Dual 1010 - Records do not drop; Tonearm strikes during cycling record

Trouble shooting:
Symptom
Records do not drop
Tonearm strikes during cycling
record
Turntable slows down as record
drops
Tonearm lands beside the
tonearm rest (75)
Tonearm misses the edge
of record
Turntable stops after the tonearm
lowers automatically onto the
record
Tonearm slowly lowers then
suddenly drops onto the record
Tonearm drops quickly then
lowers unsteadily
Cause
a) Travel of cam rocker (195)
too short
b) Automatic spindle not locked
in position
c) Spindle is defective
Tonearm height incorrectly set
Travel of cam rocker (195)
too long
Arm segment assembly (170)
out of position
a) Record size selector
incorrectly set
b) Set-down point incorrectly
adjusted
c) Friction surface of the arm
segment assembly
contaminated with grease
d) Record not of standard size,
Switch arm (125) fails to lock
with latch (179)
Main lever (194) out of
adjustment
Main lever (194) out of
adjustment
~
Remedy
Re-adjust eccentric R 1.
Adjustment is correct when the three supports of
the automatic spindle are completely retracted and
further rotation of the main cam assembly causes
overtravel of about 1/3“ between the cam and the
roller of the cam rocker.
b) After inserting spindle, rotate to its stop.
c) Replace spindle.
Correct by bending the tab (L) of the main lever
assembly (194) with the main cam assembly in
its null position. Adjust so that the tonearm moves
about 1/3" above the tonearm rest and the tabs (L)
are parallel to the arm segment surface.
Re-adjust eccentric R 1. Adjustment is correct
when the three supports of the automatic spindle
are completely retracted and further rotation of
the main cam assembly causes overtravel of about
1/3" between the cam and the roller of the cam
rocker.
Loosen the machine screws (171, 169) and rotate
the arm segment assembly. (Then tighten screw
(171) and re-check adjustment.) Adjustment is
correct when the tonearm is lowered onto the
tonearm rest (75) without binding. Finally tighten
screw (169).
a) Set correctly with the record size button.
b) Correct the set-down point by turning the eccentric
screw R 5, fig. 11 (visable when record size
selector is at 7“).
Adjustment is correct when the tonearm sets
down about 1/1," from the edge of the record.
c) Clean friction surfaces.
d) Use standard records.
Loosen screw (178). Turn the short arm (KH) on
the long switch arm piece (LH) to correct the
switch arm position. Turn the main cam to its null
position and adjust for about '/,,“ play between
the latch (179) and the support (BG).
Bend tabs (L) of the main lever (194) down. Take
care that the tabs are parallel to the arm segment
surface.
Bend tabs (L) of the main lever (194) up. Take
care that the tabs are parallel to the arm segment
surface.