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Các lỗi thường gặp

Code :
  • Code: C2201
  • Description: Drum motor lock error • Drum motor lock detection signal to CN7-11 on the engine main PCB remains on after 1 s has elapsed with drum motor REM signal on.
  • Causes: The drum motor connector terminals are loosely connected or are making poor contact. The drum motor does not operate correctly. The engine main PCB is defective.
  • Remedy: Reinsert the connector. Also check for continuity across the terminal wire and if none, remedy or replace the wire. Replace the drum motor and check for correct operation. Replace the engine main PCB and check for correct operation.
  • Code: C5100
  • Description: Main high-voltage error Main grid short detection signal was input to CN6-18 on the engine main PCB when the main high-voltage REM signal was on.
  • Causes: The main charger wire is broken. The main charger grid is broken. The main high-voltage transformer connector terminals are loosely connected or are making poor contact. The main high-voltage transformer is defective.
  • Remedy: Replace the main charger wire. Replace the main charger grid. Reinsert the connector. Also check for continuity across the terminal wire and if none, remedy or replace the wire. Replace the main high-voltage transformer and check for correct operation.
  • Code: C5110
  • Description: Transfer high-voltage error Transfer short detection signal was input to CN3-3 on the engine main PCB when the transfer high-voltage REM signal was on.
  • Causes: The transfer charger wire or separation charger wire is broken. A foreign matter is adhering to the transfer charger wire or separation charger wire. The ST high-voltage transformer connector terminals are loosely connected or are making poor contact. The ST high-voltage transformer is defective.
  • Remedy: Replace the transfer charger wire or the separation charger wire. Clean the transfer charger wire or the separation charger wire. Reinsert the connector. Also check for continuity across the terminal wire and if none, remedy or replace the wire. Replace the ST high-voltage transformer and check for correct operation.
  • Code: C5500
  • Description: Drum surface potential sensor error • Potential sensor input to CN2-5 on the engine main PCB was less than 500 V (3.1 V) (average of 15 inputs) during surface potential correction executed when copying starts or when the detachable unit, eject cover or lower right cover is opened/closed.
  • Causes: The drum surface potential sensor connector terminals make poor contact. The drum surface potential sensor is defective. The drum surface potential PCB is defective. The main charger wire is broken. The main charger grid is broken. The main high-voltage transformer connector terminals are loosely connected or are making poor contact. The main high-voltage transformer is defective. The engine main PCB is defective.
  • Remedy: Check for continuity across the connector terminals and remedy if necessary. Replace the drum surface potential sensor and the drum surface potential PCB and check for correct operation. Replace the drum surface potential sensor and the drum surface potential PCB and check for correct operation. Replace the main charger wire. Replace the main charger grid. Reinsert the connector. Also check for continuity across the terminal wire and if none, remedy or replace the wire. Replace the main high-voltage transformer and check for correct operation. Replace the engine main PCB and check for correct operation.
  • Code: C5650
  • Description: Dark potential error Surface potential is still not within the effective range for target potential after surface potential correction is executed 10 times.
  • Causes:

    The drum surface potential sensor connector terminals are loosely connected or make poor contact. The drum surface potential sensor is defective. The drum surface potential PCB is defective. The main charger wire is broken. The main charger grid is broken. The main high-voltage transformer connector terminals are loosely connected or are making poor contact. The main high-voltage transformer is defective. The engine main PCB is defective

  • Remedy: Check for continuity across the connector terminals and remedy if necessary. Replace the drum surface potential sensor and the drum surface potential PCB and check for correct operation. Replace the drum surface potential sensor and the drum surface potential PCB and check for correct operation. Replace the main charger wire. Replace the main charger grid. Reinsert the connector. Also check for continuity across the terminal wire and if none, remedy or replace the wire. Replace the main high-voltage transformer and check for correct operation. Replace the engine main PCB and check for correct operation.
  • Code: C6000
  • Description: Broken main fixing heater connection • Machine operation still did not become stable after 20 minutes in ambient temperature of 15C or higher. • Machine operation still did not become stable after 30 minutes in ambient temperature lower than 15C. •Temperature detected by fixing unit thermistor 1 was lower than 100C after fixing stabilized.
  • Causes: The main fixing heater is not installed correctly. The main fixing heater has a break. Fixing unit thermistor 1 is not installed correctly. Fixing unit thermistor 1 connector terminals are loosely connected. Fixing unit thermistor 1 has a break. The fixing unit thermostat operates. The fixing heater control circuit on the power source PCB is broken. The engine main PCB or the power source PCB is defective.
  • Remedy: Check and reinstall if necessary. Check for continuity and if none, replace the main fixing heater. Check and reinstall if necessary. Check the connection of CN2-15 on the engine main PCB and continuity across the terminals. If there is abnormality, remedy or replace. Measure the resistance. If the resistance is  ∞Ω, replace fixing unit thermistor 1. Check for continuity. If none, replace the fixing unit thermostat. Run maintenance item U196 by selecting “HEAT1”. If voltage between TB3 and CN2-1 on the power source PCB does not become 100 V AC, replace the PCB. Run maintenance item U196 by selecting “HEAT1”. If CN4-8 on the engine main PCB does not go low, replace the engine main PCB or the power source PCB and check for correct operation.
  • Code: C6020
  • Description:

    Main fixing heater high temperatureerror •Temperature detected by fixing unitthermistor 1 was 195C or higher.

  • Causes: Fixing unit thermistor 1 has shorted. The fixing heater control circuit on the power source PCB is broken.
  • Remedy: Measure the resistance. If the resistance is 0Ω, replace fixing unit thermistor 1. Replace the power source PCB.
  • Code: C6200
  • Description: Broken sub fixing heater connection •Temperature detected by fixing unit thermistor 2 was lower than 100°C after fixing stabilized.
  • Causes: The sub fixing heater is not installed correctly. The sub fixing heater has a break. Fixing unit thermistor 2 is not installed correctly. Fixing unit thermistor 2 connector terminals are loosely connected. Fixing unit thermistor 2 has a break. The fixing unit thermostat operates. The fixing heater control circuit on the power source PCB is broken. The engine main PCB or the power source PCB is defective.
  • Remedy: Check and reinstall if necessary. Check for continuity and if none, replace the sub fixing heater. Check and reinstall if necessary. Check the connection of CN2-14 on the engine main PCB and continuity across the terminals. If there is abnormality, remedy or replace. Measure the resistance. If the resistance is  ∞Ω, replace fixing unit thermistor 2. Check for continuity. If none, replace the fixing unit thermostat. Run maintenance item U196 by selecting gHEAT2h. If voltage between TB3 and CN2-2 on the power source PCB does not become 100 V AC, replace the PCB. Run maintenance item U196 by selecting gHEAT2h. If CN4-9 on the engine main PCB does not go low, replace the engine main PCB or the power source PCB and check for correct operation.
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