[ICOM] IC-551d schematic needed

[Paul Erickson]

Does anyone know where I can get a copy of the IC-551d schematic?

I have been able to verify that the opto chopper is working ( with a 
scope) so I need to find out where further down the chain the problem is.

Thanks to all those who have replied so far.
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cheers, Paul - VA7NT - email: va7nt at telus.net

"Those who hear not the music, think the dancers mad."