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Brother MFC-J6920DW Service Manual

Brother MFC-J6920DW
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5-33
Confidential
1.3.19 Updating of Paper Feeding Correction Values (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 ASSY 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_BHM13.prn"
and "pfadj2_A4_BHM13.prn" to a USB flash memory or SD card. When using
letter-sized paper, save copies of "pfadj1_LTR_BHM13.prn" and
"pfadj2_LTR_BHM13.prn".
(2) Use Section 1.3.21 "Printout of PRN/JPEG Files in Memory Card (Maintenance
mode 61)" to print test patterns.
Tip: The test patterns can also be printed by opening "Filedrgs" on your PC and
dragging & dropping each of the adjustment files onto the Brother
Maintenance USB Printer driver icon.
For adjustment of all paper feeding correction values
(1) Press the 5 and 8 keys in this order in the initial stage of the maintenance mode.
The "Select 58?" appears on the LCD.
(2) Press the Mono Start key.
The "1. ALL" appears on the LCD.
(3) Press the 1 key.
The "PF_ONLY NO. +0" appears on the LCD.
(4) On the pfadj1 pattern (see page 5-36), check the PF0 row of blocks. 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, press the 4 key with the
"PF_ONLY NO. +0" being displayed on the LCD. If the number is -4, press the
key to display the "
PF_ONLY NO.
-0" and press the
4
key. Then press the
SET
key.
(5) The "PF1 NO. +0" appears on the LCD.
(6) On the pfadj1 pattern (see page 5-36), check each of the PF1 through PF6 rows
sequentially. First, on the PF1 row, select the block that is the least uneven print
and enter the block number. Then press the SET key.
(7) In the same way, enter the number of the least uneven block for each of PF2
through PF6, and then press the SET key.
The "EXT NO. +0" appears on the LCD.
(8) On the pfadj1 pattern (see page 5-36), check the EXIT row of blocks. In the same
way as in step (4), enter the number of the block that is the least uneven print and
then press the SET key.
The "
1.LF300" appears on the LCD.
(9) On the pfadj2 pattern (see page 5-37), check the L300 row of blocks. In the same
way as in step (4), enter the number of the block that is the least uneven print and
then press the SET key.
The "CORFEED NO. +0" appears on the LCD.
(10)On the pfadj2 pattern (see page 5-37), check the CORF row of blocks. Enter the
number of the block that is the least uneven print and then press the SET key.
Press the X key to return the machine to the initial stage of the maintenance mode.

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Brother MFC-J6920DW Specifications

General IconGeneral
Typeall in one
Tray Capacity500
Automatic Document Feeder Capacity35 sheets
Paper Size11" x 17"
Paper Handlingup to 500 sheets
Color Print Speed20 pages per minute
Mono Print Speed22 pages per minute
Print Resolution Monoup to 6000 x 1200
Print Resolution Colorup to 6000 x 1200
Scanner Typeflatbed
Scan Resolutionup to 2400 x 1200
Copier Resolution Monoup to 2400 x 1200
Copier Resolution Colorup to 2400 x 1200
Fax Functionyes
Cartridgeslc103bk/c/m/y
Number Of Cartridges4
Internal Memoryno
Memory Cardyes
Networkwireless
Connectivityusb
OS Compatibilitypc: windows server 2003, server 2003 r2, server 2008, server 2008 r2, server 2012, xp home, xp professional, vista, 7 or 8, mac: os x v10.6x, 10.7x or 10.8x
Mobile Devices Connectionyes
Weight and Dimensions IconWeight and Dimensions
Height21.9 inches
Width17 inches
Net Weight36.4 pounds

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