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Wrong wiring. Wrong DIP switch settings. Error in No. 24 programming.
Selectable functions cannot be operated.
Error in No. 24 programming.
(5) Other troubles
Additional functions cannot be operated.
(2)
Noise is heard from the station
All stations?
Yes
No
Noise encountered during
conversation?
No
Yes
Check power supply of the
exchange
Check wiring between the
exchange and external
equipment (BGM, timer)
Check wiring between EX-200
and FC-210
Replace CC
Noise encountered during
conversation?
No
Check wiring between the exchange
and station
Yes
Wired in a proper pair?
No
Wire in a proper pair
Yes
Cable contains any computers
data lines?
Yes
Separate from computers data lines
No
Replace station
LM
(3)
No conversation can be heard
All stations?
No
Yes
Replace CC
Replace station
LM
(4)
Paging is impossible.
Did you make proper No.24 programming
No
Yes
Make No. 24 programming
Replace LM
CC
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