IBM TS2280, Setup, Operator, And Service Manual

Page: 45 / 142

Table 6. 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.
“Function code J: Fast read/write test” on
page 32
L
Load/Unload Test: Tests the drive's ability to load and
unload a tape cartridge.
“Function code L: Load/unload test” on
page 32
P
Enable Post Error Reporting: When selected,
deferred-check conditions are reported to the host.
“Function code P: Post Error Reporting
enabled” on page 33
U
Disable Post Error Reporting: When selected,
deferred-check conditions are NOT reported to the host.
“Function code U: Post Error Reporting
disabled” on page 34
Entering Maintenance mode
The drive must be in maintenance mode to run drive diagnostic tests or maintenance functions. To place
the unit in maintenance mode:
1. Make sure that no cartridge is in the drive.
2.
Press Unload three times within 2 seconds.
0
displays in the Single-character Display (SCD), the
Ready light is flashing, and the Fault light turns On.
Note: If a cartridge is in the tape drive, it ejects the first time that you press Unload and the drive is
placed in maintenance mode. To continue placing the drive in maintenance mode, complete the
preceding step. While in Maintenance mode, the drive does not accept a cartridge unless the drive
requests it. The SCD displays a flashing
C
to indicate a cartridge must be inserted.
Maintenance functions cannot be completed concurrently with read or write operations. While in
maintenance mode, the drive does not receive host interface commands from the server.
Exiting Maintenance mode
The drive must be in Function Code
0
to exit Maintenance mode.
To exit Maintenance mode:
1. Press and hold Unload for 3 or more seconds to take the drive out of maintenance mode. If no error
is detected,
0
temporarily displays in the SCD, then goes blank. The drive then exits maintenance
mode and the Ready light turns On.
2. If an error is detected, the SCD shows an error code but still exits maintenance mode. To determine
the error, locate the code in Appendix A, “Error codes and messages,” on page 65. To clear the error,
turn off the power, then on again.
Note:
The drive also exits maintenance mode automatically after it completes a maintenance function
or after 10 minutes if no action occurred.
Function code 0: Maintenance mode
Function code
0
makes the drive available for running drive diagnostic tests or maintenance functions,
or exiting from Maintenance mode.
1. Place the drive in Maintenance mode. For instructions, see“Entering Maintenance mode.”
2. To exit Maintenance mode, see “Exiting Maintenance mode.”
Operations
23