SC3xx: Image Processing

SC312-01

D

Charge roller feed back voltage error: Bk

SC312-02

D

Charge roller feed back voltage error: Cy

SC312-03

D

Charge roller feed back voltage error: Ma

SC312-04

D

Charge roller feed back voltage error: Ye

The feedback voltage of the charge AC for each color is 0.15V or less for consecutive 200ms after the charge AC is activated in the standard or half line speed.

• Disconnected/incorrect harness for the power pack
• Damaged/incorrect PCU
• Power pack failure
• Disconnected harness/connector

Troubleshooting procedure:

1. Check the drum condition:
   Check the terminal to see if there is dust, damage, or deformation. Check the continuity as well.
   If not good, replace the PCDU. If the SC reoccurs, go to the next step.
2. Check all the related connectors are firmly connected:
   If not good, reconnect the connector. Check if the SC reoccurs by cycling the power off/on. If the SC reoccurs, go to the next step.
3. Check the mainframe condition:
   Check if there is dust on the terminal for charging, or any damage/deformation. Check the continuity between the power packs and charging terminal.
   If the SC reoccurs, go to the next step.
4. Check the power pack:
   Try installing a new power pack to determine whether the power pack is the cause. If the SC does not occur with the new one, the old power pack was defective.
5. Replace the BiCU.

SC325-00

D

Development motor (CMY) error

The motor LOCK signal is detected for more than 2 seconds while the motor START signal is ON.

• PCDU overload
• Defective the motor

• Replace the PCDU.
• Replace the development motor (CMY).

SC325-01

D

Development motor (CMY) error (When motor is deactivated)

The motor LOCK signal is not detected for more than 2 seconds while the motor START signal is OFF.

• Defective development motor (CMY)
• Disconnected harness for the motor
• Defective BiCU

• Replace the development motor (CMY).
• Replace the harness for the development motor (CMY).
• Replace the BiCU.

SC396-00

D

Drum motor (K) error

SC397-00

D

Drum motor (CMY) error

The motor LOCK signal is detected for more than 2 seconds while the motor START signal is ON.

• PCDU overload
• Drum motor (K) failure (SC396)
• Drum motor (CMY) failure (SC397)

• Replace the PCDU.
• Replace the drum motor (K) (SC396)
• Replace the drum motor (CMY) (SC397)

SC396-01

D

Drum motor (K) error (When motor is deactivated)

SC397-01

D

Drum motor (CMY) error (When motor is deactivated)

The motor LOCK signal is not detected for more than 2 seconds while the motor START signal is OFF.

• Drum motor (K) failure (SC396)
• Drum motor (CMY) failure (SC397)
• Disconnected harness for the drum motor
• Defective BiCU
• PCDU torque increased

• Replace the drum motor (K) (SC396)
• Replace the drum motor (CMY) (SC397)
• Reconnect the connector for the drum motor.
• Replace the harness for the drum motor.
• Replace the BiCU.
• Replace the PCDU.

SC360-01

D

TD sensor (Vt high) error 1: Bk

SC360-02

D

TD sensor (Vt high) error 1: Cy

SC360-03

D

TD sensor (Vt high) error 1: Ma

SC360-04

D

TD sensor (Vt high) error 1: Ye

• count is higher than the threshold which detects no developer
• count is lower than the upper/lower target thresholds three consecutive times.

• TD sensor (mu sensor, sensor) failure
• Harness loose or disconnected
• An old PCDU may be installed

Troubleshooting procedure:

1. Check all the related connecters are connected.
   If not good, reconnect the connectors. Check if the SC reoccurs by cycling the power off/on. If the SC reoccurs, go to next step.
2. Check the development unit (e.g. Gear/harness disconnected? Heat protection seal removed? Using an old PCDU?).
   If not good, replace the development unit. If the SC reoccurs, go to the next step.
3. Check whether the TD sensor is deformed, scratched, damaged or has dust sticking to it.
   If not good, replace the PCDU. If the SC reoccurs, go to the next step.
4. Check the TD sensor harnesses, and the harness between the mainframe and PCDU.
   If not good, replace the harness. If the SC reoccurs, go to the next step.
5. Replace the BiCU.

SC361-01

D

TD sensor (Vt) upper limit error: Bk

SC361-02

D

TD sensor (Vt) upper limit error 1: Cy

SC361-03

D

TD sensor (Vt) upper limit error 1: Ma

SC361-04

D

TD sensor (Vt) upper limit error 1: Ye

The machine detects that Vt (TD sensor output, SP3-210-001) is higher than the upper limit threshold for the specified consecutive times.

• TD sensor connector is disconnected

To check if the issue is resolved:

1. Cycle the power off/on.
2. Feed one sheet of paper.
3. Check Vt with SP3-210-001 through -004.
4. Check if Vt is higher than the upper threshold (specified in SP3-211-002).
   Incorrect: Vt is higher than the upper threshold
   Correct: Vt is equal to or lower than the upper threshold

Troubleshooting procedure:

1. Check all the connectors are firmly connected.
   If not, reconnect the connectors. Check if the SC reoccurs by cycling the power off/on. If the SC reoccurs, go to the next step.
2. Check the development unit (e.g. Gear/harness disconnected? Heat protection seal removed? Using an old PCDU?).
   If not good, replace the PCDU. If the SC reoccurs, go to the next step.
3. Check the TD sensor.
   If not good, replace the TD sensor. If the SC reoccurs, go to the next step.
4. Check the parameters (e.g. SP3-030-061 through -064 should be changed from its initial value, but could be not changed due to possible NVRAM clearing).
   If not good, replace the PCDU and initialize the developer. This corrects the TD sensor settings.
5. Check the toner supply unit, especially if the image density is too low.
   If the toner bottle is empty, the toner supply route is clogged, and/or the toner supply motor operates incorrectly, then correct the problem. If the SC reoccurs, go to the next step.
6. Check the harness connection.
   If not good, replace the harness between BiCU and PCDU.
7. Replace the BiCU.

SC362-01

D

TD sensor (Vt) lower limit error: Bk

SC362-02

D

TD sensor (Vt) lower limit error 1: Cy

SC362-03

D

TD sensor (Vt) lower limit error 1: Ma

SC362-04

D

TD sensor (Vt) lower limit error 1: Ye

The value of Vt (SP3-210-003) is lower than the threshold for times specified.

• TD sensor connector is disconnected.

• Check the connection of the TD sensor connector.
• Check if the TD sensor harness is connected firmly.
• Replace the TD sensor if any abnormality is found.

SC370-00

D

ID sensor calibration error

The reflection light output voltage of the ID sensor (Vsg_reg) is not adjusted within the target range.

Upper limit: Default: 4.5 V
Lower limit: Default: 3.5 V

• Disconnected ID sensor connectors
• Dirty or defective ID sensor
• Defective image transfer belt

To check if the issue is resolved:

• Do Vsg adjustment (SP3-320).
• Check the result in SP3-323-001.
  Correct: The result is “1”
  Incorrect: The result is not “1”

Troubleshooting procedure:

1. Check all the connectors are firmly connected.
   If not, reconnect the connectors. Check if the SC reoccurs by cycling the power off/on. If the SC reoccurs, go to the next step.

2. Clean the detecting part of the ID sensor

   

   • Do not wipe with a dry cloth.

   If the SC reoccurs, go to the next step.

3. Check the ID sensor shutter.
   If the shutter does not move correctly, replace the shutter solenoid. If the SC reoccurs, go to the next step.
4. Replace the drum and/or ITB if the following is found:
   Scratches, toner filming, wavy belt, or insufficient cleaning
5. Replace the ID sensor.
   If the SC reoccurs, go to the next step.
6. Check and connect the related harness if it is disconnected.
7. Replace the BiCU.