Try this link: http://www.marcucci.it/english/download/ The guys have service manuals on line for all existing Icoms, including schematics. Else you may try Sarrio.com but it doesn't come cheap! Alex 4Z5KS -- No virus found in this outgoing message. Checked by AVG Anti-Virus. Version: 7.0.344 / Virus Database: 267.10.15/81 - Release Date: 8/24/2005