w OPTION NOT INSTALLED. The language selected and the corresponding firmware/hardware necessary to run that language is not present in the synthesizer. See “INSTALLATION” for information on language selection.

DISPLAY IS NOT RESPONDING: Can appear on the front panel emulator if the internal processor can not communicate with the display properly. This error indicates a display failure or a display connector problem.

DIVIDE BY ZERO EXCEPTION: This can only be caused by an internal processor error. Refer to the “OPERATOR’S CHECK” chapter for instructions on contacting a qualified service technician.

EEROM FAILED, LOST CAL: This error indicates that the synthesizer has lost its calibration constants and may not meet specifications. Refer to the “OPERATOR’S CHECK” chapter and follow the local operator’s check procedures. If you are a qualified service technician and this failure occurs, read the Calibration Constants section in the Service Guide.

EEROM Failed !!: This error will only occur if the service adjustment menu is accessed. Specifically, an attempt has been made to write to a test patch and EEROM failed to store the data.

ERROR: CALIBRATION FAILED !!: This error will only occur if the service adjustment menu is accessed. Specifically, an Al4 sweep ramp calibration has been attempted and failed. Run the sweep ramp selftest, refer to “MENUS and SELFTESTS” in the Assembly

Level Repair Manual.

ERROR - Must first enter correction freq: This error occurs when a correction point does not have its corresponding frequency entered first. Refer to “Creating and Applying the User Flatness Correction Array,” in chapter 1 of this handbook.

ERROR: Must first enter a List Frequency !!: This error occurs when a dwell or offset value does not have its corresponding frequency entered first. Refer to “Creating and Using a Frequency List,” in chapter 1 of this handbook.

ERROR: Power Search Failed !!: This error occurs when the ALC is in the ALC search mode and is unable to level to the desired power level. Refer to the “OPERATOR’S CHECK” chapter and follow the local operator’s check procedures.

ERROR: Start must be < Stop !!: This error occurs in association with the frequency list, auto fill, feature. If the start frequency entered is greater than the stop frequency, you will see this error. Correct by entering a start frequency less than the stop frequency.

ERROR: Stop must be > Start !!: This error occurs in association with the frequency list, auto fill, feature. If the stop frequency entered is less than the stop frequency you will see this error. Correct by entering a stop frequency greater than the start frequency.

2a-2 Error Messages