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12.3
Checking the LEDs
The following explains how to troubleshoot the system by the LEDs.
(1) When the RUN LED turns off
Check item
Is the master/local module mounted correctly?
If the above action does not solve the problem, perform the following tests on the master/local module to check for
hardware error.
• Hardware test (
• Self-loopback test (
(2) When the MODE LED turns off or is flashing
Check item
Is the master/local module set to online mode?
If the above action does not solve the problem, perform the following tests on the master/local module to check for
hardware error.
• Hardware test (
• Self-loopback test (
430
Securely mount the master/local module on the base unit.
Page 64, Section 6.2.1)
Page 66, Section 6.2.2)
Change the mode of the master/local module to Online. (
Section 7.2)
Page 64, Section 6.2.1)
Page 66, Section 6.2.2)
Action
Action
Page 84,
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Table of Contents
Troubleshooting
