Apple IMAC User Manual - Page 51
Power Filter Board - mount
UPC - 067540444435
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Basics Power Filter Board - 35 Power Filter Board The power filter board is an EMC filtering board, which is mounted on the logic board/mass storage chassis. It controls the DC power supply connection from the enclosure and sits between the power supply board and the logic board. It is highly unlikely that the power filter board will ever fail, but information about this board is included in the "No Power" section of the Troubleshooting chapter.
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Basics
Power Filter Board - 35
Power Filter Board
The power filter board is an EMC filtering board, which is
mounted on the logic board/mass storage chassis. It controls
the DC power supply connection from the enclosure and sits
between the power supply board and the logic board.
It is highly unlikely that the power filter board will ever
fail, but information about this board is included in the “No
Power” section of the Troubleshooting chapter.