IBM RS/6000 SP, Maintenance Information

Page: 78 / 388

MAP 0140: Thin Node/Thin Node 2 Environment
– Check memory SIMMs for obvious problems. Replace any suspect memory SIMM(s).
– Replace base memory card, transferring all good memory SIMMs from the original card to
the new one.
– Go to Step 054.
048
– Fix obvious problem. As required, replace any damaged parts.
– Go to Step 054.
049
Probable problem with node supervisor or +4 V daughter card.
– Check for an obvious problem with jumper card b4 V daughter card N00-DP-J203 and node
supervisor card N00-NS-J103 (such as a loose connection).
Is there an obvious problem?
Yes No
050
– R4 V daughter card.
– If suspected of a problem, replace the jumper card.
– Restore processor node, by performing steps in Step 054, then return to this step to continue.
Is the environmental (yellow) LED ON or FLASHING?
Yes No
051
Problem resolved.
– Go to “MAP 0570: End of Call” on page 1-357.
052
– Replace node supervisor card.
– Go to Step 054.
053
– Fix obvious problem. As required, replace damaged components.
– Go to Step 054.
054
Component replaced or reseated.
– Make sure all cables and components are connected inside processor node.
– Remove processor node from service position.
– Reconnect all cables at rear of the processor node.
– Put circuit breaker at the front of the processor node in the On (‘1’) position.
– Check the environmental (yellow) LED for an ON or FLASHING condition.
(Step 054 continues)
1-58
RS/6000 SP MAPs