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Ricoh Mp C3000 Service Manual

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SM 4-19 B230/B237/D042 
Trouble 
shooting 
 
No. Type Details (Symptom, Possible C ause, Troubleshooting Procedures) 
Polygon motor error 3: XSCRDY signal error 
The SCRDY_N signal goes HIGH (inac tive) while the laser diode is 
firing. 
ƒ  Disconnected or defective harness to  polygon motor driver board   
ƒ Defective polygon motor   
ƒ Defective polygon motor driver board 
204 D 
1.  Check or replace the harness. 
2.  Replace the polygon motor. 
 
No. Type Details (Symptom, Possible C ause, Troubleshooting Procedures) 
210  C  Laser synchronizing detec tion error: end position [K] 
211  C  Laser synchronizing detection error: end position [Y] 
212  C  Laser synchronizing detection error: end position [M] 
213  C  Laser synchronizing detection error: end position [C] 
  The laser synchronizing detection signal 
for the end position of LDB [K], 
[Y], [M], [C] is not detected for  one second after the LDB unit turned on 
when detecting the main scan magnification. 
   
ƒ
 Disconnected or defective harness  to synchronizing detector for 
end position 
ƒ  Defective synchronizing detector board 
ƒ Defective LD board or driver 
ƒ Defective BICU 
    1.  Replace the harness of the LD board. 
2.  Replace the laser optics housing unit. 
3. Replace the BICU.
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    							B230/B237/D042 4-20 SM 
No. Type Details (Symptom, Possible Cause, Troubleshooting 
Procedures) 
220 D  Laser synchronizing detecti on error: start position [K] 
222 D  Laser synchronizing detecti on error: start position [Y] 
224 D  Laser synchronizing detecti on error: start position [M] 
226 D  Laser synchronizing detecti on error: start position [C] 
  The laser synchronizing detection 
signal for the start position 
of the LDB [K], [Y], [M], [C] is  not output for two seconds after 
LDB unit turns on while the polygon motor is rotating 
normally. 
   
ƒ
 Disconnected cable from  the laser synchronizing 
detection unit or defective connection 
ƒ  Defective laser synchronizing detector 
ƒ Defective LDB   
ƒ Defective BICU 
    1.  Check the connectors. 
2.  Replace the laser-s ynchronizing detector. 
3. Replace the LDB. 
4. Replace the BICU.
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SM 4-21 B230/B237/D042 
Trouble 
shooting 
 
No. Type Details (Symptom, Possible C ause, Troubleshooting Procedures) 
FGATE ON error: Bk 
The PFGATE ON signal does not as sert within 5 seconds after 
processing the image in normal job or MUSIC for start position [K]. 
ƒ  Defective ASIC  (Lupus) 
ƒ Poor connection between controller and BICU. 
ƒ Defective BICU 
230 D 
1.  Check the connection between the controller board and the BICU. 
2. Replace the BICU. 
3. Replace the c ontroller board. 
 
No. Type Details (Symptom, Possible C ause, Troubleshooting Procedures) 
FGATE OFF error: Bk 
ƒ The PFGATE ON signal still asserts within 5 seconds after 
processing the image in normal job or MUSIC for end position [K]. 
ƒ The PFGATE ON signal still asserts when the next job starts. 
231 D 
See SC 230 for troubleshooting details. 
 
No. Type Details (Symptom, Possible C ause, Troubleshooting Procedures) 
FGATE ON error: Y 
The PFGATE ON signal does not as sert within 5 seconds after 
processing the image in normal job or MUSIC for start position [Y]. 232 D 
See SC 230 for troubleshooting details.
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    							B230/B237/D042 4-22 SM 
 
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures) 
FGATE OFF error: Y 
ƒ The PFGATE ON signal still asserts within 5 seconds after 
processing the image in normal job or MUSIC for end position [Y]. 
ƒ The PFGATE ON signal still asserts when the next job starts. 
233 D 
See SC 230 for troubleshooting details. 
 
No. Type Details (Symptom, Possible C ause, Troubleshooting Procedures) 
FGATE ON error: M 
The PFGATE ON signal does not as sert within 5 seconds after 
processing the image in normal job or MUSIC for start position [M]. 234 D 
See SC 230 for troubleshooting details. 
 
No. Type Details (Symptom, Possible C ause, Troubleshooting Procedures) 
FGATE OFF error: M 
ƒ The PFGATE ON signal still asserts within 5 seconds after 
processing the image in normal job or MUSIC for end position [M]. 
ƒ The PFGATE ON signal still asserts when the next job starts. 
235 D 
See SC 230 for troubleshooting details. 
 
No. Type Details (Symptom, Possible C ause, Troubleshooting Procedures) 
FGATE ON error: C 
The PFGATE ON signal does not as sert within 5 seconds after 
processing the image in normal job or MUSIC for start position [C]. 236 D 
See SC 230 for troubleshooting details.
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SM 4-23 B230/B237/D042 
Trouble 
shooting 
No. Type Details (Symptom, Possible C ause, Troubleshooting Procedures) 
FGATE OFF error: C 
ƒ The PFGATE ON signal still asserts within 5 seconds after 
processing the image in normal job or MUSIC for end position [C]. 
ƒ The PFGATE ON signal still asserts when the next job starts. 
237 D 
See SC 230 for troubleshooting details. 
 
No. Type Details (Symptom, Possible C ause, Troubleshooting Procedures) 
240 C  LD error: Bk 
241 C LD  error: Y 
242  C  LD error: M 
243 C  LD error: C 
   The BICU detects LDB error a few times consecutively when LDB 
unit turns on after LDB initialization. 
  ƒ
 Worn-out LD 
ƒ Disconnected or broken  harness of the LD 
   1.  Replace the harness of the LD. 
2.  Replace the laser optics housing unit. 
3. Replace the BICU.
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    							B230/B237/D042 4-24 SM 
 
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures) 
Line position adjustment (MUSIC) error 
Line position adjustment fails  four consecutive times. 
ƒ Pattern sampling error ( insufficient image density ) 
ƒ Defective ID sensors for t he line position adjustment 
ƒ Defective image transfer belt unit 
ƒ Defective PCU(s) 
ƒ Defective laser optics housing unit 
285 D 
1.  Do the recovery procedure fo r SC285 (see Laser Optics Housing 
Unit in Replacement & Adjustment). 
2.  Check and reinstall the image transfer belt unit and PCUs. 
3.  Check if each toner bottle has enough toner. 
4.  Replace the ID sensor. 
5.  Replace the image transfer belt unit. 
6. Replace the PCU(s). 
7.  Replace the laser optics housing unit.
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SM 4-25 B230/B237/D042 
Trouble 
shooting 
 
No. Type Details (Symptom, Possible C ause, Troubleshooting Procedures) 
Shutter sensor time over error: Close 
The shutter close sens or does not detect ON for 2000msec after the 
shutter motor turns on. 
ƒ  Defective shutter close sensor 
ƒ Disconnected or broken harness 
ƒ Defective shutter motor 
ƒ Defective shutter 
ƒ Shutter motor overload 
ƒ Defective IOB 
290 D 
1.  Check or replace the harness. 
2.  Replace the shutter on  the laser optics housing unit. 
3.  Replace the shutter motor. 
4. Replace the shu tter close sensor. 
5. Replace the IOB. 
 
No. Type Details (Symptom, Possible C ause, Troubleshooting Procedures) 
Shutter overrun error 1: Close 
The shutter close sensor loses the ON signal after the shutter was 
closed. 
ƒ Defective motor 
ƒ Change of load to shutter motor 
291 C 
1.  Replace the shutter on  the laser optics housing unit.
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    							B230/B237/D042 4-26 SM 
 
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures) 
Shutter overrun error 2: Close 
The shutter close sens or detects ON after SC 291 has occurred. 
ƒ Defective motor 
ƒ Change of load to shutter motor 
292 D 
1.  Replace the shutter on  the laser optics housing unit.
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SM 4-27 B230/B237/D042 
Trouble 
shooting 
 
No. Type Details (Symptom, Possible C ause, Troubleshooting Procedures) 
Shutter sensor time over error: Open 
The shutter open sensor does not detect ON for 2000msec after the 
shutter motor turns on.   
ƒ Defective shutter close sensor 
ƒ Disconnected or broken harness 
ƒ Defective shutter motor 
ƒ Defective shutter 
ƒ Shutter motor overload 
ƒ Defective IOB 
293 D 
1.  Check or replace the harness. 
2.  Replace the shutter on  the laser optics housing unit. 
3.  Replace the shutter motor. 
4. Replace the shu tter close sensor. 
5. Replace the IOB. 
 
No. Type Details (Symptom, Possible C ause, Troubleshooting Procedures) 
Shutter overrun error 1: Open 
The shutter open sensor loses the ON signal after the shutter was 
closed. 
ƒ Defective motor 
ƒ Change of load to shutter motor 
294 C 
1.  Replace the shutter on  the laser optics housing unit.
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    							B230/B237/D042 4-28 SM 
 
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures) 
Shutter overrun error 2: Open 
The shutter open sensor detects ON after SC 291 has occurred. 
ƒ Defective motor 
ƒ Change of load to shutter motor 
295 D 
1.  Replace the shutter on  the laser optics housing unit. 
 
No. Type Details (Symptom, Possible C ause, Troubleshooting Procedures) 
Shutter open/close sensor error 
Both shutter open sensor and close sensor detect ON at the same 
time. 
ƒ Broken harness(es) of the s hutter open/close sensors 
296 D 
1.  Replace the shutter on  the laser optics housing unit.
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