GAI-Tronics 7245-004 SmartSeries Indoor Remote Subset Amplifier Enclosure - Manual (Page 9)

Pub. 42004-644L2D
7245-004 Indoor Remote Subset Amplifier Enclosure Page 9 of 12
f:\standard ioms - current release\42004 instr. manuals\42004-644l2d.doc
07/12
Maintenance
Regular inspection and a good preventive maintenance program will increase the reliability of your
GAI-Tronics station. The GAI-Tronics Field Service Department can formulate a service contract suited
to your facility’s specific need for preventive maintenance.
In addition, the following procedure can be used to keep your system operating effectively.
WARNING
Before performing any of the following preventive maintenance steps, remove
all power from the station.
1. Remove the amplifier from the enclosure.
2. Visually check the interior of the enclosure for signs of contamination such as dust, condensation or
process liquid.
3. Using the No. 10440-003 Maintenance Cable, plug the amplifier into the connector in the enclosure.
Check, and if necessary, adjust the amplifier to maximize performance.
4. Reinstall the amplifier in the enclosure. Ensure that all gaskets and hardware are in place. Failure to
install the gaskets, which also act as spacers, can result in damage to the connectors on the amplifiers
and inside the enclosures and can cause system faults.
It may become necessary to re-terminate some or all of the enclosures in a system. If so, strip the wires
back to clean copper and connect only one wire to each connector to allow for easier future
troubleshooting.
Troubleshooting
The following table lists some hints to aid technicians in troubleshooting.
Table 2.
Problem Solution
Feedback occurs only
during page. Use the muting feature in the amplifier enclosure at the terminal blocks.
Connect the violet wire at terminal 8 to terminal 7, or reposition the speaker.
In some cases, the speaker of a nearby station may have to be repositioned.
Crosstalk occurs. One or more system cable pairs may be improperly terminated or a fault
exists somewhere else in the system. Visually inspect the system cable
connections for accidental crossing of the cable pairs or grounds.
Remote subset is
inoperable.  Verify that the connector of the remote subset is securely connected to the
subset receptacle of the enclosure.
 Remove the amplifier from the enclosure. Re-install the amplifier
ensuring the enclosure connector and the amplifier connector are aligned
properly.
Auxiliary inputs do not
operate.  Remove the amplifier and verify the lugged auxiliary input wires are
properly terminated on terminal points TB1-10 and TB1-11 respectively.
 Verify the auxiliary inputs have been enabled in the system software.