IBM RS/6000 SP, Maintenance Information

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MAP 0130: Processor Node
MAP 0130: Processor Node
The Uniprocessor thin and wide processor nodes have two LEDs on the front of each node.
Uniprocessor wide processor nodes also have a duplicate pair of LEDs at the rear of the node. Their
definitions are as follows:
Environment (Yellow)
Off No environmental problems detected by node supervisor card.
On Warning of environmental condition out of nominal range. Preventative Maintenance should
be scheduled for this node.
Flashing Serious environmental condition detected; power shut off.
Power (Green)
Off No 48 V dc power available at processor node.
Flashing Power available at processor node, but RS/6000 logic is Off.
On Power available at processor node, and RS/6000 logic is On.
The 604 or 604e high node supervisor card LED definitions are shown in the following table and in
Figure 1-4 on page 1-31.
Table 1-3. 604 or 604e High Node LED Definitions
LED # Color Signifies
8 Not used
7 Not used
6 Not Used
5 Yellow Environment status
4 Green Key mode (Normal)
3 Green Key mode (Secure)
2 Green Key mode (Service)
1 Green Node power status (same as wide node green LED)
Note: When LED #1 is Off and LED #5 is On, this indicates that base code is active.
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RS/6000 SP MAPs