Ricoh Mp C3000 Service Manual

							 
SM 4-29 B230/B237/D042 
Trouble 
shooting 
 
No. Type Details (Symptom, Possible C ause, Troubleshooting Procedures) 
300 D  AC charge output error [K] 
301  D  AC charge output error [M] 
302 D  AC charge output error [C] 
303 D  AC charge output error [Y] 
   The measured voltage is not proper when BICU measures the 
charge output for each color. 
  
ƒ
 Disconnected or brok en high voltage cable 
ƒ Defective or not installed PCU 
ƒ Defective high voltage power supply 
    1.  Check or replace the connectors. 
2.  Replace the PCU for black. 
3.  Replace the high voltage power supply. 
 
No. Type Details (Symptom, Possible C ause, Troubleshooting Procedures) 
Color development motor error 
The motor LOCK signal is not detected for more than two seconds 
while the motor START signal is on. 
ƒ Color development motor slip due to an increase in the torque 325 D 
1.  Adjust the torque properly  by replacing or cleaning the 
development unit. 
2.  Replace the color development motor if the load torque is normal. 
  
						

							B230/B237/D042 4-30 SM 
 
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures) 
360 D  TD sensor (Vt high) error 1: K 
361 D  TD sensor (Vt high) error 1: M 
362 D  TD sensor (Vt high) error 1: C 
363  D  TD sensor (Vt high) error 1: Y 
  
ƒ The Vt value of the black, magent a, cyan, or yellow TD sensor 
exceeds the specifi ed value (default: 4.7V) with SP3020-002 
for twenty counts. 
ƒ  The [Vt - Vtref] value of the black, magenta, cyan, or yellow TD 
sensor exceeds the  specified value (default: 5.0V) with 
SP3020-001. 
   
ƒ
 Black, magenta, cyan, or ye llow TD sensor disconnected 
ƒ Harness between TD sensor and PCU defective 
ƒ Defective TD sensor. 
    1.  Check the black, magenta, cyan, or yellow TD sensor 
connector and harness between t he TD sensor and PCU for 
damage. 
2.  Check the drawer connector. 
3. Replace the  defective PCU.   
  
						

							 
SM 4-31 B230/B237/D042 
Trouble 
shooting 
 
No. Ty p e  Details (Symptom, Possible C ause, Troubleshooting Procedures) 
364 D  TD sensor (Vt high) error 2: K 
365  D  TD sensor (Vt high) error 2: M 
366 D  TD sensor (Vt high) error 2: C 
367 D  TD sensor (Vt high) error 2: Y 
   The Vt value of the black, magenta,
 cyan, or yellow TD sensor is 
below the specified value with  SP3020-004 (default: 0.5V) for 10 
counts. 
   
ƒ
 TD sensor harness disconnec ted, loose, defective 
ƒ A drawer connector disconnec ted, loose, defective 
ƒ TD sensor defective 
   
1.  Check the black, magenta, 
cyan, or yellow TD sensor 
connector and harness between t he TD sensor and PCU for 
damage. 
2.  Check the drawer connector. 
3. Replace the  defective PCU. 
 
No. Ty p e  Details (Symptom, Possible C ause, Troubleshooting Procedures) 
372  D  TD sensor adjustment error: K 
373  D  TD sensor adjustment error: M 
374  D  TD sensor adjustment error: C 
375  D  TD sensor adjustment error: Y 
  During TD sensor initializ
ation, the output value of the black, magenta, 
cyan, or yellow TD sensor is not wi thin the range of the specified value 
with SP3238-001 to -004 (default: 2.7V) ± 0.2V 
   
ƒ
 Heat seal not removed from a new developer pack 
ƒ TD harness sensor disconnect ed, loose or defective 
ƒ TD sensor defective 
ƒ Harness between TD sensor and dr awer disconnected, defective 
   1.  Remove the heat seal from each PCU. 
2. Replace the 
defective PCU. 
 
Rev. 10/2007 
						

							B230/B237/D042 4-32 SM 
 
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures) 
Drum gear position sensor error 
The machine does not detect the drum  position signal for three second 
at the drum phase adjustment. 
ƒ  Dirty or defective drum  gear position sensor 
380 C 
1. Replace the drum  gear position sensor. 
2. Replace the PCU. 
 
No. Type Details (Symptom, Possible C ause, Troubleshooting Procedures) 
Black Development/PCU drive motor error 
The machine detects a High signal from the Black Development/PCU 
drive motor for two continuous seconds. 
• Motor overload 
•   Defective Black Development/PCU drive motor 
396 D 
1. Check or replace the harness 
2. Replace the Black Development/PCU drive motor 
 
No. Type Details (Symptom, Possible C ause, Troubleshooting Procedures) 
Color drum drive motor error 
The machine detects a High signal from the color drum drive motor for 
two continuous seconds. 
• Motor overload 
•   Defective color drum drive motor 
397 D 
1. Check or replace the harness 
2. Replace the color drum drive motor 
 
⇒
⇒ 
Rev. 10/2007 
						

							 
SM 4-33 B230/B237/D042 
Trouble 
shooting 
 
No. Type Details (Symptom, Possible C ause, Troubleshooting Procedures) 
ID sensor adjustment error 
When the Vsg error counter reaches 3, the machine detects SC400.
The Vsg error counter counts 1 when  the Vsg detected by ID sensor is 
more than the value (default: 4.5V ) specified with SP3234-005 or less 
than the value (default: 3.5V)  specified with SP SP3234-006. 
ƒ Dirty or defective ID sensor 
ƒ Defective ID sensor shutter 
400 D 
1.  Check the harness of the ID sensor. 
2.  Clean or replace the ID sensor. 
 
ƒ  After replacing the ID sensor, input the ID sensor correction 
coefficient with SP3362-013 to - 018. For details, refer to ID 
sensor board in the Replacem ent and Adjustment section. 
3. Replace the IOB. 
4.  Replace the image transfer belt unit. 
 
No. Type Details (Symptom, Possible C ause, Troubleshooting Procedures) 
Image transfer unit motor error 
The motor LOCK signal is not detected for more than two seconds 
while the motor START signal is on. 
ƒ Motor overload   
ƒ Defective image transfer unit motor 
441 D 
1.  Replace the image transfer belt unit.   
2. Replace the IOB. 
  
						

							B230/B237/D042 4-34 SM 
 
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures) 
Image transfer belt contact motor error 
The image transfer belt contact sensor  does not detect the movement 
of actuator at the  sensor while the polygon motor rotates. 
ƒ Dirty image transfer bel t contact sensor   
ƒ Defective image transfer belt contact motor 
ƒ Disconnected connector of  image transfer belt contact sensor or 
motor 
ƒ  Disconnected cable 
442 D 
1.  Replace the image trans fer belt contact sensor. 
2.  Replace the image trans fer belt contact motor. 
 
No. Type Details (Symptom, Possible C ause, Troubleshooting Procedures) 
Image transfer unit error 
The machine detects the encoder sensor error. 
ƒ Defective encoder sensor 
ƒ Image transfer unit installation error 
ƒ Defective image transfer unit motor 
443 D 
1.  Check if the image transfer unit is correctly set. 
2.  Replace the image transfer unit motor. 
3.  Replace the image transfer unit. 
  
						

							 
SM 4-35 B230/B237/D042 
Trouble 
shooting 
 
No. Type Details (Symptom, Possible C ause, Troubleshooting Procedures) 
Paper transfer unit contact error 
The paper transfer unit contact sensor does not detect the movement of 
actuator at the sensor while  the polygon motor rotates. 
ƒ Defective paper transfer unit contact sensor 
ƒ Defective paper transfer unit contact motor 
ƒ Broken +24V fuse on PSU 
ƒ Defective IOB 
452 D 
1.  Check the connection between the paper transfer unit and PSU. 
2.  Replace the paper trans fer unit contact sensor. 
3.  Replace the paper transfer unit contact motor. 
4.  Replace the +24V fuse on the PSU. 
5. Replace the IOB. 
 
No. Type Details (Symptom, Possible C ause, Troubleshooting Procedures) 
Separation power pack output error 
An interrupt checks the status of  the power pack every 20 ms. This SC 
is issued if the BICU detects a s hort in the power pack 10 times at 
D(ac). 
ƒ  Damaged insulation on the high-voltage supply cable 
ƒ Damaged insulation around the high-voltage power supply. 
460 D 
1. Replace the high- voltage supply cable. 
2.  Replace the high-voltage power supply unit. 
3. Replace the IOB. 
  
						

							B230/B237/D042 4-36 SM 
 
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures) 
Toner transport motor error 
The LOCK signal is not detected  for 2 seconds when the transport 
motor turns on. 
ƒ  Toner transport motor overload 
ƒ Disconnected or broken harness 
ƒ Defective toner transport motor 
ƒ Opened +24V fuse on the PSU 
ƒ Defective interlock switch 
490 D 
1.  Check or replace the harness. 
2.  Replace the toner transport motor. 
3.  Replace the +24V fuse on the PSU. 
4.  Replace the interlock switch. 
 
No. Type Details (Symptom, Possible C ause, Troubleshooting Procedures) 
High voltage power: Drum/ development bias output error 
An error signal is detected for 0.2  seconds when charging the drum or 
development. 
ƒ  High voltage leak 
ƒ Broken harness 
ƒ Defective drum unit or development unit 
ƒ Defective high voltage supply unit 
491 D 
1.  Check or replace the harness. 
2.  Replace the drum unit or paper transfer unit. 
3.  Replace the high voltage supply unit. 
  
						

							 
SM 4-37 B230/B237/D042 
Trouble 
shooting 
 
No. Type Details (Symptom, Possible C ause, Troubleshooting Procedures) 
High voltage power: Image transfer/ p aper transfer bias output error 
An error signal is detected for 0.2 seconds when charging the 
separation, image transfer bet or paper transfer roller. 
ƒ  High voltage leak 
ƒ Broken harness 
ƒ Defective image transfer belt unit or paper transfer unit 
ƒ Defective high voltage supply unit 
492 D 
1.  Check or replace the harness. 
2.  Replace the image transfer bel t unit or paper transfer unit. 
3.  Replace the high voltage supply unit. 
 
No. Type Details (Symptom, Possible C ause, Troubleshooting Procedures) 
Temperature and humidity sensor error 2 
ƒ The thermistor output of the temperature sensor was not within the 
prescribed range (0.5V to 4.2V). 
ƒ The thermistor output of the humid ity sensor was not within the 
prescribed range (0.01V to 2.4V). 
ƒ  Temperature and humidity sensor  harness disconnected, loose, 
defective 
ƒ  Temperature and humidit y sensor defective 
498 C 
1.  Check the connector and harness. 
2. Replace the temper ature/humidity sensor. 
  
						

							B230/B237/D042 4-38 SM 
 
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures) 
501  B  Paper Tray 1 error 
502  B  Paper Tray 2 error 
  When the tray lift motor is turned on,
 (if the upper limit is not detected 
within 10 seconds), the machine asks the user to reset the tray. If this 
condition occurs three consecutive times, t he SC is generated. 
  
ƒ
 Defective paper lift sensor 
ƒ Defective tray lift motor 
ƒ Defective bottom plate lift mechanism 
ƒ Defective IOB 
    1.  Check if the bottom plate smoothly moves up and down manually. 
2.  Check and/or replace the tray lift motor. 
3. Replace the IOB.