• Code: E1-17
• Description: E-Sort PWB image rotating RAM error
  E-Sort PWB image rotating RAM abnormality
• Causes: An image rotating RAM abnormality is detected in the E-Sort PWB. Control circuit hung up due to noises Image rotating RAM peripheral circuit error

• Code: E1-80
• Description: E-Sort PWB communication trouble (protocol)
  Communication trouble between MCU and printer PWB (Protocol error)
• Causes: E-Sort PWB connector disconnection E-Sort PWB MCU PWB harness failure E-Sort Motherboard connector pin breakage. E-Sort PWB ROM defect, data failure

• Code: E1-81
• Description: E-Sort PWB communication trouble (Parity)
  Communication trouble between MCU and printer E-Sort (Parity error)
• Causes: E-Sort PWB connector disconnection E-Sort PWB MCU PWB harness failure E-Sort Motherboard connector pin breakage. E-Sort PWB ROM defect, data failure

• Code: E1-82
• Description: E-Sort PWB communication trouble (Overrun)
  Communication trouble between MCU and E-Sort PWB (Overrun error)
• Causes: E-Sort PWB connector disconnection E-Sort PWB MCU PWB harness failure E-Sort Motherboard connector pin breakage. E-Sort PWB ROM defect, data failure

• Code: E1-84
• Description: E-Sort PWB communication trouble (Framing)
  Communication trouble between MCU and E-Sort PWB (Framing error)
• Causes: E-Sort PWB connector disconnection E-Sort PWB MCU PWB harness failure E-Sort Motherboard connector pin breakage. E-Sort PWB ROM defect, data failure

• Code: E1-88
• Description: E-Sort PWB communication trouble (Time-out)
  Communication trouble between MCU and E-Sort PWB (Time-out error)
• Causes: E-Sort PWB connector disconnection E-Sort PWB and MCU PWB harness failure E-Sort Motherboard connector pin breakage. E-Sort PWB ROM defect, data failure

• Code: E7-03
• Description: LSU trouble
  After the polygon motor becomes active, BD signal (HSYNC) from the LSU is not detected at the specified times (41 +- 10 times within 20msec).
• Causes: LSU connector disconnection or LSU’s inside harness disconnection or breakage Polygon motor rotation abnormality Improper positioning of the laser home position sensor in the LSU. Laser power voltage failure Laser emitting diode abnormality MCU PWB abnormality

• Code: E7-04
• Description: CCD white level trouble
  CCD white reference level which is read during the copy lamp lighting is abnormal.
• Causes: Flat cable installation failure to CCD unit Dirt on the mirror, lens, and reference white plate Copy lamp lighting failure CCD unit installation failure CCD unit abnormality MCU PWB abnormality