Apple IMAC User Manual - Page 235
Power Supply Board, Ver. 2 - 110, the fuse. Refer to
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Take Apart Power Supply Board, Ver. 2 - 110 Note: There is also a fuse on the AC line on the power supply board. The fuse is located at F901 (near the bottom right corner of the installed power supply board as you are facing the back side of the board). Before replacing the power supply board, test the fuse. Refer to the "Testing for Power" in the iMac Troubleshooting chapter for instructions on how to check the power supply board fuse. This
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Take Apart
Power Supply Board, Ver. 2 - 110
Note:
There is also a
fuse on the AC line on the
power supply board. The
fuse is located at F901
(near the bottom right
corner of the installed
power supply board as
you are facing the back
side of the board).
Before replacing the
power supply board, test
the fuse. Refer to the
“Testing for Power” in
the iMac
Troubleshooting chapter
for instructions on how
to check the power
supply board fuse. This