Canon fax basic 2000 Service Manual
FACSIMILE SYSTEM
6–8
Fig. 6-7 Formation of DC Loop on Facsimile Side
B
T1
T2
L1
HS
L2
Off-hook
detection circuit
H relay
Exchange
ON
CML relay
DC seize
circuit
To 2-wire/4-wire
conversion circuit
conversion circuit
NCU board
ON