Brother DCP-L8400CDN Service Manual page 10

7. IF YOU REPLACE THE LASER UNIT .....................................................4-12
7.1 Continuous Adjustments of Density and Registration Sensor
(Function code 73).................................................................................................... 4-12
7.2 Counter Reset of Laser Unit (Reset Counters for Parts (Function code 88)) ........... 4-12
8. IF YOU REPLACE THE FIRST SIDE CIS UNIT,
DOCUMENT SCANNER UNIT .................................................................4-13
8.1 Acquisition of White Level Data (Function code 55) ................................................. 4-13
8.2 Scanning and Printing Check ................................................................................... 4-13
9. IF YOU REPLACE THE ADF UNIT, SECOND SIDE CIS UNIT...............4-14
9.1 Acquisition of White Level Data (Function code 55)
(Duplex Scanning Model Only)................................................................................. 4-14
9.2 Scanning and Printing Check ................................................................................... 4-14
10. IF YOU REPLACE THE FUSER UNIT/PF KIT 1, 2, AND MP ...............4-15
10.1 Counter Reset of Fuser Unit or PF Kit 1, 2, and MP
(Reset Counters for Parts (Function code 88))....................................................... 4-15
CHAPTER 5 SERVICE FUNCTIONS
1. MAINTENANCE MODE..............................................................................5-1
1.1 How to Enter the Maintenance Mode ......................................................................... 5-1
1.1.1 How to Enter the Maintenance Mode Exclusive to Service Personnel .............. 5-1
1.1.2 How to Enter the End User-accessible Maintenance Mode .............................. 5-2
1.2 List of Maintenance-mode Functions.......................................................................... 5-3
1.3 Detailed Description of Maintenance-mode Functions ............................................... 5-5
1.3.1 EEPROM parameter initialization (Function code 01, 91) ................................. 5-5
1.3.2 Printout of scanning compensation data (Function code 05)............................. 5-6
1.3.3 ADF performance test (Function code 08) ........................................................ 5-8
1.3.4 Monochrome image quality test pattern (Function code 09).............................. 5-9
1.3.5 Worker switch (WSW) setting and printout (Function code 10, 11) ................. 5-10
1.3.6 Operational check of LCD (Function code 12) ................................................ 5-14
1.3.7 Operational check of control panel key (Function code 13)............................. 5-15
1.3.8 Software version check (Function code 25)..................................................... 5-16
1.3.9 "One Push Demo" setting (Function code 28) ................................................. 5-17
1.3.10 Operational check of sensors (Function code 32) ......................................... 5-18
1.3.11 LAN connection status display (Function code 33)........................................ 5-22
1.3.12 EEPROM Dump Print (Function code 40) ..................................................... 5-23
1.3.13 Backup of machine information (Function code 41) ...................................... 5-24
1.3.14 PC print function setting (Function code 43) ................................................. 5-26
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