As Required After Parts Replacement - Brother HL-5440D Service Manual

CHAPTER 4 ADJUSTING 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 Installing Firmware (Sub Firmware, Main Firmware) ............................................. 4-2
1.1.1 Checking firmware version ......................................................................... 4-2
1.1.2 Installing firmware ...................................................................................... 4-2
1.2 Setting Default Paper Size .................................................................................... 4-4
1.3 Setting Serial Number and Entering Adjusted Value of Laser Unit........................ 4-5
2. IF YOU REPLACE THE LASER UNIT.......................................................................... 4-7
2.1 Entering Adjusted Value of Laser Unit................................................................... 4-8
3. IF YOU REPLACE THE LOW-VOLTAGE POWER SUPPLY PCB ASSY .................. 4-10
3.1 Resetting Irregular Power Supply Detection Counter.......................................... 4-10
4. IF YOU REPLACE THE HIGH-VOLTAGE POWER SUPPLY PCB ASSY ................. 4-11
4.1 Initializing Pre-discharge Detection Parameters.................................................. 4-11
5. IF YOU REPLACE ANY PERIODIC REPLACEMENT PARTS .................................. 4-12
5.1 Resetting Counter of Periodic Replacement Parts .............................................. 4-12
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