KLV-L32MRX1, KLV-L42MRX1 - Sony TV Service Manual (repair manual). Page 2

Caution ................................................................

3

Specifications ......................................................

4

Connectors ..........................................................

5

Self Diagnosis .....................................................

6

1. GENERAL ...................................................................

7

2-1.

Display Unit-1 (LDM-3210) ..............................

21

  2-1-1.  Stand Assy and Rear Panel Removal ..............

21

  2-1-2.  DES and K Boards Removal ...........................

21

  2-1-3.  G1 Board Removal ..........................................

22

  2-1-4.  R1 and R2 Boards Removal ............................

22

  2-1-5.  LCD Panel Removal ........................................

23

2-2.

Display Unit-2 (LDM-4210) ..............................

24

  2-2-1.  Rear Cover Removal .......................................

24

  2-2-2.  K1 and K2 Boards Removal ...........................

24

  2-2-3.  DES Board Removal .......................................

25

  2-2-4.  G2 Board Removal ..........................................

25

  2-2-5.  R3 and R4 Boards Removal ............................

26

  2-2-6.  Display Panel Removal ...................................

26

2-3.

Media Receiver Unit (MBT-MRX1) ..................

27

  2-3-1.  Top Cover Removal .........................................

27

  2-3-2.  U2 Board Removal ..........................................

27

  2-3-3.  Baseplate and HMP Board Removal ...............

28

  2-3-4.  H5, H6 and H7 Board Removal ......................

28

  2-3-5.  G Board Removal ............................................

29

  2-3-6.  A1 Board Removal ..........................................

30

  2-3-7.  Service Position ...............................................

31

  2-3-8.  Service Connector for DIC Board ...................

31

  2-3-9.  LVDS Service Cable .......................................

31

2-4.

Cable Arrangements for Media Receiver

Unit (MBT-MRX1) ............................................

32

  2-4-1.  Front Panel Dressing .......................................

32

  2-4-2.  A1 Board Dressing ..........................................

32

  2-4-3.  A1 and G Board Dressing ...............................

32

  2-4-4.  LVDS  and Copper Tape Dressing .................

32

3-1.

White Balance Adjustment  .................................

33

4-1.

Block Diagrams ..................................................

34

  4-1-1.  Display Unit (LDM-3210/4210) .....................

34

  4-1-2.  Media Receiver Unit (MBT-MRX1) ..............

38

4-2.

Circuit Board Location ........................................

43

  4-2-1.  Display Unit (LDM-3210) ..............................

43

  4-2-2.  Display Unit (LDM-4210) ..............................

43

  4-2-3.  Media Receiver Unit (MBT-MRX1) ..............

43

4-3.

Schematic Diagrams and Printed Wiring

Boards .................................................................

43

  4-3-1.  Display Unit (LDM-3210/4210) .....................

44

  4-3-2.  Media Receiver Unit (MBT-MRX1) ..............

64

A1 Board Schematic Diagram ............................

64

A1 Printed Wiring Board   ..................................

76

G Board Schematic Diagram ..............................

78

G Printed Wiring Board   ....................................

79

H5 Board Schematic Diagram ............................

80

H5 Printed Wiring Board   ..................................

81

IF Board Schematic Diagram ..............................

82

IF Printed Wiring Board   ...................................

83

U2 Schematic Diagram .......................................

84

U2 Printed Wiring Board   ..................................

83

4-4.

Semiconductors ..................................................

85

5-1.

Display Unit (LDM-3210)   ...............................

88

  5-1-1.  Display Unit-1 .................................................

88

  5-1-2.  Display Unit-2 .................................................

89

5-2.

Display Unit (LDM-4210)   ...............................

90

  5-2-1.  Display Unit-1 .................................................

90

  5-2-2.  Display Unit-2 .................................................

91

  5-2-3.  Display Unit-3 .................................................

92

5-3.

Packing Materials for Display

Unit (LDM-3210)   .............................................

93

5-4.

Packing Materials for Display

Unit (LDM-4210)   .............................................

94

5-5.

Media Receiver Unit-1 (MBT-MRX1) ..............

95

5-6.

Media Receiver Unit-2 (MBT-MRX1) ..............

96

5-7.

Media Receiver Unit-3 (MBT-MRX1)   ............

97

5-8.

Packing Materials for Media Receiver

Unit (MBT-MRX1) ............................................

98

6. ELECTRICAL  PARTS  LIST 

6-1.

Display Unit (LDM-3210/4010)   ......................

99

6-2.

Media Receiver Unit (MBT-MRX1) .................. 124

SAFETY-RELATED COMPONENT WARNING !!

COMPONENTS IDENTIFIED BY SHADING AND MARKED

  

 

 ON

THE SCHEMATIC DIAGRAMS, EXPLODED VIEWS AND IN THE
PARTS LIST ARE CRITICAL FOR SAFE OPERATION. REPLACE
THESE COMPONENTS WITH SONY PARTS WHOSE PART
NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN
SUPPLEMENTS PUBLISHED BY SONY.

WARNING !!

AN ISOLATION TRANSFORMER SHOULD BE USED DURING
ANY SERVICE WORK TO AVOID POSSIBLE SHOCK HAZARD
DUE TO LIVE CHASSIS, THE CHASSIS OF THIS RECEIVER IS
DIRECTLY CONNECTED TO THE POWER LINE.