Studio Display Power Supply Boards
Before You Begin
Danger
Ensure that the power cord is not plugged into an electrical outlet.
Remove the following part before you begin:
Tools
Adjustable torque driver (10–34 Ncm)
Adjustable torque driver (0.3–1.2 Nm)
Alignment pin (3 mm)
Alignment pin (4 mm)
ESD-safe tweezers
Nylon probe (black stick)
Support wedge for tilt-adjustable stand
Support wedge for tilt- and height-adjustable stand
Torx T6 bit
Torx T6 screwdriver
Torx T8 bit
Torx T8 screwdriver
Removal
Important
Ensure that the support wedge is between the housing and the stand to keep the display in place.
Use the T6 screwdriver to remove the two T6 screws (923-07141) from the power supply bus bar. Remove the bus bar and save it for reassembly.
Use the T6 screwdriver to remove the four T6 screws (923-07141) from the logic board bus bar between the DC power supply board and the logic board. Then remove the bus bar.
Pinch the sides of one end of the power supply signal cable and slide it out of the connector. Then repeat this step on the other end of the power supply signal cable.
Use ESD-safe tweezers to peel back the polyester film tab on the power supply signal flex cable.
Use the black stick to flip up the locking lever on the power supply signal flex connector. Then slide the end of the flex cable out of the connector.
Starting with the DC power supply board on the right, use the T8 screwdriver to remove the six T8 screws (923-07143). Then remove the DC power supply board.
Important: If you’re replacing the power supply boards, continue to step 7. If you’re removing the power supply boards for a different procedure, skip to step 9.
Use ESD-safe tweezers to peel back the polyester film tab on the power supply signal flex cable.
Use the black stick to flip up the locking lever. Then slide the end of the power supply signal flex cable out of the connector.
Use the T8 screwdriver to remove the six T8 screws (923-07143) from the PFC (Power Factor Controller) power supply board on the left.
Use the black stick to lift the left side of the PFC power supply board from the housing. At the back of the board, pinch the levers at the end of the power cord port cable. Then slide the end of the cable out of the connector. Remove the PFC power supply board from the housing.
Reassembly
Install the 4 mm alignment pin in the upper left screw hole in the left side of the housing (1). Then install the 3 mm alignment pin in the upper right screw hole (2).
Slide the end of the power cord port cable into the connector on the back of the PFC power supply board.
Position the board into the housing using the alignment pins. Use the T8 screwdriver to partially reinstall the four T8 screws (923-07143).
Insert the Torx T8 bit into the 0.3–1.2 Nm adjustable torque driver. Set the torque value to 0.8 Nm.
Use the adjustable torque driver and the Torx T8 bit to fully reinstall the four T8 screws.
Remove the two alignment pins (1, 2). Then use the T8 screwdriver to partially reinstall two T8 screws (923-07143) into the PFC power supply board (1, 2).
Keep the Torx T8 bit in the 0.3–1.2 Nm adjustable torque driver. Ensure that the torque value is still set to 0.8 Nm.
Use the adjustable torque driver and the Torx T8 bit to fully reinstall the two T8 screws.
Install the 3 mm alignment pin in the upper left screw hole in the right side of the housing (1). Then install the 4 mm alignment pin in the upper right screw hole (2).
Important: If you’re replacing the power supply boards, continue to step 10. If you removed the power supply boards as part of another procedure, skip to step 11.
Turn over the DC power supply board to reinstall the original power supply signal flex cable. Slide the end of the flex cable into the connector. Use the flat end of the black stick to flip down the locking lever. Then press the polyester film tab to adhere it to the flex cable.
Position the DC power supply board in the housing. Then use the T8 screwdriver to partially reinstall four T8 screws (923-07143) as shown.
Keep the Torx T8 bit in the 0.3–1.2 Nm adjustable torque driver. Ensure that the torque value is still set to 0.8 Nm.
Use the adjustable torque driver and the Torx T8 bit to fully reinstall the four T8 screws.
Remove the two alignment pins. Then use the T8 screwdriver to partially reinstall two T8 screws (923-07143) into the DC power supply board.
Keep the Torx T8 bit in the 0.3–1.2 Nm adjustable torque driver. Ensure that the torque value is still set to 0.8 Nm.
Use the adjustable torque driver and the Torx T8 bit to fully reinstall the two T8 screws.
Position the power supply bus bar on the power supply boards. Then use the T6 screwdriver to partially reinstall the two T6 screws (923-07141) into the power supply bus bar.
Important: Ensure that the notches on the bus bar aligns with the openings in the power supply boards.
Insert the Torx T6 bit into the 10–34 Ncm adjustable torque driver. Set the torque value to 20.5 Ncm.
Use the adjustable torque driver and Torx T6 bit to fully reinstall the two T6 screws.
Position the logic board bus bar between the logic board and DC power supply board. Then use the T6 screwdriver to partially reinstall the four T6 screws (923-07141).
Important: Ensure that the hooks on the bus bar align with the notches on the logic board as shown.
Keep the Torx T6 bit in the 10–34 Ncm adjustable torque driver. Ensure that the torque value is still set to 20.5 Ncm.
Use the adjustable torque driver and Torx T6 bit to fully reinstall the four T6 screws.
Slide the end of the power supply signal flex cable into the connector. Use the black stick to flip down the locking lever. Then press the polyester film tab to adhere it to the flex cable.
Slide both ends of the power supply signal cable into the connectors on the power supply boards.
Reinstall the following part to complete reassembly: