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9 . 1 . 1 0
Tonearm fails to move
Is there a voltage dif-
ference between TPg and
TP12
(around
10
to
1 5 V ) ?
Does a voltage difference
(of at least 1V) appear be-
tween TP8 and TP10 when
the tonearm is moved back
and forth?
Defective drive coil / De-
fective drive transistor /
Incorrect magnetic polari
ty
Defective tracking sensor
stage (defective lamp or
CdS element, or discon-
nected lead wire).
-
;d
I
' -
1
' r '
? n
1 F
:"J
tiA
9 . 1 . 1 1
Abnormal tonearm move-
ment
Defective
CdS element,
disconnected lead wire,
dislodged tracking sensor.
Has the zero adjustment
been properly performed?
Can proper zero adjust-
ment be obtained ?
Correct carrier inclination
to horizontal position
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