Ricoh M281 Series - Page 458

Service Call 490-491
D255/D256/M281/M282 6-20 SM
SC No. Type Error Name/Error Condition/Major Cause/Solution
 Toner motor defective
1. Check the drive gears can rotate or they are not
unusually loaded. If necessary, replace the drive gear.
2. Reconnect the following connectors.
 Toner Density Sensor – Drum PCB connector
 Drum PCB – Drum Connection PCB connector
 Drum Connection PCB – Connect-Left PCB
connector
 Connect-Left PCB – IOB connector
3. If the connector is broken, shorted, or grounded,
replace the connector.
4. Replace the drum unit.
 Connect-Left PCB defective
Replace the Connect-Left PCB.
 IOB defective
1. Update the engine software to the latest version.
2. Replace the IOB.