Ethernet Physical Layer Fault

Was bedeutet PHY4 Off ?

The PHY4 Green LED is OFF, indicating a fault in the Ethernet physical layer. This typically suggests a hardware issue with the network communication interface on the CCU_SR module, preventing reliable network connectivity.

• The Ethernet Physical Layer (PHY4) has detected a fault.
• Damaged or disconnected Ethernet cable.
• Faulty network interface card (NIC) on the device.
• Signal integrity issue on the Ethernet link.
• Problem with the PHY chip on the board.

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1. 1

   Exchange the CCU_SR module, as the fault is internal to its Ethernet communication hardware.