Boss Dr. Rhytm DR-550 MK II Service Notes page 3

Disassembly procedure
and
precautions
©
How
to remove/install
the Shield Cover
1
.
To
remove
the Shield
Cover
a)
Remove
the solder from "
•
:Soldering
point" (refer
to
"EXPLODED VIEW",
p.2).
b)
Remove
the
main board
(1/2), (2/2),
LCD
and rubber switch.
[
NOTE
|
Refer
to
"Precautions
when
removing the
main board
(1/2)",
p.3)
c)
Use a
soldering iron to
melt location "
",
and remove the
Shield Cover from the top case.
|
NOTE
|
At
this
time,
be
careful not to
melt any other areas of
resin.
i.
a)
"
#
:Soldering
point"(^)SEl
(P.
2)#M) ©^EB-S-IKo
TT
$
l 'o
b)
Main Board
(1/2), (2/2),
LCD,
diU
•
XT
y
UT^^'o
\)1
"MAIN
BOARD(l/2)
£
<D&M
"(P.3)
£#MLT
~F
$
I 'o
)
c)
^"©8B#(TBH&M)£n
h
Kt^lTT^i'o
\)±m\
l'o
2.
To
install
the Shield
Cover
a)
Use a
soldering iron to
melt
location
" and
install
the Shield
Cover
in
the top case.
|
NOTE
|
At this time,
be
careful
not
to
melt any other areas of
resin.
b)
Install the
main
board,
(1/2), (2/2),
LCD
and rubber switch.
|
NOTE
|
Refer
to
"To
install
the LCD",
p.3)
c)
Solder the "
#
:Soldering point"(refer to
"EXPLODED
VIEW",
p.2).
2.
a)
"
"
(D$m
(T0#flR
)
W
U
v~)l
h
non
c
©
b#,
^i'^?
iz
.®
m
l
t
t
$
l'o
b)
Main Board
(1/2), (2/2),
LCD,
d
A
•Xd'y $
l'o
la M\
"LCD (DM
<9
"(P.3)
LT<fc*$l'o
)
c)
"
#
:Soldering point"(
(P. 2)
)
3r^EB
ft 1}
L
TT
$
l 'o
V
DR-550mk2
©
Precautions
when
removing the
main
board
(
1
/
2
)
The
LCD
and rubber connectors are not fastened to the
main board
(1/2)
so
when you remove
the
main
board
(1/2),
be
sure to
remove the
LCD
and rubber connectors
from
the
main board
(1/2).
©
To
install
the
LCD
1.
Insert the
LCD
into the
frame. (Refer to Fig.
a.)
©
MAIN
BOARD
(1/2)
LCD,
dU
•
MAIN BOARD
(1/2)
SftTl'S-tivMnN
MAIN BOARD
(1/2) fcffibftLfcB#
li,
MAIN BOARD
(1/2)
±*'bLCD,
9-
^ItT^l'o
© LCD
l.LCD^#^(iJ6iAAT'T$l'o (Ela#M)
Fig.a
(0
a)
2.
d\L
•
(0b#M)
LCD t
d'-U
•
&
—
t
©ScK",
t MAIN
BOARD
(1/2) iOftfri:,
J&<ft*F
L
l
' «fc
SfcffiftLTTSi'o
Fig.b
(0
b)
2.
While pressing the rubber connector to the right, insert it into
the
slot.
(Refer to Fig. b.)
At
this time,
be
careful that
no
dirt
comes
between the
LCD
and
the
rubber connector, or between the rubber
connector
and
the
main board
(1/2).
3. Install the
main board
(1/2)
firmly
in
place.
3.MAIN
BOARD
(1/2)
L o ftftTTc?
l 'o
4.
Use "Test
Mode
(p.9) / [2]
LCD
Check"
to
confirm that the
LCD
4.
LCD
Z)<IE
L
<
JK
*9 ft S>
fa tzfi't'
O
"fXf
•
X-
K
has
been correctly
installed.
(P. 9) / [2]
LCD
/
TffifiiS
LTT
$
l 'o
3