IBM RS/6000 SP, Maintenance Information

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MAP 0540: Switch Function
Table 1-13 (Page 6 of 6). Service Request Number (SRN) Table for Switch Adapters
Service Request
Number SRN
Source Failing Component(s) Description
980-225 D HiPS Adapter-1 Adapter hardware read/write
test failed on internal clock.
980-226 D External clock
HiPS Adapter-1
(Wrap plug) Cable wrap network initializa-
tion failure.
Note:
An ‘x’ in an SRN indicates a “don't care” digit.
– Go to Step 024.
024
An SRN was obtained and Table 1-13 on page 1-332 was used to determine the list of possible failing
components.
– From the list of possible failing components, use the following prioritized table to perform service.
Priority Failing Component Action
1 Software 1. Have customer verify that the software is configured
and operating correctly for this processor
node/system.
2. If no problem is found, continue with next highest
priority item in the list for this SRN.
3. Otherwise, power off this processor node and con-
tinue service at Step 034 on page 1-339.
2 External clock 1. Check to see if a switch clock cable is connected at
switch adapter of this processor node.
2. If clock cable exists, reseat switch clock cable; oth-
erwise reseat switch data cable.
3. Run advanced diagnostics on the device “css0”.
4. If diagnostics fail with the previous SRN, check at
least one other processor node for indication of a
clock problem. If necessary, run advanced diagnos-
tics on this other node, using the device “css0”.
5. If more than one node has a clock problem, go to
Step 025 on page 1-338.
6. Replace the switch clock cable or switch data cable
that was just reseated in step 2 above.
7. Continue service at Step 035 on page 1-339.
3 Data cable 1. Reseat switch data cable at switch adapter of this
processor node.
2. Run advanced diagnostics on the device “css0”.
3. If diagnostics fail with the previous SRN, replace
switch data cable.
4. Continue service at Step 035 on page 1-339.
Chapter 1. Maintenance Analysis Procedures (MAPs)
1-337