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(2)
For each device whose status is other than 'Working', invoke a
'Courtesy Down' function followed by a 'Put Into Service' to reboot
that device. Note the following conditions:
a)
The rebooting function for software PRUs resident on an SRU may
lag behind the rebooting function of the actual hardware SRU. For
example, the SRU may indicate a 'Working' status before the PRU.
Allow sufficient time to complete the operation (at least five
minutes).
b)
The SRU/RRU/PRU may need to be rebooted more than once to
restore the status to 'Working'.
c)
The 'Courtesy Down' function is not allowed for units that have
special importance within the system. If such a unit is faulty, then
the entire system must be rebooted. (See 'Rebooting the System',
below.) The restricted units are:
•
the Primary Processor SRU and most core system PRUs
•
the LANlink SRU that supports the system administrator's terminal
•
the system administrator's terminal
•
any PRUs resident on the Primary Processor that support the
System Administrative Services (SAS) menu functions.
(3)
If an RRU continues to have a 'Faulty' status, replace it
Note: Before removing a SCSI (Small Computing Systems
Interface) cable from any equipment, the system must be powered
down.
(4)
After replacing a faulty RRU, reboot the device using the 'Courtesy
Down' and 'Put into Service' functions.
(5)
If an SRU continues to have a 'Faulty' status, power the system down
and replace the SRU.
You must power the system down if you intend to remove or reseat
any SRU, or if you intend to remove a SCSI (Small Computing
Systems Interface) cable from any device.
Troubleshooting and Fault Clearing Procedures 13
- CAUTION -
Practice 450-1011-501
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