C.E.C. TUBE53 Owner's Manual page 13

Pull the broken vacuum tube out, lifting it straight up from the unit. Insert a new
vacuum tube into the socket, making sure the pins are lined up adequately. Check that
the tube is plugged in fi rmly and completely.
Note: Avoid handling the vacuum tube with bare hands. Handle with gloves or a dry
cloth to prevent leaving fi ngerprints on the tube, as this may cause the vacuum tube to
overheat at the fi ngerprint(s) and increase the risk of malfunction.
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Note: Use genuine C.E.C. vacuum tubes for replacement. Any malfunctions caused by
the use of generic tubes will be exempt from warranty.
Only the malfunctioning vacuum tubes need to be replaced.
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