Ricoh MP C6502SP Field Service Manual page 1160

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5. Troubleshooting

Error Name/Error Condition/Major Cause/Solution

Inverter Junction Gate Motor Error

Inverter junction gate home position sensor did not turn on or off within

150msec from the start of home position detection operation (motor drive

If detected for the first or second time:

• During paper transport, this is not handled as a jam/SC; paper is

fed normally and the error counter increases.

• Otherwise (during initialization), a jam alert is displayed to instruct

the user to remove jammed paper, and the error counter increases.

If detected for the third time:

• Displays the SC No. on the operation panel.

• Inverter junction gate motor defective/connector disconnected/

harness broken

• Inverter junction gate home position sensor defective/connector

disconnected/harness broken

• Circuit board (PFB, DUB) defective

• Junction gate/junction gate drive unit does not move e.g. because

physical obstacle (piece of paper, etc.) is blocking operation.

• Inverter junction gate motor and inverter junction gate home position

sensor check/cleaning/replacement/harness reconnection/

harness replacement

• Check or replace the circuit board (PFB, DUB).

• Check and/or replace the inverter junction gate and inverter

junction gate drive unit.

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