Máy photo màu ricoh c6501 báo lỗi sc300

Với lỗi sc 300 bạn chỉ cần kiểm tra lại thanh cao áp của máy. Đấy chính là nguyên nhân dẫn đến máy photocopy của bạn hiện thông báo này. Kiểm tra theo các bước sau

• Nguồn cấp cho thanh cao áp có vấn đề
• Dây cao áp bị đứt – curoa [ hoặc lưới cao áp bị bẩn ]
• Các đầu tiếp xúc bị kém

Cách khắc phục máy photo lỗi sc300 như thế nào ?

Cách 1 : đơn giản và dễ nhất

Bạn cần thao thanh cao áp ra và vệ sinh ? Vậy cách vệ sinh thế nào ?

1. Bạn kiểm tra các mắt lưới cao áp xem có bị bẩn hay bị đứt hay không
2. Nếu các sợi lưới không bị đứt nhưng do tia lửa điện làm các sợi cao áp bị bám vào nhau [ hãy lấy tua-vit nhẹ nhàng chỉnh về vị trí cũ – cái này cần tỉ mỉ và khéo tay bạn nhé @@ ]
3. Làm sạch 2 đầu đui cao áp [ chỗ tiếp xúc với máy photocopy ] – và làm sạch dây cao áp . Nếu dây cao áp bị đứt thì bạn cần nối lại [ căng đây vì không phải ai cũng làm được ]

Cách 2 : nếu bạn làm theo các bước trên mà chưa được thì làm theo cách này nhé

Ở đầu thanh cao áp có rắc cắm moto – bạn tháo ra và bật máy xem. Nếu vẫn máy vẫn báo lỗi sc 300 thì bạn nên thay thanh cao áp mới vì nó đã hỏng rồi [ cái gì cũng dùng nhiều rồi cũng có ngày phải thay thế mà @@ ]

Cách 3 : hãy gọi ngay Văn Phòng NHK VIệt Nam nếu bạn cần xử lý máy photo ricoh báo lỗi sc300 hay cần thanh cao áp mới nhé

Nếu 2 cách trên mà bạn vẫn chưa khắc phục được được lỗi sc 300. Đừng ngại hãy gọi 0947.438.131 chúng tôi sẽ hỗ trợ bạn nhanh nhất để máy photocopy của bạn hoạt động lại.

Đặc Biệt ưu đãi lên đến 30% cho khách hàng thường xuyên sửa chữa máy photocopy tại nhà hay đổ mực máy photocopy tại cơ quan, văn phòng

Hướng dẫn chi tiết khắc phục lỗi SC 300 trên máy Ricoh

Lỗi SC 300 trên máy in và máy photocopy Ricoh thường liên quan đến bộ phận cảm biến quang học của máy [đặc biệt là cảm biến quang học của bộ phận quét màu và đen trắng]. Dưới đây là hướng dẫn chi tiết để khắc phục:

1. Khởi động lại máy: Đôi khi việc đơn giản chỉ là khởi động lại máy có thể giải quyết vấn đề.

• Tắt máy.
• Đợi khoảng 5 phút.
• Bật lại máy và kiểm tra xem lỗi có biến mất không.

2. Kiểm tra cảm biến quang học:

• Mở nắp trước của máy.
• Tìm bộ phận cảm biến quang học [thường nằm gần bộ phận quét màu].
• Dùng bông hoặc khăn mềm để lau sạch bụi và dơ bẩn trên cảm biến.

3. Kiểm tra dây kết nối: Đôi khi, lỗi kết nối cũng có thể gây ra lỗi SC 300.

• Kiểm tra dây kết nối từ cảm biến quang học đến bo mạch chính.
• Đảm bảo rằng không có dây nào bị đứt hoặc lỏng lẻo.

4. Kiểm tra đèn scan:

• Khi bạn mở nắp máy và tiến hành quét, hãy chú ý xem đèn scan có sáng đúng màu và độ sáng không.
• Nếu đèn scan không hoạt động đúng cách, có thể cần thay thế.

5. Reset lỗi: Trên một số mô hình, bạn có thể cần phải reset lỗi sau khi đã thực hiện các bước khắc phục:

• Nhấn và giữ phím “Clear/Stop” cho đến khi máy yêu cầu bạn nhập mã.
• Nhập mã “107”.
• Nhấn và giữ phím “Start” cho đến khi màn hình thay đổi.
• Sử dụng màn hình cảm ứng để điều hướng đến “SP Mode” và reset lỗi.

Lưu ý: Nếu sau khi thực hiện tất cả các bước trên mà vấn đề vẫn không được giải quyết, bạn nên liên hệ với dịch vụ kỹ thuật hoặc nhà cung cấp của máy Ricoh để được hỗ trợ chính xác và hiệu quả hơn.

• Dirty optics • Dirty white plate • Exposure lamp defective • Exposure lamp does not turn on • Lamp stabilizer defective • High voltage line leak • SIB defective • SBU defectiveSC120Scanner home position error 1 The scanner home position sensor did not detect the home position [did not go OFF] after the scanner moved forward 20 mm..• Scanner motor defective • Scanner HP sensor defective • Harness between scanner motor and SIOB disconnected or broken. • SIOB defectiveSC121Scanner home position error 2 The scanner home position sensor did not go ON after the scanner moved forward 6 mm and the feeler entered the HP sensor.• Scanner motor harness loose, broken, defective • Scanner motor defective • Scanner HP sensor disconnected, defective • SIOB defectiveSC141Black level detection error During AGC the value for black level was not within ±3 of the prescribed value.• SBU defective • Harness defective • Check harnesses between SBU and IPU • IPU defective • VBCU defectiveSC142White level detection error During AGC the value for white level was not within -7 of the prescribed value.• Exposure lamp defective • Harness disconnected, damaged • Dirty exposure glass, optics • Scanner motor, drive assembly defective • SBU board defectiveSC143SBU Auto Adjust Error At power on the automatic white level adjustment failed.• Clean the white plate • Clean the optics and lenses • Check the connectors between the SBU and IPU. • Replace the SBU • Replace the IPU • Replace the VBCU • Replace the exposure lampSC144SBU communication error When the machine is switched on, or when the machine returns to full operation from the energy save mode, the machine can not access the SBU register, or the SBU register values are abnormal. Note: The ASIC IDs read during automatic adjustment of the SBU can be displayed with SP4600.• SBU harness loose, disconnected, defective • SBU board defective • VBCU defectiveSC161IPU error Communication error between IPU, SBU, and VBCU.• Check harness connections between SBU and IPU/VBCU • IPU defective • VBCU defectiveSC165Illegal Copy Prevention Error An abnormality was detected with the ICIB board at power on.• ICIB connected incorrectly • ICIB defectiveSC180Scanner fan lock The fan motor next to the SIOB did not switch on within 10 sec. after the CPU issued the ON signal.• Fan defective • Foreign object interfering with operation of fan • Motor harness loose, disconnected, or broken • SIOB defectiveSC181Scanner Fan Error: Lamp Stabilizer The exposure lamp regulator fan is not rotating.• Check the fan connections • Fan defective • Check SBU connection • Check SIOB connection • SBU defective • SIOB defectiveSC182Scanner Fan Error: Right Side The fan located on the right side of the exposure unit is not rotating.• Check the fan connections • Fan defective • Check SBU connection • Check SIOB connection • SBU defective • SIOB defectiveSC195Machine serial number error The number registered for the machine serial number does not match.• Confirm the correct serial number of the machine in the specifications • Important: When SC195 occurs, the serial number must be input. Please contact your technical supervisor.SC202Polygon motor error: ON timeout The polygon mirror motor does not reach the targeted operating speed within the prescribed time• Harness to polygon motor drive board disconnected, defective • Polygon motor defective • Polygon motor drive board defective • Polygon motor defective.SC203Polygon motor error: OFF timeout The polygon mirror motor does leave the READY status within 3 seconds after the polygon motor switches off.• Harness to polygon motor driver board disconnected, defective • Polygon motor defective • Polygon motor driver board defective • Polygon motor defective.CodeDescriptionCausesSC204Polygon motor error: XSCRDY signal error The polygon motor stopped operating while the LD unit was firing.• Harness to polygon motor driver board disconnected, defective • Polygon motor defective • Polygon motor driver board defectiveSC210Laser beam detection error: K [Black] The laser synchronization sensor failed to detect the beginning and end of the laser beam flash for the designated color onto the polygon mirror while the mirror is rotating at the prescribed number of revolutions.• Laser synchronization detector sensor connection loose, not connected • Laser synchronization detector sensor defective • LD unit defective • IPU defective • VBCU defectiveSC211Laser beam detection error: Y [Yellow] The laser synchronization sensor failed to detect the beginning and end of the laser beam flash for the designated color onto the polygon mirror while the mirror is rotating at the prescribed number of revolutions.• Laser synchronization detector sensor connection loose, not connected • Laser synchronization detector sensor defective • LD unit defective • IPU defective • VBCU defectiveSC212Laser beam detection error: M [Magenta] The laser synchronization sensor failed to detect the beginning and end of the laser beam flash for the designated color onto the polygon mirror while the mirror is rotating at the prescribed number of revolutions.• Laser synchronization detector sensor connection loose, not connected • Laser synchronization detector sensor defective • LD unit defective • IPU defective • VBCU defectiveSC213Laser beam detection error: C [Cyan] The laser synchronization sensor failed to detect the beginning and end of the laser beam flash for the designated color onto the polygon mirror while the mirror is rotating at the prescribed number of revolutions.• Laser synchronization detector sensor connection loose, not connected • Laser synchronization detector sensor defective • LD unit defective • IPU defective • VBCU defectiveSC220Laser Synchronization Detector Error: K Leading Edge: LD0 While the polygon motor is rotating normally, no synchronizing detection signal is output for LD0 black, or leading edge, even after the laser diode has been firing for 2 sec.• Harness between the laser synchronizing detector and I/F unit is disconnected, defective • Check all connections between LD unit, LDB, IPU • LD unit • LDB defective • IPU defectiveSC221Laser Synchronization Detector Error: K Leading Edge [Not LD0] While the polygon motor is rotating normally, no synchronizing detection signal is output for black, leading edge for any LD other than LD0.• Harness between the laser synchronizing detector and I/F unit is disconnected, defective • Check all connections between LD unit, LDB, IPU • LD unit • LDB defective • IPU defectiveSC222Laser Synchronization Detector Error: Y Leading Edge: LD0 While the polygon motor is rotating normally, no synchronizing detection signal is output for LD0 yellow, leading edge.• Harness between the laser synchronizing detector and I/F unit is disconnected, defective • Check all connections between LD unit, LDB, IPU • LD unit • LDB defective • IPU defectiveSC223Laser Synchronization Detector Error: Y Leading Edge [Not LD0] While the polygon motor is rotating normally, no synchronizing detection signal is output for yellow, leading edge for any LD other than LD0.• Harness between the laser synchronizing detector and I/F unit is disconnected, defective • Check all connections between LD unit, LDB, IPU • LD unit • LDB defective • IPU defectiveSC224Laser Synchronization Detector Error: M Leading Edge: LD0 While the polygon motor is rotating normally, no synchronizing detection signal is output for LD0 magenta, leading edge.• Harness between the laser synchronizing detector and I/F unit is disconnected, defective • Check all connections between LD unit, LDB, IPU • LD unit • LDB defective • IPU defectiveSC225Laser Synchronization Detector Error: M Leading Edge [Not LD0] While the polygon motor is rotating normally, no synchronizing detection signal is output for magenta, leading edge for any LD other than LD0.• Harness between the laser synchronizing detector and I/F unit is disconnected, defective • Check all connections between LD unit, LDB, IPU • LD unit • LDB defective • IPU defectiveSC226Laser Synchronization Detector Error: C Leading Edge: LD0 While the polygon motor is rotating normally, no synchronizing detection signal is output for LD0 cyan, leading edge.• Harness between the laser synchronizing detector and I/F unit is disconnected, defective • Check all connections between LD unit, LDB, IPU • LD unit • LDB defective • IPU defectiveSC227Laser Synchronization Detector Error: C Leading Edge [Not LD0] While the polygon motor is rotating normally, no synchronizing detection signal is output for cyan, leading edgefor any LD other than LD0.• Harness between the laser synchronizing detector and I/F unit is disconnected, defective • Check all connections between LD unit, LDB, IPU • LD unit • LDB defective • IPU defectiveSC230FGATE error: Feedback remains HIGH for K write After the start of timing to create the black image, the PFGATE register of the GAVD did not assert• Harness between the VBCU and LDB unit disconnected, loose, or defective. • LD unit defective • IPU defective • Controller board disconnected, defective • HDD defectiveSC231FGATE error: Feedback remains LOW for K write After the start of timing to create the black image, the PFGATE register of the GAVD did not assert.• Harness between the VBCU and LDB unit disconnected, loose, or defective. • LD unit defective • IPU defective • Controller board disconnected, defective • HDD defectiveCodeDescriptionCausesSC232FGATE error: Feedback remains HIGH for Y write After the start of timing to create the yellow image, the PFGATE register of the GAVD did not assert.• Harness between the VBCU and LDB unit disconnected, loose, or defective. • LD unit defective • IPU defective • Controller board disconnected, defective • HDD defectiveSC233FGATE error: Feedback remains LOW for Y write After the start of timing to create the yellow image, the PFGATE register of the GAVD did not assert.• Harness between the VBCU and LDB unit disconnected, loose, or defective. • LD unit defective • IPU defective • Controller board disconnected, defective • HDD defectiveSC234FGATE error 1: Feedback remains HIGH for M write After the start of timing to create the magenta image, the PFGATE register of the GAVD did not assert.• Harness between the VBCU and LDB unit disconnected, loose, or defective. • LD unit defective • IPU defective • Controller board disconnected, defective • HDD defectiveSC235FGATE error: Feedback remains LOW for M write After the start of timing to create the magenta image, the PFGATE register of the GAVD does not assert.• Harness between the VBCU and LDB unit disconnected, loose, or defective. • LD unit defective • IPU defective • Controller board disconnected, defective • HDD defectiveSC236FGATE error 1: Feedback remains HIGH for C write After the start of timing to create the cyan image, the PFGATE register of the GAVD did not assert.• Harness between the VBCU and LDB unit disconnected, loose, or defective. • LD unit defective • IPU defective • Controller board disconnected, defective • HDD defectiveSC237FGATE error: Feedback remains LOW for C write After the start of timing to create the cyan image, the PFGATE register of the GAVD does not assert.• Harness between the VBCU and LDB unit disconnected, loose, or defective. • LD unit defective • IPU defective • Controller board disconnected, defective • HDD defectiveSC240LD error: K An error occurred at the LD error terminal of the K, Y, M, or C LD driver after initialization of the LD because the power to the LD was higher or lower than the prescribed limit.• LD defective due to wear, damage, short circuit • LDB harness disconnected, loose or defectiveSC241LD error: Y An error occurred at the LD error terminal of the K, Y, M, or C LD driver after initialization of the LD because the power to the LD was higher or lower than the prescribed limit.• LD defective due to wear, damage, short circuit • LDB harness disconnected, loose or defectiveSC242LD error: M An error occurred at the LD error terminal of the K, Y, M, or C LD driver after initialization of the LD because the power to the LD was higher or lower than the prescribed limit.• LD defective due to wear, damage, short circuit • LDB harness disconnected, loose or defectiveSC243LD error: C An error occurred at the LD error terminal of the K, Y, M, or C LD driver after initialization of the LD because the power to the LD was higher or lower than the prescribed limit.• LD defective due to wear, damage, short circuit • LDB harness disconnected, loose or defectiveSC268Optical unit sensor error At power on, one of the two temperature sensors in the optics unit detected a temperature lower than -10°C. -or- It detected a temperature higher than 80°C.• Thermistor disconnected [causes extremely low temperature reading] • Thermistor damaged and short circuited [causes extremely high temperature reading] • VBCU defectiveSC270Skew Control Upper Lower Limit: Y The pulse total for Yellow skew control is not within the prescribed range.• ITB not installed correctly. • ITB defective • Optical unit installed incorrectly • Optical unit defectiveSC271Skew Control Upper Lower Limit: M The pulse total for Magenta skew control is not within the prescribed range.• ITB not installed correctly. • ITB defective • Optical unit installed incorrectly • Optical unit defectiveSC272Skew Control Upper Lower Limit: C The pulse total for Cyan skew control is not within the prescribed range.• ITB not installed correctly. • ITB defective • Optical unit installed incorrectly • Optical unit defectiveSC285MUSIC Continuous Failure The MUSIC adjustment failed after four attempts.• Fusing belt installed incorrectly • Fusing belt surface scoured, scratched • MUSIC sensors dirty, defectiveCodeDescriptionCausesSC300Drum charge corona wire error: K The output of the charge corona wire of the black PCU is abnormal.• CGB power pack connection loose, broken defective • Check CGB power pack connection to BCU • CGB power pack defective • BCU defective • Replace OPC drumSC301AC charge output error: M An interrupt checks the status of the power pack every 10 ms. This SC is issued if the VBCU detects a short in the AC charge for M, C, Y.• Disconnect the high voltage cable from Terminal C of the multiple high-voltage supply board. • Attach a voltmeter to the terminal. • If there is no output from the terminal, replace the high voltage power supply. -or- • If there is output from the terminal, test the resistance between the high voltage cable and the ground. If resistance is nearly "0", check the high-voltage harness for defects and replace it if necessary. • Test the conductivity between the OPC unit and the ground. If there is no conductivity between the OPC unit and ground, replace the OPC unit. • If there is no charge PWM signal, replace the harness and/or VBCU.SC302AC charge output error: C An interrupt checks the status of the power pack every 10 ms. This SC is issued if the VBCU detects a short in the AC charge for M, C, Y.• Disconnect the high voltage cable from Terminal C of the multiple high-voltage supply board. • Attach a voltmeter to the terminal. • If there is no output from the terminal, replace the high voltage power supply. -or- • If there is output from the terminal, test the resistance between the high voltage cable and the ground. If resistance is nearly "0", check the high-voltage harness for defects and replace it if necessary. • Test the conductivity between the OPC unit and the ground. If there is no conductivity between the OPC unit and ground, replace the OPC unit. • If there is no charge PWM signal, replace the harness and/or VBCU.SC303AC charge output error: Y An interrupt checks the status of the power pack every 10 ms. This SC is issued if the VBCU detects a short in the AC charge for M, C, Y.• Disconnect the high voltage cable from Terminal C of the multiple high-voltage supply board. • Attach a voltmeter to the terminal. • If there is no output from the terminal, replace the high voltage power supply. -or- • If there is output from the terminal, test the resistance between the high voltage cable and the ground. If resistance is nearly "0", check the high-voltage harness for defects and replace it if necessary. • Test the conductivity between the OPC unit and the ground. If there is no conductivity between the OPC unit and ground, replace the OPC unit. • If there is no charge PWM signal, replace the harness and/or VBCU.SC304Charge Corona Error: Charge Leak [K PCU] A abnormal detection signal [H] was detected for longer than 250 ms.• Turn the machine power off/on • CGB power pack harness connectors loose, broken, defective • Corona wire caps loose, missing • CGB power pack defective • Charge corona unit connectors loose, broken, defectiveSC308Charge Corona Error: Wire Cleaner Error [K PCU] The charge corona wire cleaner motor remained locked after the motor was switched on, or failed to switch off within the prescribed time after cleaning started.• Turn the machine power off/on • Motor overloaded due to a physical obstruction • Motor defectiveSC313Charge, development error: M After the M, C, or Y drum started to rotate, the feedback for the charge unit of the color dropped below 0.3V.• Make sure that the settings of SP2202 are at the defaults. • Check harness connections between charge roller and transfer power pack. • Defective charge roller • Defective power packSC314Charge, development error: C After the M, C, or Y drum started to rotate, the feedback for the charge unit of the color dropped below 0.3V.• Make sure that the settings of SP2202 are at the defaults. • Check harness connections between charge roller and transfer power pack. • Defective charge roller • Defective power packSC315Charge, development error: Y After the M, C, or Y drum started to rotate, the feedback for the charge unit of the color dropped below 0.3V.• Make sure that the settings of SP2202 are at the defaults. • Check harness connections between charge roller and transfer power pack. • Defective charge roller • Defective power packSC316Drum Charge Error: K Drum charge output voltage [Vpp] exceeded 2.8 kV.• Check the connections of the charge unit of the PCU where the problem occurred. • Replace the charge unit of the PCU [CBG power pack for the K PCU, charge roller unit for YMC PCUs]SC317Drum Charge Error: M Drum charge output voltage [Vpp] exceeded 2.8 kV.• Check the connections of the charge unit of the PCU where the problem occurred. • Replace the charge unit of the PCU [CBG power pack for the K PCU, charge roller unit for YMC PCUs]SC318Drum Charge Error: C Drum charge output voltage [Vpp] exceeded 2.8 kV.• Check the connections of the charge unit of the PCU where the problem occurred. • Replace the charge unit of the PCU [CBG power pack for the K PCU, charge roller unit for YMC PCUs]SC319Drum Charge Error: Y Drum charge output voltage [Vpp] exceeded 2.8 kV.• Check the connections of the charge unit of the PCU where the problem occurred. • Replace the charge unit of the PCU [CBG power pack for the K PCU, charge roller unit for YMC PCUs]SC320Development power pack error: K This SC is issued if the VBCU detects a short in the development DC charge for K, M, C, Y.• Development power pack defective • High voltage power supply defective • High voltage power supply harness defective • Development unit defective • IOB harness disconnected or defective • IOB defectiveSC321Development power pack error: M This SC is issued if the VBCU detects a short in the development DC charge for K, M, C, Y.• Development power pack defective • High voltage power supply defective • High voltage power supply harness defective • Development unit defective • IOB harness disconnected or defective • IOB defectiveCodeDescriptionCausesSC322Development power pack error: C This SC is issued if the VBCU detects a short in the development DC charge for K, M, C, Y.• Development power pack defective • High voltage power supply defective • High voltage power supply harness defective • Development unit defective • IOB harness disconnected or defective • IOB defectiveSC323Development power pack error: Y This SC is issued if the VBCU detects a short in the development DC charge for K, M, C, Y.• Development power pack defective • High voltage power supply defective • High voltage power supply harness defective • Development unit defective • IOB harness disconnected or defective • IOB defectiveSC324Development motor error: K The PLL lock signal remained HIGH or LOW for longer than the prescribed time for the K, M, C, or Y, development motor.• Development motor shaft locked, blocked by obstruction • Development motor defective • DRB defectiveSC325Development motor error: M The PLL lock signal remained HIGH or LOW for longer than the prescribed time for the K, M, C, or Y, development motor.• Development motor shaft locked, blocked by obstruction • Development motor defective • DRB defectiveSC326Development motor error: C The PLL lock signal remained HIGH or LOW for longer than the prescribed time for the K, M, C, or Y, development motor.• Development motor shaft locked, blocked by obstruction • Development motor defective • DRB defectiveSC327Development motor error: Y The PLL lock signal remained HIGH or LOW for longer than the prescribed time for the K, M, C, or Y, development motor.• Development motor shaft locked, blocked by obstruction • Development motor defective • DRB defectiveSC336Developer set error: K The value of Vcnt is set at the maximum or minimum setting when the TD sensor is initialized.1. Open the front door. 2. Pull out the film seal from the black, magenta, cyan, or yellow developer bottle. 3. Do the correct SP for the affected color: • SP3801 003 to initialize the TD sensor for K. • SP3801 004 to initialize the TD sensor for M. • SP3801 005 to initialize the TD sensor for C. • SP3801 006 to initialize the TD sensor for YSC337Developer set error: M The value of Vcnt is set at the maximum or minimum setting when the TD sensor is initialized.1. Open the front door. 2. Pull out the film seal from the black, magenta, cyan, or yellow developer bottle. 3. Do the correct SP for the affected color: • SP3801 003 to initialize the TD sensor for K. • SP3801 004 to initialize the TD sensor for M. • SP3801 005 to initialize the TD sensor for C. • SP3801 006 to initialize the TD sensor for YSC338Developer set error: C The value of Vcnt is set at the maximum or minimum setting when the TD sensor is initialized.1. Open the front door. 2. Pull out the film seal from the black, magenta, cyan, or yellow developer bottle. 3. Do the correct SP for the affected color: • SP3801 003 to initialize the TD sensor for K. • SP3801 004 to initialize the TD sensor for M. • SP3801 005 to initialize the TD sensor for C. • SP3801 006 to initialize the TD sensor for YSC339Developer set error: Y The value of Vcnt is set at the maximum or minimum setting when the TD sensor is initialized.1. Open the front door. 2. Pull out the film seal from the black, magenta, cyan, or yellow developer bottle. 3. Do the correct SP for the affected color: • SP3801 003 to initialize the TD sensor for K. • SP3801 004 to initialize the TD sensor for M. • SP3801 005 to initialize the TD sensor for C. • SP3801 006 to initialize the TD sensor for YSC348Toner supply motor error 2 sec. after the motor START signal is output, a LOCK signal cannot be detected.• Motor harness disconnected, loose, or defective • Toner pump overload • Sub hopper overload • Toner hopper motor defectiveSC350Developer Fill Error: K The PCU failed to fill with developer from the developer bottle when SP3814-1 was executed.• Developer bottle not set correctly • Developer in the bottle is clogged and not flowing Note: For detailed information about how to handle problems developer filling, see "Handling Problems with Developer Filling" under "PCU" in Section 3.SC351Developer Fill Error: M The PCU failed to fill with developer from the developer bottle when SP3814-1 was executed.• Developer bottle not set correctly • Developer in the bottle is clogged and not flowing Note: For detailed information about how to handle problems developer filling, see "Handling Problems with Developer Filling" under "PCU" in Section 3.SC352Developer Fill Error: C The PCU failed to fill with developer from the developer bottle when SP3814-1 was executed.• Developer bottle not set correctly • Developer in the bottle is clogged and not flowing Note: For detailed information about how to handle problems developer filling, see "Handling Problems with Developer Filling" under "PCU" in Section 3.SC353Developer Fill Error: Y The PCU failed to fill with developer from the developer bottle when SP3814-1 was executed.• Developer bottle not set correctly • Developer in the bottle is clogged and not flowing Note: For detailed information about how to handle problems developer filling, see "Handling Problems with Developer Filling" under "PCU" in Section 3.CodeDescriptionCausesSC360TD sensor [Vt high] error: K The Vt value of the black, magenta, cyan, or yellow TD sensor exceeds 0.5V for 10 counts.• Black, magenta, cyan, or yellow TD sensor disconnected • Harness between TD sensor and PCU defective • Defective TD sensor, replace the PCU Note: The TD sensor cannot be replaced independently. The PCU must be replaced if the TD sensor is defective.SC361TD sensor [Vt high] error: M The Vt value of the black, magenta, cyan, or yellow TD sensor exceeds 0.5V for 10 counts.• Black, magenta, cyan, or yellow TD sensor disconnected • Harness between TD sensor and PCU defective • Defective TD sensor, replace the PCU Note: The TD sensor cannot be replaced independently. The PCU must be replaced if the TD sensor is defective.SC362TD sensor [Vt high] error: C The Vt value of the black, magenta, cyan, or yellow TD sensor exceeds 0.5V for 10 counts.• Black, magenta, cyan, or yellow TD sensor disconnected • Harness between TD sensor and PCU defective • Defective TD sensor, replace the PCU Note: The TD sensor cannot be replaced independently. The PCU must be replaced if the TD sensor is defective.SC363TD sensor [Vt high] error: Y The Vt value of the black, magenta, cyan, or yellow TD sensor exceeds 0.5V for 10 counts.• Black, magenta, cyan, or yellow TD sensor disconnected • Harness between TD sensor and PCU defective • Defective TD sensor, replace the PCU Note: The TD sensor cannot be replaced independently. The PCU must be replaced if the TD sensor is defective.SC364TD sensor [Vt low] error: K The Vt value of the black, magenta, cyan, or yellow TD sensor is below 0.5V for 10 counts.• TD sensor harness disconnected, loose, defective • A drawer connector [located on the rear of a development unit] disconnected, loose, defective • TD sensor defective, replace the PCU Note: The TD sensor cannot be replaced independently. The PCU must be replaced if the TD sensor is defective.SC365TD sensor [Vt low] error: M The Vt value of the black, magenta, cyan, or yellow TD sensor is below 0.5V for 10 counts.• TD sensor harness disconnected, loose, defective • A drawer connector [located on the rear of a development unit] disconnected, loose, defective • TD sensor defective, replace the PCU Note: The TD sensor cannot be replaced independently. The PCU must be replaced if the TD sensor is defective.SC366TD sensor [Vt low] error: C The Vt value of the black, magenta, cyan, or yellow TD sensor is below 0.5V for 10 counts.• TD sensor harness disconnected, loose, defective • A drawer connector [located on the rear of a development unit] disconnected, loose, defective • TD sensor defective, replace the PCU Note: The TD sensor cannot be replaced independently. The PCU must be replaced if the TD sensor is defective.SC367TD sensor [Vt low] error: Y The Vt value of the black, magenta, cyan, or yellow TD sensor is below 0.5V for 10 counts.• TD sensor harness disconnected, loose, defective • A drawer connector [located on the rear of a development unit] disconnected, loose, defective • TD sensor defective, replace the PCU Note: The TD sensor cannot be replaced independently. The PCU must be replaced if the TD sensor is defective.SC372TD sensor adjustment error: K During TD sensor initialization with SP3801, the output value of the black, magenta, cyan, or yellow TD sensor is not within the range of 2.5+-0.2VTD harness sensor disconnected, loose or defective Harness between TD sensor and drawer disconnected, defective • TD sensor defective, replace the PCU Note: The TD sensor cannot be replaced independently. The PCU must be replaced if the TD sensor is defective.SC373TD sensor adjustment error: M During TD sensor initialization with SP3801, the output value of the black, magenta, cyan, or yellow TD sensor is not within the range of 2.5+-0.2VTD harness sensor disconnected, loose or defective Harness between TD sensor and drawer disconnected, defective • TD sensor defective, replace the PCU Note: The TD sensor cannot be replaced independently. The PCU must be replaced if the TD sensor is defective.SC374TD sensor adjustment error: C During TD sensor initialization with SP3801, the output value of the black, magenta, cyan, or yellow TD sensor is not within the range of 2.5+-0.2VTD harness sensor disconnected, loose or defective Harness between TD sensor and drawer disconnected, defective • TD sensor defective, replace the PCU Note: The TD sensor cannot be replaced independently. The PCU must be replaced if the TD sensor is defective.SC375TD sensor adjustment error: Y During TD sensor initialization with SP3801, the output value of the black, magenta, cyan, or yellow TD sensor is not within the range of 2.5+-0.2VTD harness sensor disconnected, loose or defective Harness between TD sensor and drawer disconnected, defective • TD sensor defective, replace the PCU Note: The TD sensor cannot be replaced independently. The PCU must be replaced if the TD sensor is defective.SC396Drum motor error: K The motor is trying to rotate at power on or during normal operation but there is an excessive load on the drum shaft. The motor has no traction [due to a bent cleaning blade, for example].• Drum motor harness loose, broken, defective • Drum motor defective • DTMB defectiveSC397Drum motor error: M The motor is trying to rotate at power on or during normal operation but there is an excessive load on the drum shaft. The motor has no traction [due to a bent cleaning blade, for example].• Drum motor harness loose, broken, defective • Drum motor defective • DTMB defectiveSC398Drum motor error: C The motor is trying to rotate at power on or during normal operation but there is an excessive load on the drum shaft. The motor has no traction [due to a bent cleaning blade, for example].• Drum motor harness loose, broken, defective • Drum motor defective • DTMB defectiveCodeDescriptionCausesSC399Drum motor error: Y The motor is trying to rotate at power on or during normal operation but there is an excessive load on the drum shaft. The motor has no traction [due to a bent cleaning blade, for example].• Drum motor harness loose, broken, defective • Drum motor defective • DTMB defectiveSC400ID sensor error: Calibration Before adjustment Vsg_reg3000 This means the current to the LED of the ID sensor is abnormal.• ID sensor dirty • ID sensor defectiveSC420Potential sensor error: Vd Adjustment K The development potential of the drum before exposure [Vd] cannot be adjusted to within +-8 V of the target voltage [-900V].• Drum potential sensor harness, connector is loose, broken, defective • Drum potential sensor dirty • Drum potential sensor defective • Drum connector, harness loose, broken, defective • Development power pack defective • VBCU defectiveSC421Potential sensor error: Vd Adjustment K The development potential of the drum before exposure [Vd] cannot be adjusted to within +-8 V of the target voltage [-900V].• Drum potential sensor harness, connector is loose, broken, defective • Drum potential sensor dirty • Drum potential sensor defective • Drum connector, harness loose, broken, defective • Development power pack defective • VBCU defectiveSC422Potential sensor error: Vd Adjustment M The development potential of the drum before exposure [Vd] cannot be adjusted to within +-8 V of the target voltage [-900V].• Drum potential sensor harness, connector is loose, broken, defective • Drum potential sensor dirty • Drum potential sensor defective • Drum connector, harness loose, broken, defective • Development power pack defective • VBCU defectiveSC423Potential sensor error: Vd Adjustment C The development potential of the drum before exposure [Vd] cannot be adjusted to within +-8 V of the target voltage [-900V].• Drum potential sensor harness, connector is loose, broken, defective • Drum potential sensor dirty • Drum potential sensor defective • Drum connector, harness loose, broken, defective • Development power pack defective • VBCU defectiveCodeDescriptionCausesSC423Potential sensor error: Vd Adjustment Y The development potential of the drum before exposure [Vd] cannot be adjusted to within +-8 V of the target voltage [-900V].• Drum potential sensor harness, connector is loose, broken, defective • Drum potential sensor dirty • Drum potential sensor defective • Drum connector, harness loose, broken, defective • Development power pack defective • VBCU defectiveSC424Potential sensor error 5: Vl adjustment K Vpl could not be adjusted to within +-5V of the target Vpl after exposure of the ID sensor patterns.• Drum worn • LD unit dirty • Poor drum ground connectionSC425Potential sensor error 6: Vl adjustment M Vpl could not be adjusted to within +-5V of the target Vpl after exposure of the ID sensor patterns.• Drum worn • LD unit dirty • Poor drum ground connectionSC426Potential sensor error 7: Vl adjustment C Vpl could not be adjusted to within +-5V of the target Vpl after exposure of the ID sensor patterns.• Drum worn • LD unit dirty • Poor drum ground connectionSC427Potential sensor error 8: Vl adjustment Y Vpl could not be adjusted to within +-5V of the target Vpl after exposure of the ID sensor patterns.• Drum worn • LD unit dirty • Poor drum ground connectionSC432Potential sensor error 1: Vr K Vr > 200V. The residual voltage [Vr], the amount of voltage that remains on the surface of the drum after the QL fires is greater than 200V.• Potential sensor dirty • Potential sensor defective • Charge roller defective • Charge power pack defective • OPC defectiveSC433Potential sensor error 2: Vr M Vr > 200V. The residual voltage [Vr], the amount of voltage that remains on the surface of the drum after the QL fires is greater than 200V.• Potential sensor dirty • Potential sensor defective • Charge roller defective • Charge power pack defective • OPC defectiveSC434Potential sensor error 3: Vr C Vr > 200V. The residual voltage [Vr], the amount of voltage that remains on the surface of the drum after the QL fires is greater than 200V.• Potential sensor dirty • Potential sensor defective • Charge roller defective • Charge power pack defective • OPC defectiveSC435Potential sensor error 4: Vr Y Vr > 200V. The residual voltage [Vr], the amount of voltage that remains on the surface of the drum after the QL fires is greater than 200V.• Potential sensor dirty • Potential sensor defective • Charge roller defective • Charge power pack defective • OPC defectiveSC436Potential sensor error: Vd K The VdHome reading, the first step of the process control self-check, detected that the development potential of the unexposed areas of the drum are not within the prescribed range [-500 to -800]• Potential sensor dirty • Potential sensor defective • Charge roller defective • Charge power pack defective • OPC defectiveSC437Potential sensor error: Vd M The VdHome reading, the first step of the process control self-check, detected that the development potential of the unexposed areas of the drum are not within the prescribed range [-500 to -800]• Potential sensor dirty • Potential sensor defective • Charge roller defective • Charge power pack defective • OPC defectiveSC438Potential sensor error: Vd C The VdHome reading, the first step of the process control self-check, detected that the development potential of the unexposed areas of the drum are not within the prescribed range [-500 to -800]• Potential sensor dirty • Potential sensor defective • Charge roller defective • Charge power pack defective • OPC defectiveSC439Potential sensor error: Vd Y The VdHome reading, the first step of the process control self-check, detected that the development potential of the unexposed areas of the drum are not within the prescribed range [-500 to -800]• Potential sensor dirty • Potential sensor defective • Charge roller defective • Charge power pack defective • OPC defectiveSC440Image transfer power pack error: K An interrupt checks the status of the power pack every 10 ms. This SC is issued if the VBCU detects a short in the power pack for K, M, C, or Y.• Transfer belt damaged, insulation damaged • Insulation on high voltage cable damaged • Another hot point inside the machine has damaged insulation • Insulation around high-voltage power supply damagedSC441Image transfer power pack error: M An interrupt checks the status of the power pack every 10 ms. This SC is issued if the VBCU detects a short in the power pack for K, M, C, or Y.• Transfer belt damaged, insulation damaged • Insulation on high voltage cable damaged • Another hot point inside the machine has damaged insulation • Insulation around high-voltage power supply damagedCodeDescriptionCausesSC442Image transfer power pack error: C An interrupt checks the status of the power pack every 10 ms. This SC is issued if the VBCU detects a short in the power pack for K, M, C, or Y.• Transfer belt damaged, insulation damaged • Insulation on high voltage cable damaged • Another hot point inside the machine has damaged insulation • Insulation around high-voltage power supply damagedSC443Image transfer power pack error: Y An interrupt checks the status of the power pack every 10 ms. This SC is issued if the VBCU detects a short in the power pack for K, M, C, or Y.• Transfer belt damaged, insulation damaged • Insulation on high voltage cable damaged • Another hot point inside the machine has damaged insulation • Insulation around high-voltage power supply damagedSC445Image transfer motor error The control board of the ITB motor belt generated signals that indicate there is problem with the image transfer belt motor.• ITB motor defective • ITB control board defective • ITB overloaded • Encoder strip on the edge of the ITB damaged.SC446ITB lift motor error The state of the ITB lift sensor does not change its state [switching from off to on or vice versa], even after the ITB lift motor starts rotating.• ITB lift sensor dirty, disconnected, defective • ITB lift motor disconnected, defective • ITB sensor defective • ITB lift motor defectiveSC447Image transfer roller position error The machine checks for the presence of the K STC and the checks the status of the K image transfer roller lift sensor after the door is closed.• Transfer belt release lever down • Lift sensor connector loose, broken, dirty • Lift sensor defectiveSC450Transfer power pack output error An interrupt checks the status of the power pack every 2 ms. This SC is issued if the VBCU detects a short in the power pack 250 times at T2 within 500 ms.• Damaged insulation on the high-voltage supply cable • Damaged insulation around the highvoltage power supply. • Check SIOB harness connections • SIOB defectiveSC452PTR lift mechanism error The PTR was not detected at the home position within 2 sec. after the PTR lift motor turned on.• PTR HP sensor dirty, disconnected, defective • PTR lift motor disconnected, defectiveSC455PTR motor error The lock signal from the paper transfer motor was not detected within 1 sec. after the motor switched on.• Motor disconnected • PTR shaft locked, needs cleaning, blocked by obstruction • Drive shaft of the ITB locked and overloaded, needs cleaning, or blocked by obstruction • DRB disconnected, defectiveSC460Separation power pack output error This SC is issued if the VBCU detects a short in the transfer power pack.• Damaged insulation on the high-voltage supply cable [replace cable] • Damaged insulation around the transfer power packSC465Image Transfer Roller End: K The machine detected an abnormal reading of the resistance of the transfer roller because it is near the end of its service life.• Check the connections between the transfer roller power pack the roller • Replace image transfer roller • Image transfer power pack defectiveSC466Image Transfer Roller End: M The machine detected an abnormal reading of the resistance of the transfer roller because it is near the end of its service life.• Check the connections between the transfer roller power pack the roller • Replace image transfer roller • Image transfer power pack defectiveSC467Image Transfer Roller End: C The machine detected an abnormal reading of the resistance of the transfer roller because it is near the end of its service life.• Check the connections between the transfer roller power pack the roller • Replace image transfer roller • Image transfer power pack defectiveSC468Image Transfer Roller End: Y The machine detected an abnormal reading of the resistance of the transfer roller because it is near the end of its service life.• Check the connections between the transfer roller power pack the roller • Replace image transfer roller • Image transfer power pack defectiveSC472ITB Bias Roller End The machine detected an abnormal reading of the resistance of the ITB bias roller because it is near the end of its service life.• Check the connections between the transfer power pack • Replace image transfer roller • Transfer power pack defectiveSC480Drum cleaning motor error: K The drum cleaning motor failed to switch on [motor lock], or failed to reach the required speed within the prescribed time.• Motor block by physical obstruction • Motor harness loose, broken, defective • Motor defectiveCodeDescriptionCausesSC481Drum cleaning motor error: M The drum cleaning motor failed to switch on [motor lock], or failed to reach the required speed within the prescribed time.• Motor block by physical obstruction • Motor harness loose, broken, defective • Motor defectiveSC482Drum cleaning motor error: C The drum cleaning motor failed to switch on [motor lock], or failed to reach the required speed within the prescribed time.• Motor block by physical obstruction • Motor harness loose, broken, defective • Motor defectiveSC483Drum cleaning motor error: Y The drum cleaning motor failed to switch on [motor lock], or failed to reach the required speed within the prescribed time.• Motor block by physical obstruction • Motor harness loose, broken, defective • Motor defectiveSC484Used toner bottle full The toner full sensor has detected that the used toner bottle is full.• Remove the used toner bottle • Empty the used toner bottle and reinstall itSC485Used toner bottle motor error The lock signal of the used toner bottle motor remains HIGH for more than 600 ms.• Used toner bottle harness loose, broken, defective • Used toner bottle motor defectiveSC487Used toner bottle set error The set sensor of the used toner bottle remains LOW for more than 500 ms. [The sensor goes HIGH when the bottle is installed correctly.]• Used toner bottle not installed • Remove used toner bottle and reinstall correctlySC488Used toner transport lock Used toner cannot be transported to the used toner bottle.• Blockage in the line to the used toner bottleSC490MUSIC sensor error One or more of the MUSIC sensors is not functioning normally.• MUSIC sensor harness loose, broken, defective • Sensor defectiveSC495ITB encoder sensor error The ITB encoder sensor that reads the encoded strip on the ITB is not functioning properly.• Sensor dirty • Sensor harness loose, broken, defective • Sensor out of position because installed incorrectly • ITB installed incorrectlySC496MUSIC sensor error The MUSIC sensor detected an abnormal pattern on the ITB because: • ADC exceeded upper or lower limit. • The pattern used to calculate the amount of skew is abnormal. • The reading of the pattern exceeded the length of time the LED projected light. • LED light could not be adjusted correctly.• ITB installed incorrectly • Inspect ITB belt for damage, replace • MUSIC pattern abnormal; do a forced process control [SP3821] and check the result. • MUSIC sensor defective or disconnectedSC497Temperature and humidity sensor error: M PCU The thermistor output of the temperature and humidity sensor above the M PCU was not within the prescribed range [0.5V to 4.2V]• Temperature and humidity sensor harness disconnected, loose, defective • Temperature and humidity sensor defectiveSC498Temperature and humidity sensor error: Toner Bottle The thermistor output of the temperature and humidity sensor below the used toner bottle was not within the prescribed range [0.5V to 4.2V]• Temperature and humidity sensor harness disconnected, loose, defective • Temperature and humidity sensor defectiveSC499ITB encoder sensor error The ITB sensor that reads the encoded film strip on the edge of the image transfer belt is sending is operating correctly.• ITB encoder sensor dirty • Sensor harness disconnected or damaged • Encoded scale on the edge of the ITB is damaged or dirty • ITB installed incorrectlySC501Tray 1 [tandem tray] feed error [Japan Only] The tray 1 lift sensor does not switch on 10 s after the tray lift motor switches on and starts lifting the bottom plate. When the tray lowers, the tray lift sensor does not go off within 1.5 sec. The lower limit sensor of the tandem tray does not detect the lower limit within 10 sec.• Tray lift motor harness disconnected, loose, defective • Paper or other obstacle trapped between tray and motor • Tray lift sensor disconnected, damaged • Lower limit sensor disconnected, damaged • Pick-up solenoid disconnected, blocked by an obstacleSC502Tray 2 [paper cassette] feed error [Japan Only] The lift sensor is not activated within 10 seconds after the tray lift motor starts lifting the bottom plate. When the tray lowers, the tray lift sensor does not go off within 1.5 sec. The lower limit sensor of the tandem tray does not detect the lower limit within 10 sec.• Tray lift motor defective or disconnected • Paper or other obstacle trapped between tray and motor • Pick-up solenoid disconnected or blocked by an obstacleCodeDescriptionCausesSC503Tray 1 feed error The lift sensor is not activated within 10 seconds after the tray lift motor starts lifting the bottom plate. When the tray lowers, the tray lift sensor does not go off within 1.5 sec.• Tray lift motor defective or disconnected • Paper or other obstacle trapped between tray and motor • Pick-up solenoid disconnected or blocked by an obstacleSC504Tray 2 feed error The lift sensor is not activated within 10 seconds after the tray lift motor starts lifting the bottom plate. When the tray lowers, the tray lift sensor does not go off within 1.5 sec.• Tray lift motor defective or disconnected • Paper or other obstacle trapped between tray and motor • Pick-up solenoid disconnected or blocked by an obstacleSC505Tandem tray rear fence motor error The return sensor does not switch on within 10 sec. after the rear fence motor switches on. The HP sensor does not switch on 10 sec. after the rear fence motor switches on. The HP sensor and return sensor switch on at the same time.• Rear fence motor defective or poor connection • Paper or other obstacle interfering with operation of the sensors • Paper or other obstacle trapped between tray and motor • Motor mechanical overload due to obstruction • Return sensor or HP sensor defective or dirtySC510LCT tray error: B473/D350 When the bottom plate is lifted, the upper limit sensor does not come on for 30 sec. When the bottom plate is lowered, the lower limit sensor does not come on for 30 sec. After lift begins, the upper limit sensor does not switch on before the pick-up solenoid switches on. The paper end sensor switches on during lift and the upper limit sensor does not switch on for 2.5 s, and a message prompts user to reset paper.• Tray lift motor harness, disconnected, loose, or defective • Tray lift motor defective • Lift sensor defective or disconnected • Pick-up solenoid defective or disconnected • Paper end sensor defectiveSC515Duplex jogger motor error 1 When the jogger fence moves to the home position, the jogger fence HP sensor does not switch on even after the jogger motor has moved the jogger fence 153.5 mm.• Jogger fence motor defective or poor connection • Paper or other obstacle interfering with operation of the sensors or motor • Return sensor or HP sensor defective, dirty, or disconnected • Paper or other obstacle has jammed mechanism • HP sensor connector disconnected or defective • HP sensor defectiveSC516Duplex jogger motor error 2 When the jogger fence moves from the home position, the jogger fence HP sensor does not turn off even if the jogger motor has moved the jogger fence 153.5 mm.• Jogger fence motor defective or poor connection • Paper or other obstacle interfering with operation of the sensors or motor • Return sensor or HP sensor defective, dirty, or disconnected • Paper or other obstacle has jammed mechanism • HP sensor connector disconnected or defective • HP sensor defectiveSC517LCIT air assist front fan error The front air assist fan is not functioning properly.• Fan harness disconnected or damaged • Fan blocked by an obstruction • Fan damaged, defectiveSC518LCIT air assist rear fan error The rear air assist fan is not functioning properly.• Fan harness disconnected or damaged • Fan blocked by an obstruction • Fan damaged, defectiveSC530Fusing cooling fan error The VBCU did not receive the lock signal 5 seconds after the fusing unit fan switches on.• Fan harness disconnected or damaged • Fan blocked by an obstruction • Fan damagedSC531Fusing Fan Error: Front The lock signal remained HIGH for 5 sec. while the fan at the front of the fusing unit near the heat dissipation fins was operating.• Fan harness disconnected or damaged • Fan blocked by an obstruction • Fan damagedSC532Controller fan error The lock signal remained HIGH for 5 sec. while the fan that cools the printed circuit boards was operating.• Fan harness disconnected or damaged • Fan blocked by an obstruction • Fan damagedSC533Fusing unit suction fan error The lock signal remained HIGH for 5 sec. while the fan that draws air out of the fusing unit was operating.• Fan harness disconnected or damaged • Fan blocked by an obstruction • Fan damagedSC534Duplex unit fan error The lock signal remained HIGH for 5 sec. while the fan that draws air out of the duplex unit was operating.• Fan harness disconnected or damaged • Fan blocked by an obstruction • Fan damagedSC535Development Intake Fan Error The lock signal remained HIGH for 5 sec. while the fan in the Y development unit was operating• Fan harness disconnected or damaged • Fan blocked by an obstruction • Fan damagedSC536Development Intake Fan Error: Y The lock signal remained HIGH for 5 sec. while the fan in the development unit was operating.• Fan harness disconnected or damaged • Fan blocked by an obstruction • Fan damagedCodeDescriptionCausesSC537Development Intake Fan Error: C The lock signal remained HIGH for 5 sec. while the fan in the development unit was operating.• Fan harness disconnected or damaged • Fan blocked by an obstruction • Fan damagedSC538Development Intake Fan Error: M The lock signal remained HIGH for 5 sec. while the fan in the development unit was operating.• Fan harness disconnected or damaged • Fan blocked by an obstruction • Fan damagedSC539Development Intake Fan Error: K The lock signal remained HIGH for 5 sec. while the fan in the development unit was operating.• Fan harness disconnected or damaged • Fan blocked by an obstruction • Fan damagedSC540Fusing/exit motor error Motor operation was detected abnormal at power on.• Check inside the fusing unit for any obstructions • Motor harness loose, broken, defective • Motor or its driver board defectiveSC541Heating roller thermistor [center] error 1 The "floating" [non-contact] thermistor at the center of the heating roller is not operating correction.• Thermistor harness connection loose, disconnected, defective • Thermistor installed incorrectly • Thermistor defectiveSC543Heating roller thermistor [center] error 2 The thermistor at the center of the heating roller detected an abnormally high temperature [over 250°C]• Do SP5810 to cancel the SC fusing code. • TRIAC short, AC drive board defective • VBCU defectiveSC544Heating roller thermistor [center] error 3 The thermistor detected a temperature over 260°C..• Do SP5810 to cancel the SC fusing code. • TRIAC short, AC drive board defective • VBCU defectiveSC545Lamp remains on After hot roller reaches warm-up temperature, the center fusing lamps in the heating roller remained on at full capacity after reaching the warm-up temperature while the hot roller was not rotating.• Do SP5810 to cancel the SC fusing code. • Heating roller thermistor damaged, or out of position • Fusing lamp disconnected, brokenSC546Heating roller thermistor error [side] The temperature measured by the heating roller thermistor does not reach 0°C after 50 sec. and remains over this temperature for 10 readings.• Loose connection of the heating roller thermistor • Defective heating roller thermistorSC547Zero cross error When the main switch is turned on, the machine checks how many zero-cross signals are generated within 500 ms. This SC code is issued if the number of zero-cross signals detected is not within specification. Note: Zero cross signals, generated from an ac power supply, are used to generate a trigger pulses to control the applied power accurately.• Do SP5810 to cancel the SC fusing code. • Electrical noise on the power supply line • Fusing relay damaged, replace the AC drive board.SC549Heating roller thermistor [center]: software error The thermistor detected a temperature over 250°C 10 times within 1 sec.• Do SP5810 to cancel the SC fusing code. • TRIAC short, AC drive board defective • VBCU defectiveSC550Heating roller thermistor 3 [side]: hardware error The thermistor detected a temperature over 260°C.• Do SP5810 to cancel the SC fusing code. • TRIAC short, AC drive board defective • VBCU defectiveSC551Pressure roller thermistor error 1 The temperature measured by the pressure roller thermistor did not reach 0°C after 10 attempts.• Do SP5810 to cancel the SC fusing code. • Loose connection of the pressure roller thermistor • Thermistor positioned incorrectly • Defective pressure roller thermistorSC552Pressure roller thermistor error 2 After the main switch is turned on or the cover is closed, the heating roller temperature did not reach the ready temperature [45°C] within 80 sec. after the fusing lamp switches on. -or- If the fusing unit did not reach the reload temperature after 350 sec.• Pressure roller thermistor harness loose, disconnected, defective • Pressure roller thermistor defectives.SC553Pressure roller thermistor [software] error The thermistor detected a temperature over 220°C 12 times within 1 sec.• Do SP5810 to cancel the SC fusing code. • TRIAC short, AC drive board defective • VBCU defectiveCodeDescriptionCausesSC554Pressure roller thermistor [hardware] error The thermistor detected a temperature over 230°C.• Do SP5810 to cancel the SC fusing code • TRIAC short, AC drive board defective • VBCU defectiveSC555Pressure roller fusing lamp remains on After hot roller reaches warm-up temperature, the pressure roller fusing lamp remained for 300 sec. while the hot roller is not rotating.• Do SP5810 to cancel the SC fusing code. • Thermistor damaged, or out of position • Fusing lamp disconnected, brokenSC556Heating roller fusing lamp error After hot roller reaches warmup temperature, the heating roller fusing lamp [ends] remains for 10 sec. while the hot roller is not rotating.• Thermistor damaged, or out of position • Fusing lamp disconnected, brokenSC557Zero Cross Over Error At power on the fusing relay was detected as defective.• Replace the AC drive board.SC559Three Successive Paper Jams in Fusing Unit This SC only occurs if SP1159 is on, and a jam occurred in the fusing unit for three consecutive sheets of paper. With SP1159 set to "1" the machine operation can be restored only by the service technician. The paper cooling job time sensor detected paper late for 3 counts.• Remove the paper that is jammed in the fusing unit. • Make sure that the fusing unit is clean and has no obstacles in the paper feed path.SC561Heating roller non-contact thermistor error 1 The temperature measured by the heating roller thermistor [non-contact] on the end of the heating roller did not reach the prescribed warm-up temperature within 1 sec.• Loose, broken, damaged connector • Defective thermistorSC562Heating roller non-contact thermistor error 2 After the main switch is turned on or the cover is closed, the heating roller temperature does not reach the ready temperature within 100 sec. after the heater switches on. -or- The heating roller did not reach the ready temperature within 150 sec.• Do SP5810 to cancel the SC fusing code • Defective hot roller thermistor • Heating roller disconnected, defectiveSC563Heating roller non-contact thermistor error 3 The thermistor 2 [of the heating roller] detected a temperature over 250°C 10 times within 1 sec.• Do SP5810 to cancel the SC fusing code. • TRIAC short, AC drive board defective • VBCU defectiveSC564Heating roller non-contact thermistor error 3 The thermistor detected a temperature over 260°C.• Do SP5810 to cancel the SC fusing code. • TRIAC short, AC drive board defective • VBCU defectiveSC565Heating roller fusing lamp on error After fusing belt reached warm-up temperature, the heating roller fusing lamp remained on for 20 sec. while the hot roller was not rotating.• Do SP5810 to cancel the SC fusing code. • Thermistor damaged, or out of position • Fusing lamp disconnected, brokenSC568Pressure roller lift error 1 Even after the leading edge of the paper reached the fusing exit sensor, the pressure roller lift motor did not raise the pressure roller.• Pressure roller lift sensor connection loose, broken, damaged • Clean the pressure roller lift sensor • Pressure roller lift harness loose, broken, damage • Pressure roller lift motor blocked by an obstruction • Pressure roller lift motor defectiveSC569Pressure roller lift error 2 Pressure roller lift motor not operating correctly. [No signal to indicate completion of operation.]• Pressure roller lift sensor connection loose, broken, damaged • Clean the pressure roller lift sensor • Pressure roller lift harness loose, broken, damage • Pressure roller lift motor blocked by an obstruction • Pressure roller lift motor defectiveSC570Development intake fan error Fan motor not operating correctly.• Fan harness loose, broken, defective • Fan overload due to physical obstruction • Fan motor defectiveSC571Ozone exhaust fan [FC] error The fan of the middle ozone filter box not operating correctly.• Fan harness loose, broken, defective • Fan overload due to physical obstruction • Fan motor defectiveSC572Ozone exhaust fan [K] error The fan of the lower ozone filter box not operating correctly.• Fan harness loose, broken, defective • Fan overload due to physical obstruction • Fan motor defectiveCodeDescriptionCausesSC573Ozone intake fan error The ozone filter intake fan not operating correctly.• Fan harness loose, broken, defective • Fan overload due to physical obstruction • Fan motor defectiveSC574Y thermistor error The thermistor near the Y PCU has short circuited or otherwise not operating correctly.• Harness loose, broken, defective • Thermistor defectiveSC599Tray 1 lift motor error An error was detected in the operation of the lift motor for Tray 1 [tandem tray].• Motor harness loose, broken, defective • Motor overload due to an obstruction • Motor defectiveSC620ARDF communication error A BREAK signal occurs after the machine detects the ARDF, or a communication timeout occurs.• ARDF disconnected • VBCU board harness disconnected, defective • VBCU board defective • Spurious noise from the power supply line • ARDF defectiveSC621Mailbox-to-Finisher communication error Communication between the mailbox and finisher is interrupted. An ACK/NCK signal was not received within 100 ms after a data frame is sent and 3 retries failed.• Connection cable between mailbox and finisher disconnected, defective • Finisher main board defective • VBCU defective • PSU defectiveSC622PFB communication error Communication between the VBCU and PFB was interrupted. [Communication status is monitored at 30 ms intervals.]• Connection cable between the VBCU and PFB is disconnected, defective • VBCU defective • PFB defectiveSC624Mailbox-to-copier communication error Communication between the mailbox and copier is interrupted. An ACK/NCK signal was not received within 100 ms after a data frame is sent and 3 retries failed.• Mailbox cable disconnected, defective • Mailbox main board defective • VBCU defective • PSU defectiveSC625VBCU-DTMB [DMC1] communication error Communication between the VBCU and DMC [main] was interrupted. An ACK/NAK signal was not received within 100 ms after a data frame was sent and three retries failed.• Check the DTMB harness connections at the DTMB and VBCU • DTMB defective • PSU defective • VBCU defective • 5V power supply defectiveSC626VBCU-DTMB [DMC2] communication error Communication between the VBCU and DMC [sub] was interrupted. An ACK/NAK signal was not received within 100 ms after a data frame was sent and three retries failed.• Check the DTMB harness connections at the DTMB and VBCU • DTMB defective • VBCU defective • PSU defectiveSC627VBCU-DTMB [TMC] communication error Communication between the VBCU and TMC was interrupted. An ACK/NAK signal was not received within 100 ms after a data frame was sent and three retries failed.• DTMB harness loose, broken, defective • DTMB defective • VBCU defective • PSU defectiveSC687Memory address command error The VBCU does not receive a memory address command from the controller 120 seconds after paper is in the position for registration.• Turn the machine power off/on • Check the controller board connections • Controller defectiveSC701ARDF original pickup operation error Even though the pickup motor is rotating clock-wise, the pickup roller home position sensor cannot detect the position of the pickup roller.• Pickup roller HP sensor harness loose, disconnected, defective • Pickup roller HP sensor defective • Pickup motor harness loose, disconnected, defective • Pickup motor defective • ARDF control board defectiveSC705ARDF bottom plate lift motor The bottom plate HP sensor did not detect the home position of the bottom plate after the bottom plate lift motor switches on and lowers the bottom plate. The bottom plate position sensor does not detect the position of the plate after the lift motor switches on and raises the bottom plate.• ARDF feed motor disconnected, defective • Bottom plate HP sensor disconnected, defective • ARDF main board defectiveSC720Finisher lower transport motor error No encoder pulse signal is detected for the transport motor within the prescribed time. The 1st failure causes an original jam message, and the 2nd failure causes this SC code.• Lower transport motor disconnected, defective • Finisher connection to transport motor loose, defective • Lower transport motor defective • Finisher main board defectiveSC721Finisher jogger motor error [D373/D374, B830] The jogger fences move out of the home position but the HP sensor output does not change within the specified number of pulses. The 1st failure causes an original jam message, and the 2nd failure causes this SC code.• Jogger HP sensor disconnected, defective • Jogger motor disconnected, defective • Jogger motor overloaded due to obstruction • Finisher main board and jogger motor connection loose, defective • Finisher main board defectiveCodeDescriptionCausesSC723Finisher feed-out motor [B830] The stack feed-out belt HP sensor does not activate within the specified time after the stack feedout belt motor turns on. The 1st detection failure causes a jam error, and the 2nd failure causes this SC code.• Stack feed-out HP sensor disconnected, defective • Feed-out motor disconnected, defective • Finisher main board connection to feed out motor disconnected, defective • Motor overload due to obstructionSC724Finisher stapler hammer motor error [B830] Stapling does not finish within the prescribed time after the staple hammer motor turns on. The 1st detection failure causes a jam error, and the 2nd failure causes this SC code.• Stapler hammer motor overloaded due to obstruction, jammed staple, number of sheets exceeds limit for stapling • Stapler hammer motor disconnected, defective • Staple hammer motor HP sensor disconnected, defectiveSC725Finisher exit guide plate motor error [D373/D374, B830, B660] After moving away from the guide plate position sensor, the exit guide is not detected at the home position within the prescribed time. The 1st detection failure causes a jam error, and the 2nd failure causes this SC code.• Guide plate motor disconnected, defective • Guide plate motor overloaded due to obstruction • Guide plate position sensor disconnected, defectiveSC726Shift jogger motor 1 error [D373/D374, B830] The sides fences do not retract within the prescribed time after the shift jogger motor switches on. The 1st detection failure causes a jam error, and the 2nd failure causes this SC code• Shift jogger motor disconnected, defective • Shift jogger motor overloaded due to obstruction • Shift jogger HP sensor disconnected, defectiveSC727Shift jogger motor 2 error [D373/D374] The side fences do not retract within the prescribed time after the shift jogger motor switches on. The 1st detection failure causes a jam error, and the 2nd failure causes this SC code.• Motor harness disconnected, loose, defective • Motor defective • Motor overload • HP defectiveSC728Shift jogger retraction motor error [D373/D374] The side fences do not retract within the prescribed time after the retraction motor switches on. The 1st detection failure causes a jam error, and the 2nd failure causes this SC code.• Motor harness disconnected, loose, defective • Motor defective • Motor overload • HP defectiveSC730Finisher Tray 1 shift motor error [B830] The shift roller HP sensor of the upper tray does not activate within the prescribed time after the shift tray starts to move toward or away from the home position. The 1st detection failure causes a jam error, and the 2nd failure causes this SC code.• Shift tray HP sensor of the upper tray disconnected, defective • Shift tray motor of the upper tray is disconnected, defective • Shift tray motor of the upper tray overloaded due to obstructionSC731Upper Transport Motor Error [Proof Tray]: B830 No encoder pulse signal is detected for the upper transport motor within 600 ms. The 1st failure causes this SC code.• Upper transport motor disconnected, defective • Finisher connection to upper transport motor loose, defective • Upper transport motor blocked by an obstruction • Upper transport motor defective • Finisher main board defectiveSC732Shift Tray Exit Motor: 3K Finisher B830 The shift tray exit motor is not operating.• Motor harness loose, broken, defective • Motor is blocked by an obstruction • Motor defective • Finisher main control board defectiveSC733Stapler Exit Motor: B830 The stapler exit motor is not operating.• Motor harness loose, broken, defective • Motor is blocked by an obstruction • Motor defective • Finisher main control board defectiveSC734Upper Tray Junction Gate Motor: 3K Finisher B830 The upper tray junction gate HP sensor did not detect the gate at the home position within 200 ms after two attempts. -or- The HP sensor twice detected the gate at the home position for more than 200 ms after it was supposed to open.• Junction gate did not arrive at the home position within the specified time • Junction gate did not leave the home position within the specified time