IBM i 830 Repair Manual page 307

33. Exchange the HSL cable currently connected to the port identified in column
'E' in the row with an 'X'. Use symbolic FRU "SIRGCBL" on page 588.
Exchange only the frame to frame (external) cable at this time. Label the new
cable the same as the one you are replacing.
Examine the loop using the "Display HSL Information" screens looking for a
failed "leading link" and stop when you find one. Stop if you have gone all the
way around the loop and come back to the network interface controller (NIC).
Refer to "BUS PIP HSL-02" on page 298 for help when examining the loop.
34. Is there a failed link on the loop at the port identified in column 'E' in the
row with an 'X'?
Yes No
↓
Go to step 40 of this procedure.
35. Determine if there are any interposer cards or ribbon cables connected to the
HSL cable that you just exchanged by performing the following:
v Record the frame types which are connected by the HSL cable. Use
symbolic FRU "SIRGCBL" on page 588 and the frame types you recorded to
determine if there are any HSL interposer cards or cables.
v If you determined there are HSL interposer cards or ribbon cables, then
exchange them before continuing to the next step.
36. Go to step 39 of this procedure.
37. Is the frame type an FC 5077 SPD Migrated Tower?
No Yes
↓
Go to step 42 on page 294 of this procedure.
38. Exchange the HSL I/O Bridge in the frame by performing the following:
a. If the frame is a FC 5033, FC 5034 or FC 5035 SPD Migrated Tower, then
exchange the HSL I/O Bridge using the symbolic FRU "CVTCARD" in the
Migrated Expansion Tower Problem Analysis, Repair and Parts.
b. If the frame is an I/O tower, then exchange the HSL I/O Bridge card by
using symbolic FRU "SIIOADP" on page 585.
c. If the frame is a system unit or base I/O tower, then exchange these FRUs
in the following order:
v HSL Cable (internal cable for Model 830, external cable for Model 840).
See "SIRGCBL" on page 588.
v HSL I/O Bridge (see "SIIOADP" on page 585.)
v Network interface controller (see "SICNTRL" on page 584.)
39. Examine the loop using the "Display HSL Information" screens looking for a
failed "leading link" and stop when you find one. Stop if you have gone all the
way around the loop and come back to the network interface controller (NIC).
Refer to "BUS PIP HSL-02" on page 298 for help in examining the loop.
40. Did you find a failed link anywhere in the loop?
Yes No
↓
The loop is now functioning. Restore all HSL cables to their original
connections. Close the problem.
This ends the procedure.
41. Either you did not repair the original problem or you have discovered a new
problem on the loop.
v Restore all HSL cables to their original connections.
Chapter 3. Problem Isolation Procedures (PIPs), Failing Items, and Symbolic FRU Isolation
Bus, High-Speed Link (HSL) PIPs
293