Panasonic TH-37PHD8GK User manual

©2005 Matsushita Electric Industrial Co., Ltd. All
rights reserved. Unauthorized copying and
distribution is a violation of law.
TH-37PHD8GK
TH-37PHD8GS
TH-37PHD8UK
TH-42PHD8GK
TH-42PHD8GS
TH-42PHD8UK
GPH8D Chassis
High Definition Plasma Display
Specifications
Power Source 120 V
A
C, 50/60Hz
Power Consumption
Maximum 282 W (37 inch) 337 W (42 inch)
Stand-b
y
condition 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 Displa
y
panel Drive method:
A
C type 37-inch, Drive method:
A
C 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
y
20 % - 80 %
Applicabl
e
signals
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
30p 24sF .... SMPTE274M, 1250 (1080) / 50i
PC signals VGA, SVG
A
VGA, SVGA, XG
A
XGA, SXGA, UXG
A
..... (compressed) SXGA, UXG
A
..... (compressed)
(37 inch) (42 inch)
Horizontal scanning frequency 15 - 110 kHz
Vertical scanning frequency 48 - 120 Hz
0.7 Vp-p (75-ohm)
ORDERNO. ITD0508042CE
D10Canada: B07

1 Applicable signals 5
2 Safety Precautions 6
2.1. General Guidelines 6
3 Prevention of Electro Static Discharge (ESD) to
Electrostatically Sensitive (ES) Devices 7
4 About lead free solder (PbF) 8
5 PCB Structure sheet of GPH8D chassis 9
6 Service Hint 10
7 Disassembly TH-37PHD8 12
7.1. Removal of the Back Cover 12
7.2. Removal of the HA-Board and the HB-Board 12
7.3. Removal of the Slot Block 12
7.4. Removal of the J-Board 13
7.5. Removal of the HX-Board 13
7.6. Removal of the PB-Board 13
7.7. Removal of the D-Board 14
7.8. Removal of the P-Board 14
7.9. Removal of the H3-Board(L, R) 15
7.10. Removal of the SU-Board and the SD-Board 15
7.11. Removal of the SC-Board 16
7.12. Removal of the SS-Board 16
7.13. Removal of the C1, C2, C3 and the C4-Board 16
7.14. Removal of the S1-Board 17
7.15. Removal of the Fan 18
7.16. Removal of the Escutcheon 18
7.17. Removal of the V1-Board and the V2-Board 19
Connection terminals
A
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)
A
UDIO IN (RCA PIN JACK × 2) 0.5 Vrms (high impedance)
COMPONENT / RGB (UK)
Y
/ 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)
A
UDIO IN (RCA PIN JACK × 2) 0.5 Vrms (high impedance)
PC (HIGH-DENSIT
Y
Mini-D-SUB 15PIN) R,G,B
/
0.7 Vp-p (75-ohm)
Component
Y
:1.0 Vp-p (75-ohm : include sync)
PB
/
CB:0.7 Vp-p (75-ohm)
PR
/
CR:0.7 Vp-p (75-ohm)
HD, VD
/
1.0 - 5.0 Vp-p (high impedance)
A
UDIO IN (M3 JACK) 0.5 Vrms (high impedance)
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×
AA
Size
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)
(exclusive of protruding portion) (37 inch) (exclusive of protruding portion) (42 inch)
Mass (weight) (UK)
main unit onl
y
approx. 57.3 lbs (37 inch) approx. 69.4 lbs (42 inch)
with speakers approx. 66.1 lbs (37 inch) approx. 78.3 lbs (42 inch)
Mass (weight) (GK/GS)
main unit onl
y
approx. 56.2 lbs (37 inch) approx. 68.3 lbs (42 inch)
with speakers approx. 65.0 lbs (37 inch) approx. 77.2 lbs (42 inch)
Notes:
· Design and specifications are subject to change without notice. Mass and dimensions shown are approximate.
CONTENTS
Page Page
2
TH-37PHD8GK / TH-37PHD8GS / TH-37PHD8UK / TH-42PHD8GK / TH-42PHD8GS / TH-42PHD8UK

7.18. Removal of the Plasma Panel 19
8 Disassembly TH-42PHD8 22
8.1. Removal of the Back Cover 22
8.2. Removal of the HA-Board and the HB-Board 22
8.3. Removal of the Slot Block 23
8.4. Removal of the J-Board 23
8.5. Removal of the HX-Board 23
8.6. Removal of the PB-Board 24
8.7. Removal of the D-Board 24
8.8. Removal of the P-Board 24
8.9. Removal of the H3-Board(L, R) 25
8.10. Removal of the SU-Board and the SD-Board 25
8.11. Removal of the SC-Board 26
8.12. Removal of the SS2-Board and the SS3-Board 26
8.13. Removal of the SS-Board 26
8.14. Removal of the C1, C2, C3 and the C4-Board 26
8.15. Removal of the S1-Board 28
8.16. Removal of the Fan 28
8.17. Removal of the Escutcheon 29
8.18. Removal of the V1-Board and the V2-Board 29
8.19. Removal of the Plasma Panel 30
9 Location of Lead Wiring 33
9.1. Wiring for 37 inch model 33
9.2. Wiring for 42 inch model 35
10 Adjustment Procedure 37
10.1. Driver Set-up 37
10.2. Initialization Pulse Adjust 38
10.3. P.C.B. (Printed Circuit Board) exchange 39
10.4. Adjustment Volume Location 40
10.5. Test Point Location 41
11 Service mode 42
11.1. CAT (computer Aided Test) mode 42
11.2. IIC mode structure (following items value is sample data.)
44
12 Alignment 45
12.1. PC / RGB panel white balance 45
12.2. HD / 525ip / 625ip panel white balance 47
13 Trouble shooting guide 49
13.1. Self Check 49
13.2. No Power 50
13.3. No Picture 50
13.4. Local screen failure 51
14 Option Setting 52
15 Circuit Board Layout 55
15.1. P-Board (37inch) 55
15.2. P-Board (42inch) 58
15.3. PB-Board 61
15.4. HA-Board 62
15.5. HB-Board 63
15.6. HX-Board (37inch) 64
15.7. HX-Board (42inch) 65
15.8. J-Board (37inch) 66
15.9. J-Board (42inch) 68
15.10. D-Board 70
15.11. C1-Board (37inch) 72
15.12. C1-Board (42inch) 73
15.13. C2-Board (37inch) 74
15.14. C2-Board (42inch) 75
15.15. C3-Board (37inch) 76
15.16. C3-Board (42inch) 77
15.17. C4-Board (37inch) 78
15.18. C4-Board (42inch) 79
15.19. SC-Board (37inch) 80
15.20. SC-Board (42inch) 83
15.21. SU-Board (37inch) 86
15.22. SU-Board (42inch) 87
15.23. SD-Board (37inch) 88
15.24. SD-Board (42inch) 89
15.25. SS-Board (37inch) 90
15.26. SS, SS2 and SS3-Board (42inch) 92
15.27. H3, S1, V1 and V2-Board 94
16 Block and Schematic Diagram 95
16.1. Schematic Diagram Notes 95
16.2. Main Block Diagram (37inch) 96
16.3. Main Block Diagram (42inch) 97
16.4. P-Board Block Diagram (37inch) 98
16.5. P-Board (1 of 6) Schematic Diagram (37inch) 99
16.6. P-Board (2 of 6) Schematic Diagram (37inch) 100
16.7. P-Board (3 of 6) Schematic Diagram (37inch) 101
16.8. P-Board (4 of 6) Schematic Diagram (37inch) 102
16.9. P-Board (5 of 6) Schematic Diagram (37inch) 103
16.10. P-Board (6 of 6) Schematic Diagram (37inch) 104
16.11. P-Board Block Diagram (42inch) 105
16.12. P-Board (1 of 2) Schematic Diagram (42inch) 106
16.13. P-Board (2 of 2) Schematic Diagram (42inch) 107
16.14. PB-Board Block and Schematic Diagram 108
16.15. HA-Board Block and Schematic Diagram 109
16.16. HB-Board Block Diagram 110
16.17. HB-Board (1 of 2) Schematic Diagram 111
16.18. HB-Board (2 of 2) Schematic Diagram 112
16.19. HX-Board Block and Schematic Diagram 113
16.20. J-Board (1 of 2) and H3-Board Block Diagram 114
16.21. J-Board (2 of 2) Block Diagram 115
16.22. J-Board (1 of 4) and H3-Board Schematic Diagram
(37inch) 116
16.23. J-Board (2 of 4) Schematic Diagram (37inch) 117
16.24. J-Board (3 of 4) Schematic Diagram (37inch) 118
16.25. J-Board (4 of 4) Schematic Diagram (37inch) 119
16.26. J-Board (1 of 4) and H3-Board Schematic Diagram
(42inch) 120
16.27. J-Board (2 of 4) Schematic Diagram (42inch) 121
16.28. J-Board (3 of 4) Schematic Diagram (42inch) 122
16.29. J-Board (4 of 4) Schematic Diagram (42inch) 123
16.30. D-Board (1 of 2) Block Diagram 124
16.31. D-Board (2 of 2) Block Diagram 125
16.32. D-Board (1 of 12) Schematic Diagram 126
16.33. D-Board (2 of 12) Schematic Diagram 127
16.34. D-Board (3 of 12) Schematic Diagram 128
3
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 130
16.37. D-Board (6 of 12) Schematic Diagram 131
16.38. D-Board (7 of 12) Schematic Diagram 132
16.39. D-Board (8 of 12) Schematic Diagram 133
16.40. D-Board (9 of 12) Schematic Diagram 134
16.41. D-Board (10 of 12) Schematic Diagram 135
16.42. D-Board (11 of 12) Schematic Diagram 136
16.43. D-Board (12 of 12) Schematic Diagram 137
16.44. C1, C2, C3 and C4-Board Block Diagram 138
16.45. C1-Board (1 of 2) Schematic Diagram (37inch) 139
16.46. C1-Board (2 of 2) Schematic Diagram (37inch) 140
16.47. C1-Board (1 of 2) Schematic Diagram (42inch) 141
16.48. C1-Board (2 of 2) Schematic Diagram (42inch) 142
16.49. C2-Board (1 of 2) Schematic Diagram (37inch) 143
16.50. C2-Board (2 of 2) Schematic Diagram (37inch) 144
16.51. C2-Board (1 of 2) Schematic Diagram (42inch) 145
16.52. C2-Board (2 of 2) Schematic Diagram (42inch) 146
16.53. C3-Board (1 of 2) Schematic Diagram (37inch) 147
16.54. C3-Board (2 of 2) Schematic Diagram (37inch) 148
16.55. C3-Board (1 of 2) Schematic Diagram (42inch) 149
16.56. C3-Board (2 of 2) Schematic Diagram (42inch) 150
16.57. C4-Board (1 of 2) Schematic Diagram (37inch) 151
16.58. C4-Board (2 of 2) Schematic Diagram (37inch) 152
16.59. C4-Board (1 of 2) Schematic Diagram (42inch) 153
16.60. C4-Board (2 of 2) Schematic Diagram (42inch) 154
16.61. SC-Board Block Diagram (37inch) 155
16.62. SC-Board (1 of 2) Schematic Diagram (37inch) 156
16.63. SC-Board (2 of 2) Schematic Diagram (37inch) 157
16.64. SC-Board Block Diagram (42inch) 158
16.65. SC-Board (1 of 2) Schematic Diagram (42inch) 159
16.66. SC-Board (2 of 2) Schematic Diagram (42inch) 160
16.67. SU-Board Block Diagram (37inch) 161
16.68. SU-Board (1 of 2) Schematic Diagram (37inch) 162
16.69. SU-Board (2 of 2) Schematic Diagram (37inch) 163
16.70. SU-Board Block Diagram (42inch) 164
16.71. SU-Board (1 of 2) Schematic Diagram (42inch) 165
16.72. SU-Board (2 of 2) Schematic Diagram (42inch) 166
16.73. SD-Board Block Diagram (37inch) 167
16.74. SD-Board (1 of 2) Schematic Diagram (37inch) 168
16.75. SD-Board (2 of 2) Schematic Diagram (37inch) 169
16.76. SD-Board Block Diagram (42inch) 170
16.77. SD-Board (1 of 2) Schematic Diagram (42inch) 171
16.78. SD-Board (2 of 2) Schematic Diagram (42inch) 172
16.79. SS-Board Block Diagram (37inch) 173
16.80. SS-Board Schematic Diagram (37inch) 174
16.81. SS, SS2 and SS3-Board Block Diagram (42inch) 175
16.82. SS, SS2 and SS3-Board Schematic Diagram (42inch) 176
16.83. S1, V1 and V2-Board Block and Schematic Diagram 177
17 Parts Location 179
17.1. Exploded View 179
17.2. Cable relation 183
17.3. Packing summary 184
18 Mechanical Replacement Parts List 186
19 Replacement Parts List 188
19.1. Relpacement Parts List Notes 188
19.2. Electrical Replacement Parts List (37 inch) 189
19.3. Electrical Replacement Parts List (42 inch) 213
4
TH-37PHD8GK / TH-37PHD8GS / TH-37PHD8UK / TH-42PHD8GK / TH-42PHD8GS / TH-42PHD8UK

1 Applicable signals
5
TH-37PHD8GK / TH-37PHD8GS / TH-37PHD8UK / TH-42PHD8GK / TH-42PHD8GS / TH-42PHD8UK

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
1MΩand 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.
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.
6
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).
7
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 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-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 1
J Slot Interface (Audio/Video/Sync input Switch),
SYNC processor, Audio processor,
Speaker out amplifier, DC-DC converter
1
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
Remarks
1: Recommend PCB´s for initial service for GPH8D chassis.
2: For TH-42PHD8GK/GS/UK
3: For TH-37/42PHD8UK
9
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)
10
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.
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.
· 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
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.
12
TH-37PHD8GK / TH-37PHD8GS / TH-37PHD8UK / TH-42PHD8GK / TH-42PHD8GS / TH-42PHD8UK

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.
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
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.
7.8. Removal of the P-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
TH-37PHD8GK / TH-37PHD8GS / TH-37PHD8UK / TH-42PHD8GK / TH-42PHD8GS / TH-42PHD8UK

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.
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.
7.12. 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. 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.
7.13.1. 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
TH-37PHD8GK / TH-37PHD8GS / TH-37PHD8UK / TH-42PHD8GK / TH-42PHD8GS / TH-42PHD8UK

7.13.2. 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).
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.
7.13.4. 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).
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.
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.
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.
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
TH-37PHD8GK / TH-37PHD8GS / TH-37PHD8UK / TH-42PHD8GK / TH-42PHD8GS / TH-42PHD8UK

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.
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).
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.
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.
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.
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.
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
TH-37PHD8GK / TH-37PHD8GS / TH-37PHD8UK / TH-42PHD8GK / TH-42PHD8GS / TH-42PHD8UK