Brother MFC-J6510DW, Service Manual

Page: 313 / 394

5-9 Confidential
5.1.4.3 Printout of Scanning Compensation Data (Function code 05)
„
Function
The machine prints out the white and black level data for scanning compensation.
„
Operating Procedure
Do not start this function merely after powering on the machine but start it after carrying out a
sequence of scanning operation. Unless the machine has carried out any scanning operation,
this function cannot print out correct scanning compensation data. This is because at the start of
scanning operation, the machine initializes white and black level data and takes in the scanning
compensation reference data.
NOTE: If this function is used after monochrome scanning, only the green data is valid.
NOTE: Be sure to disconnect the USB cable from the machine before proceeding to the
procedure below.
(1) Press the 0 and 5 keys in this order in the initial stage of the maintenance mode.
Simplex scanning models
The "DUMP 0:GRA 1:ALL" appears on the LCD.
Duplex scanning models
The "CIS 0:FB 1:ADF" appears on the LCD. To print compensation data for the first side
scanning CIS, press the
0 key; to print for the second side scanning CIS, press the 1 key.
The LCD shows "DUMP 0:GRA 1: ALL."
(2) Press the 0 key to print out a) through k) of the scanning compensation data list detailed
below and shown on the next page; press the 1 key to print out all of a) through o).
During printing, the "PRINTING" is displayed on the LCD.
The scanning compensation data list contains the following:
a) Black/white data graph
b) LED light intensity PWM data for color image (1 byte)
c) LED light intensity PWM data for monochrome image (1 byte)
d) LED light intensity pulse data for green image (2 bytes)
e) LED light intensity pulse data for blue image (2 bytes)
f) LED light intensity pulse data for red image (2 bytes)
g) LED light intensity pulse data for monochrome image (2 bytes)
h) AFE RLCV
*1
data (1 byte)
i) AFE offset data (1 byte)
j) AFE gain data (1 byte)
k) Background color compensation data
*2
(1 byte)
l) Black level data
*3
m)White level data for red image
*3
n) White level data for green image
*3
o) White level data for blue image
*3
*1
AFE: Analog Front End
RLCV: Reset Level Clamp Voltage
*2 Data for
background color compensation (filtering out background color) to be performed in
monochrome copying of a document printed on colored paper.
*3
Last scanned data, any of the 3,504 bytes in 300 dpi, 7,016 bytes in 600 dpi, or 14,040 bytes in
1,200 dpi, 28,080 bytes in 2,400 dpi.
(3) Upon completion of printing of the compensation data list, the machine returns to the initial
stage of the maintenance mode.
NOTE: If any data is abnormal, its code will be printed in inline style.