Press the [SRC] button; the screen will illuminate. Power Off: Press and hold the [SRC] button for 1 second.
The design language is pure "Cyberpunk." It utilizes a mix of brushed metal, soft-touch buttons, and a prominent display that glows with that distinct, warm amber or green hue characteristic of the era. It looked less like a car radio and more like the control panel of a Gibson-class space cruiser. Clarion Max 7700 Manual
You can typically find the full owner's manual (PDF) through these official and archival sources: Clarion Official Support Press the [SRC] button; the screen will illuminate