Brother FAX-2840 Service Manual page 205

CHAPTER 4 ADJUSTMENTS AND UPDATING SETTINGS
AS 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.
1. IF YOU REPLACE THE MAIN PCB ASSY................................................................... 4-1
1.1 Rewriting the firmware (main firmware, demo 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 (Function Code: 01)....................... 4-3
1.3 Setting by Country (Function Code: 74) ................................................................ 4-3
1.4 Setting the Serial Number and Entering the Adjusted Value of the Laser Unit...... 4-4
1.5 Acquisition of White Level Data (Function Code: 55) ............................................ 4-5
1.6 Operational Check of Sensors (Function Code: 32).............................................. 4-5
2. IF YOU REPLACE THE LASER UNIT.......................................................................... 4-6
2.1 Entering the Adjusted Value of the Laser Unit....................................................... 4-6
3. IF YOU REPLACE THE LOW VOLTAGE POWER SUPPLY PCB ASSY .................... 4-8
3.1 Reset of Irregular Power Supply Detection Counter.............................................. 4-8
4. IF YOU REPLACE THE CIS UNIT ................................................................................ 4-9
4.1 Acquisition of White Level Data (Function Code: 55) ............................................ 4-9
4.2 Scanning and Printing Check ................................................................................ 4-9
4.3 Scanning Lock (Function Code: 06) ...................................................................... 4-9
5. IF YOU REPLACE THE PANEL UNIT ........................................................................ 4-10
5.1 Operational Check of LCD (Function Code: 12).................................................. 4-10
5.2 Operational Check of Control Panel Buttons (Function Code: 13) ...................... 4-10
6. IF YOU REPLACE THE LCD UNIT............................................................................. 4-11
6.1 Operational Check of LCD (Function Code: 12).................................................. 4-11
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