Yamaha MR1642 Service Manual - Page 18

tA6, Afrit, t.ALtt., S1.Lt10, Fig.4, 1t.gl6R6, laigt

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MR842/MR1242/MR1642 3. Removal of MR-C1, MR-C2 & MR-F Circuit Boards • Pull out the 2 volume knobs C and slide knob. (Fig.2) • Remove the hexagonal nuts. (Fig.2) • Remove the Bottom board. (see procedure 1) • To remove the MR-C1(C2, F) circuit board, remove the 2 bind tapping screws C)(3x8). 4. Removal of MR-D Circuit Board • Pull out the 4 volume knobs it) and slide knob. (Fig.2) • Remove the hexagonal nuts. (Fig.2) • Remove the Bottom board. (see procedure 1) • After the 2 bind tapping screws © (3x8) have been removed, the MR-D circuit board can be removed. (Fig.4) 5. Removal of MR-E Circuit Board a • Pull out the volume knobs and slide knob. (Fig.2) • Remove the hexagonal nuts. (Fig.2) • Remove the Bottom board. (see procedure 1) • The MR-E circuit board can be removed by removing the 2 bind tapping screws OF (3x8). 6. Removal of MR-G Circuit Board • Pull out the volume knobs 0 and slide knob. (Fig.2) • Remove the hexagonal nuts. (Fig.2) • Remove the Bottom board. (see procedure 1) • Remove the 3 bind tapping screws (G) (3x8), the MR-G circuit board can be removed. (Fig.4) MR-F MR-D MR-C1 MR G MR-E MR-C2 F 0 O O O OEl O O O O OOOO p II S 5 ==. 3. MR-C 1 ,C 2 F 03$ LTi • d-:'9 At24vIL V.Y -7-Z t. 16tA6, Afrit 1- t•M-Ltt. (Fig.2) • Ittfgt'ALtto (1xI,-.)1fD •, V3' E/71., -;0 (3 x 8) 2* .M-L, MR-C1 (C 2,F) t.ALtt. (Fig.4) 4. MR-D- 1.0)51•L ' • TI-

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MR842/MR1242/MR1642
R842/MR1242/MR1642
25
3.
Removal
of
MR
-C1,
MR
-C2
&
MR
-F
Circuit
Boards
•
Pull
out
the
2
volume
knobs
C
and
slide
knob.
(Fig.2)
•
Remove
the
hexagonal
nuts.
(Fig.2)
•
Remove
the
Bottom
board.
(see
procedure
1)
•
To
remove
the
MR
-C1
(C2,
F)
circuit
board,
remove
the
2
bind
tapping
screws
C)(3x8).
4.
Removal
of
MR
-D
Circuit
Board
•
Pull
out
the
4
volume
knobs
it)
and
slide
knob.
(Fig.2)
•
Remove
the
hexagonal
nuts.
(Fig.2)
•
Remove
the
Bottom
board.
(see
procedure
1)
•
After
the
2
bind
tapping
screws
©
(3x8)
have
been
removed,
the
MR
-D
circuit
board
can
be
removed.
(Fig.4)
5.
Removal
of
MR
-E
Circuit
Board
•
Pull
out
the
volume
knobs
a
and
slide
knob.
(Fig.2)
•
Remove
the
hexagonal
nuts.
(Fig.2)
•
Remove
the
Bottom
board.
(see
procedure
1)
•
The
MR
-E
circuit
board
can
be
removed
by
removing
the
2
bind
tapping
screws
OF
(3x8).
6.
Removal
of
MR
-G
Circuit
Board
•
Pull
out
the
volume
knobs
0
and
slide
knob.
(Fig.2)
•
Remove
the
hexagonal
nuts.
(Fig.2)
•
Remove
the
Bottom
board.
(see
procedure
1)
•
Remove
the
3
bind
tapping
screws
(G)
(3x8),
the
MR
-G
circuit
board
can
be
removed.
(Fig.4)
==.
MR
-C1
MR
-F
MR
-D
MR
G
O
O
MR
-E
F
p
O
II
O
El
O
O
S
MR
-C2
0
O
O
5
O
O
O
O
3.
MR
-C
1
,C
2
F
03$
LTi
•
d-:‘9
At24vIL
V.Y
-
7-Z
t
.
16tA6,
Afrit
1-
t•M-Ltt.
(Fig.2)
•
Ittfgt'ALtto
(
1
xI,-.)1fD
•
,
V3'
E/71
.,
-
;0
(3
x
8)
2*
.
M-L,
MR
-C1
(C
2,F)
t.ALtt.
(Fig.4)
4.
MR
-D—
1.0)51•L
'
•
TI
—
<'
T7
'Y
-
-
I
4
4NI
1
ssi
g
I
M
,
A
-
A1
-.
..;
(Fig.2)
•
aig
S1.Lt10
(1
*VIP,
)
•
V3'7
t°,
-
/7*
.
©
(3x8)
24M-1..,
MR-D
.
7i—
1-
.Y1
,,
Lt
-
tc,
(Fig.4)
5.
MR-Ef,—
F
05$
• 71-N
,
i)ey.z,sy-7,
-
ieLx,
-
V")
.-
7:1t.gl6R6,
j
-
--)
F
t•AL-tsto
(Fig.2)
•
laigt
.
31-L
t
▪
(
1
xIN()
•
h°:/7
;ICD
(3
x
8)
27#
AL,
1-
L.
tt.
(Fig.4)
6
.
F
OM-
L75
•
4'9e7.1-N'YV:','CILA',4
AfTI
)
(Fig.2)
•
laigAt-
t
•
(
1
xiVil.
3
,)
•
9 r
h°:/7
.
77
.
0
(3
x
8)
3*t
.
AL,
MR-G:i-
(Fig.4)
O
O
O
O
O
O
©
OF
0
Fig.
4