10 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.
screws by the A/V cover.
1 screw at the lower part of TV.
1 screw at each lower corner of the receiver.
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 flexible connectors and to G-Board: A6, A7 & A8 (D6, D7 & D8 on the D-Board, respectively) and A1, A2 & A3 (G1, G2 & G3). To remove either boards, unplug the connectorson 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 and G-Board by flexible connectors: D6, D7 & D8 (A6, A7 & A7 on the A-Board, respectively) and D9 (G40 on the G-Board). To remove either boards, unplug the connectors.
Some tie-wraps that secure the wire dressings may need to be unfastened for chassis removal
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).Disconnect L10, L11, L12, L14 & L15 by inserting a wire in both holes then pull the cable out.
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.
DG-Board
The DG-Board is assembled on the main chassis (A-Board) plugged at the A13 and A14 (DG3 and DG4 respectively) connectors.
This board is not-serviceable. When removing this board pull carefully.
DF-Board
Plugs onto the right side of the D-Board at D14 and D16 connectors (P2, P11, P12 and P3 on P-Board, respectively); First remove the screw 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 D9 from D-Board. To remove this board, first unplug the flexible connectors, then RT1 and G5 connectors, then pull upwards the board while unlock the tabs from the chassis tray.
Buttons assembly
This assembly is hold with two screws to the front cabinet. To remove, pull out the chassis and remove the two screws from each side of the assembly.
Speakers
Each speaker is secured to a plastic base with 4 screws, and the plastic base is secured to the from cabinet with three screws. To remove the small speaker from the plastic base, unscrew the four screws; To remove the bigger speaker, disassemblythe plastic base by removing the five screws from the back of the plastic base.
When reassembling speakers be sure to connect the speaker wires to the correct speaker lead (+) (-)