IBM iSeries Series Hardware Problem Analysis And Isolation page 116

1. If the system has logical partitions, perform this procedure from the logical partition that reported the
problem. To determine if the system has logical partitions, go to Determine if the system has logical
partitions.
2. To determine which communications hardware to test, use the SRC from the problem summary form,
or problem log, For details on line description information, see the Starting a Trace section of Work
with Communications Trace in the iSeries Service Functions
3. Perform the following:
a. Vary off the resources.
b. On the Start a Service Tool display, select Hardware service manager —> Logical hardware
resources —> System bus resources —> Resources associated with IOP for the attached
IOPs in the list until you display the suspected failing hardware.
c. Select Verify on the hardware you want to test. The Verify option may be valid on the IOP, IOA, or
port resource. When it is valid on the IOP resource, any replaceable memory will be tested.
Communications IOAs are tested by using the Verify option on the port resource.
4. Run the IOA/IOP test(s). This may include any of the following:
v Adapter internal test
v Adapter wrap test (requires adapter wrap plug - available from IBM or your hardware service
provider).
v Processor internal test
v Memory test
v Serial/parallel port test
Does the IOA/IOP test(s) complete successfully?
v No: The problem is in the IOA or IOP. If a verify test identified a failing memory module, replace the
memory module. On multiple card combinations, exchange the IOA card before exchanging the IOP
card. Exchange the failing hardware (see the Remove and replace procedures).
This ends the procedure.
v Yes: The IOA/IOP is good. Do NOT replace the IOA/IOP. Continue with the next step.
5. Before running tests on modems or network equipment, the remaining local hardware should be
verified. Since the IOA/IOP test(s) have completed successfully, the remaining local hardware to be
tested is the external cable.
Is the IOA adapter type 2838, with a UTP (unshielded twisted pair) external cable?
v Yes: Continue with the next step.
v No: Go to step 8 (See page 104).
6. Is the RJ-45 connector on the external cable correctly wired according to the EIA/TIA-568A standard?
That is,
-Pins 1 and 2 using the same twisted pair,
-Pins 3 and 6 using the same twisted pair,
-Pins 4 and 5 using the same twisted pair,
-Pins 7 and 8 using the same twisted pair.
v Yes: Continue with the next step.
v No: Replace the external cable with correctly wired cable.
This ends the procedure.
7. Do the Line Speed and Duplex values of the line description (DSPLINETH) match the corresponding
values for the network device (router, hub or switch) port?
v No: Change the Line Speed and/or Duplex value for either the line description or the network device
(router, hub or switch) port.
This ends the procedure.
v Yes: Go to step 9 (See page 105).
8. Is the cable wrap test option available as a Verify test option for the hardware you are testing?
104
iSeries: iSeries Server 270, 800, 810, 820, 825, 830, 840, 870, 890, SB2, and SB3 Hardware Problem Analysis and
Isolation
information.