsflmk......... ok
Enter SCSI bus port.
Enter ID address of drive.
Enter 1 for yes, 0 for no.
Keyed successfully.
Example 3–3 Creating the Special Key on a Diskette
If any errors occur while running TEST 74, ensure that the drive is on-
line and operating properly, then run the special-key command again.
Also ensure that the diskette was originally formatted using the T 76
command.