5-2 OLP-5, OLP-6, OLP-85.2 Service informationWhen first powered on, the device runs a self-testthat checks the program and calibration datamemory, among other things. If an error isdetected, an error message is displayed at theend of the self-test.Fig. 5-1 Error message in LC display, e.g. “E2”Possible error messages1. Acknowledge the error message by pressingany key.2. Power off the device.3. Contact your nearest WG Service Center.Addresses are found at the end of thismanual.Code MeaningE2 An error occurred in the program memory.This can cause malfunctions in keypadoperation or cause the device to lock up.E3 A checksum error occurred in thecalibration data memory. The devicecalibration data are invalid to some extent.Expect decreased measurementaccuracy.