Brother MFC5890CN Service Manual page 291

This chapter describes the maintenance mode which is exclusively designed for the purpose of checks,
settings and adjustments of the machine using the keys on the control panel.
In the maintenance mode, you can update memory (EEPROM: electrically erasable programmable
read-only memory) contents for optimizing the drive conditions of the head/carriage unit or the paper
feed roller and paper ejection roller in the engine unit, if those units have been replaced, or for setting
the CIS scanner area, for example. You can also customize the EEPROM according to the shipment
destination of the machine concerned. In addition, you can perform operational checks of the LCD,
control panel PCB or sensors, perform a print test, display the log information or error codes, and
modify firmware switches (WSW).
9.1 ENTRY INTO THE MAINTENANCE MODE........................................................... 9-1
9.2 LIST OF MAINTENANCE-MODE FUNCTIONS ..................................................... 9-2
9.3 USER-ACCESS TO THE MAINTENANCE MODE................................................. 9-3
9.4 DETAILED DESCRIPTION OF MAINTENANCE-MODE FUNCTIONS.................. 9-4
9.4.1 EEPROM Parameter Initialization (Function code 01, 91) ........................ 9-4
9.4.2 Printout of Scanning Compensation Data (Function code 05) .................. 9-5
9.4.3 ADF Performance Test (Function code 08) ............................................... 9-7
9.4.4 Test Pattern (Function code 09) ................................................................ 9-8
9.4.5 Firmware Switch Setting and Printout (Function codes 10 and 11)
(User-accessible) ..................................................................................... 9-10
9.4.6 Operational Check of LCD and Specifying of the LCD Type
(Function code 12) (User-accessible) ....................................................... 9-15
9.4.7 Operational Check of Control Panel PCB (Function code 13) .................. 9-17
9.4.8 Updating of Firmware Using an External Memory (Function code 28)...... 9-18
9.4.9 Sensor Operational Check (Function code 32) ......................................... 9-19
9.4.10 Printout of Dial Log (Function code 37) (User-accessible)........................ 9-20
9.4.11 Backup of Machine Information (Function code 46) (User-accessible)..... 9-21
9.4.12 Setting of Country/Language (Function code 52) (User-accessible)......... 9-23
9.4.13 Transfer of Received FAX Data and/or Equipment's Log
(Function code 53) (User-accessible) ....................................................... 9-24
9.4.14 Fine Adjustment of Scanning Start/End Position (Function code 54)........ 9-26
9.4.15 Acquisition of White Level Data and CIS Scanner Area Setting
(Function code 55) .................................................................................... 9-27
9.4.16 Updating of Paper Feeding Correction Value (Function code 58)............. 9-28
9.4.17 Checking of CIS Travel and Specifying of CIS Type (Function code 59) .. 9-32
9.4.18 Travel Check of the Head/Carriage Unit and Initial Setup Mode
(Function code 63) .................................................................................... 9-34
CHAPTER 9 MAINTENANCE MODE
CONTENTS
Confidential