Power on300 W (37 inch)345 W (42 inch)
Stand-byconditionSave OFF 0.6 W, Save ON 0.4 W (37 inch)Save OFF 0.6 W, Save ON 0.4 W (42 inch)
Power off condition0.1 W (37 inch)0.1 W (42 inch)
Plasma DisplaypanelDrive method:AC type 37-inch,Drive method:AC type 42-inch,
16:9 aspect ratio (37 inch)16:9 aspect ratio (42 inch)
15.68. SU-Board (2 of 2) Schematic Diagram (42inch)
15.69. SD-Board (1 of 2) Schematic Diagram (37inch)
15.70. SD-Board (2 of 2) Schematic Diagram (37inch)
15.71. SD-Board (1 of 2) Schematic Diagram (42inch)
15.72. SD-Board (2 of 2) Schematic Diagram (42inch)
15.73. SS and S1-Board Block Diagram
15.74. SS and S1-Board Schematic Diagram
16 Parts Location
16.1. Exploded View
16.2. Cable relation
16.3. Packing summary
17 Mechanica l Replacement Parts List
18 Replacement Parts List
18.1. Replacement Parts List Notes
18.2. Electrical Replacement Parts List (37 inch)
18.3. Electrical Replacement Parts List (42 inch)
154
155
156
157
158
159
160
161
161
164
165
166
167
167
168
191
4
1 Applicable signals
TH-37PH9UK / TH-42PH9UK
5
TH-37PH9UK / TH-42PH9UK
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 screw heads, 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.
6
TH-37PH9UK / TH-42PH9UK
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
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 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-37PH9UK / TH-42PH9UK
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.
8
5 Service Hint
TH-37PH9UK / TH-42PH9UK
Board NameFunction
DADigital Signal Processor, Micon
DFormat Converter, Plasma AI Processor
JSlot Interface (Audio / Video / Sync input
SSSustain drive
SCScan drive
SUScan out (Upper)
SDScan out (Lower)
C1Data Drive (Right)
C2Data Drive (Left)
H3Speaker terminal
S1Power switch
V1Remote receiver, LED-G, R
V2Key switch
PPower supply
PBFan control
HXPC / RS-232C_Input terminal
HUDual Video terminal (BNC / S)
HAComponent Video terminal (BNC)
Sub-Field Processor
Switch),
SYNC processor, Sound processor,
Note:
· Extension cable kit Slot Board is supplied as service fixtures and tools.
(Parts No. TZSC0704)
9
TH-37PH9UK / TH-42PH9UK
Board NameFunction
DADigital Signal Processor, Micon
DFormat Converter, Plasma AI Processor
JSlot Interface (Audio / Video / Sync input
SSSustain drive
SCScan drive
SUScan out (Upper)
SDScan out (Lower)
C1Data Drive (Right)
C2Data Drive (Left)
H3Speaker terminal
S1Power switch
V1Remote receiver, LED-G, R
V2Key switch
PPower supply
PBFan control
HXPC / RS-232C_Input terminal
HUDual Video terminal (BNC / S)
HAComponent Video terminal (BNC)
Sub-Field Processor
Switch),
SYNC processor, Sound processor,
Note:
· Extension cable kit Slot Board is supplied as service fixtures and tools.
(Parts No. TZSC0704)
10
6 Disassembly (37 inch)
· To disassemble P.C.B., wait for 1 minute after power was
off for discharge from electrolysis capacitors.
andmarks indicate screw positions.
·
6.1. Removal of the Back Cover
1. Remove the screws (×16,×5 ,×4 ) and then remove
the Back Cover.
TH-37PH9UK / TH-42PH9UK
6.3. 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 3 screws(F) and then remove the HA-Board.
6.4. Removal of the Slot Block
6.2. Removal of the HU-Board
1. Remove the 4 screws(A) and then remove the HU Terminal
Block.
2. Remove the 4 screws(B).
3. Remove the 3 screws(C) and then remove the HU-Board.
5. Remove the 4 screws and then remove the Slot Block.
) and then remove the 2 Fan
) and then remove the Stand
6. Disconnect the coupler(DA5).
7. Remove the Flexible Cable from the coupler(DA2).
8. Remove the 4 screws and then remove the DA-Board
Block.
17
TH-37PH9UK / TH-42PH9UK
9. Disconnect the couplers(P2, P9, P11, P12, P23, P25).
10. Remove the 6 screws (
11. Remove the each 1 screw (
) and then remove the P-Board.
) and then remove the
Speaker Terminal Black(L, R).
18. Disconnect the couplers(SS23, SS34).
19. Remove the Flexible Cable from the couplers(SS41, SS42,
SS43, SS44)
20. Remove the 6 screws and then remove the SS-Board.
12. Disconnect the coupler(D20).
13. Remove the Flexible Cable from the couplers(D31, D32).
14. Remove the 4 screws and then remove the D-Board.
15. Remove the SU-Board and the SD-Board.
(Reference to Removal of the SU-Board and the SD-Board)
16. Remote the 1 screw (
17. Remove the 6 screws (
) and then remove the clamper.
) and then remove the SC-Board.
21. Remove the Flexible Cable from the coupler(C12).
22. Remove the 8 screws (
) and then remove the Flexible
Cable from the couplers(CB1, CB2, CB3, CB4).
23. Remove the 4 screws (
) and then remove the C1-Board.
24. Remove the 8 screws ( ) and then remove the Flexible
Cable from the couplers(CB5, CB6, CB7, CB8).
25. Remove the 4 screws (
) and then remove the C2-Board.
18
26. Remove the 2 screws ( ) and then remove the S1-Board
Block.
27. Remove the 3 screws (
) and then remove the AC Inlet
Block.
28. Remove the 2 screws of the Escutcheon.
TH-37PH9UK / TH-42PH9UK
29. Lift up the bottom of the Plasma Panel in the direction of the
arrow 1 and pull the Plasma Panel in the direction of the
arrow 2 and then remove the Plasma Panel.
19
TH-37PH9UK / TH-42PH9UK
7 Disassembly (42 inch)
· To disassemble P.C.B., wait for 1 minute after power was
off for discharge from electrolysis capacitors.
andmarks indicate screw positions.
·
7.1. Removal of the Back Cover
1. Remove the screws (×18,×6 ,×4 ) and then remove
the Back Cover.
7.3. 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 3 screws(F) and then remove the HA-Board.
7.4. Removal of the Slot Block
7.2. Removal of the HU-Board
1. Remove the 4 screws(A) and then remove the HU Terminal
Block.
2. Remove the 4 screws(B).
3. Remove the 3 screws(C) and then remove the HU-Board.
5. Remove the 4 screws and then remove the Slot Block.
) and then remove the 3 Fan
) and then remove the Stand
6. Disconnect the coupler(DA5).
7. Remove the Flexible Cable from the coupler(DA2).
8. Remove the 4 screws and then remove the DA-Board
Block.
26
9. Disconnect the couplers(P2, P9, P11, P12, P23, P25).
10. Remove the 6 screws (
11. Remove the each 1 screw (
) and then remove the P-Board.
) and then remove the
Speaker Terminal Black(L, R).
TH-37PH9UK / TH-42PH9UK
18. Disconnect the couplers(SS23, SS34).
19. Remove the Flexible Cable from the couplers(SS41, SS42,
SS43, SS44)
20. Remove the 6 screws and then remove the SS-Board.
12. Disconnect the coupler(D20).
13. Remove the Flexible Cable from the couplers(D31, D32).
14. Remove the 4 screws and then remove the D-Board.
15. Remove the SU-Board and the SD-Board.
(Reference to Removal of the SU-Board and the SD-Board)
16. Remove the 1 screw (
17. Remove the 6 screws (
) and then remove the clamper.
) and then remove the SC-Board.
21. Remove the Flexible Cable from the coupler(C12).
22. Remove the 8 screws (
) and then remove the Flexible
Cable from the couplers(CB1, CB2, CB3, CB4).
23. Remove the 4 screws (
) and then remove the C1-Board.
24. Remove the 8 screws ( ) and then remove the Flexible
Cable from the couplers(CB5, CB6, CB7, CB8).
25. Remove the 4 screws (
) and then remove the C2-Board.
27
TH-37PH9UK / TH-42PH9UK
26. Remove the 2 screws ( ) and then remove the S1-Board
Block.
27. Remove the 3 screws (
) and then remove the AC Inlet
Block.
28. Remove the 2 screws of the Escutcheon.
29. Lift up the bottom of the Plasma Panel in the direction of the
arrow 1 and pull the Plasma Panel in the direction of the
arrow 2 and then remove the Plasma Panel.
28
8 Location of Lead Wiring
8.1. Wiring for the 37 inch model
8.1.1. Location of Lead Wiring (1)
The lead wiring is dressed as shown in figure.
TH-37PH9UK / TH-42PH9UK
29
TH-37PH9UK / TH-42PH9UK
8.1.2. Location of Lead wiring (2)
The lead wiring is dressed as shown in figure.
30
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