Updating Of Property Data (Function Code 68) - Brother MFC640CW Service Manual

8.4.16 Updating of Property Data (Function code 68)

Function
To keep the print quality, the controller optimizes the drive conditions of individual head/carriage
units according to the property data. For instance, the controller optimizes the head drive strength,
ink jet-out timing and other drive conditions according to the electromechanical properties unique to
individual head/carriage units and ambient temperature.
The property data is stored in the EEPROM on the main PCB and its property code is printed on the
property label which is attached to the machine.
If you replace the head/carriage unit with a new spare part, you need to enter its property code
printed on the property label (that comes with the new spare part) and replace the old property label
on the bottom of the machine with the new one. If the old part may be used in future, store the old
property label also with the old part.
Operating Procedure
(1) MFC820CW/640CW
Press the 6 and 8 keys in this order in the initial stage of the maintenance mode.
DCP340CW
Enter 6 and 8 in the initial stage of the maintenance mode by using the
(*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) MFC820CW/640CW
Press the 2, 5, 8, and 0 keys in this order.
DCP340CW
Enter 2, 5, 8, and 0 by using the
The current property data stored in the EEPROM appears on the LCD and the machine is ready
for entry.
(3) Check the property label that comes with a new head/carriage unit and then enter the property
code.
The code to be entered is 12 digits excluding the heading alphabet.
MFC820CW/640CW
To enter letters "A" through "F," press the 1 through 6 keys while holding down the # key,
respectively.
DCP340CW
To enter letters "A" through "F," enter A through F by using the
and Set keys.*
Head property code
8 - 3 8
and Set keys.*
key several times to
and Set keys.*
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