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Table 7. Diagnostic and Maintenance Functions
Function Code1-RunTapeDrive Diagnostics
Causes the tape drive to run the following self tests:
v Electrical
v Motors
v Write data flow
v Loop write-to-read
v Sensors
Attention: Insert only a scratch data cartridge for this test. Data on the cartridge will be overwritten.
1. Make sure that no cartridge is in the drive.
2. Within a 1-second interval, press the unload button three times. The status light becomes solid amber, which
means that the drive is in maintenance mode.
Note: If a cartridge is in the drive, it will eject the first time that you press the unload button. The drive will not be
placed in maintenance mode. To continue placing the drive in maintenance mode, remove the cartridge and
repeat this step.
3. Press the unload button once per second until 1 appears in the single-character display.
Note: If you cycle past 1, press the unload button once per second until it redisplays.
4. To select the function, press and hold the unload button for 3 seconds. After you select the function, the drive
runs diagnostics for approximately 90 seconds, then C flashes. When C flashes, the drive is waiting for a
cartridge.
5. Within 60 seconds, insert a scratch data cartridge (or the tape drive exits maintenance mode). After you insert the
cartridge, 1 flashes:
v If the diagnostic completes successfully, it begins again and runs for a maximum of 10 times. Each loop takes
approximately 20 minutes to run. After the tenth loop, the diagnostic stops and automatically exits maintenance
mode. To halt the diagnostic, press the unload button within the first 20 minutes of the test (or the diagnostic
will run another 20 minutes). 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 displays 0,
rewinds and unloads the cartridge, and exits maintenance mode.
v If the diagnostics fail, the status light flashes amber and an error code displays. The tape drive unloads the
tape cartridge and exits maintenance mode. To resolve the error, locate the code in Table 12 on page 53.
Chapter 4. Operating 29
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