jvc car cd reciever

robnbarb wrote: i cannot figure out how to set the clock, i don't have a manual.

it's a jvc model # kd-s640robnbarb

i;m guessing here but I am pretty sure you hold down the button which lets you change your bass and fader (ie the "audio" button) you hold it down to access the secondary menu. once accessed you either turn the volume dial or press the arrow buttons to cycle though. or if that does not work and if you have a clock button then you probably need to hold the clock button for a bit until the menu pops up.