Sharp AL1620

• Code: U9-82
• Description: Operation control PWB communication trouble (Overrun)
  Communication trouble between MCU and the operation control PWB (Overrun error)
• Causes: Operation control PWB connector disconnection Operation control PWB MCU PWB harness failure
• Remedy: Check the connectors and harness of the operation control PWB and the MCU PWB. Check grounding of the machine.

• Code: U9-84
• Description: Operation control PWB communication trouble (Framing)
  Communication trouble between MCU and the operation control PWB (Framing error)
• Causes: Operation control PWB connector disconnection Operation control PWB MCU PWB harness failure
• Remedy: Check the connectors and harness of the operation control PWB and the MCU PWB. Check grounding of the machine.

• Code: U9-88
• Description: Operation control PWB communication trouble (Time-out)
  Communication trouble between MCU and the operation PWB (Time-out error)
• Causes: Operation control PWB connector disconnection Operation control PWB MCU PWB harness failure
• Remedy: Check the connectors and harness of the operation control PWB and the MCU PWB. Check grounding of the machine.

• Code: U95
• Description: Operation control PWB connection error
• Causes:
• Remedy:

• Code: U99
• Description: Operation control PWB connection error
• Causes:
• Remedy: