• Code: E1-16
• Description: IMC board compression image store memory error
  Access error of IMC standard compression memory
• Causes: IMC board abnormality
• Remedy: Replace the IMC PWB.

• Code: E1-17
• Description: IMC board smoothing IC error
  IMC smoothing IC abnormality
• Causes: IMC board abnormality
• Remedy: Replace the IMC PWB.

• Code: E1-80
• Description: IMC PWB communication trouble (protocol)
  Communication trouble between MCU and IMC PWB (Protocol error)
• Causes: IMC PWB connector disconnection Motherboard connector pin breakage IMC PWB ROM defect, data failure
• Remedy: Check the connectors of the IMC PWB and MCU PWB. Check the grounding of the copier. Check the ROM of the IMC PWB.

• Code: E1-81
• Description: IMC PWB communication trouble (Parity)
  Communication trouble between MCU and printer IMC (Parity error)
• Causes: IMC PWB connector disconnection Motherboard connector pin breakage IMC PWB ROM defect, data failure
• Remedy: Check the connectors of the IMC PWB and MCU PWB. Check the grounding of the copier. Check the ROM of the IMC PWB.

• Code: E1-82
• Description: IMC PWB communication trouble (Overrun)
  Communication trouble between MCU and IMC PWB (Overrun error)
• Causes: IMC PWB connector disconnection Motherboard connector pin breakage IMC PWB ROM defect, data failure
• Remedy: Check the connectors of the IMC PWB and MCU PWB. Check the grounding of the copier. Check the ROM of the IMC PWB.

• Code: E1-84
• Description: IMC PWB communication trouble (Framing)
  Communication trouble between MCU and IMC PWB (Framing error)
• Causes: IMC PWB connector disconnection Motherboard connector pin breakage IMC PWB ROM defect, data failure
• Remedy: Check the connectors of the IMC PWB and MCU PWB. Check the grounding of the copier. Check the ROM of the IMC PWB.

• Code: E1-88
• Description: IMC PWB communication trouble (Timeout)
  Communication trouble between MCU and IMC PWB (Time-out error)
• Causes: IMC PWB connector disconnection Motherboard connector pin breakage IMC PWB ROM defect, data failure
• Remedy: Check the connectors of the IMC PWB and MCU PWB. Check the grounding of the copier. Check the ROM of the IMC PWB.

• Code: E7-02
• Description: LSU trouble
  BD signal from LSU is not detected in a constant cycle. (Kept OFF or ON)
• Causes: LSU connector or LSU inside harness trouble or disconnection Polygon motor rotation abnormality Laser does not illuminate. MCU PWB failure
• Remedy: Check for disconnection of the LSU connector. Check the LSU operation with SIM 61-1. Check that the polygon motor rotates normally. Check laser LED lighting. LSU replacement Replace the MCU PWB.