Technics SU-A900DM2 - Page 11

| SE-A900SM2
installation of the bottom cover after replacement
Regulator transistor
(Q781) [2SD2374PQAU] —- Power IC(IC501)
[SVI3205B]
Power IC(IC502)
[RSN6000A]
‘3 , wa
RS
We AWN Sy
a
a ene
Screw(XTB3+8J)
(Prepare this screw :
to fix the bottom cover.)
age
|
|
\ Bottom cover
‘
we Ab, ‘ 2a 2S ene Nig
Ga
‘
Bi
os
v
ae
,
GA
i
-
.
\
I
Bottom
chassis
ass'y
rr*)
%y
ad
ps
’
a Align the ribs of bottom
eae with lugs.
1.
After
replceing
the
power
IC
or
regulator
transistor,
apply
a sufficient quantity of compound grease (RFKX0002)
between
the
heat
sink
and
the
power
IC
or
regulator
transistor
(Radiation of power IC).
2. Tighten enough the screws ( @) after replacing the power IC
and
regulator
transisitor.
Otherwise,
the
heat
rabiation
works
little.
3. Replacement for the fan motor
°
Follow
the
~
GEE)
in
item
1
on
checking
Put
a
screwdriver
atthe
__
Remove
the
fan
tap.
procedure
for
each
P.C.B.
on
pages
8
and
9.
root
of
the
fan
and
remove
It.
Fan case
When replacing the fan motor, align the boss
of
the
fan
case
with
the
hole
of
the
fan
motor.
Remove
the
fan
motor.
Remove
the
fan
terminal
Cap.
Fan motor <
[MDN-4RB4MRC] i: S
: :
s
R &
a Sy \
We 5
. :
Sy A s>
\
Fan
case
Fan
terminal
cap
Fan motor
me ee