Chapter 6 Troubleshooting and Component Replacement
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6.1.6 Failure in Lighting up Part of the Modules in the Cabinet
Causes:
1) Output of the power supply for the modules is faulty.
2) Output of signal which controls the related modules is faulty.
Troubleshooting method:
1) Check DC voltage for the modules.
2) Check the hub card ports or flat cables that control the modules.
6.2 Replacement of Main Components
Before performing maintenance on the LED display, cut off the power supply to ensure
your personal safety and equipment safety.
6.2.1 Replacement of Module
Module replacement under power-on:
Method 1: Use smart bracelet to induce pop-up:
Step
Picture
Description
1
Find out the faulty
module.
2
With induction hand
ring approaching the
module (module
two-thirds height
position in the middle
of the area)
