5-31
Confidential
1.4.17 Updating of Paper Feeding Correction Value (Maintenance mode 58)
<Function>
To match the paper feeding amount with the head nozzle pitch, the machine optimizes the
rotations of the paper feed roller and paper ejection roller, using the correction values
stored in the EEPROM on the main PCB.
If you replace the Head/carriage unit or main PCB or remove the engine-related parts, you
need to update the paper feeding correction values according to the procedure given
below.
<Operating Procedure>
For printout of test patterns
(1)
On your PC, when using A4-sized paper, save copies of "pfadj1_A4_BHmini13_Low.prn"
and "pfadj2_A4_BHmini13_Low.prn".
When using letter-sized paper, save copies of "pfadj1_LTR_BHmini13_Low.prn" and
"pfadj2_LTR_BHmini13_Low.prn".
(2) Print the test patterns by opening [Filedrgs] on your PC and dragging & dropping the
above adjustment files in the order of pfadj1 and pfadj2 onto the Brother Maintenance
USB Printer driver icon.
For adjustment of all paper feeding correction values
(1) Enter [5] and [8] in the initial stage of the maintenance mode.
The machine displays "Select 58?" on the LCD.
(2) Press the [Mono Start].
The machine displays "1.ALL" on the LCD.
(3) Enter [1].
The machine displays "PF_ONLY NO. +0" on the LCD.
(4) On the pfadj1 pattern (refer to page 5-34), check the blocks of PF0 row. Select the
block that is the least uneven print and enter the block number. For example, if the
number of the least uneven block is +4, enter [4] with the "PF_ ONLY NO. +0" being
displayed on the LCD. If the number is -4, press [ ] to display the "PF_ONLY NO. -0"
and enter [4]. Then press the [SET] or [OK]. The machine displays "PF1 NO. +0" on
the LCD.
(5) On the pfadj1 pattern (refer to page 5-34), check the blocks of PF1 to PF6 rows. First,
on the PF1 row, enter the number of the block that is the least uneven print and enter
the block number. Then press [SET] or [OK].
(6) In the same way, enter the number of the least uneven block for rows PF2 through
PF6, and then press the [SET] or [OK]. The machine displays "EXT1 NO. +0" on the
LCD.
(7) On pfadj1 and 2 patterns (refer to page 5-34), check the blocks of EX rows. In the
same way as in step (4), enter the number of the least uneven block for rows EX1 and
EX2, and then press the [SET] or [OK]. The machine displays "1.ALL" on the LCD.
(8) Press the [Stop] or the [X] to return the machine to the initial stage of the maintenance
mode.
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