Low-Voltage Power Supply Pcb - Brother IntelliFax-3550 Service Manual

1.13 Low-voltage Power Supply PCB

The illustration below shows the location of the PCBs.
Main cover
upside down)
Main PCB
Relay PCB
High-voltage power
supply PCB
(1) Remove the screw from the low-voltage power supply PCB.
(2) Slightly lift up the low-voltage power supply PCB and pull out the power switch support.
(3) Disconnect the main–low-voltage harness and heater harness (of the blue and brown
wires) from the low-voltage power supply PCB.
Low-voltage power supply PCB
Main–low-voltage harness
Heater harness (blue
and brown wires)
Reassembling Notes
• When reassembling the above parts, make sure that the above harnesses are routed
through the clamps provided on the main cover as illustrated in Section 1.23.
NCU PCB
(placed
(beneath the main PCB)
(Front)
(Rear)
IV – 17
Low-voltage power
supply PCB
Gear drive unit
Fan 1
Power cord
Power switch support
Main cover (placed
upside down)