Low-Voltage Power Supply Pcb Assy; High-Voltage Power Supply Pcb Assy - Brother HL-730Plus Service Manual

NOTE1: When reassembling, the connectors must be inserted fully into the PCB and the
PCB must not be lifted up by the harnesses.
NOTE2: The connectors should be inserted by matching the housing color and the number
of pins.
3.9

Low-Voltage Power Supply PCB Assy

(1) Remove the screw securing the low-voltage power supply PCB assy and lift the PCB.
(2) Disconnect the two connectors from the component side of the PCB.
Low-voltage power
supply PCB assy
LV harness (CN101)
3.10

High-voltage Power Supply PCB Assy

(1) Remove the screw securing the high-voltage power supply PCB assy and lift the PCB.
(2) Disconnect the four connectors from the PCB.
High-voltage power supply PCB assy
Drum ground PCB
harness (P4)
Fan motor harness (P2)
Erase lamp harness (P3)
HV Flat cable (P1)
NOTE: When reassembling, the density volume adjuster knob must be fitted into the cutout
side of the density dial.
Fig. 3.10
Insulation sheet
Density dial
Fig. 3.11
III-9
Heater harness
(CN1)
Density volume