Brother MFC 1870MC, Service Manual, Page: 31 / 217

III –
19
3. CONTROL ELECTRONICS
3.1 Configuration
The hardware configuration of the facsimile equipment is shown below.
Line
External
telephone
(Note)
P2
8-pin
PC I/F
Modular
PCB
Speaker
2-pin
6-pin
2-pin
11-pin
Motor
Solenoid
ASIC
NCU PCB
(Note)
12-pin: U.S.A. versions
18-pin: European versions
2-pin 2-pin
4-pin
5-pin
Control
panel PCB
COG
14-pin
7-pin
CIS unit
14-pin
FPC key
Micro-
phone
5-pin 2-pin 4-pin 2-pin
2-pin
Sensor
PCB
Hook
switch
PCB
4-pin
Ni-MH
battery
* 3 *
4
Recording head
*
5
Power supply PCB
Main PCB
* 1
*
2
Configuration of Facsimile Equipment
* 1
On the main PCB are these sensors:
• Document front sensor (PH1)
• Document rear sensor (PH2)
* 2
On the modular PCB is the cover sensor.
* 3
On the sensor PCB are these sensors:
• Paper ejection sensor (PH1)
• Paper-edge sensor (PH2)
* 4
On the hook switch PCB* is the hook switch sensor (SW1).
*
5
On the recording head is the ribbon sensor (SW1).
(Only on the FAX1570MC/1030/MFC1870MC/1970MC)
Handset*
*
* Not provided on
the FAX1010