5-4 Confidential
! Disassembly Flowchart
Jam clear cover
Scanner cover
(Scanner unit)
Control panel ASSY
Upper cover
Head/carriage unit
Carriage PCB
Ink refill ASSY
Main PCB
Media module
cover
MJ/PS shield box
MJ PCB
Power supply PCB
Engine unit
Ink absorber box
Harness cover
CIS flat cable cover
(NOTE 1)
(NOTE 2)
ADF & document
cover ASSY
Hook switch actuator
Hook switch PCB
*2
Backup battery
*3
*3
CR encoder strip
CR timing belt
Maintenance unit
Paper pull-in gear shaft
and roller holder
PF sensor PCB
Paper pressure holder
Paper feed motor
Star wheel holder ASSY
Platen
Flushing case
Registration sensor actuator
PF encoder disk
Ejection idle gear
(NOTE 3)
(NOTE 4)
Paper ejection roller
Carriage motor
5.1.16
5.1.9
5.1.16
5.1.16
5.1.16
5.1.16
5.1.16
5.1.16
5.1.16
5.1.16
5.1.16
5.1.16
5.1.16
5.1.16
5.1.15
5.1.15
*1
5.1.2
5.1.3
5.1.3
5.1.3
5.1.5
5.1.7
5.1.11
5.1.14
5.1.12
5.1.12
5.1.13
5.1.13
5.1.13
5.1.9
5.1.4
5.1.8
5.1.10
5.1.9
Color LCD
5.1.6
WLAN PCB
5.1.12
Sensors, encoders, and thermistors
(NOTE 1) On the control panel PCB is a scanner open sensor.
(NOTE 2) On the carriage PCB are a paper width sensor, CR encoder sensor and head thermistor.
(NOTE 3) On the maintenance unit is a purge cam switch.
(NOTE 4) On the PF sensor PCB are a registration sensor and PF encoder sensor.
*1 MFC820CW
*2 MFC640CW
*3 MFC820CW/640CW
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