Ricoh Pro 8300S

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1.SC Codes

Pattern

Error Condition

This SC occurs when the waste toner lock sensor (SEN91) does not detect rotation of its feeler.

Major Cause

 If the waste toner transport path cannot be turned by hand:

 Belt in waste toner transport unit defective

 Waste toner transport path has problems.

 Filters for the cooling fans are dirty.

 If the waste toner transport path can be turned by hand:

 Waste toner lock sensor (SEN91) is defective.

 Shielding plate of the torque limiter of the waste toner transport unit is defective.

 Harness between the waste toner lock sensor (SEN91) and the IOB is not properly connected.

 Waste toner lock sensor (SEN91) is defective.

 Harness between the waste toner lock sensor (SEN91) and the IOB is defective.

 IOB is defective.

Solution

1. Rotate the waste toner collection motor by hand, and see if the belt moves along with it.

 If not, go to Step 2.

 If yes, go to Step 5.

2. Check if the belt of the waste toner transport unit is set properly, and whether it is damaged.

If so, replace the belt.

3. Replace the waste toner transport unit.

It could be that the waste toner transport coil is blocked and the waste toner cannot be transported.

In such a case, replace the waste toner transport unit.

*1 The drive from the old unit can be used on the new unit.

*2 Because waste toner may be stuck in the path, replace all the following: drum cleaning unit, ITB

cleaning unit, and PTR Unit.

4. Clean the air intake fans (Front/Center/Rear).

This SC occurs when the fans fail to cool down the unit sufficiently, and the temperature in the unit

rises. Clean the the filters of the three fan (front/center/rear).

5. Check if there are foreign objects on the waste toner lock sensor (SEN91) or if the sensor is dirty.

If so, clean the sensor.

6. Check if the shielding plate of the torque limiter of the waste toner transport unit is dirty.

 If so, clean it.

 If the shielding plate is missing, replace the torque limiter.

7. Check the harness between the waste toner lock sensor (SEN91) and the IOB. (connector loose or

Ricoh Pro 8300S - Page 91