The system detected a loss of input power to a bulk power
assembly (BPA).
For 9119-FHB,
perform the following steps:
For important safety information before continuing
with this procedure, see Power isolation procedures.
Note: 9119-FHB systems
can be powered by 200 - 480 V ac or 380 - 520 V dc. When measuring
voltage, determine the type of input voltage and set the meter accordingly.
- Is the system powered by 380 - 520 V dc?
- Yes:
- Continue with the next step.
- No:
- Continue with step 3.
- Determine the voltage polarity on the BPA by measuring the voltages
between the labeled test points on the face of the BPA. Connect the
negative lead of the meter to phase A and the positive lead of the
meter to phase B. Is the voltage negative?
- Yes:
- Inform the customer that power voltage at the input to the BPA
needs to be corrected. This ends the procedure.
- No:
- Continue with the next step.
- Measure the voltages between the following labeled
test points on the face of the BPA:
- Phase A and phase B
- Phase B and phase C
- Phase C and phase A
Are all of the meter readings greater than 180 V ac or
330 V dc?
- Yes:
- Continue with the next step.
- No:
- Inform the customer that power voltage at the input to the BPA
needs to be corrected. This ends the procedure.
- Does the problem persist?
- Yes:
- Continue with the next step.
- No:
- This ends the procedure.
- Replace the failing items in the failing item list one at a time
until the problem is resolved. This ends the procedure.
For
9125-F2C, perform
the following steps:
- Is the LED on the BPA near the power cord on?
- Yes:
- Continue with the next step.
- No:
- Inform the customer that the ac voltage at the power outlet is
not correct. This ends the procedure.
- Does the problem persist?
- Yes:
- Continue with the next step.
- No:
- This ends the procedure.
- Replace the failing items in the failing item list one at a time
until the problem is resolved. This ends the procedure.
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