Setting the clock. A friend gave me his pioneer radio/cd player and we can't fiqure out how to set

Question

A friend gave me his pioneer radio/cd player and we can't fiqure out how to set the clock. All I have for info on it is that it is a pioneer. It has super tuner d, eeq mosfet, 50w x 4 on the front. It is already installed, and we really don't want to tear it back out.