Panasonic TH-50PX60U Service manual

Specifications

ORDER NO.MTNC060264CE

B19 Canada: B05

Digital High Definition Plasma Television

TH-50PX60U

GP9DU Chassis

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

Maximum 515 W Standby condition 0.2 W

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

Card slot SD CARD slot × 1

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

127 cmV

43.6 ” × 24.5 ” × 50.0 ” (1,106 mm × 622 mm × 1,269 mm) 1,049,088 (1,366 (W) × 768 (H)) [4,098 × 768 dots]

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-50PX60U

DIGITAL AUDIO OUT PCM/Dolby Digital, Fiber Optic

FEATURES 3D Y/C FILTER

Dimensions (W × H × D)

Including pedestal 47.7 ” × 34.8 ” × 14.6 ” (1,210 mm × 882 mm × 371 mm) TV Set only 47.7 ” × 32.2 ” × 3.8 ” (1,210 mm × 818 mm × 95 mm)

Weight

Including pedestal 93.7 lb. (42.5 kg) TV Set only 88.2 lb. (40 kg)

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

CONTENTS

Page Page

1 Applicable signals 4 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

6.13. Remove the SD-Board

6.14. Remove the SC-Board

6.15. Remove the SS2-Board

6.16. Remove the SS3-Board

6.17. Remove the SS-Board

6.18. Remove the C1-Board

6.19. Remove the C2-Board

6.20. Remove the C3-Board

6.21. Remove the stand brackets

6.22. Remove the C4-Board

6.23. Remove the C5-Board

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

5 6 7 8

8 8 8 8 9 9

6.24. Remove the C6-Board

6.25. Remove the front bracket

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

6.27. Remove the speaker L, R

6.28. Remove the S-Board

6.29. Remove the K-Board

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

6.31. 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)

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

9.3. Memory edit mode

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

14 15 15 15 15 16

16 16

17 18 19 20 21 22

23 25 26 27 28

29 29 30 31

32 33 33

10.4. Adjustment Volume Location 34

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

13.2. PA-Board

13.3. H-Board

13.4. G and GS-Board

13.5. GK, HC, K and S-Board

13.6. DG-Board

13.7. DT-Board

13.8. D-Board

13.9. C1-Board

13.10. C2-Board

13.11. C3-Board

13.12. C4-Board

13.13. C5-Board

13.14. C6-Board

13.15. SC-Board

13.16. SU-Board

13.17. SD-Board

13.18. SS-Board

13.19. SS-Board

14 Block and Sche matic Diagram

14.1. Schematic Diagram Note

14.2. Main Block Diagram

14.3. P-Board Block Diagram

14.4. P-Board (1 of 2) Schematic Diagram

14.5. P-Board (2 of 2) Schematic Diagram

14.6. PA-Board Block Diagram

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

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

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

14.10. H-Board Block Diagram

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

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

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

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

14.15. G-Board Schematic Diagram

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

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

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

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

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

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

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

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

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

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

35 37 38

39 41

41 44 46 48 49 50 52 54 56 57 58 59 60 61 62 65 66 67 69

71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93

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

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

14.28. DT and GS-Board Block Diagram

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

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

14.31. DT-Board (3 of 6) Schematic Diagram

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

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

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

14.35. D-Board (1 of 2) Block Diagram

14.36. D-Board (2 of 2) Block Diagram

14.37. D-Board (1 of 8) Schematic Diagram

14.38. D-Board (2 of 8) Schematic Diagram

14.39. D-Board (3 of 8) Schematic Diagram

14.40. D-Board (4 of 8) Schematic Diagram

14.41. D-Board (5 of 8) Schematic Diagram

14.42. D-Board (6 of 8) Schematic Diagram

14.43. D-Board (7 of 8) Schematic Diagram

14.44. D-Board (8 of 8) Schematic Diagram

14.45. C1, C2, C5 and C6-Block Diagram

14.46. C3, C4, SS, SS2 and SS3-Board Block Diagram

14.47. C1-Board (1 of 2) Schematic Diagram

14.48. C1-Board (2 of 2) Schematic Diagram

14.49. C2-Board (1 of 3) Schematic Diagram

14.50. C2-Board (2 of 3) Schematic Diagram

14.51. C2-Board (3 of 3) Schematic Diagram

14.52. C3-Board (1 of 2) Schematic Diagram

14.53. C3-Board (2 of 2) Schematic Diagram

14.54. C4-Board (1 of 2) Schematic Diagram

14.55. C4-Board (2 of 2) Schematic Diagram

14.56. C5-Board (1 of 3) Schematic Diagram

14.57. C5-Board (2 of 3) Schematic Diagram

14.58. C5-Board (3 of 3) Schematic Diagram

14.59. C6-Board (1 of 2) Schematic Diagram

14.60. C6-Board (2 of 2) Schematic Diagram

14.61. SS, SS2 and SS3-Board Schematic Diagram

14.62. SC, SU and SD-Board Block Diagram

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

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

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

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

14.67. SD-Board (1 of 2) Schematic Diagram

14.68. SD-Board (2 of 2) Schematic Diagram

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

15.1. Parts Location

15.2. Packing Exploded Views

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

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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

139 140 141

142

142 143

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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-50PX60U

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-50PX60U

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.

5 Service Hint

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Board Name Function Board Name Function

P Power Supply C1 Data Driver (Upper Right)

PA DC-DC Converter

Speaker out, Audio AMP, Fan Control

H AV Terminal, AV Switch C4 Data Driver (Lower Left) DG Digital Signal Processor, Micom, HDMI Interface C5 Data Driver (Lower Center) DT ATSC Interface C6 Data Driver (Lower Right)

D Format Converter, Plasma AI, Sub-Field Processor SC Scan Drive GS SD Card Slot SU Scan out (Upper)

K Remote receiver, Power LED SD Scan out (Lower)

S Power Switch SS Sustain Drive

G Front Terminal SS2 Sustain Connector (Upper) GK Key Switch SS3 Sustain Connector (Lower) HC Jig Connection

C2 Data Driver (Upper Center) C3 Data Driver (Upper Left)

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6 Plasma panel replacement method

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.

6.4. Remove the P-Board

Caution:

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

1. Disconnect the couplers (P2, P5, P9, P10, P11, P12, P23 and P25).

2. Remove the screws (×6

) and remove the P-Board unit.

6.3. Remove the rear terminal cover

1. Remove the screws (×8 ,×5 ,×2 ).

2. Remove the rear terminal cover.

3. Remove the screws (×9 ) on the back side.

4. Remove the screws (×5 ).

5. Remove the molding props (×8

6. Remove the P-Board.

Note:

When assembling the P-Board, the position of each hole of the insulation sheets (A and B) is set to the position of each hole of the P-Board, then assemble them. ( indicate setting positions.)

marks

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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.

TH-50PX60U

6.7. Remove the DT-Board

6.8. Remove the DG-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.

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

2. Remove the screws (×8 metal frame.

) and remove the DT-Board

4. Disconnect the coupler (DT07).

5. Remove the screws (×2

6. Remove the DT-Board metal cover and 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.

6.9. Remove the H-Board

TH-50PX60U

6.11. Remove the D-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.

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

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

3. Disconnect the flexible cables (D3, D31, D32, D33 and D34).

4. Remove the screws (×4

) and remove the D-Board.

6.10. Remove the HC-Board

1. Disconnect the couple (HC06).

2. Disconnect the flexible cable (HC15).

3. Remove the screws (×2

) and remove the HC-Board.

6.12. Remove the SU-Board

1. Remove the screws (×3 ).

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.

TH-50PX60U

6.13. Remove the SD-Board

6.15. Remove the SS2-Board

1. Remove the screws (×3 ).

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.

1. Disconnect the coupler (SS23) and disconnect the flexible cable (SS55).

2. Remove the screws (×2

) and remove the SS2-Board.

6.16. Remove the SS3-Board

1. Disconnect the coupler (SS22) and disconnect the flexible cable (SS56).

2. Remove the screws (×2

) and remove the SS3-Board.

6.14. Remove the SC-Board

1. Unlock the cable clampers to free the cable.

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

3. Remove the screws (×9

) and remove the SC-Board.

6.17. Remove the SS-Board

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6.19. Remove the C2-Board

1. Remove the SS2-Board and SS3-Board. (See section 6.15. and 6.16)

2. Disconnect the couplers (SS11, SS12, SS33, SS43 and SS44).

3. Disconnect the flexible cables (SS51, SS52, SS53 and SS54).

4. Remove the screws (×7

) and remove the SS-Board.

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

2. Disconnect the flexible cables (CA4, CA5, CA6 and CA7).

3. Disconnect the flexible cables (C20, C21 and C22).

4. Remove the screws (×5

) and remove the C2-Board.

6.20. Remove the C3-Board

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

2. Disconnect the flexible cables (CA8, CA9, CA10 and

CA11).

3. Disconnect the flexible cables (C31 and C32).

4. Disconnect the coupler (C33).

5. Remove the screws (×5

) and remove the C3-Board.

6.18. Remove the C1-Board

1. Remove the flexible cables holder fastening screws (×6 ).

2. Disconnect the flexible cables (CA1, CA2 and CA3).

3. Disconnect the flexible cable (C10).

4. Remove the screws (×5

) and remove the C1-Board.

TH-50PX60U

6.21. Remove the stand brackets

6.23. Remove the C5-Board

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 (×6

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

6.22. Remove the C4-Board

1. Remove the stand bracket (left). (See section 6.21.)

2. Remove the flexible cables holder fastening screws (×8

3. Disconnect the flexible cables (CB8, CB9, CB10 and CB11).

4. Disconnect the flexible cables (C41 and C42).

5. Disconnect the couplers (C43 and C44).

6. Remove the screws (×5

) and remove the C4-Board.

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

2. Disconnect the flexible cables (CB4, CB5, CB6 and CB7).

3. Disconnect the flexible cables (C50, C51 and C52).

4. Remove the screws (×5

) and remove the C5-Board.

6.24. Remove the C6-Board

1. Remove the stand bracket (right). (See section 6.21.)

2. Remove the flexible cables holder fastening screws (×6 ).

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

4. Disconnect the flexible cable (C60).

5. Remove the screws (×5

) and remove the C6-Board.

6.25. 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.

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

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6.27. Remove the speaker L, R

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

1. Remove the front bracket. (See section 6.25.)

2. Remove the screws (×3

3. Remove the screws(×3 ) from front side 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.

6.28. 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-50PX60U

6.29. Remove the K-Board

1. Unlock the cable clampers to free the cable.

2. Disconnect the couplers (G1 and S1). (See section 6.25. and 6.28.)

3. Remove the screws (×2

) and remove the K-Board.

6.30. 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

6.31. 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, C2, C3, C4, C5 and the C6-Board, connect

the flexible cables (×22) from the Plasma panel to the C1, C2, C3, C4, C5 and the C6-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.

3. For leaving the plasma panel from the front frame, pull the bottom of the front frame forward, lift, and remove.

7 Location of Lead Wiring

7.1. Lead of Wiring (1)

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7.2. Lead of Wiring (2)

7.3. Lead of Wiring (3)

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7.4. Lead of Wiring (4)

7.5. Lead of Wiring (5)

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7.6. Lead of Wiring (6)

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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

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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

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.

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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

8.4. No Picture

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8.5. Local screen failure

Plasma display may have local area failure on the screen. Fig-1 is the possible defect P.C.B. for each local area.

Fig-1

TH-50PX60U

9 Serviceman Mode

9.1. How to enter into Serviceman Mode

While pressing [VOLUME ( - )] button of the main unit, press [RECALL] button of the remote control three times within 3 seconds.

9.1.1. Key command

“1” button...Main items Selection in forward direction “2” button...Main items Selection in reverse direction “3” button...Sub items Selection in forward direction “4” button...Sub items Selection in reverse direction “VOL” button...Value of sub items change in forward direction ( + ), in reverse direction ( - )

9.1.2. Cancellation

Switch off the power with the [POWER] button on the main unit or the [POWER] button on the remote control.

9.2. Contents of adjustment mode

· Value is shown as a hexadecimal number.

· Preset value differs depending on models.

· After entering the adjustment mode, take note of the value in each item before starting adjustment.

Main item Sub item Sample Data Remark

PCT-ADJ CONT GAIN 200

COLOR 38 TINT 05 BRIGHT 7FB RFAGC1 74 AGCADJ1 FIX RFAGC2 74 AGCADJ2 FIX

WB-ADJ R CUT 80

G CUT 80 B CUT 80 R DRV EC G DRV FC B DRV DB ALL CUT 80 ALL DRV FC WB BRG 804

OPTION SD BOOT ROM

OPT00 01 ANT-POW OFF POF-SET NORMAL STB-SEC SEC EMGCY OFF EEP COPY ALL CLK MODE 00 CLOCK 80

CEC-CHK OFF RM-SET CODE A STB-CAS - -

TH-50PX60U

9.3. Memory edit mode

9.3.1. How to access

1. Select “OPTION” in Service man Mode.

2. Press [MUTE] button on the remote control for more than 3 seconds.

9.3.2. Exit

1. Press [1] button on the remote control.

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