SC400 (Engine: Around the Drum)

SC400-01

D

Development Gamma High Error (K)

SC400-02

D

Development Gamma High Error (C)

SC400-03

D

Development Gamma High Error (M)

SC400-04

D

Development Gamma High Error (Y)

SC400-04

D

Development Gamma High Error (S)

Development gamma > 3.0

Details:

This SC is issued when the development gamma measured during process control was greater than 3.0

• Toner density too high

• Condensation

• Replace the developer.

• If condensation has formed, wait a while and repeat process control.

SC401-01

D

Development Gamma Low Error (K)

SC401-02

D

Development Gamma Low Error (C)

SC401-03

D

Development Gamma Low Error (M)

SC401-04

D

Development Gamma Low Error (Y)

SC401-05

D

Development Gamma Low Error (S)

Development gamma > 0.3

Details:

This SC is issued when the development gamma measured during process control was smaller than 0.3

• Toner density error

• The dustproof glass is dirty.

• Image Transfer Power Pack defective

• PCDU set error

• Check the toner supply system.

• Clean the dust shield glass.

• Replace the Image Transfer Power Pack.

SC402-51

D

Development gamma calculation error: Insufficient data (K)

SC402-52

D

Development gamma calculation error: Insufficient data (C)

SC402-53

D

Development gamma calculation error: Insufficient data (M)

SC402-54

D

Development gamma calculation error: Insufficient data (Y)

SC402-55

D

Development gamma calculation error: Insufficient data (S)

The number of valid data that can be used for development gamma calculation is smaller than 2.

• Toner density error

• Condensation

• Replace the developer.

• If condensation has formed, wait a while and repeat process control.

SC402-61

D

Development gamma calculation error: LD unlit (K)

SC402-62

D

Development gamma calculation error: LD unlit (C)

SC402-63

D

Development gamma calculation error: LD unlit (M)

SC402-64

D

Development gamma calculation error: LD unlit (Y)

SC402-65

D

Development gamma calculation error: LD unlit (S)

Unable to draw gradation pattern

Details:

This SC is issued when the potential sensor fails to detect the gradation pattern created during process control.

LD unlit

Check the LD system and electric components.

SC403-01

C

Development Start Voltage (Vk) High Error (K)

SC403-02

C

Development Start Voltage (Vk) High Error (C)

SC403-03

C

Development Start Voltage (Vk) High Error (M)

SC403-04

C

Development Start Voltage (Vk) High Error (Y)

SC403-05

C

Development Start Voltage (Vk) High Error (S)

Development Start Voltage (Vk) > 300 [-V]

Details:

This SC is issued when the development start voltage measured during process control exceeded 300[-V].

• Toner density error

• Replace the developer.

SC404-01

C

Development Start Voltage (Vk) Low Error (K)

SC404-02

C

Development Start Voltage (Vk) Low Error (C)

SC404-03

C

Development Start Voltage (Vk) Low Error (M)

SC404-04

C

Development Start Voltage (Vk) Low Error (Y)

SC404-05

C

Development Start Voltage (Vk) Low Error (S)

Development Start Voltage (Vk) < 300 [-V]

Details:

This SC is issued when the development start voltage measured during process control was smaller than 300[-V].

• Toner density error

• Condensation

• Replace the developer.

• If condensation has formed, wait a while and repeat process control.

SC410-01

C

Potential sensor (Vr) Detection Error (K)

SC410-02

C

Potential sensor (Vr) Detection Error (C)

SC410-03

C

Potential sensor (Vr) Detection Error (M)

SC410-04

C

Potential sensor (Vr) Detection Error (Y)

SC410-05

C

Potential sensor (Vr) Detection Error (S)

Residual Voltage (Vr) > 200[-V]

Details:

This SC is issued when the residual voltage measured during process control exceeded 200 [-V].

• OPC drum deteriorated.

• Replace the OPC drum.

SC411-01

C

Potential sensor (Vd) Adjustment Error (K)

SC411-02

C

Potential sensor (Vd) Adjustment Error (C)

SC411-03

C

Potential sensor (Vd) Adjustment Error (M)

SC411-04

C

Potential sensor (Vd) Adjustment Error (Y)

SC411-05

C

Potential sensor (Vd) Adjustment Error (S)

Failed to adjust the DC charge bias to the target range: Vd*± 8V.

Details:

This SC is issued when the machine fails to adjust the DC charge bias to the target range: Vd*± 8V during process control.

• Charge roller dirty

• Replace the charge roller.

SC412-01

C

Potential sensor (Vpl) Adjustment Error (K)

SC412-02

C

Potential sensor (Vpl) Adjustment Error (C)

SC412-03

C

Potential sensor (Vpl) Adjustment Error (M)

SC412-04

C

Potential sensor (Vpl) Adjustment Error (Y)

SC412-05

C

Potential sensor (Vpl) Adjustment Error (S)

Failed to adjust the LD power to the target range: Vpl*± 5V.

Details:

This SC is issued when the machine fails to adjust the LD power to the target range: Vpl*± 5V during process control.

• OPC drum deteriorated (Filming etc.)

• Charge roller dirty

• Replace the OPC drum.

• Replace the charge roller.

SC421-01

C

OPC home position signal detection error (K)

SC421-02

C

OPC home position signal detection error (C)

SC421-03

C

OPC home position signal detection error (M)

SC421-04

C

OPC home position signal detection error (Y)

SC421-05

C

OPC 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 drum motor rotating.

• Home position sensor defective/Loose connection/Harness broken/Connecter disconnected

• Home position sensor smudged

• Check the Drum Motor HP Sensor connector.

• Check the Drum Motor HP Sensor harness.

• Replace the Drum Motor HP Sensor if it is found to be defective.

• Check the sensor for smudges. Blow it with air and check again.

SC441-**

D

ITB Drive Motor Error

*see the table below.

Error when Low is not detected in the LOCK signal 10 times in a row during the time from 1000ms elapsing after ITB driver motor startup and input of the motor stop signal.

• Motor rotation error due to abnormal increase in ITB unit torque and change in load

• Rotation error due to slip between ITB and drive roller

• Motor connector unplugged

• Motor driver defective

• ITB Drive Motor defective

Refer to SC441: ITB Drive Motor Error Measure Flow

01

Encoder 0: no pulse

-

02

Encoder 0: pulse lack

-

03

Encoder 0: chattering

-

05

-

Encoder 1: no pulse

06

Encoder 0: no pulse

Encoder 1: no pulse

07

Encoder 0: pulse lack

Encoder 1: no pulse

08

Encoder 0: chattering

Encoder 1: no pulse

10

-

Encoder 1: pulse lack

11

Encoder 0: no pulse

Encoder 1: pulse lack

12

Encoder 0: no pulse

Encoder 1: pulse lack

13

Encoder 0: chattering

Encoder 1: pulse lack

15

-

Encoder 1: chattering

16

Encoder 0: no pulse

Encoder 1: chattering

17

Encoder 0 pulse lack

Encoder 1: chattering

18

Encoder 0: chattering

Encoder 1: chattering

51

Accumulation speed error

52

Consecutive load error

SC442-01

D

Image Transfer (K) Contact error

SC442-02

D

Image Transfer (YMC) Contact error

SC442-03

D

Image Transfer (S) Contact error

Even though the ITB Contact Motor rotates, the Image Transfer Contact Sensor failed to detect the specified sensor feeler status within specified time.

• Image Transfer Contact Sensor dirty

• ITB Contact Motor/ Image Transfer Contact Sensor defective

• Harness damaged, disconnected

• Clean the parts.

• Replace the ITB Contact Motor/ Image Transfer Contact Sensor.

• Reconnect the harness.

SC443-01

C

Image transfer roller end-of-life (K)

SC443-02

C

Image transfer roller end-of-life (C)

SC443-03

C

Image transfer roller end-of-life (M)

SC443-04

C

Image transfer roller end-of-life (Y)

SC443-05

C

Image transfer roller end-of-life (S)

Resistance level of the image transfer roller was "R+3" during image transfer voltage detection.

• Image transfer roller resistance increased through time (Roller end-of-life)

• Connection fault between the image transfer power pack and the image transfer roller (High voltage harness broken, connector disconnected, or contact failure of image transfer roller bushes, etc.)

• Image transfer power pack defective

• Replace the image transfer roller

• Reconnect or replace the high voltage harness or the unit.

• Fix or replace the image transfer power pack.

SC444-00

D

Image transfer (K) set error

The image transfer contact sensor (K) detected “feeler present (separation)” before HP actuation of image transfer contact (K).

• Lever not installed

• Image Transfer Contact Sensor (K) smudged

• Image Transfer Contact Sensor (K) defective

• Harness broken

• Connection fault

• Put in contact after installing lever

• If smudged: cleaning

• If defective or broken: replacement

• Problem with connection: reconnection

SC450-01

D

ITB Power Pack error (leak): DC

SC450-02

D

ITB Power Pack error (leak): AC

An interrupt checks the status of the power pack every 10 ms. This SC is issued if a problem exists with 50 consecutive samplings (500 ms).

• Paper Transfer Power Pack (AC/DC) output current is leaking.

Remove the high voltage cable from the output terminal of the Paper Transfer Power Pack (AC/DC) and check the following items.

• PWM signal check

  If signal is fixed during image transfer, replace the cable or the IOB.

• ITB power pack output check (SP2-312-007)

  If 11.8kV or greater: increased resistance due to Paper Transfer Bias Roller life

  • Replace the Paper Transfer Bias Roller.

  If less than 11.8kV: leak due to debris around the paper transfer or poor harness connection or PP failure.

  • Inspect and clean around the PTR

  • Inspect and reconnect the harness

  • Replace the Paper Transfer Power Pack (AC/DC)

  If output is fixed during image transfer, replace Paper Transfer Power Pack (AC/DC).

  If output is normal during image transfer, replace the high voltage cable, ITB or the transfer roller.

SC450-11

D

Paper Transfer Power Pack (AC/DC) Error (low output)

The ITB roller resistance level was "R-3" (detected voltage was lower than 0.1kV).

• Paper Transfer Power Pack (AC/DC) defective

• Problem with input harness to the Paper Transfer Power Pack (AC/DC) (loose connection, harness broken, or connector disconnected).

• Fix or replace the Paper Transfer Power Pack (AC/DC).

• Check the input harness and connector of the Paper Transfer Power Pack (AC/DC).

SC451-**

D

PTR/ITB Cleaning Motor Error

* see the table below.

• Connector unplugged of PTR/ITB Cleaning Motor.

• Abnormal increase in paper transfer unit torque (such as overload due to bearing lock)

• Motor driver defective

• PTR/ITB Cleaning Motor defective

• Reconnect the motor connector

• Remove the cause of overloading inside the paper transfer unit

• Replace the motor driver

• Replace the PTR/ITB Cleaning Motor.

01

Encoder 0: no pulse

-

02

Encoder 0: pulse lack

-

03

Encoder 0: chattering

-

05

-

Encoder 1: no pulse

06

Encoder 0: no pulse

Encoder 1: no pulse

07

Encoder 0: pulse lack

Encoder 1: no pulse

08

Encoder 0: chattering

Encoder 1: no pulse

10

-

Encoder 1: pulse lack

11

Encoder 0: no pulse

Encoder 1: pulse lack

12

Encoder 0: no pulse

Encoder 1: pulse lack

13

Encoder 0: chattering

Encoder 1: pulse lack

15

-

Encoder 1: chattering

16

Encoder 0: no pulse

Encoder 1: chattering

17

Encoder 0 pulse lack

Encoder 1: chattering

18

Encoder 0: chattering

Encoder 1: chattering

41

Hole error

51

Accumulation speed error

52

Consecutive load error

SC452-00

D

PTR Lift Error

Even though the PTR lift motor rotates, the PTR lift sensor failed to detect the specified sensor feeler status within specified time.

Details:

• During home-positioning (operation for fixing the separated status) (separation movement)

  The sensor failed to detect the transition from “feeler present” to “feeler absent” (separation) within 2000 msec from the start of PTR lift motor rotation.

• During normal contact/separation movement (printing/process control/MUSIC/forced toner consumption)

  Contact movement:

  The sensor failed to detect the transition from “feeler absent” to “feeler present” (contact) within 2000 msec from the start of PTR lift motor rotation.

  Separation movement:

  The sensor failed to detect the transition from “feeler present” to “feeler absent” (separation) within 2000 msec from the start of PTR lift motor rotation.

• During contact/separation movement under special conditions (paper jam, paper end etc.)

  Separation movement:

  The sensor failed to detect the transition from “feeler present” to “feeler absent” (separation) within 2000 msec from the start of PTR lift motor rotation.

Detection timing: During contact/separation movement

Detection interval: 10msec or less

• PTR Separation Sensor smudged

• PTR Separation Motor/sensor defective

• Harness broken or problem with connection (such as a disconnected connector)

• If smudged: cleaning

• If defective or broken: replacement

• Problem with connection: reconnection

SC453-00

C

Paper Transfer Roller end-of-life

The paper transfer roller resistance level was "R+3".

• Paper transfer roller resistance increased through time (Roller end-of-life)

• Connection fault between the Paper Transfer Power Pack (AC/DC) and the paper transfer roller (High voltage harness broken, connector disconnected, or contact failure of paper transfer roller bushes, etc.)

• Paper Transfer Power Pack (AC/DC) defective

• Replace the paper transfer roller.

• Reconnect or replace the high voltage harness or the unit.

• Fix or replace the Paper Transfer Power Pack (AC/DC).

SC460-00

D

Separation Power Pack Error (Leak)

An interrupt checks the status of the power pack every 10 ms. This SC is issued if a problem exists with 50 consecutive samplings (500 ms).

Details:

SC issued when the separation power pack output current is leaking.

The IOB checks for SC signals as described above.

• Separation Power Pack AC output is leaking.

• If using normal paper is OK such as 70W, it may be because of the paper

  Try changing the paper

• Leak due to debris around the paper transfer or poor harness connection or separation power pack defective

  Inspect and clean around the paper transfer, inspect and reconnect the harness

  Replace the separation power pack

• Increased resistance due to Paper Transfer Bias Roller life

  Replace the Paper Transfer Bias Roller.

Remove the high voltage cable from the output terminal of the separation power pack and check the following items.

• PWM: D(ac)signal check

  If signal is fixed during image transfer, replace the cable or the IOB.

• Separation power pack output check

  If output is fixed during image transfer, replace the power pack.

  If output is normal during image transfer, replace the high voltage cable or the discharge plate.

SC471-00

D

Belt position ready timeout

When the belt position is initialized, the meandering of the intermediate transfer belt is not ready after 400s elapses from the start of belt startup.

• Belt Centering Sensor error

• Steering control mechanism fault

• Replace the Belt Centering Sensor

• Clear the steering control mechanism fault

• Re-set the intermediate transfer belt

SC472-00

D

Steering control homing error

During homing operation:

• With the initial photo sensor ON, the belt centering motor is driven the prescribed number of pulses in direction CW, but it fails to change to OFF.

• With the initial photo sensor ON, the belt centering motor is driven the prescribed number of pulses in direction CCW, but it fails to change to ON.

• Belt Centering Motor error

• Belt Centering Roller HP Sensor error

• Replace the Belt Centering Motor.

• Replace the Belt Centering Roller HP Sensor.

SC474-00

D

ITB Position Error 1

SC474-01

D

ITB Position Error 2

SC474-02

D

ITB Position Error 3

SC474-00

• The absolute value is 800 um or greater after the belt position moving average process.

• This SC is not applied during belt position initialization and during power ON startup.

SC474-01

• Front overrun sensor is detected ON 10 times in a row at 10 ms intervals.

SC474-02

• Rear overrun sensor is detected ON 10 times in a row at 10 ms intervals.

SC474-00

• Belt Centering Sensor error

• Steering control mechanism fault

SC474-01

• Initial belt position setting error

• Belt Centering Sensor error

• Front Overrun Sensor error

• Steering control mechanism fault

SC474-02

• Initial belt position setting error

• Belt Centering Sensor error

• Rear Overrun Sensor error

• Steering control mechanism fault

SC474-00

• Clean or replace the belt centering sensor

• Clear the steering control mechanism fault

• Re-set the belt

SC474-01

• Re-set the belt

• Replace the Front Overrun Sensor

SC474-02

• Re-set the belt

• Replace the rear overrun sensor

SC477-00

D

Belt Centering Sensor Error

SC477-01

D

Intermediate transfer belt positioning light adjustment error

SC477-00

• Belt centering sensor detects state C

SC477-01

• The belt centering sensor voltage is 1V or less and the PWM value of output voltage VL is MAX (80%) for 62 samplings in a row.

SC477-00

• Belt Centering Sensor error

SC477-01

• Belt Centering Sensor error

• Belt Centering Sensor dirty.

SC477-00

• Replace the Belt Centering Sensor.

SC477-01

• Clean/Replace the Belt Centering Sensor.

• Initialize belt centering sensor PWM value

SC480-00

D

Drum cleaning motor: Bk: 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): 0x57_0x08

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.

SC480-01

D

Drum Cleaning Motor Error (K)

SC480-02

D

Drum Cleaning Motor Error (C)

SC480-03

D

Drum Cleaning Motor Error (M)

SC480-04

D

Drum Cleaning Motor Error (Y)

SC480-05

D

Drum Cleaning Motor Error (S)

• Drum Cleaning Motor connector disconnected

• Abnormal increase in drum cleaning unit torque (such as overload due to bearing lock).

• Motor driver failure

• Reconnect the drum cleaning motor connector

• Remove the cause of overload inside the drum cleaning unit

• Replace the Drum Cleaning Motor.

SC485-00

D

Main Unit Used Toner Motor Lock

• Motor connector disconnected

• Abnormal increase in waste toner unit torque (overload due to toner clogged in the waste toner circuit or bearing lock)

• Motor driver defective

• Reconnect the main unit used toner motor connector

• Remove the cause of overload inside the waste toner unit

• Replace the Main Unit Used Toner Motor.

SC486-00

D

Used Toner Transport Motor Error

Signals sent from the lock detection sensor were either ON or OFF 50 times consecutively.

1. Overload or lock of waste toner bottle agitation paddle

2. Overload or lock of primary storage transport screw or paddle

3. Waste toner collection drive defective

4. Used Toner Transport Motor defective

5. Bottle Waste Toner Lock Detection smudged or defective

6. Bottle Waste Toner Lock Detection connector disconnected or harness broken

7. Used Toner Transport Motor connector disconnected or harness broken

8. IOB defective

1. Replace waste toner bottle

2. Clean with air, replace parts

3. Check harness connection, replace harness

4. Remove toner, clean bearings, replace defective parts

5. Replace defective parts

6. Replace IOB.

SC488-00

D

Machine Waste Toner Lock Detection Error

The IOB detects the signal frequency of the unit's waste toner and the engine software samples it at a frequency of 200ms. SC lights if the waste toner lock detection is abnormal 10 times in a row.

• Physical obstruction is blocking waste toner transport path

• Machine waste toner motor defective

• Used Toner Transport Motor Sensor defective

• Harness broken

• Connection fault

• Physical obstruction is blocking waste toner transport path: Replace or clean the waste toner transport section.

• Used Toner Transport Motor Sensor defective or harness broken: Replace parts.

• Connection fault: Reconnect it.

SC496-**

C

MUSIC Sensor Error

SC is issued if any of the following abnormalities occur.

• Number of patches abnormal

  -11: front, -12: center, -13: rear

• ITB scratched

  -21: front, -22: center, -23: rear, -30: others

• Main scan registration abnormal

  -51: C, -52: M, -53: Y, -54: S

• Sub scan registration abnormal

  -41: C, -42: M, -43: Y, -44: S

• Main scan magnification abnormal

  -61: C, -62: M, -63: Y, -64: S

• Main scan magnification error diffusion abnormal

  -71: C, -72: M, -73: Y, -74: S

• Skew error

  -81: C, -82: M, -83: Y, -84: S

• Pattern density abnormal

• ITB scratched or smudged

• TM sensor smudged or defective.

• Skew Motor defective

1. Check the image density (Execute Density Adjustment with SP3-011-002)

   Especially if -11/-12/-13

2. Check the intermediate transfer belt (cleaning/replacement)

   Especially if -21/-22/-23/-30

3. Check the TM/ID sensor(cleaning/replacement)

4. Replace the Laser Unit

   *If -41 or after, execute 1, 2, 3

SC497-00

C

Temperature/Humidity Sensor Error (PCU)

One of the following occurred.

• The temperature sensor output was less than 0.5V or more than 2.8V for three seconds (one second x 3), indicating a problem with the temperature sensor.

• The humidity sensor output was more than 2.4V for three seconds (one second x 3), indicating a problem with the humidity sensor.

Details:

Detection is repeated after power off/on.

If either of temperature/humidity sensors works correctly, the working sensor will be used even after the SC is issued.

The machine continues working with the assumption that the temperature is 23 degrees centigrade (if there is a problem with the temperature sensor) and/or the humidity is 50% (if there is a problem with the humidity sensor).

• Connector disconnected or harness broken

• PCU Temperature/Humidity Sensor defective

• Connector disconnected or harness broken: Revert connection.

• PCU Temperature/Humidity Sensor defective: Replace the sensor.

SC498-00

C

Temperature/Humidity Sensor Error (Main)

One of the following occurred.

• The temperature sensor output was less than 0.5V or more than 2.8V for three seconds (one second x 3), indicating a problem with the temperature sensor.

• The humidity sensor output was more than 2.4V for three seconds (one second x 3), indicating a problem with the humidity sensor.

Details:

Detection is repeated after power off/on.

If either of temperature/humidity sensors works correctly, the working sensor will be used even after the SC is issued.

The machine continues working with the assumption that the temperature is 23 degrees centigrade (if there is a problem with the temperature sensor) and/or the humidity is 50% (if there is a problem with the humidity sensor)

• Connector disconnected or harness broken

• ITB Temperature/Humidity

• Sensor defective

• Connector disconnected or harness broken: Revert connection.

• ITB Temperature/Humidity Sensor defective: Replace the sensor.

SC499-03

C

Intermediate transfer control error: Other than during light adjustment

SC499-40

C

Intermediate transfer control error: during light adjustment

If intermediate transfer FB control error issued from TDCU

• Belt scale dirty

• Transfer Belt Speed Feedback Sensor dirty.

• Transfer Belt Speed Feedback Sensor defective

• Connector disconnected or harness broken

• TDCU defective

• Clean the belt scale

• Clean the Transfer Belt Speed Feedback Sensor.

• Restore the connection.

• Replace the TDCU.

For details about troubleshooting of SC499, Refer to Recovering SC499-03, Preventive Maintenance of Intermediate Transfer Scale