Panasonic GPH7D2, TH-50PHD7BK, TH-50PHD7BS, TH-50PHD7UY Service Manual

SORDER NO. ITD0410044C0

D10 Ca nada: B07

High Definition Plasma Display

TH-50PHW7BX TH-50PHW7EX TH-50PHD7EK TH-50PHD7ES TH-50PHD7BK TH-50PHD7BS TH-50PHD7UY

Specifications

Power Source: AC120V 50/60Hz (UY version)

AC220-240V 50/60Hz (Except UY version model)

Power Consumption: 480 W (UY version)

435 W (Except UY) Save off 0.8 W, Save on 0.5 W (stand-b

condition) (UY version) Save off 1.0 W, Save on 0.7 W (stand-by

condition) (Except UY version model)

0.1 W (Power off condition) (UY version model)

0.3 W (Power off condition) (Except UY version model)

Plasma Displaypanel: Drive method AC type

16:9 aspect ratio

Contrast Ratio 3000:1 Screen size: 1,106 mm (W) × 622 mm (H)

1,269 mm (diagonal) No. of pixels 1,049,088 (1,366 (W) × 768 (H)) [4,098 × 768 dots]

Operating condition: Temperature 32 °F - 104 °F (0 °C - 40 °C) Humidit

20 % - 80 %

GPH7D2 Chassis

Applicable signals

Colour System NTSC, PAL, PAL60, SECAM, Modified NTSC Scanningformat 525 (480)/60i 60p, 625 (575)/50i 50p,

750 (720) / 60p 24p 25p 30p 24sF ... SMPTE274M, 1250 (1080) / 50i

PC signals XGA displa

VGA, SVGA, XGA, SXGA, UXGA ... (compressed) Horizontal scanning frequency 15 - 110 kHz Vertical scanning frequency 48 - 120 Hz

Connection terminals: AV (UY version)

Video in/out 1.0 Vp-p (75-ohm) S-VIDEO IN

(MINI DIN 4PIN) AUDIO IN

(RCA PIN JACK × 2)

COMPONENT/RGB (UY version)

Y/G 1.0 Vp-p/composite (75-ohm)

B 0.7 Vp-p (75-ohm)

R 0.7 Vp-p (75-ohm)

HD 1.0 - 5.0 Vp-p (high impedance) VD 1.0 - 5.0 Vp-p (high impedance)

Y: 1 Vp-p (75-ohm), C: 0.286 Vp-p (75-ohm)

0.5 Vrms (high impedance)

0.7 Vp-p/non-composite (75-ohm)

50p, 1125 (1080) / 60i 50i

TH-50PHW7BX / TH-50PHW7EX / TH-50PHD7EK / TH-50PHD7ES / TH-50PHD7BK / TH-50PHD7BS / TH-50PHD7UY

AUDIO IN (RCA PIN JACK×2)

(HIGH-DENSITY D-SUB15PIN)

AUDIO IN (M3 JACK) 0.5Vrms (high impedance)

0.5 Vrms (high impedance)

R,G,B/0.7 Vp-p (75-ohm)

HD, VD/1.0 - 5.0 Vp-p (high impedance)

SERIAL

EXTERNAL CONTROL TERMINAL (D-SUB9PIN)

SPEAKERS (External speakers) (6WWWW)

Dimensions (W×H×D): 1,210 mm × 724 mm 95 mm Weight (Mass) approx. 42.5 kgnet (main unit only)

RS-232C COMPATIBLE

16W [8W+8W] (10% THD)

approx. 47.1 kg net (with speakers)

CONTENTS

Page Page

1 Applicable signals 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 PCB Structure sheet of GPH7D2 chassis 6 Service Hint 7 Location of Lead Wiring 8 P.C.Board and Plasma panel replacement

8.1. Removal of the back cover

8.2. Removal of the Slot block

8.3. Removal of the J-Board

8.4. Removal of the HX-Board

8.5. Removal of the P-Board

8.6. Removal of the Z-Board

8.7. Removal of the D-Board

8.8. Removal of the PF-Board

8.9. Removal of the H3-Board

8.10. Removal of the SU-Board

8.11. Removal of the SD-Board

8.12. Removal of the SC-Board

8.13. Removal of the SS-Board

8.14. Removal of the SS2-Board

8.15. Removal of the SS3-Board

8.16. Removal of the fan

8.17. Removal of the C1-Board

8.18. Removal of the C2-Board

8.19. Removal of the C3-Board

8.20. Removal of stand brackets

8.21. Removal of the C4-Board

8.22. Removal of the C5-Board

8.23. Removal of the C6-Board

8.24. Removal of the Front frame (glass)

8.25. Replacement of the plasma panel

9 Adjustment Procedure

9.1. Driver Set-up

4 5

6 7 8

9 10 11

11 11 11 11 11 12 12 12 13 13 13 13 14 14 14 14 15 15 15 15 15 16 16 16 16

9.2. Initialization Pulse Adjust

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

9.4. Adjustment Volume Location

9.5. Test Point Location

10 Servi ce mode

10.1. CAT (computer Aided Test) mode

10.2. IIC mode structure (following items value is sample data.)

11 Alignment

11.1. PC/RGB panel white balance

11.2. HD/ 525i /525p /625i /625p panel white balance

12 Trouble shooting guide

12.1. Self Check

12.2. No Power

12.3. No Picture

12.4. Local screen failure

13 Option Setting

13.1. How to access and setting

13.2. Contents of Open Menu

14 Circuit Board Layout

14.1. PF-Board

14.2. P-Board

14.3. HA-Board

14.4. HB-Board

14.5. HX-Board

14.6. J-Board

14.7. D-Board

14.8. C1-Board

14.9. C2-Board

14.10. C3-Board

14.11. C4-Board

14.12. C5-Board

14.13. C6-Board

14.14. SC-Board

14.15. SU-Board

14.16. SD-Board

14.17. SS-Board

18 19 19 19

23 26

28 28 30 30

31 32

33 34 37 38 39 40 42 44 45 46 47 48 49 50 53 54 55

TH-50PHW7BX / TH-50PHW7EX / TH-50PHD7EK / TH-50PHD7ES / TH-50PHD7BK / TH-50PHD7BS / TH-50PHD7UY

14.18. Z-Board 57

14.19. H3, S1 and V1-Board

15 Sche matic Diagr ams

15.1. Schematic Diagram Notes

15.2. Main Block Diagram

15.3. PF and P-Board Block Diagram

15.4. PF-Board Schematic Diagram

15.5. P-Board (1 of 6) Schematic Diagram

15.6. P-Board (2 of 6) Schematic Diagram

15.7. P-Board (3 of 6) Schematic Diagram

15.8. P-Board (4 of 6) Schematic Diagram

15.9. P-Board (5 of 6) Schematic Diagram

15.10. P-Board (6 of 6) Schematic Diagram

15.11. HA-Board Block Diagram and Schematic Diagram

15.12. HB-Board Block Diagram

15.13. HB-Board (1 of 2) Schematic Diagram

15.14. HB-Board (2 of 2) Schematic Diagram

15.15. HX-Board Block Diagram and Schematic Diagram

15.16. J-Board Block Diagram

15.17. J-Board (1 of 4) Schematic Diagram

15.18. J-Board (2 of 4) Schematic Diagram

15.19. J-Board (3 of 4) Schematic Diagram

15.20. J-Board (4 of 4) Schematic Diagram

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

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

15.23. D-Board (1 of 12) Schematic Diagram

15.24. D-Board (2 of 12) Schematic Diagram

15.25. D-Board (3 of 12) Schematic Diagram

15.26. D-Board (4 of 12) Schematic Diagram

15.27. D-Board (5 of 12) Schematic Diagram

15.28. D-Board (6 of 12) Schematic Diagram

15.29. D-Board (7 of 12) Schematic Diagram

15.30. D-Board (8 of 12) Schematic Diagram

15.31. D-Board (9 of 12) Schematic Diagram

15.32. D-Board (10 of 12) Schematic Diagram

15.33. D-Board (11 of 12) Schematic Diagram

15.34. D-Board (12 of 12) Schematic Diagram

15.35. C1, C2, C5 and C6-Board Block Diagram

15.36. C3 and C4-Board Block Diagram

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

59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93

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

15.39. C2-Board (1 of 2) Schematic Diagram

15.40. C2-Board (2 of 2) Schematic Diagram

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

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

15.43. C4-Board (1 of 2) and V1-Board Schematic Diagram

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

15.45. C5-Board (1 of 2) Schematic Diagram

15.46. C5-Board (2 of 2) Schematic Diagram

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

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

15.49. SC-Board Block Diagram

15.50. SC-Board (1 of 3) Schematic Diagram

15.51. SC-Board (2 of 3) Schematic Diagram

15.52. SC-Board (3 of 3) Schematic Diagram

15.53. SU-Board Block Diagram

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

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

15.56. SD-Board Block Diagram

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

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

15.59. SS, SS2, SS3 and S1-Board Block Diagram

15.60. SS-Board (1 of 2) and S1-Board Schematic Diagram

15.61. SS-Board (2 of 2), SS2 and SS3-Board Schematic Diagram

15.62. Z-Board and H3-Board Block Diagram

15.63. Z-Board (1 of 2) and H3-Board Schematic Diagram

15.64. Z-Board (2 of 2) Schematic Diagram

16 Parts Locat ion 17 Packing Exploded Views

17.1. Packing Exploded Views (1)

17.2. Packing Exploded Views (2)

17.3. Packing Exploded Views (3)

18 Mech ani ca l Replacement Parts List 19 Repl acement Parts List

19.1. Replacement Parts List Notes

19.2. Electrical Replacement List

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

124 125 126

127 129

129 130

TH-50PHW7BX / TH-50PHW7EX / TH-50PHD7EK / TH-50PHD7ES / TH-50PHD7BK / TH-50PHD7BS / TH-50PHD7UY

1 Applicable signals

TH-50PHW7BX / TH-50PHW7EX / TH-50PHD7EK / TH-50PHD7ES / TH-50PHD7BK / TH-50PHD7BS / TH-50PHD7UY

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 ACplug in theAC 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.

TH-50PHW7BX / TH-50PHW7EX / TH-50PHD7EK / TH-50PHD7ES / TH-50PHD7BK / TH-50PHD7BS / TH-50PHD7UY

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 r educe 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-50PHW7BX / TH-50PHW7EX / TH-50PHD7EK / TH-50PHD7ES / TH-50PHD7BK / TH-50PHD7BS / TH-50PHD7UY

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 s older 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-50PHW7BX / TH-50PHW7EX / TH-50PHD7EK / TH-50PHD7ES / TH-50PHD7BK / TH-50PHD7BS / TH-50PHD7UY

5 PCB Structure sheet of GPH7D2 chassis

Board Name Function Remarks

D Digital Signal Processor 1

J Slot Interface & SYNC processor 1

Z Audio out, DC-DC converter SS Sustain Out 1 SC Scan out 1 SU Sustain connection (Upper) 1 SD Sustain connection (Lower) 1 C1 Data Drive (Upper Right) C2 Data Drive (Upper Center) C3 Data Drive (Lower Left) C4 Data Drive (Lower Left) C5 Data Drive (Lower Center) C6 Data Drive (Lower Right) H3 Speaker terminal S1 Power switch

SS2 Sustain connection (Upper) SS3 Sustain connection (Lower)

V1 Front SW. & Remote receiver PF Line filter

P Power supply 1 HX PC_type_Input terminal HB BNC Composite Video 2, 3 HA BNC Component Video 2, 3

Remarks

1. Recommend PCB´s for initial s ervice for GPH7D2 chassis.

2. For System model except BX, EX version

3. For Consumer model except BX, EX version

6 Service Hint

TH-50PHW7BX / TH-50PHW7EX / TH-50PHD7EK / TH-50PHD7ES / TH-50PHD7BK / TH-50PHD7BS / TH-50PHD7UY

Service position for HB-Board, HA-Board and TY-42TM6

Note:

Extension cable kit for Slot Board is supplied a s service fixtures and tools. (Part No. TZSC07040)

TH-50PHW7BX / TH-50PHW7EX / TH-50PHD7EK / TH-50PHD7ES / TH-50PHD7BK / TH-50PHD7BS / TH-50PHD7UY

7 Location of Lead Wiring

TH-50PHW7BX / TH-50PHW7EX / TH-50PHD7EK / TH-50PHD7ES / TH-50PHD7BK / TH-50PHD7BS / TH-50PHD7UY

8 P.C.Board and Plasma panel replacement

Prior to the replacement, place the unit on the pedestal stand remove the front frame.

8.1. Removal of the back cover

a. Unscrew the screws (×19 , ×6 , ×4 ) and remove the back cover.

8.2. Removal of the Slot block

a. Disconnect the couplers (J1, J3, J5, J6, J8, J10). b. Unscrew the screws (×4) and remove the slot block.

8.4. Removal of the HX-Board

a. Unscrew the screws (×6) and remove the slot case.

b. Unscrew the screws (×4).

c. Unscrew the screws (×2) and remove the HX-Board.

8.3. Removal of the J-Board

a. Unscrew the screws (×7) and remote the J-Board.

8.5. Removal of the P-Board

a. Disconnect the couplers (P2, P5, P9, P10, P11, P12, P23, P25, P27).

b. Unscrew the screws (×8) and remove the P-Board.

TH-50PHW7BX / TH-50PHW7EX / TH-50PHD7EK / TH-50PHD7ES / TH-50PHD7BK / TH-50PHD7BS / TH-50PHD7UY

8.6. Removal of the Z-Board

a. Disconnect the couplers (Z5, Z6, Z7, Z8, Z30, Z31). b. Unscrew the screws (×4

theZ-BoardBracket. c. Unscrew the screws (×4

) and remove the Z-Board with

) and remove the Z-Board.

8.8. Removal of the PF-Board

a. Remove the PF shield case cover and disconnect the coupler (PF1).

b. Unscrew the screws (×2) and remove the AC inlet.

8.7. Removal of the D-Board

a. Disconnect the couplers (D1, D3, D5, D10, D25, D27) and the flexible cables (D31, D32, D33, D34).

b. Unscrew the screws (×6) and remove the D-Board.

c. Disconnect the couplers (PF9, PF10). d. Unscrew the screws (×4), and remove the PF-Board.

TH-50PHW7BX / TH-50PHW7EX / TH-50PHD7EK / TH-50PHD7ES / TH-50PHD7BK / TH-50PHD7BS / TH-50PHD7UY

8.9. Removal of the H3-Board

a. Unscrew the screws (×2 ), and remove the H3-Board with the Bracket.

b. Unscrew the screws (×4

), and remove the H3-Board.

8.10. Removal of the SU-Board

a. Unscrew the screws (×3). b. Slide the SU-Board to the left and disconnect from the

couplers (SC41) on the SC-Board. c. Disconnect the coupler (SU45). d. Disconnect the flexible cables (SU1, SU2, SU3, SU4)

connected to the SU-Board, and remove the SU-Board.

8.11. Removal of the SD-Board

a. Unscrew the screws (×3). b. Slide the SD-Board to the left and disconnect from the

couplers (SC42) on the SC-Board. c. Disconnect the coupler (SD46). d. Disconnect the flexible cables (SD1, SD2, SD3, SD4)

connected to the SD-Board, and remove the SD-Board.

8.12. Removal of the SC-Board

a. Disconnect the couplers (SC2, SC12, SC13, SC20, SC23, SC45, SC46, SC62).

b. Unscrew the screws (×9) and remove the SC-Board.

TH-50PHW7BX / TH-50PHW7EX / TH-50PHD7EK / TH-50PHD7ES / TH-50PHD7BK / TH-50PHD7BS / TH-50PHD7UY

8.13. Removal of the SS-Board

a. Disconnect the couplers (SS11, SS12, SS32, SS34, SS35, SS42).

b. Disconnect the coupler (SS21) on SS2-Board. c. Disconnect the coupler (SS31) on SS3-Board. d. Disconnect the flexible cables (SS51, SS52, SS53, SS54,

SS55, SS56). e. Unscrew the screws (×7), and remove the SS-Board.

8.15. Removal of the SS3-Board

a. Disconnect the couplers (SS31). b. Disconnect the flexible cable (SS48). b. Unscrew the screws (×2) and remove the SS3-Board.

8.16. Removal of the fan

a. Disconnect the fan cable connector. b. Unscrew the screws (×3) and remove the fan.

8.14. Removal of the SS2-Board

a. Disconnect the couplers (SS21). b. Disconnect the flexible cable (SS41). b. Unscrew the screws (×2) and remove the SS2-Board.

TH-50PHW7BX / TH-50PHW7EX / TH-50PHD7EK / TH-50PHD7ES / TH-50PHD7BK / TH-50PHD7BS / TH-50PHD7UY

8.17. Removal of the C1-Board

a. Disconnect the flexible cables (CA1, CA2, CA3, CA4, C10, C11).

b. Disconnect the couplers (C12, C13) release the SC45-SU45 cable from the clamper on the C1-Board.

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

8.18. Removal of the C2-Board

8.20. Removal of stand brackets

a. Lay on a table (covered), with the plasma panel surface facing downward.

Spread a soft cloth for protection, to prevent panel surface from scratching.

b. Unscrew the stand bracket (left, right) fastening screws (×4 each) and remove the stand brackets (left, right).

a. Disconnect the flexible cables (CA5, CA6, CA7, C20, C21, C22, C23, C24, C25).

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

8.19. Removal of the C3-Board

a. Disconnect the flexible cables (CA8, CA9, CA10, CA11, C31, C33).

b. Disconnect the couplers (C32, C35). c. Unscrew the screws (×5) and remove the C3-Board.

8.21. Removal of the C4-Board

a. Disconnect the cables (CB8, CB9, CB10, CB11, C41, C43). b. Disconnect the couplers (C42, C44) and release the speaker

cables from the clampers (×2) on the C4-Board. c. Unscrew the screws (×5), and remove the C4-Board.

TH-50PHW7BX / TH-50PHW7EX / TH-50PHD7EK / TH-50PHD7ES / TH-50PHD7BK / TH-50PHD7BS / TH-50PHD7UY

8.22. Removal of the C5-Board

a. Disconnect the flexible cables (CB5, CB6, CB7, C50, C51, C52, C53, C54, C55).

b. Release the speaker cable from the clampers (×3) on the C5-Board.

c. Unscrew the screws (×5) and remove the C5-Board.

b. Release all cables from the clamper on the bracket of the front frame.

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

8.23. Removal of the C6-Board

a. Disconnect the flexible cables (CB1, CB2, CB3,CB4, C60,C61).

b. Disconnect the coupler (C62) and release the speaker cables from the clampers (×4) on the C1-Board.

c. Unscrew the screws (×5), and remove the C1-Board.

8.24. Removal of the Front frame (glass)

a. Remove the screws (×2) fasten on the panel and remove the front panel.

8.25. Replacement of the plasma panel

a. 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.

b. Fit the stand brackets (left, right.) fast 4 screws each on the new plasma panel.

c. Place the plasma panel section on the servicing stand. d. Attach the front frame each P.C.Board and so on, to the new

plasma panel.

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

TH-50PHW7BX / TH-50PHW7EX / TH-50PHD7EK / TH-50PHD7ES / TH-50PHD7BK / TH-50PHD7BS / TH-50PHD7UY

9 Adjustment Procedure

9.1. Driver Set-up

9.1.1. Item / Preparation

1. Input an APL 100 % white signal.

2. Set the picture controls: Picture mode: Normal White balance: Cool Aspect: 16:9

9.1.2. Adjustments

Adjust driver section voltages referring the panel data on the panel data label.

Name Test Point Voltage Volume Remarks Vsus TPVSUS 173V ± 2V R641 (P) Ve TPVE 150V ± 1V VR6070 (SS) Vda TPVDA 75V ± 1V R665 (P) Vad TPVAD -85V ± 1V VR6477 (SC) Vscn TPVSCN Vad+ 120V ± 4V --Vset TPVSET 220V ± 7V --PFC C448 (+)(-) 395V ± 0.5V R443 (P) Vdat C560 (+)(-) 77V ± 0.1V R661 (P) load

Vsus TPVsus 163V ± 1V R608 (P) load

current :

0.4A

current :

2.0A

*See the Panel label.

TH-50PHW7BX / TH-50PHW7EX / TH-50PHD7EK / TH-50PHD7ES / TH-50PHD7BK / TH-50PHD7BS / TH-50PHD7UY

9.2. Initialization Pulse Adjust

1. Input a Cross hatch signal.

2. Set the picture controls: Picture mode: Normal White balance: Cool

Adjust the indicated test point for the specified wave form.

Test point Volume Level T1 TPSC1 (SC) --- 20 ± 15µ Sec T2 TPSS1 (SS) VR6557 (SC) 155 ± 10µ Sec

TH-50PHW7BX / TH-50PHW7EX / TH-50PHD7EK / TH-50PHD7ES / TH-50PHD7BK / TH-50PHD7BS / TH-50PHD7UY

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

9.3.1. Caution

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

9.3.2. Quick adjustment after P.C.B. exchange

P.C.B. Name Test Point Voltage Volume Remarks

SS Board Vsus TPVSUS 173V ± 2V R641 (P)

Ve TPVE 150V ± 1V VR6070 (SS) Vda TPVDA 75V ± 1V R665 (P)

SC Board Vad TPVAD -85V ± 1V VR6477 (SC)

Vscn TPVSCN Vad+ 120V ± 4V --Vset TPVSET 220V ± 7V ---

D, J Board White blance, Pedestal and Sub brightness for NTSC, PAL, HD, PC and 625i signals

*See the Panel label.

9.4. Adjustment Volume Location

9.5. Test Point Location

TH-50PHW7BX / TH-50PHW7EX / TH-50PHD7EK / TH-50PHD7ES / TH-50PHD7BK / TH-50PHD7BS / TH-50PHD7UY

10 Service mode

10.1. CAT (computer Aided Test) mode

To exit the CAT mode, access the ID mode and switch off the main power.

10.1.1. IIC mode

Select the IIC mode by Up/Down button on the remote control at the front page of CAT mode then press the Action button on the remote control.

Subject and item are mentioned on page 14.

To exit the IIC mode, press the R button on the remote control.

TH-50PHW7BX / TH-50PHW7EX / TH-50PHD7EK / TH-50PHD7ES / TH-50PHD7BK / TH-50PHD7BS / TH-50PHD7UY

10.1.2. CD mode

Select the CD mode by Up/Down button on the remote control at the front page of CAT mode then press the Mute button on the remote control more than 5 sec.

Micom software version (IC9705), this version can be upgrade by

1. replace of new version IC

2. Loading the new version software from loader tool, TZSC07036. Memory data change

To exit the CD mode, press the R button on the remote control.

10.1.3. SD mode

Select the SD mode by Up/Down button on the remote control at the front page of CAT mode then press the Action button on the remote control.

To exit the SD mode, press the R button on the remote control.

TH-50PHW7BX / TH-50PHW7EX / TH-50PHD7EK / TH-50PHD7ES / TH-50PHD7BK / TH-50PHD7BS / TH-50PHD7UY

10.2. IIC mode structure (following items value is sample data.)

TH-50PHW7BX / TH-50PHW7EX / TH-50PHD7EK / TH-50PHD7ES / TH-50PHD7BK / TH-50PHD7BS / TH-50PHD7UY

11 Alignment

11.1. PC/RGB panel white balance

INPUT Alignment menu ProcedureEquipment Setting

1 PC Color Picture:

Gray Scale Analyzer Normal Pattern White balance:

Aspect:

High light 75%

Low light 15%

1) Set G cut off to " 80 ".

Cool

16:9

2)Find 75% of white area by color sensor.

PANEL W/B

G Drive 3) Set G Drive to " E8 ".

PANEL W/B

B Drive 4) Adjust B and R Drive to set color temperature

R Drive as shown Fig.-03.

PANEL W/B

R,G,B Drive 5) Increase same steps of R, G and B Drive to set R,G,B Drive largest level of 3 color drive to "FC".

PANEL W/B

R,G,B cut off

Color Temp. x y

Cool(Hi) 0.276 0.276

Normal(Mid) 0.288 0.296

Warm(Low) 0.313 0.329

Fig. -03

2 Picture: 1) Change white balance to "Normal".

Normal PANEL W/B

White balance: R,G,B cut off 2) Repeat procedure 1) to 5) of Cool mode.

Normal PANEL W/B

Aspect: R,G,B Drive

16:9

3 Picture: 1) Change white balance to "Warm".

Normal PANEL W/B

White balance: R,G,B cut off 2) Repeat procedure 1) to 5) of Cool mode.

Warm PANEL W/B

Aspect: R,G,B Drive

16:9

4 Picture: Picture Menu 1) Change color templature to "Cool".

Normal Sub Adjust

White balance: Sub Bright

Cool

Aspect:

16:9

TH-50PHW7BX / TH-50PHW7EX / TH-50PHD7EK / TH-50PHD7ES / TH-50PHD7BK / TH-50PHD7BS / TH-50PHD7UY

INPUT Alignment menu ProcedureEquipment Setting

5 Picture: 1) Write down each color temaparature of R,G,B drive and

Normal Cut off data as follows.

Aspect:

16:9

White

RGB Gray Scale Pattern

White balance:

Cool R Drive

Normal G Drive

Warm B Drive

Balance Cool Normal Warm

R Cut off G Cut off B Cut off

2) Input RGB signal.

High light 75%

Low light 15% 3) Copy PC R,G,B drive and cut off data of each white

balance mode to RGB position.

6 Picture: 1) Write down each color temaparature of R,G,B drive and

Normal Cut off data as follows.

Aspect:

16:9

White

DVI Gray Scale Pattern

White balance:

Cool R Drive

Normal G Drive

Warm B Drive

Balance Cool Normal Warm

R Cut off G Cut off B Cut off

2) Input NTSC signal.

High light 75%

Low light 15% 3) Copy PC R,G,B drive and cut off data of each white

balance mode to DVI position.

TH-50PHW7BX / TH-50PHW7EX / TH-50PHD7EK / TH-50PHD7ES / TH-50PHD7BK / TH-50PHD7BS / TH-50PHD7UY

INPUT Alignment menu ProcedureEquipment Setting

7 Picture: 1) Write down each color temaparature of R,G,B drive and

Normal Cut off data as follows.

Aspect:

16:9

White

RGB Gray Scale Pattern

White balance:

Cool R Drive

Normal G Drive

Warm B Drive

Balance Cool Normal Warm

R Cut off G Cut off B Cut off

2) Input PAL signal.

High light 75%

Low light 15% 3) Copy PC R,G,B drive and cut off data of each white

balance mode to RGB position.

8 Picture: 1) Write down each color temaparature of R,G,B drive and

Normal Cut off data as follows.

Aspect:

16:9

White

DVI Gray Scale Pattern

White balance:

Cool R Drive

Normal G Drive

Warm B Drive

Balance Cool Normal Warm

R Cut off G Cut off B Cut off

2) Input DVI signal.

High light 75%

Low light 15% 3) Copy PC R,G,B drive and cut off data of each white

balance mode to DVI position.

TH-50PHW7BX / TH-50PHW7EX / TH-50PHD7EK / TH-50PHD7ES / TH-50PHD7BK / TH-50PHD7BS / TH-50PHD7UY

11.2. HD/ 525i /525p /625i /625p panel white balance

INPUT Alignment menu ProcedureEquipment Setting

1HD(720i or 1080i) Color Picture:

Gray Scale Analyzer Normal Pattern

High light 75%

Low light 15%

White balance:

Cool

Aspect: PANEL W/B

16:9 G cut off 1) Set G cut off to " 80 ".

PANEL W/B

B cut off

R cut off

Sub Adjust

Sub Bright

2)Find 75% of white area by color sensor.

PANEL W/B

G Drive 3) Set G Drive to " E8 ".

PANEL W/B

B Drive 4) Adjust B and R Drive to set color temperature

R Drive as shown Fig.-04.

PANEL W/B

R,G,B Drive 5) Increase same steps of R, G and B Drive to set R,G,B Drive largest level of 3 color drive to "FC".

PANEL W/B

R,G,B cut off

Color Temp. x y

Cool(Hi) 0.276 0.276

Normal(Mid) 0.288 0.296

Warm(Low) 0.313 0.329

Fig. -04

2 Picture: 1) Change white balance to "Normal".

Normal PANEL W/B

White balance: R,G,B cut off 2) Repeat procedure 1) to 5) of Cool mode.

Normal PANEL W/B

Aspect: R,G,B Drive

16:9

3 Picture: 1) Change white balance to "Warm".

Normal PANEL W/B

White balance: R,G,B cut off 2) Repeat procedure 1) to 5) of Cool mode.

Warm PANEL W/B

Aspect: R,G,B Drive

16:9

4 Picture: Picture Menu 1) Change color templature to "Cool".

Normal Sub Adjust

White balance: Sub Bright

Cool

Aspect:

16:9

TH-50PHW7BX / TH-50PHW7EX / TH-50PHD7EK / TH-50PHD7ES / TH-50PHD7BK / TH-50PHD7BS / TH-50PHD7UY

INPUT Alignment menu ProcedureEquipment Setting

5 Picture: 1) Write down each color temaparature of R,G,B drive and

Normal Cut off data as follows.

Aspect:

16:9

White

RGB Gray Scale Pattern

White balance:

Cool R Drive

Normal G Drive

Warm B Drive

Balance Cool Normal Warm

R Cut off G Cut off B Cut off

2)Change input signal to 525i and 525p.

High light 75%

Low light 15% 3) Copy HD drive and cut off data of each white

balance mode to each signals position.

6 Picture: 1) Write down each color temaparature of R,G,B drive and

Normal Cut off data as follows.

Aspect:

16:9

White

RGB Gray Scale Pattern

White balance:

Cool R Drive

Normal G Drive

Warm B Drive

Balance Cool Normal Warm

R Cut off G Cut off B Cut off

2)Change input signal to 525p and 625i.

High light 75%

Low light 15% 3) Copy HD drive and cut off data of each white

balance mode to each signals position.

7 Picture: 1) Write down each color temaparature of R,G,B drive and

Normal Cut off data as follows.

Aspect:

16:9

White

RGB Gray Scale Pattern

White balance:

Cool R Drive

Normal G Drive

Warm B Drive

Balance Cool Normal Warm

R Cut off G Cut off B Cut off

2)Change input signal to 625i and 625p.

High light 75%

Low light 15% 3) Copy HD drive and cut off data of each white

balance mode to each signals position.

TH-50PHW7BX / TH-50PHW7EX / TH-50PHD7EK / TH-50PHD7ES / TH-50PHD7BK / TH-50PHD7BS / TH-50PHD7UY

12 Trouble shooting guide

12.1. Self Check

1. Self-check is used to automatically check the bus line controlled circuit of the Plasma display.

2. To get into the Self-check mode, press the volume down button on the customer controls at the front of the set, at the same time pressing the OFF-TIMER button on the remote control, and the screen will show :-

If the CCU ports have been checked and found to be incorrect Or not located then " - - " will appear in place of " OK "

12.2. No Power

12.2.1. 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.

3. Remarks Above Fan function is operated during the fans are installed.

12.2.2. Power LED no light

TH-50PHW7BX / TH-50PHW7EX / TH-50PHD7EK / TH-50PHD7ES / TH-50PHD7BK / TH-50PHD7BS / TH-50PHD7UY

12.3. No Picture

12.4. 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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