Function Code H: Test Head - IBM L5X Installation And User Manual

2. Press the Unload button once per second until
cycle past the desired code, press the Unload button once per second until the
code reappears.)
3. Press and hold the Unload button for 3 or more seconds, then release it to
select the function. The SCD changes to a flashing
4. Insert a scratch (blank) data cartridge. The SCD changes to a flashing
the tape drive runs the tests.
v If no error is detected, the diagnostic will loop and begin again. To stop the
loop, press the Unload button for 1 second and release. When the loop ends,
0
temporarily appears in the SCD.
v If an error is detected, the status light flashes amber and the drive posts an
error code to the SCD. To determine the error, locate the code in Appendix C,
"Error codes and messages," on page 59. To clear the error, either turn the
power off and then on again, or restart the drive by pressing and holding the
Unload button for 10 seconds.

Function code H: Test head

Approximate Run Time = 10 minutes per loop
Total Number of Loops = 10
Function code
tape-carriage mechanics work correctly.
Once you begin this test, the diagnostic begins the loop sequence. Time the first
loop by pressing the Unload button once to stop the diagnostic after the
completion of the first loop, then record the time it takes for the test to complete.
Compare the recorded time with the "Approximate Run Time" above. If the test
runs successfully but the execution time is significantly longer than the
"Approximate Run Time", run "Function code F: Write performance test" on page
34. If the Write performance test fails, replace the media and exit Maintenance
mode.
Press the Unload button to stop the diagnostic and exit Maintenance mode. Press
the Unload button once to abort the test at the end of the current test loop. Press
the Unload button twice to abort the test immediately. Wait for the drive to rewind
the tape and unload the cartridge.
Attention: For this test, insert only a scratch (blank) data cartridge or a cartridge
that can be overwritten. During the test, the drive overwrites the data on the
cartridge.
Note: If you inserted an invalid tape cartridge (for example, Gen 2 or WORM
media), error code
write-protected cartridge, or the media has read-only compatibility (for
example, Gen 3 media), error code
the tape drive unloads the cartridge and exits Maintenance mode after the
cartridge is removed.
H
performs tests to make sure that the tape drive head and
J
7
or appears in the SCD. If you inserted a
F
appears in the SCD. (If you
C
.
P
appears in the SCD. In either case,
Chapter 3. Operating
F
and
35