A printer error occurred, and X corresponds to the following issue: 1= Cartridge fan error(fan# 5), 3=Power-supply-fan error (fan # 1), 4=Formatter fan (fan #2) 5=Delivery-fan(front)(fan#4), 6=Face-down tray error, 7= Delivery-fan ( back) ( fan # 3), 8=Duplexer-fan error.
1. Reboot the printer.
2. Reseat the connectors to the specified fan and DC controller.
3. Ensure the specified fan is not being blocked by any thing to prevent it from turning.
4. Replace the specified fan.
5. Replace the DC controller.