Brother MFC 5490CN - Color Inkjet - All-in-One, Service Manual

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iii Confidential
CHAPTER 7 ADJUSTMENTS AND UPDATING of settings, REQUIRED
AFTER PARTS REPLACEMENT
Details adjustments and updating of settings, which are required if the head/carriage unit, main
PCB and some other parts have been replaced.
CHAPTER 8 CLEANING
Provides cleaning procedures not covered by the User's Guide. Before starting any repair work,
clean the machine as it may solve the problem concerned.
CHAPTER 9 MAINTENANCE MODE
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).
Appendix 1 Reading Labels
Shows the location of labels put on some parts and describes the coding information for serial
number, property data, and manufacturing information.
Appendix 2 Firmware Installation
Provides instructions on how to change firmware stored in the flash ROM on the main PCB or
load firmware to a new main PCB from the host PC.
Appendix 3 EEPROM Customizing Codes
Provides instructions on how to set up the EEPROM customizing codes for the various
preferences exclusively designed for each destination. The specified customizing code is stored
in the EEPROM mounted on the main PCB. If the main PCB is replaced, therefore, you need to
set up the proper customizing code with the machine in the maintenance mode.
Customizing codes customize firmware for individual models, enabling the common firmware
to be used for various models. A list of EEPROM customizing codes comes with the firmware
data provided by Brother Industries.
Appendix 4 Firmware Switches (WSW)
Describes the functions of the firmware switches, which can be divided into two groups: one is
for customizing preferences designed for the shipping destination (as described in
Appendix 3 )
and the other is for modifying preferences that match the machine to the environmental
conditions. Use the latter group if the machine malfunctions due to mismatching.
Appendix 5 Wiring Diagrams
Provides the wiring diagrams that help you understand the connections between PCBs.