Arm Base Assembling Procedure - Technics SL-1200MK2 Service Manual

. ARM BASE ASSEMBLING PROCEDURE
4
1 . Attach the control ring to the arm base seat . (The
control ring should be roated counterclockwise .)
2 . Completely tighten the control ring, and then loosen it
1 .5---2 .5 turns to set the scale to "3" . (See Fig . 11)
3 . Hold the arm base and set the red line mark on the arm
base to the scale near "2", then turn the arm base
clockwise . (See Fig . 12)
Note :
Take care not to allow deflection of the predetermined
positions of the control ring and arm base seat .
Fig . 12
4 . Adjust the arm base so that the red line mark on the arm
base is set to the scale "3" of the control ring . Next,
secure the positioning base plate with two setscrews .
(See Fig . 13)
5 . Rotate the control ring and make sure that the arm base
shifts within the range of 0-6mm . (See Figs . 14 and 15)
If it does not shift within the specified range, the arm
base position is deflected . In that case, disassemble the
parts and check as specified in step 3 .
® ADJUST
SPRING
ENT OF CANCELLER
POSITION
If the arm body or PU base plate is replaced, be sure to set
the canceller knob to "0 .5" and make sure that the can-
celler spring is in contact with the arm shaft . (See Fig . 16)
if the canceller spring is deflected, adjust it as follows :
1 . Clamp the arm on the rest .
2 . Set the canceller knob to "0 .5" .
3 . Remove the PU base plate, adjust gear Q so that the
canceller spring is in the position of Fig . 16 .
4 . Mount the PU base plate onto the arm base and cit~ck
the spring position .