Updating Of Paper Feeding Correction Value - Brother MFC5200C Service Manual

7.5.14 Updating of Paper Feeding Correction Value

Function
To keep the paper feeding performance in the best condition for quality print, the controller
optimizes the rotation of the paper feed roller and paper ejection roller, using the correction value
stored in the EEPROM of the driver PCB.
If you replace the paper feed roller, paper ejection roller, or print head unit of the machine, then
you need to update the paper feeding correction value according to the procedure given here.
TIP: This updating procedure requires a PC for printing out downloaded test patterns. Refer to
Appendix 2, A2.5.
Operating Procedure
(1) Connect the facsimile machine to your PC via the USB, set up your PC and facsimile
machine, and then print out test patterns. Refer to Appendix 2, A2.5.
(2) Press the 6 key twice in the initial stage of the maintenance mode.
The "1.PF ADJUST 2.EXIT ADJUST" appears on the LCD.
(3) Press the 1 key to select the PF roller adjustment.
The "PF ADJ NO.(1-9)" appears on the LCD.
(4) Check the test patterns printed out in step (1). See the next page for a sample printout.
Compare pattern "A" with the PF ADJUST check patterns and select which check pattern is
closest to pattern "A" in unevenness.
If the evenness of pattern "A" is between those of check patterns 1 and 3, regard it as 2, just as
in this sample.
If the unevenness is far to the left of check pattern 1, regard it as 1; If it is far to the right of
check pattern 9, regard it as 9.
(5) Enter the number selected in step (4).
The machine automatically returns to the initial stage of the maintenance mode.
(6) Press the 6 and 6 keys again.
The "1.PF ADJUST 2.EXIT ADJUST" appears on the LCD.
(7) Press the 2 key to select the EXIT roller adjustment.
The "EXIT ADJ NO.(1-9)" appears on the LCD.
(8) Perform the same adjustment as in step (4) for the EJECT ADJUST check patterns and
pattern "B."
The machine automatically returns to the initial stage of the maintenance mode.
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