Brother DCP-J552DW, Service Manual

Page: 304 / 329

5-72 Confidential
 Selectors 5 and 6: Assurance print 1 and 2
Enabling assurance print 1 causes the machine to mix black ink (pigment-based) and a little of
cyan ink (dye-based) to use in "monochrome copy."
Enabling assurance print 2 causes the machine to mix black ink (pigment-based) and a little of
cyan ink (dye-based) to use in "monochrome FAX reception" and "list output".
If black ink is not jetted out normally, cyan ink can be substituted for black ink in printing. This
ensures that in list printing (in which data once printed will be deleted) the data will be
preserved as a printout.

Selectors 7 and 8: Workaround for false jam detection (Functional restriction on
the paper width sensor)
The setting made by these selectors applies to the FAX, list, index printing and test printing.
When logo printed recording paper is used, for example, the paper width sensor might
misdetect the paper present state as "no paper loaded" due to the logo's color. Limiting the
paper width sensor functions with these selectors avoids detecting such a false paper jam.
AMS02 (Printing Assurance 2)
 Selectors 3 to 5: Calibration of feed volume when using photo tray in printing
When using a photo tray in printing, the correction function is usually enabled to prevent
banding (horizontal striping) at the leading edge of the paper.
 Selector 6: Registration time offset to slipping in plain paper feeding
Enabling the registration time offset with this selector increases the registration time (during
which the paper feed roller rotates in the reverse direction), avoiding the occurrence of a paper
feeding timeout error even if the paper cannot reach the registration sensor actuator within the
predetermined registration time due to slipping of the paper pulling rollers against paper in the
paper tray.
Selecting the "Fast" print quality disables the registration time offset even if it is enabled with
selector 1.
Note: Selecting the "Glossy paper" automatically enables the registration time offset.
Selector
No.
Function Setting and Specifications
1
|
2
Not used
3
|
5
Calibration of paper feed volume
(Banding workaround for leading edge
of paper when photo tray is in use) No. 345
000: Set calibration when using 4x6 card
to enable (default)
100: Set calibration when using Photo L
to enable
For situations other than the above: disable
6
Registration time offset to slipping in
plain paper feeding
0: Disable (default) 1: Enable
7
Unidirectional print (for higher print
quality)
0: Disable (default) 1: Enable
8 Improvement of paper feeding reliability 0: Disable (default) 1: Enable