Advertisement
Auto-cut operation fails to work
= Auto-Cut Failure
Locate operation failure
Does the locate-in indicat-
or LED
flash on and off
when
the locate-in switch
YES
is pressed, and the locate-
out
indicator
LED
flash
on and off when the locate-
out switch pressed?
Is
locate
operation
in
progress?
Recheck
after completion
of locate operation
Has the tonearm
left the
arm
rest
(phono
motor
rotation)
Are pins 27, 28 and 29 of
IC1
switched
to L level
when
the locate switches
are pressed?
Check
pattern
from
S6
and S7 up to pins 27 — 29
of IC1
Does the lead-out indicat-
or LED light up when the
START/STOP
switch
is
pressed?
YES
YES
Furthermore,
are pins 9,
10, 11 and 12 of ICl
Check pattern around pins
switched
to L level as a
9—12o0fICl
result of pressing the locate
switches?
Is IC1 pin 26 switched to
L level when the START/
STOP
switch
is pressed?
Check
pattern
from
START/STOP
switch
up
to pins 12 and 26 of IC1
YES
Is ICL pin 12 switched to
L level when the START/
STOP
switch
is pressed?
Are pins 11, 9, 1 and 3 of
IC3
switched
to
L
level
NO
Check
pattern
from
pins
when
the locate switches
9 — 12 of IC1 up to IC3
are pressed?
YES
Check circuit components
and
pattern
in the
area
between pins 10, 8, 2 and
4 of IC3 and pins 2 and 3
of IC4.
Advertisement
