IBM RS/6000 SP, Maintenance Information

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MAP 0540: Switch Function
051 (continued)
Is the problem switch in a frame with processor nodes?
Yes No
052
Problem switch is in a multi-switch frame.
– From the system monitor on the control workstation, open the “Switch Front Panel” window for
this switch.
– Check the clock selection to see if it is set to “Internal” or to one of the following:
Ÿ
HiPS: “External 1”, “External 2”, or “External 3”
Ÿ
SPS: “Jack3”, “Jack4”, or “Jack5”.
Is the clock selection set to one of the External clocks?
Yes No
053
This switch is providing the master clock for the system.
– Have customer use the Eclock command to select a different master clock for the system.
– Go to Step 101 on page 1-350 to verify fix.
054
– Select a different external clock for this switch assembly.
– From the control workstation of the primary node, enter:
Estart
to reinitialize the switch.
– Check /var/adm/SPlogs/css/out.top file to see if problems are still reported on all data cables
connected to this switch assembly.
Have some of the problems reported on data cables connected to this switch assembly been
resolved?
Yes No
055
Probable problem with switch clock card or switch planar in this switch assembly.
– Replace the clock card in this switch assembly. Make sure to reconnect all cables con-
nected to the clock card.
– Reconnect cables S00-BH-J1, S00-BH-J2, S00-BH-J3, S00-BH-J5, and S00-BH-J7 at
tailgate of this switch assembly.
– Set the switch clock selection on this switch assembly to the original (correct) setting.
– From the control workstation of the primary node, enter:
Estart
to reinitialize the switch.
– Check /var/adm/SPlogs/css/out.top file to see if problems are still reported on all data
cables connected to this switch assembly.
(Step 055 continues)
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RS/6000 SP MAPs