Control Electronics; Configuration; Main Pcb - Brother FAX255 Service Manual

3. CONTROL ELECTRONICS

3.1

Configuration

The hardware configuration of the facsimile equipment is shown below.
Handset
Speaker
*
2
Motor
Solenoid
Drive unit
Recording head
Line
External
telephone
J1
J2
2-pin 2-pin
J3 4-pin
NCU PCB
(Note)
2-pin
6-pin
FAX

Main PCB

2-pin
engine
12-pin
2-pin 2-pin
2-pin
Mic *
Battery *
Cutter HP
sensor
Power supply PCB
Configuration of Facsimile Equipment
III – 17
*
1
5-pin
PCI *
8-pin
6-pin
CIS unit
7-pin
*1 On the main PCB are these sensors:
• PE sensor (SW1)
• Cover sensor (SW2)
• Hook switch sensor (SW3)
• Document front sensor (PH1)
• Document rear sensor (PH2)
*2 On the drive unit is the cutter HP sensor.
* Provided on the FAX355MC/
FAX375MC/FAX-525DT/FAX-
525MC
(Note)
12-pin: U.S.A. versions
18-pin: European versions
Control
panel PCB
LCD
13-pin
FPC key