Kyocera KM4850w
Error Codes List page 3
|
|
- 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 gHEAT2h. 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 gHEAT2h. 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.
- Code: C6220
- Description: Sub fixing heater high temperature error •Temperature detected by fixing unit thermistor 2 was 200°C or higher.
- Causes: Fixing unit thermistor 2 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 2. Replace the power source PCB.
- Code: C6400
- Description: Zero-cross interruption error • The zero-cross signal was not input into CN3-1B on the engine main PCB for more than 5 s during fixing phase control.
- Causes: Connector terminals are loosely connected or are making poor contact. The power source PCB is defective. The engine main PCB is defective.
- Remedy: Check the connection of CN4-7 on the engine main PCB and CN9-1 on the power source PCB and continuity across the terminals. If there is abnormality, remedy or replace. Check if the zero-cross signal is output from CN9-1 on the power source PCB. If not, replace the PCB. Check if the zero-cross signal is input to CN4-7 on the engine main PCB. If not, replace the PCB.