Ricoh Mp C3000 Service Manual
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B230/B237/D042 4-100 SM (From the previous diagram) 4.5.2 LINE POSITION ADJUSTMENT When there are color registration errors on the output, do the line position adjustment as follows. ƒ Use A3/DLT size paper for this adjustment. Test 1. Do SP2-111-003 (Mode c: rough adjustment). 2. Use SP2-194-007 to check if the result of the line position adjustment is correct (0: Completed successfully, 1: Not completed). If the result is 1, refer to ‘Countermeasure list for color registration errors’. 3. Do SP2-111-001 (Mode a: fine adjustment twice). 4. Use SP2-194-007 to check if the result of the line position adjustment is correct (0: Completed successfully, 1: Not completed). If the result is 1, refer to ‘Countermeasure list for color registration errors’. 5. Put some A3/DLT paper on the by-pass tray. ƒ When you print a test pattern, use the by-pass tray to feed the paper. 6. Print out test pattern 7 with SP2-109-003. 7. Check the printed output with a loupe. 8. If there are no color registration errors on the output, the line position adjustment is correctly done. If not, re fer to the countermeasure list for color registration errors. Countermeasure list for color registration errors
SM 4-101 B230/B237/D042 Trouble shooting After Executing SP2-111-003 Result (SP2-194) -007 -010, -011, -012 Test pattern check Possible cause/Countermeasure White image, Abnormal image, Low density ƒ Defective laser optics housing unit shutter ƒ Defective image processing unit ƒ Low density of test pattern ƒ Defective BICU 1. Replace the shutter motor. 2. Replace the high voltage power supply unit. 3. Do the forced process control (SP3-011-001) or supply some toner (SP3-015-xxx). 4. Replace the BICU. Result: 2 or 3 (Line pattern detection failure) Normal image, but with color registration errors ƒ Defective ID sensor shutter ƒ Defective ID sensor ƒ Defective BICU 1. Replace the ID sensor shutter solenoid. 2. Replace the ID sensor. 3. Replace the BICU. Result: 1 One of results (-010, -011, -012): 5 (Out of adjustable range) The main scan registrations of M, C, Y are shifted by more than ± 15 mm from the main scan registration of Bk. ƒ Defective laser optics housing unit ƒ Defective BICU 1. Replace the laser optics housing unit. 2. Replace the BICU.
B230/B237/D042 4-102 SM
The sub scan
registrations of M, C,
Y are shifted by more
than ± 20 mm from
the sub scan
registration of Bk.
ƒ Defective image transfer belt
ƒ Defective drive units
ƒ Defective BICU
1. Replace the image transfer belt.
2. Replace the drum motor.
3. Replace the BICU.
SM 4-103 B230/B237/D042 Trouble shooting The main scan registration is shifted by more than ± 0.66 mm, but only at the central area of the image on the output. ƒ Defective ID sensor at center ƒ Deformed center area on the image transfer belt ƒ Defective BICU 1. Replace the ID sensor. 2. Replace the image transfer belt. 3. Replace the BICU. The skew for M, C, Y is more than ± 0.75 mm from the main scan registration of Bk ƒ Defective PCU ƒ Defective laser optics housing unit ƒ Defective BICU 1. Reinstall or replace the PCU. 2. Replace the laser optics housing unit. 3. Replace the BICU. Others ƒ Skew correction upper limit error ƒ Defective BICU 1. Reset the skew correction value (see the note at the bottom of the table). 2. Replace the BICU. Result: 0 - - Do SP2-111-001 or -002. ƒ For details about how to reset the skew correction value, s ee Recovery procedure for SC285 and no replacement preparation of laser optics housing unit in “Laser Optics Housing Unit Replac ement” (in the Replacement and Adjustment section of the manual).
B230/B237/D042 4-104 SM After Executing SP2-111-001 Result (SP2-194) -007 -010, -011, -012 Test pattern check Possible cause/Countermeasure White image, Abnormal image, Low density ƒ Defective laser optics housing unit shutter ƒ Defective image processing unit ƒ Low density of test pattern ƒ Defective BICU 1. Replace the shutter motor. 2. Replace the high voltage power supply unit. 3. Do the forced process control (SP3-011-001) or supply some toner (SP3-015-xxx). 4. Replace the BICU. Result: 2 or 3 (Line pattern detection failure) Normal image, but with color registration errors ƒ Defective ID sensor shutter ƒ Defective ID sensor ƒ Defective BICU 1. Replace the ID sensor shutter solenoid. 2. Replace the ID sensor. 3. Replace the BICU. Result: 1 Result: 5 (Out of adjustable range) Low image density on the output ƒ Low pattern density 1. Do the forced process control (SP3-011-001) or supply some toner (SP3-015-xxx).
SM 4-105 B230/B237/D042 Trouble shooting The main scan registrations of M, C, Y are shifted by more than ± 1.4 mm from the main scan registration of Bk. ƒ No defective component ƒ Defective laser optics housing unit ƒ Defective BICU 1. Do SP2-111-003 again. 2. Replace the laser optics housing unit. 3. Replace the BICU. The sub scan registrations of M, C, Y are shifted by more than ± 1.4 mm from the sub scan registration of Bk. ƒ No defective component ƒ Defective image transfer belt ƒ Defective drive units ƒ Defective BICU 1. Do SP2-111-003 again. 2. Replace the image transfer belt. 3. Replace the drum motor. 4. Replace the BICU. The main scan registration is shifted by more than ± 0.66 mm, but only at the central area of the image on the output. ƒ Defective ID sensor at center ƒ Deformed center area on the image transfer belt ƒ Defective BICU 1. Replace the ID sensor. 2. Replace the image transfer belt. 3. Replace the BICU. The skew for M, C, Y is more than ± 0.75 mm from the main scan registration of Bk. – at the end of the scan line? ƒ Defective PCU ƒ Defective laser optics housing unit ƒ Defective BICU 1. Reinstall or replace the PCU. 2. Replace the laser optics housing unit. 3. Replace the BICU. Others ƒ Skew correction upper limit error ƒ Defective BICU 1. Reset the skew correction value
B230/B237/D042 4-106 SM (see the note at the bottom of the table). 2. Replace the BICU. The main scan registration of Bk is shifted. ƒ Abnormal SP setting value of main scan: Bk 1. Adjust the value with SP2-101-001. No color registration errors The main scan length of Bk is shifted. ƒ Abnormal SP setting value of main scan length detection: Bk 1. Adjust the value with SP2-185-001. Low image density on the output ƒ Low pattern density 1. Do the forced process control (SP3-011-001) or supply some toner (SP3-015-xxx). Result: 0 Color registration errors The main scan registration is shifted, but only at the central area of the image on the output. ƒ Defective ID sensor at center ƒ Deformed center area on the image transfer belt ƒ Defective BICU 1. Replace the ID sensor. 2. Replace the image transfer belt. 3. Replace the BICU.
SM 4-107 B230/B237/D042 Trouble shooting The main scan registrations of M, C, Y are shifted. ƒ Defective laser optics housing unit ƒ Defective ID sensor ƒ Defective BICU ƒ Incorrect SP value 1. Replace the laser optics housing unit. 2. Replace the ID sensor. 3. Replace the BICU. 4. Adjust the value with SP2-182-004 to -021. The sub scan registrations of M, C, Y are shifted. ƒ Defective image transfer belt ƒ Defective drive units ƒ Defective ID sensor ƒ Defective BICU ƒ Incorrect SP value 1. Replace the image transfer belt. 2. Replace the ID sensor. 3. Replace the drum motor. 4. Replace the BICU. 5. Adjust the value with SP2-182-022 to -039. ƒ The skew of M, C, Y is different. ƒ Defective PCU ƒ Defective laser optics housing unit ƒ Defective IOB 1. Reinstall or replace the PCU. 2. Replace the laser optics housing unit. 3. Replace the IOB.
B230/B237/D042 4-108 SM ƒ For details about how to reset the skew correction value, s ee Recovery procedure for SC285 and no replacement preparation of laser optics housing unit in “Laser Optics Housing Unit Replac ement” (in the Replacement and Adjustment section of the manual).