Ricoh B230 Service Manual
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SM 4-41 B230/B237 Trouble shooting No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures) Tray 4 error (Paper Feed Unit or LCT) For the two-tray paper feed unit When the tray lift motor is turned on, the upper limit is not detected within 10 seconds. If this condition occurs three consecutive times, the SC is generated. For the LCT If the upper or lower limit is not detected within 8 seconds when the tray lift motor is turned on to lift up or lower the tray ƒ Defective tray lift motor or connector disconnection ƒ Defective lift sensor or connector disconnection 504-01 B 1. Check the cable connections. 2. Check and/or replace the defective component.
B230/B237 4-42 SM No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures) Tray 4 error (3 Tray Paper Feed Unit) This SC is generated if the following condition occurs 3 consecutive times. For the two-tray paper feed unit ƒ When the tray lowers, the tray lift sensor does not go off within 1.5 sec. For the LCT ƒ If the upper limit does not go off for 1.5 seconds even the tray lift motor turns on to lower the tray after the upper limit has been detected at power on. ƒ Defective tray lift motor or connector disconnection ƒ Defective lift sensor or connector disconnection 504-02 B 1. Check the cable connections. 2. Check and/or replace the defective component. No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures) Fusing/Paper exit fan error The BICU does not receive the lock signal 10 seconds after turning on the fusing/paper exit fan. ƒ Defective fusing/paper exit fan motor or connector disconnection ƒ Defective BICU 530 D 1. Check the connector and/or replace the fusing/paper exit fan motor.
SM 4-43 B230/B237 Trouble shooting No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures) Drive unit fan error The BICU does not receive the lock signal 10 seconds after turning on the drive unit fan motor. ƒ Defective drive unit fan motor 531 D 1. Replace the drive unit fan motor. No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures) Ventilation fan (at the left side of the machine) motor-front/rear error The BICU does not receive the lock signal 10 seconds after turning on the ventilation fan motor-front/rear. ƒ Defective ventilation fan motor-front or rear 532 D 1. Replace the ventilation fan (at the left side of the machine) motor-front or rear. No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures) Toner supply tube fan error The BICU does not receive the lock signal 10 seconds after turning on the toner supply tube fan motor. ƒ Defective toner supply tube fan motor-front or rear 533 D 1. Replace the toner supply tube fan motor.
B230/B237 4-44 SM No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures) Fusing exit sensor fan error The BICU does not receive the lock signal 10 seconds after turning on the fusing fan motor. ƒ Defective fusing fan motor 534 D 1. Replace the fusing exit sensor fan motor (at the front right side of the machine). No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures) PSU fan 1/2 error The BICU does not receive the lock signal 10 seconds after turning on the PSU fan 1/2 motor. ƒ Defective PSU fan motor 1/2 535 D 1. Replace the PSU fan motor 1/2 No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures) Controller fan error The motor lock signal error is detected for 10 seconds after the motor lock signal was first detected. ƒ Defective controller fan motor 536 D 1. Replace the controller fan motor.
SM 4-45 B230/B237 Trouble shooting No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures) Fusing/Paper exit motor error The BICU does not receive the lock signal 10 seconds after turning on the Fusing/Paper exit motor. ƒ Motor overload ƒ Defective fusing/paper exit motor 540 D 1. Replace the fusing/paper exit motor. No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures) Heating roller thermistor error 1 The temperature measured by the heating roller thermistor does not reach 0°C for 6 seconds. ƒ Loose connection of the heating roller thermistor ƒ Defective heating roller thermistor ƒ Defective thermopile 541 A 1. Check if the heating roller thermistor is firmly connected. 2. Replace the heating roller thermistor. 3. Replace the thermopile.
B230/B237 4-46 SM No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures) Heating roller warm-up error 1 ƒ After the main switch is turned on or the cover is closed, the increment of the heating roller temperature per 10 seconds is 30°C or less. If this condition is detected five times consecutively, SC 542 is defined. ƒ The heating roller temperature does not reach 100°C for 15 seconds after the heating lamp on. ƒ The heating roller temperature does not reach the ready temperature while 60 seconds after the heating lamp on. ƒ The center temperature of the heating roller does not reach the ready temperature for 30 seconds after the both edge temperature of the heating roller has reached the ready temperature. ƒ Dirty or defective thermopile ƒ Defective thermistor ƒ Defective heating roller lamp 542 A 1. Check if the heating roller thermistor is firmly connected. 2. Replace the thermistor. 3. Check or replace the thermopile. 4. Replace the heating roller lamp.
SM 4-47 B230/B237 Trouble shooting No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures) Heating roller fusing lamp overheat 1 (software error) The detected fusing temperature stays at 230°C for 1 second. ƒ Defective PSU ƒ Defective IOB ƒ Defective BICU Related SC code: SC 553 543 A 1. Replace the PSU. 2. Replace the IOB. 3. Replace the BICU. No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures) Heating roller fusing lamp overheat 1 (hardware error) During stand-by mode or a print job, the detected heating roller temperature reaches 250 °C. ƒ Defective PSU ƒ Defective IOB ƒ Defective BICU ƒ Defective fusing control system Related SC code: SC 543 544 A 1. Replace the PSU. 2. Replace the IOB. 3. Replace the BICU.
B230/B237 4-48 SM No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures) Heating roller fusing lamp consecutive full power 1 When the fusing unit is not running in the ready condition, the heating roller fusing lamp keeps on full power for 8 seconds. ƒ Broken heating roller thermistor Related SC code: SC 555 545 A 1. Replace the heating roller thermistor. No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures) Zero cross error ƒ The zero cross signal is detected three times even though the heater relay is off when turning on the main power. ƒ The zero cross signal is not detected for 2 seconds even though the heater relay is on after turning on the main power or closing the front door. ƒ The detection error occurs twice or more in the 11 zero cross signal detections. This error is defined when the detected zero cross signal is less than 45. ƒ Defective fusing lamp relay ƒ Defective fusing lamp relay circuit ƒ Unstable power supply 547 D 1. Check the power supply source. 2. Replace the PSU
SM 4-49 B230/B237 Trouble shooting No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures) Pressure roller thermistor error The temperature measured by the pressure roller thermistor does not reach 0 °C for 6 seconds. ƒ Loose connection of pressure roller thermistor ƒ Defective thermopile ƒ Defective pressure roller thermistor Related SC code: SC 541 551 A 1. Check that the pressure roller thermistor is firmly connected. 2. Replace the thermopile. 3. Replace the pressure roller thermistor. No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures) Pressure roller warm-up error After the main switch is turned on or the door is closed, the pressure roller temperature does not reach the ready temperature within 70 seconds during fusing unit warm-up. ƒ Pressure roller fusing lamp broken Related SC code: SC 542 552 A 1. Check if the pressure roller thermistor is firmly connected. 2. Replace the pressure roller fusing lamp.
B230/B237 4-50 SM No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures) Pressure roller fusing lamp overheat (software error) The detected pressure roller temperature stays at 230°C or more for 1 second. ƒ Defective PSU ƒ Defective IOB ƒ Defective BICU Related SC code: SC 543 553 A 1. Replace the pressure roller thermistor. 2. Replace the PSU. 3. Replace the IOB. 4. Replace the BICU. No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures) Pressure roller fusing lamp overheat (hardware error) The pressure roller thermistor detects 250°C or more. ƒ Defective PSU ƒ Defective IOB ƒ Defective BICU ƒ Defective fusing control system 554 A 1. Replace the pressure roller thermistor. 2. Replace the PSU. 3. Replace the IOB. 4. Replace the BICU.