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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.