Technics SL-QX300

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e How to remove the drive circuit P.C.B. and stator frame ©
1. Remove the cabinet and bottom board. (Refer to “How ®@ v
to remove the cabinet and bottom board” .) ® 1 |
—aiy @
2. Remove the 6 stator frame setscrews (Fig. 5: @ ~@),
then the stator frame can be removed.
e To separate the drive circuit P.C.B. and stator frame
. Cut off the stopper by means of nippers.
. Insert the screwdriver between stopper and P.C.B., then
shift it up in the direction of arrow @) as in Fig. 6.
3. Remove the 4 setscrews (Fig. 5: @ ~ @) of drive
Ny =
circuit P.C.B. Then the drive circuit P.C.B. can be re
separated from the stator frame. Drive circuit
P.G.B.
Stator frame
Center :
Stopper
@ Cut off Fig. 6
How to remove the tonearm
. Remove the cabinet and bottom board. (Refer to “How to remove the cabinet and bottom board”’.)
Remove the 3 tonearm base setscrews (Fig. 7: @ ~ @).
Turn over the tonearm base.
Remove the shield plate setscrew (Fig. 8 : @) and remove the shield plate.
Remove the shielding tape and unsolder the 5 lead wires.
Remove the PU fixing plate setscrew (Fig. 8: @) and canceler spring.
. Remove the 2 tonearm setscrews (Fig. 8 : @® , @ ), then the tonearm can be removed in the direction of the arrow.
Note: When fitting the tonearm base to the automatic mechanism plate, make sure that the cueing lever is in ‘‘cueing
down” position.
NOOR WN e
PU fixing
® plate
Canceler spring
Wires
P.C.B.
Blue (Lch. ®)
White (L ch. © )
Red (Rch.@)
Green (R ch. © )
Black (Ground)
Tonearm base
Fig. 7 Fig. 8
Phono output
. Remove the tonearm base.
. Remove the stator frame.
How to remove the automatic mechanism
plate Ass’y
(Refer to “How to remove
the tonearm”.)
(Refer to item 2 of “How
to remove the drive circuit P.C.B. and stator frame’’.)
. Remove the ground wire setscrew (Fig. 9 : @) ) and the
ground wire.
. Remove the 4 automatic mechanism plate setscrews
(Fig. 9: @ ~ § ), Then the automatic mechanism
plate Ass’y can be removed.
e 9
|
Ground wire
Automatic mechanism
plate
Fig. 9
How to remove the start/stop switch P.C.B.
. Remove the cabinet and bottom board. (Refer to ‘““How
to remove the cabinet and bottom board”’.)
. Push the claw in the direction of the arrow A). (Fig. 11)
. Remove the P.C.B. in the direction of the arrow @®).
(Fig. 12)
How to remove the on/off switch
. Remove the cabinet and bottom board. (Refer to “How
to remove the cabinet and bottom board”’.)
. Remove the 2 switch holder setscrews (Fig. 12 : @,
@ ), Then the on/off switch can be removed.
Switch holder ——~
Start/stop
switch P.C.B.
Claw
Fig. 11
NO
. Remove the cabinet and the bottom board.
How to remove the control circuit P.C.B.
(Power source and pitch control circuit)
(Refer to
“How to remove the cabinet and bottom board’’.)
. Turn over the cabinet.
. Remove the pitch control holder setscrew (Fig. 10 : @ )
and pitch control holder.
. Remove the 6 setscrews (Fig. 10: @ ~ @ ) of control
circuit P.C.B. Then, the control circuit P.C.B. can be
removed.
: 98 »
® PP Be
8 La.
@
B Control
circuit
P.C.B.
Pitch control
holder
e How to remove the Hall element
1. Remove the turntable platter.
2. Remove the terminal solder by use of solder sucker.
3. Hold the Hall element with a tweezers and remove it
while touching the soldering iron to the terminal.
(Fig. 13)
Note: Fit the Hall element with the part No. print up.
The reverse in terminal position is allowable provid-
ed that the printed side is up.
Tweezers
Hall elements