Mitsubishi Electric AJ65BTS-RPH User Manual page 46

(4) The RD LINK IN/OUT LED is not lit during data link.
This section describes troubleshooting for the case that the RD LINK IN/
OUT LED is not lit.
The RD LINK IN/OUT LED is not lit.
Is the transmission
rate setting identical between
AJ65BTS-RPH and the master station?
(Refer to Section 4.3)
YES
Is the communication cable of
the trunk line side connected correctly?
(Refer to Section 4.4)
YES
Is there any noise source
around the AJ65BTS-RPH or
communication cable?
YES
The hardware may have a defect.
Contact your local Mitsubishi representative,
explaining a detailed description of the problem.
NO
Correct the transmission rate setting
of AJ65BTS-RPH to the same as
the master station. (Refer to Section 4.3)
NO
Connect the communication cable of the
trunk line side correctly. (Refer to Section 4.4)
NO
Move the noise source away from
the AJ65BTS-RPH and communication
cable to a place not influenced by noise.
Completion
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