Sharp LC-20B2EA (serv.man3) Service Manual ▷ View online
6
LC-20B2EA
REMOVING OF MAJOR PARTS
1. Remove the two back covers.
2. Remove the table stand fixing screws (4 pcs.).
3. Remove the cabinet B fixing screws (14 pcs.) and detach the cabinet.
(
3
: XBBSF30P06000,
3
: XEBSF40P16000)
4. Remove the reinforcement angle fixing screws (4 pcs.).
5. Detach the connector from each PWB.
Cabinet B
Table stand
Back cover
Back cover
1
1
2
3
3
3
3
3
3
3
3
Terminal PWB
Inverter-A
PWB
PWB
Inverter-B PWB
Main PWB
R/C Receiver PWB
Operation PWB
4
Reinforcement angle
5
5
5
5
5
5
5 5
5
5
5
5
5
5
5
5
5
5 5
5
5
5
7
LC-20B2EA
6. Remove the main PWB fixing screws (3 pcs.).
7. Remove the inverter-A PWB fixing screws (2 pcs.).
8. Remove the inverter-B PWB fixing screws (1 pc.).
9. Remove the chassis Frame-A fixing screws (3 pcs.).
10. Undo the hooks and slide the chassis frame B out of position. Take out the terminal PWB.
11. Remove the R/C receiver PWB fixing screws (2 pcs.).
12. Remove the operation PWB fixing screws (2pcs.).
13. Remove the 21-pin terminal fixing screw (2 pcs.).
6
9
9
7
8
13
Inverter-A
PWB
PWB
Main PWB
Chassis Frame-A
Chassis Frame-B
Terminal
PWB
PWB
Inverter-B
PWB
PWB
Operation PWB
12
11
10
R/C Receiver PWB
8
LC-20B2EA
Lamp Holder
Lamp Holder
LCD Display Unit
Prism Sheet
D-BEFM Sheet
ITO Sheet
Reflection Sheet
15
14
Diffusion Plate Cover
LCD Display Unit
(Front)
(Front)
13
13
15
Shielding Plate
Reflection Plate
Lamp Set-A
Lamp Set-B
»
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.
13.Remove the four screws and open the LCD display unit.
14.Detach the D-BEFM sheet, prism sheet, reflection sheet, ITO sheet and diffusion plate Cover.
14.Detach the D-BEFM sheet, prism sheet, reflection sheet, ITO sheet and diffusion plate Cover.
15.Remove the Lanp-holder fixing screws (6 pcs.).
Display