MAP2890 UPS overcurrent (Model 983)

Use this procedure when the UPS control panel AC input icon is not lit.

About this task

A UPS failure or an overcurrent to one of the J3-J9 output connectors can cause the AC input icon to not be lit.

Procedure

  1. Determine the location of the UPS by using the location code (E61, E62) listed in the serviceable event FRU list or the MAP procedure that sent you here. See Figure 1.
    Figure 1. Locations for the storage controller module in the rack
    Storage controller module (enclosures shown)
  2. Ensure that the overcurrent that trips the UPS breaker is still occurring:
    1. At the rear of the UPS, reset the input breaker by pushing it in. See Figure 2.
    2. Does the input breaker trip?
      • Yes, go to the next step.
      • No, go to sub-step 2.c.
    3. At the front of the UPS, is the control panel AC icon lit?
      • Yes, the overcurrent is not occurring. Exit this MAP and return to the procedure that sent you here.
      • No, the input power cable might not be providing input power. Exit this MAP and return to the procedure that sent you here. Power must be restored to the input power cable before continuing.
    Figure 2. Locations of the UPS (rear)
    Location codes for the UPS (Model 983), rear view
  3. To determine whether the overcurrent is internal or external to the UPS:
    1. Ensure that the J3-J8 UPS output cables are correctly labeled and then disconnect them.
    2. Reset the input breaker by pushing it in.
    3. Does the input breaker trip again?
      • Yes. The failure is internal to the UPS. Exit this MAP and replace the UPS.
      • No, go to the next step.
    Figure 3. UPS power output cables to enclosures
    UPS to enclosure power supply cables (Model 983)
  4. The UPS overcurrent is caused by an overcurrent from one of the power output cables (J3-J8).
    1. Connect the power output cables (J3-J8) one at a time until the UPS input breaker trips. That is the cable with the overcurrent.
    2. Determine the other end of the cable with the overcurrent. Refer to Figure 3, Table 1, Table 2, Table 3, or Table 4.
    3. Disconnect the other end of the power cable.
    4. Reset the UPS input breaker.
    5. Does the input breaker trip again?
      • Yes. The failure is internal to the UPS. Exit this MAP and replace the UPS.
      • No. The failure is in the power supply that the cable was disconnected from. Exit this MAP and replace the enclosure power supply.
    Table 1. UPS to SAS flash enclosure power supply cables (Model 983
    From UPS port To SAS flash enclosure power supply
    E61-J3 I1-F03-P1-E1
    E62-J3 I1-F03-P1-E2
    E61-J4 I1-F04-P1-E1
    E62-J4 I1-F04-P1-E2
    Table 2. UPS to I/O enclosure (2U) power supply cables (Model 983)
    From UPS port To I/O enclosure (2U) power supply
    E61-J5 1G3-E1
    E62-J5 1G3-E2
    Table 3. UPS to CEC enclosure power supply cables (Model 983)
    From UPS port To CEC enclosure power supply
    E61-J6 XC1-E1
    E62-J6 XC1-E2
    E61-J7 XC2-E1
    E62-J7 XC2-E2
    Table 4. UPS to management enclosure power supply cables (Model 983)
    From UPS port To management enclosure power supply port
    E61-J8 E31
    E62-J8 E32