I have a Sony ICF DS15ip clock radio, and it no longer plays my ipod, when previously it would.

http://www.manualowl.com/p/Sony/ICF-CD815/Manual/31081
instructions on page 2

I don't see an ACF model, but they list an ICF.
Sony ICF CD815 Operating Instructions

Please check the iPod connector on the Sony. If you can wiggle it, it is probably a bad connection. These models Sony radios have the connector directly soldered on a PCB and it tends to get loose after a while due to connecting/disconnecting the iPod. If it is loose, the connector needs to be resoldered back into place.

I have had the following circumstances when there was a bad connection:
- iPod will not be charged
- iPod can not play music through the Sony
- iPod will play music through the Sony, but an iPhone won't

connectors on the dock are probaly faulty return to sony to get repairedv (it will probaly cost) contact sony to arrange

Yes just go to: http://esupport.sony.com/US/perl/swu-download.pl?upd_id=5885&mdl=ICFCL75IP
This is the version 1.05 update on Sony's site along with instructions on how to install it.

I can't get my ipod to play on my sony dream machine

Turn volume all the way down then back up.

Try this manual:
http://pdf.crse.com/manuals/4139836911.pdf

I've been able to prolong the life on mine by doing this:

Insert the disc, then spin it by hand and quickly close the door and hit play.

It's always worth using a laser cleaner first, as it may just be dirty and stops spinning because it cannot read the disc.

Here you go
http://safemanuals.com/user-guide-instructions-owner-manual/SONY/ICF-C253-_N

let me know if you need anything else. Thanks, Ekse