IBM TotalStorage 3580 L33, Setup, Operator, And Service Manual

Page: 86 / 143

Table 14. Diagnostic and maintenance functions (continued)
Function
Code
Diagnostic or Maintenance Function
Instructions
Location
J
Fast Read/Write Test: Performs tests to ensure that the drive can read
from and write to tape.
Page 80
L
Load/Unload Test: Tests the drive’s ability to load and unload a tape
cartridge.
Page 81
P
Enable Post Error Reporting: When selected, deferred-check conditions
are reported to the host.
Page 82
U
Disable Post Error Reporting: When selected, deferred-check conditions
are NOT reported to the host.
Page 82
Entering Maintenance Mode
The drive must be in maintenance mode to run drive diagnostics or maintenance
functions. To place the unit in maintenance mode:
1.
Make sure that no cartridge is in the drive.
2. Press the Unload Button three times within two seconds.
0
appears in the
Single-character Display (SCD), and the Status Light turns amber.
Note: If a cartridge is in the tape drive, it will eject the first time that you press
the Unload Button and the drive will not be placed in maintenance
mode. To continue placing the drive in maintenance mode, perform the
preceding step.
Maintenance functions cannot be performed concurrently with read or write
operations. While in maintenance mode, the drive does not receive SCSI
commands from the server.
Function Code 0: Exit Maintenance Mode
Function Code
0
makes the drive available for reading and writing data.
1. Place the drive in maintenance mode. For instructions, see “Entering
Maintenance Mode.”
2. Press and hold the Unload Button for three or more seconds to take the drive
out of maintenance mode. The Status Light turns off.
v If no error is detected,
0
temporarily appears in the SCD, then goes blank.
The drive then exits maintenance mode.
v
If an error is detected, the SCD shows an error code but still exits
maintenance mode. To determine the error, locate the code in Table 13 on
page 61. To clear the error, turn the power off, then on again.
The drive also exits maintenance mode automatically after it completes a
maintenance function or after ten minutes if no action has occurred.
68
IBM TotalStorage 3580 Tape Drive Setup, Operator, and Service Guide