Dear Sir
As I seen your post on 12-05-2007 according to Harman Kardon F500 anniversary series.
Now I own this unit and have a problem with it. Technician needs either service manual or schematic of it.
So if you still have it, I am asking for your favor to send me to my E-mail thada_u@hotmail.com
Thank you in advance for your help.
Thada