error 143 richoo

143	SBU auto adjust error
	The machine could not acquire the white or black peak level setting at power on.	• 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