Panasonic TX-PR65VT20 Service Manual ▷ View online
ORDER NO.PCZ1007126CE
Plasma Television
Model No.
TX-PR65VT20
GPF13DDE Chassis
2
TABLE OF CONTENTS
PAGE
PAGE
1 Safety Precautions---------------------------------------------------------------------
3
1.1. General Guidelines -----------------------------------------------------------
3
1.2. Touch-Current Check --------------------------------------------------------
3
2 Warning ------------------------------------------------------------------------------------
4
2.1. Prevention of Electrostatic Discharge (ESD) to
Electrostatically Sensitive (ES) Devices---------------------------------
4
2.2. About lead free solder (PbF) -----------------------------------------------
5
3 Service Navigation ---------------------------------------------------------------------
6
3.1. PCB Layout---------------------------------------------------------------------
6
3.2. Applicable signals-------------------------------------------------------------
7
4 Specifications ---------------------------------------------------------------------------
8
5 Technical Descriptions -------------------------------------------------------------
10
5.1. Service port (M3 mini Jack) Specifications ---------------------------
10
6 Service Mode --------------------------------------------------------------------------
13
6.1. How to enter into Service Mode -----------------------------------------
13
6.2. Option - Mirror ---------------------------------------------------------------
15
6.3. Service tool mode-----------------------------------------------------------
15
6.4. Hotel mode -------------------------------------------------------------------
16
6.5. Data Copy by SD Card ----------------------------------------------------
17
7 Troubleshooting Guide -------------------------------------------------------------
20
7.1. Check of the IIC bus lines-------------------------------------------------
20
7.2. Power LED Blinking timing chart ----------------------------------------
21
7.3. No Power----------------------------------------------------------------------
22
7.4. No Picture---------------------------------------------------------------------
23
7.5. Local screen failure---------------------------------------------------------
24
8 Service Fixture & Tools-------------------------------------------------------------
25
8.1. SC jig---------------------------------------------------------------------------
25
9 Disassembly and Assembly Instructions ------------------------------------
26
9.1. Remove the Rear cover ---------------------------------------------------
26
9.2. Remove the AC inlet -------------------------------------------------------
26
9.3. Remove the P-Board-------------------------------------------------------
26
9.4. Remove the Side terminal cover and the Rear AV panel ---------
26
9.5. Remove the Tuner unit ----------------------------------------------------
27
9.6. Remove the A-Board-------------------------------------------------------
27
9.7. Remove the Speakers -----------------------------------------------------
27
9.8. Remove the Woofer box---------------------------------------------------
27
9.9. Remove the Fan-------------------------------------------------------------
28
9.10. Remove the SU-Board-----------------------------------------------------
28
9.11. Remove the SD-Board-----------------------------------------------------
28
9.12. Remove the SC-Board-----------------------------------------------------
29
9.13. Remove the SS2-Board ---------------------------------------------------
29
9.14. Remove the SS3-Board ---------------------------------------------------
29
9.15. Remove the SS-Board-----------------------------------------------------
29
9.16. Remove the Support metal -----------------------------------------------
30
9.17. Remove the Hanger metals ----------------------------------------------
30
9.18. Remove the D-Board-------------------------------------------------------
30
9.19. Remove the C1-Board -----------------------------------------------------
30
9.20. Remove the C2-Board -----------------------------------------------------
31
9.21. Remove the C3-Board -----------------------------------------------------
31
9.22. Remove the C4-Board -----------------------------------------------------
31
9.23. Remove the C5-Board -----------------------------------------------------
31
9.24. Remove the C6-Board -----------------------------------------------------
31
9.25. Remove the Plasma panel section from the Cabinet assy -------
32
9.26. Remove the Contact metals ----------------------------------------------
32
9.27. Remove the K-Board-------------------------------------------------------
33
9.28. Remove the V-Board -------------------------------------------------------
33
9.29. Replace the plasma panel ------------------------------------------------
33
10 Measurements and Adjustments------------------------------------------------
34
10.1. Adjustment--------------------------------------------------------------------
34
11 Block Diagram-------------------------------------------------------------------------
39
11.1. Main Block Diagram --------------------------------------------------------
39
11.2. Block (1/5) Diagram --------------------------------------------------------
40
11.3. Block (2/5) Diagram --------------------------------------------------------
41
11.4. Block (3/5) Diagram --------------------------------------------------------
42
11.5. Block (4/5) Diagram --------------------------------------------------------
43
11.6. Block (5/5) Diagram --------------------------------------------------------
44
12 Wiring Connection Diagram ------------------------------------------------------
45
12.1. Caution statement.----------------------------------------------------------
45
12.2. Wiring (1)----------------------------------------------------------------------
45
12.3. Wiring (2)----------------------------------------------------------------------
46
12.4. Wiring (3)----------------------------------------------------------------------
46
12.5. Wiring (4)----------------------------------------------------------------------
47
12.6. Wiring (5)----------------------------------------------------------------------
47
12.7. Wiring (6)----------------------------------------------------------------------
48
13 Schematic Diagram------------------------------------------------------------------
49
13.1. Schematic Diagram Note -------------------------------------------------
49
13.2. P(MAIN)-Board (1/3) Schematic Diagram ----------------------------
50
13.3. P(MAIN)-Board (2/3) Schematic Diagram ----------------------------
51
13.4. P(MAIN)-Board (3/3) Schematic Diagram ----------------------------
52
13.5. P(SUB)-Board Schematic Diagram-------------------------------------
53
13.6. A-Board (1/25) Schematic Diagram ------------------------------------
54
13.7. A-Board (2/25) Schematic Diagram ------------------------------------
55
13.8. A-Board (3/25) Schematic Diagram ------------------------------------
56
13.9. A-Board (4/25) Schematic Diagram ------------------------------------
57
13.10. A-Board (5/25) Schematic Diagram ------------------------------------
58
13.11. A-Board (6/25) Schematic Diagram ------------------------------------
59
13.12. A-Board (7/25) Schematic Diagram ------------------------------------
60
13.13. A-Board (8/25) Schematic Diagram ------------------------------------
61
13.14. A-Board (9/25) Schematic Diagram ------------------------------------
62
13.15. A-Board (10/25) Schematic Diagram ----------------------------------
63
13.16. A-Board (11/25) Schematic Diagram-----------------------------------
64
13.17. A-Board (12/25) Schematic Diagram ----------------------------------
65
13.18. A-Board (13/25) Schematic Diagram ----------------------------------
66
13.19. A-Board (14/25) Schematic Diagram ----------------------------------
67
13.20. A-Board (15/25) Schematic Diagram ----------------------------------
68
13.21. A-Board (16/25) Schematic Diagram ----------------------------------
69
13.22. A-Board (17/25) Schematic Diagram ----------------------------------
70
13.23. A-Board (18/25) and V-Board Schematic Diagram-----------------
71
13.24. A-Board (19/25) Schematic Diagram ----------------------------------
72
13.25. A-Board (20/25) Schematic Diagram ----------------------------------
73
13.26. A-Board (21/25) and K-Board Schematic Diagram-----------------
74
13.27. A-Board (22/25) Schematic Diagram ----------------------------------
75
13.28. A-Board (23/25) Schematic Diagram ----------------------------------
76
13.29. A-Board (24/25) Schematic Diagram ----------------------------------
77
13.30. A-Board (25/25) Schematic Diagram ----------------------------------
78
13.31. D-Board (1/5) Schematic Diagram--------------------------------------
79
13.32. D-Board (2/5) Schematic Diagram--------------------------------------
80
13.33. D-Board (3/5) Schematic Diagram--------------------------------------
81
13.34. D-Board (4/5) Schematic Diagram--------------------------------------
82
13.35. D-Board (5/5) Schematic Diagram--------------------------------------
83
13.36. C1-Board Schematic Diagram -------------------------------------------
84
13.37. C2-Board (1/2) Schematic Diagram ------------------------------------
85
13.38. C2-Board (2/2) Schematic Diagram ------------------------------------
86
13.39. C3-Board (1/2) Schematic Diagram ------------------------------------
87
13.40. C3-Board (2/2) Schematic Diagram ------------------------------------
88
13.41. C4-Board Schematic Diagram -------------------------------------------
89
13.42. C5-Board (1/2) Schematic Diagram ------------------------------------
90
13.43. C5-Board (2/2) Schematic Diagram ------------------------------------
91
13.44. C6-Board (1/2) Schematic Diagram ------------------------------------
92
13.45. C6-Board (2/2) Schematic Diagram ------------------------------------
93
13.46. SC-Board (1/4) Schematic Diagram -----------------------------------
94
13.47. SC-Board (2/4) Schematic Diagram -----------------------------------
95
13.48. SC-Board (3/4) Schematic Diagram -----------------------------------
96
13.49. SC-Board (4/4) Schematic Diagram -----------------------------------
97
13.50. SS-Board (1/2) Schematic Diagram------------------------------------
98
13.51. SS-Board (2/2), SS2-Board and SS3-Board Schematic
Diagram -----------------------------------------------------------------------
99
14 Printed Circuit Board -------------------------------------------------------------
100
14.1. P(MAIN)-Board ------------------------------------------------------------
100
14.2. P(SUB)-Board--------------------------------------------------------------
103
14.3. K and V-Board -------------------------------------------------------------
105
14.4. A-Board----------------------------------------------------------------------
106
14.5. D-Board----------------------------------------------------------------------
108
14.6. C1-Board --------------------------------------------------------------------
110
14.7. C2-Board --------------------------------------------------------------------
111
14.8. C3-Board --------------------------------------------------------------------
112
14.9. C4-Board --------------------------------------------------------------------
113
14.10. C5-Board --------------------------------------------------------------------
114
14.11. C6-Board --------------------------------------------------------------------
115
14.12. SC-Board--------------------------------------------------------------------
116
14.13. SS-Board--------------------------------------------------------------------
118
14.14. SS2 and SS3-Board------------------------------------------------------
120
15 Exploded View and Replacement Parts List ------------------------------
121
15.1. Exploded View and Mechanical Replacement Parts List -------
121
15.2. Electrical Replacement Parts List-------------------------------------
129
3
1 Safety Precautions
1.1.
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
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 Fasten connectors but plug them straight in or unplug them straight
out.
4. When servicing, observe the original lead dress. If a short circuit is found, replace all parts which have been overheated or
damaged by the short circuit.
5. After servicing, see to it that all the protective devices such as insulation barriers, insulation papers shields are properly
installed.
6. After servicing, make the following leakage current checks to prevent the customer from being exposed to shock hazards.
1.2.
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
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 (TOUCH 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 (TOUCH 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
4
2 Warning
2.1.
Prevention of Electrostatic Discharge (ESD) to Electrostatically
Sensitive (ES) Devices
Sensitive (ES) Devices
Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called Elec-
trostatically 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).
trostatically 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 alumi-
num 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 compara-
ble conductive material).
ble 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 brush-
ing 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).
to damage an ES device).
