11 Dissasembly for service
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Back cover
Remove all the screws marked with an arrow (←) from the back of the receiver
NOTE
Screw configuration, type, and number of screws vary depending on the model of the receiver serviced and the application; various models are covered in this manual. Use same hardware when reassembling the receiver.
4 screws at the top edge of the receiver.
4 screw by the A/V jacks.
1 screw by the antenna jacks.
1 screw at the lower part of TV.
1 screw at each lower corner of the receiver.
1 screw by the retainer plate of the AC power cord.
1 screw by the A.C. cord assembly.
Extensions for board connectors may be needed to take voltages on some boards, please see parts list section for part numbers in this service manual.
A-Board - Main chassis
The A-Board assembly rest on a chassis tray along with the D-Board.
Slide chassis tray out. Gently lift the tray and pull out. Disconnect plug connectors; release wire ties and holders as required for complete chassis removal.
A-Board is secured to the chassis tray with screws.
The A-Board is mated to the D-Board by four flexible connectors: A4, A5, A6 & A7 (D4, D5, D6 & D7 on the D-Board, respectively). To remove either boards, unplug the connectors on the A-Board.
Some tie-wraps that secure the wire dressings may need to be unfastened for chassis removal
D-Board - Deflection
The D-Board assembly rest on a chassis tray along with the A-Board.
D-Board is secured to the chassis tray with screws.
The D-Board is mated to the A-Board by four flexible connectors: D4, D5, D6 and D7 (A4, A5, A6 & A7 on the A-Board, respectively). To remove either boards, unplug the connectors on the A-Board.
L-Board - CRT output
Plugs into the socket on the CRT neck.
To remove this board, first unplug the board from the CRT neck, then disconnect L1, L2 and L3 connectors, to disconnect the focus F1(red cable) & F2 (white cable) cables from the CRT socker, pull the tab and release the cables (see figure),finally disconnect the screen cable from the D-Board D16 (screen and heater).
To reinsert back the cables, remember the original position of cables, F1 (red cable) goes to A on the CRT socket and F2 (white cable) goes to B on the CRT socket.
To release screen GND cables from L-Board L10, L11 & L12 connectors, insert a wire in both sides of connector and pull upwards the cable, then remove the wire.
DG-Board
The DG-Board is assembled on the main chassis (A-Board) plugged at the A21, A22 and A23 (DG1, DG2 and DG3 respectively) connectors.
This board is not-serviceable. When removing this board pull carefully.
DV-Board (ONLY FOR HL MODELS)
Plugs onto the A-Board at the A5 (DV1) connectors.
This board has two Grommet squares, be careful to do not screw too tight, otherwise this grommet screw hole will get stripped.
NOTE:
This board is non-serviceable. Except for JK002 (DVI AUDIO CONNECTOR) and JK002 (DVI CONNECTOR) When removing this board pull carefully.
P-Board
Plugs onto the right side of the D-Board at D2, D11, D12 and D3 connectors (P2, P11, P12 and P3 on P-Board, respectively); First remove the screws that holds the metal board, from the flyback and from the chassis tray and then use a flat head screwdriverto release the connector locking tabs and pull upwards the board.
G-Board
Mated to A-Board by three flexible connectors A1, A2, A3 and D40 from D-Board. To remove this board, first unplug the four flexible connectors, then RT1, G4 and G14 connectors, then pull upwards the board while unlock the tabs from the chassis tray.
Speakers
Each speaker is secured to a plastic base with 4 screws, and each plastic base is secured to the from cabinet with two screws. For models including subwoofer speaker is assembled within the backcover of the television set by 4 screws
When reassembling speakers be sure to connect the speaker wires to the correct speaker lead (+) (-)