There is a large latch on either side of the case, the two of which hold the string section and the keys section together. The two sections are joined at the back of the keys section by a couple of slide-release hinges. Support the back end of the string section while unlatching the two latches on the sides -- better to have two people to do this -- and slowly pivot the string section back to the vertical position. The action will be exposed. Google "CP-70 manual" and you can download a PDF of the owners manual -- it has instructions for assembly and disassembly. -----Original Message----- >From: John Ross <jrpiano at win.eastlink.ca> >Sent: Dec 23, 2007 3:17 PM >To: Pianotech List <pianotech at ptg.org> >Subject: Re: CP80 Yamaha portable piano > >I seem to remember the strings plate body assembly, tilts back to give >access to the action. >When I got out of the electronics repair, I got rid of my parts, equipment >and manuals. So unfortunately, I can't refer to the manual. > >John M. Ross >Windsor, Nova Scotia, Canada >jrpiano at win.eastlink.ca >----- Original Message ----- >From: "Martin Wisenbaker" <mbjwisenbaker at juno.com> >To: <pianotech at ptg.org> >Sent: Sunday, December 23, 2007 3:38 PM >Subject: Re: CP80 Yamaha portable piano > > >> List: >> >> I have a customer with a CP 80 Yamaha portable electric piano with a >> problem. One of the hammers has broken off in the middle of the keyboard >> and has fallen down under the back check of the key to its left and is >> holding the hammer up so that both keys cannot play. I can see the broken >> off hammer down in there using a flashlight. Question: how does the >> action come out? I took the key slip off but that was all I could see to >> do. What else needs to be done to get it out so that I can get to the >> broken off hammer and make the repair. This customer is a professional >> entertainer and needs his piano fixed. >> >> Thanks for your help, >> Martin Wisenbaker, RPT >> Houston, Texas >> >
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