Fault Phenomenon: Fassi truck crane FCS remote monitoring system shows the equipment offline, unable to view work cycle data.

Troubleshooting Process:
– Checked SIM card: SIM card overdue or poor contact.
– Checked GPS antenna: antenna open circuit.
– Checked FCS gateway: gateway frozen.
– Replaced SIM card, restarted gateway.

Root Cause: Communication SIM card failure or gateway software freeze.

Required Parts: SIM card, GPS antenna.