Dell PowerEdge R840 EMC Installation and Service Manual - Page 136

Power Interposer Board

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Power Interposer Board The Power Interposer Board (PIB) is a board that connects the hot swappable power supply units (PSUs) to the system board. Removing Power Interposer Board Prerequisites 1. Follow the safety guidelines listed in Safety instructions on page 44. 2. Follow the procedure listed in Before working inside your system on page 45. 3. Remove the applicable air shroud: a. Non-GPU air shroud b. Expansion card riser 2 OR a. GPU air shroud b. Expansion card riser 2 4. Remove the power supply units CAUTION: To prevent damage to the power interposer board, you must remove the power supply module (s) or power supply blank from the system before removing the power interposer board or power distribution board. Steps 1. Disconnect the cables connected from the power interposer board (PIB) to the system board, and remove the cables from the cable retention brackets. NOTE: Observe the routing of the cable as you remove it from the system. Route the cable properly when you replace it to prevent the cable from being pinched or crimped. 2. Using a Phillips #2 screwdriver, remove the screw securing the PIB to the system. 3. Holding the blue touch point on the PIB, gently lift, to release it from the PSU cage, and slide it out. 4. Lift the PIB away from the system. Figure 108. Removing power interposer board 136 Installing and removing system components

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Power Interposer Board
The Power Interposer Board (PIB) is a board that connects the hot swappable power supply units (PSUs) to the system board.
Removing Power Interposer Board
Prerequisites
1.
Follow the safety guidelines listed in
Safety instructions
on page 44.
2.
Follow the procedure listed in
Before working inside your system
on page 45.
3.
Remove the applicable air shroud:
a.
Non-GPU air shroud
b.
Expansion card riser 2
OR
a.
GPU air shroud
b.
Expansion card riser 2
4.
Remove the power supply units
CAUTION:
To prevent damage to the power interposer board, you must remove the power supply module (s) or
power supply blank from the system before removing the power interposer board or power distribution board.
Steps
1.
Disconnect the cables connected from the power interposer board (PIB) to the system board, and remove the cables from the cable
retention brackets.
NOTE:
Observe the routing of the cable as you remove it from the system. Route the cable properly when you
replace it to prevent the cable from being pinched or crimped.
2.
Using a Phillips #2 screwdriver, remove the screw securing the PIB to the system.
3.
Holding the blue touch point on the PIB, gently lift, to release it from the PSU cage, and slide it out.
4.
Lift the PIB away from the system.
Figure 108. Removing power interposer board
136
Installing and removing system components