Author Topic: Ricoh copier Error code SC495 problem solution help  (Read 8564 times)

bobysM

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Ricoh copier Error code SC495 problem solution help
« on: July 07, 2011, 02:08:17 PM »
Ricoh Copier Error Code SC 495 is Toner recycling unit    problem.. Ricoh mp 9000  Waste Toner Collection

SC 495 on a Ricoh MP 9000
     sc 495 ?

1.Check the hose is routed correctly with minimal bending  :)

2. Replace the Toner Attraction Pump and hose.  :)
3. Replaced the Toner Pump.  :)

4. check the sensor at the bottom of the Toner Bank, just inside the left side lower cover. That can get fouled up with toner.... :)

5. The toner pump clogs as a result for SC 495 for this model... toner is cake or wrong toner installed  :)

6. Execute toner bank set up.... then check SP 5803-18 bit 2 should be 1.  :)

7. Performed the toner fill SP2207-2 ( If you empty the toner tubes the machine may not refill quickly enough and will display SC495)  :)

8. Go to  service manual section 1.3.5 "Transporting the copier" and "After moving the copier"   :)

9. Remove the dev unit and check for toner in the entrance to the Toner Hopper.   :)
IF  it looks full the Toner Supply  (Hopper Drive)  Motor is  the problem.

10. Check if the drive on the Toner Hopper turns OK by hand and that the toner (if the Unit looks full) moves away from the opening.
 If It is very tight, change the Toner Hopper.....  :)

11. Remove and check (By Hand) The Toner Supply Motor .... directly to the left of the Developer Drive Motor on the large bracket.
 These may fail and may not produce any code....  :)

Check this:
The motor drives the Toner Hopper and so The Hopper will remain full,  but not feed toner to the Developer Unit.

The Toner End Sensor will see toner at the hopper entrance and the copies will go down in density.

I think this The Toner Supply Motor is the problem.... You can test the motor in SP5804 ( but they run quietly )
 The motor will turn but the gears and belt on the back of the bracket won't......  :)

12. Run the output of the TD sensor SP 2223( High = low toner) and I.D - SP 3103. :)

13. Check the toner tube which runs behind(?) the Toner Pump Motor (Extreme top left corner) just before the connection to the back of the pump assy.
Go to 6-102 of the service manual
The tube can be seen in the bottom diagram entering item J (Toner pump).  :)

14. poor drum ground  :)

15. Check the Toner Supply Motors, remove the right side and rear covers and verify that toner is making it up the long diagonal tube up to the DV unit  :)

Replace the hub for the drum as the bearing has high resistance. This can just be a dirty drum shaft -electrode plate (part # B234 2360 on the MP9000 ).
This "plate" (Discharge brush) takes a fair amount of the load and can cause the problem.   :) :) :)

16. Check the toner hopper if the auger properly rotating and droping toner to the developer unit.....  :)
17. Toner Supply Motor (Next to Dev Drive) turns toner hopper  ...  :)
18. Adjust the transfer belt and test settings in sp mode.  :)

Ricoh MP9000


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« Last Edit: January 06, 2014, 12:04:41 AM by HenryS »

 

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