Bus Pip Hsl-01 - IBM iSeries Series Hardware Problem Analysis And Isolation

the FRU locations and failing components table in Locations — Models 840, SB3 system unit
with processor tower and FC 9079 Base I/O Tower. Then, power on the system.
This ends the procedure.
v For Models 870 or 890: The console IOP is in the base I/O tower for the system unit. Exchange
the IOP in card position C01 and then, power on the system. See Locations - Models 870 and 890
with an FC 9094 Base I/O Tower for locations information, diagrams, and links to remove and
replace procedures.
This ends the procedure.
Bus PIP HSL-01: For use by authorized service providers.
Bus PIP HSL-01, high-speed link - Failure isolation.
Use this procedure to isolate a failure in an HSL loop using HSM or the SAL.
Note: During this procedure, you will be disconnecting and reconnecting cables. If errors concerning
missing resources occur, such as disk units and HSL failures, ignore them. Missing resources will report in
again when the loop reinitializes.
Main task:
1. Before powering down any system unit or I/O tower, work with the customer to end all subsystems in
all of the partitions using each partition's console.
2. From the Primary partition, IPL the system to DST. Do not use function 21!
3. Be sure all I/O towers and system units on the loop are powered on. If some frames were powered off,
determine whether the HSL link error was cleared up when the frames were powered back on. If the
error was cleared up, go to Verify the repair. If a frame cannot become powered on, see the "Cannot
power on frame" on page 81 subtask in this document, then continue with the next step of the Main
task.
4. Access the SAL entry for this error, the FRUs should be listed there. Look for part numbers and
descriptions for the FRUs containing the HSL port for two frames. There should also be a FRU for the
cable between them. The locations information for the FRUs is the location of the failed ports on the
failed link.
If this information is not in the SAL, see "Manually detecting the failed link" on page 81 subtask in this
document, then continue with the next step of the Main task.
5. If the cable connecting the failed ports is an optical cable, clean the HSL cable connector and port
using the tools and procedures listed in symbolic FRU "OPT_CLN" on page 407. If that clears up the
error, go to Verify the repair. If not, continue with the next step.
6. There are now three cases to consider, continue with the appropriate branch:
v "The ports on both ends of the failed link are in a system unit."
v "The port on one end of the failed link is in a system unit and the port on the other end is in an I/O
tower" on page 80.
v "The ports on both ends of the failed link are in an I/O tower" on page 80.
The ports on both ends of the failed link are in a system unit:
1. There may be failed hardware that will report a different error on the other system unit. Work any other
HSL problems in the SAL on the other system unit. If the failed link error was cleared up when another
HSL error was corrected, go to Verify the repair.
2. Replace the cable between the two system unit ports on the failed link. If the error was cleared up by
exchanging the cable, go to Verify the repair. If not, continue with the next step.
3. Exchange the FRU containing the HSL port on the failed link in one of the system units (usually the
quickest and easiest to replace). If the error was cleared up by exchanging the FRU containing the
HSL port, go to Verify the repair.
Analyze hardware problems
79