Furuno SFD-1010 Operator's Manual page 201

When using fish finder
Change from [MENU]
1. Select [MENU] → [SYSTEM] → [Sensor
Switching].
2. The pop-up window asks if you are sure to
proceed. Select [YES].
Change from [BRILLIANCE]
1. Press POWER/BRILLIANCE key.
2. Select [Sensor Switching].
3. The pop-up window asks if you are sure to proceed. Select [YES].
5. INSTALLATION
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