MAP 0390: Supervisor Power Problem
020 (continued)
Is ac present and within 340-440 V ac?
Yes No
021
DANGER
High voltage present. Perform “Lockout/Tagout Procedure for PDU” on page 1-2
or “Lockout/Bagout Procedure for PDU” on page 1-3 to remove primary power
to the frame (and high-voltage transformer, if present).
– Replace high-voltage transformer and power cable connecting the high-voltage transformer
to the customer's power.
– Go to Step 049 on page 1-236 to verify fix.
022
– Go to Step 024.
023
– Go to Step 024.
024
DANGER
High voltage present at test points. Use high voltage test probes.
– Put output circuit breaker of the high-voltage transformer in the On (‘1’) position.
– Using a multimeter, check ac phase-to-phase voltage between test points O1 and O2 on ac filter.
Is ac present and within 180-254 V ac?
Yes No
025
Problem with the power not coming into frame.
DANGER
High voltage present. Perform “Lockout/Tagout Procedure for PDU” on page 1-2 or
“Lockout/Bagout Procedure for PDU” on page 1-3 to remove primary power to the
frame (and high-voltage transformer, if present).
– Disconnect RS/6000 SP ac line cord from the high-voltage transformer.
– Using a multimeter, check continuity of the ac line cord from the plug to the test points on the ac
filter.
(Step 025 continues)
1-232
RS/6000 SP MAPs
Summary of Contents for RS/6000 SP
Page 1: ...RS 6000 SP IBM Maintenance Information Volume 2 Maintenance Analysis Procedures GA22 7376 01...
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Page 60: ...MAP 0130 Processor Node Figure 1 7 Thin Node High Level Diagram 1 40 RS 6000 SP MAPs...
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