Brother DCP-7055 Service Manual page 253

CHAPTER 4 ADJUSTMENTS AND UPDATING OF SETTINGS,
REQUIRED AFTER PARTS REPLACEMENT
This chapter describes adjustments and updating of settings, which are required if the main
PCB ASSY and some other parts have been replaced. This chapter also covers how to
update the firmware.
1. IF YOU REPLACE THE MAIN PCB ASSY................................................................... 4-1
1.1 Rewriting the firmware (Sub firmware, Main firmware).......................................... 4-2
1.1.1 Checking firmware version ......................................................................... 4-2
1.1.2 Rewriting the firmware using computer ...................................................... 4-2
1.2 Initialization of EEPROM of Main PCB ASSY (Maintenance Mode: Code 01)...... 4-3
1.3 Setting by Country (Maintenance Mode: Code 74) ............................................... 4-3
1.4 Setting the Serial Number ..................................................................................... 4-3
1.5 Inputting the Adjusted Value of the Laser Unit ...................................................... 4-4
1.6 Acquisition of White Level Data (Maintenance Mode: Code 55) ........................... 4-5
1.7 Operation Check of Sensors (Maintenance Mode: Code 32)................................ 4-5
2. IF YOU REPLACE THE LASER UNIT.......................................................................... 4-6
2.1 Inputting the Adjusted Value of the Laser Unit ...................................................... 4-6
3. IF THE IRREGULAR SUPPLY DETECTION ERROR IS DETECTED AND
THE LOW VOLTAGE POWER SUPPLY PCB ASSY IS REPLACED .......................... 4-7
3.1 Reset of Irregular Power Supply Detection Counter.............................................. 4-7
3.1.1 Reset of irregular power supply detection counter using the PJL file......... 4-7
3.1.2 Reset of irregular power supply detection counter
using the maintenance utility ...................................................................... 4-7
4. IF YOU REPLACE THE DOCUMENT SCANNER UNIT .............................................. 4-9
4.1 Acquisition of White Level Data (Maintenance Mode: Code 55) ........................... 4-9
4.2 Scanning and Printing Check ................................................................................ 4-9
4.3 Placement of Scanner Unit in Position for Transportation
(Maintenance Mode: Code 06) .............................................................................. 4-9
5. IF YOU REPLACE THE PANEL UNIT .......................................................................... 4-9
5.1 Operation Check of LCD (Maintenance Mode: Code 12)...................................... 4-9
5.2 Operation Check of Control Panel Button (Maintenance Mode: Code 13)............ 4-9
6. IF YOU REPLACE THE LCD UNIT............................................................................. 4-10
6.1 Operation Check of LCD (Maintenance Mode: Code 12).................................... 4-10
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