Panasonic PT-LB80NTU / PT-LB80NTE / PT-LB80NTEA / PT-LB80U / PT-LB80E / PT-LB80EA / PT-LB75NTU / PT-LB75NTE / PT-LB75NTEA / PT-LB75U / PT-LB75E / PT-LB75EA Service Manual ▷ View online
7 Disassembly Instructions
Warning:
·
Be sure to unplug the power cord from the power outlet before disassembling this projector.
Caution:
·
While turning over a printed circuit board, be sure to put a insulating material under it to prevent a short circuit.
·
Printed circuit boards and wires must not be pulled forcibly, but be handled carefully.
·
Connectors also must be handled carefully.
·
When reassembling, replace used adhesive tape with new one (Do not re-use used tape).
·
After repairing this projector, be sure to put back the wires and connectors to the original condition.
·
Service or repair the product according to service information on the service manual, etc. so that a fire, injury or electric
shock caused by an improper repair may not occur.
shock caused by an improper repair may not occur.
1. Do not modify equipments, components and materials when attempting to service or repair.
2. Do not repair nor connect wires even in case of a part of the disconnection when the wiring unit is supplied as a
replacement parts, replace the wiring unit (complete).
3. For a fasten terminal (push-in type terminal), pull out or insert straightly without twisting it.
4. When the fuse has blown, do not turn on the power supply replacing only the fuse because the secondary disaster of
fumes, fire or other hazards is expected. Turn on the power supply after doing the confirmation and measures of
defective causes (structure and circuit, etc.).
defective causes (structure and circuit, etc.).
5. After the service or the repair is completed, confirm the operation of the product is normal.
6. Do handling and safekeeping carefully because the user setup information remains in the projector.
7.1. Printed Circuit Board and Main Parts Location
Electrical Parts
Optical Parts
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PT-LB80NTU / PT-LB80NTE / PT-LB80NTEA / PT-LB80U / PT-LB80E / PT-LB80EA / PT-LB75NTU / PT-LB75NTE / PT-LB75NTEA / PT-LB75U / PT-LB75E / PT-LB75EA
7.2. Removal of Upper Case
1. Turn the projector upside down.
2. Unscrew the 7 screws.
3. Return the projector to the normal position.
4. Remove the upper case.
7.3. Removal of A-P.C.Board
1. Remove the upper case according to the section 7.2.
"Removal of Upper Case".
2. Loosen the 2 screws until they idle, remove the lamp unit
cover.
Note:
·
For the interlock switch damage prevention when
reassembling, must remove the lamp unit cover.
reassembling, must remove the lamp unit cover.
3. Unscrew the 2 screws and remove the connector cover.
4. Unscrew the 3 screws and remove the Lamp house.
5. Unscrew the 2 screws and remove the A-P.C.Board block
(with WL-P.C.Board).
6. Unscrew the 12 screws and remove the connector metal
fittings.
Note:
·
For
PT-LB80NT**/LB75NT**,
WL-P.C.Board
is
attached on the connector metal fittings. Be careful
with handling.
with handling.
7.4. Removal of K1-P.C.Board and
K2-P.C.Board Block
1. Remove the A-P.C.Board block according to the steps 1
through 5 in the section 7.3. "Removal of A-P.C.Board".
2. Loosen the 3 screws until they idle, remove the lamp unit
with the handle.
3. Unscrew the 3 screws and remove the block of Analysis
Block, LCD Block and Projection Lens.
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PT-LB80NTU / PT-LB80NTE / PT-LB80NTEA / PT-LB80U / PT-LB80E / PT-LB80EA / PT-LB75NTU / PT-LB75NTE / PT-LB75NTEA / PT-LB75U / PT-LB75E / PT-LB75EA
4. Unscrew the 2 screws fixing the socket holder.
5. Lift the socket holder, then unscrew the 1 screw and
remove the thermofuse attachment fittings.
6. Disconnect the connector between power block and K2-
P.C.Board.
7. Unscrew the 3 screws and remove the block of K1-
P.C.Board and K2-P.C.Board.
7.5. Removal of S-Module
1. Remove the upper case according to the section 7.2.
"Removal of Upper Case".
2. Unscrew the 5 screws and remove the S-Module.
Note:
·
If you disconnected the flexible cable between S-
Module and A-P.C.Board, must put back it to the original
condition (Connection described below).
Module and A-P.C.Board, must put back it to the original
condition (Connection described below).
If it makes a mistake in the direction of insertion, the
projector does not operate correctly.
projector does not operate correctly.
7.6. Removal of WL-P.C.Board
(Only for PT-
LB80NT**/LB75NT**)
LB80NT**/LB75NT**)
1. Remove the upper case according to the section 7.2.
"Removal of Upper Case".
2. Unscrew the 3 screws and remove the WL-P.C.Board.
7.7. Removal of Z-P.C.Board
1. Remove the block of Analysis Block, LCD Block and
Projection Lens according to the steps 1 through 3 in the
section 7.11. "Removal of Analysis Block and Projection
Lens".
section 7.11. "Removal of Analysis Block and Projection
Lens".
2. Unscrew the 2 screws and remove the lamp fan base.
3. Unscrew the 2 screws and remove the Z-P.C.Board.
7.8. Removal of B/Q-Module
1. Remove the A-P.C.Board block according to the steps 1
through 5 in the section 7.3. "Removal of A-P.C.Board".
2. Unscrew the 5 screws and remove the S-Module.
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PT-LB80NTU / PT-LB80NTE / PT-LB80NTEA / PT-LB80U / PT-LB80E / PT-LB80EA / PT-LB75NTU / PT-LB75NTE / PT-LB75NTEA / PT-LB75U / PT-LB75E / PT-LB75EA
3. Unscrew the 2 screws and remove the exhaust fan.
4. Unscrew the 3 screws fixing the power block (B/Q-Module
and P-Module).
5. Lift the power block, then unscrew the 1 screw and remove
the lamp connector terminal.
Note:
·
Because the lead wire between the power block and
the lamp connector terminal is short, be careful not
to apply excessive force into it.
the lamp connector terminal is short, be careful not
to apply excessive force into it.
6. Remove the power block.
7. Unscrew the 4 screws and separate the ballast unit and the
power unit.
8. Unscrew the 2 screws.
9. While pressing to shut each hook of the 2 resinous stands,
remove the B/Q-Module.
7.9. Removal of P-Module
1. Remove the power unit (P-Module block) according to the
steps 1 through 7 in the section 7.8. "Removal of B/Q-
Module".
Module".
2. Unscrew the 2 screws.
3. While pressing to shut each hook of the 2 resinous stands,
remove the P-Module.
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PT-LB80NTU / PT-LB80NTE / PT-LB80NTEA / PT-LB80U / PT-LB80E / PT-LB80EA / PT-LB75NTU / PT-LB75NTE / PT-LB75NTEA / PT-LB75U / PT-LB75E / PT-LB75EA
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