Panasonic TH-42PX600U Service manual

Specifications

ORDER NO.MTNC060475CE

B19 Canada: B07

Digital High Definition Plasma Television

TH-42PX600U

GP9DU Chassis

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

Maximum 399 W Standby condition 0.2 W (Without CableCARDTM)

14.0 W (With CableCARDTM)

Plasma Displ ay panel

Drive method AC type Aspect Ratio 16 : 9 Contrast Ratio (max) 10000 : 1 Visible screen size

(W × H × Diagonal) (No. of pixels)

Sound

Speaker Woofer 3.2 ” (80 mm) × 2 pcs, 8 W

Audio Output 31 W [13 W + 2.5 W, 13 W + 2.5 W] (10 % THD)

PC signals VGA, SVGA, XGA

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)

109 cmV

37.1 ” × 21.3 ” × 42.8 ” (944 mm × 542 mm × 1,088 mm) 786,432 (1,024 (W) × 768 (H)) [3,072 × 768 dots]

Speaker 0.9 ” × 4.0 ” (23 mm × 100 mm) × 2 pcs, 8W

SXGA (compressed) Horizontal scanning frequency 31 - 69 kHz Vertical scanning frequency 59 - 86 Hz

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]

TH-42PX600U

COMPONENT VIDEO INPUT 1-2

HDMI 1-2 TYPE A Connector

PC D-SUB 15 PIN: R, G, B/0.7 V [p-p] (75 W)

IR Blaster G-LINK Jack × 1 Card slot SD CARD slot × 1, CableCARDTMslot × 1 AV PROG. OUT VIDEO: RCA PIN Type × 1 1.0 V [p-p] (75 W)

DIGITAL AUDIO OUT PCM/Dolby Digital, Fiber Optic

FEATURES 3D Y/C FILTER CableCARDTMslot

Dimensions (W × H × D)

Including pedestal 42.4 ” × 29.8 ” × 14.6 ” (1,077 mm × 755 mm × 369 mm) TV Set only 42.4 ” × 27.2 ” × 5.5 ” (1,077 mm × 689 mm × 138 mm)

Weight

Including pedestal 98.1 lb. (44.5 kg) TV Set only 71.7 lb. (32.5 kg)

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]

HD, VD/1.0 - 5.0 V [p-p] (high impedance)

AUDIO L-R: Stereo Mini Jack ( 3.5mm) × 1

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

CLOSED CAPTION BBE VIVA 3D Photo Viewer TV GUIDE

Note:

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

-Chip Split-Screen

CONTENTS

Page Page

1 Applicable signals 5 2 Safety Precautions

2.1. General Guidelines

3 Prevention of Electro Static Discharge (ESD) to

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

6.1. Remove the Back cover

6.2. Remove the fan

6.3. Remove the Speaker box ass'y (left)

6.4. Remove the Speaker box ass'y (right)

6.5. Remove the rear terminal cover

6.6. Remove the P-Board

6.7. Remove the PA-Board

6.8. Remove the tuner unit

6.9. Remove the DT-Board

6.10. Remove the DG-Board

6.11. Remove the H-Board

6.12. Remove the HC-Board

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

7 8 9

6.13. Remove the D-Board

6.14. Remove the SU-Board

6.15. Remove the SD-Board

6.16. Remove the SC-Board

6.17. Remove the SS-Board

6.18. Remove the C1-Board

6.19. Remove the C2-Board

6.20. Remove the front bracket

6.21. Remove the G-Board and GK-Board

6.22. Remove the S-Board

6.23. Remove the stand brackets

6.24. Remove the GS-Board

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

6.26. Remove the squawker speaker

6.27. Remove the K-Board

6.28. Replace the plasma panel (finished)

7 Caution statement

7.1. Caution statement.

8 Location of Lead Wiring

13 13 13 14 14 14 14 15 15 15 15 16

16 17 17 18

8.1. Lead of Wiring (1) 20

8.2. Lead of Wiring (2)-1

8.3. Lead of Wiring (2)-2

8.4. Lead of Wiring (3)-1

8.5. Lead of Wiring (3)-2

8.6. Lead of Wiring (4)-1

8.7. Lead of Wiring (4)-2

8.8. Lead of Wiring (5)

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 Servi cema n Mode

10.1. How to enter into Serviceman Mode

10.2. Contents of adjustment mode

10.3. Memory edit mode

10.4. Device data 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. White balance adjustment

12.2. Sub bright adjustment

12.3. ABL operation level adjustment

13 Hotel mode 14 Conductor Views

14.1. P-Board

14.2. PA-Board

14.3. H-Board

14.4. G and GS-Board

14.5. GK, HC, K and S-Board

14.6. DG-Board

14.7. DT-Board

14.8. D-Board

14.9. C1-Board

14.10. C2-Board

14.11. SC-Board

14.12. SU-Board

14.13. SD-Board

14.14. SS-Board

15 Schematic and Block Diagram

15.1. Schematic Diagram Notes

15.2. Main Block Diagram

15.3. P-Board Block Diagram

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

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

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

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

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

15.9. P-Board (6 of 6) Schematic Diagram 21 22 23 24 25 26 27

28 30 31 32 33

34 34 35 36

37 38 38 39 39

40 42 43

44 45

45 48 50 52 53 54 56 58 60 61 62 65 66 67

69 70 71 72 73 74 75 76

15.10. PA-Board (1 of 2) Block Diagrarm

15.11. PA-Board (2 of 2) Block Diagrarm

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

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

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

15.15. H-Board Block Diagram

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

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

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

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

15.20. G-Board Schematic Diagram

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

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

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

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

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

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

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

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

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

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

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

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

15.33. DT and GS-Board Block Diagram

15.34. DT-Board (1 of 7) Schematic Diagram

15.35. DT-Board (2 of 7) Schematic Diagram

15.36. DT-Board (3 of 7) Schematic Diagram

15.37. DT-Board (4 of 7) and GS-Board Schematic Diagram

15.38. DT-Board (5 of 7) Schematic Diagram

15.39. DT-Board (6 of 7) Schematic Diagram

15.40. DT-Board (7 of 7) Schematic Diagram

15.41. D-Board Block Diagram

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

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

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

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

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

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

15.48. C1 and C2-Board Block Diagram

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

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

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

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

15.53. SC, SU and SD-Board Block Diagram

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

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

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

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

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

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

15.60. SS-Board Block Diagram

15.61. SS-Board Schematic Diagram

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

TH-42PX600U

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

131

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16.1. Parts Location 131

16.2. Packing Exploded Views

16.3. Mechanical Replacement Parts List

132 133

17 Elect ri cal Replacement Parts List

17.1. Replacement Parts List Notes

17.2. Electrical Replacement Parts List

134

134 135

1 Applicable signals

TH-42PX600U

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-42PX600U

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-42PX600U

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

TH-42PX600U

Board Name Function Board Name Function

P Power Supply SC Scan Drive

PA DC-DC Converter,

Speaker out, Audio AMP, Fan Control

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

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

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

TH-42PX600U

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 Speaker box ass’y (right)

1. Unlock the cable clampers to free the cable.

2. Disconnect the relay coupler.

3. Remove the Speaker box ass’y (right).

6.5. Remove the rear terminal cover

6.3. Remove the Speaker box ass’y (left)

1. Unlock the cable clampers to free the cables.

2. Disconnect the relay coupler.

3. Remove the Speaker box ass’y (left).

1. Remove the screws (×6 ,×6 ,×2 ).

2. Remove the rear terminal cover.

6.6. Remove the P-Board

TH-42PX600U

6.8. Remove the tuner unit

Caution:

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

1. Unlock the cable clampers to free the cable.

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

3. Remove the screws (×7

) and remove the P-Board.

1. Unlock the cable clampers to free the cable.

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

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

4. Remove the screws (×4

) remove the tuner unit.

6.7. Remove the PA-Board

1. Unlock the cable clampers to free the cable.

2. Disconnect the couplers (PA1, PA2, PA5, PA10, PA31, PA32, PA33 and PA40).

3. Disconnect the flexible cable (PA20).

4. Remove the screws (×4

5. Remove the PA-Board.

) and remove the earth cable.

6.9. Remove the DT-Board

1. Unlock the cable clampers to free the cable.

2. Disconnect the couplers (HC06 and DT10).

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

Board unit.)

) remove the DT-Board unit.

TH-42PX600U

4. Disconnect the coupler (DT07)

5. Remove the screws (×2

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

6.10. Remove the DG-Board

6.11. Remove the H-Board

1. Unlock the cable clampers to free the cable.

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

3. Disconnect the flexible cable (H1).

4. Remove the screws (×6

) and remove the H-Board.

1. Remove the DT-Board. (See section 6.9.)

2. Remove the screws (×8 metal frame.

) and remove the DT-Board

3. Disconnect the coupler (DG2).

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

5. Remove the screw (×1

) remove the DG-Board.

6.12. Remove the HC-Board

TH-42PX600U

6.14. Remove the SU-Board

1. Disconnect the couple (HC06).

2. Disconnect the flexible cable (HC15).

3. Remove the screws (×2

) and remove the HC-Board.

6.13. Remove the D-Board

1. Remove the tuner unit. (See section 6.8.)

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

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

4. Remove the screws (×4

) and remove the D-Board.

1. Remove the screws (×2 ).

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

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

6.15. Remove the SD-Board

1. Remove the screws (×2 ).

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

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

TH-42PX600U

6.16. Remove the SC-Board

6.18. Remove the C1-Board

1. Unlock the cable clampers to free the cable.

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

3. Remove the screws (×6

) and remove the SC-Board.

6.17. Remove the SS-Board

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

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

3. Remove the screws (×6

) and remove the SS-Board.

1. Remove the tuner unit. (See section 6.8.)

2. Unlock the cable clampers to free the cable.

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

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

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

6. Remove the screws (×4

) and remove the C1-Board.

6.19. Remove the C2-Board

1. Remove the tuner unit. (See section 6.8.)

2. Unlock the cable clampers to free the cable.

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

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

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

6. Disconnect the coupler (C23).

7. Remove the screws (×4

) and remove the C2-Board.

6.20. Remove the front bracket

TH-42PX600U

6.22. Remove the S-Board

1. Unlock the cable clampers to free the cable.

2. Disconnect the couplers (G1 and G51).

3. Remove the screws (×2

) and remove the front bracket.

6.21. Remove the G-Board and GKBoard

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

2. Remove the screws (×3

metal frame.

) and remove the front side

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.

6.23. Remove the stand brackets

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

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

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

3. Remove the screws (×3 ) and disconnect the couplers (G3-GK3).

4. Remove the G-Board and GK-Board.

TH-42PX600U

6.24. Remove the GS-Board

1. Remove the stand bracket R. (See section 6.23.)

2. Unlock the cable clampers to free the cable.

3. Disconnect the coupler (G52).

4. Remove the screws (×3

5. Remove the SD card unit.

6. Remove the screws (×2 ) and remove the GS-Board cover.

7. Remove the GS-Board.

3. Replace the servicing stand and stand the set.

4. Remove the front frame and the plasma panel fastening screws (×12

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

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

1. Remove the plasma panel section from the servicing stand

and lay on a fiat surface such as a table (convered) with the plasma panel surface facing download.

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

each).

6.26. Remove the squawker speaker

TH-42PX600U

6.27. Remove the K-Board

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

2. Remove the screws (×12

3. Remove the glass holder R and L.

4. Remove the screws (×2 ).

5. Remove the squawker speaker.

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

2. Remove the glass holder R and L. (See section 6.26.)

3. Remove the screws (×3

4. Remove the bottom shield.

5. Remove the screws (×5

6. Remove the glass holder bottom R and L.

7. Remove the screws (×9

8. Remove the glass holder bottom.

)

9. Remove the screws (×2 ).

10. Disconnect the couplers (K1 and K2).

11. Remove the K-board.

TH-42PX600U

6.28. Replace the plasma panel (finished)

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

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

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

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

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

R) to the new plasma panel.

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

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

the new plasma panel.

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

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.

TH-42PX600U

8 Location of Lead Wiring

8.1. Lead of Wiring (1)

8.2. Lead of Wiring (2)-1

TH-42PX600U

8.3. Lead of Wiring (2)-2

8.4. Lead of Wiring (3)-1

TH-42PX600U

8.5. Lead of Wiring (3)-2

8.6. Lead of Wiring (4)-1

TH-42PX600U

8.7. Lead of Wiring (4)-2

8.8. Lead of Wiring (5)

TH-42PX600U

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

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.

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.

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 GC3FS IC4020 GP3FS DG-Board GC5 IC4037 GC5 Processor DG-Board HDMI IC4026 HDMI I/F Reciever DG-Board MEM IC1102 EEPROM DG-Board RTC - Real Time Clock PANEL IC9003 MICOM D-Board

TH-42PX600U

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 blinkes of the Power LED on the front panel of the unit.

+ 135 hidden pages