1) The ports on the sending box are loose, or the signal cables are too long.
2) The output resolution of the playing device or sending box is set incorrectly.
Troubleshooting method:
1) Check whether the DVI cable and signal cable are connected to the display and devices, or whether the length
of signal cables exceeds the maximum transmission distance (the effective transmission distance shall not
exceed 10 m for DVI cable, 100 m for signal cable, 300 m for multi-mode optical fiber, and 15 km for single-mode
optical fiber).
2) Check whether the resolution of the playing device and the sending box is greater than or equal to the resolution
of the screen.
6.1.4 Blinking of a Cabinet in the Display
Causes:
1) The output of receiving card or hub card is faulty.
2) The receiving card program is incorrect.
Troubleshooting method:
1) Check whether the receiving card signal cable and hub card in the cabinet are connected correctly.
2) Check the receiving card program for the cabinet or check the receiving card.
6.1.5 Failure in Lighting up of a Cabinet in the Display
Causes:
1) The power supply, receiving card, or hub card for the cabinet is faulty.
2) Signal output of the previous cabinet is faulty.
Troubleshooting method:
1) Check voltage at the DC side of the power supply and the receiving card power supply. Check the receiving card
signal indicator light in the cabinet. Check whether the hub card contacts properly with the receiving card.
2) Check output signals of the receiving card of the previous cabinet, or replace the signal cable.
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.
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