GAI-Tronics 611C Introduzione - Pagina 3

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GAI-Tronics 611C Introduzione
Models 611C, 6115, 711-002, and 7115-002 Desk-edge Subsets
Adjustments
The following adjustments are accessible through the rear chassis of the remote amplifier using a
small flat blade screwdriver:
Microphone Gain: adjusts the gain level from the microphone signal to the page or party lines.
Receiver Sidetone: the amount of signal transmitted from the microphone to the handset receiver.
Receiver Volume: adjusts the gain level from a party line to the receiver.

Maintenance

The following table lists some of the difficulties encountered in Page/Party™ systems. Included are
some troubleshooting hints to aid in remedying these problems.

TROUBLESHOOTING

Problem
Outgoing conversation level
requires adjustment.
Incoming conversation level
requires adjustment.
Feedback/distortion (a hum or
buzz on the line) occurs during
all Page/Party™ station
operation.
Feedback occurs during paging.
Sidetone (how the operator hears
himself) requires adjustment.
Crosstalk occurs.
Miscellaneous
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1. Adjust the microphone gain at the remote amplifier.
2. Replace handset microphone.
1. Adjust the receiver volume control at the remote amplifier.
2. Replace the receiver element in the handset.
1. Adjust the receiver sidetone at the remote amplifier.
2. The line may be improperly terminated. Inspect the system
cable for loose connections, shorts, and grounds. Line
balance assembly connections are critical.
Use the muting feature in the amplifier enclosure at the terminal
blocks as detailed in the enclosure manual.
1. Adjust the receiver sidetone at the remote amplifier.
2. Check the wire terminations for proper connections in the
line balance assembly.
One or more system cable pairs may be improperly terminated.
Visually inspect the system cable connections for accidental
crossing of the cable pairs or grounds.
A defective handset/speaker amplifier printed circuit board
assembly (PCBA) can cause numerous problems. If the
Page/Party™ station is not functioning properly, it may be
worthwhile to replace the handset/speaker amplifier PCBA.
Page:
Pub. 42004-152B
Solution
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