RapidMatchTM GO Spectrophotometer20calibrate. sample surface. sure that all 3 sensor indicatorson the screen turn green.Contact sensor(s) arenot working correctly.Sensors may be stuckdue to dirt or paint; orthey are defective.Open a new job to show the 3sensor indicators on the screenand place the instrument on a flatsurface and then lift it. If one ormore of the sensor indicators inthe screen do not change colorwhen lifted, there may be aproblem with the contactsensor(s). Contact technicalsupport.Shutter error. Instrument defective. Contact technical support.Multiple errormessages.Instrument encountereda cascade of errors.Press OK button in errormessage for 2 seconds.Date and timewrong.Incorrect setting. Refer to instruction in manual.16. Service InformationIf you have any service request, please contact your local PPG Service andSupport.17. Replacement PartsPart Part NumberUSB cable SE108-USBAB-03Safety Strap 59-902288-01Screen Protector TPZ-27724