Ricoh M290-27 - Specific Image Defects; Troubleshooting Dark Lines

SC6xx: Communication Errors
Code Level Details
688 D No CTL_PRREQ_N Signal
Paper failed to feed after the machine has reached the reload temperature,
because the main board did not issue a PRREQ signal.
• The main board harness connector is loose, broken, or defective.
• The main board is defective.
• Check the main board harness connector.
• Replace the main board.
SC10xx: Others
Code Level Details
1001 D Scan Motor Error
Scanner calibration failed (scanner cannot find the home position).
• Cycle the power OFF/ON.
• Check the connection.
• Replace the scanner unit.
5. Troubleshooting
74
RTB 4
Modified