Pub. 42004-658L2H
701-902 SmartSeries
®
Handset/Speaker Amplifier
Page 3 of 15
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Figure 2. Side View
Block Diagram
Connector
P1
on the back of the speaker amplifier/power supply PCBA plugs into a socket in an
enclosure connected to the system cable, accessing the Page/Party lines and ac power. The speaker
amplifier/power supply PCBA contains the low voltage power supplies and the speaker amplifier
circuitry.
Connector
J1A
and
J1B
on the speaker amplifier/power supply PCBA connects reg5 V dc, +/−15
V dc, and V
RLY
voltages along with control, monitoring, and line signals to the
J1A
and
J1B
on the
handset amplifier/FSK/
μ
P PCBA. Connector
J2
on the speaker amplifier/power supply PCBA connects
to optional external devices.
The handset and hookswitch leads connect to the handset amplifier/FSK/
μ
P PCBA via spade terminal
connectors
E1
to
E7
.
Figure 3. Block Diagram
