WM-DD11
TABLE
OF
CONTENTS
Section
Title
Page
Specifications
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1
Servicing
Notes
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2
De
ADJUSTMENTS
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3
2.
DIAGRAMS
2-1.
Semiconductor
Lead
Layouts
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7
2-2.
Printed
Wiring
Board
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7
2-3.
Schematic
Diagram
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9
3.
EXPLODED
VIEWS
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11
4.
ELECTRICAL
PARTS
LIST
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14
SERVICING
NOTES
Flexible
Circuit
Board
Repairing
-Keep
the
temperature
of
the
soldering
iron
around
270°C
during
repairing.
-Do
not
touch
the
soldering
iron
on
the
same
con-
ductor
of
the
circuit
board
(within
3
times).
-Be
careful
not
to
apply
force
on
the
conductor
when
soldering
or
unsoldering.
Notes
on
Chip
Component
Replacement
-Never
reuse
a
disconnected
chip
component.
-Notice
that
the
minus
side
of
a
tantalum
capacitor
may
be
damaged
by
heat.
Notes
on
replacing
the
speed
detection
coil
(FG901)
FG901
is
pressed
in
chassis.
Replace
as
chassis
ass’y
when
FG901
is
defective.
Decide
if
FG901
is
defective
or
not
by
removing
lead
wires
of
FG901
from
audio
board
and
measuring
DC
resistance
value.
DC
resistance
value
of
FG901
:
Approx.
6902
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