Table of Contents
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Service Manual
SD-EX220H
Audio
CHAPTER 3.
MECHANISM BLOCKS
[1] Disassembly
Caution on Disassembly
Follow the below-mentioned notes when disassembling the unit and reassembling it, to keep it safe and ensure excellent performance:
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 to 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.
SD-EX220H
STEP
REMOVAL
1
Rear Cabinet
2
Main PWB/
Tuner Unit
(Note)
3
Front Panel
4
Power PWB
5
1-Bit Amp. Unit
6
Display PWB
7
Headphones PWB 1. Screw ...................... (G1) x1
8
Switch PWB
9
CD Mechanism
10
Protect Circuit
PWB/1-Bit Amp.
Shield Case
11
1-Bit Amp. PWB
Note:
1. After removing the connector for the optical pickup from the
connector, wrap the conductive aluminium foil around the front end
of the connector so as to protect the optical pickup from electro-
static damage.
(A1)x3
φ3x12mm
PROCEDURE
1. Screw ...................... (A1) x7
1. Screw ...................... (B1) x7
2. Jack Cover, Left ...... (B2) x1
3. Screw ...................... (B3) x4
4. Socket ..................... (B4) x9
5. Flat Cable ............... (B5) x1
1. Screw ...................... (C1) x5
2. Hook ........................ (C2) x1
3. Socket ..................... (C3) x1
1. Screw ...................... (D1) x6
2. Bracket .................... (D2) x1
1. Screw ...................... (E1) x2
1. Screw ....................... (F1) x6
2. Frame Support ......... (F2) x1
3. Screw ....................... (F3) x6
4. Socket ...................... (F4) x2
1. Screw ...................... (H1) x1
1. Screw ....................... (J1) x4
2. Screw ....................... (J2) x2
1. Screw ...................... (K1) x2
2. Socket ..................... (K2) x1
3. Screw ...................... (K3) x2
4. Bracket .................... (K4) x1
5. Screw ...................... (K5) x3
1. Screw ....................... (L1) x3
Front
Panel
Rear
Cabinet
(A1)x4
φ3x10mm
(B4)x5
1-Bit Amp.
Unit
Main PWB
Washer
(B1)x2
φ3x8mm
(B3)x1
φ3x10mm
(B3)x3
φ3x10mm
(E1)x2
φ3x6mm
1-Bit Amp. Unit
(C1)x2
φ3x10mm
Power PWB
(C1)x3
φ3x8mm
3 – 1
SD-EX220H
(B4)x3
(B5)x1
Front Panel
(B4)x1
Tuner Unit
(B2)x1
(B1)x4
φ3x10mm
(B1)x1
φ3x8mm
(D2)x1
(C3)x1
(D1)x6
φ3x10mm
Front
Panel
(C2)x1
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