Dual 606 - To Remove the tonearm or the spring housing; Removing the tonearm from the bearing frame; Adjusting the tonearm bearing; Fitting a 1;2 inch cartridge

Fig. 8
Fig. 9
Fig.
10
33
32
58
54
55
61
63
211
212
210
208
210
207
206
To
Remove the
tonearm or the
spring
housing
1. Secure the
unit in a
repair stand.
Turn the
rotary turn
switch
51
to the zero
position.
Lock the
tonearm 48.
Remove the
counterweight 49.
2. Turn
the unit
over. Remove
the screening
sheet 140 and
solder off the
tonearm
connections at the
short circuiter
137.
Turn the
unit the right
way up.
3.
Remove the
fillister head screw
55. Remove the
rotary turn
switch 54 and
the washer
53.
4. Loosen
the nut 50 and
the grub screw
51. Draw
the tone -
arm 48
complete with
bearing 57 from the
bearing race
52.
The
spring housing
52 or the
tonearm 48 may
now be
changed.
Reassembly involves
the reverse
procedure.
Removing the tonearm from the bearing
frame
We
recommend the following
procedure:
1. Clamp unit
in the repair stand.
Set rotary knob 54 to
zero.
Lock
tonearm 48. Remove weight 49.
2.
Turn unit over and remove
the screening sheet 140.
Unsolder
the
tonearm connections on the
muting switch 137.
3. Remove safety
washer 187, washer 186 and
bearing 185.
Move positioning
bar 219 towards muting switch 137.
4. Unlock
tension spring 203, loosen
safety washer 217 and
remove skating lever 216.
5.
Remove safety washer 214
and sliding washer 213 and take
shut-off bar 161
from segment.
6. Slacken
hex nuts 210 and the screw
212. Remove the bearing
211 and segment 207.
7. Hold
tonearm 48.
Remove the machine
screw 35 and tone -
arm cpl.
with tonearm bearing.
Reassembly of
the tonearm involves the
reverse procedure.
Take
care that the grub screw 33 is
correctly seated in the bearing
when fasten ing
the frame 34.
Adjusting the
tonearm bearing
First balance
tonearm exactly.
Both bearings must
have slight,
just perceptible
play. The horizontal
tonearm bearing is
correctly
adjusted
when at anti-skating
settings "0.5" and being
touched it
slides in without
resistance. The
vertical tonearm bearing is
correctly
adjusted when it
swings in after
being touched. The
play of
the horizontal tonearm
bearing should be
adjusted with
threaded pin 33
and mat of the
vertical tonearm
bearing with
threaded pin 51.
Fitting a 1/2 inch cartridge
If a cartridge with 1/2
inch standard mount
is to be
fitted, the
conversion kit 31
Number 262 186
is necessary. The
proper me-
thod of fitting is shown in fig. 8.
Also the decorative cover
should be removed from
the counter-
weight 49 and should be
fitted with the
compensatory weight to
be found in the conversion kit 31.
Any
alteration can only be carried out with
the aid of a
Dual
-
Skate -0 -Meter and a test record and should
only be done by an
authorized service station.
Anti-skating Device
To
compensate for skating force use the knurled ring 68. The
asymmetric cam plate displaces the skating
lever 216 from
the
tonearm pivoting point. The anti-skating force is transmitted to
the segment
207 and to the tonearm 48 by tension
spring 208.
Optimum
adjustment is
carried
out at the works for
styli
having
a tip radius of 15 11m
(conical), 5/6
and 18/22 (elliptical).
Any
alteration can only be carried
out
with the aid
of a Dual
-
Skate -0 -Meter
and a test
record and should only
be
done
by an
authorized service station.
6