William Whitaker , Jul 24, 2003; 01:05 a.m.
On the Focomat Ic color there is nothing above the filter drawer except the bulb. The condenser is at the bottom of the head accessible from the outside. An anti-newton glass slips on over the condenser and it is that which rests against the negative. A PH211 bulb (75W) should be standard, although you could use a PH212 (150W).
In order for the autofocus to work properly, the enlarger carriage (the pantograph frame) should rest against a pin located in the upper of two holes on the column. With that setting you should also use an easel with a 1-inch base. The Leitz easels are designed for this, but the Saunders 4-blade easels (UA series) also have a 1-inch autofocus base and in my estimation are easier to use. (They're also not collectible....$) If you don't set the enlarger up correctly you may not be able to bring an image to good focus even with the helicoid.
The color 1c also has an extension tube (#17675) which fits between the lens and the helicoid. The extra 15mm it provides is necessary to use the 50mm lens.
Unless the autofocus mechanism has been messed with, it shouldn't require any adjustment. Make sure all the other parameters are satisfied first. I never completely trust autofocus anyway, always tweaking the focus with the helicoid to satisfy myself that the image really is in focus. Nevertheless the Leitz enlargers remain my favorite for 35mm and medium format. With the color head you can use variable contrast papers easily enough. Any standard timer will work. All you're doing is switching a light bulb on and off, so look for the features you like to print with.
You should be able to obtain a photocopy of the operating manual from Leica USA, although they show up occasionally on Ebay.