Brother FAX100 Service Manual page 64

(2) Take off the AC cord bushing from the main frame.
(3) Take out the main PCB, NCU PCB and power supply PCB.
AC cord
bushing
(4) Disconnect the main PCB and power supply PCB from the NCU PCB.
NCU PCB
SW3 (Cutter sensor)
SW4 (Hook switch sensor)
SW2 (Cover sensor)
SW1 (PE sensor)
Main PCB
PH2 (Document rear sensor)
PH1 (Document front sensor)
V – 12
Grounding
plate
Power supply PCB