Disassembly - JVC LT-42HB1BU Service Manual

3.1 CAUTION AT DISASSEMBLY
• Make sure that the power cord is disconnected from the outlet.
• Pay special attention not to break or damage the parts.
• Make sure that there is no bent or stain on the connectors before inserting, and firmly insert the connectors.
• Be sure to reattach the wire clamps removed during the procedure to the original positions. (Attaching the wire clamps in wrong
positions may affect the performance.)
REFERENCE:
When removing each board, remove the connector if necessary. The operation is easier if you write down the connection points
(connector numbers) of the connector. For connection of each board, refer to the "WIRING DIAGRAM" of the Standard Circuit
Diagram.
3.2 DISASSEMBLY PROCEDURE
3.2.1 REMOVING THE REAR COVER (Fig.3-1)
(1) Remove the 16 screws [A].
(2) Remove the REAR COVER.
3.2.2 REMOVING THE POWER UNIT (Fig.3-1)
• Remove the REAR COVER.
(1) Remove the 4 screws [B].
(2) Remove the POWER UNIT.
3.2.3 REMOVING THE MAIN PWB (Fig.3-1)
• Remove the REAR COVER.
(1) Remove the 1 screw [C].
(2) Remove the SIDE SHIELD.
(3) Remove the 6 screws [D].
(4) Remove the MAIN PWB.
3.2.4 REMOVING THE KEY PWB (Fig.3-1)
• Remove the REAR COVER.
(1) Remove the 1 screws [E].
(2) Remove the CONTROL BASE and KEY PWB together.
(3) Remove the 2 screws [F].
(4) Remove the KEY PWB from the CONTROL BASE.
3.2.5 REMOVING THE INVERTER PWB (Fig.3-1)
• Remove the REAR COVER.
(1) Remove the 6 screws [G].
(2) Remove the INVERTER PWB COVER.
(3) Remove the INVERTER PWB.
3.2.6 REMOVING THE POWER BRACKET (Fig.3-1)
• Remove the REAR COVER.
(1) Remove the 2 screws [H].
(2) Remove the POWER BRACKET.
3.2.7 REMOVING THE SPEAKER (Fig.3-1)
• Remove the REAR COVER.
(1) Remove the SPEAKER(x2).
1-8 (No.YA707<Rev.001>)
SECTION 3

DISASSEMBLY

3.2.8 REMOVING BACK BRACKET (Fig.3-1)
• Remove the REAR COVER.
(1) Remove the 4 screws [J].
(2) Remove the BACK BRACKET.
3.2.9 REMOVING THE IR PWB (Fig.3-1)
• Remove the REAR COVER.
(1) Remove the 1 screw [K].
(2) Remove the IR PWB.
3.2.10 REMOVING THE STAND (Fig.3-1)
(1) Remove the 4 screws [L].
(2) Remove the STAND.
3.2.11 REMOVING THE LCD CONTROL PWB (Fig.3-1)
• Remove the REAR COVER.
• Remove the STAND.
(1) Remove the 5 screws [L], 2 screws [M] and 5 screws [N].
(2) Remove the MAIN SHIELD.
(3) Remove the 6 screws [P].
(4) Remove the LCD CONTROL PWB.
3.2.12 REMOVING THE LED PWB (Fig.3-1)
• Remove the REAR COVER.
• Remove the STAND.
• Remove the MAIN SHIELD.
(1) Remove the 2 screws [Q] and 2 screws [R].
(2) Remove the BOTTOM FRAME.
(3) Remove the 2screws [S].
(4) Remove the LED PWB.
3.2.13 REMOVING THE LCD PANEL UNIT (Fig.3-1)
• Remove the REAR COVER.
• Remove the STAND.
• Remove the MAIN SHIELD.
• Remove the BOTTOM FRAME.
• Remove the IR PWBand PANEL BRACKET together.
(1) Remove the 3 screws [T].
(2) Remove the PANEL BRACKET(x3).
(3) Remove the LCD PANEL UNIT.