Panasonic TH-37PX60U, TH-42PX60U Service manual

Specifications

ORDER NO.MTNC060263C1

B19 Canada: B05

Digital High Definition Plasma Television

TH-37PX60U TH-42PX60U

GP9DU Chassis

Power Source AC 120 V, 50/60 Hz Power Consumption

Maximum 323 W (TH-37PX60U), 390 W (TH-42PX60U) Standby condition 0.2 W (TH-37PX60U), 0.2 W (TH-42PX60U)

Plasma Displ ay panel

Drive method AC type Aspect Ratio 16 : 9 Contrast Ratio 3000 : 1 Visible screen size

(No. of pixels)

Sound

Speaker 4.8 ” × 2.4 ” (120 mm × 60 mm) × 2 pcs, 8W

Audio Output 20 W [10 W + 10 W] (10 % THD) Channel Capability (Digital/Analog) VHF/UHF: 2 - 69, CATV: 1 - 135 Operating Conditions Temperature: 32 °F - 104 °F (0 °C - 40 °C)

Connection Terminals

INPUT 1-3 VIDEO: RCA PIN Type × 1 1.0 V [p-p] (75 W)

COMPONENT VIDEO

INPUT 1-2

HDMI 1-2 TYPE A Connector

94 cmV (TH-37PX60U), 106 cmV (TH-42PX60U)

32.2 ” × 18.2 ” × 37.0 ” (818 mm × 461 mm × 939 mm) (TH-37PX60U)

36.3 ” × 20.4 ” × 41.6 ” (920 mm × 518 mm × 1,056 mm) (TH-42PX60U) 737,280 (1,024 (W) × 720 (H)) [3,072 × 720 dots] (TH-37PX60U) 786,432 (1,024 (W) × 768 (H)) [3,072 × 768 dots] (TH-42PX60U)

Humidity: 20 % - 80 % RH (non-condensing)

S-VIDEO: Mini DIN 4-pin Y: 1.0 V [p-p] (75 W) C: 0.286 V [p-p] (75 W) AUDIO L-R: RCA PIN Type × 2 0.5 V [rms] Y: 1.0 V [p-p] (including synchronization) PB,PR: ± 0.35 V [p-p] AUDIO L-R: RCA PIN Type × 2 0.5 V [rms]

AUDIO L-R: RCA PIN Type × 2 0.5 V [rms]

TH-37PX60U / TH-42PX60U

Card slot SD CARD slot × 1 AV PROG. OUT VIDEO: RCA PIN Type × 1 1.0 V [p-p] (75 W)

DIGITAL AUDIO OUT PCM/Dolby Digital, Fiber Optic

FEATURES 3D Y/C FILTER

Dimensions (W × H × D)

Including pedestal 36.1 ” × 27.9 ” × 12.7 ” (917 mm × 708 mm × 321 mm) (TH-37PX60U)

TV Set only 36.1 ” × 25.4 ” × 3.8 ” (917 mm × 645 mm × 95 mm) (TH-37PX60U)

Weight

Including pedestal 61.7 lb. (28 kg) (TH-37PX60U), 70.5 lb. (32 kg) (TH-42PX60U) TV Set only 57.3 lb. (26 kg) (TH-37PX60U), 66.1 lb. (30 kg) (TH-42PX60U)

Note:

Design and Specifications are subject change without notice. Weight and Dimensions shown are approximate.

AUDIO L-R: RCA PIN Type × 2 0.5 V [rms]

CLOSED CAPTION V-Chip Photo Viewer

40.2 ” × 30.3 ” × 12.7 ” (1,020 mm × 768 mm × 321 mm) (TH-42PX60U)

40.2 ” × 27.8 ” × 3.8 ” (1,020 mm × 705 mm × 95 mm) (TH-42PX60U)

CONTENTS

Page Page

1 Applicable signals 5 2 Safety Precautions

2.1. General Guidelines

3 Prevention of Electro Static Discharge (ESD) to

Electrostatically Sensitive (ES) Devices 4 About lead free solder (PbF) 5 Service Hint 6 Plasma panel replacement method

6.1. Remove the Back cover

6.2. Remove the fan

6.3. Remove the rear terminal cover

6.4. Remove the P-Board

6.5. Remove the PA-Board

6.6. Remove the tuner unit

6.7. Remove the DT-Board

6.8. Remove the DG-Board

6.9. Remove the H-Board

6.10. Remove the HC-Board

6.11. Remove the D-Board

6.12. Remove the SU-Board (37inch)

6.13. Remove the SU-Board (42inch)

6.14. Remove the SD-Board (37inch)

6.15. Remove the SD-Board (42inch)

6.16. Remove the SC-Board

6.17. Remove the SS-Board

6.18. Remove the C1-Board

6.19. Remove the C2-Board

10 10 10 11 11 12 12 12 12 13 13 13 13 14 14

6.20. Remove the front bracket

6 7 8 9

9 9 9 9

6.21. Remove the G-Board, GK-Board and GS-Board

6.22. Remove the speaker L, R

6.23. Remove the S-Board

6.24. Remove the K-Board

6.25. Remove the stand brackets

6.26. Remove the Plasma panel section from the Front frame (glass)

6.27. Replace the plasma panel (finished)

7 Location of Lead Wiring

7.1. Lead of Wiring (1)

7.2. Lead of Wiring (2)

7.3. Lead of Wiring (3)

7.4. Lead of Wiring (4)

7.5. Lead of Wiring (5)

7.6. Lead of Wiring (6)

7.7. Lead of Wiring (7)

7.8. Lead of Wiring (8)

8 Self-check Function

8.1. Check of the IIC bus lines

8.2. Power LED Blinking timing chart

8.3. No Power

8.4. No Picture

8.5. Local screen failure

9 Serviceman Mode

9.1. How to enter into Serviceman Mode

9.2. Contents of adjustment mode

15 15 15 15 16 16

16 17

18 19 20 21 22 23 24 25

26 28 29 30 31

32 32

9.3. Memory edit mode 33

9.4. Device data mode

10 Adjustment Procedure

10.1. Driver Set-up

10.2. Initialization Pulse Adjust

10.3. P.C.B. (Printed Circuit Board) exchange

10.4. Adjustment Volume Location

10.5. Test Point Location

11 Adjustment

11.1. White balance adjustment

11.2. Sub bright adjustment

11.3. ABL operation level adjustment

12 Hotel mode 13 Conduct Views

13.1. P-Board (37inch)

13.2. P-Board (42inch)

13.3. PA-Board

13.4. H-Board

13.5. G and GS-Board

13.6. GK, HC, K and S-Board

13.7. DG-Board

13.8. DT-Board

13.9. D-Board

13.10. C1-Board (37inch)

13.11. C1-Board (42inch)

13.12. C2-Board (37inch)

13.13. C2-Board (42inch)

13.14. SC-Board

13.15. SU-Board (37inch)

13.16. SU-Board (42inch)

13.17. SD-Board (37inch)

13.18. SD-Board (42inch)

13.19. SS-Board

14 Schematic and Block Diagram

14.1. Schematic Diagram Notes

14.2. Main Block Diagram (37inch)

14.3. Main Block Diagram (42inch)

14.4. P-Board Block Diagram (37inch)

14.5. P-Board (1 of 6) Schematic Diagram (37inch)

14.6. P-Board (2 of 6) Schematic Diagram (37inch)

14.7. P-Board (3 of 6) Schematic Diagram (37inch)

14.8. P-Board (4 of 6) Schematic Diagram (37inch)

14.9. P-Board (5 of 6) Schematic Diagram (37inch)

14.10. P-Board (6 of 6) Schematic Diagram (37inch)

14.11. P-Board Block Diagram (42inch)

14.12. P-Board (1 of 6) Schematic Diagram (42inch)

14.13. P-Board (2 of 6) Schematic Diagram (42inch)

14.14. P-Board (3 of 6) Schematic Diagram (42inch)

14.15. P-Board (4 of 6) Schematic Diagram (42inch)

14.16. P-Board (5 of 6) Schematic Diagram (42inch)

14.17. P-Board (6 of 6) Schematic Diagram (42inch)

14.18. PA-Board Block Diagrarm

14.19. PA-Board (1 of 3) Schematic Diagram

14.20. PA-Board (2 of 3) Schematic Diagram

35 36 36 37 37

38 40 41

42 43

43 46 49 51 53 54 55 57 59 61 62 63 64 65 68 69 70 71 72

75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94

TH-37PX60U / TH-42PX60U

14.21. PA-Board (3 of 3) Schematic Diagram

14.22. H-Board Block Diagram

14.23. H-Board (1 of 3) Schematic Diagram

14.24. H-Board (2 of 3) Schematic Diagram

14.25. H-Board (3 of 3) Schematic Diagram

14.26. G, GK, HC, K and S-Board Block Diagram

14.27. G-Board Schematic Diagram

14.28. GK, K, HC and S-Board Schematic Diagram

14.29. DG-Board (1 of 3) Block Diagram

14.30. DG-Board (2 of 3) Block Diagram

14.31. DG-Board (3 of 3) Block Diagram

14.32. DG-Board (1 of 8) Schematic Diagram

14.33. DG-Board (2 of 8) Schematic Diagram

14.34. DG-Board (3 of 8) Schematic Diagram

14.35. DG-Board (4 of 8) Schematic Diagram

14.36. DG-Board (5 of 8) Schematic Diagram

14.37. DG-Board (6 of 8) Schematic Diagram

14.38. DG-Board (7 of 8) Schematic Diagram

14.39. DG-Board (8 of 8) Schematic Diagram

14.40. DT and GS-Board Block Diagram

14.41. DT-Board (1 of 6) Schematic Diagram

14.42. DT-Board (2 of 6) Schematic Diagram

14.43. DT-Board (3 of 6) and GS-Board Schematic Diagram

14.44. DT-Board (4 of 6) Schematic Diagram

14.45. DT-Board (5 of 6) Schematic Diagram

14.46. DT-Board (6 of 6) Schematic Diagram

14.47. D-Board Block Diagram

14.48. D-Board (1 of 6) Schematic Diagram

14.49. D-Board (2 of 6) Schematic Diagram

14.50. D-Board (3 of 6) Schematic Diagram

14.51. D-Board (4 of 6) Schematic Diagram

14.52. D-Board (5 of 6) Schematic Diagram

14.53. D-Board (6 of 6) Schematic Diagram

14.54. C1 and C2-Board Block Diagram

14.55. C1-Board (1 of 2) Schematic Diagram (37inch)

14.56. C1-Board (2 of 2) Schematic Diagram (37inch)

14.57. C1-Board (1 of 2) Schematic Diagram (42inch)

14.58. C1-Board (2 of 2) Schematic Diagram (42inch)

14.59. C2-Board (1 of 2) Schematic Diagram (37inch)

14.60. C2-Board (2 of 2) Schematic Diagram (37inch)

14.61. C2-Board (1 of 2) Schematic Diagram (42inch)

14.62. C2-Board (2 of 2) Schematic Diagram (42inch)

14.63. SC, SU and SD-Board Block Diagram (37inch)

14.64. SC, SU and SD-Board Block Diagram (42inch)

14.65. SC-Board (1 of 2) Schematic Diagram

14.66. SC-Board (2 of 2) Schematic Diagram

14.67. SU-Board (1 of 2) Schematic Diagram (37inch)

14.68. SU-Board (2 of 2) Schematic Diagram (37inch)

14.69. SU-Board (1 of 2) Schematic Diagram (42inch)

14.70. SU-Board (2 of 2) Schematic Diagram (42inch)

14.71. SD-Board (1 of 2) Schematic Diagram (37inch)

14.72. SD-Board (2 of 2) Schematic Diagram (37inch)

14.73. SD-Board (1 of 2) Schematic Diagram (42inch)

14.74. SD-Board (2 of 2) Schematic Diagram (42inch)

95 96 97 98

99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148

TH-37PX60U / TH-42PX60U

14.75. SS-Board Block Diagram 149

14.76. SS-Board Schematic Diagram

15 Parts Locatio n & Mech anica l Replaceme n t Parts List

15.1. Parts Location

15.2. Packing Exploded Views

150

151

151 152

15.3. Mechanical Replacement Parts List

16 Elect ri cal Replacement Parts List

16.1. Replacement Parts List Notes

16.2. Electrical Replacement Parts List (TH-37PX60U)

16.3. Electrical Replacement Parts List (TH-42PX60U)

153

154

154 155 183

TH-37PX60U / TH-42PX60U

1 Applicable signals

2 Safety Precautions

2.1. 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.

3. After servicing, make the following leakage current checks to prevent the customer from being exposed to shock hazards.

2.1.1. Leakage Current Cold Check

1. Unplug the AC cord and connect a jumper between the two prongs on the plug.

2. Measure the resistance value, with an ohmmeter, between the jumpered AC plug and each exposed metallic cabinet part on the equipment such as screwheads, connectors, control shafts, etc. When the exposed metallic part has a return path to the chassis, the reading should be between 1MW and 5.2MW.

When the exposed metal does not have a return path to

the chassis, the reading must be

Figure 1

2.1.2. Leakage Current Hot Check (See Figure 1.)

1. Plug the AC cord directly into the AC outlet. Do not use an

isolation transformer for this check.

2. Connect a 1.5kW, 10 watts resistor, in parallel with a 0.15µF

capacitors, between each exposed metallic part on the set and a good earth ground such as a water pipe, as shown in Figure 1.

3. Use an AC voltmeter, with 1000 ohms/volt or more

sensitivity, to measure the potential across the resistor.

4. Check each exposed metallic part, and measure the

voltage at each point.

5. Reverse the ACplugintheAC outlet andrepeateach of the

above measurements.

6. The potential at any point should not exceed 0.75 volts

RMS. A leakage current tester (Simpson Model 229 or equivalent) may be used to make the hot checks, leakage current must not exceed 1/2 milliamp. In case a measurement is outside of the limits specified, there is a possibility of a shock hazard, and the equipment should be repaired and rechecked before it is returned to the customer.

TH-37PX60U / TH-42PX60U

3 Prevention of Electro Static 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. The following techniques should be used to help reduce the incidence of component damage caused by electro static discharge (ESD).

1. Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain off any ESD on your body by touching a known earth ground. Alternatively, obtain and wear a commercially available discharging ESD wrist strap, which should be removed for potential shock reasons prior to applying power to the unit under test.

2. After removing an electrical assembly equipped with ES devices, place the assembly on a conductive surface such as alminum foil, to prevent electrostatic charge buildup or exposure of the assembly.

3. Use only a grounded-tip soldering iron to solder or unsolder ES devices.

4. Use only an anti-static solder removal device. Some solder removal devices not classified as "anti-static (ESD protected)" can generate electrical charge sufficient to damage ES devices.

5. Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ES devices.

6. Do not remove a replacement ES device from its protective package until immediately before you are ready to install it. (Most replacement ES devices are packaged with leads electrically shorted together by conductive foam, alminum foil or comparable conductive material).

7. Immediately before removing the protective material from the leads of a replacement ES device, touch the protective material to the chassis or circuit assembly into which the device will be installed.

Caution

Be sure no power is applied to the chassis or circuit, and observe all other safety precautions.

8. Minimize bodily motions when handling unpackaged replacement ES devices. (Otherwise hamless motion such as the brushing together of your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity (ESD) sufficient to damage an ES device).

TH-37PX60U / TH-42PX60U

4 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). That is Tin (Sn), Silver (Ag) and Copper (Cu) although other types are available.

This model uses Pb Free solder in it’s manufacture due to environmental conservation issues. For service and repair work, we’d suggest the use of Pb free solder as well, although Pb solder may be used.

PCBs manufactured using lead free solder will have the PbF within a leaf Symbol

Caution

· Pb free solder has a higher melting point than standard solder. Typically the melting point is 50 ~ 70 °F (30~40 °C) higher.

Please use a high temperature soldering iron and set it to 700 ± 20 °F (370 ± 10 °C).

· Pb free solder will tend to splash when heated too high (about 1100 °F or 600 °C).

If you must use Pb solder, please completely remove all of the Pb free solder on the pins or solder area before applying Pb solder. If this is not practical, be sure to heat the Pb free solder until it melts, before applying Pb solder.

· After applying PbF solder to double layered boards, please check the component side for excess solder which may flow onto

the opposite side. (see figure below)

Suggested Pb free solder

There are several kinds of Pb free solder available for purchase. This product uses Sn+Ag+Cu (tin, silver, copper) solder. However, Sn+Cu (tin, copper), Sn+Zn+Bi (tin, zinc, bismuth) solder can also be used.

stamped on the back of PCB.

TH-37PX60U / TH-42PX60U

5 Service Hint

Board Name Function Board Name Function

P Power Supply SC Scan Drive

PA DC-DC Converter,

Speaker out, Audio AMP, Fan Control

H AV Terminal, AV Switch SS Sustain Drive DG Digital Signal Processor, Micom, HDMI Interface K Remote receiver, Power LED DT ATSC Interface S Power Switch

D Format Converter, Plasma AI, Sub-Field Processor G Front Terminal HC Jig Connection GS SD Card Slot C1 Data Driver (Lower Right) GK Key Switch C2 Data Driver (Lower Left)

SU Scan out (Upper) SD Scan out (Lower)

6 Plasma panel replacement method

TH-37PX60U / TH-42PX60U

6.1. Remove the Back cover

1. See Service Hint (Section 5)

6.2. Remove the fan

1. Disconnect the relay couplers.

2. Remove the screws (×3

each) and remove the fans.

6.3. Remove the rear terminal cover

1. Remove the screws (×8 ,×5 ,×2 ).

2. Remove the rear terminal cover.

6.4. Remove the P-Board

Caution:

To remove P.C.B. wait 1 minute after power was off for discharge from electrolysis capacitors.

1. Unlock the cable clampers to free the cable.

2. Disconnect the couplers (P2, P5, P9, P10, P11, P12, P23,

and P25).

3. Remove the screws (×7

) and remove the P-Board.

TH-37PX60U / TH-42PX60U

6.5. Remove the PA-Board

1. Unlock the cable clampers to free the cable.

2. Disconnect the couplers (PA2, PA5, PA10, PA31, PA32, PA33, PA34 and PA40).

3. Disconnect the flexible cable (PA20).

4. Remove the screws (×4

5. Remove the PA-Board.

) and remove the earth cable.

6.6. Remove the tuner unit

1. Unlock the cable clampers to free the cable.

2. Disconnect the couplers (DG5, G51, GS52, PA40 and earth cable).

3. Disconnect the flexible cables (DG3 and PA20).

4. Remove the screws (×4

) remove the tuner unit.

6.7. Remove the DT-Board

1. Unlock the cable clampers to free the cable.

2. Disconnect the couplers (HC06 and DT10).

3. Remove the screws (×5 (Be careful the coupler (DT12-DG22) when remove the DT-

Board unit.)

) remove the DT-Board unit.

4. Disconnect the coupler (DT07)

5. Remove the screws (×2

6. Remove the DT-Board metal cover and DT-Board.

6.8. Remove the DG-Board

6.9. Remove the H-Board

1. Unlock the cable clampers to free the cable.

2. Disconnect the couplers (H2, H40 and H51).

3. Disconnect the flexible cable (H1).

4. Remove the screws (×6

) and remove the H-Board.

TH-37PX60U / TH-42PX60U

1. Remove the DT-Board. (See section 6.7.)

2. Remove the screws (×8 metal frame.

) and remove the DT-Board

3. Disconnect the coupler (DG2).

4. Disconnect the flexible cables (DG1, DG15 and DG20).

5. Remove the screw (×1

) remove the DG-Board.

TH-37PX60U / TH-42PX60U

6.10. Remove the HC-Board

6.12. Remove the SU-Board (37inch)

1. Disconnect the couple (HC06).

2. Disconnect the flexible cable (HC15).

3. Remove the screws (×2

) and remove the HC-Board.

6.11. Remove the D-Board

1. Remove the tuner unit. (See section 6.6.)

2. Disconnect the couplers (D5, D20 and D25).

3. Disconnect the flexible cables (D3, D31 and D32).

4. Remove the screws (×4

) and remove the D-Board.

1. Remove the screws (×2 ).

2. Remove the flexible cables (SU1, SU2 and SU3) and remove the bridge connector (SU45).

3. Slide the SU-Board to the left to disconnect from a coupler (SC41-SU41) on the SC-Board and remove the SU-Board.

6.13. Remove the SU-Board (42inch)

1. Remove the screws (×2 ).

2. Remove the flexible cables (SU1, SU2, SU3 and SU4) and remove the bridge connector (SU45).

3. Slide the SU-Board to the left to disconnect from a coupler (SC41-SU41) on the SC-Board and remove the SU-Board.

6.14. Remove the SD-Board (37inch)

TH-37PX60U / TH-42PX60U

6.16. Remove the SC-Board

1. Remove the screws (×2 ).

2. Remove the flexible cables (SD1, SD2 and SD3) and remove the bridge connector (SD46).

3. Slide the SD-Board to the left to disconnect from a coupler (SC42-SD42) on the SC-Board and remove the SD-Board.

1. Unlock the cable clampers to free the cable.

2. Disconnect the couplers (SC2, SC20 and SC23).

3. Remove the screws (×6

) and remove the SC-Board.

6.15. Remove the SD-Board (42inch)

1. Remove the screws (×2 ).

2. Remove the flexible cables (SD1, SD2, SD3 and SD4) and remove the bridge connector (SD46).

3. Slide the SD-Board to the left to disconnect from a coupler (SC42-SD42) on the SC-Board and remove the SD-Board.

6.17. Remove the SS-Board

1. Disconnect the couplers (SS11, SS12 and SS23).

2. Disconnect the flexible cables (SS41A, SS42A, SS43A and SS44A) (37inch).

Disconnect the flexible cables (SS41, SS42, SS43 and SS44) (42inch).

3. Remove the screws (×6

) and remove the SS-Board.

TH-37PX60U / TH-42PX60U

6.18. Remove the C1-Board

6.19. Remove the C2-Board

1. Remove the tuner unit. (See section 6.6.)

2. Unlock the cable clampers to free the cable.

3. Remove the flexible cables holder fastening screws (×8 ).

4. Disconnect the flexible cables (CB1, CB2, CB3 and CB4).

5. Disconnect the flexible cables (C11 and C12).

6. Remove the screws (×4

) and remove the C1-Board.

1. Remove the tuner unit. (See section 6.6.)

2. Unlock the cable clampers to free the cable.

3. Remove the flexible cables holder fastening screws (×8 ).

4. Disconnect the flexible cables (CB5, CB6, CB7 and CB8).

5. Disconnect the flexible cables (C21 and C22).

6. Disconnect the coupler (C23).

7. Remove the screws (×4

) and remove the C2-Board.

6.20. Remove the front bracket

1. Unlock the cable clampers to free the cable.

2. Disconnect the couplers (GS52, G1 and G51).

3. Remove the screws (×5

) and remove the front bracket.

6.21. Remove the G-Board, GKBoard and GS-Board

TH-37PX60U / TH-42PX60U

6.22. Remove the speaker L, R

1. Remove the screws (×2 each) and remove the speaker L, R.

1. Remove the front bracket. (See section 6.20.)

2. Remove the screws (×3

3. Remove the screws (×3 ) and remove the front side metal frame.

4. Remove the screws (×5 ) and disconnect the couplers (G3-GK3).

5. Remove the G-Board, GK-Board and GS-Board.

) and remove the metal cover.

6.23. Remove the S-Board

1. Disconnect the coupler (S1).

2. Remove the screws(×2 frame.

3. Remove the screws (×2

) and remove the S-Board metal

) and remove the S-Board.

TH-37PX60U / TH-42PX60U

6.24. Remove the K-Board

1. Unlock the cable clampers to free the cable.

2. Disconnect the couplers (G1 and S1). (See section 6.20. and 6.23.)

3. Remove the screws (×2

) and remove the K-Board.

6.25. Remove the stand brackets

1. Remove the plasma panel section from the servicing stand and lay on a fiat surface such as a table (covered) with the plasma panel surface facing downward.

2. Remove the stand brackets (left, right)fastening screws (×5

each) and remove the stand brackets (left, right).

6.26. Remove the Plasma panel section from the Front frame (glass)

1. Remove the front frame and the plasma panel fastening

screws (×6

2. Remove the front frame and the stand brackets fastening

screws (×4

3. For leaving the plasma panel from the front frame, pull the

bottom of the front frame forward, lift, and remove.

6.27. Replace the plasma panel (finished)

1. Place the new plasma panel (finished) on the flat surface of

the table (covered by a soft cloth), with the plasma panel surface facing downward.

2. Attach the C1-Board and the C2-Board, connect the flexible

cables (×8) from the Plasma panel to the C1-Board and the C2-Board, and fit the flexible cable holders.

3. Attach the Hooks (left, right) and fit the stand brackets (L,

R) to the new plasma panel.

4. Place the plasma panel section on the servicing stand.

5. Attach the front frame and each P.C.Board and so on, to

the new plasma panel.

* When fitting the front frame, be careful to allow any debris, dust or handling residue to remain between the front glass and plasma panel.

TH-37PX60U / TH-42PX60U

7 Location of Lead Wiring

7.1. Lead of Wiring (1)

7.2. Lead of Wiring (2)

TH-37PX60U / TH-42PX60U

7.3. Lead of Wiring (3)

7.4. Lead of Wiring (4)

TH-37PX60U / TH-42PX60U

7.5. Lead of Wiring (5)

7.6. Lead of Wiring (6)

TH-37PX60U / TH-42PX60U

7.7. Lead of Wiring (7)

7.8. Lead of Wiring (8)

TH-37PX60U / TH-42PX60U

8 Self-check Function

Use the self-check function to test the unit.

1. Checking the IIC bus lines

2. Power LED Blinking timing

8.1. Check of the IIC bus lines

8.1.1. How to access

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.

8.1.2. Exit

Disconnect the AC cord from wall outlet.

8.1.3. Screen display

8.1.4. Check Point

Confirm the following parts if NG was displayed.

Display Ref.No. Description Board UV TU8200 TV Tuner DT-Board DT1 IC8211 Front Processor DT-Board DT2 IC8240 HDMSL PEAKS_Lite DT-Board SND IC2603 Sound Processor H-Board AVSWV IC2601 Video SW H-Board AVSWA IC2602 Audio SW H-Board ADV IC4019 10Bits A/D DG-Board GC5 IC4037 GC5 Processor DG-Board HDMI IC4026 HDMI I/F Reciever DG-Board MEM IC1102 EEPROM DG-Board RTC - - PANEL IC9003 MICOM D-Board

TH-37PX60U / TH-42PX60U

8.2. Power LED Blinking timing chart

1. Subject Information of LED Flashing timing chart.

2. Contents When an abnormality has occurred the unit, the protection circuit operates and reset to the stand by mode. At this time, the

defective block can be identified by the number of blinkes of the Power LED on the front panel of the unit.

8.3. No Power

First check point

There are following 2 states of No Power indication by power LED.

1. No lit

2. Red is lit then turns red blinking a few seconds later. (See 8.2.)

1. No lit

TH-37PX60U / TH-42PX60U

8.4. No Picture

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