This is a compilation of all error codes for the Ricoh Aficio 240W A0 photocopier . To ensure accuracy, we have kept the original English text; we apologize for any inconvenience this may cause.
| Error code | Error description | Reason |
| 300 | Charge Corona Output Error The charge-corona feedback voltage was less than 1 V for more than 200 ms. |
Replace the charge corona unit. • Replace the high voltage cable. • Clean or replace the corona wire. • Check the CGB power pack fuse, connection. • Replace the CGB power pack. |
| 305 | Charge Corona Wire Cleaner Error The charge wire cleaner did not a) come from the home position within 5 s, or b) did not go back to the home position in 3.7 s or less. This is because of wire cleaner overload. |
• Switch the main power switch off/on. • Check the wire cleaning unit for a blockage or broken parts. |
| 330 | Writing ASIC Signal Error At power on, the stamp function could not start. |
• Check the settings of SP5137. If the stamp option is installed, this SP must be enabled. If the stamp option is not installed, this SP must be disabled. • Check the stamp board connections. • Replace the defective stamp board. |
| 360 | Hard Disk Connection Error The machine could not detect the HDD connection. |
• Check the connections between the HDD and hard disk controller. • Check the HDD power connector. • Replace the HDD. • Replace the MCU. |
| 361 | Hard Disk Read Errors | • By SP4960-1 (HDD Media Check). • Do SP4906 003 to format the HDD. • If formatting the HDD fails, replace the HDD. |
| 362 | IMAC (Image Memory Access Controller) error During data transfer in memory at the IPU, an error occurred during data compression with ASIC (IMAC). The ASIC controls data compression. |
• Update the firmware. • If the firmware update does not stop the problem, replace the IPU board. • Update all software modules if this problem continues. |
| 380 | MSU Output Error Just after the machine was switched on, it could not detect that the MSU (Memory Super-charger Unit) was set. |
• Replace the IPU. |
| 392 | Development Bias Error The development bias feedback voltage was less than 0.5 V for longer than 200 ms while the PWM duty value was more than 5% (indicating a development bias leak). |
• Check the MCU connectors. • Check the harness on the MCU for damage. • Replace the high voltage cable. • Replace the CGB power pack. |
| 400 | ID Sensor Auto Adjustment Error Vsg did not get to 4±0.2 V when the ID sensor was adjusted automatically in the SP mode. |
• Clean the ID sensor. • Check the ID sensor harness and connector. • Replace the ID sensor. • Replace the MCU. • Replace the development unit. • Replace the CGB power pack. |
| 401 | ID Sensor Vsg Error The Vsg level was detected lower than 2.5 V twice. |
• Clean the ID sensor. • Check the ID sensor harness and connector. • Replace the ID sensor. • Replace the MCU. • Replace the development unit. • Replace the CGB power pack. |
| 402 | ID Sensor Vsp Error The Vsp level was detected at 0 V or more than 2.5 V for 2 consecutive copies. |
• Under the left upper cover, make sure the hex screw of the main drive gear of the drum is tight. • Clean the ID sensor. • Check the ID sensor harness and connector. • Replace the ID sensor. • Replace the MCU. • Replace the development unit. • Replace the CGB power pack. |
| 440 | Transfer Output Error A high voltage feedback voltage of less than 1.0 V was detected for 200 ms. |
• Check and replace the high voltage cable if necessary. • Replace the CGB power pack. |
| 460-1 | DC Separation Corona Output Error A dc separation feedback voltage of less than 1.0 V was detected after more than 200 ms while the PWM duty value was more than 15%. |
• Check and replace the high voltage cable if necessary. • Replace the CGB power pack. |
| 508 | Cutter Error The left and right cutter HP sensors stayed on or off more than 2 seconds. |
• Check the connections of the HP sensors on the left and right side. • Replace the HP sensors. |
| 520 | Main Motor Error The lock signal goes LOW after the motor starts and gets to the set speed. If the main motor lock signal stays HIGH for 5 seconds during motor operation, the motor stops because of overloading. |
• Check that the motor drive path is not overloaded. • Replace the motor harness. • Replace the motor. |
| 521 | Drum Motor Error The lock signal goes LOW after the motor starts and gets to the set speed. If the drum motor lock signal stays HIGH for 5 seconds during motor operation, the motor stops because of overloading. |
• Check that the motor drive path is not overloaded. • Replace the motor. |
| 522 | Fusing Unit Drive Motor Error The lock signal goes LOW after the motor starts and gets to the set speed. If the fusing motor lock signal stayed HIGH for 5 seconds during motor operation, the motor stopped because of overloading. |
• Check that the motor drive path is not overloaded. • Replace the motor. |
| 530 | Fusing Unit Ventilation Fan Error The lock signal goes LOW after the motor starts and gets to the set speed. If the fan motor lock signal stayed HIGH for 5 seconds during motor operation, the motor stopped because of overloading. |
• Check that the motor is not overloaded. • Replace the motor. |
| 541-1 | Fusing Thermistor Error 1 • The measured temperature of the hot roller stayed below 7C (44.6F) for 60 seconds after the machine was switched on. -or- • During machine operation the hot roller temperature fell to and stayed at 7C (44.6F) for 40 seconds. |
• Make sure that the thermistor is set correctly. • Make sure that the thermistor cable is connected. • Replace the thermistor. |
| 541-2 | Fusing Thermistor Error 2 The analog voltage input from the hot roller temperature was less than 2 V for three measurements. The thermistor has short-circuited. |
Replace the thermistor. |
| 542 | Fusing Temperature Warm-up Error The hot roller did not get to the ready temperature within 4 minutes 30 sec.: • After the machine was switched on. • After the upper unit or roll feeder drawer was closed. • During warm-up. |
• Check the fusing lamp connections. • Replace the fusing lamp. • Replace the MCU. • Check the hot roller thermistor. Make sure it is straight and does not touch the hot roller. |
| 543 | Fusing Lamp Overheated: Error 1 (Software) A fusing temperature more than 230 °C (446°F) was detected 3 times (measured at 180 ms intervals). Note: A shorted triac or other problem could cause the fusing lamp to stay on. |
Replace the MCU. |
| 544 | Fusing Lamp Overheated: Error 2 (Hardware) A short circuit in the triac on the MCU caused the fusing temperature control to stop or operate incorrectly. A special circuit on the MCU monitors the temperature of the board. The temperature around the board was more than 235C. 544-1 Latch Signal On (50 ms) 544-2 Signal On (1 s) |
Replace the MCU. |
| 545 | Fusing Lamp Overheated: Error 3 After it got to the ready temperature, the fusing lamp stayed on at full power for 50 seconds while the hot roller did not turn. |
Correct the position of the thermistor on the hot roller. Replace the fusing lamp harness. Replace the MCU. |
| 546-1 | Fusing Temperature Error 1 Fusing temperature goes up and down quickly, more than 20°C (68°C) at 1 sec. intervals. intervals. |
• Check the thermistor connection. • Check the fusing lamp connections. • Replace the MCU. |
| 546-2 | Fusing Temperature Error 2 Temperature goes up and down during a long interval, by 20°C (68°C) more than 3 times during a 60 sec. interval. interval. |
• Check the thermistor connection. • Check the fusing lamp connections. • Replace the MCU. |
| 547 | Zero-Cross Signal Errors The zero-cross signal from the ac power supply makes a trigger pulse to control the supply of power. It automatically detects 50/60 Hz. |
• Check that the frequency of the power supply to the machine is correct. • Replace the PSU. • Replace the MCU |
| 548 | Fusing Lamps Disconnected The fusing temperature did not get to 100°C within 2 min. after the machine was switched on. |
• Check the fusing lamp harness connections. • Replace the fusing lamps. • Replace the AC drive board. |
| 549-1 | Pressure Roller Thermistor Error 1 Fusing temperature control detected that the analog voltage output by the pressure roller thermistor was more than 5V. The pressure roller thermistor is disconnected. |
• Check the thermistor connection. • Replace the thermistor. • Replace the MCU. |
| 549-2 | Pressure Roller Thermistor Error 2 (2 times at 1.5 sec. intervals) that the analog voltage output by the pressure roller thermistor was less than 0.2 V. The pressure roller thermistor has short-circuited. |
• Check the thermistor connection. • Replace the thermistor. • Replace the MCU. |
| 601 | Communication Error Between IPU and CIS A break signal was detected after the communication connection. A communication error was sent back 3 times. |
• Update the software. • Replace the MCU. |
| 605 | Communication Error Between Controller and ECU One of these problems occurred: • Serial communication error • Serial data overflowed in the receive data buffer. |
Replace the MCU. |
| 630 | CSS Communication Error (Japan Only) The machine sent a report on its condition, but CSS detected an error. There is a problem on the telephone line between the machine location and the CSS center. |
No action necessary. |
| 632 | MK1 Communication Error 1: No Answer to ACK The optional counter device did not send an ACK signal 100 ms after one frame was sent, even after the same data was sent 3 times. |
• Check the serial line harnesses and connectors at the counter device, the relay board, and the controller. • Replace the counter device. • Replace the MCU. |
| 633 | MK1 Communication Error 2: BREAK Received A LOW break signal was received while the optional counter device was connected to the communication circuit. |
• Check the serial line harnesses and connectors at the counter device, the relay board, and the controller. • Replace the counter device. • Replace the MCU. |
| 900 | Electrical Total Counter The electrical counter is not connected. |
• Replace NVRAM chips. |
| 901 | Mechanical Total Counter The mechanical counter is not connected. |
• Check the mechanical counter connection. • Replace the mechanical counter. |
| 980 | HDD Access Memory | • Update the MCU firmware |
| 981 | HDD Response Errors | • Check the HDD Connectors. • Check the HDD and make sure it is not loose. • Update the MCU firmware. • Replace the HDD. |
| 991 | Software Error 1: SCU There was an unusual operation by the software because of: • An incorrect argument in the program. • An incorrect internal parameter. • Work memory is not sufficient. • An error occurred that could not be detected by other SC codes. |
• Set the main power switch to .off. then to .on.. • Go into the SP mode. • Input .0. for SP7405 to display the data for SC991, which includes the software file name, line number, and variable. |
| 992 | Software Error 2: ECU There was an unusual operation by the software because of: • An incorrect argument in the program. • An incorrect internal parameter. • Work memory is not sufficient. • An error occurred that could not be detected by other SC codes. |
• Set the main power switch to .off. then to .on.. • Go into the SP mode. • Input .0. for SP7405 to display the data for SC992, which includes the software file name, line number, and variable. |