Technics SA-GX550 - POWER IC AND P.C.B. MAINTENANCE GUIDE; Power IC;Transistor Removal and PCB Inspection

Removal of the power IC and
regulator transistor
Power IC
Transistor
Procedure
4. Unsolder the power IC or regulator transistor.
2, Remove the 6 screws( @~ @).
3. Remove the 2 transistor holders.
Regulator transistor
e
When
mounting
the
power
IC
or
regulator
transistor.
Tiansister
holder
Apply
silicone
compound(RFKX0002)
to
the
rear
side
of
power IC or regulator transistor.
m
HOW
TO
CHECK
THE
MAIN
P.C.B.
Rear panel
Front panel ass'y
1.
Remove
the
3
screws(@~
@).
3.
Remove
the
6
screws(@~@®).
2.
Remove
the
front
panel
ass’y
in
the
direction
of
arrow.
Front panel
ass’y
4.
Remove
the
8
screws(@~@).
6.
Reinstall
the
front
panel
ass’y
to
the
main
P.C.B.
5.
Release
the
2
hooks
by
sliding
the
main
P.C.B.
in
the
7.
When
checking
the
soldered
surface
of
the
main
direction
of
arrow@,
and
then
remove
the
main
P.C.B.
P.C.B.
and
replacing
the
parts,
do
as
shown
in
above.
equipped with rear panel in the direction of arrow @).