Problem Isolation; Problem Isolation Procedures (Pips) - IBM iSeries Series Hardware Problem Analysis And Isolation
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No: Continue with the next step.
v
26.
Perform the following:
a.
Follow the SPCN frame-to-frame cable back to the preceding unit in the string.
b.
Disconnect the SPCN cable from J16 connector.
c.
Connect the negative lead of a multimeter to the system frame ground.
d.
Connect the positive lead of a multimeter to pin 2 of J16 connector.
Note: Use an insulated probe or jumper when performing the voltage readings.
e.
Note the voltage reading on pin 2.
f.
Move the positive lead of the multimeter to pin 3 of J16 connector.
g.
Note the voltage reading on pin 3.
Figure 9. J16 connector (RV2A179-1)
Is the voltage on both pin 2 and pin 3 from 1.5 V dc to 5.5 V dc?
Yes: Exchange the following FRUs, one at a time (see the Remove and replace procedures).
v
–
SPCN frame-to-frame cable
–
SPCN card (see symbolic FRU "TWRCARD" on page 470) in the failing unit
–
SPCN card (see symbolic FRU "TWRCARD" on page 470) in the preceding unit of the unit
string
This ends the procedure.
v
No: Exchange the SPCN card (see symbolic FRU "TWRCARD" on page 470) from the unit which
you disconnected the SPCN cable in the previous step of this procedure. See the Remove and
replace procedures.
This ends the procedure.
Problem isolation
For use by authorized service providers.
This topic will help you identify and isolate the problem the system is experiencing. You will then be
directed how to resolve the issue.
Symbolic field replaceable units (FRUs), faling items (FIs), and Bus problem isolation procedures (PIPs)
will use the terms "partition" and "logical partition" to indicate any single partition in a system which has
multiple partitions. If the system you are working on does not have multiple partitions, then the terms refer
to the primary partition.
The following sub-topics are included:
v "Problem isolation procedures (PIPs)"
v "Failing items" on page 249
v Symbolic FRUs
Problem isolation procedures (PIPs)
For use by authorized service providers.
Bus, high-speed link (HSL) PIPs
Communications PIPs
Disk unit PIP
Intermittent PIPs
Analyze hardware problems
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