Optimus LAB-1100 Owner's Manual page 10

42-2023.fm Page 10 Wednesday, August 11, 1999 2:50 PM
Symptom
Sound from turntable not
clear or scratchy during
play
Hum from turntable dur-
ing play
Feedback or howling
sound from turntable dur-
ing play
10
Possible Cause
Record is dirty.
Stylus is dirty.
Stylus is improperly
installed.
Stylus is worn.
LINE OUT ON/PHONO OUT
is set to
OFF LINE OUT ON
and turntable is connected
to receiver's/amplifier's
low-level phono input
jacks.
Stylus is improperly
installed.
Turntable is picking up
induction hum from other
components.
LINE OUT ON/PHONO OUT
is set to
OFF LINE OUT ON
and turntable is connected
to receiver's/amplifier's
low-level phono input
jacks.
Turntable is picking up
sound pressure of vibra-
tions from speakers.
Suggestion
Clean the record.
Clean the stylus with a
soft brush (See "Cleaning/
Replacing the Stylus" on
Page 13).
Check the stylus and rein-
stall it if necessary.
Replace the stylus.
Set
LINE OUT ON/PHONO
to
OUT OFF PHONO OUT OFF
Check the stylus and rein-
stall it if necessary.
Check ground terminal
and reposition the turnta-
ble away from other com-
ponents.
Set
LINE OUT ON/PHONO
to
OUT OFF PHONO OUT OFF
Reposition the turntable
away from speakers.
.
.