If you own any of these devices and see the red “Service Call” prompt with SC569-00, do not reset the main breaker repeatedly—this can damage the power supply unit.
| Priority | Cause | Explanation | |----------|-------|-------------| | 1 | | Tiny paper pieces or a loose staple lodged near the alignment fence guide rails. | | 2 | Alignment fence mechanical binding | Fence skewed, rail dirty/warped, or spring detached. | | 3 | Home position sensor failure | Sensor dirty, disconnected, or failed (e.g., photo-interrupter stuck ON/OFF). | | 4 | Alignment fence motor failure | Motor not turning (open winding, broken gear, harness fault). | | 5 | Motor drive circuit / harness | Broken wire between finisher controller board and motor/sensor. | | 6 | Finisher main board failure | Rare; typically last resort. | sc569-00 ricoh