Tuning is off on FM

[Joey Abs]

Hey all,

Just jumping into the Marantz world and picked up a 2225 the other day. I noticed the AM tuner seems to pick up the right station as shown on the dial but the FM dial is about 2MHz below where the actual station is. (Ex. Station 92.7 will come in when the dial is on about 90.7). I assume there is some sort of tuning adjustment that can be done on the tuning board. Any recommendations?

 

[catrafter]

I suggest you clean the tuner first, that is frequently the problem.
If not, you can touch up the dial alignment by tuning to a known station near the bottom of the dial and 'walking' it to the correct spot on the dial with the 'low end' adjustment.
Then tune to to a known station near the top of the dial and 'walk' it to the correct spot on the dial with the 'hi end' adjustment.
Repeat as needed as they interact somewhat. Be sure to use the correct tools, a thin screw driver type tool for the high end and a plastic hex tuning tool for the low end (GC AS9300).
If you try to use a standard screwdriver on the high end adjustment, it may interact and the tuning will change when you remove the tool. If you try to use a metal hex wrench on the low end adjustment, the core will break.

Tom

 

[ConradH]

The first step in alignment would normally be to check that the pointer and stringing are set correctly, but since the AM is OK, odds of an error there are very low. I'd add to Tom's good instructions, start with small adjustments to get a feel for how sensitive they are. If you have a lot of signals, it can be helpful to have another table radio set to low volume at the station of interest, so when they change programming you know instantly that you're still adjusting to the correct station.

 

[rBuckner]

The typical way the string is off has the dial pointer going too far to the left, meaning the 88MHz end. It won't go near as far to the right past the 108MHz end. Slipping the string can get it pretty close but is not for the faint of heart.