Troubleshooting - Mitsubishi Electric AJ65BTS-RPH User Manual

5. TROUBLESHOOTING

This section describes the measures when a trouble occurred in the
AJ65BTS-RPH.
Perform the troubleshooting indicated in the reference section.
*1
No.
1 The POWER LED is not lit while the module power is ON.
2 The RUN LED is not lit while the module power is ON.
3 The ERR. LED lighted up or blinked.
4 The RD LINK IN/OUT LED does not light up during data link.
The RD LINK 1 to 8 LEDs corresponding to the data linking branch
5
lines do not light up.
*1 If more than one problem occurred simultaneously, perform the
troubleshooting in order of the item numbers.
(1) The POWER LED is not lit while the module power is ON
Troubleshooting is shown below for the case that the POWER LED is not
lit while the module power is ON.
The POWER LED does not light up
Was the module power turned on?
YES
Is the power cable connected correctly?
(Refer to Section 4.3)
YES
Is power supply voltage correct?
(Refer to Section 3.2)
YES
The hardware may have a defect.
Contact your local Mitsubishi representative,
explaining a detailed description of the problem.
Problem
NO
Turn on the module power.
NO
Connect the power cable correctly.
(Refer to Section 4.3)
NO
Correct the power supply voltage.
(Refer to Section 3.2)
34
Reference
section
(1) in this chapter
(2) in this chapter
(3) in this chapter
(4) in this chapter
(5) in this chapter
Completion