Updating Of Property Data (Function Code 68) - Brother MFC-3340CN Service Manual

8.5.15 Updating of Property Data (Function code 68)

n 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.
n Operating Procedure
(1) Press the 6 and 8 keys in this order in the initial stage of the maintenance mode.
(2) Press the 2, 5, 8, and 0 keys in this order.
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.
To enter letters "A" through "F," press the 1 through 6 keys while holding down the # key,
respectively.
(4) Press the Menu/Set key.
The machine beeps, shows the "INPUT ACCEPTED" on the LCD, and writes the entered
property code into the EEPROM. Then it returns to the initial stage of the maintenance mode.
NOTE: If the entered data contains any checksum error, the machine beeps, shows the "INPUT
ERROR," and then returns to the ready-to-enter state. Go back to step (3).
Head property code
8-33
Confidential