DENON Direct Drive Turntable DP-3000 + Tone Arm SME 3009/Series II Improved Equipped Arm adjustment instructions are available on the internet. Equipped with a British-made SME tone arm, praised as "the world's most beautiful tone arm." Features an oil-damped arm lifter and a knife-edge bearing system. Original cable included. Maintenance: * All electronic components checked * All transistors replaced with new ones * All rectifier diodes replaced with new ones * All variable resistors on the circuit board replaced with new ones * Magnetic detector cleaned * Buttons and relays disassembled and cleaned; relays are gold-plated, so dirt was dissolved with chemicals instead of abrasion. * Motor disassembled, cleaned, and greased * Solder repairs * Arm cleaning and various terminal cleaning * Overall cleaning This unit's servo system uses the same method as broadcasting equipment, employing an AC motor to detect the turntable's rotational speed and control the AC power voltage of the motor to maintain the specified speed. The speed detection method, which determines the servo function, is the same high-precision magnetic recording method (patent/utility model pending) used in broadcasting equipment, allowing for servo control even in the area of rotational speed irregularities. This unit achieves a rotational speed irregularity of 0.03% W・R・M・S, comparable to a cutting machine. After maintenance, the unit has been tested for about a week. There are no issues. Following the repairs, internal and external cleaning has been performed, so I believe you will be able to use it comfortably. Please consider purchasing, understanding that this is a vintage item and may have scratches, unremovable stains, and other signs of use. * Please refrain from purchasing if you are looking for like-new quality or are overly concerned about minor imperfections.