IBM RS/6000 SP Switch User Manual


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Step 0620-013
An SRN listed in Table 1-9 on page 1-24 indicated that you have a switch clock problem and Priority 2 in
Table 1-10 on page 1-27 directed you to this step.
1. Check the switch clock selections on the “problem” switches .
2. Do the clock settings on the “problem” SP Switches appear to be okay?
v If yes, go to “Step 0620-014”.
v If no
a. Change the clock selections on the appropriate switches (refer to “Selecting appropriate switch
clocks” on page 3-6).
b. Go to “Step 0620-043” on page 1-36 to verify fix.
Step 0620-014
The clock settings on the “problem” SP Switches appear to be okay.
1. Is an external clock selected?
v If yes, go to “Step 0620-016”.
v If no, go to “Step 0620-015”.
Step 0620-015
An external clock is not selected. This indicates that you have a defective master clock card.
1. Is this the only switch in this system?
v If yes:
a. Replace the switch assembly.
b. Go to “Step 0620-043” on page 1-36 to verify fix.
v If this is not the only switch in this system, go to “Step 0620-016”.
Step 0620-016
The system you are working on either has an external clock or the system uses more than one switch.
1. Have the customer select an alternate clock (via the Eclock command.
2. Issue the Estart command.
3. Does the switch run?
v If yes, go to “Step 0620-018”.
v If no:
a. Replace the switch assembly.
b. Go to “Step 0620-043” on page 1-36 to verify fix.
Step 0620-017
An SRN listed in Table 1-9 on page 1-24 indicated that you have a software problem and Priority 1 in
Table 1-10 on page 1-27 directed you to this step.
1. From the node front panel on the control workstation, put the node in the SERVICE mode.
2. Power-on this processor node.
3. Go to “Step 0620-018”.
Step 0620-018
At this point, you must run the advanced diagnostics in service mode on the device “css0” and its
associated switch port.
1. Did you get an SRN from the diagnostics?
v If yes, go to “Step 0620-020” on page 1-29.
v If no, go to “Step 0620-019” on page 1-29.
SP Switch function (MAP 0620)
1-28
RS/6000 SP: SP Switch Service Guide
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