SC300 (Engine: Charge, Development)

SC300-01

D

Charge Roller Power Pack Output Error (K)

SC300-02

D

Charge Roller Power Pack Output Error (C)

SC300-03

D

Charge Roller Power Pack Output Error (M)

SC300-04

D

Charge Roller Power Pack Output Error (Y)

SC300-05

D

Charge Roller Power Pack Output Error (S)

The interrupt that checks the status of the PCU power pack every 10 ms detected SC signals 15 times consecutively.

Details:

In case of an overcurrent, the Charge Roller Power Pack outputs SC signals. The machine monitors it, and issues an SC when an error occurs.

• High voltage harness shorted.

• Leakage around the charge roller caused by a conductive object.

• Leak of the charged bias caused by the drum exposure layer error (Exposure layer disappearance, drum surface is damaged).

• Charge Bias Power Pack defective

1. Check the charge roller.

   Remove the conductive object and clean the charge roller.

2. Check the harness of charge bias power pack.

   Replace the harness if it is shorted.

3. Check the drum.

   Replace the drum if exposure layer is damaged (the aluminum bare pipe part appears).

4. Replace the charge bias power pack.

SC312-01

D

Charge FB Voltage Error (K)

SC312-02

D

Charge FB Voltage Error (C)

SC312-03

D

Charge FB Voltage Error (M)

SC312-04

D

Charge FB Voltage Error (Y)

SC312-05

D

Charge FB Voltage Error (S)

From 80ms after AC power is turned ON, the unit monitors the FB voltage of AC charge for movement 15 times at intervals of 20ms; if 0.3V or less is detected 15 times in a row, it lights the SC of the corresponding color and judges the mechanism to be working.

• High-voltage harness damaged or not connected correctly.

• Charge roller or drum not installed

• Charge bias power pack defective

• Check the harness of charge bias power pack.

  Reconnect /Replace the harness

• Check the charge roller.

  Set the charge roller if not set.

• Check the drum.

  Set the drum if not set.

• Replace the charge bias power pack.

SC320-01

D

Development Power Pack Output Error (K)

SC320-02

D

Development Power Pack Output Error (C)

SC320-03

D

Development Power Pack Output Error (M)

SC320-04

D

Development Power Pack Output Error (Y)

SC320-05

D

Development Power Pack Output Error (S)

When SC signals are detected 25 times consecutively in 20ms intervals (500 msec).

Details:

When the development power pack is shorted, the development power pack detects it by means of an SC signal (HIGH level). The IOB monitors the SC signals as explained above.

• Development power pack shorted

Disconnect the high voltage cable from the output terminal of the development power pack of the corresponding color, and check the following points.

• PWM: Check the signal of the corresponding color.

  If the signal is fixed to HIGH during photocopying process, replace the harness or the IOB.

• Check the output of the development power pack of the corresponding color.

  If the output is fixed to HIGH during photocopying process, replace the power pack.

• If the output is normal during photocopying process, test the resistance between the highvoltage cable and the ground. If resistance is “0” or nearly “0”, replace the high-voltage harness or PCU.

SC324-01

D

Development Motor Error(K)

SC324-02

D

Development Motor Error (C)

SC324-03

D

Development Motor Error (M)

SC324-04

D

Development Motor Error (Y)

SC324-05

D

Development Motor Error (S)

• Malfunction due to Development Motor being unplugged

• Malfunction due to abnormal increase in development unit torque (such as overload due to bearing lock).

• Malfunction due to motor driver failure

• Reconnect the motor harness

• Remove internal overload of development unit and return to the normal torque

• Replace the Development Motor.

SC328-00

D

Development motor: Y: Lock

Error detected by the TDCU.

If a command sent from the TDCU indicates an error, the engine issues an SC.

ASAP command: Motor lock detection setting value (engine to TDCU): 0x5B

ASAP command: SC detection notification (TDCU to engine): 0x56_0x01

Details:

When the motor is on, each lock signal is checked every 100 milliseconds. If the High status is detected 20 times consecutively, the machine determines that the motor is not running correctly. The machine issues an SC and stops the motor.

• Motor defective

• Connecter disconnected

• Harness broken

• IOB defective

• Unit torque increased.

• Replace the motor.

• Reconnect the connector.

• Replace the harness.

• Replace the IOB.

• Replace the unit.

• Replace the driven unit.

SC328-01

D

Toner supply motor error (K): Bottle

SC328-02

D

Toner supply motor error (C) : Bottle

SC328-03

D

Toner supply motor error (M) : Bottle

SC328-04

D

Toner supply motor error (Y) : Bottle

SC328-05

D

Toner supply motor error (S) : Bottle

Detected a lock signal which indicates overcurrent in the toner supply bottle motor.

Details:

When a toner supply bottle motor is on, it is checked every 100 milliseconds for lock signals (motor overcurrent 670mA). The following steps are executed every second.

• If the lock signal was detected 9 times in 10 samplings, the lock counter increases by one. When the lock counter value is 25 or larger, the SC is issued.

• If the lock signal was detected 8 times or less in 10 samplings, the lock counter is cleared.

Note:

• If the samplings end before reaching the tenth time (due to bottle replacement etc.), the lock counter value is kept as is. Sampling starts again the next time the motor runs.

• The lock counter is cleared when the machine is turned off (also when the machine enters sleep mode, in which the plotter is turned off) or when an SC is issued.

• Toner is not filled in all colors after determining the SC with any color until the machine stops.

• The foregoing detection is not performed if all revisions of the board (6 bit) are 0.

• Toner bottle not set correctly or the torque is large.

• Toner bottle broken or defective

• Motor defective

• Toner bottle not set correctly, toner bottle broken, or large torque: After the machine stops, ask the user to remove the toner bottle, shake it and set it again. Then cycle the machine off/on to return from SC status.

• Toner bottle broken or defective: Ask the user to remove the toner bottle and set a normal bottle. Then cycle the machine off/on to return from SC status.

• Motor defective: Turn off the machine and replace the motor. Then cycle the machine off/on to return from SC status.

• Reset or replace the toner bottle.

• Replace the toner bottle motor.

SC336-01

D

Developer Set Error (K)

SC336-02

D

Developer Set Error (C)

SC336-03

D

Developer Set Error (M)

SC336-04

D

Developer Set Error (Y)

SC336-05

D

Developer Set Error (S)

When the TD sensor control voltage (Vtcnt) is 4.3V, the TD sensor output (Vt) is less than 0.7V.

Details:

When executing TD sensor initialization (SP3-030), the machine checks the development unit for the presence of developer. If the error condition is detected at this point, the machine determines that there is no developer and issues the SC.

• There is an extremely low amount of developer.

• Replace the developer.

SC348-01

D

Toner supply error (K) : Sub hopper 1 (front)

SC348-02

D

Toner supply error (C) : Sub hopper 1 (front)

SC348-03

D

Toner supply error (M) : Sub hopper 1 (front)

SC348-04

D

Toner supply error (Y) : Sub hopper 1 (front)

SC348-05

D

Toner supply error (S) : Sub hopper 1 (front)

Error occurs if ID Pattern adhesion (SP3-300-***) < Lower limit threshold (SP3-301-***), and Toner Supply Clutch cumulative time (SP3-301-***) > Feed counter threshold (SP3301-031).

Details:

This SC is issued when the toner end sensor1 continues detecting the presence of toner falsely. The presence of toner may be detected falsely in the following situations.

• Toner end sensor 1 cleaner spring broken

• Toner end sensor 1 cleaner spring not set correctly

Toner end sensor 1 defective

• Toner end sensor 1 cleaner spring broken

• Toner end sensor 1 cleaner spring not set correctly

• Toner end sensor 1 defective

• Replace the toner supply unit.

SC348-11

D

Toner supply error (K) : Sub hopper 2 (Rear)

SC348-12

D

Toner supply error (C) : Sub hopper 2 (Rear)

SC348-13

D

Toner supply error (M) : Sub hopper 2 (Rear)

SC348-14

D

Toner supply error (Y) : Sub hopper 2 (Rear)

Error occurs if ID Pattern adhesion (SP3-300-***) < Lower limit threshold (SP3-301-***), and Sub hopper 1 toner filling counter interval (SP3-301-***) > Threshold (SP3301-031).

Details:

This SC is issued when the toner end sensor 2 continues detecting the presence of toner falsely. The presence of toner may be detected falsely in the following situations.

• Toner end sensor 2 cleaner sheet broken

• Toner end sensor 2 cleaner sheet not set correctly

• Toner end sensor 2 defective

• Diaphragm pump defective

• Toner end sensor 2 cleaner spring broken

• Toner end sensor 2 cleaner spring not set correctly

• Toner end sensor 2 defective

• Replace the Sub hopper 2 (Rear).

• Replace the diaphragm pump.

SC351-01

C

Development sleeve home position signal detection error (K)

SC351-02

C

Development sleeve home position signal detection error (C)

SC351-03

C

Development sleeve home position signal detection error (M)

SC351-04

C

Development sleeve home position signal detection error (Y)

SC351-05

C

Development sleeve home position signal detection error (S)

Under the DEMS is enable (SP3-600-040 is set to “1”) , the home position sensor cannot detect the home position signal within specified time during development motor rotating.

Details:

This SC is issued when the toner end sensor1 continues detecting the presence of toner falsely. This presence of toner may be detected falsely in the following situations.

• Toner end sensor1 cleaner spring broken

• Toner end sensor1 cleaner spring not set correctly

• Toner end sensor1 defective

• Drum Motor HP Sensor defective/loose connection/harness damaged/Connecter disconnected

• Drum Motor HP Sensor r smudged

• Check if the Drum Motor HP Sensor connector is connected correctly.

• Check the Drum Motor HP Sensor for abnormality.

• Replace the Drum Motor HP Sensor if it is abnormal.

• Check the Drum Motor HP Sensor for smudges. Blow it with air and check again.

SC360-01

D

TD sensor adjustment error (K)

SC360-02

D

TD sensor adjustment error (C)

SC360-03

D

TD sensor adjustment error (M)

SC360-04

D

TD sensor adjustment error (Y)

SC360-05

D

TD sensor adjustment error (S)

During TD sensor initialization, the TD sensor output voltage (Vt) cannot be adjusted to the target range (target value ± 0.2V).

• TD sensor defective

• Developer is not new

• Replace the development unit.

SC361-01

D

TD sensor output error: Upper Limit (K)

SC361-02

D

TD sensor output error: Upper Limit (C)

SC361-03

D

TD sensor output error: Upper Limit (M)

SC361-04

D

TD sensor output error: Upper Limit (Y)

SC361-05

D

TD sensor output error: Upper Limit (S)

The TD sensor output (Vt) (SP3-210-001 to 004) exceeded 4.7 V 20 times consecutively.

• TD sensor connecter disconnected(Loose connection)

• Toner density extremely low

1. Check the TD sensor connection.

2. Replace the development unit if TD sensor harness is damaged.

3. Replace the developer.

4. If the problem persists, replace the development unit.

SC362-01

D

TD sensor output error: Lower limit (K)

SC362-02

D

TD sensor output error: Lower limit (C)

SC362-03

D

TD sensor output error: Lower limit (M)

SC362-04

D

TD sensor output error: Lower limit (Y)

SC362-05

D

TD sensor output error: Lower limit (S)

The TD sensor output (Vt) (SP3-210-001 to 005) fell below 0.5 V 10 times consecutively.

• TD sensor not connected correctly

• TD sensor defective

1. Check the TD sensor connection.

2. Replace the development unit if TD sensor harness is damaged.

3. Replace the developer.

4. If the problem persists, replace the development unit.

SC370-01

D

ID sensor calibration error (F)

SC370-02

D

ID sensor calibration error (C)

SC370-03

D

ID sensor calibration error (R)

The voltage reading during process control for Vsg_reg was not within the correct range (4.0 ± 0.5 V).

Intermediate Transfer Belt corrugation / belt skew

• Check the Intermediate Transfer Belt condition.

  Correct the belt if corrugation/belt skew is occurred.

• If none of the above apply, an ID sensor failure is very likely so replace the ID sensor.

SC371-01

D

ID sensor output error (F)

SC371-02

D

ID sensor output error (C)

SC371-03

D

ID sensor output error (R)

The ID sensor voltage reading of the light reflected directly (Vsg_reg) is below 0.5 V.

• ID sensor connector disconnected/loose connection

• ID sensor defective

• Check if the ID sensor connector is connected. Connect it if disconnected.

• Replace the ID sensor if defective.

SC372-01

C

ID sensor LED current upper limit error (F)

SC372-02

C

ID sensor LED current upper limit error (C)

SC372-03

C

ID sensor LED current upper limit error (R)

The ID sensor LED current exceeds the upper limit (SP3-320-015)

• ID sensor smudged

• ID sensor deteriorated

• ITB deteriorated (smudges, filming)

• Check the ID sensor window. Wipe it with a damp cloth if dirty (never use dry cloth).

• If the ID sensor is deteriorated, replace it.

• If the ITB is smudged, check the ITB unit.

SC373-01

D

ID Sensor Pattern Density High Error (K)

SC373-02

D

ID Sensor Pattern Density High Error (C)

SC373-03

D

ID Sensor Pattern Density High Error (Y)

SC373-04

D

ID Sensor Pattern Density High Error (M)

SC373-05

D

ID Sensor Pattern Density High Error (S)

ID Pattern adhesion (SP3-300-001 to 005) > Upper limit threshold (SP3-301-081 to 085)

Excessive toner supply

Replace the toner supply unit.

SC374-01

D

ID Sensor Pattern Density Low Error (K)

SC374-02

D

ID Sensor Pattern Density Low Error (C)

SC374-03

D

ID Sensor Pattern Density Low Error (M)

SC374-04

D

ID Sensor Pattern Density Low Error (Y)

SC374-05

D

ID Sensor Pattern Density Low Error (S)

ID Pattern adhesion (SP3-300-001 to 005) < Lower limit threshold (SP3-301-091 to 095) for three times in a row.

• Abnormal development bias (Continuity fault)

• Image transfer error

• Check development bias continuity.

• Check the image transfer unit.

SC381-01

D

Potential sensor output high error (K)

SC381-02

D

Potential sensor output high error (C)

SC381-03

D

Potential sensor output high error (M)

SC381-04

D

Potential sensor output high error (Y)

SC381-05

D

Potential sensor output high error (S)

Vd(700) greater than 800[-V]

Potential sensor dirty (foreign object, such as toner, entering the probe window)

• Check if the potential sensor probe is dirty.

• Use a blower brush to clean the window of the potential sensor probe, then check the sensor again.

• If this does not solve the problem, replace the potential sensor probe.

SC382-01

D

Potential sensor output low error (K)

SC382-02

D

Potential sensor output low error (C)

SC382-03

D

Potential sensor output low error (M)

SC382-04

D

Potential sensor output low error (Y)

SC382-05

D

Potential sensor output low error (S)

Vd(700) lesser than 500[-V]

• Potential sensor probe connector disconnected

• Potential sensor probe defective

• Potential sensor board defective

• Replace the potential sensor probe.

SC390-00

C

Drum Motor error (k) 1

• When the main power on

  The machine issues this SC if counter of SP7-987-001 is “3”

• Error at motor startup/motor running normally

  When an error command from TDCU detected and if 1 is added to the SP7-987-001 counter and the resulting value of SP7-987-001 is 3.

Abnormal increase in PCU torque (overload due to the cleaning blade getting caught)

Return to the normal torque by clearing the overload in the PCU. And then execute SP7-988-001 and reset counter SP7-987-001.

SC391-00

A

Drum Motor error (C)1

• At motor startup/motor running normally

  When an error command from TDCU detected and if 1 is added to the SP7-987-002 counter and the resulting value of SP7-987-002 is 3.

Abnormal increase in PCU torque (overload due to the cleaning blade getting caught)

Return to the normal torque by clearing the overload in the PCU. And then execute SP7-988-002 and reset counter SP7-987-002.

SC392-00

A

Drum Motor error (M) 1

• At motor startup/motor running normally

  When an error command from TDCU detected and if 1 is added to the SP7-987-003 counter and the resulting value of SP7-987-003 is 3.

Malfunction due to abnormal increase in PCU torque (overload due to the cleaning blade getting caught)

Return to the normal torque by clearing the overload in the PCU. And then execute SP7-988-003 and reset counter SP7-987-003.

SC393-00

A

Drum Motor error (Y) 1

• At motor startup/motor running normally

  When an error command from TDCU detected and if 1 is added to the corresponding SP7-987-004 counter and the resulting value of corresponding SP7-987-004 is 3.

Abnormal increase in PCU torque (overload due to the cleaning blade getting caught)

Return to the normal torque by clearing the overload in the PCU. And then execute SP7-988-004 and reset counter SP7-987-004.

SC394-00

A

Drum Motor error (S) 1

• At motor startup/motor running normally

  When an error command from TDCU detected and if 1 is added to the corresponding SP7-987-005 counter and the resulting value of corresponding SP7-987-005 is 3.

Abnormal increase in PCU torque (overload due to the cleaning blade getting caught)

Return to the normal torque by clearing the overload in the PCU. And then execute SP7-988-005 and reset counter SP7-987-005.

SC395-01

SC395-05

D

Drum motor error (K): Encoder pulse not detected

SC396-01

SC396-05

D

Drum motor error (C): Encoder pulse not detected

SC397-01

SC397-05

D

Drum motor error (M): Encoder pulse not detected

SC398-01

SC398-05

D

Drum motor error (Y): Encoder pulse not detected

SC399-01

SC399-05

D

Drum motor error (S): Encoder pulse not detected

After the drum motor starts up, if the encoder fails to interrupt within 100ms.

• Abnormal increase in PCU torque (overload due to the cleaning blade getting caught)

• Drum motor defective

• Drum motor connector unplugged

• Motor driver defective

• Clear the overload in the PCU

• Replace the drum motor

• Reconnect the drum motor connector

• Replace the TDCU (motor driver)

SC395-02

SC395-10

D

Drum motor error (K): Encoder pulse lack

SC396-02

SC396-10

D

Drum motor error (C): Encoder pulse lack

SC397-02

SC397-10

D

Drum motor error (M): Encoder pulse lack

SC398-02

SC398-10

D

Drum motor error (Y): Encoder pulse lack

SC399-02

SC399-10

D

Drum motor error (S): Encoder pulse lack

Error occurs when the number of pulses per time of 1 drum encoder cycle is counted and the total number of pulses drops below 75% (1500 pulses) of the number of pulses per normal cycle.

• Drum motor defective

• Drum motor connector unplugged

• Motor driver defective

• Clear the overload in the PCU

• Replace the drum motor

• Reconnect the drum motor connector

• Replace the TDCU (motor driver)

SC395-03

SC395-15

D

Drum motor error (K): Encoder chattering(Excessive pulse)

SC396-03

SC396-15

D

Drum motor error (C): Encoder chattering(Excessive pulse)

SC397-03

SC397-15

D

Drum motor error (Y): Encoder chattering(Excessive pulse)

SC398-03

SC398-15

D

Drum motor error (Y): Encoder chattering(Excessive pulse)

SC399-03

SC399-15

D

Drum motor error (S): Encoder chattering(Excessive pulse)

Error occurs when the number of chattering per time of 1 drum encoder cycle is counted and the chatter exceeds 25% of the number of pulses per normal cycle.

The condition for counting the occurrence of chatter is to count up when encoder data is 75% or less of the ideal count value.

• Drum motor defective

• Drum motor connector unplugged

• Motor driver defective

• Clear the overload in the PCU

• Replace the drum motor

• Reconnect the drum motor connector

• Replace the TDCU (motor driver)

SC395-41

D

Drum motor error (K): Hole error

SC396-41

D

Drum motor error (C): Hole error

SC397-41

D

Drum motor error (Y): Hole error

SC398-41

D

Drum motor error (Y): Hole error

SC399-41

D

Drum motor error (S): Hole error

If the hole becomes HorL with three-phase.

• Drum motor defective

• Drum motor connector unplugged

• Motor driver defective

• Clear the overload in the PCU

• Replace the drum motor

• Reconnect the drum motor connector

• Replace the TDCU (motor driver)

SC395-51

D

Drum motor error (K): Cumulative speed error

SC396-51

D

Drum motor error (C): Cumulative speed error

SC397-51

D

Drum motor error (M): Cumulative speed error

SC398-51

D

Drum motor error (Y): Cumulative speed error

SC399-51

D

Drum motor error (S): Cumulative speed error

The RPM of the motor is checked every 10ms and when it is off the target value by +/-3%, it counts up and when it is within +/-3%, it counts down; an error occurs when the count of the counter is 40 or more (400ms or more).

• Drum motor defective

• Motor driver defective

• Abnormal increase in PCU torque (overload due to the cleaning blade getting caught)

• Clear the overload in the PCU

• Replace the drum motor

• Reconnect the drum motor connector

• Replace the TDCU (motor driver)

SC395-52

D

Drum motor error (K): Overload error

SC396-52

D

Drum motor error (C): Overload error

SC397-52

D

Drum motor error (M): Overload error

SC398-52

D

Drum motor error (Y): Overload error

SC399-52

D

Drum motor error (S): Overload error

If the load exceeds the limit for 3 seconds, the safety standard is determined NG and the control turns it OFF.

Abnormal increase in PCU torque (overload due to the cleaning blade getting caught)

• Clear the overload in the PCU

• Replace the drum motor

• Reconnect the drum motor connector

• Replace the TDCU (motor driver)

SC395-55

D

Drum motor error (K): Traction output shaft overload error

SC396-55

D

Drum motor error (C): Traction output shaft overload error

SC397-55

D

Drum motor error (M): Traction output shaft overload error

SC398-55

D

Drum motor error (Y): Traction output shaft overload error

SC399-55

D

Drum motor error (S): Traction output shaft overload error

Occurs if the status of the hole has changed, but the encoder signal has not changed. The deceleration mechanism is slipping due to the overload on the output shaft.

Malfunction due to abnormal increase in PCU torque (overload due to the cleaning blade getting caught)

Clear the overload in the PCU