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Amazon.com: HQRP AC Adapter/Power Supply for Casio CTK-230 / CTK230 Keyboards Replacement [UL Listed] Plus HQRP Euro Plug Adapter : Musical Instruments
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CASIO CTK-230 - Digital Keyboard with 49 full-sized keys, 100 sounds, 100 rhythms, lesson feature, etc. - Catawiki
CTK-230 Keyboard Service Manual: Comprehensive Guide for Diagnostics, Repair, and Maintenance | PDF | Power Supply | Electrical Engineering
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