Troubleshooting - Lectrosonics AM8 Instruction Manual

AM8

Troubleshooting

Symptom
No sound from system
Difficulty activating certain mics
All front panel channel LEDs are on all the time, with or without signal applied.
You can't control the channel and main gains from the rear panel Remote Level Control connector.
10
Possible Cause
1) Main level control not turned up
2) Channel level not turned up
3) Input gain setting too low
4) Phantom power not on for electret microphone
5) Remote level control turned down
1) Mic level is too low relative to other mics - Turn up the mic level
1) If you are using just one AM8/AM8-TC, be sure the rear panel
Master/Slave switch is in the Master mode.
2) Be sure that the Direct/Auto dip switch associated with each
channel is in the Auto position. If changing these switches does
not fix the problem, the AM8/AM8-TC might be in the Remote
mode. It can be reset to the Local mode by turning the power off,
shorting pins 10 and 15 together (located on the rear panel
Remote Level Control connector), and turning the power back on
while the pins are shorted.
3) If you are using more than one AM8/AM8-TC in your system, set
the AM8/AM8-TC whose Expansion In (but not Expansion Out) port
is used to Master mode, and all other AM8/AM8-TCs to Slave
mode.
1) The AM8/AM8-TC might be in the Remote mode, in which case it
will not respond to control voltages applied to the Remote Level
Control pins. The AM8/AM8-TC can be reset to the Local mode by
turning the power off, shorting pins 10 and 15 together (located on
the rear panel Remote Level Control connector), and turning the
power back on while the pins are shorted.
LECTROSONICS, INC.