Panasonic Viera TH-42PZ70B User manual

© 2007 Matsushita Electric Industrial Co., Ltd. All
rights reserved. Unauthorized copying and
distribution is a violation of law.
GPF10DE Chassis
Plasma Television
Specifications
Powe
r
Source
A
C 220-240 V, 50/60 Hz
Powe
r
Consumption
Aver
a
ge use 494 W
Standby condition 0.5 W (Wiheout DVB recording)
20 W (With DVB recording)
Displa
y
panel
Aspect Ratio 16 : 9
V
isible screen size 106 cm (diagonal)
922 mm (W) × 518 mm (H)
Numbe
r
o
f
pixels 2,073,600 (1,920 (W) × 1,080 (H)) [5,760 × 1,080 dots]
Sound
Speake
r
160 mm × 42 mm × 2 pcs
Audio Output 20 W (10 W + 10 W), 10 % THD
Headphones M3 (3.5 mm) stereo mini Jack × 1
PC signals VGA, SVGA, XGA
SXGA ...... (compressed)
Horizontal scanning frequenc
y
31 - 69 kHz
Vertical scanning frequenc
y
59 - 86 Hz
Receiving Systems
/
Band name PAL B, G, H, I, SEC
A
M B, G, SEC
A
ML
/
L’
(Except B model) VHF E2 - E12 VHF H1 - H2 (ITALY)
VHF A - H (ITALY) UHF E21 - E69
CATV (S01 - S05) CATV S1 - S10 (M1 - M10)
CATV S11 - S20 (U1 - U10) CATV S21 - S41 (Hyperband)
PAL D, K, SEC
A
MD,
K
VHF R1 - R2 VHF R3 - R5
VHF R6 - R12 UHF E21 - E69
PAL 525/60
Playback of NTSC tape from some PAL Video re cord ers (VCR)
ORDER NO. PCZ0707071CE

1 Applicable signals 5
2 Safety Precautions 6
2.1. General Guidelines 6
2.2. Touch-Current Check 6
3 Prevention of Electrostatic Discharge (ESD) to
Electrostatically Sensitive (ES) Devices 7
DVB (E model only)
Digital terrestrial services via VHF
/
UHF aerial input.
M.NTSC
Playback from M. NTSC Video recorders (VCR)
NTSC (A
V
input only)
Playback from NTSC Video recorders (VCR)
lTV signals ma
y
not be received in some areas.
Receiving Systems
/
Band name PAL I :UHF E21 - 68
(B model) PAL 525/60 :Playback of NTSC tape from some PAL Video recorders (VCR) o
r
NTSC disc playback from DVD playe
r
and recorder.
DVB :Digital terrestrial services via UHF aerial input.
M.NTSC :Playback from M.NTSC Video recorders (VCR).
NTSC (A
V
input only) :Playback from NTSC Video recorders (VCR).
Aerial - Rea
r
VHF/UHF (Except B model), UHF (B model)
Operating Conditions Temperatu
r
e: 0 °C - 35 °C
Humidity: 20 % - 80 % RH (non-condensing)
Connection Terminals
AV1 (Sca
r
t terminal) 21 Pin terminal (Audio
/
Video in, Audio
/
Video out, S-Video in, Q-Link)
AV2 (Sca
r
t terminal) 21 Pin terminal (Audio
/
Video in, Audio
/
Video out, RGB in, S-Video in, Q-Link)
AV3
VIDEO RCA PIN Type × 1 1.0 V[p-p] (75 ohm)
S-VIDEO Mini DIN 4-pin Y:1.0 V[p-p] (75 ohm) C:0.286 V[p-p] (75 ohm)
A
UDIO L - R RCA PIN Type × 2 0.5 V[rms]
COMPONENT
V
IDEO
VIDEO
Y
1.0 V[p-p] (including synchronization)
PB,P
R± 0.35 V [p-p]
A
UDIO L - R RCA PIN Type × 2 0.5 V[rms]
Others
HDMI1 / 2 TYPE A Connectors lThis TV supports “HDAVI Cont
r
ol 2” function.
PC HIGH-DENSITY D-SUB 15PIN R,G,B
/
0.7 V[p-p] (75 ohm)
HD, VD/TTL Level 2.0 - 5.0 V[p-p] (high impedance)
Card slot SD CARD slot × 1
Output
A
UDIO L - R RCA PIN Type × 2 0.5 V[rms] (high impedance)
Dimensions ( W × H × D ) 1,134 mm × 688 mm × 330 mm (With Pedestal)
1,134 mm × 641 mm × 116 mm (TV only)
Mass 42.0 kg Net (With Pedestal)
35.0 kg Net (TV only)
Note:
·
· ·
· Design and Specifications are subject to change without notice. Mass and Dimensions shown are approximate.
·
· ·
· This equipment complies with the EMC standards listed below.
EN55013, EN61000-3-2, EN61000-3-3, EN55020, EN55022, EN55024.
CONTENTS
Page Page
2
TH-42PZ70B / TH-42PZ70E / TH-42PY70F / TH-42PY70P

4 About lead free solder (PbF) 8
5 Service Hint 9
6 Plasma panel replacement method 10
6.1. Remove the Back cover 10
6.2. Remove the fan assy A/B 10
6.3. Remove the fan assy C 10
6.4. Remove the rear terminal cover 10
6.5. Remove the tuner unit 10
6.6. Remove the P-Board 11
6.7. Remove the DH-Board 12
6.8. Remove the DG-Board 12
6.9. Remove the PA-Board 12
6.10. Remove the D-Board 13
6.11. Remove the side AV unit and the side AV bracket. 13
6.12. Remove the G-Board and GS-Board 13
6.13. Remove the SU-Board 14
6.14. Remove the SD-Board 14
6.15. Remove the SC-Board 14
6.16. Remove the SS-Board 15
6.17. Remove the C1-Board 15
6.18. Remove the C2-Board 15
6.19. Remove the stand brackets 16
6.20. Remove the C3-Board 16
6.21. Remove the C4-Board 16
6.22. Remove the speaker L, R 17
6.23. Remove the Plasma panel section from the Cabinet assy
(glass) 17
6.24. Remove the K-Board and the S-Board 17
6.25. Replace the plasma panel (finished) 18
7 Caution statement 19
7.1. Caution statement. 19
8 Location of Lead Wiring 20
8.1. Lead of Wiring (1) 20
8.2. Lead of Wiring (2) 21
8.3. Lead of Wiring (3) 22
8.4. Lead of Wiring (4) 23
9 Self-check Function 24
9.1. Check of the IIC bus lines 24
9.2. Power LED Blinking timing chart 25
9.3. No Power 26
9.4. No Picture 27
9.5. Local screen failure 28
10 Service Mode 29
10.1. How to enter into Service Mode 29
10.2. Service tool mode 31
11 Adjustment Procedure 32
11.1. Driver Set-up 32
11.2. Initialization Pulse Adjust 33
11.3. P.C.B. (Printed Circuit Board) exchange 33
11.4. Adjustment Volume Location 34
11.5. Test Point Location 34
12 Adjustment 35
12.1. Sub-Contrast adjustment 35
12.2. PAL panel white balance adjustment 36
12.3. HD white balance adjustment 37
13 Hotel mode 38
14 Conductor Views 39
14.1. P-Board 39
14.2. PA-Board 42
14.3. G and GS-Board 43
14.4. DG-Board 44
14.5. DH-Board 47
14.6. D-Board 48
14.7. C1-Board 51
14.8. C2-Board 52
14.9. C3-Board 53
14.10. C4-Board 54
14.11. SC-Board 55
14.12. SU-Board 58
14.13. SD-Board 59
14.14. SS-Board 60
14.15. K and S-Board 63
15 Schematic and Block Diagram 65
15.1. Schematic Diagram Note 65
15.2. Main Block Diagram 66
15.3. P-Board Block Diagram 67
15.4. P-Board (1 of 2) Schematic Diagram 68
15.5. P-Board (2 of 2) Schematic Diagram 69
15.6. PA-Board Block Diagram 70
15.7. PA-Board (1 of 2) Schematic Diagram 71
15.8. PA-Board (2 of 2) Schematic Diagram 72
15.9. G, K and S-Board Schematic Diagram 73
15.10. GS-Board Block and Schematic Diagram 74
15.11. DG-Board (1 of 5) Block Diagram 75
15.12. DG-Board (2 of 5) Block Diagram 76
15.13. DG-Board (3 of 5) Block Diagram 77
15.14. DG-Board (4 of 5) Block Diagram 78
15.15. DG-Board (5 of 5) Block Diagram 79
15.16. DG-Board (1 of 16) Schematic Diagram 80
15.17. DG-Board (2 of 16) Schematic Diagram 81
15.18. DG-Board (3 of 16) Schematic Diagram 82
15.19. DG-Board (4 of 16) Schematic Diagram 83
15.20. DG-Board (5 of 16) Schematic Diagram 84
15.21. DG-Board (6 of 16) Schematic Diagram 85
15.22. DG-Board (7 of 16) Schematic Diagram 86
15.23. DG-Board (8 of 16) Schematic Diagram 87
15.24. DG-Board (9 of 16) Schematic Diagram 88
15.25. DG-Board (10 of 16) Schematic Diagram 89
15.26. DG-Board (11 of 16) Schematic Diagram 90
15.27. DG-Board (12 of 16) Schematic Diagram 91
15.28. DG-Board (13 of 16) Schematic Diagram 92
15.29. DG-Board (14 of 16) Schematic Diagram 93
15.30. DG-Board (15 of 16) Schematic Diagram 94
15.31. DG-Board (16 of 16) Schematic Diagram 95
15.32. DH-Board Block Diagram 96
15.33. DH-Board (1 of 4) Schematic Diagram 97
15.34. DH-Board (2 of 4) Schematic Diagram 98
15.35. DH-Board (3 of 4) Schematic Diagram 99
3
TH-42PZ70B / TH-42PZ70E / TH-42PY70F / TH-42PY70P

15.36. DH-Board (4 of 4) Schematic Diagram 100
15.37. D-Board (1 of 2) Block Diagram 101
15.38. D-Board (2 of 2) Block Diagram 102
15.39. D-Board (1 of 8) Schematic Diagram 103
15.40. D-Board (2 of 8) Schematic Diagram 104
15.41. D-Board (3 of 8) Schematic Diagram 105
15.42. D-Board (4 of 8) Schematic Diagram 106
15.43. D-Board (5 of 8) Schematic Diagram 107
15.44. D-Board (6 of 8) Schematic Diagram 108
15.45. D-Board (7 of 8) Schematic Diagram 109
15.46. D-Board (8 of 8) Schematic Diagram 110
15.47. C1 and C4 Block Diagram 111
15.48. C2 and C3-Board Block Diagram 113
15.49. C1-Board (1 of 3) Schematic Diagram 114
15.50. C1-Board (2 of 3) Schematic Diagram 115
15.51. C1-Board (3 of 3) Schematic Diagram 116
15.52. C2-Board (1 of 3) Schematic Diagram 117
15.53. C2-Board (2 of 3) Schematic Diagram 118
15.54. C2-Board (3 of 3) Schematic Diagram 119
15.55. C3-Board (1 of 3) Schematic Diagram 120
15.56. C3-Board (2 of 3) Schematic Diagram 121
15.57. C3-Board (3 of 3) Schematic Diagram 122
15.58. C4-Board (1 of 3) Schematic Diagram 123
15.59. C4-Board (2 of 3) Schematic Diagram 124
15.60. C4-Board (3 of 3) Schematic Diagram 125
15.61. SC-Board (1 of 2) Block Diagram 126
15.62. SC-Board (2 of 2) Block Diagram 127
15.63. SC-Board (1 of 5) Schematic Diagram 128
15.64. SC-Board (2 of 5) Schematic Diagram 129
15.65. SC-Board (3 of 5) Schematic Diagram 130
15.66. SC-Board (4 of 5) Schematic Diagram 131
15.67. SC-Board (5 of 5) Schematic Diagram 132
15.68. SU and SD-Board Block Diagram 133
15.69. SU-Board (1 of 2) Schematic Diagram 134
15.70. SU-Board (2 of 2) Schematic Diagram 135
15.71. SD-Board (1 of 2) Schematic Diagram 136
15.72. SD-Board (2 of 2) Schematic Diagram 137
15.73. SS-Board Block Diagram 138
15.74. SS-Board (1 of 2) Schematic Diagram 139
15.75. SS-Board (2 of 2) Schematic Diagram 140
16 Exploded Views & Replacement Parts List 141
16.1. Exploded Views 141
16.2. Fan Exploded Views 142
16.3. Packing Exploded Views (1) 143
16.4. Packing Exploded Views (2) 144
16.5. Stand Packing Exploded Views 145
16.6. Replacement Parts List Notes 146
16.7. Mechanical Replacement Parts List 147
16.8. Electrical Replacement Parts List 149
4
TH-42PZ70B / TH-42PZ70E / TH-42PY70F / TH-42PY70P

1 Applicable signals
5
TH-42PZ70B / TH-42PZ70E / TH-42PY70F / TH-42PY70P

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
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
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 U1and U2, does not exceed the following values:
For a. c.: U1= 35 V (peak) and U2= 0.35 V (peak);
For d. c.: U1= 1.0 V,
Note:
The limit value of U2= 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 U1= 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
6
TH-42PZ70B / TH-42PZ70E / TH-42PY70F / TH-42PY70P

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 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).
7
TH-42PZ70B / TH-42PZ70E / TH-42PY70F / TH-42PY70P

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.
8
TH-42PZ70B / TH-42PZ70E / TH-42PY70F / TH-42PY70P

Remove the Rear Cover
5 Service Hint
Board Name Function Board Name Function
P Power Supply D Format Converter, Plasma AI, Sub-Field Processor
PA Fan control, DC-DC converter C1 Data Driver (Upper Right)
DG Speaker out, Sound Processor
AV Terminal, AV Switch
DC-DC Converter
Digital Signal Processor, Microcomputer
HDMI Interface, Peaks Lite 2
C2 Data Driver (Upper Left)
C3 Data Driver (Lower Left)
C4 Data Driver (Lower Right)
SC Scan Drive
SU Scan out (Upper)
DH Full HD SD Scan out (Lower)
G Side terminal, Key Switch SS Sustain Drive
K Remote receiver, Power LED
S Power Switch
GS SD Card Slot
9
TH-42PZ70B / TH-42PZ70E / TH-42PY70F / TH-42PY70P

6.1. Remove the Back cover
1.See Service Hint. (Section 5)
6.2. Remove the fan assy A/B
1.Unlock the cable clampers to free the cable.
2.Disconnect the relay connectors.
3.Remove the screws (×3 each) and remove the fan assy
A/B.
6.3. Remove the fan assy C
1.Unlock the cable clampers to free the cable.
2.Disconnect the relay connectors.
3.Remove the screws (×4 ) and remove the fan assy C.
6.4. Remove the rear terminal
cover
1.Remove the screws (×5 ,×8 ,×2 ,×3 ).
2.Remove the rear terminal cover.
6.5. Remove the tuner unit
1.Remove the screws (×3 ) and remove the spacer metal.
2.Unlock the cable clampers to free the cable.
3.Disconnect the connectors (DG1, DG3, DG35, DG52, DH5,
DG12 and DG51).
4.Remove the screws (×4 ) and remove the tuner unit.
6 Plasma panel replacement method
10
TH-42PZ70B / TH-42PZ70E / TH-42PY70F / TH-42PY70P

6.6. 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, P5, P9, P10, P11, P12 and
P25).
3.Remove the screws (×6 ) and remove the P-Board unit.
4.Remove the screws (×16 ) on the back side.
5.Remove the screws (×6 ).
6.Remove the molding props (×11 ).
7.Remove the P-Board.
Note:
When assembling the P-Board, the position of each hole of
the insulation sheets(A, B) is set to the position of each hole
of the P-Board and then assemble them. ( marks
indicate setting positions.)
11
TH-42PZ70B / TH-42PZ70E / TH-42PY70F / TH-42PY70P

6.7. Remove the DH-Board
1.Remove the tuner unit. (See section 6.5.)
2.Remove the screws (×4 ) and remove the DH-Board
cover and DH-Board.
(Be careful the connector (DH25-DG25) when remove the
DH-Board.)
3.Remove the screw (×1 ) and remove the DH-Board from
DH-Board cover.
4.Remove the screws (×2 ) and remove the DH-Board
frame.
6.8. Remove the DG-Board
1.Remove the tuner unit. (See section 6.5.)
2.Remove the DH-Board and the DH-Board frame. (See
section 6.7.)
3.Remove the screws (×1 ,×1 ) and remove the tuner
fixing metal.
4.Remove the screws (×5 ) and remove the DG-Board.
6.9. Remove the PA-Board
1.Unlock the cable clampers to free the cable.
2.Disconnect the connectors (PA3, PA5, PA10, PA32, PA34,
PA36 and PA38).
3.Remove the screws (×4 ) and remove the PB-Board.
12
TH-42PZ70B / TH-42PZ70E / TH-42PY70F / TH-42PY70P

6.10. Remove the D-Board
1.Disconnect the connectors (D3, D5, D20 and D25).
2.Disconnect the flexible cables (D31, D32, D33, D34, D35
and D36).
3.Remove the screws (×4 ) and remove the D-Board.
6.11. Remove the side AV unit and
the side AV bracket.
1.Unlock the cable clampers to free the cable.
2.Disconnect the connectors (G51, G52 and GS52) and relay
connector.
3.Remove the screws (×3 ,×1 ).
4.Remove the side AV unit.
5.Remove the screw (×1 ).
6.Remove the tabs (×4 ) and Remove the side AV bracket.
6.12. Remove the G-Board and GS-
Board
1.Remove the side AV unit and the side AV bracket. (See
section 6.6.)
2.Remove the screws (×2 ).
3.Remove the screws (×6 ) and remove the side AV unit
shield cover and the control button.
13
TH-42PZ70B / TH-42PZ70E / TH-42PY70F / TH-42PY70P

4.Remove the screws (×5 ) and remove the G-Board and
GS-Board.
6.13. Remove the SU-Board
1.Remove the screws (×2 ).
2.Remove the flexible cables (SUI1, SUI2, SUI3, SUI4 and
SU47) connected to the SU-Board and remove the
connectors (SC45-SU45).
3.Slide the SU-Board to the left to disconnect from
connectors (SC41-SU41 and SC42-SU42) on the SC-Board
and remove the SU-Board.
6.14. Remove the SD-Board
1.Remove the screws (×3 ).
2.Remove the flexible cables (SDI1, SDI2, SDI3, SDI4 and
SD48) connected to the SD-Board and remove the
connector (SC46-SD46).
3.Slide the SD-Board to the left to disconnect from
connectors (SC43-SD43 and SC44-SD44) on the SC-Board
and remove the SD-Board.
6.15. Remove the SC-Board
1.Unlock the cable clampers to free the cable.
2.Remove the SU-Board and SD-Board. (See section 6.13.
and 6.14.)
3.Unlock the cable clampers to free the cable.
4.Disconnect the connectors (SC2 and SC20).
5.Remove the screws (×8 ) and remove the SC-Board.
14
TH-42PZ70B / TH-42PZ70E / TH-42PY70F / TH-42PY70P

6.16. Remove the SS-Board
1.Disconnect the connectors (SS11, SS12, SS23, SS33,
SS34 and SS35).
2.Disconnect the flexible cables (SS52, SS53, SS54, SS55,
SS56 and SS57).
3.Remove the screws (×6 ) and remove the SS-Board.
6.17. Remove the C1-Board
1.Remove the fan assy C. (See section 6.3.)
2.Remove the screws (×7 ) and mounting metal B/C.
3.Remove the flexible cables holder fastening screws (×16
).
4.Disconnect the flexible cables (CA1, CA2, CA3, CA4, CA5,
CA6, CA7 and CA8).
5.Disconnect the flexible cables (C10, C11 and C12).
6.Remove the screws (×5 ) and remove the C1-Board.
6.18. Remove the C2-Board
1.Remove the fan assy A/B/C. (See section 6.2. and 6.3.)
2.Remove the mounting metal C. (See section 6.17.)
3.Remove the screws (×3 ) and remove the mounting
metal B.
4.Remove the flexible cables holder fastening screws (×14
).
5.Disconnect the flexible cables (CA9, CA10, CA11, CA12,
CA13, CA14 and CA15).
6.Disconnect the flexible cables (C20 and C22).
15
TH-42PZ70B / TH-42PZ70E / TH-42PY70F / TH-42PY70P

7.Disconnect the connector. (C23)
8.Remove the screws (×5 ) and remove the C2-Board.
6.19. Remove the stand brackets
1.Remove the plasma panel section from the servicing stand
and lay on a flat surface such as a table (covered) with the
plasma panel surface facing downward.
2.Remove the stand brackets (left, right) fastening screws (×3
,×1 each) and remove the stand brackets (left,
right).
6.20. Remove the C3-Board
1.Remove the stand bracket left. (See section 6.19.)
2.Remove the screws (×2 ) and remove the mounting
metal D.
3.Remove the flexible cables holder fastening screws (×14
).
4.Disconnect the flexible cables (CB9, CB10, CB11, CB12,
CB13, CB14 and CB15).
5.Disconnect the flexible cable (C30 and C32).
6.Disconnect the connectors (C33 and C35).
7.Remove the screws (×5 ) and remove the C3-Board.
6.21. Remove the C4-Board
1.Remove the stand bracket right. (See section 6.19.)
2.Remove the screws (×2 ) and remove the mounting
metal D.
16
TH-42PZ70B / TH-42PZ70E / TH-42PY70F / TH-42PY70P

3.Remove the flexible cables holder fastening screws (×16
).
4.Disconnect the flexible cables (CB1, CB2, CB3, CB4, CB5,
CB6, CB7 and CB8).
5.Disconnect the flexible cables (C40, C41 and C42).
6.Remove the screws (×5 ) and remove the C4-Board.
6.22. Remove the speaker L, R
1.Disconnect the relay connector .
2.Remove the screws (×4 each) and remove the speaker
holder.
3.Remove the speaker L, R.
6.23. Remove the Plasma panel
section from the Cabinet assy
(glass)
1.Remove the stand brackets (left, right) fastening screw (×1
each).
2.Remove the cabinet assy and the plasma panel fastening
screws (×11 ).
3.For leaving the plasma panel from the cabinet assy, pull the
bottom of the front frame forward, lift, and remove.
6.24. Remove the K-Board and the
S-Board
1.Remove the cabinet assy. (See section 6.23.)
2.Remove the screws (×13 ) and remove the glass holder
bottom.
3.Unlock the cable clampers to free the cable.
4. Remove the screws (×2 ) and remove the front P.C.B.
metal.
17
TH-42PZ70B / TH-42PZ70E / TH-42PY70F / TH-42PY70P

5.Remove the screws (×2 ).
6.Disconnect the connector (S1) and Remove the S-Board.
7.Remove the screws (×2 ).
8.Disconnect the connectors (K1) and remove the K-Board.
6.25. 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, C2, C3-Board and the C4-Board, connect
the flexible cables (×30) from the Plasma panel to the C1,
C2, C3-Board and the C4-Board, and fit the flexible cable
holders.
3.Attach the Hooks (left, right) and fit the Reinforcement
Angles (L, R) and the Connection Plate (A, B, C, D) 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.
18
TH-42PZ70B / TH-42PZ70E / TH-42PY70F / TH-42PY70P

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.
19
TH-42PZ70B / TH-42PZ70E / TH-42PY70F / TH-42PY70P

8 Location of Lead Wiring
8.1. Lead of Wiring (1)
20
TH-42PZ70B / TH-42PZ70E / TH-42PY70F / TH-42PY70P