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SM-307H
©
DISASSEMBLY
Caution on Disassembly
Follow the below-mentioned
notes when disassem-
bling the unit and reassembling it, to keep its safety and
excellent performance:
(A)
x2
1. Be sure to remove the power supply plug from the
wall outlet before starting to disassemble the unit.
2. Take off nylon bands or wire holders where they
need
be removed
when
disassembling
the unit.
After servicing the unit, be sure to rearrange the
leads where they were before disassembling.
3. Take sufficient care on static electricity of integrated
circuits and other circuits when servicing.
4
x6mm
(C)X3
(D)X4
Cobinet
Figure 4-1
STEP
REMOVAL
PROCEDURE
FIGURE
1
Cabinet
1. Screw...
.....
eee
(A)x5;
4—1
|
2
Bottom Plate
1. Screw...
... 00.0008
(B)x8 | 4—2
3
Front Panel
1. Knob..............
(C)x3 | 4-1
2.\Nut o.oo
oes ciens4 (D)x1
3. Screw........2..0.
(E)x5 | 4—2
4. Socket
............
(G)x7|
4-3
{4
ee
a
er, Oe
Sf
4.
Control P.W.B
Te IOs
eu G ease ates (H)x3 | 4—5
5.
Switch P.W.B
Headphones P.W.B
7.
Indicator P.W.B
1. Screw.............
{K)x4.|
4—4
QZ AOOK seach clevided
oie (L)x13
8.
Socket P.W.B
1.Screw .........-.. (M)x12]|
4—4
(G)X1
* 1. Each P.W.B. should be removed until the parts to be
(G)X1
Ln
Baxi
|=- (} SOCKES
oy
SOCKET
SOCKET
exchanged can be removed when
servicing. If the
d
(G)x!
isi
parts to be exchanged
are in the exchangeable
(G)x1
GOK) Ne
Qf SOCKET
condition, the rest of P.W.Bs. need not to be removed.
aoa
SOCKET
t
a
a
[S|
INDICATOR
PWB
Figure 4-3
(L)X13
(H)
x3
SOCKET PWB
HEADPHONES
Ww
PWB
cs
e To remove the knob, remove the headphone PWB.
Figure 4-5
¢ To remove the socket PWB, at first remove the power
transformer,
and then shift it.
Figure 4-4
(Md
x12
#3X8mm
—4~
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