2. If the system fails to progress after this checkpoint is put in the operator display, do
the following:
a. Activate the service processor pinhole reset switch on the system’s operator
panel.
b. Reboot the system in slow mode. (Slow/fast IPL is set using a service processor
menu.) If the hang repeats, check with service support to see if there is a
system firmware update that fixes this problem.
c. If not, or the update does not fix the problem, call service support.
3. Recovery mode flash update has failed. Do the following:
a. Activate the service processor pinhole reset switch on the system’s operator
panel and try the recovery mode flash update again.
b. If the system hangs again, make a new set of firmware update diskettes, using
new, blank diskettes. Retry the flash update with the new diskettes.
c. If the same hang occurs with the new diskettes, replace the following FRUs one
at a time in this order:
1) Diskette drive
2) CEC backplane, location: U0.1-P1.
d. If this procedure does not fix the problem, call service support.
4. The service processor was unable to configure the modem(s) attached to the serial
port(s) on the CEC backplane (a problem with the modem attached to the HMC is
not indicated). Do the following:
a. Check the modem, modem cable, and serial port for loose or unconnected
cables. Reset the service processor using the pinhole reset switch on the
system’s operator panel.
b. If the hang repeats, check with service support to see if there is a firmware
update that fixes the problem.
c. If there is not, or the update does not fix the problem, replace the following
FRUs, one at a time, in the following order:
1) Modem cable
2) Modem
d. If this procedure does not fix the problem, call service support.
Chapter 4. Checkpoints
133
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