KLV-40W450A, KLV-46W450A, KLV-52W450A - Sony TV Service Manual (repair manual). Page 3

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1-1. Caution Handling of LCD Panel .................................... 3
1-2. Safety Check Out ........................................................... 3
1-3. Leakage Test ................................................................... 3
1-4. WARNING ! ................................................................... 3
1-5. Lead Free Information ................................................... 4

2-1. Overview of Control Buttons ......................................... 5
2-2. LED Display Specification ............................................ 5
2-3. LED Display Control ..................................................... 5
2-4. LED Pattern .................................................................... 5
2-5. Standby LED Error Display ........................................... 6

3-1. Rear Cover Removal ...................................................... 7
3-2. Stand Assy Removal ....................................................... 7
3-3. Switch Unit Removal ..................................................... 8
3-4. D5 Board Removal ......................................................... 8
3-5. BG1V Board Removal ................................................... 8
3-6. IP5 Board Removal ........................................................ 9
3-7. G5 and D4 Boards Removal .......................................... 9
3-8. Frame Removal .............................................................. 9
3-9. Speaker Removal .......................................................... 10
3-10. H3E and H4 boards Removal ...................................... 10
3-11. LCD Panel and Bezel Assy Removal ........................... 11

4-1. (KLV-40W450A) .......................................................... 13

4-1-1. Wire dressing overview ..................................... 13
4-1-2. Connector Assy 30P to illumination logo

dressing .............................................................. 13

4-1-3. Connector Assy 30P to H3E board dressing ..... 13
4-1-4. Connector Assy 30P & SP Connector Assy

4P dressing ......................................................... 14

4-1-5. Connector Assy 30P & Sp Connector Assy 4P

at Frame Bottom dressing ................................. 14

4-1-6. Connector Assy 4P & Connector Assy 30P

at T-CON dressing ............................................. 15

4-1-7. Main board harness dressing overview ............. 15
4-1-8. SP Connector Assy 4P & Connector Assy

30P dressing ....................................................... 15

4-1-9. Connector Assy 30P, Connector Assy

13P & LVDS Connector dressing ..................... 16

4-1-10. MDF Connector & Connector Assy

 7P dressing ........................................................ 16

4-1-11. AC inlet dressing ............................................. 16

4-2. (KLV-46W450A) .......................................................... 17

4-2-1. Wire Dressing Overview ................................... 17
4-2-2. Connector Assy 30P & SP Connector Assy

4P dressing ......................................................... 17

4-2-3. LVDS Connector & Center Frame dressing ..... 18
4-2-4. SP Connector Assy 4P & Connector

Assy 30P dressing .............................................. 18

4-2-5. Connector Assy 30P & Connector Assy

13P dressing ....................................................... 18

4-2-6. AC inlet dressing ............................................... 19
4-2-7. MDF Connector & Connector Assy

 9P dressing ........................................................ 19

4-3. (KLV-52W450A) .......................................................... 20

4-3-1. Wire Dressing Overview ................................... 20
4-3-2. Connector Assy 30P & SP Connector Assy

4P dressing ......................................................... 20

4-3-3. Connector Assy 30P & SP Connector Assy

4P at Frame Bottom dressing ............................ 21

4-3-4. Main board harness dressing overview ............. 21
4-3-5. SP Connector Assy 4P & Connector

Assy 30P dressing .............................................. 21

4-3-6. AC inlet dressing ............................................... 22
4-3-7. Dressing on center frame, spine frame & D5 ... 22
4-3-8. Dressing on G5 board ........................................ 23
4-3-9. MDF Connector & Connector Assy 7P

dressing .............................................................. 23

5-1. Accessing Diagnostic Menu ........................................ 24
5-2. Aging ............................................................................ 24
5-3. Resetting the User Menu- Factory Reset ..................... 25
5-4. White Balance Adjustment .......................................... 25
5-5. Board & Panel Replacement ........................................ 26

6-1. Block Diagram ............................................................. 27
6-2. Circuit Board Location ................................................. 27
6-3. Schematic Diagram ...................................................... 28
6-4. Printed Wiring Boards .................................................. 28
6-5. Semiconductor .............................................................. 28

7-1. (KLV-40W450A) .......................................................... 29

7-1-1. Rear Cabinet and Stand Assy ............................ 29
7-1-2. Chassis-1 ............................................................ 30
7-1-3. BG1V, H4 & H3E Boards, Speakers,

Bezel Assy and LCD Panel ............................... 31

7-2. (KLV-46W450A) .......................................................... 32

7-2-1. Rear Cabinet and Stand Assy ............................ 32
7-2-2. Chassis-1 ............................................................ 33
7-2-3. BG1V, H4 & H3E Boards, Speakers,

Bezel Assy and LCD Panel ............................... 34

7-3. (KLV-52W450A) .......................................................... 35

7-3-1. Rear Cabinet and Stand Assy ............................ 35
7-3-2. Chassis-1 ............................................................ 36
7-3-3. BGV1, D5, G5, D4, H4 & H3E Boards,

Speakers, Bezel Assy and LCD Panel ............... 37

.............................................. 38