Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems.

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Tom Maguire
 
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Default Yamaha CLP-550 Service manual

Hello all,

Yamaha CLP-550 Schematic

Power supplies, power amp (via aux in), midi (as controller) OK, audio from the
keyboard is very loud and distorted with volume at "0", louder yet if you turn
it up. ~4vrms at processor board with loud note seems high. I need the D to A
converter setup procedure and nominal levels as well as the schematics for the
filter board and waveforms.

Also, the power on with B1 pressed has no effect on the sound. Are there any
other resets?

Thanks!

Tom


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