See Step 15 in online instructions at the link below:
http://www.shareyourrepair.com/2015/08/how-to-fix-brother-mfc-8950-replace-parts-pf-kit-1-error.html
Step 15: Reset the PF Kit 1 Counter
This will clear the "Replace Parts PF Kit 1" error that keeps coming up.
Step 15a: From the main menu simultaneously press both the 3 and 9 keys once.
You must access the secret reset menu to do this. If you don't time it correctly you will set the number of copies. If you do that just press the Stop/Exit button and try again. You DO NOT hold the keys down, just simultaneously press them once:
Simultaneously press the 3 and 9 buttonsIf you do it correctly, you will see the reset menu on the display:
The Secret Reset Menu
Step 15b: Tap "PF Kit1" on the screen.
Tap PF Kit1It will double check and ask you if you want to "Reset PF Kit1?" Tap "Yes."
Tap YesIt should then say "Accepted" to let you know that the counter has been reset:
After tapping yes it will say "Accepted"To get out of the Reset Menu press the Stop/Exit button:
Press the Stop/Exit button to get out of the Reset Menu
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