Dual 1211 Service Manual

Symptom Cause
Remedy
•
Tonearm misses edge of
a) Set —down incorrectly
record
adjusted
Tonearm strikes record
during change cycle
b) Record not standard
size
a) djust set—down with a 12"
record so
that stylus touches record
approxima—
tely 1/16" inside edge of
record. Ad—
justment
will be correct for other
sizes
b) Use standard
records
c) Friction surfaces of
c)
Clean clutch surfaces
tonearm clutch dirty
Tonearm height
incorrect—
Adjust arm height with
screw (48). Height
ly set
is correct
when stylus tip is 1/16" to
1/8"
above start switch
(25) when arm is
removed
from rest lowered
Tonearm does not move on— Damping too
grast, drive
to record when drop
washer dirty
cycle is
started
Tonearm lowers too
quickly when drop cycle
is started
Tonearm returns to rest
immediately after being
placed on
record manual—
ly
Too little damping
Shut—off mechanism has
shifted out of position
during
shipping
Start cycle
Moving the start switch (25) moves
the switch
lever (224) towards the
main cam (242), initiating the fol—
lowing sequence.
a) The
set screw of
the switch
le—
ver assembly (224) turns the
switch arm (221) mounted on the
grooved shaft (227). Via a
ten—
sion spring, this
actuates the
rocker assembly (107) and enga—
ges the idler (133/140) between
the
platter (5) and the motor
pulley (114/189). At the same
time, the power
switch (182) is
actuated by the switch slide
(184)
through the switch arm,
and the turntable begins to ro—
tate.
b)
The
switch lever (224)
is brought
within reach of
the cam follower
lever (245), so
that it is pushed
into the change position after the
rotation of the main cam.
Loosen nut (229) and washer (230) and
drive washer (261). Clean thoroughly.
Coat both sides evenly with silicone
grosse, re—assemble
and wipe off excess
Loosen nut
(229) and washer (230) and
drive washer
(261). Clean thoroughly.
Coat
both sides evenly with silicone
grease, re—assemble and
wipe off excess
Before using changer after
moving, run it
through start cycle with tonearm
locked
on
rest
Fig. 12
Start
position
271 242 220 225 272 262 265 268
221
212
227
226
224
207
208
267
9

Dual 1211 Specifications

General

Weight	6.5 kg
Speeds	33, 45 RPM
Platter	Aluminum
Wow and Flutter	<0.15%
Drive Type	Idler Wheel Drive