Main Pcb - Brother MFC-J6510DW Service Manual

3.9.10 Main PCB

Caution: Before replacement of the main PCB, back up the machine information and user
setting information (refer to
(Function code 46) (User-accessible)"
Section 5.1.4.22 "Updating of Head Property Data and Backup/Restoration of Head
Calibration Data (Function code 68)."
information to the new PCB. Failure to do so requires replacing also the ink absorber box
and flushing box after replacement of the main PCB.
Caution: Before accessing the main PCB, make sure that the power cord is unplugged from the
electrical outlet and the telephone line is disconnected; otherwise, an electric shock could occur.
Vorsicht: Bevor Sie auf das Mainboard zugreifen, stellen Sie sicher, dass der Netzstecker aus
der Netzsteckdose gezogen und das Telefonkabel entfernt ist. Andernfalls kann es zu einem
Stromschlag kommen.
Caution: At the time of removal of the main PCB, untightening screws should be preceded by
disconnection of the harnesses and flat cables, and at the time of installation, connection of the
harnesses and flat cables, by tightening of screws. Observing this sequence prevents harnesses
and flat cables from getting crushed or damaged by screws or screwdrivers.
(1) Disconnect the following harnesses and flat cables from the main PCB.
Caution: Do not remove the screws from the main PCB before disconnecting harnesses
and flat cables.
Note: After disconnecting the flat cables, check that each cable is not damaged at its end or
short-circuited. When connecting the flat cables, do not insert them at an angle. After
insertion, check again that they are not at an angle.
- Ink cartridge detection sensor flat cable (8-wire)
- High-yield ink cartridge sensor flat cable (7-wire)
- Ink remaining sensor flat cable (9-wire)
- Purge cam switch harness (2-wire)
- Ink cartridge cover switch harness (2-wire)
- ASF* encoder harness (4-wire) (*Auto Sheet Feeder)
- PF encoder/PF sensor harness (7-wire)
- Switchback paper sensor harness (3-wire)
- Registration sensor harness (3-wire)
- Paper feed motor harness (2-wire)
- Power supply harness (6-wire)
- Carriage motor harness (2-wire)
- ASF* motor harness (2-wire)
- Head flat cable 3 (10-wire)
- Head flat cable 2 (12-wire)
- Head flat cable 1 (11-wire)
Chapter 5, Section 5.1.4.11 "Backup of Machine Information
and the head calibration data (refer to
After replacement, restore the backed up
3-93
Chapter 5,
Confidential