Ricoh B230 Service Manual

 
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...

 
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...

 
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...

 
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...

 
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...

 
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...

 
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)...

 
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...

 
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...

 
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...