Dell PowerVault LTO5-140, User Manual, Page: 42 / 93

Table 5-1. Diagnostic and Maintenance Function Codes and Descriptions (continued)
Function Code H - Test Head
Causes the tape drive to perform the Head Resistance Measurements test and a Write/Read test (on the center of
the tape). The drive runs these tests to ensure that the tape drive's head and tape-carriage mechanics are working
correctly. The tape drive takes approximately 10 minutes to run the test.
1. Ensure that there is no cartridge in the drive.
2. Press the eject button three times within an interval of 2 seconds. The fault LED becomes solid amber, which
means that the drive is in maintenance mode.
3. Press the eject button once per second until
H
appears in the single-character display. If you cycle past
H
,
continue to press the eject button until it reappears.
4. To select the function, press and hold the eject button for 3 seconds. After you select the function,
C
flashes.
When
C
flashes, the drive is waiting for a cartridge. Within 60 seconds, insert a scratch data cartridge (or the
tape drive exits maintenance mode). After you insert the cartridge,
H
flashes and the test begins.
v If no error is detected, the test begins again and runs for a maximum of ten times. Each loop takes
approximately 10 minutes to run. After the tenth loop, the test stops and the drive automatically exits
maintenance mode.
v If an error is detected, the tape drive displays
5
, unloads the tape cartridge, and exits maintenance mode.
v To halt the diagnostic at the end of the current 10 minute test loop, press the eject button once. The drive
acknowledges the request by slowing the length of time that the currently displayed character flashes on the
single-character display (from twice per second to once per second). The diagnostic continues to the end of its
loop and then stops. The tape drive then rewinds, unloads the cartridge, and exits maintenance mode.
v
To halt the diagnostic immediately and terminate the test that is running, press the eject button twice. The
tape drive then rewinds, unloads the cartridge, and exits maintenance mode.
5-6
Dell PowerVault LTO Tape Drive User's Guide