Acquisition Of White Level Data/ Compensation Of Scanning Width (Function Code: 55) - Brother FAX-2840 Service Manual

1.3.16 Acquisition of white level data/
compensation of scanning width (Function code: 55)
<Function>
This function is used to acquire the white level of the scanner unit and save it in the EEPROM of
the main PCB.
Note:
• After Deep Sleep mode is released, execute this function code. If the correct white level
data is not yet acquired, install the latest firmware. If installing the firmware is not
possible, open and close the front cover, and then retry acquisition after the main motor
has stopped.
<Operating Procedure>
(1) Press the [5] button twice in the initial state of the maintenance mode.
(2) "Press START" appears on the LCD. Press the [Start] button.
"SCANNER AREA SET" appears on the LCD.
(3) After a few seconds, the machine saves the compensation value for the white level data/
scanning width in the EEPROM, beeps for one second, and returns to the initial state of
the maintenance mode.
5-26
Confidential