Brother DCP-9055CDN Service Manual page 383

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
7.2 Scanning and Printing Check ................................................................................... 4-13
7.3 Placement of Scanner Unit in Position for Transportation
(Maintenance Mode: Code 06) ................................................................................. 4-13
8. IF YOU REPLACE THE PANEL UNIT OR LCD UNIT .............................4-13
8.1 Adjustment of Touch Panel (Maintenance Mode: Code 61) (Touch Panel Model) ... 4-13
8.2 Operation Check of LCD (Maintenance Mode: Code 12) ......................................... 4-13
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