• Code: C5A0
• Description: EEPROM communication abnormality (LGC board)
• Remedy: (1) Check if the EEPROM is installed properly. (2) Replace the EEPROM. (3) If the error still occurs, replace the LGC board.

• Code: C8E0
• Description: ADF communication abnormality: The system has to be stopped because the control abnormality occurred
• Remedy: 1. Turn the power OFF and then back ON to check if the equipment operates normally.

• Code: C940
• Description: Engine-CPU abnormality
• Remedy: Is the “Call for Service” displayed even after the power is turned OFF and back ON? NO Leave it and see what happens. YES 1. Check if the circuit pattern between the Engine-CPU and FROM is short circuited or open circuited. 2. Replace the LGC board if this error occurs frequently.

• Code: C970
• Description: High-voltage transformer abnormality: Leakage of the main charger is detected.
• Remedy: (1) Is the main charger installed securely? (2) Check if the spring of high-voltage supply contact point is deformed. (3) Check if the needle electrode is broken or the main charger grid is deformed. (4) Check if any foreign matters is on the needle electrode or the main charger grid. (5) Check if the transfer roller and the separation needle are installed securely. (6) Check if the transfer roller or the separation needle is removed. (7) Check if there is any foreign matter attached on the transfer roller or the separation needle.

• Code: CA10
• Description: Polygonal motor abnormality: The polygonal motor is not rotating normally.
• Remedy: Is the polygonal motor rotating? NO 1. Check if the connector of the harness is disconnected between LGC board (CN314) and the laser optical unit. Reconnect it securely if so. Even if the connector is not apparently disconnected, it may be connected loosely. Therefore check carefully that it is secure. 2. Check if the harness is open circuited and the connector pin is disconnected. 3. Check if the conductor pattern on the LGC board is short circuited or open circuited. 4. Replace the laser optical unit. 5. Replace the LGC board. YES 1. Check if the conductor pattern on the LGC board is short circuited or open circuited. 2. Replace the LGC board. 3. Replace the laser optical unit.

• Code: CA20
• Description: H-Sync detection error: H-Sync detection PC board cannot detect laser beams.
• Remedy: Are the harness open circuited and the connectors disconnected between the LGC board (CN313) and the laser optical unit? YES Even if the connector is not apparently disconnected, it may be connected loosely. Therefore check carefully that it is secure. NO 1. Replace the LGC board. 2. Replace the laser optical unit.

• Code: CB00
• Description: Finisher not connected
• Remedy: MJ-1101 1. Check if the MJ-1101 is set as the specified finisher on the equipment. 2. Check if the harness connecting the converter PC board and the finisher controller PC board is disconnected or open circuited. 3. Check if the conductor pattern on the converter PC board is open circuited or short circuited. 4. Check if the conductor pattern on the finisher controller PC board is open circuited or short circuited. 5. Replace the converter PC board. 6. Replace the finisher control PC board.

• Code: CB01
• Description: Finisher communication error
• Remedy: 1. Check if the MJ-1101 is set as the specified finisher on the equipment. 2. Check if the harness connecting the converter PC board and the finisher controller PC board is disconnected or open circuited. 3. Check if the conductor pattern on the converter PC board is open circuited or short circuited. 4. Check if the conductor pattern on the finisher controller PC board is open circuited or short circuited. 5. Replace the converter PC board. 6. Replace the finisher control PC board.