Intercom
Operating Instructions
11 Troubleshooting
The following list is intended to support the troubleshooting to keep downtimes as low as possible.
i
Notice!
•
If problems occur that you can not solve yourself, please contact mk messtechnik GmbH for
further help.
•
Please only send in devices after contacting a staff member of mk messtechnik GmbH and
receiving an RMA-number.
Error
Possible Cause
Solution
No or incorrect transmission
(Info LED is blinking)
Device does not receive an
optical signal
Check connectors, cables, and fibers, replace if
necessary
Fiber optic cable soiled
Clean the connectors of the fiber optic cable, see
chapter 7.1
Fiber optic cable or power
cable defective or connected
incorrectly
Use the correct fiber optic cable (62.5/125µm),
check the power cable for defects and replace it
if necessary
Wrong fiber optic cable
selected
Use the correct fiber optic cable (62,5/125µm)
Batteries empty
Charge batteries
Other device turned off
Turn on other device
No transmission, white noise
or silence at the output
Device does not receive an
optical signal
Check fiber optic cable / light emission at the
transmitter
Batteries empty
Charge batteries
Mic gain of other device too
low
Increase mic gain of other device by turning
Volume In knob
Talking in other device is
deactivated
Activate talking in other device with PTT/Mic
button
Speaker volume too low
Increase speaker volume by turning Volume Out
knob
Device can not be turned on /
can not be charged
Batteries defective
Send device to manufacturer
Internal fuse defect
Send device to manufacturer
Charging device or charging
cable defective
Check/exchange charging device/charging cable
Batteries discharged deeply
Charge battery, use different charging device if
necessary (5 cells)
General problems
Defective fiber optic cable /
electrical cable or connector
Change fiber optic cable
Check connectors and cables
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