Brother DCP-8070D Service Manual page 517

CHAPTER 7 SERVICE FUNCTIONS
The maintenance mode is exclusively designed for the purpose of checks, settings and
adjustments using the buttons on the control panel or open/close of the front cover. You can
perform operational checks of panel PCB, sensors, perform a print test, display the log
information or error codes.
1. ENTRY INTO THE MAINTENANCE MODE.................................................................. 7-1
2. LIST OF MAINTENANCE-MODE FUNCTIONS ........................................................... 7-2
3. USER-ACCESS TO THE MAINTENANCE MODE ....................................................... 7-3
4. DETAILED DESCRIPTION OF MAINTENANCE-MODE FUNCTIONS ........................ 7-4
4.1 EEPROM Parameter Initialization (Function code 01/91) ..................................... 7-4
4.2 Printout of Scanning Compensation Data (Function code 05) .............................. 7-5
4.3 Placement of Document Scanner Unit in Position for Transportation
(Function code 06)............................................................................................... 7-11
4.4 ADF Performance Test (Function code 08) ......................................................... 7-12
4.5 Test Pattern 1 (Function code 09) ....................................................................... 7-13
4.6 Firmware Switch Setting and Printout ................................................................. 7-14
4.6.1 Firmware switch setting (Function code 10)............................................. 7-14
4.6.2 Printout of firmware switch data (Function code 11) ................................ 7-18
4.7 Operation Check of LCD (Function code 12) ...................................................... 7-19
4.8 Operational Check of Control Panel Button (Function code 13).......................... 7-20
4.9 ROM Version Check (Function code 25) ............................................................. 7-22
4.10 Sensor Operational Check (Function code 32) ................................................... 7-23
4.11 PC Print Function (Function code 43) ................................................................. 7-25
4.12 Switching the USB Setting (Function code 45).................................................... 7-28
4.13 EEPROM Customizing (User-accessible) (Function code 52) ............................ 7-29
4.14 Received Data Transfer Function (Function code 53) (only model with FAX) ..... 7-30
4.15 Fine Adjustment of Scan Start/End Positions (Function code 54) ....................... 7-32
4.16 Acquisition of White Level Data
and CCD Scanner Area Setting (Function code 55)............................................ 7-34
4.17 Paper Feeding and Ejecting Test (Function code 67).......................................... 7-36
4.18 EEPROM Customizing (Function code 74) ......................................................... 7-36
4.19 Printout of maintenance information (Function code 77)..................................... 7-39
4.20 Operational Check of Fans (Function code 78)................................................... 7-40
4.21 Display of the Machine's Log Information (Function code 80)............................. 7-41
4.22 Error Code Indication (Function code 82)............................................................ 7-43
4.23 Output of Transmission Log to the Telephone Line (Function code 87) .............. 7-43
4.24 Counter Reset After Replacing the Fuser Unit,
Laser Unit and Paper Feed Kit (Function code 88) ............................................. 7-44
4.25 Maintenance Mode Finish (Function code 99) .................................................... 7-44
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