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Table 9. Diagnostic and maintenance functions (continued)
Function Code 7 - Run LDI or RS-422 Wrap Test
Causes the tape drive to perform a check of the circuitry from and to the LDI or RS-422 connector.
Before you select this function, attach an LDI or RS-422 wrap plug to the tape drive’s LDI or RS-422 connector (in
place of the LDI or RS-422 cable).
1. Make sure that no cartridge is in the drive.
2. Within a 1.5-second interval, press the unload button three times. The status light becomes solid amber, which
means that the drive is in maintenance mode.
3. Press the unload button once per 1.5 seconds until 7 appears in the single-character display. If you cycle past 7,
continue to press the unload button until it redisplays.
4. To select the function, press and hold the unload button for 3 seconds. After you select the function, 7 flashes
and the tape drive automatically starts the test:
v If the test is successful, it loops and begins again. To halt the test, press the unload button. The test continues
to the end of its loop and then stops. The tape drive then displays 0 and exits maintenance mode.
v If the test fails, 9 displays, the test stops, and the tape drive exits maintenance mode. To resolve the error,
locate 9 in Table 15 on page 67.
Function Code 8 - Convert FMR Tape to Scratch Tape
Causes the tape drive to erase the field microcode replacement (FMR) data on a scratch data cartridge and rewrite
the cartridge memory on the tape. This turns the cartridge into a valid scratch data cartridge.
1. Make sure that no cartridge is in the drive.
2. Within a 1.5-second interval, press the unload button three times. The status light becomes solid amber, which
means that the drive is in maintenance mode.
3. Press the unload button once per 1.5 seconds until 8 appears in the single-character display. If you cycle past 8,
continue to press the unload button until it redisplays.
4. To select the function, press and hold the unload 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 the FMR cartridge (or the tape drive
exits maintenance mode). After you insert the cartridge, 8 flashes, the tape drive erases the firmware on the tape,
then rewrites the header in the cartridge memory to change the cartridge to a valid scratch data cartridge:
v If the operation is successful, the tape drive displays 0, rewinds and ejects the newly converted scratch data
cartridge, and exits maintenance mode.
v If the operation is not successful, an error code displays. To resolve the error, locate the code in Table 15 on
page 67.
Chapter 4. Operating 41