Panasonic TH-50PZ77U-GP10DHU Schematic

High Definition Plasma Television

GP10DHU Chassis

Specifications

PowerSource

PowerConsumption

Maximum 693 W

Standby condition 0.2 W

Plasma Displaypanel

Drive method

Aspect Ratio 16 : 9

isible screen size (W × H × Diagonal) (No. of pixels)

Sound

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 ohm)

COMPONENTVIDEO INPUT 1-2

HDMI 1-2 AUDIO IN TYPE A Connector×2

Card slot SD CARD slot × 1

AVPROG. OUT VIDEO: RCA PIN Type × 1 1.0 V [p-p] (75 ohm)

DIGITAL AUDIO OUT PCM/DolbyDigital, FiberOptic

C 120 V, 60 Hz

C type

50” (Diagonal)

43.5 ” × 24.4 ” × 49.9 ” (1,106 mm × 622 mm × 1,269 mm)

2,073,600 (1,920 (W) × 1,080 (H)) [5,760 × 1,080 dots]

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

S-VIDEO: Mini DIN 4-pin Y: 1.0 V [p-p] (75 ohm) C: 0.286 V [p-p] (75 ohm)

UDIO 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]

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

lThis TV supports “HDAVI Control 2” function.

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

ORDER NO.MTNC070829CE

B34 Canada: B07

TH-50PZ77U

FEATURES 3D Y/C FILTER

CLOSED CAPTION V-Chip

Photo Viewer HDAVI Control 2

Dimensions (W × H × D)

Including pedestal 52.1 ” × 31.6 ” × 14.6 ” (1,323 mm × 802 mm × 369 mm)

TV Set only 52.1 ” × 29.7 ” × 3.92 ” (1,323 mm × 754 mm × 99.5 mm)

Mass

Including pedestal 111.3 lb. (50.5 kg)

TV Set only 94.8 lb. (43 kg)

Note:

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

CONTENTS

Page Page

1 Applicable signals 4

2 Safety Precautions

2.1. General Guidelines

3 Prevention of Electrostatic 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 A/B/C

6.3. Remove the rear terminal cover

6.4. Remove the tuner unit

6.5. Remove the DG-Board

6.6. Remove the H-Board

6.7. Remove the P-Board

6.8. Remove the side AV unit and the side AV bracket.

6.9. Remove the G-Board and GS-Board

6.10. Remove the PB-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 SS-Board

6.16. Remove the stand brackets

6.17. Remove the C1-Board

6.18. Remove the C2-Board

6.19. Remove the C3-Board

6.20. Remove the C4-Board

6.21. Remove the C5-Board

6.22. Remove the C6-Board

6.23. Remove the speaker L, R

6.24. Remove the Plasma panel section from the Cabinet assy

(glass)

6.25. Remove the K-Board and the S-Board

6.26. Replace the plasma panel (finished)

7 Caution statement

7.1. Caution statement.

8 Location of Lead Wiring

8.1. Lead of Wiring (1)

8.2. Lead of Wiring (2)

8.3. Lead of Wiring (3)

8.4. Lead of Wiring (4)

8.5. Lead of Wiring (5)

8.6. Lead of Wiring (6)

8.7. Lead of Wiring (7)

9 Self-check Function

9.1. Check of the IIC bus lines

9.2. Power LED Blinking timing chart

9.3. No Power

9.4. No Picture

9.5. Local screen failure

10 Service Mode

10.1. How to enter into Service Mode

10.2. Service tool mode

11 Adjustment Procedure

11.1. Driver Set-up

11.2. Initialization Pulse Adjust

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

11.4. Adjustment Volume Location

11.5. Test Point Location

12 White Balance Adjustment

12.1. White balance adjustment

13 Hotel mode

14 Conductor Views

14.1. P(1)-Board

14.2. P(2)-Board

14.3. G,GS,K and S-Board

14.4. PB-Board

14.5. H-Board 46

14.6. DG-Board

14.7. D-Board

14.8. C1-Board

14.9. C2-Board

14.10. C3-Bo ard

14.11. C4-Bo ard

14.12. C5-Bo ard

14.13. C6-Bo ard

14.14. SC-Bo ard

14.15. SU-Bo ard

14.16. SD-Bo ard

14.17. SS-Bo ard

15 Schematic and Block Diagram

15.1. Schematic Diagram Note

15.2. Main Block Diagram

15.3. P-Board Block Diagram

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

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

15.6. PB-Board Block and Schematic Diagram

15.7. G, GS, K and S-Board Block ans Schematic Diagram

15.8. H-Board (1 of 2) Block Diagram

15.9. H-Board (2 of 2) Block Diagram

15.10. H-Boa rd (1 of 3) Schem atic Diagram

15.11. H-Boa rd (2 of 3) Schem atic Diagram

15.12. H-Boa rd (3 of 3) Schem atic Diagram

15.13. DG-B oard (1 of 4) Block Diagram

15.14. DG-B oard (2 of 4) Block Diagram

15.15. DG-B oard (3 of 4) Block Diagram

15.16. DG-B oard (4 of 4) Block Diagram

15.17. DG-B oard (1 of 14) Schematic Diagram

15.18. DG-B oard (2 of 14) Schematic Diagram

15.19. DG-B oard (3 of 14) Schematic Diagram

15.20. DG-B oard (4 of 14) Schematic Diagram

15.21. DG-B oard (5 of 14) Schematic Diagram

15.22. DG-B oard (6 of 14) Schematic Diagram

15.23. DG-B oard (7 of 14) Schematic Diagram

15.24. DG-B oard (8 of 14) Schematic Diagram

15.25. DG-B oard (9 of 14) Schematic Diagram

15.26. DG-B oard (10 of 14) Schematic Diagram

15.27. DG-B oard (11 of 14) Schematic Diagram

15.28. DG-B oard (12 of 14) Schematic Diagram

15.29. DG-B oard (13 of 14) Schematic Diagram

15.30. DG-B oard (14 of 14) Schematic Diagram

15.31. D-Boa rd (1 of 2) Block Diagram

15.32. D-Boa rd (2 of 2) Block Diagram

15.33. D-Boa rd (1 of 8) Schem atic Diagram

15.34. D-Boa rd (2 of 8) Schem atic Diagram

15.35. D-Boa rd (3 of 8) Schem atic Diagram

15.36. D-Boa rd (4 of 8) Schem atic Diagram

15.37. D-Boa rd (5 of 8) Schem atic Diagram

15.38. D-Boa rd (6 of 8) Schem atic Diagram

15.39. D-Boa rd (7 of 8) Schem atic Diagram

15.40. D-Boa rd (8 of 8) Schem atic Diagram

15.41. C1,C2 ,C5 and C6-Bo ard Block Diagram

15.42. C2,C3 ,C4 and C5-Bo ard Block Diagram

15.43. C1-Bo ard (1 of 2) Schematic Diagram

15.44. C1-Bo ard (2 of 2) Schematic Diagram

15.45. C2-Bo ard (1 of 2) Schematic Diagram

15.46. C2-Bo ard (2 of 2) Schematic Diagram

15.47. C3-Bo ard (1 of 2) Schematic Diagram

15.48. C3-Bo ard (2 of 2) Schematic Diagram

15.49. C4-Bo ard (1 of 2) Schematic Diagram

15.50. C4-Bo ard (2 of 2) Schematic Diagram

15.51. C5-Bo ard (1 of 2) Schematic Diagram

15.52. C5-Bo ard (2 of 2) Schematic Diagram

15.53. C6-Bo ard (1 of 2) Schematic Diagram

15.54. C6-Bo ard (2 of 2) Schematic Diagram

15.55. SC-Bo ard Block Diagra m

15.56. SC-Bo ard (1 of 2) Schematic Diagram

15.57. SC-Bo ard (2 of 2) Schematic Diagram

15.58. SU and SD-Board Block Diagram

15.59. SU-Bo ard (1 of 3) Schematic Diagram

15.60. SU-Bo ard (2 of 3) Schematic Diagram

15.61. SU-Bo ard (3 of 3) Schematic Diagram

15.62. SD-Bo ard (1 of 3) Schematic Diagram

15.63. SD-Bo ard (2 of 3) Schematic Diagram

15.64. SD-Bo ard (3 of 3) Schematic Diagram

15.65. SS-Bo ard Block Diagra m

15.66. SS-Bo ard Schematic Diagram

16 Exploded Views & Replacement Parts List

16.1. Exploded Views

16.2. Packing Exploded Views (Accessories)

16.3. Packing Explode Views (Stand)

16.4. Replacement Parts List Notes

16.5. Mechanical Replacement Parts List (PDP TV)

16.6. Mechanical Replacement Parts List (Stand)

16.7. Electrical Replacement Parts List

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1 Applicable signals

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2 Safety Precautions

2.1. General Guidelines

1. When conducting repairs and servicing, do not attempt to modify the equipment, its parts or its materials.

2. When wiring units (with cables, flexible cables or lead wires) are supplied as repair parts and only one wire or some of the wires have been broken or disconnected, do not attempt to repair or re-wire the units. Replace the entire wiring unit instead.

3. When conducting repairs and servicing, do not twist the Faston connectors but plug them straight in or unplug them straight out.

4. 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.

5. After servicing, see to it that all the protective devices such as insulation barriers, insulation papers shields are properly installed.

6. 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 1Mohm and 5.2Mohm.

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 1.5kohm, 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 AC plug in the AC outlet and repeat each 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.

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3 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. The following techniques should be used to help reduce the incidence of component damage caused by electrostatic 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 aluminum 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, aluminum 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 ham less 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).

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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 PbF stamped on the back of PCB.

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.

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5 Service Hint

Remove the Rear Cover

Board Name Function Board Name Function

P Power Supply D Format Converter, Plasma AI, Sub-Field Processor

PB Fan control C1 Data Driver (Upper Right)

H Speaker out, Sound Processor

AV Terminal, AV Switch

DG DC-DC Converter

Digital Signal Processor, Microcomputer HDMI Interface, Peaks Lite 2, Full HD

G Front terminal, Key Switch SC Scan Drive K Remote receiver, Power LED SU Scan out (Upper) S Power Switch SD Scan out (Lower)

GS SD Card Slot SS Sustain Drive

C2 Data Driver (Upper Center) C3 Data Driver (Upper Left) C4 Data Driver (Lower Left) C5 Data Driver (Lower Center) C6 Data Driver (Lower Right)

6 Plasma panel replacement method

6.1. Remove the Back cover

1. See Service Hint. (Section 5)

6.2. Remove the fan A/B/C

1. Unlock the cable clampers to free the cable.

2. Disconnect the relay connectors.

3. Remove the screws (×3

each) and remove the fan A.

6.4. Remove the tuner unit

1. Remove the screws (×3 ).

2. Remove the tuner unit mounting metal.

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4. Disconnect the relay connectors.

5. Remove the screws (×3

each) and remove the fan B/C.

6.3. Remove the rear terminal cover

1. Remove the screws (×7 ,×6 ,×1 ,×2 ).

2. Remove the rear terminal cover.

3. Unlock the cable clampers to free the cable.

4. Disconnect the connectors (DG1, DG5, DG35, DG52, H5, H10, H11, H12, H30 and H51).

5. Remove the screws (×4

) and remove the tuner unit.

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6.5. Remove the DG-Board

1. Remove the tuner unit. (See section 6.4.)

2. Disconnect the flexible cable (DG3).

3. Disconnect the connector (DG2).

4. Remove the screws (×6

5. Remove the screw (×1 ) and remove the tuner mounting metal.

) and remove the DG-Board.

6.7. 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 connectors (P2, P5, P9, P10, P11, P12, P23 and P25).

3. Remove the screws (×7

) and remove the P-Board unit.

6.6. Remove the H-Board

1. Remove the tuner unit. (See section 6.4.)

2. Disconnect the flexible cable (H3).

3. Disconnect the connector (DG2).

4. Remove the screws (×7

) and remove the H-Board.

4. Remove the screws (×21 ) on the back side.

5. Disconnect the connectors (CN501-CN502, CN503-CN504 and CN601-CN602).

6. Remove the screws (×12

Note:

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

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marks

7. Remove the molding props (×1 ).

8. Remove the P(Multi)-Board.

9. Remove the molding props (×9

10. Remove the P(Sus)-Board.

6.8. Remove the side AV unit and the side AV bracket.

1. Unlock the cable clampers to free the cable.

2. Disconnect the connectors (G51 and GS52) and relay

connector.

3. Remove the screws (×4

4. Remove the side AV unit.

5. Remove the screw (×1 ).

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6. Remove the tabs (×4 ) and Remove the side AV bracket.

4. Remove the screws (×4 ) and remove the G-Board and GS-Board.

6.9. Remove the G-Board and GSBoard

1. Remove the side AV unit and the side AV bracket. (See

section 6.8.)

2. Remove the screws (×2

6.10. Remove the PB-Board

1. Unlock the cable clampers to free the cable.

2. Disconnect the connectors (PB30, PB31, PB32, PB34 and PB37).

3. Remove the screw (×2

) and remove the PB-Board.

3. Remove the screws (×6 ) and remove the side AV unit shield cover and the control button.

6.11. Remove the D-Board

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6.13. Remove the SD-Board

1. Remove the tuner unit. (See section 6.4.)

2. Disconnect the connectors (D3, D5, D20 and D25).

3. Disconnect the flexible cables (D31, D32, D33, D34, D35 and D36).

4. Remove the screws (×4 ) and remove the D-Board.

1. Remove the screws (×2 ).

2. Remove the flexible cables (SD1, SD2, SD3, SD4 and SD5) connected to the SD-Board and remove the connector (SC46-SD46).

3. Slide the SD-Board to the left to disconnect from connectors (SC43-SD43 and SC44-SD44) on the SC-Board and remove the SD-Board.

6.12. Remove the SU-Board

1. Remove the screws (×2 ).

2. Remove the flexible cables (SU1, SU2, SU3, SU4 and SU5) connected to the SU-Board and remove the connectors (SC45-SU45).

3. Slide the SU-Board to the left to disconnect from connectors (SC41-SU41 and SC42-SU42) on the SC-Board and remove the SU-Board.

6.14. Remove the SC-Board

1. Unlock the cable clampers to free the cable.

2. Remove the SU-Board and SD-Board. (See section 6.12. and 6.13.)

3. Unlock the cable clampers to free the cable.

4. Disconnect the connectors (SC2, SC20 and SC23).

5. Remove the screws (×9

) and remove the SC-Board.

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6.15. Remove the SS-Board

1. Disconnect the connectors (SS11, SS12, SS35, SS42 and SS44).

2. Disconnect the flexible cables (SS51, SS52, SS53, SS54, SS55 and SS56).

3. Remove the screws (×7

) and remove the SS-Board.

6.17. Remove the C1-Board

1. Remove the fan A. (See section 6.2.)

2. Remove the flexible cables holder fastening screws (×10 ).

3. Disconnect the flexible cables (CA1, CA2, CA3, CA4, and

CA5).

4. Disconnect the flexible cables (C10 and C11).

5. Remove the screws (×5 ) and remove the C1-Board.

6.18. Remove the C2-Board

6.16. Remove the stand brackets

1. Remove the plasma panel section from the servicing stand and lay on a flat 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).

1. Remove the fan B. (See section 6.2.)

2. Remove the flexible cables holder fastening screws (×10 ).

3. Disconnect the flexible cables (CA6, CA7, CA8, CA9 and

CA10).

4. Disconnect the flexible cables (C21, C22, C24 and C25).

5. Remove the screws (×5 ) and remove the C2-Board.

6.19. Remove the C3-Board

1. Remove the fan C. (See section 6.2.)

2. Remove the flexible cables holder fastening screws (×10 ).

3. Disconnect the flexible cables (CA11, CA12, CA13, CA14

and CA15).

4. Disconnect the flexible cable (C31).

5. Disconnect the connector (C35).

6. Remove the screws (×5

) and remove the C3-Board.

6.20. Remove the C4-Board

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6.22. Remove the C6-Board

1. Remove the stand bracket right. (See section 6.16.)

2. Remove the flexible cables holder fastening screws (×10 ).

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

CB5).

4. Disconnect the flexible cables (C60 and C61).

5. Remove the screws (×5 ) and remove the C6-Board.

1. Remove the stand bracket left. (See section 6.16.)

2. Remove the flexible cables holder fastening screws (×10 ).

3. Disconnect the flexible cables (CB11, CB12, CB13, CB14

and CB15).

4. Disconnect the flexible cable (C41).

5. Disconnect the connectors (C42 and C44).

6. Remove the screws (×5

) and remove the C4-Board.

6.21. Remove the C5-Board

1. Remove the tuner unit. (See section 6.4.)

2. Remove the flexible cables holder fastening screws (×10 ).

3. Disconnect the flexible cables (CB6, CB7, CB8, CB9 and

CB10).

4. Disconnect the flexible cables (C51, C52, C54 and C55).

5. Remove the screws (×5

) and remove the C5-Board.

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6.23. Remove the speaker L, R

1. Disconnect the relay connector .

2. Remove the screws (×4 holder.

3. Remove the speaker L, R.

each) and remove the speaker

6.25. Remove the K-Board and the S-Board

6.24. Remove the Plasma panel section from the Cabinet assy (glass)

1. Remove the stand brackets (left, right) fastening screw (×1

each).

2. Remove the cabinet assy and the plasma panel fastening

screws (×13

1. Remove the cabinet assy. (See section 6.24.)

2. Remove the screws (×13 bottom.

3. Unlock the cable clampers to free the cable.

4. Remove the screws (×2 metal.

) and remove the glass holder

) and remove the front P.C.B.

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

5. Remove the screws (×2 ).

6. Disconnect the connector (S1) and Remove the S-Board.

7. Remove the screws (×2 ).

8. Disconnect the connectors (K1) and remove the K-Board.

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6.26. 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-Board and the C6-Board,

connect the flexible cables (×30) from the Plasma panel to the C1, C2, C3,C4,C5-Board and the C6-Board, and fit the flexible cable holders.

3. Attach the Hooks (left, right) and fit the Reinforcement

Angles (L, R) and the Connection Plate (A, B, C, D) to the new plasma panel.

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

5. Attach the cabinet assy and each P.C.Board and so on, to

the new plasma panel.

* When fitting the cabinet assy, be careful not to allow any debris, dust or handling residue to remain between the front glass and plasma panel.

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7 Caution statement

7.1. Caution statement.

Caution:

Please confirm that all flexible cables are assembled correctly.

Also make sure that they are locked in the connectors.

Verify by giving the flexible cables a very slight pull.

8 Location of Lead Wiring

8.1. Lead of Wiring (1)

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8.2. Lead of Wiring (2)

8.3. Lead of Wiring (3)

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8.4. Lead of Wiring (4)

8.5. Lead of Wiring (5)

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8.6. Lead of Wiring (6)

8.7. Lead of Wiring (7)

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9 Self-check Function

Use the self-check function to test the unit.

1. Checking the IIC bus lines

2. Power LED Blinking timing

9.1. Check of the IIC bus lines

9.1.1. 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.

Self-check indication and forced to factory shipment setting:

Produce TV reception screen, and while pressing [VOLUME ( - )] button on the main unit, press [MENU] button on the remote control for more than 3 seconds.

9.1.2. Exit

Disconnect the AC cord from wall outlet.

9.1.3. Screen display

9.1.4. Check Point

Confirm the following parts if NG was displayed.

9.2. 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 blinks of the Power LED on the front panel of the unit.

TH-50PZ77U

9.3. 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 9.2.)

9.4. No Picture

TH-50PZ77U

9.5. 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

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