Brother FAX-2840 Service Manual page 218

CHAPTER 5 SERVICE FUNCTIONS
Describes the maintenance mode which is exclusively designed for the purpose of checking
the settings and adjustments using the buttons on the control panel.
This chapter also covers not-disclosed-to-users function menus, which activate settings and
functions or reset the parts life.
1. MAINTENANCE MODE ................................................................................................ 5-1
1.1 How to Enter the Maintenance Mode .................................................................... 5-1
1.1.1 How to enter the end-user accessible maintenance mode ........................ 5-1
1.1.2 How to enter the maintenance mode for service personnel ....................... 5-1
1.2 List of Maintenance-mode Functions..................................................................... 5-2
1.3 Detailed Description of Maintenance-mode Functions .......................................... 5-3
1.3.1 EEPROM parameter initialization (Function code: 01, 91)......................... 5-3
1.3.2 Printout of scanning compensation data (Function code: 05) .................... 5-4
1.3.3 Scanning lock (Function code: 06) ............................................................. 5-6
1.3.4 ADF performance test (Function code: 08) ................................................ 5-6
1.3.5 Monochrome image quality test pattern (Function code: 09) ..................... 5-7
1.3.6 Worker switch (WSW) setting and printout (Function code: 10, 11) ........... 5-8
1.3.7 Operational check of LCD (Function code: 12) ........................................ 5-12
1.3.8 Operational check of control panel buttons (Function code: 13) .............. 5-13
1.3.9 Software version check (Function code: 25) ............................................ 5-15
1.3.10 Operational check of sensors (Function code: 32)................................... 5-16
1.3.11 LAN connection status display (Function code: 33) ................................. 5-18
1.3.12 PC print function (Function code: 43)....................................................... 5-19
1.3.13 Changing return value of USB No. (Function code: 45) ........................... 5-22
1.3.14 Received data transfer function (Function code: 53)................................ 5-23
1.3.15 Fine adjustment of scan start/end positions (Function code: 54) ............. 5-25
1.3.16 Acquisition of white level data/
compensation of scanning width (Function code: 55) .............................. 5-26
1.3.17 Automatic scanning position adjustment (Function code: 57) .................. 5-27
1.3.18 Continuous print test (Function code: 67) ................................................ 5-28
1.3.19 Setting by country (Function code: 74)..................................................... 5-29
1.3.20 Printout of maintenance information (Function code: 77)......................... 5-32
1.3.21 Operational check of fan (Function code: 78) .......................................... 5-34
1.3.22 Display of machine log history (Function code: 80).................................. 5-35
1.3.23 Error code indication (Function code: 82) ................................................ 5-38
1.3.24 Sending communication error list (Function code: 87) ............................. 5-38
1.3.25 Exit the maintenance mode (Function code: 99)...................................... 5-39
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