JVC LT-40X776/S
Service Manual

SECTION 3 DISASSEMBLY
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 3.2.8 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.

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)