Sharp SM-307H - Disassembly Procedure; Disassembly Precautions

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~