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Главная › Товары › Ошибки Kyocera ECOSYS M6526cidn
Ошибки Kyocera ECOSYS M6526cidn
  • Code: 0030
  • Description: FAX control PWB system error
    Processing with the fax software was disabled due to a hardware problem.
  • Causes: Defective FAX control PWB.
  • Remedy: Defective FAX control PWB. Replace the fax control PWB and check for correct operation..
  • Code: 0070
  • Description: FAX control PWB incompatible detection error
    Abnormal detection of FAX control PWB incompatibility In the initial communication with the FAX control PWB, any normal communication command is not transmitted.
  • Causes: Defective FAX software.PWB. Defective FAX control PWB.
  • Remedy: Defective FAX software. Install the fax software.
    Defective FAX control PWB. Replace the fax control PWB and check for correct operation..
  • Code: 0100
  • Description: Backup memory device error
  • Causes: Defective flash memory. Defective main PWB.
  • Remedy: Defective flash memory. Replace the main PWB and check for correct operation.
    Defective main PWB. Replace the main PWB and check for correct operation.
  • Code: 0120
  • Description: MAC address data error
    For data in which the MAC address is invalid.
  • Causes: Defective flash memory. Defective engine PWB.
  • Remedy: Defective flash memory. Replace the main PWB and check for correct operation.
    Defective engine PWB. Replace the engine PWB and check for correct operation.
  • Code: 0130
  • Description: Backup memory read/write error (main PWB)
  • Causes: Defective flash memory. Defective main PWB.
  • Remedy: Defective flash memory. Replace the main PWB and check for correct operation.
    Defective main PWB. Replace the main PWB and check for correct operation.
  • Code: 0140
  • Description: Backup memory data error (main PWB)
  • Causes: Defective flash memory. Defective main PWB.
  • Remedy: Defective flash memory. Replace the main PWB and check for correct operation.
    Defective main PWB. Replace the main PWB and check for correct operation.
  • Code: 0150
  • Description: Engine PWB EEPROM error
    Detecting engine PWB EEPROM communication error.
  • Causes: Improper installation engine PWB EEPROM. Defective engine PWB. Device damage of EEPROM.
  • Remedy: Improper installation engine PWB EEPROM. Check the installation of the EEPROM and remedy if necessary.
    Defective engine PWB. Replace the engine PWB and check for correct operation.
    Device damage of EEPROM. Contact the Service Administrative Division.
  • Code: 0170
  • Description: Billing counting error
    A checksum error is detected in the main and engine backup memories for the billing counters.
  • Causes: Data damage of EEPROM. Defective PWB.
  • Remedy: Data damage of EEPROM. Contact the Service Administrative Division.
    Defective PWB. Replace the main PWB or the engine PWB and check for correct operation.
  • Code: 0180
  • Description: Machine number mismatch
    Machine number of main and engine does not match.
  • Causes: Data damage of EEPROM.
  • Remedy: Data damage of EEPROM. Contact the Service Administrative Division.
  • Code: 0600
  • Description: Expanded memory (DIMM) installing error
    The expansion memory modules (DIMM) are not correctly mounted.
  • Causes: Improper installation expanded memory (DIMM).
  • Remedy: Improper installation expanded memory (DIMM). Check the installation of the expanded memory (DIMM).
  • Code: 0610
  • Description: Expanded memory (DIMM) error
    The expansion memory modules (DIMM) mounted on the main PWB does not operate correctly.
  • Causes: Defective expanded memory (DIMM). Defective main PWB.
  • Remedy: Defective expanded memory (DIMM). Replace the expanded memory (DIMM) and check for correct operation.
    Defective main PWB. Replace the main PWB and check for correct operation.
  • Code: 0640
  • Description: Hard disk error
    The hard disk cannot be accessed.
  • Causes: Defective hard disk. Defective main PWB.
  • Remedy: Defective hard disk. Replace the hard disk and check for correct operation.
    Defective main PWB. Replace the main PWB and check for correct operation.
  • Code: 0830
  • Description: FAX control PWB flash program area checksum error
    A checksum error occurred with the program of the FAX control PWB.
  • Causes: Defective FAX software. Defective FAX control PWB.
  • Remedy: Defective FAX software. Install the fax software.
    Defective FAX control PWB. Replace the FAX control PWB.
  • Code: 0840
  • Description: Faults of RTC
    The time is judged to go back based on the comparison of the RTC time and the current time or five years or more have passed.
  • Causes: The battery is disconnected from the main PWB. Defective main PWB.
  • Remedy: The battery is disconnected from the main PWB. Check visually and remedy if necessary
    Defective main PWB. Replace the main PWB and check for correct operation.
  • Code: 0870
  • Description: FAX control PWB to main PWB high capacity data transfer error
    High-capacity data transfer between the FAX control PWB and the main PWB of the machine was not normally performed even if the data transfer was retried the specified times.
  • Causes: Improper installation FAX control PWB. Defective FAX control PWB or main PWB.
  • Remedy: Improper installation FAX control PWB. Reinstall the FAX control PWB.
    Defective FAX control PWB or main PWB. Replace the FAX control PWB or main PWB and check for correct operation.
  • Code: 0920
  • Description: Fax file system error
    The backup data is not retained for file system abnormality of flash memory of the FAX control PWB.
  • Causes: Defective FAX control PWB.
  • Remedy: Defective FAX control PWB. Replace the FAX control PWB and check for correct operation.
  • Code: 0930
  • Description: EEPROM bus error
  • Causes: Defective drum PWB (EEPROM). Defective engine PWB (EEPROM). Defective engine PWB. Defective main PWB.
  • Remedy: Defective drum PWB (EEPROM). Replace the drum unit.
    Defective engine PWB (EEPROM). Replace the engine PWB and check for correct operation.
    Defective engine PWB. Replace the engine PWB and check for correct operation.
    Defective main PWB. Replace the main PWB and check for correct operation.
  • Code: 1010
  • Description: Lift motor error
    When the lift motor is driven, the motor over-current detection signal is detected continuously for 50 times (5 s) at 100 ms intervals. After the lift motor is driven, the ON status of lift sensor cannot be detected for 8 s. The cassette installed confirmation message is displayed on the operation panel, and even if the cassette is opened and closed, the cassette installed confirmation message is displayed 5 times successively.
  • Causes: Defective bottom plate elevation mechanism in the cassette. Defective connector cable or poor contact in the connector. Defective drive transmission system of the lift motor. Defective lift motor. Defective engine PWB.
  • Remedy: Defective bottom plate elevation mechanism in the cassette. Check to see if the bottom plate can move smoothly and repair it if any problem is found.
    Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Lift motor and engine PWB (YC27)
    Defective drive transmission system of the lift motor. Check if the gears rotate smoothly. If not, grease the bushes and gears. Check for broken gears and replace if any.
    Defective lift motor. Replace the lift motor
    Defective engine PWB. Replace the engine PWB and check for correct operation.
  • Code: 1020
  • Description: PF lift motor error (paper feeder 1)
    When the lift motor is driven, the motor over-current detection signal is detected continuously for 50 times (5 s) at 100 ms intervals. After the lift motor is driven, the ON status of lift sensor cannot be detected for 8 s. The cassette installed confirmation message is displayed on the operation panel, and even if the cassette is opened and closed, the cassette installed confirmation message is displayed 5 times successively.
  • Causes: Defective bottom plate elevation mechanism in the cassette. Defective connector cable or poor contact in the connector. Defective drive transmission system of the PF lift motor. Defective PF lift motor. Defective PF main PWB.
  • Remedy: Defective bottom plate elevation mechanism in the cassette. Check to see if the bottom plate can move smoothly and repair it if any problem is found.
    Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. PF lift motor and PF main PWB (YC7)
    Defective drive transmission system of the PF lift motor. Check if the gears rotate smoothly. If not, grease the bushes and gears. Check for broken gears and replace if any.
    Defective PF lift motor. Replace the PF lift motor
    Defective PF main PWB. Replace the PF main PWB (Refer to the service manual for the paper feeder).
  • Code: 1030
  • Description: PF lift motor error (paper feeder 2)
    When the lift motor is driven, the motor over-current detection signal is detected continuously for 50 times (5 s) at 100 ms intervals. After the lift motor is driven, the ON status of lift sensor cannot be detected for 8 s. The cassette installed confirmation message is displayed on the operation panel, and even if the cassette is opened and closed, the cassette installed confirmation message is displayed 5 times successively.
  • Causes: Defective bottom plate elevation mechanism in the cassette. Defective connector cable or poor contact in the connector. Defective drive transmission system of the PF lift motor. Defective PF lift motor. Defective PF main PWB.
  • Remedy: Defective bottom plate elevation mechanism in the cassette. Check to see if the bottom plate can move smoothly and repair it if any problem is found.
    Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. PF lift motor and PF main PWB (YC7)
    Defective drive transmission system of the PF lift motor. Check if the gears rotate smoothly. If not, grease the bushes and gears. Check for broken gears and replace if any.
    Defective PF lift motor. Replace the PF lift motor
    Defective PF main PWB. Replace the PF main PWB (Refer to the service manual for the paper feeder).
  • Code: 1500
  • Description: PF heater 1 high temperature error (paper feeder 1)
    A temperature higher than 75C/167F is detected.
  • Causes: Defective connector cable or poor contact in the connector. Shorted PF thermistor 1. Defective PF fan motor 1. Defective PF main PWB.
  • Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. PF fan motor 1 and PF main PWB (YC111)
    Shorted PF thermistor 1. Replace the top heater unit (Refer to the service manual for the paper feeder).
    Defective PF fan motor 1. Replace the top heater unit (Refer to the service manual for the paper feeder).
    Defective PF main PWB. Replace the PF main PWB (Refer to the service manual for the paper feeder).
  • Code: 1510
  • Description: PF heater 2 high temperature error (paper feeder 1)
    A temperature higher than 75C/167F is detected.
  • Causes: Defective connector cable or poor contact in the connector. Shorted PF thermistor 2. Defective PF fan motor 2. Defective PF main PWB.
  • Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. PF fan motor 2 and PF main PWB (YC111)
    Shorted PF thermistor 2. Replace the side heater unit (Refer to the service manual for the paper feeder).
    Defective PF fan motor 2. Replace the side heater unit (Refer to the service manual for the paper feeder).
    Defective PF main PWB. Replace the PF main PWB (Refer to the service manual for the paper feeder).
  • Code: 1520
  • Description: PF heater 1 high temperature error (paper feeder 2)
    A temperature higher than 75aC/167F is detected.
  • Causes: Defective connector cable or poor contact in the connector. Shorted PF thermistor 1. Defective PF fan motor 1. Defective PF main PWB.
  • Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. PF fan motor 1 and PF main PWB (YC111)
    Shorted PF thermistor 1. Replace the top heater unit (Refer to the service manual for the paper feeder).
    Defective PF fan motor 1. Replace the top heater unit (Refer to the service manual for the paper feeder).
    Defective PF main PWB. Replace the PF main PWB (Refer to the service manual for the paper feeder).
  • Code: 1530
  • Description: PF heater 2 high temperature error (paper feeder 2)
    A temperature higher than 75C/167F is detected.
  • Causes: Defective connector cable or poor contact in the connector. Shorted PF thermistor 2. Defective PF fan motor 2. Defective PF main PWB.
  • Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. PF fan motor 2 and PF main PWB (YC111)
    Shorted PF thermistor 2. Replace the side heater unit (Refer to the service manual for the paper feeder).
    Defective PF fan motor 2. Replace the side heater unit (Refer to the service manual for the paper feeder).
    Defective PF main PWB. Replace the PF main PWB (Refer to the service manual for the paper feeder).
  • Code: 1600
  • Description: PF heater 1 low temperature error (paper feeder 1)
    An external temperature higher than + 5C/+ 9F is not detected when one minute elapses after PF heater 1 is turned on.
  • Causes: Defective connector cable or poor contact in the connector. PF thermistor 1 installed incorrectly. Defective PF thermistor 1. Broken PF heater 1. Defective PF heater PWB or PF main PWB.
  • Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. PF heater 1 and PF heater PWB (YC1) PF heater PWB (YC3) and PF main PWB (YC113) PF thermistor 1 and PF main PWB (YC114)
    PF thermistor 1 installed incorrectly. Check the installation of the PF thermistor 1.
    Defective PF thermistor 1. Replace the top heater unit (Refer to the service manual for the paper feeder).
    Broken PF heater 1. Replace the top heater unit (Refer to the service manual for the paper feeder).
    Defective PF heater PWB or PF main PWB. Replace the PF heater PWB or PF main PWB (Refer to the service manual for the paper feeder).
  • Code: 1610
  • Description: PF heater 2 low temperature error (paper feeder 1)
    An external temperature higher than + 5C/+ 9F is not detected when one minute elapses after PF heater 2 is turned on.
  • Causes: Defective connector cable or poor contact in the connector. PF thermistor 2 installed incorrectly. Defective PF thermistor 2. Broken PF heater 2. Defective PF heater PWB or PF main PWB.
  • Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. PF heater 2 and PF heater PWB (YC2) PF heater PWB (YC3) and PF main PWB (YC113) PF thermistor 2 and PF main PWB (YC115)
    PF thermistor 2 installed incorrectly. Check the installation of the PF thermistor 2.
    Defective PF thermistor 2. Replace the side heater unit (Refer to the service manual for the paper feeder).
    Broken PF heater 2. Replace the side heater unit (Refer to the service manual for the paper feeder).
    Defective PF heater PWB or PF main PWB. Replace the PF heater PWB or PF main PWB (Refer to the service manual for the paper feeder).
  • Code: 1620
  • Description: PF heater 1 low temperature error (paper feeder 2)
    An external temperature higher than + 5C/+ 9F is not detected when one minute elapses after PF heater 1 is turned on.
  • Causes: Defective connector cable or poor contact in the connector. PF thermistor 1 installed incorrectly. Defective PF thermistor 1. Broken PF heater 1. Defective PF heater PWB or PF main PWB.
  • Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. PF heater 1 and PF heater PWB (YC1) PF heater PWB (YC3) and PF main PWB (YC113) PF thermistor 1 and PF main PWB (YC114)
    PF thermistor 1 installed incorrectly. Check the installation of the PF thermistor 1.
    Defective PF thermistor 1. Replace the top heater unit (Refer to the service manual for the paper feeder).
    Broken PF heater 1. Replace the top heater unit (Refer to the service manual for the paper feeder).
    Defective PF heater PWB or PF main PWB. Replace the PF heater PWB or PF main PWB (Refer to the service manual for the paper feeder).
  • Code: 1630
  • Description: PF heater 2 low temperature error (paper feeder 2)
    An external temperature higher than + 5C/+ 9F is not detected when one minute elapses after PF heater 2 is turned on.
  • Causes: Defective connector cable or poor contact in the connector. PF thermistor 2 installed incorrectly. Defective PF thermistor 2. Broken PF heater 2. Defective PF heater PWB or PF main PWB.
  • Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. PF heater 2 and PF heater PWB (YC2) PF heater PWB (YC3) and PF main PWB (YC113) PF thermistor 2 and PF main PWB (YC115)
    PF thermistor 2 installed incorrectly. Check the installation of the PF thermistor 2.
    Defective PF thermistor 2. Replace the side heater unit (Refer to the service manual for the paper feeder).
    Broken PF heater 2. Replace the side heater unit (Refer to the service manual for the paper feeder).
    Defective PF heater PWB or PF main PWB. Replace the PF heater PWB or PF main PWB (Refer to the service manual for the paper feeder).
  • Code: 1800
  • Description: Paper feeder communication error
    Communication error between engine PWB and optional paper feeder.
  • Causes: Improper installation paper feeder. Defective connector cable or poor contact in the connector. Defective engine PWB. Defective PF main PWB.
  • Remedy: Improper installation paper feeder. Follow installation instruction carefully again.
    Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. PF main PWB (YC3) and engine PWB (YC33)
    Defective engine PWB. Replace the engine PWB and check for correct operation.
    Defective PF main PWB. Replace the PF main PWB (Refer to the service manual for the paper feeder).
  • Code: 2100
  • Description: Developing motor error
    The developing motor ready input is not given for 5 s during the main motor is ON.
  • Causes: Defective connector cable or poor contact in the connector. Defective drive transmission system of the developing motor. Defective developing motor. Defective engine PWB.
  • Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Developing motor and engine PWB (YC14)
    Defective drive transmission system of the developing motor. Check if the rollers and gears rotate smoothly. If not, grease the bushes and gears. Check for broken gears and replace if any.
    Defective developing motor. Replace the developing motor.
    Defective engine PWB. Replace the engine PWB and check for correct operation.
  • Code: 2200
  • Description: Drum motor error
    The drum motor ready input is not given for 5 s during the drum motor is ON.
  • Causes: Defective connector cable or poor contact in the connector. Defective drive transmission system of the drum motor. Defective drum motor. Defective engine PWB.
  • Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Drum motor and engine PWB (YC13)
    Defective drive transmission system of the drum motor. Check if the rollers and gears rotate smoothly. If not, grease the bushes and gears. Check for broken gears and replace if any.
    Defective drum motor. Replace the drum motor.
    Defective engine PWB. Replace the engine PWB and check for correct operation.
  • Code: 2330
  • Description: Fuser pressure release motor error
    When the fuser pressure release motor is driven, the motor over-current detection signal is detected continuously for 8 times (800 ms) at 100 ms intervals.
  • Causes: Defective connector cable or poor contact in the connector. Defective drive transmission system of the fuser pressure release motor. Defective fuser pressure release motor. Defective engine PWB.
  • Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Fuser pressure release motor and engine PWB (YC38)
    Defective drive transmission system of the fuser pressure release motor. Check if the rollers and gears rotate smoothly. If not, grease the bushes and gears. Check for broken gears and replace if any.
    Defective fuser pressure release motor. Replace the fuser pressure release motor.
    Defective engine PWB. Replace the engine PWB and check for correct operation.
  • Code: 2340
  • Description: Fuser pressure release motor time-out error
    When the fuser pressure release motor is driven, the envelope switch (EVSW) is not detectable for 6 s.
  • Causes: Defective connector cable or poor contact in the connector. Defective drive transmission system of the fuser pressure release motor. Defective fuser pressure release motor. Defective engine PWB.
  • Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Fuser pressure release motor and engine PWB (YC38)
    Defective drive transmission system of the fuser pressure release motor. Check if the rollers and gears rotate smoothly. If not, grease the bushes and gears. Check for broken gears and replace if any.
    Defective fuser pressure release motor. Replace the fuser pressure release motor.
    Defective engine PWB. Replace the engine PWB and check for correct operation.
  • Code: 2500
  • Description: Paper feed motor error
    The drum motor ready input is not given for 5 s during the paper feed motor is ON.
  • Causes: Defective connector cable or poor contact in the connector. Defective drive transmission system of the paper feed motor. Defective paper feed motor. Defective engine PWB.
  • Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Paper feed motor and engine PWB (YC3)
    Defective drive transmission system of the paper feed motor. Check if the rollers and gears rotate smoothly. If not, grease the bushes and gears. Check for broken gears and replace if any.
    Defective paper feed motor. Replace the paper feed motor.
    Defective engine PWB. Replace the engine PWB and check for correct operation.
  • Code: 2600
  • Description: PF paper feed motor error (paper feeder 1)
    The drum motor ready input is not given for 2 s during the PF paper feed motor is ON.
  • Causes: Defective connector cable or poor contact in the connector. Defective drive transmission system of the PF paper feed motor. Defective PF paper feed motor. Defective PF main PWB.
  • Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. PF paper feed motor and PF main PWB (YC6)
    Defective drive transmission system of the PF paper feed motor. Check if the rollers and gears rotate smoothly. If not, grease the bushes and gears. Check for broken gears and replace if any.
    Defective PF paper feed motor. Replace the PF paper feed motor.
    Defective PF main PWB. Replace the PF main PWB (Refer to the service manual for the paper feeder).
  • Code: 2610
  • Description: PF paper feed motor error (paper feeder 2)
    The drum motor ready input is not given for 2 s during the PF paper feed motor is ON.
  • Causes: Defective connector cable or poor contact in the connector. Defective drive transmission system of the PF paper feed motor. Defective PF paper feed motor. Defective PF main PWB.
  • Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. PF paper feed motor and PF main PWB (YC6)
    Defective drive transmission system of the PF paper feed motor. Check if the rollers and gears rotate smoothly. If not, grease the bushes and gears. Check for broken gears and replace if any.
    Defective PF paper feed motor. Replace the PF paper feed motor.
    Defective PF main PWB. Replace the PF main PWB (Refer to the service manual for the paper feeder).
  • Code: 2730
  • Description: Developing release motor error
    When the developing release motor is driven, the motor over-current detection signal is detected continuously for 8 times (800 ms) at 100 ms intervals.
  • Causes: Defective connector cable or poor contact in the connector. Defective drive transmission system of the developing release motor. Defective developing release motor. Defective engine PWB.
  • Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Developing release motor and engine PWB (YC35)
    Defective drive transmission system of the developing release motor. Check if the rollers and gears rotate smoothly. If not, grease the bushes and gears. Check for broken gears and replace if any.
    Defective developing release motor. Replace the developing release motor.
    Defective engine PWB. Replace the engine PWB and check for correct operation.
  • Code: 2740
  • Description: Developing release motor time-out error
    When the developing release motor is driven, the developing release switch (DEVRSW) is not detectable for 1 s.
  • Causes: Defective connector cable or poor contact in the connector. Defective drive transmission system of the developing release motor. Defective developing release motor. Defective engine PWB.
  • Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Developing release motor and engine PWB (YC35)
    Defective drive transmission system of the developing release motor. Check if the rollers and gears rotate smoothly. If not, grease the bushes and gears. Check for broken gears and replace if any.
    Defective developing release motor. Replace the developing release motor.
    Defective engine PWB. Replace the engine PWB and check for correct operation.
  • Code: 2820
  • Description: Fuser motor error
    The fuser motor ready input is not given for 5 s during the fuser motor is ON.
  • Causes: Defective connector cable or poor contact in the connector. Defective drive transmission system of the fuser motor. Defective fuser motor. Defective engine PWB.
  • Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Fuser motor and engine PWB (YC15)
    Defective drive transmission system of the fuser motor. Check if the rollers and gears rotate smoothly. If not, grease the bushes and gears. Check for broken gears and replace if any.
    Defective fuser motor. Replace the fuser motor.
    Defective engine PWB. Replace the engine PWB and check for correct operation.
  • Code: 3100
  • Description: ISU home position error
    The home position is not correct when the power is turned on or at the start of copying using the table.
  • Causes: Defective connector cable or poor contact in the connector. Defective home position sensor. Defective ISU motor. Defective CCD PWB. Defective main PWB.
  • Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Home position sensor and CCD PWB (YC3) CCD PWB (YC1) and main PWB (YC8) ISU motor and main PWB (YC36)
    Defective home position sensor. Replace the home position sensor.
    Defective ISU motor. Replace the ISU motor.
    Defective CCD PWB. Replace the scanner unit.
    Defective main PWB. Replace the main PWB and check for correct operation.
  • Code: 3200
  • Description: Exposure lamp error
    When input value at the time of exposure lamp illumination does not exceed the threshold value between 5 s.
  • Causes: Defective connector cable or poor contact in the connector. Defective exposure lamp. Defective inverter PWB or CCD PWB. Defective main PWB.
  • Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Exposure lamp and inverter PWB (CN2) Inverter PWB (CN1) and CCD PWB (YC3) CCD PWB (YC1) and main PWB (YC8)
    Defective exposure lamp. Replace the scanner unit.
    Defective inverter PWB or CCD PWB. Replace the scanner unit.
    Defective main PWB. Replace the main PWB and check for correct operation.
  • Code: 3300
  • Description: AGC error
    After AGC, correct input is not obtained at CCD.
  • Causes: Defective connector cable or poor contact in the connector. Defective exposure lamp. Defective inverter PWB or CCD PWB. Defective main PWB.
  • Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Inverter PWB (CN1) and CCD PWB (YC3) CCD PWB (YC1) and main PWB (YC8)
    Defective exposure lamp. Replace the scanner unit.
    Defective inverter PWB or CCD PWB. Replace the scanner unit.
    Defective main PWB. Replace the main PWB and check for correct operation.
  • Code: 3500
  • Description: Communication error between scanner and ASIC
    An error code is detected.
  • Causes: Defective connector cable or poor contact in the connector. Defective CCD PWB. Defective main PWB.
  • Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. CCD PWB (YC1) and main PWB (YC8)
    Defective CCD PWB. Replace the scanner unit.
    Defective main PWB. Replace the main PWB and check for correct operation.
  • Code: 4001
  • Description: Polygon motor KM error
    The polygon motor KM ready input is not given for 10 s during the polygon motor is ON.
  • Causes: Defective connector cable or poor contact in the connector. Defective polygon motor KM. Defective engine PWB.
  • Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Laser scanner unit KM and engine PWB (YC31)
    Defective polygon motor KM. Replace the laser scanner unit KM.
    Defective engine PWB. Replace the engine PWB and check for correct operation.
  • Code: 4002
  • Description: Polygon motor CY error
    The polygon motor CY ready input is not given for 10 s during the polygon motor is ON.
  • Causes: Defective connector cable or poor contact in the connector. Defective polygon motor CY. Defective engine PWB.
  • Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Laser scanner unit CY and engine PWB (YC31)
    Defective polygon motor CY. Replace the laser scanner unit CY.
    Defective engine PWB. Replace the engine PWB and check for correct operation.
  • Code: 4201
  • Description: Laser output error (black)
    The pin photo signal is not output from PD PWB K for one second while laser is emitted.
  • Causes: Defective connector cable or poor contact in the connector. Defective APC PWB K. Defective PD PWB K. Defective engine PWB.
  • Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. APC PWB K and engine PWB (YC31)
    Defective APC PWB K. Replace the laser scanner unit KM.
    Defective PD PWB K. Replace the laser scanner unit KM.
    Defective engine PWB. Replace the engine PWB and check for correct operation.
  • Code: 4202
  • Description: Laser output error (cyan)
    The pin photo signal is not output from PD PWB C for one second while laser is emitted.
  • Causes: Defective connector cable or poor contact in the connector. Defective APC PWB C. Defective PD PWB C. Defective engine PWB.
  • Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. APC PWB C and engine PWB (YC32)
    Defective APC PWB C. Replace the laser scanner unit CY.
    Defective PD PWB C. Replace the laser scanner unit CY.
    Defective engine PWB. Replace the engine PWB.
  • Code: 4203
  • Description: Laser output error (magenta)
    The pin photo signal is not output from PD PWB M for one second while laser is emitted.
  • Causes: Defective connector cable or poor contact in the connector. Defective APC PWB M. Defective PD PWB M. Defective engine PWB.
  • Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. APC PWB M and engine PWB (YC31)
    Defective APC PWB M. Replace the laser scanner unit KM.
    Defective PD PWB M. Replace the laser scanner unit KM.
    Defective engine PWB. Replace the engine PWB.
  • Code: 4204
  • Description: Laser output error (yellow)
    The pin photo signal is not output from PD PWB Y for one second while laser is emitted.
  • Causes: Defective connector cable or poor contact in the connector. Defective APC PWB Y. Defective PD PWB Y. Defective engine PWB.
  • Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. APC PWB Y and engine PWB (YC32)
    Defective APC PWB Y. Replace the laser scanner unit CY.
    Defective PD PWB Y. Replace the laser scanner unit CY.
    Defective engine PWB. Replace the engine PWB.
  • Code: 4600
  • Description: LSU cleaning motor error
    When the LSU cleaning motor is driven, the motor over-current detection signal is detected continuously for 50 times (5 s) at 100 ms intervals.
  • Causes: Defective connector cable or poor contact in the connector. Defective drive transmission system of the LSU cleaning motor. Defective LSU cleaning motor. Defective engine PWB.
  • Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. LSU cleaning motor and engine PWB (YC36)
    Defective drive transmission system of the LSU cleaning motor. Check if the rollers and gears rotate smoothly. If not, grease the bushes and gears. Check for broken gears and replace if any.
    Defective LSU cleaning motor. Replace the LSU cleaning motor.
    Defective engine PWB. Replace the engine PWB and check for correct operation.
  • Code: 4700
  • Description: VIDEO ASIC device error
  • Causes: Defective connector cable or poor contact in the connector. Defective main PWB or engine PWB.
  • Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Main PWB (YC39) and relay PWB (YC3) Relay PWB (YC2, 4) and engine PWB (YC8, 9)
    Defective main PWB or engine PWB. Replace the main PWB or the engine PWB and check for correct operation.
  • Code: 5301
  • Description: Broken cleaning lamp K wire
    When the cleaning lamp K is driven, the lamp over-current detection signal is detected continuously for 10 times (1 s) at 100 ms intervals.
  • Causes: Defective connector cable or poor contact in the connector. Defective cleaning lamp K. Defective engine PWB.
  • Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Drum unit K and Drum relay PWB (YC2) Drum relay PWB (YC1) and engine PWB (YC34)
    Defective cleaning lamp K. Replace the drum unit K..
    Defective engine PWB. Replace the engine PWB and check for correct operation.
  • Code: 5302
  • Description: Broken cleaning lamp C wire
    When the cleaning lamp C is driven, the lamp over-current detection signal is detected continuously for 10 times (1 s) at 100 ms intervals.
  • Causes: Defective connector cable or poor contact in the connector. Defective cleaning lamp C. Defective engine PWB.
  • Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Drum unit C and Drum relay PWB (YC4) Drum relay PWB (YC1) and engine PWB (YC34)
    Defective cleaning lamp C. Replace the drum unit C..
    Defective engine PWB. Replace the engine PWB and check for correct operation.
  • Code: 5303
  • Description: Broken cleaning lamp M wire
    When the cleaning lamp M is driven, the lamp over-current detection signal is detected continuously for 10 times (1 s) at 100 ms intervals.
  • Causes: Defective connector cable or poor contact in the connector. Defective cleaning lamp M. Defective engine PWB.
  • Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Drum unit M and Drum relay PWB (YC3) Drum relay PWB (YC1) and engine PWB (YC34)
    Defective cleaning lamp M. Replace the drum unit M..
    Defective engine PWB. Replace the engine PWB and check for correct operation.
  • Code: 5304
  • Description: Broken cleaning lamp Y wire
    When the cleaning lamp Y is driven, the lamp over-current detection signal is detected continuously for 10 times (1 s) at 100 ms intervals.
  • Causes: Defective connector cable or poor contact in the connector. Defective cleaning lamp Y. Defective engine PWB.
  • Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Drum unit Y and Drum relay PWB (YC5) Drum relay PWB (YC1) and engine PWB (YC34)
    Defective cleaning lamp Y. Replace the drum unit Y..
    Defective engine PWB. Replace the engine PWB and check for correct operation.
  • Code: 6000
  • Description: Broken fuser heater wire
    The detected temperature of fuser thermistor does not rise 1„aC/1.8„aF after the fuser heater has been turned on continuously for 10 s in warming up. The fuser temperature does not reach 100„aC/212„aF after the fuser heater has been turned on continuously for 30 s in warming up. The detected temperature of fuser thermistor does not reach the specified temperature (ready indication temperature) after the fuser heater has been turned on continuously for 60 s in warming up. The detected temperature of fuser thermistor does not rise 1„aC/1.8„aF after the fuser heater has been turned on continuously for 10 s during printing.
  • Causes: Defective connector cable or poor contact in the connector. Fuser thermostat triggered. Broken fuser heater wire. Defective engine PWB.
  • Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Fuser heater and power source PWB (YC102) Fuser unit and eject PWB (YC3) Eject PWB (YC1) and engine PWB (YC19)
    Fuser thermostat triggered. Reinsert the fuser unit.
    Broken fuser heater wire. Replace the fuser unit.
    Defective engine PWB. Replace the engine PWB and check for correct operation.
  • Code: 6020
  • Description: Abnormally high fuser thermistor temperature
    The fuser thermistor detects a temperature higher than 240C/464F. By the activation of the high temperature error detection circuit (230C/446F or more) of fuser thermistor, the illumination of fuser heater was forcibly turned off and 10 s has elapsed.
  • Causes: Shorted fuser thermistor. Defective engine PWB.
  • Remedy: Shorted fuser thermistor. Replace the fuser unit.
    Defective engine PWB. Replace the engine PWB and check for correct operation.
  • Code: 6030
  • Description: Broken fuser thermistor wire
    Input from fuser thermistor is 3 or less (A/D value) continuously for 1 s.
  • Causes: Defective connector cable or poor contact in the connector. Broken fuser thermistor wire. Fuser thermostat triggered. Broken fuser heater wire. Defective engine PWB.
  • Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Fuser unit and eject PWB (YC3) Eject PWB (YC1) and engine PWB (YC19)
    Broken fuser thermistor wire. Replace the fuser unit.
    Fuser thermostat triggered. Reinsert the fuser unit.
    Broken fuser heater wire. Replace the fuser unit.
    Defective engine PWB. Replace the engine PWB and check for correct operation.
  • Code: 6400
  • Description: Zero-cross signal error
    The zero-cross signal does not reach the engine PWB for more than 1 s.
  • Causes: Defective connector cable or poor contact in the connector. Defective power source PWB or engine PWB.
  • Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Power source PWB (YC103) and relay PWB (YC1) Relay PWB (YC4) and engine PWB (YC9)
    Defective power source PWB or engine PWB. Replace the power source PWB or the engine PWB and check for correct operation.
  • Code: 7001
  • Description: Toner motor K error
    When the toner motor K is driven, the motor over-current detection signal is detected continuously for 50 times (5 s) at 100 ms intervals.
  • Causes: Defective connector cable or poor contact in the connector. Defective drive transmission system of the toner motor K. Defective toner motor K. Defective engine PWB.
  • Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Toner motor K and engine PWB (YC23)
    Defective drive transmission system of the toner motor K. Check if the rollers and gears rotate smoothly. If not, grease the bushes and gears. Check for broken gears and replace if any.
    Defective toner motor K. Replace the toner motor K.
    Defective engine PWB. Replace the engine PWB and check for correct operation.
  • Code: 7002
  • Description: Toner motor C error
    When the toner motor C is driven, the motor over-current detection signal is detected continuously for 50 times (5 s) at 100 ms intervals.
  • Causes: Defective connector cable or poor contact in the connector. Defective drive transmission system of the toner motor C. Defective toner motor C. Defective engine PWB.
  • Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Toner motor C and engine PWB (YC25)
    Defective drive transmission system of the toner motor C. Check if the rollers and gears rotate smoothly. If not, grease the bushes and gears. Check for broken gears and replace if any.
    Defective toner motor C. Replace the toner motor C.
    Defective engine PWB. Replace the engine PWB and check for correct operation.
  • Code: 7003
  • Description: Toner motor M error
    When the toner motor M is driven, the motor over-current detection signal is detected continuously for 50 times (5 s) at 100 ms intervals.
  • Causes: Defective connector cable or poor contact in the connector. Defective drive transmission system of the toner motor M. Defective toner motor M. Defective engine PWB.
  • Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Toner motor M and engine PWB (YC24)
    Defective drive transmission system of the toner motor M. Check if the rollers and gears rotate smoothly. If not, grease the bushes and gears. Check for broken gears and replace if any.
    Defective toner motor M. Replace the toner motor M.
    Defective engine PWB. Replace the engine PWB and check for correct operation.
  • Code: 7004
  • Description: Toner motor Y error
    When the toner motor Y is driven, the motor over-current detection signal is detected continuously for 50 times (5 s) at 100 ms intervals.
  • Causes: Defective connector cable or poor contact in the connector. Defective drive transmission system of the toner motor Y. Defective toner motor Y. Defective engine PWB.
  • Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Toner motor Y and engine PWB (YC26)
    Defective drive transmission system of the toner motor Y. Check if the rollers and gears rotate smoothly. If not, grease the bushes and gears. Check for broken gears and replace if any.
    Defective toner motor Y. Replace the toner motor Y.
    Defective engine PWB. Replace the engine PWB and check for correct operation.
  • Code: 7401
  • Description: Developing unit K noninstalling error
    No density detection signal is output from toner sensor K in developing unit K.
  • Causes: Defective connector cable or poor contact in the connector. Defective toner sensor K. Defective engine PWB.
  • Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Developing unit K and Drum relay PWB (YC6) Drum relay PWB (YC1) and engine PWB (YC34)
    Defective toner sensor K. Replace the developing unit K.
    Defective engine PWB. Replace the engine PWB and check for correct operation.
  • Code: 7402
  • Description: Developing unit C noninstalling error
    No density detection signal is output from toner sensor C in developing unit C.
  • Causes: Defective connector cable or poor contact in the connector. Defective toner sensor C. Defective engine PWB.
  • Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Developing unit C and Drum relay PWB (YC10) Drum relay PWB (YC1) and engine PWB (YC34)
    Defective toner sensor C. Replace the developing unit C.
    Defective engine PWB. Replace the engine PWB and check for correct operation.
  • Code: 7403
  • Description: Developing unit M noninstalling error
    No density detection signal is output from toner sensor M in developing unit M.
  • Causes: Defective connector cable or poor contact in the connector. Defective toner sensor M. Defective engine PWB.
  • Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Developing unit M and Drum relay PWB (YC7) Drum relay PWB (YC1) and engine PWB (YC34)
    Defective toner sensor M. Replace the developing unit M.
    Defective engine PWB. Replace the engine PWB and check for correct operation.
  • Code: 7404
  • Description: Developing unit Y noninstalling error
    No density detection signal is output from toner sensor Y in developing unit Y.
  • Causes: Defective connector cable or poor contact in the connector. Defective toner sensor Y. Defective engine PWB.
  • Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Developing unit Y and Drum relay PWB (YC13) Drum relay PWB (YC1) and engine PWB (YC34)
    Defective toner sensor Y. Replace the developing unit Y.
    Defective engine PWB. Replace the engine PWB and check for correct operation.
  • Code: 7411
  • Description: Drum unit K non- installing error
    The EEPROM of drum PWB K does not communicate normally.
  • Causes: Installation of incompatible drum unit K. Defective connector cable or poor contact in the connector. Defective drum PWB K. Defective engine PWB.
  • Remedy: Installation of incompatible drum unit K. Install drum unit K compatible with the specifications to the machine.
    Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Drum unit K and Drum relay PWB (YC2) Drum relay PWB (YC1) and engine PWB (YC34)
    Defective drum PWB K. Replace the drum unit K.
    Defective engine PWB. Replace the engine PWB and check for correct operation.
  • Code: 7412
  • Description: Drum unit C non- installing error
    The EEPROM of drum PWB C does not communicate normally.
  • Causes: Installation of incompatible drum unit C. Defective connector cable or poor contact in the connector. Defective drum PWB C. Defective engine PWB.
  • Remedy: Installation of incompatible drum unit C. Install drum unit C compatible with the specifications to the machine.
    Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Drum unit C and Drum relay PWB (YC4) Drum relay PWB (YC1) and engine PWB (YC34)
    Defective drum PWB C. Replace the drum unit C.
    Defective engine PWB. Replace the engine PWB and check for correct operation.
  • Code: 7413
  • Description: Drum unit M non- installing error
    The EEPROM of drum PWB M does not communicate normally.
  • Causes: Installation of incompatible drum unit M. Defective connector cable or poor contact in the connector. Defective drum PWB M. Defective engine PWB.
  • Remedy: Installation of incompatible drum unit M. Install drum unit M compatible with the specifications to the machine.
    Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Drum unit M and Drum relay PWB (YC3) Drum relay PWB (YC1) and engine PWB (YC34)
    Defective drum PWB M. Replace the drum unit M.
    Defective engine PWB. Replace the engine PWB and check for correct operation.
  • Code: 7414
  • Description: Drum unit Y non- installing error
    The EEPROM of drum PWB Y does not communicate normally.
  • Causes: Installation of incompatible drum unit Y. Defective connector cable or poor contact in the connector. Defective drum PWB Y. Defective engine PWB.
  • Remedy: Installation of incompatible drum unit Y. Install drum unit Y compatible with the specifications to the machine.
    Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Drum unit Y and Drum relay PWB (YC5) Drum relay PWB (YC1) and engine PWB (YC34)
    Defective drum PWB Y. Replace the drum unit Y.
    Defective engine PWB. Replace the engine PWB and check for correct operation.
  • Code: 9500 … 9520
  • Description: Contact the Service Administrative Division.
  • Causes:
  • Remedy: Contact the Service Administrative Division.
  • Code: 9530
  • Description: Backup data error
    The serial number of the machine written on the EEPROM of the engine PWB differs with that is written on both the flash memory of the engine PWB and the EEPROM of the drum PWB as a backup.
  • Causes: Replacing both the engine PWB and the drum unit at the same time.
  • Remedy: Check that the machine operates properly by reverting the engine controller and the drum unit to the old ones. To replace the engine PWB and the drum unit at the same time, turn on the machine after replacing either one. Check that the machine operates properly and then turn off the machine. Replace the other and turn on the machine to check that the machine operates properly. Be sure to replace one by one.
  • Code: F000
  • Description: Main PWB — operation panel PWB communication error
  • Causes: Defective main PWB. Defective operation panel PWB.
  • Remedy: Defective main PWB. Turn the main power switch off/on to restart the machine. If the error is not resolved, replace main PWB.
    Defective operation panel PWB. Replace the operation panel PWB and check for correct operation.
  • Code: F010
  • Description: Main PWB checksum error
  • Causes: Defective main PWB
  • Remedy: Defective main PWB. Turn the main power switch off/on to restart the machine. If the error is not resolved, replace main PWB.
  • Code: F020
  • Description: Main PWB RAM checksum errors
  • Causes: Defective main memory (RAM) on the main PWB. Defective expanded memory (DIMM).
  • Remedy: Defective main memory (RAM) on the main PWB. Turn the main power switch off/on to restart the machine. If the error is not resolved, replace main PWB.
    Defective expanded memory (DIMM). Replace the expanded memory (DIMM).
  • Code: F040
  • Description: Main PWB — print engine communication error
  • Causes: Defective main PWB. Defective engine PWB.
  • Remedy: Defective main PWB. Turn the main power switch off/on to restart the machine. If the error is not resolved, replace main PWB.
    Defective engine PWB. Replace the engine PWB and check for correct operation.
  • Code: F041
  • Description: Main PWB — scanner engine communication error
  • Causes: Defective main PWB. Defective engine PWB.
  • Remedy: Defective main PWB. Turn the main power switch off/on to restart the machine. If the error is not resolved, replace main PWB.
    Defective engine PWB. Replace the engine PWB and check for correct operation.
  • Code: F050
  • Description: Print engine ROM checksum error
  • Causes: Defective engine PWB.
  • Remedy: Defective engine PWB. Turn the main power switch off/on to restart the machine. If the error is not resolved, replace engine PWB.
  • Code: F051
  • Description: Scanner engine ROM checksum error
  • Causes: Defective engine PWB.
  • Remedy: Defective engine PWB. Turn the main power switch off/on to restart the machine. If the error is not resolved, replace engine PWB.
  • Code: F278
  • Description: Power supply in drive system error
  • Causes: Main power switch was turned off without using the power key, or a power failure has occurred.
  • Remedy: Turn on power. (To switch off power, first press the power key until the main power indicator goes off, then turn the main power switch off.)
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