Brother DCP-9055CDN Service Manual page 8

1.1.3 Rewriting the firmware using USB flash memory .............................................. 4-3
1.2 Initialization of EEPROM of Main PCB ASSY (Maintenance Mode: Code 01) ........... 4-4
1.3 Setting by Country (Maintenance Mode: Code 74) .................................................... 4-4
1.4 Setting the Serial Number .......................................................................................... 4-4
1.5 Sensitivity Adjustment of Density Sensor (Maintenance Mode: Code 72).................. 4-5
1.6 Performing the Developing Bias Voltage Correction (Maintenance Mode: Code 83) . 4-5
1.7 Performing the Adjustment of Inter-color Position Alignment
(Maintenance Mode: Code 66) ................................................................................... 4-5
1.8 Acquisition of White Level Data (Maintenance Mode: Code 55) ................................ 4-5
1.9 Operational Check of Control Panel Button (Maintenance Mode: Code 13) .............. 4-5
1.10 Adjustment of Touch Panel (Maintenance Mode: Code 61) ..................................... 4-5
1.11 Operation Check of LCD (Maintenance Mode: Code 12) ......................................... 4-5
1.12 Operation Check of Sensors (Maintenance Mode: Code 32) ................................... 4-5
2. IF YOU REPLACE THE REGISTRATION MARK SENSOR
HOLDER ASSY ..........................................................................................4-6
2.1 Sensitivity Adjustment of Density Sensor (Maintenance Mode: Code 72).................. 4-6
2.2 Performing the Developing Bias Voltage Correction (Maintenance Mode: Code 83) . 4-6
2.3 Performing the Adjustment of Inter-color Position Alignment
(Maintenance Mode: Code 66) ................................................................................... 4-6
3. IF YOU REPLACE THE HIGH-VOLTAGE POWER SUPPLY PCB ASSY 4-7
3.1 Sensitivity Adjustment of Density Sensor (Maintenance Mode: Code 72).................. 4-7
3.2 Performing the Developing Bias Voltage Correction (Maintenance Mode: Code 83) . 4-7
3.3 Performing the Adjustment of Inter-color Position Alignment
(Maintenance Mode: Code 66) ................................................................................... 4-7
4. IF YOU REPLACE THE LASER UNIT .......................................................4-8
4.1 Sensitivity Adjustment of Density Sensor (Maintenance Mode: Code 72).................. 4-8
4.2 Performing the Developing Bias Voltage Correction (Maintenance Mode: Code 83) . 4-8
4.3 Performing the Adjustment of Inter-color Position Alignment
(Maintenance Mode: Code 66) ................................................................................... 4-8
5. IF THE MACHINE ERROR EF IS DETECTED AND THE LOW-VOLTAGE
POWER SUPPLY PCB ASSY IS REPLACED...........................................4-9
5.1 Reset of Irregular Power Supply Detection Counter................................................... 4-9
5.1.1 Reset of irregular power supply detection counter using the PJL file................ 4-9
5.1.2 Reset of irregular power supply detection counter using the
maintenance utility ............................................................................................. 4-9
6. IF YOU REPLACE THE DRUM DRIVE MOTOR .....................................4-11
7. IF YOU REPLACE THE DOCUMENT SCANNER UNIT..........................4-13
7.1 Acquisition of White Level Data (Maintenance Mode: Code 55) .............................. 4-13
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