Brother FAX255 Service Manual page 33

European versions
Surge
LINE
absorber
EXTERNAL
TELEPHONE
HANDSET
Modular jacks
Photocoupler
Dial pulse
generator
Loop current
detector
Telephone
circuit
Surge absorbers
Relays
III – 21
DC loop
Line relay
circuit
High-impedance
transformer
Transformers
Diode bridges
Photocouplers
Line
MAIN PCB
transformer
MAIN PCB
Calling signal
MAIN PCB
detector
MAIN PCB
Amplifier