Cleaning, Maintenance of the transducer | Onwa KF-667 guide

4.1.3 Cleaning

Keep the equipment clean and dry at all times. Dust or loose dirt should be wiped off with a soft, dry cloth. Do not use chemical cleaners to clean the display unit-they can remove paint or markings.

4.1.4 Maintenance of the transducer

Marine life on the transducer face will result in gradual decrease in the sensitivity. Check the transducer face for cleanliness each time the boat is hauled out of the water. Carefully remove any marine life with a piece of wood or fine sandpaper.

4-2

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Onwa KF-667 manual Cleaning, Maintenance of the transducer

Contents

Model KF-667 Safety Instructions Table of Contents Introduction FeaturesPage Principle of Operation Display Unit System Configuration TD/Temp PowerTransducer Control Function CONTROLS, Indications Brill Voltage Indications Adjusting Brilliance Turning the Power On/OffDisplay Mode Selection, Description Display mode selection Dual frequency mode Display mode description200K, 50K high frequency, low frequency mode Marker Zoom Zoom mode high or low frequency Automatic Operation Adjusting GainHow it works Enabling automatic operation Basic range selection Selecting Picture Advance SpeedDisplay Range Selection Range shifting Erasing Weak Echoes Scope Display Measuring Depth to a Fish School Menu selection Menu Operation System Menu Main menu description Menu item Description System Menu System menu description Suppressing Low Level Noise Suppressing Interference Selecting Background and Echo Colors AlarmsAlarm description Silencing the buzzer Activating/deactivating an alarm White Marker Zero Line Interpreting the DisplayFish School Echoes Bottom Echo Surface Noise/Aeration Maintenance MAINTENANCE,TROUBLESHOOTINGReplacement of fuse General checking Maintenance of the transducer Cleaning Basic troubleshooting Basic Troubleshooting Transducer Check Water Temperature Sensor option Check MENU1 Menu Tree KF-667 Specifications on Color Video Sounder Power Supply Index