Pub. 42004-643L2E
Model 716-102 and 7165-102 Flush-Mount Subsets
Page 9 of 10
f:\standard ioms - current release\42004 instr. manuals\42004-643l2e.doc
04/13
Troubleshooting
The following table lists some hints to aid technicians in troubleshooting:
Problem Possible
Solution
Outgoing conversation level
requires adjustment.
1.
Adjust the microphone gain at the remote amplifier.
2.
Replace handset microphone.
Incoming conversation level
requires adjustment.
1.
Adjust the receiver volume control at the remote amplifier.
2.
Replace the receiver element in the handset.
Sidetone (how the operator
hears himself) requires
adjustment.
1.
Adjust the receiver sidetone at the remote amplifier.
2.
Check the wire terminations for proper connections in the line
balance assembly.
Feedback/distortion (a hum or
buzz on the line) occurs
during all Page/Party
®
station
operation.
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.
Feedback occurs during
paging.
Use the muting feature in the amplifier enclosure at the terminal
blocks as detailed in the enclosure manual.
Crosstalk occurs.
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.
Miscellaneous
A defective handset/speaker amplifier printed circuit board assembly
(PCBA) can cause numerous problems. If the station is not
functioning properly, it may be worthwhile to replace the
handset/speaker amplifier PCBA.
