25. System Maintenance & Diagnosis ....................................................... 1001. System Maintenance and Repair ........................................................ 1012. Diagnosis ............................................................................................. 1026. Appendix ................................................................................................ 104Appendix Installation Drawing .............................................................. 104Failure to avoid the following potentially hazardous situations may result in injury or propertydamage.This device’s electronic chat system(ECS) is developed for the navigational aid only and chart itself does notobtain any approvals; has not been certified from the government authorities. If operator needs safenavigation then must use an official chart that has been approved by government agencies; also operator isfully responsible for using this device.