IBM RS/6000 SP, Maintenance Information

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MAP 0290: 332 MHz SMP Node Environment
017 (continued)
Is the 48 V power supply cable plugged properly?
Yes No
018
Attention: Some 48-volt power cables have in-line circuit breakers. Ensure the in-line circuit
breaker switch is in the Off (O) position before connecting or disconnecting 48-volt power
cables from the node.
Connect the 48 V input cable(s) properly.
– Go to Step 010 on page 1-161.
019
Attention: Some 48-volt power cables have in-line circuit breakers. Ensure the in-line circuit breaker
switch is in the Off (O) position before connecting or disconnecting 48-volt power cables from the
node.
Check for 48 volts present at the 332 MHz SMP processor node end of the input cable(s). Measure
between the voltage and the return pins.
Is there 48 volts present at the connector(s)?
Yes No
020
– Go to Step 048 on page 1-165.
021
Problem with 48 volts sensing.
– Go to Step 044 on page 1-164
022
Is the CPU power assembly green LED On (but not flashing)?
Yes No
023
– Go to Step 027 on page 1-163.
024
The green LED is On.
– Check for airflow blockage and/or fan or cooling problems with the node.
Do any of these problems exist?
Yes No
025
– Verify that you have the correct processor node. Then go to “MAP 0130: Processor Node” on
page 1-30.
026
(Step 026 continues)
1-162
RS/6000 SP MAPs