Studio Display XDR Power Supply Board
Before You Begin
Danger
Ensure that the AC power cord isn’t plugged into an electrical outlet.
Remove the following part before you begin:
Tools
Adjustable torque driver (0.3–1.2 Nm)
Adjustable torque driver (1.2–3.0 Nm)
ESD-safe tweezers
Nylon probe (black stick)
Torx Plus 6IP 25 mm bit
Torx Plus 8IP 25 mm bit
Refer to a full list of tools required for all repairs.
Removal
Note: If you’ve already completed the removal steps, skip to reassembly.
Use ESD-safe tweezers to peel the polyester film tab away from the power supply signal flex cable connector on the power supply board.
Use ESD-safe tweezers to flip up the locking lever on the power supply signal flex cable connector. Then slide the end of the flex cable out of the connector.

Use the 0.3–1.2 Nm adjustable torque driver and 6IP bit to remove the four 6IP screws (923-14057) from the bus bar. Then remove the bus bar and save it for reassembly.

Use the 1.2–3.0 Nm adjustable torque driver and 8IP bit to remove ten 8IP screws from the power supply board.
Important: The screw highlighted in green (923-14052) is longer than the other nine power supply board screws (923-14050). Ensure that it’s reinstalled in its original location during reassembly.

Gently lift the power supply board from the housing as shown.
Caution: The AC power inlet flex cable is still connected to the power supply board. Lift the board only enough to access the AC power inlet flex cable connector.

Pinch both sides on the end of the AC power inlet flex cable. Then slide the end of the flex cable out of the connector on the back of the power supply board.

Remove the power supply board from the housing.
Reassembly
Slide the AC power inlet flex cable into the connector on the back of the power supply board.

Position the power supply board onto the housing. Align the screw holes in the power supply board with the screw holes in the housing.
Caution: Ensure that the power supply signal flex cable isn’t trapped under the board.

Set the torque value on the 1.2–3.0 Nm adjustable torque driver to 1.4 Nm. Use the adjustable torque driver and 8IP bit to reinstall ten 8IP screws into the power supply board.
Important: The screw highlighted in green (923-14052) is longer than the other nine power supply board screws (923-14050). Ensure that it’s reinstalled in the location shown.
923-14050 (9)

923-14052 (1)


Position the bus bar on the logic board, aligning the hooks on the bus bar with the notches on the logic board.


Set the torque value on the 0.3–1.2 Nm adjustable torque driver to 0.45 Nm. Use the adjustable torque driver and 6IP bit to reinstall four 6IP screws (923-14057) into the bus bar.


Slide the end of the power supply signal flex cable into the connector on the power supply board. Flip down the locking lever. Then press the polyester film tab onto the end of the flex cable.

Reinstall the following part to complete reassembly: