Both the main capstan belt as well as the counter belt were replaced. The idler was replaced in the early 2000s, and in the most recent service was treated with a substance that will ensure it remains'grippy'. The pinch roller was cleaned and treated for best performance.
The deck was calibrated precisely to the specs stated in the service manual. The three different tape "formulas" were all correctly calibrated for the frequency responses listed in the service manual for each type of tape. All of the repairs and calibrations were performed by a professional service technician who specializes in vintage audio equipment. The item "NAKAMICHI ZX-9 DISCRETE HEAD CASSETTE DECK" is in sale since Friday, April 3, 2020. This item is in the category "Consumer Electronics\TV, Video & Home Audio\Home Audio\Home Audio Components\Cassette Tape Decks".The seller is "bartleo" and is located in Rowley, Massachusetts. This item can be shipped to United States, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, Sweden, South Korea, Indonesia, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Israel, New Zealand, Singapore, Switzerland, Norway, Saudi arabia, United arab emirates, Qatar, Bahrain, Croatia, Malaysia, Bangladesh, Brunei darussalam, Bolivia, Egypt, French guiana, Guernsey, Gibraltar, Guadeloupe, Iceland, Jersey, Jordan, Cambodia, Liechtenstein, Luxembourg, Monaco, Macao, Martinique, Nicaragua, Pakistan, Paraguay, Uruguay.