Panasonic GPH8D, TH-37PHD8GK, TH-37PHD8GS, TH-37PHD8UK, TH-42PHD8GK Service Manual
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ORDER NO. ITD0508042CE
D10 Canada: B07
High Definition Plasma Display
TH-37PHD8GK
TH-37PHD8GS
TH-37PHD8UK
TH-42PHD8GK
TH-42PHD8GS
TH-42PHD8UK
GPH8D Chassis
Specifications
Power Source 120 VAC, 50/60Hz
Power Consumption
Maximum 282 W (37 inch) 337 W (42 inch)
Stand-bycondition Save OFF 1.0 W, Save ON 0.7 W (37 inch) Save OFF 0.6 W, Save ON 0.4 W (42 inch)
Power off condition 0.05 W (37 inch) 0.1 W (42 inch)
Plasma Displaypanel Drive method:AC type 37-inch, Drive method:AC type 42-inch,
16:9 aspect ratio (37 inch) 16:9 aspect ratio (42 inch)
Contrast Ratio 3000:1
Screen size 32.2” (818 mm) (W) × 18.1” (461 mm) (H) × 37” (939 mm) (diagonal) (37 inch)
36.2” (920 mm) (W) × 20.4” (518 mm) (H) × 42” (1,056 mm) (diagonal) (42 inch)
(No. of pixels) 737,280 (1,024 (W) × 720 (H)) (37 inch) 786,432 (1,024 (W) × 768 (H)) (42 inch)
[3,072 × 720 dots] [3,072 × 768 dots]
Operating condition
Temperature 32 °F - 104 °F (0 °C - 40 °C)
Humidit
Applicablesignals
Color System NTSC, PAL, PAL60, SECAM, Modified NTSC
Scanning format 525 (480) / 60i 60p, 625 (575)/50i 50p, 750 (720)/60p 50p, 1125 (1080) / 60i 50i 24p 25p
PC signals VGA, SVG
20 % - 80 %
30p 24sF .... SMPTE274M, 1250 (1080) / 50i
VGA, SVGA, XG
XGA, SXGA, UXGA..... (compressed) SXGA, UXGA..... (compressed)
(37 inch) (42 inch)
Horizontal scanning frequency 15 - 110 kHz
Vertical scanning frequency 48 - 120 Hz
0.7 Vp-p (75-ohm)
© 2005 Matsushita Electric Industrial Co., Ltd. All
rights reserved. Unauthorized copying and
distribution is a violation of law.
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TH-37PHD8GK / TH-37PHD8GS / TH-37PHD8UK / TH-42PHD8GK / TH-42PHD8GS / TH-42PHD8UK
Connection terminals
V (UK) VIDEO IN / OUT (BNC) 1.0 Vp-p (75-ohm or high impedance)
S VIDEO IN (MINI DIN 4PIN) Y: 1 Vp-p (75-ohm), C: 0.286 Vp-p (75-ohm)
UDIO IN (RCA PIN JACK × 2) 0.5 Vrms (high impedance)
COMPONENT / RGB (UK)
PC (HIGH-DENSITYMini-D-SUB 15PIN) R,G,B/0.7 Vp-p (75-ohm)
SERIAL EXTERNAL CONTROL TERMINAL (D-SUB 9PIN) RS-232C COMPATIBLE
SPEAKERS (6Ω) 16 W [8 W + 8 W] (10 % THD)
Accessories Supplied
Remote Control Transmitter EUR7636070R
Batteries 2×AASize
Fixing bands (TMME203 or TMME187) × 2
Dimensions (W×H×D) 36.2” (920 mm) × 21.7” (550 mm) × 3.5” (89 mm) 40.2” (1,020 mm) × 24” (610 mm) × 3.5” (89 mm)
Mass (weight) (UK)
main unit onl
with speakers approx. 66.1 lbs (37 inch) approx. 78.3 lbs (42 inch)
Mass (weight) (GK/GS)
main unit onl
with speakers approx. 65.0 lbs (37 inch) approx. 77.2 lbs (42 inch)
/ G (BNC) 1.0 Vp-p/composite (75-ohm)
0.7 Vp-p/non-composite (75-ohm)
PB/B (BNC), PR/R (BNC) 0.7 Vp-p (75-ohm)
UDIO IN (RCA PIN JACK × 2) 0.5 Vrms (high impedance)
Component
:1.0 Vp-p (75-ohm : include sync)
P
CB:0.7 Vp-p (75-ohm)
B
P
CR:0.7 Vp-p (75-ohm)
R
HD, VD/1.0 - 5.0 Vp-p (high impedance)
UDIO IN (M3 JACK) 0.5 Vrms (high impedance)
(exclusive of protruding portion) (37 inch) (exclusive of protruding portion) (42 inch)
approx. 57.3 lbs (37 inch) approx. 69.4 lbs (42 inch)
approx. 56.2 lbs (37 inch) approx. 68.3 lbs (42 inch)
Notes:
· Design and specifications are subject to change without notice. Mass and dimensions shown are approximate.
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 PCB Structure sheet of GPH8D chassis
6 Service Hint
7 Disassembly TH-37PHD8
7.1. Removal of the Back Cover
7.2. Removal of the HA-Board and the HB-Board
7.3. Removal of the Slot Block
7.4. Removal of the J-Board
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7.5. Removal of the HX-Board
7.6. Removal of the PB-Board
7.7. Removal of the D-Board
7.8. Removal of the P-Board
7.9. Removal of the H3-Board(L, R)
7.10. Removal of the SU-Board and the SD-Board
7.11. Removal of the SC-Board
7.12. Removal of the SS-Board
7.13. Removal of the C1, C2, C3 and the C4-Board
7.14. Removal of the S1-Board
7.15. Removal of the Fan
7.16. Removal of the Escutcheon
7.17. Removal of the V1-Board and the V2-Board
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7.18. Removal of the Plasma Panel 19
8 Disassembly TH-42PHD8
8.1. Removal of the Back Cover
8.2. Removal of the HA-Board and the HB-Board
8.3. Removal of the Slot Block
8.4. Removal of the J-Board
8.5. Removal of the HX-Board
8.6. Removal of the PB-Board
8.7. Removal of the D-Board
8.8. Removal of the P-Board
8.9. Removal of the H3-Board(L, R)
8.10. Removal of the SU-Board and the SD-Board
8.11. Removal of the SC-Board
8.12. Removal of the SS2-Board and the SS3-Board
8.13. Removal of the SS-Board
8.14. Removal of the C1, C2, C3 and the C4-Board
8.15. Removal of the S1-Board
8.16. Removal of the Fan
8.17. Removal of the Escutcheon
8.18. Removal of the V1-Board and the V2-Board
8.19. Removal of the Plasma Panel
9 Location of Lead Wiring
9.1. Wiring for 37 inch model
9.2. Wiring for 42 inch model
10 Adjustment Procedure
10.1. Driver Set-up
10.2. Initialization Pulse Adjust
10.3. P.C.B. (Printed Circuit Board) exchange
10.4. Adjustment Volume Location
10.5. Test Point Location
11 Service mode
11.1. CAT (computer Aided Test) mode
11.2. IIC mode structure (following items value is sample data.)
12 Alignment
12.1. PC / RGB panel white balance
12.2. HD / 525ip / 625ip panel white balance
13 Trouble shooting guide
13.1. Self Check
13.2. No Power
13.3. No Picture
13.4. Local screen failure
14 Option Setting
15 Circuit Board Layout
15.1. P-Board (37inch)
15.2. P-Board (42inch)
15.3. PB-Board
15.4. HA-Board
15.5. HB-Board
15.6. HX-Board (37inch)
15.7. HX-Board (42inch)
15.8. J-Board (37inch)
15.9. J-Board (42inch)
15.10. D-Board
TH-37PHD8GK / TH-37PHD8GS / TH-37PHD8UK / TH-42PHD8GK / TH-42PHD8GS / TH-42PHD8UK
15.11. C1-Board (37inch)
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15.12. C1-Board (42inch)
15.13. C2-Board (37inch)
15.14. C2-Board (42inch)
15.15. C3-Board (37inch)
15.16. C3-Board (42inch)
15.17. C4-Board (37inch)
15.18. C4-Board (42inch)
15.19. SC-Board (37inch)
15.20. SC-Board (42inch)
15.21. SU-Board (37inch)
15.22. SU-Board (42inch)
15.23. SD-Board (37inch)
15.24. SD-Board (42inch)
15.25. SS-Board (37inch)
15.26. SS, SS2 and SS3-Board (42inch)
15.27. H3, S1, V1 and V2-Board
16 Block and Schematic Diagram
16.1. Schematic Diagram Notes
16.2. Main Block Diagram (37inch)
16.3. Main Block Diagram (42inch)
16.4. P-Board Block Diagram (37inch)
16.5. P-Board (1 of 6) Schematic Diagram (37inch)
16.6. P-Board (2 of 6) Schematic Diagram (37inch)
16.7. P-Board (3 of 6) Schematic Diagram (37inch)
16.8. P-Board (4 of 6) Schematic Diagram (37inch)
16.9. P-Board (5 of 6) Schematic Diagram (37inch)
16.10. P-Board (6 of 6) Schematic Diagram (37inch)
16.11. P-Board Block Diagram (42inch)
16.12. P-Board (1 of 2) Schematic Diagram (42inch)
16.13. P-Board (2 of 2) Schematic Diagram (42inch)
16.14. PB-Board Block and Schematic Diagram
16.15. HA-Board Block and Schematic Diagram
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16.16. HB-Board Block Diagram
16.17. HB-Board (1 of 2) Schematic Diagram
16.18. HB-Board (2 of 2) Schematic Diagram
16.19. HX-Board Block and Schematic Diagram
16.20. J-Board (1 of 2) and H3-Board Block Diagram
16.21. J-Board (2 of 2) Block Diagram
16.22. J-Board (1 of 4) and H3-Board Schematic Diagram
(37inch)
16.23. J-Board (2 of 4) Schematic Diagram (37inch)
16.24. J-Board (3 of 4) Schematic Diagram (37inch)
16.25. J-Board (4 of 4) Schematic Diagram (37inch)
16.26. J-Board (1 of 4) and H3-Board Schematic Diagram
(42inch)
16.27. J-Board (2 of 4) Schematic Diagram (42inch)
16.28. J-Board (3 of 4) Schematic Diagram (42inch)
16.29. J-Board (4 of 4) Schematic Diagram (42inch)
16.30. D-Board (1 of 2) Block Diagram
16.31. D-Board (2 of 2) Block Diagram
16.32. D-Board (1 of 12) Schematic Diagram
16.33. D-Board (2 of 12) Schematic Diagram
16.34. D-Board (3 of 12) Schematic Diagram
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TH-37PHD8GK / TH-37PHD8GS / TH-37PHD8UK / TH-42PHD8GK / TH-42PHD8GS / TH-42PHD8UK
16.35. D-Board (4 of 12) Schematic Diagram 129
16.36. D-Board (5 of 12) Schematic Diagram
16.37. D-Board (6 of 12) Schematic Diagram
16.38. D-Board (7 of 12) Schematic Diagram
16.39. D-Board (8 of 12) Schematic Diagram
16.40. D-Board (9 of 12) Schematic Diagram
16.41. D-Board (10 of 12) Schematic Diagram
16.42. D-Board (11 of 12) Schematic Diagram
16.43. D-Board (12 of 12) Schematic Diagram
16.44. C1, C2, C3 and C4-Board Block Diagram
16.45. C1-Board (1 of 2) Schematic Diagram (37inch)
16.46. C1-Board (2 of 2) Schematic Diagram (37inch)
16.47. C1-Board (1 of 2) Schematic Diagram (42inch)
16.48. C1-Board (2 of 2) Schematic Diagram (42inch)
16.49. C2-Board (1 of 2) Schematic Diagram (37inch)
16.50. C2-Board (2 of 2) Schematic Diagram (37inch)
16.51. C2-Board (1 of 2) Schematic Diagram (42inch)
16.52. C2-Board (2 of 2) Schematic Diagram (42inch)
16.53. C3-Board (1 of 2) Schematic Diagram (37inch)
16.54. C3-Board (2 of 2) Schematic Diagram (37inch)
16.55. C3-Board (1 of 2) Schematic Diagram (42inch)
16.56. C3-Board (2 of 2) Schematic Diagram (42inch)
16.57. C4-Board (1 of 2) Schematic Diagram (37inch)
16.58. C4-Board (2 of 2) Schematic Diagram (37inch)
16.59. C4-Board (1 of 2) Schematic Diagram (42inch)
16.60. C4-Board (2 of 2) Schematic Diagram (42inch)
16.61. SC-Board Block Diagram (37inch)
16.62. SC-Board (1 of 2) Schematic Diagram (37inch)
16.63. SC-Board (2 of 2) Schematic Diagram (37inch)
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16.64. SC-Board Block Diagram (42inch)
16.65. SC-Board (1 of 2) Schematic Diagram (42inch)
16.66. SC-Board (2 of 2) Schematic Diagram (42inch)
16.67. SU-Board Block Diagram (37inch)
16.68. SU-Board (1 of 2) Schematic Diagram (37inch)
16.69. SU-Board (2 of 2) Schematic Diagram (37inch)
16.70. SU-Board Block Diagram (42inch)
16.71. SU-Board (1 of 2) Schematic Diagram (42inch)
16.72. SU-Board (2 of 2) Schematic Diagram (42inch)
16.73. SD-Board Block Diagram (37inch)
16.74. SD-Board (1 of 2) Schematic Diagram (37inch)
16.75. SD-Board (2 of 2) Schematic Diagram (37inch)
16.76. SD-Board Block Diagram (42inch)
16.77. SD-Board (1 of 2) Schematic Diagram (42inch)
16.78. SD-Board (2 of 2) Schematic Diagram (42inch)
16.79. SS-Board Block Diagram (37inch)
16.80. SS-Board Schematic Diagram (37inch)
16.81. SS, SS2 and SS3-Board Block Diagram (42inch)
16.82. SS, SS2 and SS3-Board Schematic Diagram (42inch)
16.83. S1, V1 and V2-Board Block and Schematic Diagram
17 Parts Location
17.1. Exploded View
17.2. Cable relation
17.3. Packing summary
18 Mechanica l Replacement Parts List
19 Replacement Parts List
19.1. Relpacement Parts List Notes
19.2. Electrical Replacement Parts List (37 inch)
19.3. Electrical Replacement Parts List (42 inch)
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1 Applicable signals
TH-37PHD8GK / TH-37PHD8GS / TH-37PHD8UK / TH-42PHD8GK / TH-42PHD8GS / TH-42PHD8UK
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TH-37PHD8GK / TH-37PHD8GS / TH-37PHD8UK / TH-42PHD8GK / TH-42PHD8GS / TH-42PHD8UK
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
1MΩ and 5.2MΩ.
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 1.5kΩ, 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 AC plug in the AC outlet and repeat each 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.
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TH-37PHD8GK / TH-37PHD8GS / TH-37PHD8UK / TH-42PHD8GK / TH-42PHD8GS / TH-42PHD8UK
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, 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 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).
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TH-37PHD8GK / TH-37PHD8GS / TH-37PHD8UK / TH-42PHD8GK / TH-42PHD8GS / TH-42PHD8UK
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.
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TH-37PHD8GK / TH-37PHD8GS / TH-37PHD8UK / TH-42PHD8GK / TH-42PHD8GS / TH-42PHD8UK
5 PCB Structure sheet of GPH8D chassis
Board Name Function Remarks
D Digital Signal Processor, Format Converter,
Plasma AI Processor
J Slot Interface (Audio/Video/Sync input Switch),
SYNC processor, Audio processor,
Speaker out amplifier, DC-DC converter
SS Sustain drive 1
SC Scan drive 1
SU Scan out (Upper) 1
SD Scan out (Lower) 1
C1 Data Drive (Upper Right)
C2 Data Drive (Upper Left)
C3 Data Drive (Lower Left)
C4 Data Drive (Lower Right)
H3 Speaker terminal
S1 Power switch
SS2 Sustain out (Upper) 2
SS3 Sustain out (Lower) 2
V1 LED (stand-by / Power on) & Remote receiver 1
V2 Key switch 1
PB Fan control 1
P Line filter, Power supply 1
HX PC / RS-232C_Input terminal
HB BNC Composite Video 3
HA BNC Component Video 3
1
1
Remarks
1: Recommend PCB´s for initial service for GPH8D chassis.
2: For TH-42PHD8GK/GS/UK
3: For TH-37/42PHD8UK
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TH-37PHD8GK / TH-37PHD8GS / TH-37PHD8UK / TH-42PHD8GK / TH-42PHD8GS / TH-42PHD8UK
6 Service Hint
Note:
· Extension cable kit Slot Board is supplied as service fixtures and tools.
(Parts No. TZSC07040)
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TH-37PHD8GK / TH-37PHD8GS / TH-37PHD8UK / TH-42PHD8GK / TH-42PHD8GS / TH-42PHD8UK
Note:
· Extension cable kit Slot Board is supplied as service fixtures and tools.
(Parts No. TZSC0704)
11
TH-37PHD8GK / TH-37PHD8GS / TH-37PHD8UK / TH-42PHD8GK / TH-42PHD8GS / TH-42PHD8UK
7 Disassembly TH-37PHD8
· To disassemble P.C.B. , wait for 1 minute after power was
off for discharge from electrolysis capacitors.
and marks indicate screw positions.
·
7.1. Removal of the Back Cover
1. Remove the screws (×12 ,×4 ,×5 ,×4 ) and then
remove the Back Cover.
· Removal of the HA-Board
1. Remove the 4 screws(D) and then remove the HA Terminal
Block.
2. Remove the 4 screws(E).
3. Remove the 2 screws(F) and then remove the HA-Board.
7.3. Removal of the Slot Block
7.2. Removal of the HA-Board and
the HB-Board
7.2.1. TH-37PHD8UK
· Removal of the HB-Board
1. Remove the 4 screws(A) and then remove the HB Termimal
Block .
2. Remove the 4 screws(B).
3. Remove the 2 screws(C) and then remove the HB-Board.
1. Disconnect the couplers (J1, J2, J3, J4, J5, J6, J7, J8, J10,
J15).
2. Remove the 4 screws and then remove the Slot Block.
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7.4. Removal of the J-Board
1. Remove the HA Terminal Block and the HB Terminal Block.
(Reference to Removal of the HA-Board and the HB-Board)
2. Remove the Slot Block.
(Reference to Removal of the Slot Block)
3. Remove the 6 screws and then remove the J-Board.
7.5. Removal of the HX-Board
1. Remove the HA Terminal Block and the HB Terminal Block.
(Reference to Removal of the HA-Board and the HB-Board)
2. Remove the Slot Block.
(Reference to Removal of the Slot Block)
3. Remove the J-Board.
(Reference to Removal of the J-Board)
4. Remove the 6 screws and then remove the Slot Case.
TH-37PHD8GK / TH-37PHD8GS / TH-37PHD8UK / TH-42PHD8GK / TH-42PHD8GS / TH-42PHD8UK
5. Remove the 4 Hexagonal-Head screws and the 1 screw
and then remove the HX-Board.
7.6. Removal of the PB-Board
1. Disconnect the couplers(PB30, PB31, PB35)
2. Remove the 1 screw and then remove the PB-Board.
13
TH-37PHD8GK / TH-37PHD8GS / TH-37PHD8UK / TH-42PHD8GK / TH-42PHD8GS / TH-42PHD8UK
7.7. Removal of the D-Board
7.8. Removal of the P-Board
1. Disconnect the couplers(PB30, PB31, PB35).
2. Remove the 3 screws and then remove the PB-Board
Block.
3. Disconnect the couplers(D1, D3, D5, D20, D25).
4. Remove the Flexible Cable from the couplers (D31, D32,
D33, D34).
5. Remove the 3 screws and then remove the D-Board.
1. Remove the 3 screws and then remove the Cover
2. Disconnect the couplers(P2, P5, P9, P10, P11, P12, P23,
P25, P30).
3. Remove the 4 screws and then remove the P-Board.
14
7.9. Removal of the H3-Board(L, R)
1. Remove the each 1 screw and then remove the Speaker
Terminal Block(L, R).
2. Disconnect the coupler(H37).
3. Remove the 3 screws(G) and then remove the H3-Board.
TH-37PHD8GK / TH-37PHD8GS / TH-37PHD8UK / TH-42PHD8GK / TH-42PHD8GS / TH-42PHD8UK
7.10. Removal of the SU-Board and
the SD-Board
1. Remove the Speaker Terminal Block(R).
(Reference to Removal of the H3-Board(L, R))
2. Remove the each 2 screws.
3. Disconnect the couplers(SU45, SD46).
4. Slide the SU-Board and the SD-Board to the left.
5. Remove the Flexible Cable from the couplers(SU1, SU2,
SU3) and then remove the SU-Board.
6. Remove the Flexible Cable from the couplers(SD1, SD2,
SD3) and then remove the SD-Board.
15
TH-37PHD8GK / TH-37PHD8GS / TH-37PHD8UK / TH-42PHD8GK / TH-42PHD8GS / TH-42PHD8UK
7.11. Removal of the SC-Board
1. Remove the Speaker Terminal Block(R).
(Reference to Removal of the H3-Board(L, R))
2. Remove the each 2 screws.
3. Disconnect the couplers(SU45, SD46).
4. Slide the SU-Board and the SD-Board to the left.
(Reference to Removal of the SU-Board and the SD-Board)
5. Disconnect the couplers(SC2, SC20, SC23).
6. Remove the 6 screws and then remove the SC-Board.
7.13. Removal of the C1, C2, C3 and
the C4-Board
1. Remove the Slot Block.
(Reference to Removal of the Slot Block)
2. Remove the Speaker Terminal Block(L, R).
(Reference to Removal of the H3-Board(L, R))
3. Remove the each 3 screws and then remove the Fan
Blocks.
4. Remove the each 3 screws and then remove the Stand
Blocks.
7.12. Removal of the SS-Board
1. Disconnect the couplers(SS11, SS12, SS24, SS32, SS34).
2. Remove the Flexible Cable from the couplers(SS51, SS52,
SS53, SS54)
3. Remove the 6 screws and then remove the SS-Board.
7.13.1. Removal of the C1-Board
1. Remove the Flexible Cable from the coupler(C11) .
2. Disconnect the coupler(C12) .
3. Remove the 8 screws and then remove the Flexible Cable
from the couplers(CA1, CA2, CA3, CA4).
4. Remove the each 3 screws and then remove the C1-Board.
16
7.13.2. Removal of the C2-Board
TH-37PHD8GK / TH-37PHD8GS / TH-37PHD8UK / TH-42PHD8GK / TH-42PHD8GS / TH-42PHD8UK
7.13.4. Removal of the C4-Board
1. Remove the Flexible Cable from the coupler(C21).
2. Disconnect the couplers(C22, C24).
3. Remove the 8 screws and then remove the Flexible Cable
from the couplers(CA5, CA6, CA7, CA8).
4. Remove the 3 screws and then remove the C2-Board.
7.13.3. Removal of the C3-Board
1. Remove the Flexible Cable from the coupler(C31).
2. Disconnect the couplers(C32, C33).
3. Remove the 8 screws and then remove the Flexible Cable
from the couplers(CB5, CB6, CB7, CB8).
4. Remove the 3 screws and then remove the C3-Board.
1. Remove the Flexible Cable from the coupler(C41).
2. Disconnect the coupler(C43).
3. Remove the 8 screws and then remove the Flexible Cable
from the couplers(CB1, CB2, CB3, CB4).
4. Remove the 3 screws and then remove the C4-Board.
7.14. Removal of the S1-Board
1. Disconnect the coupler(SS34).
2. Remove the 2 screws(H) and then remove the S1-Board
Block.
3. Disconnect the coupler(S34).
4. Remove the 1 screw(J) and then remove the S1-Board.
17
TH-37PHD8GK / TH-37PHD8GS / TH-37PHD8UK / TH-42PHD8GK / TH-42PHD8GS / TH-42PHD8UK
7.15. Removal of the Fan
1. Disconnect the couplers(PB31, PB35).
2. Remove the each 3 screws and then remove the 2 Fan
Blocks.
3. Remove the each 2 screws.
4. Remove the each 2 Fan brackets and the each 4 Cushion
s(rubber) and then remove the 2 Fans.
Note:
The Sponge (Fan center) and the Cushion (Fan) are
unsuitable to reuse.
Please use a new one at the time of Fan exchange.
7.16. Removal of the Escutcheon
1. Remove the S1-Board Block.
(Reference to Removal of the S1-Board)
2. Disconnect the couplers(J2, J15).
3. Remove the 2 screws of the Escutcheon.
5. Reassemble the Fans in reverse order.
6. Stick the Sponge (Fan center) on the central part of the
Fan.
7. Stick the Cushion (Fan) around the Fan.
4. Pull the bottom of the Escutcheon in the direction of the
arrow1 and then lift up the Escutcheon to remove in the
direction of the arrow2.
18
7.17. Removal of the V1-Board and
the V2-Board
1. Operate from procedure 1 to procedure 3 of 7.16.
(Reference to Removal of the Escutcheon)
2. Remove the 2 screws(K) and then remove the Fixed Angle.
3. Remove the 1 screw(L).
4. Remove the operation button from the V2-Board.
5. Disconnect the coupler(V15) and then remove the V2-
Board.
6. Disconnect the coupler(V2) and then remove the V1-Board.
TH-37PHD8GK / TH-37PHD8GS / TH-37PHD8UK / TH-42PHD8GK / TH-42PHD8GS / TH-42PHD8UK
4. Disconnect the couplers(J1, J2, J3, J4, J5, J6, J7, J8, J10,
J15).
5. Remove the 4 screws and then remove the Slot Block.
6. Disconnect the coupler(PB30).
7. Remove the 3 screws and then remove the PB-Board
Block.
8. Disconnect the couplers(D20, D25).
9. Remove the Flexible Cable from the couplers(D31, D32,
D33, D34).
10. Remove the 4 screws and then remove the D-Board.
7.18. Removal of the Plasma Panel
1. Disconnect the couplers(PB31, PB35).
2. Remove the each 3 screws and then remove the Fan
Blocks.
3. Remove the each 3 screws and then remove the Stand
Block(L, R).
11. Remove the 3 screws and then remove the Cover.
19
TH-37PHD8GK / TH-37PHD8GS / TH-37PHD8UK / TH-42PHD8GK / TH-42PHD8GS / TH-42PHD8UK
12. Disconnect the couplers(P2, P9, P11, P12, P23) .
13. Remove the 5 screws and then remove the P-Board.
14. Remove the each 1 screw and then remove the Speaker
Terminal Block(L, R).
15. Disconnect the couplers(SU45, SD46).
16. Remove the each 2 screws and then slide the SU-Board
and the SD-Board to the left.
19. Remove the 6 screws and then remove the SC-Board.
20. Disconnect the couplers(SS24, SS32, SS34).
21. Remove the Flexible Cable from the couplers(SS51, SS52,
SS53, SS54).
22. Remove the 6 screws and then remove the SS-Board.
17. Remove the Flexible Cable from the couplers(SU1, SU2,
SU3) and then remove the SU-Board.
18. Remove the Flexible Cable from the couplers(SD1, SD2,
SD3) and then remove the SD-Board.
23. Disconnect the coupler(C12).
24. Remove the 8 screws and then remove the Flexible Cable
from the couplers(CA1, CA2, CA3, CA4).
25. Remove the 3 screws and then remove the C1-Board.
20
26. Remove the 8 screws and then remove the Flexible Cable
from the couplers(CA5, CA6, CA7, CA8).
27. Remove the 3 screws and then remove the C2-Board.
28. Disconnect the coupler(C33).
29. Remove the 8 screws and then remove the Flexible Cable
from the couplers(CB5, CB6, CB7, CB8, C31).
30. Remove the 3 screws and then remove the C3-Board.
TH-37PHD8GK / TH-37PHD8GS / TH-37PHD8UK / TH-42PHD8GK / TH-42PHD8GS / TH-42PHD8UK
33. Remove the 2 screws and then remove the S1-Board Block.
34. Remove the 2 screws and then remove the AC Inlet Block.
35. Remove the 2 screws and then remove the Shield Sheet.
36. Pull out the Flexible Cable.
37. Remove the 3 screws and then remove the Cable Holder.
38. Remove the 2 screws of the Escutcheon.
31. Remove the 8 screws and then remove the Flexible Cable
from the couplers(CB1, CB2, CB3, CB4, C41).
32. Remove the 3 screws and then remove the C4-Board.
39. Lift up the bottom of the Plasma Panel in the direction of the
arrow1 and pull the Plasma Panel in the direction of the
arrow2 and then remove the Plasma Panel.
21
TH-37PHD8GK / TH-37PHD8GS / TH-37PHD8UK / TH-42PHD8GK / TH-42PHD8GS / TH-42PHD8UK
8 Disassembly TH-42PHD8
· To disassemble P.C.B. , wait for 1 minute after power was
off for discharge from electrolysis capacitors.
and marks indicate screw positions.
·
8.1. Removal of the Back Cover
1. Remove the screws (×8 ,×4 ,×6 , ×10 ) and then
remove the Back Cover.
Removal of the HA-Board
1. Remove the 4 screws(D) and then remove the HA
Terminal Block.
2. Remove the 4 screws(E) .
3. Remove the 2 screws(F) and then remove the HABoard.
8.2. Removal of the HA-Board and
the HB-Board
8.2.1. TH-42PHD8UK
Removal of the HB-Board.
1. Remove the 4 screws(A) and then remove the HB
Terminal Block.
2. Remove the 4 screws(B).
3. Remove the 2 screws(C) and then remove the HBBoard.
22
8.3. Removal of the Slot Block
TH-37PHD8GK / TH-37PHD8GS / TH-37PHD8UK / TH-42PHD8GK / TH-42PHD8GS / TH-42PHD8UK
8.5. Removal of the HX-Board
1. Disconnect the couplers (J1, J2, J3, J4, J5, J6, J7, J8, J10,
J15).
2. Remove the 4 screws and then remove the Slot Block.
8.4. Removal of the J-Board
1. Remove the HA Terminal Block and the HB Terminal Block.
(Reference to Removal of the HA-Board and the HB-Board)
2. Remove the Slot Block.
(Reference to Removal of the Slot Block)
3. Remove the 8 screws and then remove the J-Board.
1. Remove the HA Terminal Block and the HB Terminal Block.
(Reference to Removal of the HA-Board and the HB-Board)
2. Remove the Slot Block.
(Reference to Removal of the Slot Block)
3. Remove the J-Board.
(Reference to Removal of the J-Board)
4. Remove the 6 screws and then remove the Slot Case.
5. Remove the 4 Hexagonal-Head screws and the 1 screw
and then remove the HX-Board.
23
TH-37PHD8GK / TH-37PHD8GS / TH-37PHD8UK / TH-42PHD8GK / TH-42PHD8GS / TH-42PHD8UK
8.6. Removal of the PB-Board
8.8. Removal of the P-Board
1. Disconnect the couplers(PB30, PB31, PB33, PB35)
2. Remove the 1 screw and then remove the PB-Board.
8.7. Removal of the D-Board
1. Disconnect the couplers(PB30, PB31, PB33, PB35).
2. Remove the 3 screws and then remove the PB-Board
Block.
1. Remove the 4 screws and then remove the Cover.
2. Disconnect the couplers(P2, P5, P9, P10, P11, P12, P23,
P25, P30).
3. Remove the 4 screws and then remove the P-Board.
3. Disconnect the couplers(D1, D3, D5, D20, D25).
4. Remove the Flexible Cable from the couplers (D31, D32,
D33, D34).
5. Remove the 3 screws and then remove the D-Board.
24
8.9. Removal of the H3-Board(L, R)
1. Remove the each 1 screw and then remove the Speaker
Terminal Block(L, R).
2. Disconnect the coupler(H37).
3. Remove the 3 screws(G) and then remove the H3-Board.
TH-37PHD8GK / TH-37PHD8GS / TH-37PHD8UK / TH-42PHD8GK / TH-42PHD8GS / TH-42PHD8UK
8.10. Removal of the SU-Board and
the SD-Board
1. Remove the Speaker Terminal Block(R).
(Reference to Removal of the H3-Board(L, R))
2. Remove the each 2 screws.
3. Slide the SU-Board and the SD-Board to the left.
4. Disconnect the couplers(SU45, SD46).
5. Remove the Flexible Cable from the couplers(SU1, SU2,
SU3, SU4) and then remove the SU-Board.
6. Remove the Flexible Cable from the couplers(SD1, SD2,
SD3, SD4) and then remove the SD-Board.
25
TH-37PHD8GK / TH-37PHD8GS / TH-37PHD8UK / TH-42PHD8GK / TH-42PHD8GS / TH-42PHD8UK
8.11. Removal of the SC-Board
8.13. Removal of the SS-Board
1. Remove the Speaker Terminal Block(R).
(Reference to Removal of the H3-Board(L, R))
2. Remove the each 2 screws.
3. Slide the SU-Board and the SD-Board to the left.
(Reference to Removal of the SU-Board and the SD-Board)
4. Disconnect the couplers(SC2, SC20, SC23, SC45, SC46).
5. Remove the 6 screws and then remove the SC-Board.
8.12. Removal of the SS2-Board and
the SS3-Board
1. Disconnect the coupler(SS23).
2. Remove the Flexible Cable from the coupler(SS55).
3. Disconnect the coupler(SS22).
4. Remove the Flexible Cable from the coupler(SS56).
5. Remove the each 2 screws and then remove the SS2Board and the SS3-Board.
1. Disconnect the couplers(SS11, SS12, SS22, SS23, SS24,
SS32, SS34).
2. Remove the Flexible Cable from the couplers(SS52, SS53)
3. Remove the 6 screws and then remove the SS-Board.
8.14. Removal of the C1, C2, C3 and
the C4-Board
1. Remove the Slot Block.
(Reference to Removal of the Slot Block)
2. Remove the Speaker Terminal Block(L, R).
(Reference to Removal of the H3-Board(L, R))
3. Remove the each 3 screws and then remove the Fan
Blocks.
4. Remove the each 3 screws and then remove the Stand
Blocks.
26
8.14.1. Removal of the C1-Board
TH-37PHD8GK / TH-37PHD8GS / TH-37PHD8UK / TH-42PHD8GK / TH-42PHD8GS / TH-42PHD8UK
8.14.3. Removal of the C3-Board
1. Remove the Flexible Cable from the coupler(C11) .
2. Disconnect the coupler(C12) .
3. Remove the 8 screws and then remove the Flexible Cable
from the couplers(CA1, CA2, CA3, CA4).
4. Remove the each 3 screws and then remove the C1-Board.
8.14.2. Removal of the C2-Board
1. Remove the Flexible Cable from the coupler(C21).
2. Disconnect the couplers(C22, C24).
3. Remove the 8 screws and then remove the Flexible Cable
from the couplers(CA5, CA6, CA7, CA8, C31).
4. Remove the 3 screws and then remove the C2-Board.
1. Remove the Flexible Cable from the coupler(C31).
2. Disconnect the couplers(C32, C33).
3. Remove the 8 screws and then remove the Flexible Cable
from the couplers(CB5, CB6, CB7, CB8, C31).
4. Remove the 3 screws and then remove the C3-Board.
8.14.4. Removal of the C4-Board
1. Remove the Flexible Cable from the coupler(C41).
2. Disconnect the coupler(C43).
3. Remove the 8 screws and then remove the Flexible Cable
from the couplers(CB1, CB2, CB3, CB4, C41).
4. Remove the 3 screws and then remove the C4-Board.
27
TH-37PHD8GK / TH-37PHD8GS / TH-37PHD8UK / TH-42PHD8GK / TH-42PHD8GS / TH-42PHD8UK
8.15. Removal of the S1-Board
1. Disconnect the coupler(SS34).
2. Remove the 2 screws(H) and then remove the S1-Board
Block.
3. Disconnect the coupler(S34).
4. Remove the 1 screw(J) and then remove the S1-Board.
3. Remove the each 2 screws.
4. Remove the each 2 Fan brackets and the each 4 Cushion
s(rubber) and then remove the 3 Fans..
5. Reassemble the Fans in reverse order.
6. Stick the Sponge (Fan center) on the central part of the
Fan.
7. Stick the Cushion (Fan) around the Fan.
8.16. Removal of the Fan
1. Disconnect the couplers(PB31, PB33, PB35).
2. Remove the each 3 screws and then remove the 3 Fan
Blocks.
Note:
The Sponge (Fan center) and the Cushion (Fan) are
unsuitable to reuse.
Please use a new one at the time of Fan exchange.
28
8.17. Removal of the Escutcheon
1. Remove the S1-Board Block.
(Reference to Removal of the S1-Board)
2. Disconnect the couplers(J2, J15).
3. Remove the 2 screws of the Escutcheon.
4. Pull the bottom of the Escutcheon in the direction of the
arrow1 and then lift up the Escutcheon to remove in the
direction of the arrow2.
TH-37PHD8GK / TH-37PHD8GS / TH-37PHD8UK / TH-42PHD8GK / TH-42PHD8GS / TH-42PHD8UK
8.18. Removal of the V1-Board and
the V2-Board
1. Operate from procedure 1 to procedure 3 of 8.17.
(Reference to Removal of the Escutcheon)
2. Remove the 2 screws(K) and then remove the Fixed Angle.
3. Remove the 1 screw(M).
4. Remove the operation button from the V2-Board.
5. Disconnect the coupler(V15) and then remove the V2-
Board.
6. Disconnect the coupler(V2) and then remove the V1-Board.
29
TH-37PHD8GK / TH-37PHD8GS / TH-37PHD8UK / TH-42PHD8GK / TH-42PHD8GS / TH-42PHD8UK
8.19. Removal of the Plasma Panel
1. Disconnect the couplers(PB31, PB33, PB35).
2. Remove the each 3 screws and then remove the Fan
Blocks.
3. Remove the each 3 screws and then remove the Stand
Block(L, R).
8. Disconnect the couplers(D20, D25).
9. Remove the Flexible Cable from the couplers(D31, D32,
D33, D34).
10. Remove the 4 screws and then remove the D-Board.
11. Disconnect the couplers(P2, P9, P11, P12, P23) .
12. Remove the 4 screws and then remove the Cover.
4. Disconnect the couplers(J1, J2, J3, J4, J5, J6, J7, J8, J10,
J15).
5. Remove the 4 screws and then remove the Slot Block.
6. Disconnect the coupler(PB30).
7. Remove the 3 screws and then remove the PB-Board
Block.
13. Remove the 4 screws and then remove the P-Board.
14. Remove the each 1 screw and then remove the Speaker
Terminal Block(L, R).
30
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