Dual 1211 Service Manual

Fig. 23
Symptom
Cause
Remedy
Symptom
Switch latches into "stop" po—
sition
when tonearm is
at
rest.
Cause
Too much clearance between tab
on switch arm (221) and start
lever
(226).
Remedy
Adjust tab on
switch arm so that
it
clears start lever by 1/64"
when main cam is in
neutral po-
sition.
During change, stop and
start operations, noises
from
the mechanism can
be heard in system
spea—
ker
Muting
switch misadjus—
ted.
Distance between
contact
springs and
shorting
contact
is too
great
Bend contacts so that,
in the neutral
position of the main cam the
spacing bet—
ween contacts is about 0.02
inch. Clean
contacts
No
sound Spacing too small See
above
Motor
will not shut
off
Capacitor
across power
Replace capacitor (0.1 µF, 700 V)
when
tonearm is on arm
switch
is
shorted
rest
Acoustic feedback
a) Chassis
parts
(for
example leads)
arm
touching base
cut—out
a) Correct cut—out according to instruc—
tions supplied with unit. Move cables
b)
Connecting
cables b) Allow more slack in cables
are
too taut
14

Dual 1211 Specifications

General

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