Brother FAX-545, Service Manual, Page: 4 / 198

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CHAPTER 8 MAINTENANCE MODE
Describes the maintenance mode which is exclusively designed for the purpose of checks, settings
and adjustments using the keys on the control panel.
In the maintenance mode, you can customize the memory (EEPROM: electrically erasable
programmable read-only memory) contents 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).
CHAPTER 9 ERROR INDICATION AND TROUBLESHOOTING
Details error messages and codes that the incorporated self-diagnostic functions display if any error
or malfunction occurs. If any error message appears, refer to this chapter to find which components
should be checked or replaced.
The latter half of this chapter provides sample problems that could occur in the main sections of the
machine and related troubleshooting procedures. This will help service personnel pinpoint and
repair defective components.
Appendix 1 Serial Numbering System
Shows the location of serial number labels put on some parts and lists the coding information
pertaining to the serial numbers.
Appendix 2 Firmware Installation
Not applicable.
Appendix 3 Customizing Codes According to Shipping Destination
Provides instructions on how to set up the customizing codes for the various preferences
exclusively designed for each destination (e.g. language). Those codes are stored in the memory
(EEPROM) mounted on the main PCB. If the main PCB is replaced, therefore, you will need to set
up the proper customizing code with the machine in the maintenance mode.
Customizing codes come 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 Diagram
Provides the wiring diagram that helps you understand the connections between PCBs.
Appendix 6 Circuit Diagrams
Provides the circuit diagrams of the NCU PCB and power supply PCB.
Appendix 7 Deletion of Personal Information
Provides instructions on how to delete personal information recorded in the machine.
This manual describes the models and their versions destined for major countries. The specifications and
functions are subject to change depending upon each destination.