IBM i 830 Repair Manual page 341

v Serial/parallel port test.
Does the IOA/IOP test(s) complete successfully?
No Yes
↓
The IOA/IOP is good. Do NOT replace the IOA/IOP. Go to step 5 of
this procedure.
4. 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 "Chapter 4. Removal and Installation
Procedures" on page 617).
This ends the procedure.
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?
Yes No
↓
Go to step 9 of this procedure.
6. Is the RJ-45 connector on the external cable correctly wired according to the
EIA/TIA-568A standard? i.e.
-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.
Yes No
↓
Replace 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?
No Yes
↓
Go to step 10 on page 328 of this procedure.
8. 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.
9. Is the cable wrap test option available as a Verify test option for the hardware
you are testing?
Yes No
↓
Go to step 11 on page 328 of this procedure.
Verify the external cable by running the cable wrap test.
Note: A wrap plug is required to perform the cable wrap test. This wrap plug
is available from IBM or your Hardware Service Provider.
Chapter 3. Problem Isolation Procedures (PIPs), Failing Items, and Symbolic FRU Isolation
Communications PIPs
327