Dual 1219 1229 Service Manual

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Dual 1219 1229 Service Manual

Extracted text from Dual 1219 1229 Service Manual (Ocr-read)


Page 1

Caution: Never force a stuck single -multi play mode control. If it wont move with very light effort and you force the lever you will break the plastic ears off the bottom of the gimbal ring. There are no service part s for this, you will either scrap the table or have to replace the complete tone arm and gimbal assembly if you can find one. My mode lever moved quite easily and the tone arm did rise, a good sign that the gimbal assembly wa s intact. I put a couple of old records on the stacker and hit start. The tone arm rose from its rest , a record dropped and the tone arm set back down on the rest and the table turned off. I also manually moved the tone arm to the starting groove of the record and found quickly t hat in multi -play mode the tone arm was dragging and would not track. These symptoms are typical for a table that is stuck with old grease, has a broken rubber washer in the single -play multi -play tone arm height control, needs a new tone arm clutch (s ometimes referred to as a guide white or steuerpimpel ) and a d rive motor that needs to be disassembled, cleaned and re -lubed. Below are some better step -by -step descriptions of how I brought this table back to life. Some differences between early and later 1219 tables and 1219 and 1229 tables Some early 1219s were built for use in either US or Europe with a 110v/220v switch on the motor terminal box and had hardwired phono cables and no separate chassis ground wire. Many of these also had 50cycle strobe patterns on the platter. Use of US 110v 60cycle power required a change of the motor pulley to produce set speeds. Metric record sizes were stated on the switch mask. Later United Audio units intended for US only had no 110/220v switching, had R CA output jacks under the table and had ground wires. They had no strobe patterns on the platter. !219s had metal speed control levers and 2 piece pitch control knob knobs where 1229 tables had 1 piece pitch control and plastic speed control knob. Pr eparing the table for service After disconnecting the table and moving it to a work table I first removed platter retaining clip and the platter, cartridge and head shell and the counterweight at the back of the tone arm. Make sure the tone arm is locked on the rest at this point. Next unlock the transport screws, tilt them out of their slots in the mounting board and lift the table out of the base. I have found with careful handling it is safe to work on either side of the turntable when it is placed on a thick soft layer of terrycloth bath towels. Servicing the speed control mechanism Disassembly The example speed control is a 1219 unit which has slightly different pitch knobs and speed switch lever .

Page 2

1. With the table right side up remove th e vinyl keeper washer on the idler wheel and set the idler wheel aside. After the wheel is removed its a good idea to put the keeper washer back on the idler shaft. !229 speed control switch shown above has plastic lever and 1 pc pitch knob.

Page 23

2. Remove cueing lever 3. Notice the position of the inner gimbal ring as it relates to the outer ring, when the tone arm is locked in it's rest - important to go back in the exact same position.

Page 31

14. Tighten 7mm nut just snug, do not over tighten or you will pull gimbal stud out of outer gimbal r ing destroying tone arm support system!!! 15. Reinstall cueing lever.