Toshiba GD-1210 Service Manual page 72

EU/AU/AS/C models
NCU board
Lb
Line
La
RLY3
a2
CML relay
External
telephone
b2
GD-1210/1250/1270/1160/1260
ELECTRICAL CIRCUITS
Line current
detection
circuit
Dial pulse
1
generation
0
circuit
1
0
RLY4
Relay
~
DB1
- +
DC
consumption
~
circuit
Ring signal
detection
circuit
IC5 IC6
T1
Analog
switch
IC6 IC3
AG
Analog
switch
Fig. 4-4
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4 - 4
REVA
REVB
CML
LD
TXOUT
ATT3DB
IC4
RXIN
IC4
CNG signal
ANSDET
detection
circuit
RLADJ1
RLADJ2
CI
FAX board