28
en | Troubleshooting
Airman 850
09-2021 | V07 | F.01U.264.819
Customer maintenance manual
Bosch Security Systems LLC
7
Troubleshooting
7.1
Troubleshooting chart
Check
plugs
Check
main
cord
Check
amplifier
gain
adjust
Check
overhead
cord
1
Check
speakers
Check
boom
mic
assembly
Check
circuit
boards
Receiver
inoperative
X
X
X
X
X
Microphone
inoperative
X
X
X
X
X
Receiver
intermittent
X
X
X
X
Microphone
intermittent
X
X
X
X
Distorted
receiver signal
X
X
X
Distorted
microphone
signal
X
X
X
Receiver level
varies between
left and right
sides
1
X
X
X
Receiver level
does not meet
specifications
for power on
and power off
X
Microphone
level cannot be
adjusted
properly
X
X
X
1 Only applies to dual-sided versions.
Summary of Contents for Airman 850
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