Ricoh M0A0 MP402SPF

• Code: SC121-00
• Description: Scanner home position error 2
  The scanner home position sensor does not detect the scanner coming back to the home position.
• Causes: • Defective scanner home position sensor
  • Defective scanner home position sensor harness
  • Defective scanner motor driver
  • Defective scanner motor
  • Timing belt, pulley, wire, or carriage not installed correctly
• Remedy: Check if the SC occurs by turning the power OFF then ON. If the SC occurs again, do the following steps.
  1. Reconnect the power/signal harness.
  2. Replace the following parts: • Replace the HP sensor • Replace the scanner motor • Replace the harness.

• Code: SC141-00
• Description: Black level correction error
  The automatic adjustment has failed to correct the black level to the permissible range.
• Causes: • Defective scanner carriage
  • Defective BiCU board
  • Defective harness
• Remedy: Turn the main power OFF and then ON.

• Code: SC142-00
• Description: White level correction error
  The automatic adjustment has failed to correct the white level to the permissible range.
• Causes: • BiCU defective
  • Harness defective
  • Connector defective (disconnected, loose)
  • Condensation in scanner unit
  • White plate dirty or installed incorrectly
• Remedy: Check if the SC occurs by turning the power OFF then ON. If the SC occurs again, do the following steps. Check if the SC reoccurs by cycling the power after each step.
  1. Reconnect the following connectors; • Scanner Carriage - BiCU harness (FFC) • BiCU - LEDB harness (FFC)
  2. Replace the scanner carriage
  3. Replace the following harnesses; • Scanner Carriage - BiCU harness (FFC)
  4. Replace the BiCU

• Code: SC144-00
• Description: SBU Communication Error
  Cannot correctly establish communication with the SBU.
• Causes: • BiCU defective
  • Harness defective
  • Connector defective (disconnected, loose)
• Remedy: Check if the SC occurs by turning the power OFF then ON. If the SC occurs again, do the following steps. Check if the SC reoccurs by cycling the power after each step.
  1. Reconnect the following connectors; • Scanner Carriage - BiCU harness (FFC) • BiCU - LEDB harness (FFC)
  2. Replace the following harnesses; • Scanner Carriage - BiCU harness (FFC)
  3. Replace the BiCU.

• Code: SC151-00
• Description: Black level correction error: rear side
  The automatic adjustment has failed to correct the black level (rear side) to the permissible range.
• Causes: • SPDF CIS defective
  • BiCU defective
  • Harness defective
  • Connector defective (disconnected, loose)
• Remedy: Check if the SC occurs by turning the power OFF then ON. If the SC occurs again, do the following steps. Check if the SC reoccurs by cycling the power after each step.
  1. Reconnect the following connectors; • SPDF CIS - BiCU harness (FFC)
  2. Replace the SPDF CIS.
  3. Replace the following harnesses; • SPDF CIS - BiCU harness (FFC)
  4. Replace the BiCU.

• Code: SC152-00
• Description: White level correction error: rear side
  The automatic adjustment has failed to correct the white level (rear side) to the permissible range.
• Causes: • BiCU defective
  • Harness defective
  • Connector defective (disconnected, loose)
  • White plate (rear side) dirty or installed incorrectly
• Remedy: Check if the SC occurs by turning the power OFF then ON. If the SC occurs again, do the following steps. Check if the SC reoccurs by cycling the power after each step.
  1. Clean or replace the white plate (rear side).
  2. Reconnect the following connectors; • SPDF CIS - BiCU harness (FFC)
  3. Replace the SPDF CIS.
  4. Replace the following harnesses; • SPDF CIS - BiCU harness (FFC)
  5. Replace the BiCU.