Panasonic GPH10DE, TH-37PV7F, TH-37PX7B, TH-37PX7E, TH-42PV7F Service Manual

...

ORDER NO.PCZ0706054CE

Plasma Television

Specifications

PowerSource PowerConsumption

Average use 250 W (PX7B/E) (37-inch)

Standby condition 0.7 W (Without DVB recording)

Displaypanel

Aspect Ratio 16 : 9

isible screen size

Number of pixels

Sound

Speake Audio Output 20 W [10 W + 10 W] (10 % THD)

Receiving Systems/Band name

Except B model PAL B, G, H, I, SECAM B, G, SECAML/L’

C 220-240 V, 50/60 Hz

241 W (PV7F/P) (37-inch) 270 W (PX7B/E) (42-inch) 261 W (PV7F/P) (42-inch)

20 W (With DVB recording)

94 cm (diagonal) (37-inch), 106 cm (diagonal) (42-inch) 819 mm (W) × 457 mm (H) (37-inch), 922 mm (W) × 518 mm (H) (42-inch) 737,280 (1,024 (W) × 720 (H)) [3,072 × 720 dots] (37-inch) 786,432 (1,024 (W) × 768 (H)) [3,072 × 768 dots] (42-inch)

160 mm × 42 mm × 2 pcs, 8 ohm

VHF E2 - E12 VHF H1 - H2 (ITALY) VHF A - H (ITALY) UHF E21 - E69

GPH10DE Chassis

TH-37PV7F / TH-37PV7P / TH-37PX7B / TH-37PX7E / TH-42PV7F / TH-42PV7P / TH-42PX7B / TH-42PX7E

CATV (S01 - S05) CATV S1 - S10 (M1 - M10) CATV S11 - S20 (U1 - U10) CATV S21 - S41 (Hyperband)

PAL D, K, SECAMD,

VHF R1 - R2 VHF R3 - R5 VHF R6 - R12 UHF E21 - E69

PAL 525/60 Playback of NTSC tape from some PAL Video recorders

DVB (E model only) Digital terrestrial services via VHF / UHF aerial input. M.NTSC Playback from M. NTSC Video recorders (VCR) NTSC (AVinput only) Playback from NTSC Video recorders (VCR)

· TV signals maynot be received in some areas.

· ·

B model PAL I :UHF E21 - 68

PAL 525/60 Playback of NTSC tape from some PAL Video recorders

DVB Digital terrestrial services via UHF aerial input. M.NTSC Playback from M.NTSC Video recorders (VCR). NTSC (AVinput only) Playback from NTSC Video recorders (VCR).

Aerial - Rea

VHF / UHF (Except B model), UHF (B model)

Operating Conditions Temperature: 0 °C - 35 °C

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

Connection Terminals

AV1 (Scart terminal) 21 Pin terminal (Audio/Video in, Audio/Video out, RGB in, Q-Link) AV2 (Scart terminal) 21 Pin terminal (Audio/Video in, Audio/Video out, RGB in, S-Video in, Q-Link) COMPONENT

IDEO

PB,P

AUDIO L-R RCA PIN Type × 2 0.5 V [rms] HDMI TYPE A Connectors

Output

AUDIO L-R RCA PIN Type × 2 0.5 V [rms] (high impedance)

Dimensions (W × H × D)

With Pedestal 917 mm × 665 mm × 320 mm (37-inch)

1,020 mm × 725 mm × 320 mm (42-inch)

TV only 917 mm × 620 mm × 95 mm (37-inch)

1,020 mm × 680 mm × 95 mm (42-inch)

Mass

With Pedestal 25.0 kg Net (37-inch)

28.0 kg Net (42-inch)

TV only 23.0 kg Net (37-inch)

26.0 kg Net (42-inch)

Note:

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

· ·

· This equipment complies with the EMC standards listed below.

· ·

EN55013, EN61000-3-2, EN61000-3-3, EN55020.

(VCR)

(VCR) or NTSC disc playback from DVD player and recorder.

1.0 V [p-p] (including synchronization) ± 0.35 V [p-p]

· This TV supports “HDAVI Control 2” function

· ·

TH-37PV7F / TH-37PV7P / TH-37PX7B / TH-37PX7E / TH-42PV7F / TH-42PV7P / TH-42PX7B / TH-42PX7E

CONTENTS

Page Page

1 Applicable signals 5 2 Safety Precautions

2.1. General Guidelines

2.2. Touch-Current Check

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 rear cover

6.2. Remove the rear terminal cover

6.3. Remove the P-Board

6.4. Remove the Tuner unit

6.5. Remove the DG-Board

6.6. Remove the D-Board

6.7. Remove the SU-Board

6.8. Remove the SD-Board

6.9. Remove the SC-Board

6.10. Remove the SS-Board

6.11. Remove the stand brackets

6.12. Remove the C1-Board

6.13. Remove the C2-Board

6.14. Remove the speaker L, R

6.15. Remove the S-Board

6.16. Remove the K-Board

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

6.18. 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)

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 Adjustment

12.1. Sub-Contrast adjustment

12.2. PAL panel white balance adjustment

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

14 15

17 18

19 20 21 22 23

24 26

27 28 28 29 29

30 31

6 6

7 8 9

12.3. HD white balance adjustment

13 Hotel mode 14 Conductor Views

14.1. P-Board (42 inch)

14.2. P-Board (37 inch)

14.3. DG-Board

14.4. D-Board

14.5. C1-Board (42 inch)

14.6. C1-Board (37 inch)

14.7. C2-Board (42 inch)

14.8. C2-Board (37 inch)

14.9. SC-Board

14.10. SU-Board (42 inch)

14.11. SU-Board (37 inch)

14.12. SD-Board (42 inch)

14.13. SD-Board (37 inch)

14.14. SS-Board

14.15. K and S-Board

15 Sche matic and Block Diagr am

15.1. Schematic Diagram Note

15.2. Main Block Diagram (42 inch)

15.3. Main Block Diagram (37 inch)

15.4. P-Board Block 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. DG-Board (1 of 4) Block Diagram

15.12. DG-Board (2 of 4) Block Diagram

15.13. DG-Board (3 of 4) Block Diagram

15.14. DG-Board (4 of 4) Block Diagram

15.15. DG-Board (1 of 16) Schematic Diagram

15.16. DG-Board (2 of 16) Schematic Diagram

15.17. DG-Board (3 of 16) Schematic Diagram

15.18. DG-Board (4 of 16) Schematic Diagram

15.19. DG-Board (5 of 16) Schematic Diagram

15.20. DG-Board (6 of 16) Schematic Diagram

15.21. DG-Board (7 of 16) Schematic Diagram

15.22. DG-Board (8 of 16) Schematic Diagram

15.23. DG-Board (9 of 16) Schematic Diagram

15.24. DG-Board (10 of 16) Schematic Diagram

15.25. DG-Board (11 of 16) Schematic Diagram

15.26. DG-Board (12 of 16) Schematic Diagram

15.27. DG-Board (13 of 16) Schematic Diagram

15.28. DG-Board (14 of 16) Schematic Diagram

15.29. DG-Board (15 of 16) Schematic Diagram

15.30. DG-Board (16 of 16) Schematic Diagram

15.31. D-Board Block Diagram

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

33 35

35 38 41 44 46 47 48 49 50 53 54 55 56 57 59

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

TH-37PV7F / TH-37PV7P / TH-37PX7B / TH-37PX7E / TH-42PV7F / TH-42PV7P / TH-42PX7B / TH-42PX7E

15.33. D-Board (2 of 6) Schematic Diagram 93

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

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

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

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

15.38. C1 and C2 Block Diagram

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

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

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

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

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

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

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

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

15.47. SC-Board Block Diagram

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

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

15.50. SU and SD-Board Block Diagram

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

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

94 95 96 97 98

99 100 101 102 103 104 105 106 107 108 109 110 111 112

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

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

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

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

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

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

15.59. SS-Board Block Diagram

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

15.61. SS-Board (2 of 2) Schematic Diagram

15.62. K-Board Schematic Diagram

16 Explo ded Views & Replacement Parts List

16.1. Exploded Views

16.2. Packing Exploded Views (1)

16.3. Packing Exploded Views (2)

16.4. Packing Exploded Views (3)

16.5. Replacement Parts List Notes

16.6. Mechanical Replacement Parts List

16.7. Electrical Replacement Parts List (37inch)

16.8. Electrical Replacement Parts List (42inch)

113 114 115 116 117 118 119 120 121 122

123

123 124 125 126 127 128 130 153

1 Applicable signals

TH-37PV7F / TH-37PV7P / TH-37PX7B / TH-37PX7E / TH-42PV7F / TH-42PV7P / TH-42PX7B / TH-42PX7E

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) aresupplied 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 straightin 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.

2.2. Touch-Current Check

1. Plug the AC cord directly into the AC outlet. Do not use an isolation transformer for this check.

2. Connect a measuring network for touch currents 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 Leakage Current Tester (Simpson 228 or equivalent) to measure the potential across the measuring network.

4. Check each exposed metallic part, and measure the voltage at each point.

5. Reserve the AC plug in the AC outlet and repeat each of the above measure.

6. The potential at any point (TOUGH CURRENT) expressed as voltage U For a. c.: U For d. c.: U

= 35 V (peak) and U2= 0.35 V (peak);

= 1.0 V,

Note:

The limit value of U

= 0.35 V (peak) for a. c. and U1= 1.0 V for d. c. correspond to the values 0.7 mA (peak) a. c. and 2.0

mA d. c. The limit value U

= 35 V (peak) for a. c. correspond to the value 70 mA (peak) a. c. for frequencies greater than 100 kHz.

7. In case a measurement is out 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.

and U2, does not exceed the following values:

Figure 1

TH-37PV7F / TH-37PV7P / TH-37PX7B / TH-37PX7E / TH-42PV7F / TH-42PV7P / TH-42PX7B / TH-42PX7E

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 ESdevices. (Otherwise ham less motion suchas 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-37PV7F / TH-37PV7P / TH-37PX7B / TH-37PX7E / TH-42PV7F / TH-42PV7P / TH-42PX7B / TH-42PX7E

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.

5 Service Hint

Remove the Rear Cover

TH-37PV7F / TH-37PV7P / TH-37PX7B / TH-37PX7E / TH-42PV7F / TH-42PV7P / TH-42PX7B / TH-42PX7E

Board Name Function Board Name Function

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

DG Digital Signal Processor, Micon, HDMI Interface

Peaks Lite 2, DC-DC, Speaker out Sound Processor, AV Terminal, AV Switch

K Remote receiver, Power LED, Key Switch SU Scan out (Upper) S Power Switch SD Scan out (Lower)

C1 Data Driver (Lower Right) C2 Data Driver (Lower Left) SC Scan Drive

SS Sustain Drive

TH-37PV7F / TH-37PV7P / TH-37PX7B / TH-37PX7E / TH-42PV7F / TH-42PV7P / TH-42PX7B / TH-42PX7E

6 Plasma panel replacement method

6.1. Remove the rear cover

1. See Service Hint (Section 5)

6.2. Remove the rear terminal cover

1. Remove the screws (×8 ,×5 ,×1 ,×2 ).

2. Remove the rear terminal cover.

6.4. Remove the Tuner unit

1. Unlock the cable clampers to free the cable.

2. Disconnect the connectors (DG1, DG5, DG6, DG7, and DG12).

3. Remove the screws (×4

) and remove the tuner unit.

6.3. 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, P6, P7, P9, P11, P12 and P25).

3. Remove the screws (×10

) and remove the P-Board.

6.5. Remove the DG-Board

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

2. Remove the screws (×1 bracket.

3. Remove the screw (×1 metal.

4. Remove the screws (×8

) and remove the SD card

) and remove the tuner fixing

) and remove the DG-Board.

TH-37PV7F / TH-37PV7P / TH-37PX7B / TH-37PX7E / TH-42PV7F / TH-42PV7P / TH-42PX7B / TH-42PX7E

6.6. Remove the D-Board

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

2. Disconnect the connectors (D5 and D25).

3. Disconnect the flexible cables (D20, D31 and D32).

4. Remove the screws (×4

) and remove the D-Board.

6.7. Remove the SU-Board

1. Remove the screws (×2 ).

2. Remove the flexible cables (SU1, SU2, SU3 and SU4 (42 inch only)) connected to the SU-Board and remove the bridge connector (SC45-SU45).

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

42 inch

37 inch

6.8. Remove the SD-Board

1. Remove the screws (×2 ).

2. Remove the flexible cables (SD1, SD2, SD3 and SD4 (42 inch only)) connected to the SD-Board and remove the bridge connector (SC46-SD46).

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

42 inch

TH-37PV7F / TH-37PV7P / TH-37PX7B / TH-37PX7E / TH-42PV7F / TH-42PV7P / TH-42PX7B / TH-42PX7E

37 inch

6.9. Remove the SC-Board

1. Remove the SU-Board and SD-Board. (See section 6.7. and 6.8.)

2. Unlock the cable clampers to free the cable.

3. Disconnect the connector (SC2).

4. Disconnect the flexible cable (SC20).

5. Remove the screws (×6

) and remove the SC-Board.

6.10. Remove the SS-Board

1. Disconnect the connectors (SS11, SS12, SS23 and SS34).

2. Disconnect the flexible cables (SS53A, SS54A, SS55A and SS56A) (42 inch)/ (SS53, SS54, SS55, and SS56) (37inch)

3. Remove the screws (×6

) and remove the SS-Board.

6.11. 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 (×6

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

TH-37PV7F / TH-37PV7P / TH-37PX7B / TH-37PX7E / TH-42PV7F / TH-42PV7P / TH-42PX7B / TH-42PX7E

6.12. Remove the C1-Board

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

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 (C10 and C11).

6. Remove the screws (×4

42 inch

37 inch

) and remove the C1-Board.

37 inch

6.14. Remove the speaker L, R

1. Disconnect the connector (DG12). (See section 6.4.)

2. Remove the screws (×4 L, R.

each) and remove the speaker

6.13. Remove the C2-Board

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

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 (C20 and C21).

6. Disconnect the connector (C23).

7. Remove the screws (×4

42 inch

) and remove the C2-Board.

6.15. Remove the S-Board

1. Remove the screws (×2 ) and remove the S-Board metal frame.

2. Disconnect the connector (S1).

3. Remove the screws (×2

) and remove the S-Board.

TH-37PV7F / TH-37PV7P / TH-37PX7B / TH-37PX7E / TH-42PV7F / TH-42PV7P / TH-42PX7B / TH-42PX7E

6.16. Remove the K-Board

1. Remove the S-Board. (See section 6.13.)

2. Unlock the cable clampers to free the cable.

3. Disconnect the connectors (DG). (See section 6.4.)

4. Remove the screws (×3

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

) and remove the K-Board.

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

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 (×3

each).

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

6. Remove the spacers and spacer rings (×6 ).

3. Replace the servicing stand and stand the set.

4. Remove the cabinet assy and the plasma panel fastening screws (×7

TH-37PV7F / TH-37PV7P / TH-37PX7B / TH-37PX7E / TH-42PV7F / TH-42PV7P / TH-42PX7B / TH-42PX7E

6.18. 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 (×16) 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 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.

TH-37PV7F / TH-37PV7P / TH-37PX7B / TH-37PX7E / TH-42PV7F / TH-42PV7P / TH-42PX7B / TH-42PX7E

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)

The wire is dressed as shown in figure.

TH-37PV7F / TH-37PV7P / TH-37PX7B / TH-37PX7E / TH-42PV7F / TH-42PV7P / TH-42PX7B / TH-42PX7E

8.2. Lead of Wiring (2)

The wire is dressed as shown in figure.

TH-37PV7F / TH-37PV7P / TH-37PX7B / TH-37PX7E / TH-42PV7F / TH-42PV7P / TH-42PX7B / TH-42PX7E

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. Screen display

9.1.3. Check Point

Confirm the following parts if NG was displayed.

9.1.4. Exit

Disconnect the AC cord from wall outlet.

TH-37PV7F / TH-37PV7P / TH-37PX7B / TH-37PX7E / TH-42PV7F / TH-42PV7P / TH-42PX7B / TH-42PX7E

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-37PV7F / TH-37PV7P / TH-37PX7B / TH-37PX7E / TH-42PV7F / TH-42PV7P / TH-42PX7B / TH-42PX7E

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.)

TH-37PV7F / TH-37PV7P / TH-37PX7B / TH-37PX7E / TH-42PV7F / TH-42PV7P / TH-42PX7B / TH-42PX7E

9.4. No Picture

TH-37PV7F / TH-37PV7P / TH-37PX7B / TH-37PX7E / TH-42PV7F / TH-42PV7P / TH-42PX7B / TH-42PX7E

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

TH-37PV7F / TH-37PV7P / TH-37PX7B / TH-37PX7E / TH-42PV7F / TH-42PV7P / TH-42PX7B / TH-42PX7E

10 Service Mode

10.1. How to enter into Service Mode

While pressing [VOLUME ( - )] button of the main unit, press [0] button of the remote control three times within 3 seconds.

10.1.1. 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 “RED” button...All Sub items Selection in reverse direction “GREEN” button...All Sub items Selection in forward direction “VOL” button...Value of sub items change in forward direction ( + ), in reverse direction ( - )

TH-37PV7F / TH-37PV7P / TH-37PX7B / TH-37PX7E / TH-42PV7F / TH-42PV7P / TH-42PX7B / TH-42PX7E

10.1.2. 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.

· ·

10.1.3. How to exit

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

TH-37PV7F / TH-37PV7P / TH-37PX7B / TH-37PX7E / TH-42PV7F / TH-42PV7P / TH-42PX7B / TH-42PX7E

10.2. Service tool mode

10.2.1. How to access

1. Select “SRV-TOOL” in Service Mode.

2. Press [OK] button on the remote control.

10.2.2. Display of SOS History

SOS History (Number of LED blinking) indication. From left side; Last SOS, before Last, three occurrence before, 2nd occurrence after shipment, 1st occurrence after shipment. This indication will be cleared by “Self-check indication and forced to factory shipment setting”.

10.2.3. POWER ON TIME/COUNT

Time : Cumulative power on time, indicated hour : minute by decimal Count : Number of On times by decimal Note : This indication will not cleared by self-check or any command.

10.2.4. Exit

1. Disconnect the AC code from wall outlet.

11 Adjustment Procedure

TH-37PV7F / TH-37PV7P / TH-37PX7B / TH-37PX7E / TH-42PV7F / TH-42PV7P / TH-42PX7B / TH-42PX7E

11.1. Driver Set-up

11.1.1. Item / Preparation

1. Input a white signal to plasma video input.

2. Set the picture controls as follows. Picture menu: Dynamic PNR: OFF Aspect: 16:9

Caution

1. First perform Vsus adjustment.

2. Confirmation of Vscn voltage should be performed after

confirmation of Vad adjustment. When Vad=-105V, Voltage of Vscn is 40V ±4V.

11.1.2. Adjustments

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

Check or adjust the following voltages with the multimeter.

Name Test Point Voltage Volume Remarks

Vsus TPVSUS

(SS) Ve TPVE (SS) Ve ± 1V VR6000 (SS) * Vset TPVSET

(SC) Vad TPVAD (SC) -105V ± 1V VR6600

Vscn TPVSCN

(SC) Vda TPVDA (SS) 75V + 1V, -2V Fixed PFC C446(+)(-) 396V±0.5V R443 (P)

*See the Panel label.

Vsus ± 2V R628 (P) *

330V ± 7V Fixed

(SC)

Vad+145V ±4VFixed

TH-37PV7F / TH-37PV7P / TH-37PX7B / TH-37PX7E / TH-42PV7F / TH-42PV7P / TH-42PX7B / TH-42PX7E

11.2. Initialization Pulse Adjust

1. Input the White signal to plasma video input.

2. Set the picture controls as follows. Picture menu : Dynamic PNR : OFF Aspect : 16:9

3. Connect Oscilloscope to TPSC1 (SC). Check and adjust that the stand down pulse(T2) period are each within specification.

Test point Volume Level

T2 TPSC1 (SC) VR6602 (SC) 190 ± 10µ Sec

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

11.3.1. Caution

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

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

Adjust the following voltages with the multimeter.

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

P Board Vsus TPVSUS (SS) Vsus ± 2V R628 (P) *

PFC C446 396V ± 0.5V R443 (P) SC Board Vad TPVAD (SC) -105V ± 1V VR6600 (SC) SS Board Ve TPVE (SS) Ve ± 1V VR6000 (SS) * D, DG Board White balance and Sub brightness for NTSC, PAL, HD, PC and 625i signals

*See the Panel label.

Caution:

Absolutely do not reduce Vsus below Ve not to damage the P.C.B.

11.4. Adjustment Volume Location

TH-37PV7F / TH-37PV7P / TH-37PX7B / TH-37PX7E / TH-42PV7F / TH-42PV7P / TH-42PX7B / TH-42PX7E

11.5. Test Point Location

TH-37PV7F / TH-37PV7P / TH-37PX7B / TH-37PX7E / TH-42PV7F / TH-42PV7P / TH-42PX7B / TH-42PX7E

12 Adjustment

12.1. Sub-Contrast adjustment

Name of measuring instrument Connection Remarks

RF generator Base Band generator

Preparation (AV) Remarks

1. Receive AV1 (PAL 100% Full White or Split Colour bar shown as below) .

2. Goes into service mode.

3. Push “1” or “2” key, and goes into service mode for “Sub-Contrast”. Adjustment of AV system Remarks

1. The colour key yellow button of remote control is pushed.

2. The OSD character of sub-contrast becomes red.

(Inside under automatic adjustment)

3. The OSD character of sub-contrast returns to black.

4. End.

Preparation (RF) Remarks

1. Receive RF (PAL 100% Full White or Split Colour bar shown as below.)

2. Goes into service mode.

3. Push “1” or “2” key, and goes into service mode for “Sub-Contrast”. Adjustment of RF system Remarks

1. The colour key yellow button of remote control is pushed.

2. The OSD character of sub-contrast becomes red.

(Inside under automatic adjustment)

3. The OSD character of sub-contrast returns to black.

4. End.

Preparation (HD) Remarks

1. Receive Component

(1080i/ 60Hz or 1080i/ 50Hz, 100% Full White or Split colour bar as shown below.)

2. Goes into service mode.

3. Push “1” or “2” key, and goes into service mode for “Sub-Contrast”. Adjustment of HD system Remarks

1. The colour key yellow button of remote control is pushed.

2. The OSD character of sub-contrast becomes red.

(Inside under automatic adjustment)

3. The OSD character of sub-contrast returns to black.

4. End.

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