"Frequency out of range" when plugged into macbook

this is easy, that OUT OF range means
the PC sending video is sending and illegall higher resolution
than the projector supports (or even less, on this old junk)
the manual on that old projector is clear on that. max.
SONY VPL-EX4 2007, 13 years old now.
and back then projectors STINK !
your manual shows this, and stinks.
what stinks worse is no matrix of legal H./V resolutions shown in the manual. (shows only 1)
so set the PC to 1400 x 1050 and do not use others . ok.
and 60Hz, are you in USA? not stated country.

Try changing your monitor preferences, such as resolution, and frequency. If that not help try install latest graphic drivers for Your laptop.

Most likely your PC or laptop is currently set to a display resolution that is too high for the projector or is one that it cannot handle. Try setting your computer display to 640 x 480 or 800 x 600 and see if you can get the projector to work. If it does, then you can figure out the maximum display resolution you can use. Also consult your projector documentation for supported resolution modes.

Install the driver of your video, here is the link http://h10025.www1.hp.com/ewfrf/wc/softwareDownloadIndex?cc=us&lc=en&dlc=en&softwareitem=ob-75553-1

this is probably a projector setting
try checking the setting of both systems

change the resolution to 800x600 and if it works raise the resolution step by step

Hello,
Your Macbook should automaticaly find the best resolution, if everything was OK. Is there any HDMI input on the dell projector? What projector is it? Is there is an HDMI input, you can use a HDMI to mini DVI cable: better picture and sound than VGA, and will probably solve your problem

Force the frequency on the mac to 60hz. The projector can't respond to the high clock rate of the mac. Contact sanyo for a firmware upgrade to this product as well

Pl. send me solution. I am stuck with problem

vpl-es4 sony projector-frequency out of range.

Hi, Perhaps you can try lowering the screen resolution first of the laptop before plugging in the projector and then the Fn + F8. Thereafter, gradually increase the screen resolution until projector stops displaying. The idea is that your current screen resolution maybe too much for the projector to handle. This of course is assuming that there is no hardware problem with the projector. Hope this be of some help/idea. Post back how things turn up or should you need further information. Good luck and kind regards.