Brother International IntelliFax-3550 Service Manual - Page 69

Solenoid harness 2-pin, P8, Main-panel harness 5-pin, P5

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1.15 Main PCB (1) Remove the three screws from the interface plate. (2) Pull out the interface plate to the rear of the machine and take out the main PCB from the shield bracket. (3) Slightly lift up the main PCB and disconnect the following ten harnesses: • Main motor harness (4-pin), P9 • Scanner motor harness (6-pin), P10 • Main-low-voltage harness (5-pin), P7 • Main-panel harness (5-pin), P5 • Solenoid harness (2-pin), P8 • Fan 2 harness (2-pin), P18 • Speaker harness (2-pin), P16 • Hook switch harness (2-pin), P11 • Main-NCU harness (12-pin), P6 Main-NCU harness (6-pin), P6 (on the European and Asian versions only) • Main-sensor harness (11-pin), P4 Main PCB Interface plate Relay PCB Main cover (placed upside down) Centronics parallel interface connector (Rear) Main motor harness Scanner motor harness Solenoid harness Speaker harness Hook switch harness Interface plate P9 P7 P10 P5 P8 P18 P4 P16 P11 P6 P13 Relay PCB Shield bracket Main-low-voltage harness Main-panel harness Fan 2 harness Main-sensor harness Main-NCU harness IV - 19

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IV –
19
1.15
Main PCB
(1)
Remove the three screws from the interface plate.
(2)
Pull out the interface plate to the rear of the machine and take out the main PCB from
the shield bracket.
(3)
Slightly lift up the main PCB and disconnect the following ten harnesses:
•
Main motor harness (4-pin), P9
•
Scanner motor harness (6-pin), P10
•
Main–low-voltage harness (5-pin), P7
•
Main-panel harness (5-pin), P5
•
Solenoid harness (2-pin), P8
•
Fan 2 harness (2-pin), P18
•
Speaker harness (2-pin), P16
•
Hook switch harness (2-pin), P11
•
Main-NCU harness (12-pin), P6
Main-NCU harness (6-pin), P6 (on the European and Asian versions only)
•
Main-sensor harness (11-pin), P4
P9
P10
P18
P7
P5
P8
P16
P6
P13
P11
P4
Main PCB
(Rear)
Main-sensor harness
Main-panel harness
Main–low-voltage harness
Main motor harness
Scanner motor harness
Solenoid harness
Speaker harness
Hook switch harness
Main-NCU harness
Interface plate
Relay PCB
Shield bracket
Main cover
(placed upside
down)
Interface plate
Centronics parallel
interface connector
Relay PCB
Fan 2 harness