X - R i t e e X a c t ™ I n s t r u m e n t84TroubleshootingPrior to contacting the support department for instrument problems, try the applicable solution(s)described below. If the condition persists, contact us using one of the methods listed in the ServiceInformation section.You can also refer to the instrument Diagnostics function within the eXact Manager application foradditional troubleshooting information.Problem Cause/SolutionInstrument notresponding (nodisplay).Instrument in sleep mode.• Touch display or take measurement.Instrument in power down mode.• Press the power button until the splash screen appears.Battery is very low.• Charge the battery.Instrument andsoftware notcommunicating (USBconnection).Interface cable not connected.• Connect the interface cable between the computer and the instrument.• Close and restart the software application. If this does not work, rebootthe computer.• Remove power from the instrument, reapply power and see if thecondition is corrected.Instrument andsoftware notcommunicating(wireless connection).Wireless function not activated.• Activate Bluetooth wireless connection in the device. Refer to theBluetooth Installation section for information.• Activate Bluetooth wireless connection on your computer. Refer to themanufacturer's manual of your computer.• Close and restart the software application. If this does not work, rebootthe computer.Calibration procedurefails.Calibration plaque is dirty or damaged.• Clean the plaque per procedure in Appendix.Measurement error orresults appearinaccurate.Samples being measured is dirty or damaged (e.g. scratched).• Obtain new sample.Instrument requires calibration.• Perform a calibration on the instrument (see Diagnostics tool section).Instrument optics are dirty.• Clean instrument optics (see General Cleaning).Patch recognitionproblems.If the instrument has a problem properly detecting a particular patch thefirst time, you can manually change the patch (refer to Change Standardor Patch icon section earlier in the manual for details). The instrument willalso automatically adjust what it estimates different patches will appearlike based on the paper and solid measurements. Therefore, paper shouldbe the first patch measured in any job and then a solid before other patchtypes. If a wrong measurement is “taught” to the wrong patch type, it