Panasonic TX-LR42U20 Service Manual
  1. Manuals
  2. Brands
  3. Panasonic Manuals
  4. LCD TV
  5. TX-LR42U20
  6. Service manual

Panasonic TX-LR42U20 Service Manual

Chassis: km09
Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual

TABLE OF CONTENTS

1 Safety Precautions----------------------------------------------- 4
1.1. General Guidelines---------------------------------------- 4
1.1.1. Leakage Current Cold Check---------------------- 4
1.) --------------------------------------------------------- 4
2 Warning -------------------------------------------------------------- 5
2.2. About lead free solder (PbF)---------------------------- 6
3 Service Navigation ----------------------------------------------- 7
3.1. Service Hint ------------------------------------------------- 7
4 Specifications ----------------------------------------------------- 8
5 Service Mode ------------------------------------------------------ 9
5.1. How to enter into Service Mode ----------------------- 9
5.1.1. Contents of adjustment mode --------------------- 9
5.1.2. How to exit---------------------------------------------- 9
5.2. SRV-TOOL -------------------------------------------------10
5.2.1. How to access ----------------------------------------10
5.2.2. Display of SOS History -----------------------------10
5.2.3. POWER ON TIME/COUNT -----------------------10
Model No.
Chassis:
Destination:
PAGE
5.2.4. Exit ------------------------------------------------------ 10
5.3. Service Mode Adjustment------------------------------ 11
5.3.1. Self Check Mode ------------------------------------ 11
5.3.2. Hotel Mode Adjustment ---------------------------- 11
5.3.3. Hotel Mode-------------------------------------------- 11
6 Troubleshooting Guide --------------------------------------- 12
6.1. Check of the IIC bus lines------------------------------ 12
6.1.1. How to access --------------------------------------- 12
6.1.2. Exit ------------------------------------------------------ 12
6.1.3. Screen display --------------------------------------- 12
6.1.4. Check Point ------------------------------------------- 12
6.2. Power LED Blinking timing chart --------------------- 13
6.3. No Power--------------------------------------------------- 13
7.1. AC Cord Dressing 1 ------------------------------------- 14
7.2. AC Cord Dressing 2 ------------------------------------- 15
7.3. AC Cord Installation ------------------------------------- 16
Installation ------------------------------------------------- 17
ORDER NO. MTV1001936CE
TX-LR42U20
KM09
CIS
© Panasonic Corporation 2010. Unauthorized
copying and distribution is a violation of law.
LCD TV
PAGE
&

Advertisement

Table of Contents
loading

Related Manuals for Panasonic TX-LR42U20

Summary of Contents for Panasonic TX-LR42U20

  • Page 1: Table Of Contents

    7.4. Control Panel Assembly & Clamper 5.2.2. Display of SOS History -----------------------------10 Installation ------------------------------------------------- 17 5.2.3. POWER ON TIME/COUNT -----------------------10 7.5. Side AV Preparation & Installation ------------------- 18 © Panasonic Corporation 2010. Unauthorized copying and distribution is a violation of law.
  • Page 2 TX-LR42U20 7.6. G Board & CI Slot Assembly -------------------------- 19 11.2.44. A Board - Sheet : 050 (3 / 4) --------------------- 74 7.7. Speaker Preparation & Installation------------------- 20 11.2.45. A Board - Sheet : 050 (4 / 4) --------------------- 75 7.8.
  • Page 3 TX-LR42U20 13.2.1. Replacement Parts List Notes ------------------ 122 13.2.2. Electrical Replacement Parts List ------------- 123...

  • Page 4: Safety Precautions

    TX-LR42U20 1 Safety Precautions 1.1. General Guidelines 1. When servicing, observe the original lead dress. If a short circuit is found, replace all parts which have been overheated or damaged by the short circuit. 2. After servicing, see to it that all the protective devices such as insulation barriers, insulation papers shields are properly installed.

  • Page 5: Warning

    TX-LR42U20 2 Warning 2.1. Prevention of Electrostatic Discharge (ESD) to Electrostatically Sensitive (ES) Devices Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called Electrostatically Sensitive (ES) Devices. Examples of typical ES devices are integrated circuits and some field-effect transistors and semiconductor [chip] components.

  • Page 6: About Lead Free Solder (Pbf)

    TX-LR42U20 2.2. About lead free solder (PbF) Note: Lead is listed as (Pb) in the periodic table of elements. In the information below, Pb will refer to Lead solder, and PbF will refer to Lead Free Solder. The Lead Free Solder used in our manufacturing process and discussed below is (Sn+Ag+Cu).

  • Page 7: Service Navigation

    TX-LR42U20 3 Service Navigation 3.1. Service Hint Board Main Device A BOARD AVSW, TUN, OFDM, ADV, P-AVC, GENX, EEP, TEMP P BOARD Power Supply V BOARD Remote, LED, Luminunce Sensor K BOARD KEY, Power SW...

  • Page 8: Specifications

    TX-LR42U20 4 Specifications Power Source AC SINGLE 220-240 V, 50 / 60 Hz Power Consumption Average use 184 W Standby Condition 0.4 W Display panel Aspect Ratio 16:9 Visible screen size 106 cm (diagonal) 930 mm (W) × 523 mm (H) 2,073,600 (1,920 (W) ×...

  • Page 9: Service Mode

    TX-LR42U20 5 Service Mode 5.1. How to enter into Service Mode While pressing [VOLUME ( - )] button of the main unit, press [INFO] button of the remote control three times within 2 seconds. Contents of adjustment mode 5.1.1. • Value is shown as a hexadecimal number.

  • Page 10: Srv-Tool

    TX-LR42U20 5.2. SRV-TOOL 5.2.1. How to access 1. Select [SRV-TOOL] in Service Mode. 2. Press [OK] button on the remote control. 5.2.2. Display of SOS History SOS History (Number of LED blinking ) indication. From left side; Last SOS, before Last, three occurrence before, 2nd occurrence after shipment, 1st occurrence after shipment.

  • Page 11: Service Mode Adjustment

    TX-LR42U20 5.3. Service Mode Adjustment Set timer to 30min, press the ‘RECALL’ button on the remote control and press ‘-’ vol button on the LCD panel. • Press button R and G for adjustment. 5.3.1. Self Check Mode 1. Press the ‘MENU’ button (on the remote control) and the ‘DOWN’ button on the LCD panel.

  • Page 12: Troubleshooting Guide

    TX-LR42U20 6 Troubleshooting Guide Use the self-check function to test the unit. 1. Checking the IIC bus lines 2. Power LED Blinking timing 6.1. Check of the IIC bus lines 6.1.1. How to access Self-check indication only: Produce TV reception screen, and while pressing [VOLUME ( - )] button on the main unit, press [OK] button on the remote control for more than 3 seconds.

  • Page 13: Power Led Blinking Timing Chart

    TX-LR42U20 6.2. Power LED Blinking timing chart 1. Subject Information of LED Flashing timing chart. 2. Contents When an abnormality occurs, the protection circuit will operate and reset the unit to stand by mode. During this time, the defective block can be identified by the number of blinking times of the Power LED on the front panel of the unit as follow:...

  • Page 14: Disassembly And Assembly Instructions

    TX-LR42U20 7 Disassembly and Assembly Instructions 7.1. AC Cord Dressing 1 1. Clamp plug with clamper. 2. Insert beads 3 pcs. And slide down to lower hole.

  • Page 15: Ac Cord Dressing

    TX-LR42U20 7.2. AC Cord Dressing 2 1. Clamp plug with clamper. 2. Insert beads 3 pcs. And slide down to lower hole. 3. Stick the FILAMENT TAPE.

  • Page 16: Ac Cord Installation

    TX-LR42U20 7.3. AC Cord Installation 1. Put on the AC CORD BRACKET on the CABINET. 2. Fix the AC CORD BRACKET with SCREW. 3. Insert AC CORD connector into P-PCB connector. 4. Clamp the AC CORD. 5. Insert AC CORD bushing into the AC CORD BRACKET.

  • Page 17: Control Panel Assembly & Clamper Installation

    TX-LR42U20 7.4. Control Panel Assembly & Clamper Installation 1. Put control panel Assy on the cabinet. 2. Fix the control panel with screws. Fix clamper at bottom mtg.

  • Page 18: Side Av Preparation & Installation

    TX-LR42U20 7.5. Side AV Preparation & Installation 1. Stick the side av indi. Sheet and felt on the side av bracket. 2. Insert the SIDE AV BRACKET from the side position of the A-PCB. 3. Fix the SCREW with A-PB-MTG METAL.

  • Page 19: G Board & Ci Slot Assembly

    TX-LR42U20 7.6. G Board & CI Slot Assembly Insert G board to Side AV bracket and stick CI slot cover follow below spec.

  • Page 20: Speaker Preparation & Installation

    TX-LR42U20 7.7. Speaker Preparation & Installation 1. Stick the SP sponge. 2. SP bracket put on cabinet. 3. Fix them with screws. 4. Insert the SP rubber bush into the SP unit. 5. Stick sponge at speaker. 6. Insert the SP unit to SP bracket.

  • Page 21: Lcd Panel Fixing & Handling Method

    TX-LR42U20 7.8. LCD Panel fixing & handling method 1. Place down the cabinet as shown below. 2. Fix LCD panel into the cabinet by taking below precautions. Other general precautions 1. Do not press panel surface to avoid blue spot on the panel display.

  • Page 22: Led Panel Installation

    TX-LR42U20 7.9. LED Panel Installation 1. Put LED SHADE RIB on CABINET. 2. Fix LED PANEL on CABINET. 3. Wire connecting. (V10) 4. Put V-PCB on CABINET. 5. Fix them with SCREW. 6. Insert the CLAMPER.

  • Page 23: Felt Sticking At Lvds Wire

    TX-LR42U20 7.10. Felt Sticking at LVDS Wire 1. Insert CN1~P4 wire to inveter. 2. Insert CN201~P3 wire to inveter and stick felt. 3. Stick felt LCD panel (Bottom left side). 4. Fix Top mtg and Bottom Mtg. 5. Fix Chassis frame bracket at Top Mtg and Bottom Mtg.

  • Page 24: Lcd Bracket And Mtg Installation

    TX-LR42U20 7.11. LCD Bracket and MTG Installation 1. Fix MASK BRACKET (SIDE/TOP/BTM) on the cabinet. 2. Fix Vertical Metal Bracket, Metal Support Bracket (R). 3. Fix them with SCREW. 4. Fix Clamper at Vertical Metal Bracket.

  • Page 25: Pedestal Assembly

    TX-LR42U20 7.12. Pedestal Assembly 1 1. Fix stand mtg spacer at pedestal cover. 2. Stick felt at front base plate. 3. Fix base plate at stand mtg and pedestal cover and screw. 4. Stick rubber foot at rotation plate. 5. Apply grease at rotation plate and bush (pede).

  • Page 26: Pedestal Assembly

    TX-LR42U20 Put Pedestal Assembly into polybag and fold properly 7.13. Pedestal Assembly 2 1. Lay down the unit so that the rear cover faces upward. 2. Remove the 4 screws. 3. Remove the pedestal. 7.14. Rear cover 1. Remove the 15 screws (A).

  • Page 27: Measurements And Adjustments

    TX-LR42U20 8 Measurements and Adjustments 8.1. Voltage chart of A-board Set A-Board to a dummy set and check the satisfaction with the specified voltage as following table. Power Supply Name Measurement Point Specification (V) SUB1.8V TP5601 1.74 - 1.90 SUB1.2V TP5600 1.18 - 1.32...

  • Page 28: Block Diagram

    TX-LR42U20 9 Block Diagram 9.1. Main Block Diagram...

  • Page 29: Wiring Connection Diagram

    TX-LR42U20 10 Wiring Connection Diagram 1. Fix PCB at chassis frame and mtg and screw. 2. Wiring No.1~No.6. 3. Remove dust of terminal of LVDS and PB connector. (by ion blow) 4. Remove dust of terminal of FFC and PB connector. (by ion blow) Pos.XH2 &...

  • Page 30: Schematic Diagram

    TX-LR42U20 11 Schematic Diagram 11.1. Schematic Diagram Notes...

  • Page 31: A Board

    TX-LR42U20 11.2. A Board 11.2.1. A Board - Sheet : 002 (1 / 7) <1A> <2A> <3A>...

  • Page 32: A Board - Sheet : 002 (2 / 7)

    TX-LR42U20 11.2.2. A Board - Sheet : 002 (2 / 7) <1A> <1B> <2A> <2B> <3B> <3A> <4B>...

  • Page 33: A Board - Sheet : 002 (3 / 7)

    TX-LR42U20 11.2.3. A Board - Sheet : 002 (3 / 7) <1B> <1C> <2B> <2C> <3B> <3C> <4B> <4C>...

  • Page 34: A Board - Sheet : 002 (4 / 7)

    TX-LR42U20 11.2.4. A Board - Sheet : 002 (4 / 7) <1C> <1D> <2C> <2D> <3C> <4C> <3D>...

  • Page 35: A Board - Sheet : 002 (5 / 7)

    TX-LR42U20 11.2.5. A Board - Sheet : 002 (5 / 7) <1D> <1E> <2D> <2E> <3D>...

  • Page 36: A Board - Sheet : 002 (6 / 7)

    TX-LR42U20 11.2.6. A Board - Sheet : 002 (6 / 7) <1E> <1F> <2E> <2F>...

  • Page 37: A Board - Sheet : 002 (7 / 7)

    TX-LR42U20 11.2.7. A Board - Sheet : 002 (7 / 7) <1F> <2F>...

  • Page 38: A Board - Sheet : 010 (1 / 4)

    TX-LR42U20 11.2.8. A Board - Sheet : 010 (1 / 4) <1A> <2A> <3A> <4A>...

  • Page 39: A Board - Sheet : 010 (2 / 4)

    TX-LR42U20 11.2.9. A Board - Sheet : 010 (2 / 4) <1B> <1A> <2B> <2A> <3B> <4B> <3A> <5B> <4A>...

  • Page 40: A Board - Sheet : 010 (3 / 4)

    TX-LR42U20 11.2.10. A Board - Sheet : 010 (3 / 4) <1B> <1C> <2B> <2C> <3B> <3C> <4B> <4C> <5C> <5B>...

  • Page 41: A Board - Sheet : 010 (4 / 4)

    TX-LR42U20 11.2.11. A Board - Sheet : 010 (4 / 4) <1C> <2C> <3C> <4C> <5C>...

  • Page 42: A Board - Sheet : 011 (1 / 4)

    TX-LR42U20 11.2.12. A Board - Sheet : 011 (1 / 4) <1A> <2A>...

  • Page 43: A Board - Sheet : 011 (2 / 4)

    TX-LR42U20 11.2.13. A Board - Sheet : 011 (2 / 4) <1B> <2B> <1A> <2A> <3B>...

  • Page 44: A Board - Sheet : 011 (3 / 4)

    TX-LR42U20 11.2.14. A Board - Sheet : 011 (3 / 4) <1B> <2B> <1C> <2C> <3B> <3C>...

  • Page 45: A Board - Sheet : 011 (4 / 4)

    TX-LR42U20 11.2.15. A Board - Sheet : 011 (4 / 4) <1C> <2C> <3C>...

  • Page 46: A Board - Sheet : 012 (1 / 5)

    TX-LR42U20 11.2.16. A Board - Sheet : 012 (1 / 5) <1A> <2A>...

  • Page 47: A Board - Sheet : 012 (2 / 5)

    TX-LR42U20 11.2.17. A Board - Sheet : 012 (2 / 5) <1A> <1B> <2A> <2B>...

  • Page 48: A Board - Sheet : 012 (3 / 5)

    TX-LR42U20 11.2.18. A Board - Sheet : 012 (3 / 5) <1C> <1B> <2B> <2C>...

  • Page 49: A Board - Sheet : 012 (4 / 5)

    TX-LR42U20 11.2.19. A Board - Sheet : 012 (4 / 5) <1C> <1D> <2C> <2D>...

  • Page 50: A Board - Sheet : 012 (5 / 5)

    TX-LR42U20 11.2.20. A Board - Sheet : 012 (5 / 5) <1D> <2D>...

  • Page 51: A Board - Sheet : 020 (1 / 6)

    TX-LR42U20 11.2.21. A Board - Sheet : 020 (1 / 6) <1A> <2A> <3A>...

  • Page 52: A Board - Sheet : 020 (2 / 6)

    TX-LR42U20 11.2.22. A Board - Sheet : 020 (2 / 6) <1B> <2B> <1A> <2A> <3B> <3A> <4B>...

  • Page 53: A Board - Sheet : 020 (3 / 6)

    TX-LR42U20 11.2.23. A Board - Sheet : 020 (3 / 6) <1B> <1C> <2B> <3B> <4B> <2C>...

  • Page 54: A Board - Sheet : 020 (4 / 6)

    TX-LR42U20 11.2.24. A Board - Sheet : 020 (4 / 6) <1C> <1D> <2D> <3D> <4D> <2C>...

  • Page 55: A Board - Sheet : 020 (5 / 6)

    TX-LR42U20 11.2.25. A Board - Sheet : 020 (5 / 6) <1E> <2E> <1D> <2D> <3D> <4D> <3E>...

  • Page 56: A Board - Sheet : 020 (6 / 6)

    TX-LR42U20 11.2.26. A Board - Sheet : 020 (6 / 6) <1E> <2E> <3E>...

  • Page 57: A Board - Sheet : 031 (1 / 5)

    TX-LR42U20 11.2.27. A Board - Sheet : 031 (1 / 5) <1A> <2A> <3A> <4A>...

  • Page 58: A Board - Sheet : 031 (2 / 5)

    TX-LR42U20 11.2.28. A Board - Sheet : 031 (2 / 5) <1B> <1A> <2A> <2B> <3A> <3B> <4A> <4B>...

  • Page 59: A Board - Sheet : 031 (3 / 5)

    TX-LR42U20 11.2.29. A Board - Sheet : 031 (3 / 5) <1B> <2B> <1C> <3B> <2C> <3C> <4B>...

  • Page 60: A Board - Sheet : 031 (4 / 5)

    TX-LR42U20 11.2.30. A Board - Sheet : 031 (4 / 5) <1D> <1C> <2D> <2C> <3D> <3C>...

  • Page 61: A Board - Sheet : 031 (5 / 5)

    TX-LR42U20 11.2.31. A Board - Sheet : 031 (5 / 5) <1D> <2D> <3D>...

  • Page 62: A Board - Sheet : 033 (1 / 3)

    TX-LR42U20 11.2.32. A Board - Sheet : 033 (1 / 3) <1A> <2A> <3A>...

  • Page 63: A Board - Sheet : 033 (2 / 3)

    TX-LR42U20 11.2.33. A Board - Sheet : 033 (2 / 3) <1B> <1A> <2B> <3B> <2A> <3A>...

  • Page 64: A Board - Sheet : 033 (3 / 3)

    TX-LR42U20 11.2.34. A Board - Sheet : 033 (3 / 3) <1B> <2B> <3B>...

  • Page 65: A Board - Sheet : 040 (1 / 7)

    TX-LR42U20 11.2.35. A Board - Sheet : 040 (1 / 7) <1A> <2A> <3A> <4A>...

  • Page 66: A Board - Sheet : 040 (2 / 7)

    TX-LR42U20 11.2.36. A Board - Sheet : 040 (2 / 7) <1B> <1A> <2B> <3B> <2A> <3A> <4B> <4A> <5B>...

  • Page 67: A Board - Sheet : 040 (3 / 7)

    TX-LR42U20 11.2.37. A Board - Sheet : 040 (3 / 7) <1B> <1C> <2B> <3B> <2C> <4B> <5B> <3C>...

  • Page 68: A Board - Sheet : 040 (4 / 7)

    TX-LR42U20 11.2.38. A Board - Sheet : 040 (4 / 7) <1C> <1D> <2D> <2C> <3C> <3D>...

  • Page 69: A Board - Sheet : 040 (5 / 7)

    TX-LR42U20 11.2.39. A Board - Sheet : 040 (5 / 7) <1D> <1E> <2E> <2D> <3D> <3E>...

  • Page 70: A Board - Sheet : 040 (6 / 7)

    TX-LR42U20 11.2.40. A Board - Sheet : 040 (6 / 7) <1E> <1F> <2E> <2F> <3E>...

  • Page 71: A Board - Sheet : 040 (7 / 7)

    TX-LR42U20 11.2.41. A Board - Sheet : 040 (7 / 7) <1F> <2F>...

  • Page 72: A Board - Sheet : 050 (1 / 4)

    TX-LR42U20 11.2.42. A Board - Sheet : 050 (1 / 4) <1A> <2A> <3A> <4A>...

  • Page 73: A Board - Sheet : 050 (2 / 4)

    TX-LR42U20 11.2.43. A Board - Sheet : 050 (2 / 4) <1A> <1B> <2A> <3A> <4A> <2B>...
  • Page 74 TX-LR42U20 11.2.44. A Board - Sheet : 050 (3 / 4) <1B> <1C> <2B> <2C>...
  • Page 75 TX-LR42U20 11.2.45. A Board - Sheet : 050 (4 / 4) <1C> <2C>...
  • Page 76 TX-LR42U20 11.2.46. A Board - Sheet : 060 (1 / 5) <1A> <2A> <3A> <4A> <5A>...
  • Page 77 TX-LR42U20 11.2.47. A Board - Sheet : 060 (2 / 5) <1A> <1B> <2B> <2A> <3A> <4A> <5A>...
  • Page 78 TX-LR42U20 11.2.48. A Board - Sheet : 060 (3 / 5) <1C> <1B> <2B> <2C>...
  • Page 79 TX-LR42U20 11.2.49. A Board - Sheet : 060 (4 / 5) <1C> <1D> <2D> <3D> <2C>...
  • Page 80 TX-LR42U20 11.2.50. A Board - Sheet : 060 (5 / 5) <1D> <2D> <2D>...
  • Page 81 TX-LR42U20 11.2.51. A Board - Sheet : 061 (1 / 2) <1A>...
  • Page 82 TX-LR42U20 11.2.52. A Board - Sheet : 061 (2 / 2) <1A>...
  • Page 83 TX-LR42U20 11.2.53. A Board - Sheet : 090 (1 / 5) <1A> <2A> <3A> <4A>...
  • Page 84 TX-LR42U20 11.2.54. A Board - Sheet : 090 (2 / 5) <1A> <1B> <2A> <3A> <4A> <2B>...
  • Page 85 TX-LR42U20 11.2.55. A Board - Sheet : 090 (3 / 5) <1C> <1B> <2C> <2B>...
  • Page 86 TX-LR42U20 11.2.56. A Board - Sheet : 090 (4 / 5) <1C> <1D> <2C> <2D> <3D> <4D>...
  • Page 87 TX-LR42U20 11.2.57. A Board - Sheet : 090 (5 / 5) <1D> <2D> <3D> <4D>...
  • Page 88 TX-LR42U20 11.2.58. A Board - Sheet : 200 (1 / 3) <1A>...
  • Page 89 TX-LR42U20 11.2.59. A Board - Sheet : 200 (2 / 3) <1B> <1A> <2B> <3B> <4B> <5B>...
  • Page 90 TX-LR42U20 11.2.60. A Board - Sheet : 200 (3 / 3) <1B> <2B> <3B> <4B> <5B>...
  • Page 91 TX-LR42U20 11.2.61. A Board - Sheet : 201 (1 / 3) <1A> <2A>...
  • Page 92 TX-LR42U20 11.2.62. A Board - Sheet : 201 (2 / 3) <1A> <2A> <1B> <2B>...
  • Page 93 TX-LR42U20 11.2.63. A Board - Sheet : 201 (3 / 3) <1B> <2B>...
  • Page 94 TX-LR42U20 11.2.64. A Board - Sheet : 300 (1 / 6) <1A> <2A>...
  • Page 95 TX-LR42U20 11.2.65. A Board - Sheet : 300 (2 / 6) <1A> <1B> <2B> <2A> <3B>...
  • Page 96 TX-LR42U20 11.2.66. A Board - Sheet : 300 (3 / 6) <1C> <1B> <2B> <3B> <2C>...
  • Page 97 TX-LR42U20 11.2.67. A Board - Sheet : 300 (4 / 6) <1C> <1D> <2C> <2D>...
  • Page 98 TX-LR42U20 11.2.68. A Board - Sheet : 300 (5 / 6) <1D> <1E> <2E> <3E> <4E> <2D>...
  • Page 99 TX-LR42U20 11.2.69. A Board - Sheet : 300 (6 / 6) <1E> <2E> <3E> <4E>...
  • Page 100 TX-LR42U20 11.2.70. A Board - Sheet : 700 (1 / 3) <1A> <2A> <3A> <4A> <5A>...
  • Page 101 TX-LR42U20 11.2.71. A Board - Sheet : 700 (2 / 3) <1A> <1B> <2A> <3A> <4A> <2B> <5A> <3B>...
  • Page 102 TX-LR42U20 11.2.72. A Board - Sheet : 700 (3 / 3) <1B> <2B> <3B>...
  • Page 103 TX-LR42U20 11.2.73. A Board - Sheet : 701 (1 / 2) <1A> <2A>...
  • Page 104 TX-LR42U20 11.2.74. A Board - Sheet : 701 (2 / 2) <1A> <2A>...
  • Page 105 TX-LR42U20 11.2.75. A Board - Sheet : 702 (1 / 2) <1A> <2A> <3A> <4A>...
  • Page 106 TX-LR42U20 11.2.76. A Board - Sheet : 702 (1 / 2) <1A> <2A> <3A> <4A>...
  • Page 107 TX-LR42U20 11.3. G Board 11.3.1. G Board (1 / 1)
  • Page 108 TX-LR42U20 11.4. K Board 11.4.1. K Board (1 / 2) <1A> <2A> <3A> <4A>...
  • Page 109 TX-LR42U20 11.4.2. K Board (2 / 2) <1A> <2A> <3A> <4A>...
  • Page 110 TX-LR42U20 11.5. P Board 11.5.1. P Board (1 / 3) <1A> <2A> <3A>...
  • Page 111 TX-LR42U20 11.5.2. P Board (2 / 3) <1A> <1B> <2A> <2B> <3A>...
  • Page 112 TX-LR42U20 11.5.3. P Board (3 / 3) <1B> <2B>...
  • Page 113 TX-LR42U20 11.6. V Board 11.6.1. V Board (1 / 3) <1A> <2A>...
  • Page 114 TX-LR42U20 11.6.2. V Board (2 / 3) <1A> <1B> <2B> <3B> <2A> <4B>...
  • Page 115 TX-LR42U20 11.6.3. V Board (3 / 3) <1B> <2B> <3B> <4B>...
  • Page 116 TX-LR42U20 12 Printed Circuit Board 12.1. A-Board A-Board (A Side) TNP4G468 Parts Location Ref. No Location Ref. No Location Ref. No Location Ref. No Location IC2950 IC3902 IC8200 IC8851 IC2951 IC3903 IC8300 IC8852 IC2952 IC5600 IC8301 IC9980 IC3000 IC5601 IC8302...
  • Page 117 TX-LR42U20 12.2. A-Board A-Board (B Side) TNP4G468 Parts Location Ref. No Location Ref. No Location Ref. No Location Ref. No Location IC1101 IC4801 IC5220 D3300 IC2301 IC4802 IC5416 IC3350 IC4803 IC8001 IC3904 IC4804 IC8402 IC3905 IC5000 IC8921 IC4800 IC5200...
  • Page 118 TX-LR42U20 12.3. G-Board G-Board (A Side) TNPA5231 Parts Location Ref. No Location Ref. No Location Ref. No Location D3701 D3706 D3709 D3702 D3707 D3710 D3703 D3708 D3711 12.4. G-Board G-Board (B Side) TNPA5231...
  • Page 119 TX-LR42U20 12.5. K-Board K-Board (A Side) TNPA4901 Parts Location Ref. No Location D2600 12.6. K-Board K-Board (B Side) TNPA4901 12.7. V-Board V-Board (A Side) TNPA4834 12.8. V-Board V-Board (B Side) TNPA4834...
  • Page 120 TX-LR42U20 12.9. P-Board P-Board (A Side) TNP4G478 Parts Location Ref. No Location Ref. No Location Ref. No Location Ref. No Location IC7201 D7002 D7310 D7420 IC7301 D7102 D7311 D7501 IC7401 D7204 D7312 D7503 IC7501 D7208 D7313 D7504 IC7601 D7207 D7314...
  • Page 121 TX-LR42U20 12.10. P-Board P-Board (B Side) TNP4G478 Parts Location Ref. No Location Ref. No Location Ref. No Location Ref. No Location IC7301 D7001 D7306 D7407 IC7401 D7002 D7307 D7408 D7102 D7314 D7420 D7204 D7323 D7501 D7207 D7401 D7503 D7208 D7402...
  • Page 122 TX-LR42U20 13 Exploded View and Replacement Parts List 13.1. Exploded View and Mechanical Replacement Parts List Please click the radio button for ‘Diagrams ll/Parts List’ on the menu bar. 13.2. Electrical Replacement Parts List 13.2.1. Replacement Parts List Notes...
  • Page 123 TX-LR42U20 13.2.2. Electrical Replacement Parts List Note: All part will be supplied by PAVCKM. Safety Ref. Part No. Part Name & Description Remarks Safety Ref. Part No. Part Name & Description Remarks C2909 F1G1C104A116 C 0.1UF, 16V C2910 F1G1C104A116 C 0.1UF, 16V...
  • Page 124 TX-LR42U20 Safety Ref. Part No. Part Name & Description Remarks Safety Ref. Part No. Part Name & Description Remarks C5008 F1J1A106A087 C 10UF, 10V C7308 F1J1H474A757 C 0.47UF , 50V C5012 F1H1A105A025 C 1UF , 10V C7309 F1J1C1050028 C 1UF , 16V...
  • Page 125 TX-LR42U20 Safety Ref. Part No. Part Name & Description Remarks Safety Ref. Part No. Part Name & Description Remarks C8029 F1G1C104A116 C 0.1UF, 16V C8107 F1G1C104A116 C 0.1UF, 16V C8030 F1G1C104A116 C 0.1UF, 16V C8108 F1G1C104A116 C 0.1UF, 16V C8031 F1G1C104A116 C 0.1UF, 16V...
  • Page 126 TX-LR42U20 Safety Ref. Part No. Part Name & Description Remarks Safety Ref. Part No. Part Name & Description Remarks C8923 F1G1C104A116 C 0.1UF, 16V D7518 B0JBSL000026 DIODE C8950 F1G1C103A116 C 0.01UF, 16V D7601 B0BA01000070 DIODE C9980 F1G1C104A116 C 0.1UF, 16V...
  • Page 127 TX-LR42U20 Safety Ref. Part No. Part Name & Description Remarks Safety Ref. Part No. Part Name & Description Remarks L4704 J0JYC0000068 COIL Q5055 B1ADCE000022 TRANSISTOR L4705 J0JYC0000068 COIL Q5240 DSC200100L TRANSISTOR L4706 J0JYC0000068 COIL Q5241 B1CHRE000005 TRANSISTOR L4707 J0JYC0000068 COIL...
  • Page 128 TX-LR42U20 Safety Ref. Part No. Part Name & Description Remarks Safety Ref. Part No. Part Name & Description Remarks R1187 D0GA273JA015 C 27KOHM ,J, 1/10W R2795 D0GA101JA015 C 100OHM ,J, 1/10W R1201 D0GAR00Z0001 C 0OHM ,J, 1/10W R2907 D0GAR00Z0001 C 0OHM ,J, 1/10W...
  • Page 129 TX-LR42U20 Safety Ref. Part No. Part Name & Description Remarks Safety Ref. Part No. Part Name & Description Remarks R4550 D0GA151JA015 C 150OHM,J, 1/2W R4858 EXB28VR000X C 0OHM ,J, 1/10W R4551 D0GA151JA015 C 150OHM,J, 1/2W R4860 D0GAR00Z0001 C 0OHM ,J, 1/10W...
  • Page 130 TX-LR42U20 Safety Ref. Part No. Part Name & Description Remarks Safety Ref. Part No. Part Name & Description Remarks R5604 D1BB2001A087 C 2KOHM ,J, 1/10W R7422 D0GD753JA052 C 75KOHM ,J, 1/8W R5605 D1BB2002A012 C 20KOHM ,J, 1/10W R7423 D0GD753JA052 C 75KOHM ,J, 1/8W...
  • Page 131 TX-LR42U20 Safety Ref. Part No. Part Name & Description Remarks Safety Ref. Part No. Part Name & Description Remarks R8322 ERJ2GEJ220X 220OHM ,J, 1/10W R8463 D0GA680JA015 C 68OHM ,J, 1/10W R8323 ERJ2GEJ220X 220OHM ,J, 1/10W R8464 D0GA680JA015 C 68OHM ,J, 1/10W...
  • Page 132 TX-LR42U20 Safety Ref. Part No. Part Name & Description Remarks Safety Ref. Part No. Part Name & Description Remarks R8649 ERJ2GEJ103X F 10KOHM ,J, 1/10W FL4804 EXC28CE201U CHOKE COIL R8652 ERJ2GEJ103X F 10KOHM ,J, 1/10W FL4805 EXC28CE201U CHOKE COIL R8655...
  • Page 133 Model No. : TX-LR42U20 Parts Location...
  • Page 134 Model No. : TX-LR42U20 Packing Exploded View 1...
  • Page 135 Model No. : TX-LR42U20 Packing Exploded View 2...
  • Page 136 Model No. : TX-LR42U20 Parts List Ref. Safety Part No. Part Name & Description Q'ty Remarks K1PY51Y00047 LVDS FFC K2CQ2YY00070 AC POWER CORD L0AA14B00006 SPEAKER UNIT L5EDDAT00008 LCD PANEL N2QAYB000494 REMOTE CONTROL TRANSMITTER TBL4GA0045 PEDESTAL ASSY TBL4GX0009 STAND MTG ASSY...

Table of Contents