Disassembly Flowchart; Sensors, Encoders, And Thermistors - Brother MFC5490CN Service Manual

Disassembly Flowchart

6.1.2
Scanner cover
ADF & document
(Scanner unit)
cover ASSY
(including ADF)
80/80
6.1.2
Scanner cover
support/damper
30/30
6.1.5, 6.1.6
Control panel ASSY
25/25
(Note 2)
6.1.7
Speaker
10/20
6.1.11
CR encoder strip
5/5
6.1.11
Head cover
30/10
6.1.11
Carriage PCB ASSY
20/20
(Note 4)
6.1.11
Print head
15/20

Sensors, encoders, and thermistors

(Note 1) The ADF unit has the document sensor PCB.
(Note 2) The control panel PCB has the scanner cover sensor and ink cartridge cover sensor.
(Note 3) The engine unit has the registration sensor PCB and PF encoder PCB (having PF encoder sensor).
(Note 4) The carriage PCB in the head/carriage unit has the paper width sensor, head thermistor, and CR encoder sensor.
(Note 5) The ink refill ASSY has the ink cartridge detection sensor PCB (having four ink cartridge detection sensors) and ink
empty sensor PCB (having four ink empty sensors and the casing internal temperature thermistor).
(Note 6) The maintenance unit has the purge cam switch and cap lift cam switch. The ASF motor unit has the ASF encoder
sensor.
6.1.3
Disassembly of
ADF & document
cover ASSY
- / -
35/55
6.1.7
Side cover L/R
Upper cover
10/10 35/35
6.1.9
Main PCB shield
15/15
6.1.9
Main PCB
45/45
6.1.9
Main PCB
shield frame
15/15
6.1.12
PF encoder disk
Ink absorber box
5/10
5/10
6.1.12
Ink absorber felt
5/5
6.1.11
Maintenance unit
Ink refill ASSY
20/50
30/50
(Note 5)
6.1.4
Paper tray ASSY
35/40
(Note 1)
6.1.7
6.1.8
Ink cartridge cover
10/10
6.1.8
Media module cover
5/5
6.1.1
Jam clear cover
15/10
6.1.13
6.1.12
Engine unit
30/40
(Note 3)
6.1.14 6.1.13
Flushing box
5/5
(Note 6)
6-5
Disassembly/reassembly
6.1.15
standard time (seconds)
6.1.8
Front cover
10/10
6.1.10
MJ PCB
35/35
6.1.10
Power supply PCB
50/50
(BHL9_A4_Flow)
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