Yamaha R100 reverb Processor E4 error code

SOURCE: I have a Yamaha R100 DSP unit, which shows

I am going to make a wild guess that they may have a battery backup to maintain previous settings and the battery may be depleted. They would LIKELY do a checksum on the data in the memory and would find it corrupted. I have searched and found that the unit indeed does have a battery.
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Replace it as a first step. It is likely a Lithium coin cell.

Then the problem is to do a "FACTORY RESET" and the manual doesn't tell how. USUALLY one holds down one or more buttons while turning on the power. You might experiment and get lucky doing this.

If you can't find the reset combination by luck and trying, contact Yamaha and ask... they are USUALLY cooperative.

http://www.yamaha.com/yamahavgn/CDA/ContentDetail/WrappedTextDetail.html?CNTID=544117

Testimonial: "Good info... gave me more options where I was stuck before."

Bud Martin

• 11361 Answers
• Posted on Jul 08, 2011

SOURCE: No Reverb operation? New reverb unit. Output to

Sch: http://www.schematicx.com/schematic/fender-acoustasonic-junior-jr-guitar-amplifier-schematic/

SOURCE: Will this processor (Behringer LX1X

It should work.