Brother MFC-J3520 Service Manual page 144

[ 2 ] Backing up Machine Information and Head Calibration Data (when the main PCB
ASSY is to be replaced)
Before starting repair, the service personnel should back up the following machine
information, user setting information and head calibration data into an external memory
(memory card or USB flash memory).
-Machine information (Preset values, count values, error information, machine
specifications data, etc.)
-User setting information (telephone directory, password, station ID, transfer
information, telephone area code, user settings, etc.)
-Other data (Received fax data, ICM/OGM data, etc.)
Note that the following information cannot be backed up.
-MAC address
-Call and caller ID records
-Activity report
-Fax data to be sent (by delayed-timer, redialing, and polling)
Operating Procedure

Refer to Chapter 5, Section 1.3.13 "Backup of Machine Information (Maintenance
mode 46)" and
Backup/Restoration of Head Calibration Data (Maintenance mode 68)."
Chapter 5, Section 1.3.25 "Updating of Head Property Data and
3-24
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