Brother DCP-6690CW, Service Manual, Page: 326 / 506

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7.3 IF YOU REPLACE THE MAIN PCB
Note: If you replace the main PCB, it is necessary to make a backup of the machine information and
user data into an external memory before starting disassembly of the machine. After the completion
of reassembling jobs, restore the backup data to the new main PCB. For detailed procedure of the
backup and restoration, refer to
Chapter 9, Section 9.4.10 "Backup of Machine Information (Function
code 46) (User-accessible)."
[ 1 ] Load update programs/data
„
If the main PCB is replaced with a new one:
Load the desired programs onto the flash ROM. Refer to
Appendix 2, page App. 2-5 .
„
If the main PCB is replaced with the one used for any other machine:
Change the firmware stored in the flash ROM. Refer to
Appendix 2, page App. 2-7 .
[ 2 ] Initialize the EEPROM on the main PCB (Function code 01)
Refer to Chapter 9, Section 9.4.1 .
[ 3 ] Customize the EEPROM on the main PCB (Function code 74)
Refer to Chapter 9, Section 9.4.22 .
[ 4 ] Check the control panel PCB for normal operation (Function code 13)
Refer to Chapter 9, Section 9.4.7 .
[ 5 ] Check the sensor operation (Function code 32)
Refer to Chapter 9, Section 9.4.9 .
[ 6 ] Acquire white level data and set CIS scanner area (Function code 55)
Refer to Chapter 9, Section 9.4.14 .
[ 7 ] Set an ID code and update the head property information
Note: Make sure that the Brother Maintenance USB Printer driver has been installed to your
PC. To do it, click Start|Settings|Printers to call up the Printers window and confirm that the
Brother Maintenance USB Printer icon (shown on the sample window on page 7-9 ) is
displayed. If the driver has not been installed, install it referring to Section 7.1.2.
(1) Make sure that your PC is turned off, then connect the machine to your PC using a USB
cable.
(2) Switch your PC on.