Brother DCP-9045CDN, Service Manual

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Confidential 5-4
1.4.2 Printout of Scanning Compensation Data (Function code 05)
<Function>
The machine prints out the black and white 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 black and white level data and takes in the
scanning compensation reference data.
(1) Take a black and white copy for black and white scanning, and take a color copy for color
scanning.
(2) Press the 0 and 5 buttons in this order in the initial stage of the maintenance mode.
The “PRINTING” will appear on the LCD.
(3) The data type and order to be recorded are as follows. The machine prints out the data
below regardless of black and white or color of the previous scanning.
a) Black and white data graph Records depending on the number of pixels of
the previous scanning
(Each color of R, G and B printed.)
b) GAIN (AFE parameter) (G) 2Byte
c) GAIN (AFE parameter) (B) 2Byte
d) GAIN (AFE parameter) (R) 2Byte
e) Background color
compensated data
1Byte
f) AD data for light source
control
2Byte
g) Temperature in acquisition
of AD data for light source
control
2Byte
h) Black level data (G) 2Byte
i) Black level data (B) 2Byte
j) Black level data (R) 2Byte
k) White level data (G) Depends on the number of pixels of the
previous scanning
l) White level data (B) Depends on the number of pixels of the
previous scanning
m) White level data (R) Depends on the number of pixels of the
previous scanning
(4) Upon completion of recording of the compensation data list, the machine beeps for one
second and returns to the initial stage of the maintenance mode.
Note:
- If an incorrect value is found, the machine prints out the data with the reversal format (white
on black).
- After black and white scanning, the machine prints out the G data only for black and white
level registration. It does not print out the R and B data.
- The white level and black level data are captured at 10/16 bits, and upper 8 bits data of them
is printed.