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9. Remove the two lock screws from the operation panel (top cover), and detach the operation panel (top cover).

10. Remove the two lock screws from the operation PWB, and detach the operation PWB.

11. Remove the lock screw from the shield, and detach the shield from the main PWB.

12. Remove the two lock screws from the R/C, LED PWB, and detach the R/C, LED PWB.

13. Remove the two lock screws each from the speaker boxes (left and right), and detach both the speaker boxes.

Speaker Box (R)

R/C, LED PWB

Analog PWB

Main PWB

Speaker Box (L)

Inverter PWB

Shield

Operation Panel (Top Cover)

Operation 
PWB

13

10

11

9

13

12

14. Remove the two lock screws from the inverter PWB, and detach the inverter PWB.
15. Remove the five lock screws from the main PWB, and undo the claws a and b. Detach the main PWB by lifting

the area around the claws and pulling the PWB out.

16. Remove the one lock screw from the card frame cover over, and detach the card frame cover.
17. Remove the two lock screws from the 21-pin terminal.
18. Remove the four lock screws from the analog PWB, and undo the claws c and d. Detach the chassis frame (right)

from the analog PWB by pulling out the terminals. In the same way, undo the claws e and f, and detach the
chassis frame (left) from the analog PWB by pulling out the terminals.

Note: When detaching the main PWB and analog PWB, be careful not to break the PWB-fixing claws.
19. Remove the one lock screw from the card LED PWB, and detach the card LED PWB.

Inverter PWB

Main PWB

Analog PWB

f

Chassis Frame (L)

Chassis Frame (R)

Card Frame Cover

Card LED PWB

15

15

18

19

14

17

16

e

a

b

c

d

»

Precautions in handling the liquid crystal panel
1. Handle it in a clean room. (above 50% humidity)
2. The worker must wear an earth band.
3. Be careful not to drop, vibrate and shock the panel.
4. Use an ionizer. (within 30 cm)

20. Remove the three lock screws from the liquid crystal panel, and detach the liquid crystal panel unit.
21. Remove the reflecting/polarizing sheet, prism sheet, diffusion sheet and diffusion plate.
22. Remove the lamp holder (top)-A, -B and the lamp holder (bottom) from the lamp unit assembly.
23. Remove the upper and lower reflection sheets from the back shield.

Reflection Sheet (Top)
   (PSHEPA103WJZZ)

Lamp Holder (Top)-B
   (LHLDZA212WJKZ)

Lamp Unit Ass'y
   (CLMP-A024WJ01)

Reflection Sheet (Bottom)
   (PSHEPA104WJZZ)

Lamp Holder (Bottom)
   (LHLDZA213WJKZ)

Back Shield
   (PSLDMA312WJFW)

Lamp Holder (Top)-A
   (LHLDZA211WJKZ)

Diffusion Sheet
   (PSHEPA127WJZZ)

Reflection/Defelction Sheet
   (PSHEPA101WJZZ)

Diffusion Plate
   (PCOVUA014WJZZ)

Prism Sheet
   (PSHEPA163WJZZ)

20" LCD Panel Unit

20

23

22

21

»

Precautions in servicing the B side (backside) of the main PWB unit

1. Disconnect the FFC (flat cable) from between the main PWB (SC1204) and the liquid crystal panel, and then

connect the service-specific extension FFC (flat cable) (QCNW-A556WJZZ).

2. Disconnect the FFC (flat cable) from between the main PWB (SC1201) and the liquid crystal panel, and then

connect the service-specific extension FFC (flat cable) (QCNW-A555WJZZ).

3. Disconnect only the SC1202 of the FFC (flat cable) from between the main PWB (SC1202) and the liquid crystal

panel, and then connect the service-specific extension FFC (flat cable) (QCNW-B784WJZZ).

4. Disconnect the P701 side of the lead from between the main PWB (P701) and the analog PWB, and then

connect the service-specific extension cord (QCNW-C086WJQZ).

5. Disconnect the FFC from between the main PWB (SC2001) and the analog PWB (SC3403), and then connect

the service-specific extension FFC (flat cable) (QCNW-A556WJZZ).

6. Disconnect the lead from between the main PWB (P2006) and the analog PWB (P1601), and then connect the

service-specific extension cord (QCNW-C498WJQZ).

7. Remove the lock screws from the main PWB, detach the PWB from the chassis frame, and then turn it over to

service.

»

Precautions in servicing the inverter PWB unit (backside)

8. Remove the wire holder, and disconnect the connecting cable.
9. Disconnect only the P3703 side of the lead from between the inverter PWB (P6706) and the analog PWB

(P3703), and then connect the service-specific extension cord (QCNW-C086WJQZ).

 10. Remove the lock screws from the inverter PWB, detach the PWB (be careful not to get close to the high-tension

area and its surrounding conductive parts), and then turn it over to service.

CN2

SC1202

P701 

SC1201

SC3403

P6706

P3703

SC1204

SC2001

CN3

P1601

P2006

P3704

Main PWB

Wire holder

Inverter PWB

4

5

6

2

1

3

9

Analog PWB

Inverter

PWB

(Side-B)

7

10

Main PWB

(Side-B)

8

Step

Part No.

Description

1

QCNW-A556WJZZ

Extension Cable 50-pin Main (SC1204)-LCD panel

2

QCNW-A555WJZZ

Extension Cable 20-pin Main (SC1201)-LCD panel

3

QCNW-B784WJZZ

Extension Cable 30-pin Main (SC1202)-LCD panel

4

QCNW-C086WJQZ

Extension Cable 10-pin Main (P701)-Analog (P3704)

5

QCNW-A556WJZZ

Extension Cable 50-pin Main (SC2001)-Analog (SC3403)

6

QCNW-C498WJQZ

Extension Cable 15-pin Main (P2006)-Analog (P1601)

9

QCNW-C086WJQZ

Extension Cable 10-pin Inverter (P6706)-Analog (P3703)