How can I troubleshoot the poe switch all ports suddenly shut down

HPE Networking Comware Switch Chassis PoE Ethernet 10 slots 10 slot poe switch F1118P-150W is a Unmanaged PoE switch that offers 16 10100 Mbps Base-TX RJ45 ports, 1 101001000 Mbps Base-T RJ45 ports, and 1 1000 Mbps Base-X SFP port 100 burning hot slot free RP-PG83480IX-4F is a Layer 2+ managed PoE switch, It offers 48 gigabit PoE ports and 4 1G10G SFP slots and delivers PoE power budget up to 740W The

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