Sharp LC-20A2E (serv.man2) Service Manual ▷ View online
LC-20A2E
5
OUTLINE DIMENSION FIGURE
Unit: mm
279.5/710
22.9/58.3
4.1/10.5
17.3/44
70.9/180
70.8/179.9
159.8/406
171.3/435
181.1/460
158.3/402
LC-20A2E
6
REMOVING OF MAJOR PARTS
1. Detach the terminal cover.
2. Remove the four lock screws from the table stand.
3. Remove the four lock screws each from the left and right speakers. Disconnect the connectors
2. Remove the four lock screws from the table stand.
3. Remove the four lock screws each from the left and right speakers. Disconnect the connectors
and detach the speaker assemblies.
4. Remove the ten lock screws from the terminals.
5. Remove the five lock screws from the cabinet B.
6. Undo the nine hooks off the cabinet B: Press the hook 6-1 first and then the hooks 6-2 thru
5. Remove the five lock screws from the cabinet B.
6. Undo the nine hooks off the cabinet B: Press the hook 6-1 first and then the hooks 6-2 thru
6-9 in this order. Detach the cabinet B.
7. Undo the four screw and three wire holders and peel off the 5 pieces of tape. Disconnect the
connection cables.
(Note: Some pieces of tape are located below the PWBs. To access such tape, detach the
(Note: Some pieces of tape are located below the PWBs. To access such tape, detach the
PWBs, peel off the tape and disconnect the cables.)
8. Disconnect the connectors from the PWBs.
3
3
3
3
1
2
5
4
4
6-2
6-3
6-4
6-5
6-6
6-7
6-8
6-9
6-1
Cabinet B
Speaker Assembly
(Right)
(Right)
Speaker Assembly
(Left)
(Left)
Terminal Cover
Table Stand
Table Stand (Cover)
Cabinet A
P4004
(OPERATION Unit)
(TERMINAL Unit)
P901
P903
P304
P7755
P902
P305
P3604
SC402
P3602
SC2001
SC801
P2003
P3603
SC1203
SC1201
P3601
SC801
(SUB Unit)
(INVERTER
Unit)
Unit)
(MAIN Unit)
Tape
Tape
Speaker (Right)
Connection Cable
Connection Cable
Speaker (Left)
Connection Cable
Connection Cable
Tape
WH
WH
7
7
8
8
LC-20A2E
7
12
13
12
13
9
10
11
13
13
14
9. Remove the four lock screws from the MAIN PWB.
10. Remove the four lock screws from the SUB PWB.
11. Remove the three lock screws from the INVERTER PWB.
12. Remove the lock screw from the TUNER PWB and the lock screw from the grounding terminal.
10. Remove the four lock screws from the SUB PWB.
11. Remove the three lock screws from the INVERTER PWB.
12. Remove the lock screw from the TUNER PWB and the lock screw from the grounding terminal.
Detach the reinforcement plate too.
13. Remove the two lock screws from the LCD display unit.
14. Remove the three lock screws from the SWITCH PWB.
14. Remove the three lock screws from the SWITCH PWB.
LC-20A2E
8
»
Precautions in handling the LCD panels
1. Work in a clean room (with humidities below 50%).
2. Be sure to wear an anti-static armband.
3. Handle the panels on an electroconductive mat.
4. Be careful not to fall, shake and shock the panels.
1. Work in a clean room (with humidities below 50%).
2. Be sure to wear an anti-static armband.
3. Handle the panels on an electroconductive mat.
4. Be careful not to fall, shake and shock the panels.
15. Remove the four lock screws from the front of the LCD display unit and
the three lock screws from its back. Detach the shielding plate.
16. Detach the two reflection sheets.
17. Detach the upper and lower lamps.
18. Remove the photoconductive plate.
19. Detach the top and bottom lamp reflection sheets.
20. Detach the top and bottom spacer.
21. Detach the ITO sheet.
22. Detach the diffusion sheet and
17. Detach the upper and lower lamps.
18. Remove the photoconductive plate.
19. Detach the top and bottom lamp reflection sheets.
20. Detach the top and bottom spacer.
21. Detach the ITO sheet.
22. Detach the diffusion sheet and
reflection/polarizing sheet.
Lamp (Upper)
(KLMP-0112CEZZ)
(KLMP-0112CEZZ)
Lamp Reflection Sheet 1
(PSHEP0223CEZZ)
(PSHEP0223CEZZ)
LCD Display Unit
Lamp (Lower)
(KLMP-0113CEZZ)
(KLMP-0113CEZZ)
Lamp Reflection Sheet 2
(PSHEP0224CEZZ)
(PSHEP0224CEZZ)
Spacer (Bottom)
Diffusion Sheet
Lamp Guide Plate
Spacer (Top)
Reflection/polarizing Sheet
Reflection Sheet
(PSHEP0187CEZZ)
(PSHEP0187CEZZ)
15
15
16
17
20
22
19
17
19
18
20
21
Reflection Sheet
(PSHEP0186CEZZ)
(PSHEP0186CEZZ)
Shielding Plate
ITO Sheet
LCD Display Unit
(Front)
(Front)
15
15
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