Description: Drive system related service call Main motor abnormality: The main motor is not rotating normally.
Causes:
Remedy: Step Check Item Result Measure Next Step 1 Is the main motor working? (Perform the output check in the test mode: 04-101/151) Yes 2 No 1. Check if the connector CN1 of the main motor is disconnected. 2. Check if the connector CN16 on the MAIN board is disconnected. 3. Check if the connector pins are disconnected and the harnesses are open circuited. 4. Check if the conductor patterns on the main motor board and MAIN board are short circuited or open circuited. 5. Replace the main motor. 6. Replace the MAIN board. 2 Is the LED on the main motor board lit without flickering? Yes 3 No 1. Check if the connector pins are disconnected and the harnesses are open circuited. 2. Check if the conductor patterns on the main motor board and MAIN board are short circuited or open circuited. 3. Replace the main motor. 4. Replace the MAIN board. 3 1. Check if the PLL lock signal CN305-B8 output from the MAIN board is always level “L”. 2. Check if the voltage supplied to the CPU input terminal IC24-12 is always “L”. 3. Replace the MAIN board.
Code: C21
Description: CIS unit initialization error
Causes:
Remedy: Step Check Item Result Measure Next Step 1 Does the CIS case move to its home position when the power is turned ON? Yes 1. Check if the CIS home position sensor is installed properly. 2. Check if any of the connectors is disconnected from the CIS home position sensor. 3. Check if the connector CN14 on the MAIN board is disconnected. 4. Check if the connector pins are disconnected and the harnesses are open circuited. 5. Check if the conductor patterns on the MAIN board are short circuited or open circuited. 6. Replace the CIS home position sensor. 7. Replace the MAIN board. No 2 2 Is there any abnormal sound when the CIS case is moving? Yes 1. Check if the CIS unit drive belt-1 or the CIS unit drive belt-2 is damaged. 2. Check if the belt tension of the CIS unit drive belt-1 or the CIS unit drive belt-2 is loose. 3. Check if the joint of the belt stopper and the CIS unit drive belt-1 is loose. No 3 3 1. Check if the tension of the CIS unit drive belt-1 or the CIS unit drive belt-2 is too tight. 2. Check if any of the connectors of the scan motor is disconnected. 3. Check if the connector CN18 on the MAIN board is disconnected. 4. Check if the connector pins are disconnected and the harnesses are open circuited. 5. Check if the conductor patterns on the MAIN board are short circuited or open circuited. 6. Replace the scan motor. 7. Replace the MAIN board.
Code: C26
Description: Peak detection error / FPGA configuration error: Lighting of the exposure lamp (white reference) is not detected when power is turned ON.
Causes:
Remedy: 1 Does the exposure lamp light? (Perform the output check in the test mode: 04- 267) Yes Replace the CIS unit. No 1. Check if the connector of the CIS unit are disconnected. 2. Check the MAIN board if the connector (CN6) is disconnected and the harness is short circuited or open circuited. 3. Check if the conductor pattern on the MAIN board is short circuited or open circuited. 4. Replace the MAIN board. 5. Replace the CIS unit.
Code: C41
Description: Fuser unit related service call. 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.
Causes: MAIN board Switching regulator
Remedy: Check the thermistors • Check if the connectors are disconnected. • Check if the center, side and edge thermistors are in contact with the surface of the fuser roller properly. • Check if the harnesses of the center, side and edge thermistors are open circuited. Check the heater • Check if the heater is broken. • Check if the connector of the heater is disconnected. • Check if the thermostat is blown. Check the MAIN board • Check if the connectors CN17 are disconnected. • Check if the conductor pattern on the MAIN board is short circuited or open circuited. • Replace the MAIN board. Check the switching regulator • Check if the connectors CN108 are disconnected. Clear the status counter After repairing the matter which caused the error [C41], perform the following: 1. Turn ON the power while [0] and [8] are pressed simultaneously. 2. Key in “400”, then press [START]. 3. Change the current status counter value “1” or “2” to “0”, then press [ENTER] or [INTERRUPT] (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: Fuser unit related service call. Thermistor abnormality during warming up or in ready status after abnormality judgment
Causes: MAIN board Switching regulator
Remedy: Check the thermistors • Check if the connectors are disconnected. • Check if the center, side and edge thermistors are in contact with the surface of the fuser roller properly. • Check if the harnesses of the center, side and edge thermistors are open circuited. Check the heater • Check if the heater is broken. • Check if the connector of the heater is disconnected. • Check if the thermostat is blown. Check the MAIN board • Check if the connectors CN17 are disconnected. • Check if the conductor pattern on the MAIN board is short circuited or open circuited. • Replace the MAIN board. Check the switching regulator • Check if the connectors CN108 are disconnected. Clear the status counter After repairing the matter which caused the error [C43], perform the following: 1. Turn ON the power while [0] and [8] are pressed simultaneously. 2. Key in “400”, then press [START]. 3. Change the current status counter value “4” to “0”, then press [ENTER] or [INTERRUPT] (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: Fuser unit related service call. 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.
Causes: MAIN board Switching regulator
Remedy: Check the thermistors • Check if the connectors are disconnected. • Check if the center, side and edge thermistors are in contact with the surface of the fuser roller properly. • Check if the harnesses of the center, side and edge thermistors are open circuited. Check the heater • Check if the heater is broken. • Check if the connector of the heater is disconnected. • Check if the thermostat is blown. Check the MAIN board • Check if the connectors CN17 are disconnected. • Check if the conductor pattern on the MAIN board is short circuited or open circuited. • Replace the MAIN board. Check the switching regulator • Check if the connectors CN108 are disconnected. Clear the status counter Change the current status counter value (08-400) “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.