Troubleshooting - Valcom PagePac Plus V-5323100 Manual

The Ground Start mode is a two wire interface and has a 600 Ohm input impedance. When a trunk is
accessed, a momentary ground is sent to the ring-side of the pair by the host equipment, loop current is
detected and the tip-side of the pair is closed. Disconnect supervision of the ground start mode is
accomplished by monitoring the loop current.
Note: Ground start interface requires common ground between paging input and telephone system by
direct line or other common grounding methods.
The Loop Start mode is two wire interface and has a 600 Ohm input impedance. The host equipment
draws loop current from the talk-battery which is supplied by the AmpliCenter. Disconnect supervision of
the loop start mode is accomplished by monitoring the loop current.

TROUBLESHOOTING

Power LED not on.
Page access extension does not answer.
Background music cannot be heard.
A higher priority input is active.
Distorted, garbled, or raspy sound from
all speakers.
Page access LED won't go off.
Talkback feature does not work.
Noisy Talkback.
Remote amplifier not receiving audio.
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Table 10. Troubleshooting
Problem
Verify power cord is connected at both ends.
Check for AC voltage at the wall socket.
8-pin Molex plug from AmpliCenter in wrong connector on Controller.
AmpliCenter or Power Pack failed. Return for repair.
No power to AmpliCenter.
Host telephone system not passing call through to Controller.
Telephone mode selection switch on Controller not set correctly.
Ground start – Tip and Ring reversed or Controller not grounded to host system.
Input level not set correctly. Adjust music input level on AmpliCenter.
No power to music source. Verify power is on.
Radio off station. Adjust tuner.
Most likely music input wires crossed, with signal grounded out.
Music not programmed ON.
Short circuited speaker leads. Separate.
Music input level too high. Turn down.
Speaker transformer shorted. Replace.
Failed AmpliCenter. Return for repair.
Page VOX not set to full counterclockwise position.
C1 lead inadvertently grounded. If loop start or ground start, check that only 2 wires (Tip and Ring)
are connected by the modular plug cord.
Incorrect modular to modular cord connected between the Controller and the modular jack of the
D-series AmpliCenter.
Check the zone option switch, make sure that the switch is in the 70 volt position.
Check programming options for proper settings.
Check the telephone mode switch on the AmpliCenter is set to Dry Loop, 600 Ohm mode.
Check the wire to see if shielded cable was used. Change to shielded if necessary.
Make sure shield for cable is only tied to the Controller or Zone Expansion Unit end.
Remove shield at speaker end.
Check audio connections on 0dBm or 0dBu.
Check the zone option switch is in the Contact Closure Output position
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Corrective Action
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