Main Pcb - Brother HLL3290CDW Service Manual

9.29 Main PCB

(1) Disconnect all the Harnesses and all the Flat cables that are connected to the Main PCB.
Main PCB
Eject sensor
harness
Harness routing: Refer to
Back cover sensor harness
Low-voltage power
supply harness
High-voltage power supply flat cable
"10. Main PCB, Cartridge sensor relay
Cartridge sensor relay flat cable
T1 paper empty/paper
feed sensor harness
Registration clutch harness
Paper feed motor
T1 pick-up clutch harness
flat cable
Develop release clutch harness
Fig. 3-87
3-99
External temperature/
humidity sensor harness
Manual feed paper
empty/regist rear/regist
front sensor harness
Develop release
clutch K harness
Process motor
flat cable
HVPS harness
Duplex clutch harness
PCB".
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