Panasonic TH-37PR10B / TH-37PR10E / TH-42PR10B / TH-42PR10E Service Manual ▷ View online
11.1. RGB white balance adjustment
41
11.2. HD white balance adjustment
43
11.3. Power control adjustment
45
12 Trouble shooting guide
46
12.1. Self Check
46
12.2. No Power
47
12.3. No Picture
47
12.4. Local screen failure
48
13 Option Setting
49
14 Conduct Views
51
14.1. P-Board (37inch)
51
14.2. P-Board (42inch)
54
14.3. HX-Board
57
14.4. GK, K and S-Board
58
14.5. DS-Board
59
14.6. DN-Board
61
14.7. D-Board
63
14.8. C1-Board (37inch)
65
14.9. C1-Board (42inch)
66
14.10. C2-Board (37inch)
67
14.11. C2-Board (42inch)
68
14.12. SC-Board
69
14.13. SU-Board (37inch)
72
14.14. SU-Board (42inch)
73
14.15. SD-Board (37inch)
74
14.16. SD-Board (42inch)
75
14.17. SS-Board
76
15 Block and Schematic Diagram
79
15.1. Schematic Diagram Notes
79
15.2. Main Block Diagram (37inch)
80
15.3. Main Block Diagram (42 inch)
81
15.4. P-Board Block Diagram
82
15.5. P-Board (1 of 6) Schematic Diagram
83
15.6. P-Board (2 of 6) Schematic Diagram
84
15.7. P-Board (3 of 6) Schematic Diagram
85
15.8. P-Board (4 of 6) Schematic Diagram
86
15.9. P-Board (5 of 6) Schematic Diagram
87
15.10. P-Board (6 of 6) Schematic Diagram
88
15.11. HX-Board Block and Schematic Diagram
89
15.12. GK and K-Board Block and Schematic Diagram
90
15.13. DS-Board (1 of 2) Block Diagram
91
15.14. DS-Board (2 of 2) Block Diagram
92
15.15. DS-Board (1 of 5) Schematic Diagram
93
15.16. DS-Board (2 of 5) Schematic Diagram
94
15.17. DS-Board (3 of 5) Schematic Diagram
95
15.18. DS-Board (4 of 5) Schematic Diagram
96
15.19. DS-Board (5 of 5) Schematic Diagram
97
15.20. DN-Board (1 of 2) Block Diagram
98
15.21. DN-Board (2 of 2) Block Diagram
99
15.22. DN-Board (1 of 6) Schematic Diagram
100
15.23. DN-Board (2 of 6) Schematic Diagram
101
15.24. DN-Board (3 of 6) Schematic Diagram
102
15.25. DN-Board (4 of 6) Schematic Diagram
103
15.26. DN-Board (5 of 6) Schematic Diagram
104
15.27. DN-Board (6 of 6) Schematic Diagram
105
15.28. D-Board Block Diagram
106
15.29. D-Board (1 of 6) Schematic Diagram
107
15.30. D-Board (2 of 6) Schematic Diagram
108
15.31. D-Board (3 of 6) Schematic Diagram
109
15.32. D-Board (4 of 6) Schematic Diagram
110
15.33. D-Board (5 of 6) Schematic Diagram
111
15.34. D-Board (6 of 6) Schematic Diagram
112
15.35. C1 and C2-Board Block Diagram
113
15.36. C1-Board (1 of 2) Schematic Diagram (37inch)
114
15.37. C1-Board (2 of 2) Schematic Diagram (37inch)
115
15.38. C1-Board (1 of 2) Schematic Diagram (42inch)
116
15.39. C1-Board (2 of 2) Schematic Diagram (42inch)
117
15.40. C2-Board (1 of 2) Schematic Diagram (37inch)
118
15.41. C2-Board (2 of 2) Schematic Diagram (37inch)
119
15.42. C2-Board (1 of 2) Schematic Diagram (42inch)
120
15.43. C2-Board (2 of 2) Schematic Diagram (42inch)
121
15.44. SC-Board Block Diagram
122
15.45. SC-Board (1 of 2) Schematic Diagram
123
15.46. SC-Board (2 of 2) Schematic Diagram
124
15.47. SU and SD-Board Block Diagram
125
15.48. SU-Board (1 of 2) Schematic Diagram (37inch)
126
15.49. SU-Board (2 of 2) Schematic Diagram (37inch)
127
15.50. SU-Board (1 of 2) Schematic Diagram (42inch)
128
15.51. SU-Board (2 of 2) Schematic Diagram (42inch)
129
15.52. SD-Board (1 of 2) Schematic Diagram (37inch)
130
15.53. SD-Board (2 of 2) Schematic Diagram (37inch)
131
15.54. SD-Board (1 of 2) Schematic Diagram (42inch)
132
15.55. SD-Board (2 of 2) Schematic Diagram (42inch)
133
15.56. SS and S-Board Block Diagram
134
15.57. SS and S-Board (1 of 2) Schematic Diagram
135
15.58. SS and S-Board (2 of 2) Schematic Diagram
136
16 Parts Location
137
16.1. Exploded View
137
16.2. Cable relation
139
16.3. Packing summary
140
17 Mechanical Replacement Parts List
142
18 Replacement Parts List
143
18.1. Replacement Parts List Notes
143
18.2. TH-37PR10B/E Electrical Replacement Parts List
144
18.3. TH-42PR10B/E Electrical Replacement Parts List
164
3
TH-37PR10B / TH-37PR10E / TH-42PR10B / TH-42PR10E
1 Applicable signals
4
TH-37PR10B / TH-37PR10E / TH-42PR10B / TH-42PR10E
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
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
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
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
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
1
and U
2
, does not exceed the following values:
For a. c.: U
1
= 35 V (peak) and U
2
= 0.35 V (peak);
For d. c.: U
1
= 1.0 V,
Note:
The limit value of U
2
= 0.35 V (peak) for a. c. and U
1
= 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
The limit value U
1
= 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.
Figure 1
5
TH-37PR10B / TH-37PR10E / TH-42PR10B / TH-42PR10E
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
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.
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
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
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).
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
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).
damage an ES device).
6
TH-37PR10B / TH-37PR10E / TH-42PR10B / TH-42PR10E