How to Troubleshoot a Smith Corona SD680
- 1). Check the electrical cord. Verify that the outlet is functional and that there are no frays in the cord. Check where the cord is attached to the typewriter to make sure it is not loose.
- 2). Verify which key or key is sticking. Pry the key or keys up gently using a flat-head screwdriver. Look at the key bed. If there is dirt or food crumbs there, use aerosol air compressor to blow the dirt away or use a vacuum cleaner to remove the debris. Also check the key stem: If it is slightly bent, gently bend it straight using pliers. If not, add a drop of sewing machine oil to the stem. Replace any removed keys.
- 3). Observe the carriage glide. Type on a few keys to get the return to the far edge and add a drop of sewing machine oil to the glide. Press the return key and add a drop of oil to the other side. Continue typing a few strokes to get the oil to spread the length of the carriage glide.
- 4). Replace the ink ribbon cassette. Grasp the cassette on each side and lift straight up and out at the same time. Twist the gear wheel on the bottom of the cassette to rewind the ribbon. Set the cassette back in the carrier and press down. Replace the cassette if the ribbon has been used many times and is worn.
- 5). Remove the correcting tape cassette. Grasp the cassette by both sides and pull it toward you. Twist the gear wheel on the bottom of the cassette in the direction shown to rewind the ribbon. Replace the correcting cassette by pushing it gently back into place.
- 6). Clean the printwheel. Using a cotton swab dipped in rubbing alcohol, gently clean the letters on the printwheel. Wipe with a clean cloth.
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