IBM RS/6000 SP, Maintenance Information

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MAP 0180: Thin Processor Node DC Short/Open
006 (continued)
– Reinstall processor node, then power on the processor node from the control console.
Does this fix the problem?
Yes No
007
Problem still exists.
– Go to Step 009.
008
This adaptor was causing problem.
– Call next level of support.
009
– Clip multimeter leads to the connector pins of N00-PL-J2 for the voltage that shows resistance out of
range.
– Remove affecting components (see chart below) until all components have been removed or resistance
enters acceptable range.
Note: Parts are ordered by probable cause of failure. ‘X’ indicates voltage is used.
The following table refers to I/O Planar jack N00-PL-J2:
Voltage
Measure From
(positive lead) To GND
(negative lead)
Acceptable Range
+5 V dc Pin 1 (red) Pin 2 (black) 5 - 30 Ohms
+12 V dc Pin 3 (yellow) Pin 2 (black) 100 - 5000 Ohms
−
12 V dc Pin 9 (purple) Pin 2 (black) 500 - 900 Ohms
# Component +5 V dc +12 V dc
−
12 V dc
1 CPU card (Thin node or thin node 2) X
2 Memory card (slot A) X
3 Memory card (slot B) X
4 Micro Channel card (slot 1) X X X
5 Micro Channel card (slot 2) X X X
6 Micro Channel card (slot 3) X X X
7 Micro Channel card (slot 4) X X X
8 Ethernet riser card X X X
9 Fixed disk drive(s) X X
(Step 009 continues)
Chapter 1. Maintenance Analysis Procedures (MAPs)
1-85