Dual 601 - Replacement of Lift Tube

Fig.
16
10 262
180 256
Cause
Tonearm does not set
down at the edge of
the record
Tonearm does not
set down on record
after operating cue
control
Tonearm
lowers onto
record too quickly
when cue control is
operated.
Tonearm returns to
rest after manual
set—down immediate—
ly after
the platter
starts to turn.
Ddect
a)
Tonearm
set—down
point
is
incor—
rectly
set
b)
c)
Record
non—stand—
ard
Friction
face of
tonearm
coupling
dirty
d)
Anti—skating set—
ting im
incor—
rectly set
Excessive
damping in
the lift
tube as a
result
of
contamina—
tion of
the silicone
all.
Damping
insufficient
as
a result
of un—
suitable
addition of
lubricant to
damping
compound.
Position of
shut—
off
has
altered
du —
ring
transport of
the
unit
Replacement of Lift Tube
1 . Secure unit in
repair jig, set stylus
force to 0 and lock tonearm.
2. Move
unit into head
position. Detach main
lever (154) and
compression spring (180).
3.
Disengage tension spring (260),
undo
locking
washer (268) and
detach skating'
lever
(265). Be careful with
compression
spring (267) as lt may
drop out.
4. After removing lock
washer (264) and
ah—
ding washer (263) detach
shut—off bar
(262) from segment
(258).
5. Remove lock washer
(201. Turn set screw
(70) until bearing (201
and bar (256)
are accesibile.
6. Undo
hexagon nut (259) and detach
seg—
ment
(258). Be careful with
washer (67)
as lt may drop out.
7. Hold
tonearm bearing and
remove hexagon
nut
(217). Undo machine
screw (214) and
detach lift tube
assembly (209).
8. Secure
tonearm with
hexagon nut (217).
Remedy
a) Set control lever
(12) to 33 rpm. The
adjusting screw
in the hole under
con—
trol lever (45) will be
exposed. Then
place a 30 cm record
on the platter and
start the unit.
If the stylus sets
down
too far in,
the adjusting screw
should
be turned
anti—clockwise, if
the stylus
sets down too far
out, the screw should
be turned clockwise
(Adjustment im only
carried out
with 30 cm records,
the set—
ting then being
corrected automatically
for 17.5 cm records).
b) Use standard record
c) Clean friction surfaces
d) Correct anti—skating
setting
Remove lift tube
assembly as
described above,
detach control stud on
the lift pin, re—
move safety
washer (212),
detach
adjusting
sleeve and
second washer
(211).
Withdraw
lift pin (216),
clean lift pin
and
lift
tube. Smear
lift pin
evenly with
"Wakker
Silicone Oil AK
500 000".
Reassemble com—
ponents.
Wipe off
surplus silicone
all
after assembly.
Remove lift
tube assembly as
described above
detach
control stud on the
lift pin, remove
lockwasher
(212), detach
adjusting sleeve
and
second washer
(211). Withdraw lift
pin
(216), clean
lift pin and
lift tube.
Smear
lift pin evenly with "Wakker
Silicone Oil
AK
500 000". Reassemble
components. Wipe
eff
surplus silicone
oil after assembly.
After
fitment and
each time after
transport
the unit
should be started
once with tone —
arm
secured for
automatic adjustment of au—
tomatic
shut—off (control
lever (45) to
"Start").
10