Digital Equipment RW504-ZA, Service Manual

Page: 98 / 220

Table 4–6 (Cont.) Electronic Core Tests
No. Test Name Description
65 Calibrate
Magazines Calculates a min/max clearance for a magazine. (The
selected magazine should be empty.) The autochanger
requires a disk in the mailslot. The test passes if
clearance is 85 encoder counts (1 mm) up and down.
(See info 23 for actual values.)
If this test is run by SCSI command, set Byte 1 to the
storage slot number. (There are 16 storage slots.) The test
returns:
Byte 2-3 - clearance up
Byte 4-5 - clearance down
66 Clear Magazine
Offset Clears the value calculated in test 65.
67 Calibrate Mailslot Calculates an offset for the Mailslot. The Autochanger
requires a disk in the Mailslot.
68 Clear Mailslot
Offset Clears the value calculated in test 67.
70 -
74 Reserved For design/production use only.
75 UPS Test Tests whether or not the UPS is connected properly.
The test returns PASS if connected properly, FAIL if
the UPS is not connected properly or if there is no UPS
connected.
153 Random Exerciser Randomly exercises the autochanger. Needs at least two
cartridges and these cartridges will be randomly changed.
THIS TEST IS NOT TO BE USED BY THE CUSTOMER.
DO NOT USE TEST WHEN CUSTOMER’S DISKS ARE
IN THE LIBRARY.
Parameter A is drive usage (1=every time 10=every 10th
time).
Parameter B is mailslot usage. Default is 50, which is
every 50th time the mailslot is used.
Parameter C is the number of exchanges between
exchanges. Default is 0.
Hit
CANCEL
to stop.
4–40 Troubleshooting and Diagnostics