Acquire White Level Data And Set Cis Scan Area (Function Code: 55) - Brother DCP-L5500D Service Manual

1.3.18 Acquire white level data and set CIS scan area (function code: 55)

<Function>
This function is used to acquire the white level of the CIS unit, and store this data and the
scan area in the EEPROM of the main PCB.
<Operating Procedure>
(1) Press the [5] key twice in the initial state of maintenance mode. "Press START" is
displayed on the LCD.
(2) Press the [Mono Start] key. "SCANNER AREA SET" is displayed on the LCD, and the
white level data is obtained.
(3) After several seconds, the compensation value for the white level data/scanning width is
stored in the EEPROM, and the machine returns to the initial state of maintenance
mode. If any error is detected during this operation, "SCANNER ERROR" is displayed
on the LCD for single-side scanning models, and "SCANNER ERR ADF" or "SCANNER
ERR FB" is displayed for duplex scanning models. Pressing the [X] or [Stop] key in this
occasion returns the machine to the initial state of maintenance mode.
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