IBM LTO Ultrium 4, Installation And User Manual

Page: 62 / 92

Table 8. Troubleshooting tips (continued)
Problem description Corrective action
Codes display on the SCD, but the
status LED does not turn on. The status LED does not turn on immediately during a power-on or reboot.
During the power-on or reboot, random patterns will display on the SCD
while the status LED is not on. If a code displays on the SCD, but the status
LED does not turn on, refer to “Error codes and messages.”
The drive does not respond to server
commands. Press and hold the unload button on the drive for ten seconds to force a
drive dump. The drive will save the dump and then reboot to allow
communication to the drive to occur. Do not cycle power, as this will erase
the contents of the dump.
Methods of receiving errors and messages
Use this section as a guide for identifying error codes and message codes reported
by the drive, its enclosure (if applicable), or the server.
Note: The codes on the single-character display (SCD) have different meanings,
depending on whether they display during normal operations or while the
drive is in Maintenance Mode. Codes that occur during normal operations
are defined in “Error codes and messages.” Codes that occur while in
maintenance mode are defined in “Diagnostic and maintenance functions”
on page 16.
Table 9. Methods of receiving errors and messages
Source of error or message display Corrective action
The enclosure display (if the drive is
enclosed in a library or autoloader) Refer to the documentation for the enclosure.
The drive SCD and the Fault status
LED flashes amber See “Error codes and messages.” To determine the meaning of status LED
activity, see “Status LED” on page 11.
The drive SCD and the Fault status
LED is solid amber See “Diagnostic and maintenance functions” on page 16. To determine the
meaning of status LED activity, see “Status LED” on page 11.
SCSI log sense data (such as
TapeAlert flags) and SCSI drive sense
data at the server console See “Error codes and messages.”
Drive sense data sent to a library (if
the drive is enclosed in a library) Refer to your library documentation, then see “Error codes and messages.”
The drive error log See “Error codes and messages” and “Viewing the drive error log” on page
53.
Error codes and messages
If the drive detects a permanent error, it will display the error code on the SCD
and flash the Amber Fault status LED (Green Ready/Activity status LED will be
Off).
v
Make note of the error code displaying on the SCD prior to removing a cartridge
or clearing the SCD error code.
v
If an error occurred with a cartridge in the drive, push the unload button to eject
the cartridge.
v
To clear the error code displayed on the SCD and power cycle the drive, press
the unload button for ten seconds. A drive dump will be created.
46
LTO Ultrium 4 Half High Tape Drive