Ricoh MP2851

• Code: 143
• Description: SBU auto adjust error
  The machine could not acquire the white or black peak level setting at power on.
• Causes: • Exposure lamp, lamp stabilizer harness connection loose, broken, defective • Exposure lamp defective • Lamp stabilizer defective • Spurious electrical noise on power supply line • White plate dirty or missing • Anti-condensation heater (option) in scanner unit not operating • Harness connection at SBU, iPU, BCU, SIO, loose, broken, defective • SBU defective • IPU defective • BCU defective • SIO Defective

• Code: 144-1
• Description: SBU connection error
  Connection to the SBU could not be confirmed, possibly due to a defect in the BCU detection board
• Causes: • Harness connection at IPU, BCU, SBU loose, broken, defective. • Spurious electrical noise on power supply line • IPU defective • BCU defective • SBU defective

• Code: 144-2
• Description: SBU serial communication error
  Poor SBU power supply caused by SIO, or BCU detection board defective.
• Causes: • Harness connection at IPU, BCU, SBU loose, broken, defective. • Spurious electrical noise on power supply line • IPU defective • BCU defective • SBU defective

• Code: 144-3
• Description: SBU GASBU reset error
  SBU defective, BCU detection circuit defective.
• Causes: • Harness connection at IPU, BCU, SBU loose, broken, defective. • Spurious electrical noise on power supply line • IPU defective • BCU defective • SBU defective

• Code: 144-4
• Description: SBU version error
  SBU defective, BCU detection circuit defective.
• Causes: • Harness connection at IPU, BCU, SBU loose, broken, defective. • Spurious electrical noise on power supply line • IPU defective • BCU defective • SBU defective

• Code: 161
• Description: IPU Error
  The self-diagnostic test detected an error at the IPU at power on, or after the machine returned from energy save mode.
• Causes: • Harness between SBU and IPU loose or broken • IPU defective • SBU defective