GAI-Tronics 701-905 SmartSeries Handset/Speaker Amplifier - Manual (Page 11)

Pub. 42004-685L2D
701-905 S MART S ERIES
®
H ANDSET /S PEAKER A MPLIFIER P AGE 10 of 15
f:\standard ioms - current release\42004 instr. manuals\42004-685l2d.doc
03/12
Internal Adjustments
Although they typically require no adjustments, the following volume levels can be set internally:
Sidetone Volume and Handset Receiver Volume
To make an adjustment it is necessary to remove the assembly from its enclosure and make a temporary
connection between the assembly and the enclosure. Refer to Figure 2 for the reference numbers and
locations of the adjustment controls. Turn a control clockwise to increase the volume or threshold; turn it
counterclockwise to decrease the volume or threshold. Use a small flat-blade screwdriver with an
insulated shaft to make adjustments.
To access the controls, perform the following steps:
1. Loosen the four screws that secure the front panel.
2. Remove the assembly from the enclosure. If the enclosure is equipped with an optional EOL Module
or SmartSeries ® station RTU, be careful to not disconnect the ribbon cable on J2 of the Speaker
Amp/Power Supply PCBA.
3. Connect the assembly to the enclosure using a Model 10440-002 Maintenance Cable between P1 on
the assembly and J1 on the enclosure.
4. Locate and adjust the control on the appropriate PCBA.
5. When you are finished with the adjustment:
a) Disconnect the Model 10440-002 Maintenance Cable.
b) Insert the assembly into the enclosure.
c) Tighten the four screws.
Handset Receiver Volume
Use the control labeled RCVR VOL (Ref. 7, on the Handset/FSK/ P PCBA) to adjust to the desired level
the handset receiver volume for voice signals from a party line.
Sidetone Volume
The control labeled SIDETONE (Ref. 4, on the Handset/FSK/ P PCBA) adjusts the handset/headset
sidetone.