JVC L-F66 Service Manual page 13

Fully automatic direct drive turntable
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'tonearm is carried
quickly to the inner
section of the record
bby hand, does it,
return?
When this re-
|
adjustment is
of no effect, and
when less than
BV appears at |
Readjust the auto-return
(lead-out) as instructed in
7413)
'Check to see whether the ad-
justed VR802 is greatly out
Of position, or whether the
capacity of C805 is lost, or
whether R827 or R828 is dis
connected, or whether output
appears
at TP-6. If anything
is defective repair
or roplace it.
on record play
'When TP-2
ie grounded, does
approx. 0'V appear at the
Pin 1 of 18022,
10802 is defective.
'Or cheek the connection
'of R832 and R833, etc
Since the capa-
city of C807
lost, replace
TP-4 with the
tonearm put
'on the tone-
'arm rest, re
lace P1802,
8-(4)
Tonearm does not reject when REJECT switch is pressed
'The tonoarm doos not reject
when REJECT switch
is pressed,
'$0804 is defective.
Or the
pattern in its vicinity
is de
8-(5)
The turntable does not rotate when START switch is pressed
'The turntable doos not rotate when
START switch is pressad.
Does
Spprox 6 V appear
fospectively at the positive
'and negative terminals of
'the motor
£300763-00:
No
Does approx
8V appear at Pin 7
of 108027
Is the vol-
tage at Pin 6 of
1c 802 OV oF similar
vvalue to the ground
voltage.
No
Since the motor is dis-
connected, replace it.
Yes | 813 is disconnected or
X803 is defective, replace it.
disconnected, replace it.
1s the output
at Pin § of 1C801
at "H"level?
1s the output
at Pin 3 of 1803
at "H"level?
Since 1C803 is defect
place it. When this replace-
ment is not effective,
Yes
Since 1C801 is detective,
replace it.
Yes
No, "L" level
Fe
START switch (S805) is
defective, Or check its
wiring,
'Check to see whether the
pattern and circuit related
with REJECT switch is dis-
connected or short-circuited.
=~10-
No. 2526

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