IBM B-Series, Maintenance Information

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Updating Microcode from FMR Cartridge (Drive-Only Models)
The cartridge must not be file protected.
This procedure automatically updates the field microcode replacement (FMR) tape with the microcode
from the drive if the FMR tape does not contain the microcode and updates the microcode in the device
with the first available EC level of microcode on the FMR tape.
Note: If you want to create an FMR tape from a scratch tape that will contain the microcode that is active
in the device, go to “Making FMR Tape from Scratch Tape—Drive-Only Models” on
page PROC-39.
1. With the drive unloaded, press the UNLOAD push button 3 times within a 1-second interval. The
Maintenance and Clean indicators start flashing.
2. Press the UNLOAD push button 2 times at one second intervals to advance to the Update Microcode
From An FMR Tape option. The Maintenance and Busy indicators start flashing and the Clean LED is
off.
3. Press the UNLOAD push button 2 times within a 1-second interval to select the Update Microcode
From An FMR Tape option. The Busy and Clean LEDs go off.
4. The drive requests that an FMR tape cartridge be loaded by flashing the Clean LED. The microcode
waits about 20 seconds for a cartridge to be loaded. The cartridge Must Not be file protected. If a
cartridge is not inserted within the 20 second window, the test fails with the Maintenance LED on solid.
Press UNLOAD to return to Operator Mode. Return to CE Mode and select the option again.
5. If a cartridge is inserted within the 20 second window, the Update Microcode From An FMR Tape
procedure is started and the Maintenance indicator flashes during the procedure.
6. There are two ways to tell if the option ended without success:
a. If the Maintenance LED comes on solid, it indicates an operational error such as the cartridge was
file protected, or the cartridge was not loaded.
b. If a hard error is detected while running any of the options, all three LED's will begin to flash
quickly in unison, then all three LED's will go off approximately one full second before sending out
the FID message in the form of flashing LED's. The CE must keep count of the number of flashes
for each LED to determine which FID is being presented. The LED counts arrive in approximately
1-second intervals. When all the LED's flash in unison again, the count is about to begin again.
This will continue until reset by power off. The FID meanings are shown in Figure 254 on
page PROC-12. Refer also to Figure 253 on page PROC-11 for location of LEDs on drive-only
machines.
7. If loading of the FMR tape was performed within the 20 seconds, and no other problems were
encountered, the Maintenance LED will flash during the FMR update operation.
8. At the successful completion of the FMR update operation, the Maintenence indicator turns off, and
after a few minutes, the Clean LED turns on solid. Wait until the Clean LED turns on before
powering the drive off.
9. At the completion of the read FMR tape (ucode update) operation, power the drive off, then on to
activate the microcode. The FMR tape will be unloaded.
10. Save the FMR tape cartridge in a secure place.
PROC-46
IBM 3570 MI