Brother MFC-J3520 Service Manual page 317

Head Calibration Data Backup/Restoration Procedures
Backup procedure
(1) Press the 6 and 8 keys in this order in the initial stage of the maintenance mode.
(2) Press the 0, 6, 2, and 6 keys in this order.
The "HeadCalib->Media" appears on the LCD.
(3) Insert an external memory into the memory slot.
(4) Press the SET or Mono Start key.
The machine displays "Now Saving" on the LCD and starts the backup operation.
Upon completion of the backup operation, the machine beeps displays "Head
Calib.data" on the LCD and returns to the initial stage of the maintenance mode.
Restoration procedure
(1) Press the 6 and 8 keys in this order in the initial stage of the maintenance mode.
(2) Press the 0, 6, 2, and 6 keys in this order.
The "HeadCalib->Media" appears on the LCD.
(3) Press the or
(4) Insert the external memory holding the head property data into the memory slot.
(5) Press the SET or Mono Start key.
The machine displays "Now Loading" on the LCD and starts the restoration
operation.
Upon completion of the restoration operation, the machine displays "Complete" on
the LCD and returns to the initial stage of the maintenance mode.
Note: - If the external memory inserted in step (5) holds no head calibration data, the
"Can't Open File" appears on the LCD.
- This procedure should be performed with the USB cable disconnected.
key to display "Media->HeadCalib" on the LCD.
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