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PD-6010
Defective focus mechanism
Defective tracking
Does
abnormal
condition
occur
when
the power
is
switched on?
Does
abnormal
condition
occur
when
power
is
switched on?
YES
YES
YES
Is actuator up/down
oper-
ation achieved?
NO
Y
NO
and other faulty soldering
around pin 17 of IC5
bridge,
other
faulty
sol-
dering, loop gain
and
other faulty soldering
around Q4 and IC7
Is pin 3 of Q3 at H level?
YES
Has focus loop been enter-
ed?
YES
Check
for
solder
bridges
and
other faulty soldering
around focus loop circuit
Check
for
solder
bridges
and
other faulty soldering
around IC3 1/2
Is the
area
around
IC6
free of solder bridges and
other faulty soldering?
Defective reset circuit
Check
for
solder
bridges
and other faulty soldering
Check
for flexy connector
breaks,
and
solder bridges
and
other faulty soldering
around the connector
Check
for
solder
bridges
and other faulty soldering
around IC2 2/2
Is the area around IC6 free
of solder bridges and other
faulty soldering?
Defective reset circuit
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