Technics SL-PD647

SL-PD647
Mi
HOW
TO
CHECK
THE
MAIN
AND
SERVO
P.C.B.
@ Check the main P.C.B.
@ Installation of the worm ass’y
When
installing
the
worm
ass’y
onto
the
worm
base,
move
the
washer
located
between
the
worm
and
pulley
next
to
Worm
ass’y
the worm.
So
Washer
S
@ Installation of the traverse deck
1. Position the elevation cam as shown in the figure on the
right.
2. When the traverse deck is mounted on the mechanism
base ass’y, check that the pin of the sub base ass’y is
positioned at the slanted part of the rib on the elevation
cam.
Chassis ass’ :
Mechanism
y
Retention
post
Fig.
2
base ass’y
_
. Rotate the pulley gear in the direction of arrow until
traverse deck comes up.
2. Place the test disc and secure it by using the clamper
ass’y.
Ground
terminal
:
3.
Connect
the
2
FPC
board(CN601,
CN602)
as
shown
Lead wire in Fig. 2
4, Remove the 3 screws( @ ~ ©) as shown in Fig. 1.
5. Lift the main P.C.B. off the retention post on the chassis
ass’y.
Fig. 1
Sub base ass’y
®
Installation
of
the
tray
ass’y
6.
Set
up
the
main
P.C.B.
1.
Attach
the
FPC
board
to
the
connector(CN403).
3.
Fit
the
limiter
claw
on
the
tray
ass’y
between
the
teeth
of
7.
Connect
the
main
P.C.B.
ground
terminal
(line
out
terminal)
}
2.
Fit
the
claws
on
the
right
side
of
the
tray
ass’y
the
drive
gear(A).
to
the
chassis
ass’y
with
a
lead
wire.
:
underneath
the
claws
on
the
tray
base
guide(R).
-
4.
Align
the
claws
on
the
left
side
of
the
tray
ass’y
with
the
claws on the tray base guide(L) and push the tray ass’y
until
the
claws
catch.
8.
Set
the
unit
in
the
test
mode
as
follows:
5.
After
installing
the
tray
ass’y,
check
that
it
moves
smoothly.
(hold
the
JEWS,
Eitdls
and
keys(3
keys)
on
and
set the power switch to ON.).
Fig.
3
9.
Press
the
FRJEW
key
and
play
the
test
disc.
10. When checking the soldered surface of the main-P:C.B.,
do as shown in Fig. 3.
Tray ass’y
@ Check the servo P.C.B.
When checking the servo P.C.B., place the traverse deck
sideways.
There
are
two
ways(A)
&
(B)
of
securing
the
traverse
deck
CN402
Guned
as shown below.
(A) Securing the traverse deck to the chassis ass’y.
Change the FPC
FPC board of servo board
P.C.B.
Clamper
@
Notes
on
the
installation
of
the
FPC
board
for
the
ass’y
front
panel
ass’y
1.
With
its
blue
line
facing
up,
fully
insert
the
FPC
board
Front panel ass’y
until
the
foil
is
no
longer
exposed.
Long
Test
disc
2.
Insert
the
short
FPC
board
first
and
then
insert
the
long
FPC
board
;
ao
nl
a
legen
FPC
board.
over
it.
Short
of
the
unit.
\
FPC
board
/
Hole
©)
FPC
board
To
Sie
CN602
Front
panel
ass’
:
p
y
Fig.
4
Fig.
5
=
15>
if