Dual 1225 - Page 14

Trouble
Stylus slips out of
playing groove
Vertical tonearm mou-
vement restricted du-
ring set=-down cycle
Tonearm moves with
stylus pressure and
anti-skating scale
in zero position
a) outwards, b) in-
wards
During change, start
and stop operations,
noise from the me—
chanism can be heard
in speaker system
No sound. The short
circuit of the pick-
up leads is no lon-
ger broken
Motor will not shut
off when tonearm is
on arm rest
Acoustic feedback
Cause
a) Tonearm not balan-
ced
b) Tonearm contact
pressure insuffi-
cient
c) Stylus point worn
or splintered
d) Excessive bearing
Friction in tone-
arm bearing
e) Steel ball (224)
of shut-off slide
missing
f) Antiskating ad-
justment incor-
rect
a) Excessive bearing
Friction
b) Lift pin sticks
in lift tube
a) Anti-skating de-
vice out of ad-
justment
b) Excessively taut
tonearm leads
producing torque
Muting switch malad-
justed. Clearance
between contact
strips on muting
Switch excessive
Clearance between
wipers and contact
strips absent or in-
sufficient
Suppression capaci-
tor (in power switch)
is defective (short
circuit)
a) Chassis parts
(e.g. connection
leads) are tou-
ching base cutout.
b) Connecting leads
are too taut
14
position,
Remedy
a) Balance tonearm
b) Check tonearm balance, set contact pres-
sure to value stated by cartridge manu-
facturer
c) Renew stylus
d) Check tonearm bearing
e) Renew steel ball (224)
f) Correct anti-skating adjustment
a) Eliminate friction by adjustment of bea-
ring screw (setscrew 64) and check ba~
lance
b) Remove lift pin and clean (described on
page 9)
a) Adjust skating lever so that skating
spring acts correctly at tonearm pivot
b). Slacken tonearm leads
By bending contact strips. Adjustment is
correct when, with the main cam in neutral
position, the gap between the wipers and
the contact strips on the muting switch is
approximately 0.5 mm. Spray contact springs
with preservative (e.g. Kontakt 61) and
check adjustment of contact strips
By adjusting contact strips. Adjustment is
correct when, with the main cam in neutral
the gap between the wipers and
the contact strips on the muting switch is
approximately 0.5 mm
Renew suppression capacitor in power switch
a) Correct cutout according to instructions
Supplied with unit. Move leads
b) Slacken or extend leads