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Mã lỗi máy photocopy A0 Ricoh Aficio 470W

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Mã lỗi	Mô tả lỗi	Nguyên nhân
SC192	AMDP download error The AMDP ROM enable signal could not be detected within 8 ms after program download to the AMDP started. Program download failed three times consecutively.	• AMDP program defective. • IC card defective • IPU defective
SC302	Charge Corona Output Error Charge corona feedback voltage of less than 1V was detected for more than 200 s.	• Charge power pack is defective. • High voltage cable is defective. • Poor connection of the power pack connector. • Dirty charge corona unit caused leakage.
SC303	Charge corona wire cleaner error 1) Wire cleaner motor feedback voltage of less than 0.1 V was detected for more than 1s. 2) Corona wire cleaning did not complete within 80 s. 3) Charge wire cleaner did not return to the home position. 4) Cleaner does not move from the home position.	Wire cleaner motor connector disconnected. Wire cleaner motor connector disconnected. Wire cleaner motor is operating without a load. Wire cleaner stops due to an overload. Wire cleaner motor drive circuit malfunction.
SC306	Charge grid output error Control PWM duty value is higher than 1% (FB less than 1V) for more than 200 ms (a grid current leak).	• CBG power pack is defective. • High voltage cable is defective. • Poor connection of the power pack connector. • Dirty charge corona unit causing leakage
SC330	Writing ASIC signal error At power on, the stamp function could not execute successfully twice.	• SP5137 setting incorrect • Stamp board defective • Poor stamp board connection
SC353	ID sensor malfunction SC353-1 Vsp is 0V or more than 2.5 V SC353-2 Vsg is 0V or more than 2.5 V SC353-3 Edge pattern voltage (2.5 V) cannot be detected SC353-4 LED drive current (PWM value) is over 1000 or fixed at 0. SC353-5 Vsg cannot be adjusted to 4 ±0.2V within 20 s.	• ID sensor defective • ID sensor connector defective • IOB malfunction • CBG power pack defective • Dirty ID sensor • VDB defective • LPH defective
SC360	Hard disk connection error The connection of the optional HDDs could not be confirmed.	• Hard disk connectors disconnected. • Hard disk defective. • IPU board defective
SC361	Hard disk read error
SC362	IMAC (Image Memory Access Controller) error At the IPU, an error was detected during data compression with the GAIMAC ASIC or during data transfer to memory.	• Software error, IPU defective. Update the firmware. If this does not solve the problem, replace the IPU board.
SC365	Image processing parameter error An image processing data file not stored in the memory was required when writing started due to software error.	Software error. Replace software (all three firmware modules).
SC391	Development bias error A development bias feedback voltage of less than 0.25V was detected for more than 200 ms while the PWM duty value was more than 1% (development bias leak).	• Bias power pack defective • Bias cable defective • Poor bias cable connection • Bias leak
SC401	Transfer corona leak error A transfer corona feedback voltage of less than 0.25V was detected for more than 200 ms.	• T&S power pack defective. • Transfer corona cable defective. • Poor transfer corona cable connection. • Dirty T&S corona unit caused leak
SC411	DC separation corona current leak A dc separation feedback voltage of less than 0.5V was detected after more than 200 ms while the PWM duty value was more than 17%.	• T&S power pack defective. • Paper separation current cable defective. • Poor paper separation current cable connection.
SC440	Drum drive motor lock The motor lock signal is on longer than 5 s while the drum drive motor is on.	• Drive mechanism overload. • Motor defective.
SC441	Development drive motor lock SC441-1 Development drive motor lock signal is low longer than 5 s when the development motor stops. SC441-2 Development drive motor lock signal is high longer than 5 s when the development motor rotates.	• Drive mechanism overload • Motor defective • Motor disconnected
SC506	Registration motor lock The registration motor lock signal is high longer than 5 s during operation.	• Drive mechanism overload. • Motor defective.
SC508	Cutter 1 home position error 1 Both left and right home position switches of the upper cutter were on just after the main switch was turned on, or just after the upper feed tray was opened and closed.	• Right or left home position switch defective.
SC509	Cutter 1 home position error 2 SC509-1 Left home position switch stays on 300 ms after the cutter starts moving from left to right. SC509-2 Right home position switch stays on 300 ms after the cutter starts moving from right to left.	• Cutter motor cable disconnected • Cutter motor overload • Motor defective
SC510	Cutter 1 home position error 3 SC510-1 Right home position switch stays off 1 s after the cutter starts moving from left to right. SC510-2 Left home position switch stays off 1 s after the cutter starts moving from right to left.	• Cutter motor cable disconnected • Cutter motor overload • Motor defective
SC511	Cutter 2 home position error 1 Both left and right home position switches of the lower cutter were on just after the main switch was turned on, or just after the lower feed tray was opened and closed.	• Right or left home position switch defective.
SC512	Cutter 2 home position error 2 SC512-1 Left home position switch stays on 300 ms after the cutter starts moving from left to right. SC512-2 Right home position switch stays on 300 ms after the cutter starts moving from right to left.	• Cutter motor cable disconnected • Cutter motor overload • Motor defective
SC513	Cutter 2 home position error 3 SC513-1 The right home position switch stays off 1 s after the cutter starts moving from left to right. SC513-2 The left home position switch stays off 1 s after the cutter starts moving from right to left.	• Cutter motor cable disconnected • Cutter motor overload • Motor defective
SC541	Fusing thermistor open The fusing temperature detected by the thermistor was below 7 °C for 10 s.	• Fusing thermistor defective • Thermistor cable disconnected
SC542	Fusing temperature warm-up error SC542-1 After switching on the machine, or after opening and closing the machine, during warmup the hot roller did not attain the ready temperature within 5 minutes. SC542-2 After the ready temperature, the hot roller did not reach the target control temperature within 5 minutes.	• Fusing lamp defective • IOB board defective • MCU board defective
SC543	Fusing overheat error 1 (software) A fusing temperature of over 215 °C (419°F) was detected for 5 s	• IOB board defective • MCU board defective • PSU defective
SC544	Fusing overheat error 2 (hardware) The BICU detects an overhead error even if the software overheat protection does not work.	• IOB board defective • MCU board defective • PSU board defective
SC545	Fusing lamp overheat error 3 After reaching the ready temperature, the hot roller does not rotate, and the fusing lamp stays on at full power for 50 s.	• Hot roller thermistor not positioned correctly
SC546	Unstable fusing temperature SC546-1 Fusing temperature rapidly fluctuating. Temperature fluctuates greater than 20°C (68°C) at 1 second intervals. SC546 -2 Fusing temperature fluctuating over a long interval. Temperature fluctuates 20°C (68°C) more than 3 times during 60 s interval.	• Poor thermistor connection
SC547	Zero-cross signal malfunction SC547-1 Abnormal mains frequency was detected more than 10 times. SC547-2 No zero-cross signal detected for 1 second. SC547-3 No zero-cross signal detected for 2.5 s after the main switch is turned on.	• Electrical noise on the power line. • PSU defective.
SC549	Pressure roller thermistor abnormal SC547-1 During fusing motor rotation, pressure roller temperature detected lower than 7°C (44.6°F) for 5 s. SC547-2 Pressure roller temperature detected higher than 235°C (455°F) for 5 s.	• SC547-1: Thermistor disconnected or connector damaged. • SC547-2: Thermistor shorted or connector damaged.
SC550	Left fusing pressure motor home position error 1 The left pressure motor did not return to home position 9 s after the left pressure motor started.	• Motor drive mechanism overload. • Motor defective. • Pressure home position sensor defective.
SC551	Left fusing pressure motor home position error 2 The left pressure motor was still at the home position 1.5 s after the start signal turned on.	• Motor drive mechanism overloaded. • Motor defective. • Pressure home position sensor defective or disconnected.
SC552	Right fusing pressure motor home position error 1 The right pressure motor did not return to home position 9 s after the right pressure motor started.	• Motor drive mechanism overloaded. • Motor defective. • Pressure home position sensor defective.
SC553	Right fusing pressure motor home position error 2 The right pressure motor was still at the home position 1.5 s after the start signal turned on.	• Motor drive mechanism overloaded. • Motor defective. • Pressure home position sensor defective or disconnected.
SC554	Fusing drive motor error The fusing drive motor lock signal stayed on (remained HIGH) for 5 s.	• Fusing motor drive mechanism overloaded. • Motor defective.
SC600	Operation panel/MCU communication error The operation panel and MCU are not communicating.	• Loose harness • MCU defective
SC601	IPU/CIS communication error The IPU and CIS are not communicating.	• MCU defective • Loose harness
SC602	Communication error between IPU and HDC The IPU and HDC (hard disk controller chip mounted on the IPU) are not communicating.	• IPU board defective • HDC mounted on IPU incorrectly
SC603	IPU/AMDP communication error The IPU and AMDP are not communicating after 6 AMDP data transmissions.	• IPU defective.
SC605	BICU/MCU error The BICU and MCU are not communicating due to a serial data communication error or a serial data receive buffer overflow.	• MCU defective
SC951	F gate signal error The paper is ejected with no image (or a partial image) because the FGATE signal that triggers image writing failed to switch off after 60 s.	• Software defective. Replace the software (all three firmware modules). • MCU defective • IPU defective
SC953	Scanner image setting error The IPU did not issue the signal required for the scanner to start image processing.	• Software defective. Replace the software (all three firmware modules).
SC954	The IPU did not issue the signal required to start image rocessing for the printing mode.	• Software defective. Replace the software (all three firmware modules).
SC955	Memory Setting Error Settings required for memory to start image processing are not sent from the IPU.	• Software defective. Replace the software (all three firmware modules).
SC964	Scanner start signal error The scanner receives another start signal after scanning has already started.	• Software defective. Replace the software (all three firmware modules).
SC965	Print start signal error The printer received another print start signal after print job has already started.	• Software defective. Replace the software (all three firmware modules).
SC980	HDD access error Incorrect parameter sent to the HDC (hard disk controller chip mounted on the IPU) from the BICU.	• Software defective. Replace the software (all three firmware modules). • MCU defective
SC981	HDD response error No response from the hard disk within 5 s after the BICU chip on the main board sent read/write commands to the HDD controller.	• Software defective. Replace the software (all three firmware modules). • HDD defective or poor connection due to vibration
SC982	MSU error MSU (Memory System Unit) memory configuration does not meet specifications.	Hard disk capacity is insufficient (does not meet specification).
SC984	IMAC initialization failure A hard disk was accessed when the context table RAM of the IMAC (Image Memory Access Controller) is initialized at the beginning of the copy cycle.	• Software defective. Replace the software (all three firmware modules).
SC997	HDD Read Error Memory could not be swapped during long original scanning.	• Software defective. Replace the software (all three firmware modules).
SC998	NVRAM Error An error occurred in the NVRAM.	• NVRAM not installed correctly • MCU board defective