Dual 622 - Fine Adjustments and Troubleshooting; Tonearm Set-down Adjustment; Shut-off Point Adjustment; Tonearm Lifting Height Setting

The shut-off lever
A is moved towards the dog
M of the
platter
within the shut-off
range
(record diameter 116 mm
to 122
mm).
The dog
engages
the
shut-off lever A. The cam wheel 16 is mo-
ved from 0 position and engage with the
drive pinion of the
platter.
The main lever 183 guides the tonearm back and effected the
tonearm to
return to its
rest
position. During the
running in of
the cam wheel into 0 position the roll 42 of the switch arm 41
can run into the cut-out
provided at the cam wheel and achate
the
power switch
116.
Adjustment Points
Tonearm
set-down point
The set-down
point can be varied with
the eccentric bolt
176. If
the stylus sets down onto the record too far inside or outside
turn
eccentric
bolt 176 in left
or right
direction
(see
Fig. 7).
Shut-off
Point
The shut-off
point
(shut-off area of record diameter
(116/
122 mm) can be varied with the eccentric E mounted on the
seg ment 208.
Tonearm lifting
height
a)
Remove the mains
plug. Guide
the
tonearm 48
towards
the
edge
of the
platter. The
bottom
edge of
the
cartridge housing
should be
parallel to
the top
edge of
the platter
cover.
Carry
out
alignment by turning
the adjusting
sleeve 202.
b) Press
the start
button and
turn the
platter 4 in
normal
direc-
tion
until the
tonearm 48
reaches its
highest
position.
The
tonearm
should now have
a vertical
play of
approximately
1 — 2 mm
(measured at the
tonearm
post). If
necessary,
slightly turn the adjusting
sleeve 202.
Power
Switch
Turn
in tonearm
48. The
slide 117 of
the power
switch 116
should
have
a play
of 0.2 — 0.5 mm.
Adjust by
bending the
switch
arm 41.
Defect
Tonearm does not set
down on record or lowers
too
quick ly when
operating
the cue control lever 190
Vertical tonearm move-
ment shows resistance
Cause
Excessive or
insuffidient
damping as a
result of
contamination of
the
silicone
oil in the
lift
tube
Excessive friction of
Lift
Pin 205 in guide
tube
Fig.
16
Fig. 17
11 llllllll 1111111 ,
11 , 11
1111
111111111 ..
" .. " .
111111.1111117
Ag 18
Remedy
Remove
cue control plate 207. Remove shaft pin 200 and
washer 201. Remove adjustment bush sleeve 212. Remove
washer 203. Remove lift pin 206
and compression spring 205.
Clean lift
tube and lift pin. Smear
lift
pin evenly with "Wacker
Silicon
Oh
l AK 300
000".
Reassemble
components.
See obove, if necessary change the lift
pin 206
9