• Code: C01
• Description: Main motor abnormality: The main motor is not rotating normally.
• Remedy: Check item: Main motor • Motor check • Connector check (CN233, CN16-B) • Harness check Main motor board Check if the LED on the main motor board lights without flickering. MAIN board • Board check • Connector check (CN16-B) • Harness check PLL lock signal Check if the PLL lock signal CN16-B-Pin4 output from the MAIN board is always level “L”. Voltage supplied to CPU Check if the voltage supplied to the CPU input terminal IC33-Pin32 is always "L".
  Parts to be replaced: Main motor MAIN board

• Code: C26
• Description: Peak detection error: Lighting of the exposure lamp (white reference) is not detected when power is turned ON.
• Remedy: Check item: CIS unit Connector check MAIN board • Board check • Connector check (P105) • Harness check
  Parts to be replaced: CIS unit MAIN board

• Code: C41
• Description: Thermistor or heater abnormality at power-ON: Abnormality of service call the thermistor is detected when power is turned ON or the temperature of the fuser roller does not rise in a specified period of time after power is turned ON.
• Remedy: Check item: Thermistor • Connector check • Check if the center, side and edge thermistors are in contact with the surface of the fuser roller properly. • Harness check Heater • Connector check • Check if the heater is broken. • Check if the thermostat is blown. MAIN board • Board check • Connector check (CN17) • Harness check Switching regulator Connector check (J509 and J510)
  Parts to be replaced: CIS unit MAIN board
  Clear the status counter After repairing the matter which caused the error [C41], perform the following: (1) Turn ON the power while pressing the [Clear/Stop] button, then enter the setting mode. (2) Input “400”, then press [START]. (3) Change the current status counter value “1” or “2” to “0”, then press [OK] (to cancel [C41]). (4) Turn the power OFF and then back ON. Make sure that the equipment enters the normal ready state.

• Code: C43
• Description: Thermistor abnormality during warming up or in ready status after abnormality judgment
• Remedy: Check item: Thermistor • Connector check • Check if the center, side and edge thermistors are in contact with the surface of the fuser roller properly. • Harness check Heater • Connector check • Check if the heater is broken. • Check if the thermostat is blown. MAIN board • Board check • Connector check (CN17) • Harness check
  Parts to be replaced: MAIN board
  Clear the status counter After repairing the matter which caused the error [C43], perform the following: (1) Turn ON the power while pressing the [Clear/Stop] button, then enter the setting mode. (2) Input “400”, then press [START]. (3) Change the current status counter value “4” to “0”, then press [OK] (to cancel [C43]). (4) Turn the power OFF and then back ON. Make sure that the equipment enters the normal ready state.

• Code: C44
• Description: Heater abnormality after abnormality judgment: The temperature of the fuser roller has exceeded the range of control (in this case, the main switch turns OFF automatically) or does not even reach the range.
• Remedy: Check item: Thermistor • Connector check • Check if the center, side and edge thermistors are in contact with the surface of the fuser roller properly. • Harness check Heater • Connector check • Check if the heater is broken. • Check if the thermostat is blown. MAIN board • Board check • Connector check (CN17) • Harness check
  Parts to be replaced: MAIN board
  Clear the status counter Change the current status counter value (setting mode: 400) “5”, “7” or “9” to “0” for [C44], taking the same procedure as that for [C41]. * The status counter value is as follows in the following cases. Change them to “0” respectively. • The error occurred during warming-up: “5” • The error occurred after the equipment has become ready: “7” • The temperature detected by the center thermistor is 230°C or higher: “9” • The temperature detected by the side thermistor is 230°C or higher: “9” • The temperature detected by the edge thermistor is 230°C or higher: “9” only during printing.

• Code: C45
• Description: Thermistor abnormality during printing: Abnormality of the thermistor is detected during printing.
• Remedy: Check item: Edge thermistor • Connector check • Check if the edge thermistor is in contact with the surface of the fuser roller properly. • Harness check MAIN board • Board check • Connector check (CN17) • Harness check
  Parts to be replaced: MAIN board
  Clear the status counter Change the current status counter value (setting mode: 400) “6” to “0”.

• Code: C97
• 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) Is the transfer/separation charger installed securely? (6) Check if the transfer/separation charger wire is broken or unhooked. (7) Check if any foreign matter is on the transfer/separation charger wire.

• Code: C9A
• Description: Flash ROM writing error
• Remedy: Replace the MAIN board.