IBM RS/6000 SP, Maintenance Information

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MAP 0120: Supervisor Bus Problem
019 (continued)
– Put main power switch at the front of the frame in the Off (‘0’) position.
Is there a cable connected at both PDU-BH-J7 and PDU-BH-J8?
Yes No
020
– Go to Step 022 on page 1-23.
021
– Use the following table to continue service:
Priority Component Action
1 PDU-BH-P7
(if present) 1. Disconnect cable from PDU bulkhead.
2. If frame supervisor LED #4 (top yellow LED) or
LED #6 (if twin-tail) stops FLASHING, go to Step
022 on page 1-23; otherwise reconnect cable and
continue at Priority 2.
2 PDU-BH-P8
(if present) 1. Disconnect cable from PDU bulkhead.
2. If frame supervisor LED #4 (top yellow LED) or
LED #6 (if twin-tail) stops FLASHING, go to Step
022 on page 1-23; otherwise, reconnect cable and
continue at Priority 3.
3 Cable Assembly (PDU Only)
Ÿ PDU-FC-P406
Ÿ
PDU-FC-P408
1. Check PDU-BH-J7 and PDU-BH-J8 (bulkhead)
connections to PDU-FC-J406 and J408 (connector
card).
2. If frame supervisor LED #4 (top yellow LED) or
LED #6 (if twin-tail) stops FLASHING, go to Step
053 on page 1-29; otherwise, continue at Priority
4.
4 Connector card (PDU Only) 1. Replace card.
2. If frame supervisor LED #4 (top yellow LED) or
LED #6 (if twin-tail) stops FLASHING, go to Step
053 on page 1-29; otherwise, continue at Priority
5.
5 Backplane card (PDU Only) 1. Replace card.
2. If frame supervisor LED #4 (top yellow LED) or
LED #6 (if twin-tail) stops FLASHING, go to Step
053 on page 1-29; otherwise, continue at Priority
6.
6 SEPBU Chassis
(SEPBU Only) 1. Replace chassis.
2. If frame supervisor LED #4 (top yellow LED) or
LED #6 (if twin-tail) stops FLASHING, go to Step
053 on page 1-29; otherwise, continue at Priority
7.
7 All components replaced. Call next level of support.
022
(Step 022 continues)
1-22
RS/6000 SP MAPs