Ricoh SP 8400DN Field Service Manual page 1276

Ricoh a3 size black and white laser printer.

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6.Troubleshooting

Fusing/paper Exit Motor: Lock

During motor ON, after checking lock signals for 2sec, a High level was detected at least

Error Name/Error Condition/Major Cause/Solution

Motor defective

Connector disconnected

Harness broken

BCU defective

Replace the development exhaust fan.

Reset the connector.

Replace the harness.

Replace the BCU.

Error Name/Error Condition/Major Cause/Solution

Paper Exit Cooling Fan Lock

In the motor ON state, the value of the lock sensor is checked every 100msec.

If a lock signal is not obtained for 50 times consecutively.

Motor defective

Connector disconnected

Harness broken

BCU defective

Replace the paper exit cooling fan.

Reset the connector.

Replace the harness.

Replace the BCU.

Error Name/Error Condition/Major Cause/Solution

Motor defective

Connector disconnected

Harness broken

BCU defective

Unit torque increased

Replace the fusing/paper exit motor.

Reset the connector.

Replace the harness.

Replace the BCU.

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