TELIKOU
MS-500（4+1Channel）Main Station
12
AC 85-265V, 50-
60Hz, ≤45VA
STATION CAPACITY:
No less than 15 beltpacks
ENVIRONMENTAL:
0°-70°C
（
32°-158°
）
RELATIVE HUMIDITY
0-90%
DIMENSION:
19‖(W)x1.75‖(H)x9.48‖(D),482mm x 44.5mm x 241mm
WEIGHT:
2.7kg
VI Troubleshooting
Problem: Volume Level on Panel Speaker
Cause: Output level automatic turned down by 6dB to help reduce feedback when microphone is
turned on.
Solution: Turn off microphone when it is not need.
Problem: Power LED wink
Cause 1: Short circuit
Solution 1: Remove all the intercom cables from MS-500. Check all channels one by one, until find
the short point.
Cause 2: Overload
Solution 2: Decrease the numbers of end user stations; disperse end user stations to other main
station; extra power supply
Problem: System feedback (Acoustical)
Cause 1: Listen volume level control on this station or any remote station is too high
Solution 1: turn down the volume
Cause 2: Sidetone null control on this station or any remote station is not adjusted correctly
Solution 2: Adjust the sidetone null control. Refer to
21) Sidetone zero-adjusting
section of this
manual.
Cause 3: Channel un-terminated.
