IBM RS/6000 SP manual Step, SP Switch power MAP

SP Switch power (MAP 0610)

Step 0610-005

When you put the circuit breaker into the On (`1') position, the circuit breaker tripped into the Off (`0') position.

1.Have the customer remove the SP Switch from the active configuration and power off the SP Switch.

2.Put the switch into service position (refer to ªService position proceduresº on page 3-9).

3.Go to ªStep 0610-010º on page 1-16

Step 0610-006

When you put the circuit breaker into the On (`1') position, the circuit breaker stayed in the On (`1') position.

1.From the control workstation or SP Switch, check Power (green) LED for this switch.

2.Is the Power (green) LED lit?

vIf the Power (green) LED is not lit, go to ªStep 0610-007º.

vIf the Power (green) LED is lit:

a.You have resolved the SP Switch problem.

b.Go to ªSP Switch function (MAP 0620)º on page 1-17 and refer to ªStep 0620-043ºon page 1-36.

Step 0610-007

The Power (green) LED is not lit.

1.Check processor nodes or SP Switches on any other dc power harness for any that are powered on.

2.Ensure that the other processor node or SP Switch has its circuit breaker in the On (`1') position.

3.Check the Power (green) LED for an On or Flashing condition.

4.Processor nodes and SP Switches receive 48-volt power from one of five power harnesses. The sets are as follows:

PDU-BH-P1: PDU-BH-P2: PDU-BH-P3: PDU-BH-P4: PDU-BH-P5:

Frame slots 1, 2, 3, 4 Frame slots 5, 6, 7, 8 Frame slots 9, 10, 11, 12 Frame slots 13, 14, 15, 16 Frame slot 17

5.Is the Power (green) LED on other processor nodes or SP Switches On or Flashing? v If yes, go to ªStep 0610-008º.

vIf no, go to ″Main power (MAP 0450)″ in RS/6000 SP: System Service Guide.

Step 0610-008

You found that the Power (green) LED on other processor nodes or switch assemblies is On or Flashing

1.If there is only one SP Switch on the dc power harness, skip the next item and answer ªYesº to the question below.

2.Check all other SP Switches on the same dc power harness as the failing SP Switch and look for the same symptom.

v Look for the circuit breaker on but the Power (green) LED is not lit.

3.Is this the only SP Switch showing this symptom? v If yes, go to ªStep 0610-009º.

v If no, you have a problem with 48 V dc power distribution.

a. Go to ″Open in 48 V dc distribution (MAP 0560)″ in RS/6000 SP: System Service Guide.

Step 0610-009

Only one SP Switch is showing the circuit breaker on but the Power (green) LED is not lit.

1.Check cable connections at the frame power unit (see ªStep 0610-007º) and at the SP Switch bulkhead (BH-J1) for good connections.

2.Are the connections good?

Chapter 1. Maintenance Analysis Procedures (MAPs) 1-15