Printout Of Scanning Compensation Data (Function Code 05) - Brother DCP375CW Service Manual

9.4.2

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. For models
without numerical keypad, enter 0 and 5 in this order using the
Models except DCPJ140W
The machine shows "PRINTING" on the LCD and prints out the scanning compensation
data list (see the next page) containing items a) to l) given below.
DCPJ140W
The "DUMP 0:GRA 1:ALL" appears on the LCD.
To print out the scanning compensation data list (see the next page) containing items a) to
h) given below, press the 0 key; to print it out containing all of a) to l), press the 1 key.
During printing, "PRINTING" appears on the LCD.
a) Black/white data graph
b) LED PWM data for color image (1 byte)
c) LED 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) Background color compensation data (1 byte)
i) Black level data
j) White level data for red image
k) White level data for green image
l) White level data for blue image
(2) Upon completion of recording 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.
*1 DCPJ140W only.
background color compensation (filtering out background color) to be performed
*2 Data for
in monochrome copying of a document printed on colored paper.
*1
*1
*2
9-6
, and OK keys.
*1
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