If You Replace The Main Pcb; 1 ] Load Update Programs/Data; 2 ] Initialize The Eeprom On The Main Pcb (Function Code 01) - Brother MFC640CW Service Manual

6.3 IF YOU REPLACE THE MAIN PCB

NOTE: If you replace the main PCB, also replace the ink absorber box. Using the machine without replacing
the ink absorber box for a long period may cause an overflow of drained ink from the ink absorber box,
thereby staining the machine.

[ 1 ] Load update programs/data

If the main PCB is replaced with a new one, load the update programs/data onto the flash ROM.
Refer to Appendix 2, page App. 2-5.
If the main PCB is replaced with the one used for other machines, follow the steps below.
(1) Update the firmware stored in the flash ROM. Refer to
(2) Reset the purge counter to zero with the following procedure.
MFC820CW/640CW
1) Press the 8 and 0 keys in this order in the initial stage of the maintenance mode.
NOTE: Make a note of the log information displayed on the LCD on the machine's repair
log sheet as well as leaving a comment that the log information stored in the EEPROM is
different from the actual record.
2) Press the Black Start key several times until the purge count appears on the LCD.
3) Press the 2, 7, 8, and 3 keys in this order to reset the purge count to zero.
4) Press the Stop/Exit key to return to the initial stage of the maintenance mode.
5) Press the 9 key twice to exit from the maintenance mode.
DCP340CW
1) Enter 8 and 0 by using the
NOTE: Make a note of the log information displayed on the LCD on the machine's repair
log sheet as well as leaving a comment that the log information stored in the EEPROM is
different from the actual record.
(*To enter a numerical code on models having no numerical keypad, press the
display the numerical code to be entered and then press the Set key. Repeat this operation for each
numerical code.)
2) Press the Mono Start key several times until the purge count appears on the LCD.
3) Enter 2, 7, 8, and 3 by using the
This resets the purge counter to zero.
4) Press the Stop/Exit key to return to the initial stage of the maintenance mode.
5) Enter 9 twice by using the
[ 2 ] Initialize the EEPROM on the main PCB (Function code 01)
Refer to Chapter 8, Section 8.4.1.
and Set keys.*
and Set keys.*
and Set keys to exit the maintenance mode.*
6 - 2 1
Appendix 2, page App. 2-7.
key several times to
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