My GNS 430/GNC 420 display appears to “wash out” or becomes increasingly difficult to see during periods of extended operation and/or flight. Do I need to have my GNS 430/GNC 420 serviced?
A. No. As the operating temperature of a GNS 430/GNC 420 increases, or in cases of cold startups, you may want to fine tune the display contrast to your preference. High operating temperatures that require this adjustment typically are not damaging to the unit and in some instances can be related to the efficiency of airframe cooling that is provided from behind the installation position of the GNS 430/GNC 420. To adjust the display contrast setting in the GNS 430/GNC 420 use the following steps: NOTE: Adjusting the “Auto Level” of the display contrast may negatively affect the display contrast at other operating temperatures. Keep track of the factory setting prior to making changes in case you want to return to this setting, which represents the best overall display characteristics over a wide temperature span. The unit is set at the factory to automatically compensate for changes to temperature and reverting to the “manual” mode will override this stored setting and require manual a
Related Questions
- My GNS 430/GNC 420 display appears to "wash out" or becomes increasingly difficult to see during periods of extended operation and/or flight. Do I need to have my GNS 430/GNC 420 serviced?
- Why do some real-time stream-gaging stations experience equipment problems for extended periods of time?
- Who should receive the Notice in Connection with Extended Election Periods?
