14.6 TONEARM MOVEMENT
Are the motor belt and drive wire
properly attached?
Faulty
motor.
OK
Does the motor turn when
the belt is removed?
Check the parts i.e. worm gear,
wheel, wire carriage.
Check the pattern from the 0/C
switch to JP5 and 01 pin 12.
Does the UP LED fail to light?
YES
Check the patterns from O 1 pins 4
and 5 to 03 pins 4 and 5.
Switch failure.
YES
The tonearm fails to move.
Is approximately 11V being applied
to the both terminals of the drive
motor?
NO
With CN3 removed, is the voltage
YES
between CN3 (male) pins
and 2
approximately 11 V?
NO
Does the tonearm only move toward
the center of the record?
Check connections and soldering up
to JP301, the mechanism base board,
and the JP302 motor.
Is 01 pin 27 "H"?
NO i.----------------1
YES
YES
Are both 01 pins 4 and 5 "H"?
NO
YES
Are they both "L"?
NO
NO
Is one of the 03 pins 4 or 5 "L" and
the other "H"?
YES
Check the patterns from 03 pins 11
and 14 to CN3 (male) pins 1 and
2.
Check from 01 pin 27 to CN3 pin
4 JP301, the mechanism base, JP303,
and the rest switch.
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