Remove and Install the DC Precharge Circuit Board for Frames 8...15

Replace the DC precharge module circuit board with the appropriate kit catalog number SK-RM-DCPC1-CD (400V/480V) or SK-RM-DCPC1-EF (600V/690V). Follow these steps to remove and install the DC precharge circuit board.
  1. Review the product advisories in Before You Begin.
  2. Remove power from the system.
  3. Open the corresponding power bay door.
  4. Remove the DC precharge module from the enclosure.
  5. Remove the six M5 x 10 mm Torx screws that secure the circuit board cover to the DC precharge chassis and remove the cover.
    example of how to remove the circuit board cover from the DC precharge module
  6. IMPORTANT: The minimum inside bend radius for fiber-optic cable is 50 mm (2 in.). Any bends with a shorter inside radius can permanently damage the fiber-optic cable. Signal attenuation increases as inside bend radius is decreased.
    fiber-optic cable bend radius example
  7. Without bending the cable to a radius less than 50 mm (2 in.), remove the fiber-optic cable from the transceiver in the DCP port on the DC precharge circuit board.
    IMPORTANT: The end of the transceiver that connects to the inside of the fiber port contains dielectric grease. Do not touch the end of the transceiver.
    example of how to remove the fiber transceiver from a fiber-optic port
  8. Open the transceiver latch and pull the transceiver out of the connector on the board. Retain the transceiver as a spare part.
    TIP: If the latch is obstructed and you cannot use your fingers to open it, use a small, screwdriver or other long, narrow tool to open the latch.
  9. Disconnect these cable connectors from the DC precharge circuit board:
    • P1 from J1
    • P2 from J2
    • P3 from J3
    • P5 from J5
    • P9 from J9
    • P10 from J10
  10. example of the DC precharge circuit board layout
  11. Remove the five M4 x 8 mm slotted-Torx screws that secure the DC precharge circuit board to the standoffs on the chassis. Lift the board up so that the keyholes on the board clear the mounting posts and remove the board.
    example of how to remove the DC precharge circuit board
  12. With the exception of the protective cover on connector J8, remove the protective covers from the connectors on the DC precharge control circuit board.
  13. Install the DC precharge circuit board in the reverse order of removal.
  14. Remove the protective cover from the DCP port on the board.
    Dc precharge circuit board XT cover locations
  15. Remove the remove the new transceiver supplied with the kit from the packing materials.
  16. Remove the protective covers from the transceiver.
    example of how to remove the covers from the ends of a fiber-optic transceiver with XT protection
  17. Without bending the cable to a radius less than 50 mm (2 in.), fully insert the fiber-optic cable into the transceiver.
    example of how to insert a fiber-optic cable into a transceiver
  18. Insert the transceiver and fiber-optic cable into the port on the board, until you hear an audible ‘click.’
    example of how to insert a fiber-optic cable into a fiber-optic transceiver port
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