Sharp SD-AT50H (serv.man18) Service Manual ▷ View online
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SD-AT50H
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11
Remote control
1. Remote Control Transmitter
2. Display Brightness Select or Clock Display Button
3. TV Display Select Button
4. Direct Button
5. Direct Number Buttons
6. Disc Repeat Button
7. Disc A - B Repeat Button
8. DVD Menu Button
9. Cursor Button
2. Display Brightness Select or Clock Display Button
3. TV Display Select Button
4. Direct Button
5. Direct Number Buttons
6. Disc Repeat Button
7. Disc A - B Repeat Button
8. DVD Menu Button
9. Cursor Button
10. Disc Fast Reverse, Tuner Preset Down Button
11. Disc Stop Button
12. DVD Chapter Skip, CD/MP3 Disc Track Down or
11. Disc Stop Button
12. DVD Chapter Skip, CD/MP3 Disc Track Down or
Tuning Down Button
13. DVD Top Menu Button
14. Digital/Analog Input Select or Tuner Band Select Button
15. Timer Button
16. Sound Mode Select Buttons
17. Dynamic Sound Select Button
18. TV Input Select Button
19. Volume Up and Down Buttons
20. On/Stand-by Button
21. RDS Display Mode Select or DVD Audio Language Select or
14. Digital/Analog Input Select or Tuner Band Select Button
15. Timer Button
16. Sound Mode Select Buttons
17. Dynamic Sound Select Button
18. TV Input Select Button
19. Volume Up and Down Buttons
20. On/Stand-by Button
21. RDS Display Mode Select or DVD Audio Language Select or
CD Audio Output Select Button
22. RDS Programme Type/Traffic Information Search or
DVD Angle Button
23. RDS ASPM (Auto Station Programme Memory) or
DVD Subtitle Button
24. Clear Button
25. DVD Initial Setting Button
26. Amplifier Initial Setting Button
27. CD/MP3 Disc Play Mode Select Button
28. Return Button
29. Enter Button
30. Disc Fast Forward, Tuner Preset Up Button
31. DVD Chapter Skip, CD/MP3 Disc Track Up or Tuning Up Button
32. Disc Play Button
33. Function Button
34. DVD Frame Advance, Disc Pause Button
35. TV On/Stand-by Button
36. DVD Zoom Button
37. Black Level Select Button
38. TV Volume Up and Down Buttons
39. TV Channel Select Buttons
25. DVD Initial Setting Button
26. Amplifier Initial Setting Button
27. CD/MP3 Disc Play Mode Select Button
28. Return Button
29. Enter Button
30. Disc Fast Forward, Tuner Preset Up Button
31. DVD Chapter Skip, CD/MP3 Disc Track Up or Tuning Up Button
32. Disc Play Button
33. Function Button
34. DVD Frame Advance, Disc Pause Button
35. TV On/Stand-by Button
36. DVD Zoom Button
37. Black Level Select Button
38. TV Volume Up and Down Buttons
39. TV Channel Select Buttons
Buttons with "" mark in the illustration can be operated on the
remote control only.
remote control only.
SD-AT50H
– 6 –
1
Top Cabinet
1. Screw ...................... (A1) x5
6-1
2
Bottom Cabinet
1. Leg Cushion ............ (B1) x4
6-1
2. Screw ...................... (B2) x4
3. Screw ...................... (B3) x3
3. Screw ...................... (B3) x3
3
Rear Panel/
1. Screw ...................... (C1) x9
6-2
Tuner Unit
2. Flat Cable ............... (C2) x1
4
DSP PWB
1. Screw ...................... (D1) x2
6-2
2. Top Support Bracket ...... (D2) x1
3. Screw ...................... (D3) x2
3. Screw ...................... (D3) x2
6-3
4. PWB Holder ............ (D4) x1
5. Flat Cable ............... (D5) x3
5. Flat Cable ............... (D5) x3
5
Main PWB
1. Screw ...................... (E1) x4
6-3
6
Front Panel
1. Screw ....................... (F1) x4
6-3
2. Hook ......................... (F2) x2
7
Display PWB
1. Screw ...................... (G1) x6
6-4
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
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.
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.
Figure 6-3
STEP
REMOVAL
PROCEDURE
FIGURE
Figure 6-2
AV Control Unit
Figure 6-4
Figure 6-1
(A1)x5
ø
3x8mm
Front Panel
Bottom Cabinet
Top Cabinet
(B3)x3
ø
3x8mm
(B2)x4
ø
2x6mm
(B1)x4
(D1)x2
ø
3x8mm
(C1)x2
ø
3x8mm
(C1)x7
ø
3x8mm
Front Panel
Bottom Cabinet
Rear Panel
Tuner Unit
(D2)x1
(C2)x1
DSP PWB
(F1)x2
ø
3x8mm
(D3)x2
ø
3x10mm
(F1)x2
ø
3x8mm
(E1)x2
ø
3x10mm
(F2)x1
(D5)x2
(D5)x1
(F2)x1
(D4)x1
Main PWB
DSP PWB
Front
Panel
Panel
Lug Wire
Push
(E1)x2
ø
3x10mm
(G1)x6
ø
3x10mm
Display PWB
Front Panel
– 7 –
SD-AT50H
Figure 7-1
Figure 7-2
Figure 7-3
Figure 7-4
Figure 7-5
1
Rear Cover
1. Screw .................... (A1) x16
7-1
2
Subwoofer Stand 1. Screw ...................... (B1) x8
7-1
3
Amp. Unit
1. Screw ...................... (C1) x5
7-2
2. Socket ..................... (C2) x2
4
Power PWB
1. Screw ...................... (D1) x4
7-2
2. Socket ..................... (D2) x5
7-3
5
Limit PWB
1. Screw ...................... (E1) x2
7-3
6
1-Bit Amp. Unit
1. Screw ....................... (F1) x8
7-3
7
1-Bit Amp. Cover 1. Screw .................... (G1) x15
7-4
8
1-Bit Amp. PWB
1. Screw ...................... (H1) x6
7-5
9
Subwoofer
1. Screw ....................... (J1) x4
8-1
STEP
REMOVAL
PROCEDURE
FIGURE
Subwoofer/Amplifier Unit
(A1)x4
ø
3x16mm
(A1)x1
ø
3x12mm
(A1)x2
ø
3x8mm
(A1)x2
ø
3x8mm
(A1)x5
ø
3x12mm
(A1)x2
ø
3x16mm
(B1)x4
ø
4x16mm
(B1)x4
ø
4x16mm
Rear Cover
Front Panel
Subwoofer
Stand
Stand
(C2)x2
(D1)x4
ø
3x8mm
(C1)x5
ø
3x20mm
Power PWB
Subwoofer
Box
Box
(F1)x2
ø
3x8mm
(E1)x1
ø
3x10mm
(E1)x1
ø
3x8mm
(D2)x1
(D2)x1
(D2)x2
(D2)x1
(F1)x1
ø
3x8mm
(F1)x2
ø
3x8mm
(F1)x1
ø
3x10mm
(F1)x1
ø
3x8mm
(F1)x1
ø
3x8mm
Power PWB
Limit PWB
1-Bit Amp. Unit
(G1)x3
ø
3x12mm
(G1)x3
ø
3x12mm
(G1)x1
ø
3x12mm
(G1)x3
ø
3x12mm
(G1)x2
ø
3x12mm
(G1)x1
ø
3x12mm
(G1)x1
ø
3x12mm
(G1)x1
ø
3x8mm
1-Bit Amp. Cover
Washer
Washer
(H1)x3
ø
3x8mm
1-Bit Amp. PWB
(H1)x3
ø
3x8mm
Be careful of the
silicon grease.
silicon grease.
SD-AT50H
– 8 –
Figure 8-1
Figure 8-2
Subwoofer
(J1)x4
ø
4x16mm
Subwoofer
Box
Box
Screwdriver
Front
Panel
Panel
Subwoofer
Box
Box
(Note 1)
Wrap a slotted screwdriver with a waste cloth, etc. and insert
it into the gap to remove the front panel. Take great care not
to damage the subwoofer box.
Wrap a slotted screwdriver with a waste cloth, etc. and insert
it into the gap to remove the front panel. Take great care not
to damage the subwoofer box.
ADDITIONAL DESCRIPTION
Disassembling the top cabinet and bottom cabinet
Remove the 5 screws on the backside of the top cabinet. Raise the rear end by approx. 10 mm, the hooks of the front panel and
then move it backward by approx. 5 mm. Pushing the top of the front panel to separate from keep the top cabinet horizontal and
raise it right above to remove.
Remove the 4 cushions and the 4 screws. On the bottom cabinet push down around the center of the bottom cabinet with a steel
measure or like to remove the tab. Slide the bottom cabinet right backward to remove.
Remove the 5 screws on the backside of the top cabinet. Raise the rear end by approx. 10 mm, the hooks of the front panel and
then move it backward by approx. 5 mm. Pushing the top of the front panel to separate from keep the top cabinet horizontal and
raise it right above to remove.
Remove the 4 cushions and the 4 screws. On the bottom cabinet push down around the center of the bottom cabinet with a steel
measure or like to remove the tab. Slide the bottom cabinet right backward to remove.
Insert a steel measure and push down the bottom
cabinet to detach the hook.
cabinet to detach the hook.
The top cabinet is removed
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