Brother Laser MFC-4800, Руководство по обслуживанию

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5-5
5.3.2 Printout of Scanning Compensation Data
Function
The equipment prints out the white and black level data for scanning compensation.
Operating Procedure
Do not start this function merely after powering on the equipment but start it after carrying out a
sequence of scanning operation. Unless the equipment 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 equipment initializes white and black level data and takes in the scanning
compensation reference data.
(1) Press the 0 and 5 keys in this order in the initial stage of the maintenance mode.
The "WHITE LEVEL 1" will appear on the LCD.
(2) The equipment prints out the scanning compensation data list containing the following:
a) LED light intensity value (1 byte)
b) A/D-high value (1 byte)
c) Compensation data for background color (1 byte)
d) 2-value quantization black level data (1664 bytes)
e) 2-value quantization white level data (1664 bytes)
(3) Upon completion of recording of the compensation data list, the equipment returns to the
initial stage of the maintenance mode.
NOTE: If any data is abnormal, its code will be printed in inline style, as shown on the next page.