Rockwell Automation Publication 750-TG100B-EN-P - June 2019 249
Power Bay Components Chapter 9
Power Layer Interface 
Circuit Board Replacement
Replace the power module power layer interface circuit board with kit catalog 
number SK-RM-PLI1-F8.
Two versions of the circuit board tray are released. Each version of the tray uses 
different screw sizes to secure the power layer interface circuit board to the tray. 
Circuit board trays and screw combinations for the power layer interface board 
include:
• Part number PN-371633 contains five M3 x 20 mm slotted-torx screws
• Part number PN-417691 contains five M4 x 18 mm slotted-torx screws
Remove the Power Layer Interface Circuit Board
Follow these steps to remove and replace the power layer interface circuit board.
1. Review the Product Advisories on page 14
.
2. Remove power from the system. See Remove Power from the System on 
page 15
.
3. Open the corresponding power bay enclosure door.
4. Remove the power module from the enclosure. See Power Module 
Replacement on page 236
.
5. Remove the circuit board tray from the power module. See Circuit Board 
Tray  Rem o val o n page 244
.
6. Remove the transceivers from the PDI and CTL ports on the power layer 
interface circuit board. Retain the transceivers for reuse.
7. Remove the five M3 x 20 mm or M4 x 18 mm slotted-torx screws that 
secure the power layer interface circuit board to the standoffs on the circuit 
board tray and remove the circuit board. Retain the screws for reuse.
IMPORTANT The power layer interface circuit board replacement kit excludes screws. 
Therefore, all existing screws for this board must be reused. Verify the screw 
size that is supplied with your circuit board tray and apply the recommended 
torque during reinstallation.