Brother MFC4820C Service Manual page 128

Reassembling Notes
• When placing the air pump & motor module onto the ink cartridge support base, make sure that
the air tube (blue) is not bent.
• When setting the cover spring into place, take care not to pull it out of shape by extending it too
much.
• Like the print head unit, each air pump & motor module is assigned a property code that
represents the properties unique to that module. A property label, on which a property code is
printed, is attached to the module itself and to the rear left side of the machine (with the battery
cover* or rear cover S** removed). (*For the MFC4820C, **For the MFC4420C. Refer to
Section 6.1.4.)
If you remove the air pump & motor module and store it separately from the machine, remove
the property label from the machine and store it together with the module.
If you replace the module with a new one, attach the property label that comes with the new
module to the rear left side of the machine.
If the module is replaced with a new one, you will need to update the property data stored in the
EEPROM on the driver PCB. Make the machine enter the maintenance mode (Function code 68
+ 0789) and enter the 19 digits of the property code of the newly installed module. (For details,
refer to Chapter 7, Section 7.5.15.)
For ejection roller
For paper feed roller
• When you replace the ink absober box with out replaceing the driver PCB, reset the purge count
according to the following procedure.
1) Press the [Menu], [2],[8],[6]and [4] keys in this order to make the machine enter the
maintenance mode.
2) Press the [8] and [0] keys in this order. to show the equipment's log information on LCD.
3) Press the [Fax Start] button nine times. to show the purge count on LCD.
4) Press the [2],[7],[8] and [3] keys. to reset the purge count.
5) Press the [9] key twice in the initial stage of the maintenance mode to restore the machine to the
standby state.
Lower cover
(Rear)
For print head unit
Property label for
air pump & motor module
6-43
Property code
(19-digit)