IBM RS/6000 SP, Maintenance Information

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MAP 0110: Supervisor Subsystem
023 (continued)
– Locate the port on the multi-port interface or control workstation connected to this serial cable.
– Run the serial port wrap test on this serial port. Refer to the RS/6000 MAPs located in
Diagnostic Infor-
mation for Micro Channel Bus Systems (SA38-0532).
Did the wrap test pass with this serial cable?
Yes No
024
Cable wrap test failed.
– Install wrap plug (may be p/n 6298966) on this serial port of the control workstation.
– Rerun the serial port wrap test.
Did the wrap test pass without this serial cable?
Yes No
025
Problem isolated to serial port of control workstation (not RS/6000 SP).
– Go to “MAP 0570: End of Call” on page 1-357.
026
– Replace serial cable and repeat cable wrap test.
Did wrap test pass with new serial cable?
Yes No
027
– Call next level of support.
028
– Connect serial cable to frame.
– Perform "Verification Test for Supervisor Bus" in
IBM RS/6000 SP: Maintenance Information,
Volume 3, Locations and Service Procedures.
Does verification test pass?
Yes No
029
Problem with frame supervisor card.
– Go to Step 031.
030
Problem resolved.
– Go to “MAP 0570: End of Call” on page 1-357.
031
Problem with frame supervisor card.
Note: If this frame has a PDU, you will have to remove the cover from the PDU dc section.
– Replace the frame supervisor card (refer to "FRU Removals and Replacements" in IBM RS/6000 SP:
Maintenance Information, Volume 3, Locations and Service Procedures).
(Step 031 continues)
Chapter 1. Maintenance Analysis Procedures (MAPs)
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