AL-E77BK
1-10
(No. 2896)
The tonearm does not advance during play.
The tonearm does not advance when
playback although the side-to-side
movement
can be done.
Does the voltage
at the test point TP501 pin @
vary when the tonearm is moved to the
center by hand?
Replace P1301 tonearm
angle sensor because it is
defective.
1C501 or the peripheral circuit is defective.
Playback does not start when the start
button is pressed.
Is
+12 V voltage
present at Q801's coilector
(power supply) and is +5 V
present at Q803's
emitter?
Check the power supply
circuit.
{C901
or the peripheral
circuit is defective.
Check the oscillator circuit
and reset circuit.
Is the voltage at
1C901 pin
© 0 V?
ts
10 V voltage
circuit is defective.
The stepper motor
M301
is defective,
or wires are disconnected.
