Technics SL-J2 - TROUBLE SHOOTING; How to use the repair table; How to raise the unit; How to turn over the unit

m TROUBLE SHOOTING
1. How to use the repair table (Fig. 21)
) Remove the bottom board.
@
Remove
the
main
circuit
board
and
connect
the
P.C.B.
ground terminal to the chassis (Stator frame).
@) Put the unit on the repair table.
@ Fit the turntable platter and put on the turntable mat.
)
Put
on
the
record
and
check
the
circuits
from
under
the
unit.
Main circuit board
Fig. 21
2. How to raise the unit (Fig. 22)
Note: Turntable platter is not fixed on the center spindle.
Take care so that the turntable platter will not come
loose. Also, take care allow the set to fall down.
(1) Remove the bottom board.
@) Completely open the upper cabinet.
@) Hold the cabinet (Reset) switch with tape.
(4) Fit the turntable platter.
) Raise the unit and check the circuits. Switch
4
Drive circuit board
Fig. 22
3.
How
to
turn
over
the
unit
(Fig.
23)
Drive
circuit
board
Note: This purpose is to check the voltage of each
circuit
during
stop
of
the
turntable.
Neuer
ical
(1)
Remove
the
turntable
platter
and
turn
over
the
unit.
(2)
Remove
the
bottom
board.
(3)
Turn
the
power
switch
‘‘on”
and
check
the
voltage.
Fig. 23