ACMODUL

If the system or expansion unit that exhibited the power loss starts normally, or stays powered on after an ac power failure, replacement of parts might not be needed. Power failures can be caused by brown outs, building or room power receptacle power loss, loose or disconnected power cords, or possible hardware conditions.

1. Is the failing unit configured with a redundant power supply option (or dual line cord feature)?
   • No: Continue with the next step.
   • Yes: A service representative must perform power isolation procedure PWR1911.
2. Are all the units powered on?
   • Yes: This error might have been caused by an ac power outage. If the system starts without an error, no parts need to be replaced. This ends the procedure.
   • No: On the unit that does not power on, verify that the power outlet is supplying the correct power for the unit. Also, ensure that both ends of the power cord (from the unit that does not power on) are connected correctly and securely.

     If you find a problem, correct the problem. This ends this procedure.

     If you cannot find the problem, continue with the next step.

     Note: In an 8203-E4A, 8204-E8A, 8261-E4S, 9407-M15, 9408-M25, or 9409-M50 system, there are two internal ac power cables that run from the back of the drawer to the power supplies in the front. The upper ac power connector on the back of the system goes to power supply E1. The lower ac power connector on the back of the system goes to power supply E2.

3. A trained service representative must verify the voltage at the system end of the power cord with a multimeter to verify that the voltage is correct according to the following table.

   Model or expansion unit	Correct voltage
   5796, 7314-G30, 8204-E8A, 9409-M50	200 - 240 V ac or 200 - 220 V dc
   8203-E4A, 8261-E4S, 9117-MMA, 9406-MMA, 9407-M15, 9408-M25, 5802, 7311-D11, 7311-D20	200 - 240 V ac

   Is the voltage correct?

   • Yes: Continue with the next step.
   • No: Go to the step 5.
4. Replace the failing power supply. Use the following table to determine the part number for the field replaceable unit (FRU).

   CCIN or FFC	Type and model	Part number	Description	Location code
   	9406-MMA, 9117-MMA	See Finding parts, locations, and addresses.	Power supply 1	Un-E1
   	9406-MMA, 9117-MMA	See Finding parts, locations, and addresses.	Power supply 2	Un-E2
   	8203-E4A, 8261-E4S, 9407-M15, 9408-M25	44V4195	Power supply 1 (ac supply)	Un-E1
   	8203-E4A, 8261-E4S, 9407-M15, 9408-M25	44V4195	Power supply 2 (ac supply)	Un-E2
   	8204-E8A, 9409-M50	44V3559	Power supply 1 (ac supply)	Un-E1
   	8204-E8A, 9409-M50	44V3559	Power supply 2 (ac supply)	Un-E2
   	8204-E8A, 9409-M50	42R6607	Power supply 1 (dc supply)	Un-E1
   	8204-E8A, 9409-M50	42R6607	Power supply 2 (dc supply)	Un-E2
   	5790, 7311-D11	22R3958	Power supply 1	Un-E1
   	5790, 7311-D11	22R3958	Power supply 2	Un-E2
   	0595, 5095, 7311-D20	39J2781	Power supply 1	Un-E1
   	0595, 5095, 7311-D20	39J2781	Power supply 2	Un-E2
   	5796, 7314-G30	42R4491	Power supply 1	Un-E1
   	5796, 7314-G30	42R4491	Power supply 2	Un-E2
   	5094, 5096, 5294, 5296	39J5273	Power supply 0	Un-P00
   	5094, 5096, 5294, 5296	39J5273	Power supply 1	Un-P01
   	5094, 5096, 5294, 5296	39J5273	Power supply 2	Un-P02
   	5094, 5096, 5294, 5296	39J5273	Power supply 3	Un-P03
   	5094, 5096, 5294, 5296	39J5171	AC module A01	Un-A01
   	5094, 5096, 5294, 5296	39J5171	AC module A02	Un-A02
   	5802	See Finding parts, locations, and addresses.	Power supply 1	Un-E1
   	5802	See Finding parts, locations, and addresses.	Power supply 2	Un-E2

5. Complete the following steps:
   1. Disconnect the power cord from the customer's power outlet.
   2. Use a multimeter to measure the voltage at the customer's power outlet.

      Is the voltage correct?

      • Yes: Replace the failing power cord. This ends the procedure.
      • No: Complete the following steps:
        1. Inform the customer that the voltage at the power outlet is not correct.
        2. After the voltage at the power outlet is correct, reconnect the power cord to the power outlet. This ends the procedure.