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Disassembly - JVC LT-40X776/S Service Manual

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3.1
CAUTION AT DISASSEMBLY
• Be sure to perform the SYSTEM SETTING at the end of the procedure.
• Make sure that the power cord is disconnected from the outlet.
• Pay special attention not to break or damage the parts.
• When removing each board, remove the connectors as required. Taking notes of the connecting points (connector numbers) makes
service procedure manageable.
• Make sure that there is no bent or stain on the connectors before inserting, and firmly insert the connectors.
3.2
DISASSEMBLY PROCEDURE
3.2.1 REMOVING THE STAND (Fig.1)
(1) Remove the 1 screw [A], then remove the STAND COVER.
(2) Remove the 4 screws [B], then remove the STAND.
3.2.2 REMOVING THE REAR COVER (Fig.1)
• Remove the STAND.
(1) Remove the JACK COVER (L/R).
(2) Remove the 10 screws [C], the 3 screws [D], and the 2
screws [E].
(3) Remove the REAR COVER.
3.2.3 REMOVING THE REGULATOR PWB (Fig.1)
• Remove the STAND.
• Remove the REAR COVER.
(1) Remove the 4 screws [F], then remove the FAN
BRACKET.
(2) Remove the 1 screw [G], then remove the POWER CORD
HOLDER.
(3) Remove the POWER CORD from the POWER PWB.
(4) Remove the REGULATOR PWB.
3.2.4 REMOVING THE MAIN POWER PWB (Fig.1)
• Remove the STAND.
• Remove the REAR COVER.
• Remove the FAN BRACKET.
(1) Remove the 4 screw [H], then remove the MAIN POWER
PWB.
3.2.5 REMOVING THE ANALOG SYGNAL PWB (Fig.1)
• Remove the STAND.
• Remove the REAR COVER.
• Remove the FAN BRACKET.
(1) Remove the 6 screws [J], then remove the TERMINAL BASE.
(2) Remove the 5 screws [K], then remove the ANALOG
SIGNAL PWB.
3.2.6 REMOVING THE FRONT CONTROL PWB (Fig.1)
• Remove the STAND.
• Remove the REAR COVER.
(1) Remove the 3 screws [L], then remove the CONTROL
ASSY with the FRONT CONTROL PWB.
(2) Remove the FRONT CONTROL PWB.
3.2.7 REMOVING THE RECEIVER PWB (Fig.1)
• Remove the STAND.
• Remove the REAR COVER.
(1) Remove the 3 screws [M] and the 1 screw [N], then
remove the TUNER BASE.
(2) Remove the 2 screws [P] and the 2 screws [Q], then
remove the TOP SHIELD CASE.
(3) Remove the 2 screws [R], then remove the RECEIVER PWB.
1-10 (No.YA301)
SECTION 3

DISASSEMBLY

3.2.8 REMOVING THE CONNECTOR PWB (Fig.1)
• Remove the STAND.
• Remove the REAR COVER.
• Remove the TOP SHIELD CASE.
(1) Remove the 4 screws [S], then remove the RECEIVER
PWB BRACKET.
(2) Remove the 1 screw [T], then remove the CONNECTOR PWB.
3.2.9 REMOVING THE COOLING FAN (Fig.1)
• Remove the STAND.
• Remove the REAR COVER.
• Remove the TOP SHIELD CASE.
(1) Remove the 5 screws [U] and the 3 screws [V], then
remove the SHIELD COVER with COOLING FAN.
(2) Remove the 2 ribets [W], then the remove the COOLING FAN.
3.2.10 REMOVING THE ATSC TUNER MODULE PWB (Fig.1)
• Remove the STAND.
• Remove the REAR COVER.
• Remove the TUNER BASE.
• Remove the TOP SHIELD CASE.
• Remove the SHIELD COVER.
(1) Remove the 5 screws [X], then remove the DIGITAL
TUNER UNIT.
3.2.11 REMOVING THE DIGITAL SIGNAL PWB (Fig.1)
• Remove the STAND.
• Remove the REAR COVER.
• Remove the TUNER BASE.
• Remove the TOP SHIELD CASE.
• Remove the SHIELD COVER.
• Remove the ATSC TUNER MODULE PWB.
(1) Remove the 3 screws [Y], then remove the DIGITAL
BRACKET.
(2) Remove the DIGITAL SIGNALPWB.
3.2.12 REMOVING THE SD CARD PWB (Fig.1)
• Remove the STAND.
• Remove the REAR COVER.
(1) Remove the 2 screws [Z], then remove the SD CARD PWB.
3.2.13 REMOVING THE SUB POWER PWB (Fig.1)
• Remove the STAND.
• Remove the REAR COVER.
• Remove the FAN BRACKET.
(1) Remove the 2 screws [A'], then remove the SUB POWER
PWB BRACKET with SUB POWER PWB.
(2) Remove the 3 screws [B'], then remove the SUB POWER
PWB.

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