Brother MFC640CW Service Manual page 150

Reassembling Note: If you replace the flushing case, you need to reset the flushing counter in
the EEPROM to zero according to the procedure below.
MFC640CW/820CW
1) Press the Menu/Set (Menu) and Black Start keys. Next press the
the machine enter the maintenance mode.
The "
TIP: FAX models equipped with numerical keypads can enter the maintenance mode in the
same way as conventional models; that is, by pressing the Menu/Set (Menu), *, 2, 8, 6 and 4
keys in this sequence.
2) Press the 8 and 0 keys in this order to display the equipment's log. (Function code 80
described in Chapter 8, Section
3) Press the Black Start key several times until the flushing count appears on the LCD.
4) Press the 2, 7, 8 and 3 keys to reset the flushing count to zero.
5) Press the 9 key twice to return to the standby state.
DCP340CW
1) Press the Menu and Mono Start keys. Next press the
enter the maintenance mode.
The "
2) Display the equipment's log (with Function code 80) by using the
Press the key several times to display 8 on the LCD and press the Set key. Again press the
key several times to display 0 and press the Set key.
3) Press the Mono Start key several times to display the flushing count on the LCD.
4) Reset the flushing count to zero by using the
Press the key several times to display 2 on the LCD and then press the Set key. In the same
way, enter 7, 8, and 3.
5) Exit from the maintenance mode by using the
Press the key several times to display 9 on the LCD and then press the Set key. Again
press the key several times to display 9 and press the Set key.
TIP: This machine counts all flushing operations performed since produced in order to prevent
the flushing case from overflowing with flushed ink. When the counter approaches 6400,
"MACHINE ERROR 46" appears, and further flushing operations are prohibited. Replace the
flushing case and reset the flushing counter.
" appears on the LCD.
8.4.21.)
" appears on the LCD.
and Set keys as follows:
and Set keys as follows:
5 - 6 4
key four times to make
key four times to make the machine
and Set keys as follows:
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