Tonearm Does Not Return Automatically - JVC QL-Y5SF Service Manual

6-(6) Tonearm does not return automatically
Auto-return does not operate.
Does the return function
Operate when the tonearm is
placed just before normal record end and
left to follow the groove freely
to the normal record end?
Readjust VR806 for
auto-return, then check
with the test record.
For adjusting VR806,
refer to 5-(6) on page 5.
This phenomenon occurs when
the output at the horizontal
tonearm coil is lower than normal.
No Since the horizontal damping in
this case is also lower than normal,
check in advance the horizontal
damping.
The horizontal damping becomes
normal by repairing the damping
circuit.
Does the voltage at
Pin 1 of 1C809 change
from -5 V to +5 V when 3 mm
pitches in the test record
are played back?
Yes
Check IC808.
No
Does around
-10 to 15 mV (33-1/3 rpm)
appear between TP-1 and
Pin 6 of TP-8?
Yes Check IC809, R848
and R877.
Check the auto-return
Yes of the tonearm with
the test record after
readjusting.
Does around
~-10 to -15 mV (33-1/3 rpm)
appear here by readjusting
VR806?
No
Readjust the offset
by VR805, or IC805
No or 1C806 is defective.
For adjusting VR805,
refer to 5-(8)-3 on
page 5.
Does about 0 V
appear at Pin 6 of 1C806 and
at Pins 6 and 7 of 1C805 when VR801
for tracking force and anti-skating
is set to minimum?
Yes
QL-Y5F
No. 2522
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