Ricoh SP 8400DN Field Service Manual page 1274

Ricoh a3 size black and white laser printer.

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6.Troubleshooting

Duplex Entrance Motor: Lock

Duplex By-pass Motor: Lock

During motor ON, after checking the motor error notification registers (err_velo and

err_posi) for 500msec, the error state of either register was detected at least 5 times.

Paper Exit Motor: Lock

During motor ON, after checking the motor error notification registers (err_velo and

err_posi) for 500msec, the error state of either register was detected at least 5 times.

Error Name/Error Condition/Major Cause/Solution

Motor defective

Connector disconnected

Harness broken

BCU defective

Encoder defective

Replace the motor.

Reset the connector.

Replace the harness.

Replace the BCU.

Error Name/Error Condition/Major Cause/Solution

Motor defective

Connector disconnected

Harness broken

BCU defective

Encoder defective

Replace the motor.

Reset the connector.

Replace the harness.

Replace the BCU.

Error Name/Error Condition/Major Cause/Solution

Fusing 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

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