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XOCECO LC-42HK56S, Service Manual

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MIAN BOARD

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Summary of Contents for LC-42HK56S

Page 1: ...LCD TELEVISION LC 42HK56S...

Page 2: ...tions Alignment instructions Working principle analysis of the unit Block diagram IC block diagram Wiring diagram Troubleshooting guide Schematic diagram APPENDIX A Assembly list APPENDIX B Exploded V...

Page 3: ...will result 2 5 If any foreign substance such as water liquid metal slices or other matters happens to fall into the module be sure to cut the power off immediately and do not move anything on the mod...

Page 4: ...85 Scope for storage 10 90 2 13 Display of a fixed picture for a long time may result in appearance of picture residue on the screen as commonly called ghost shadow The extent of the residual picture...

Page 5: ...ems and press VOL and VOL to adjust value items press MENU repeatedly to exit 3 1 Initialization Enter factory menu select OPTION and HOTEL OPTION sub menu adjustment of items to see table1 Table1 sub...

Page 6: ...a Input VG 848 signal to HDMI TIMING854 800 600 60Hz of PAT920 8 gray scale signal adjust the balance with CA210 b Enter COLOR TEMP sub menu and select color temperature of standard 9300K the value of...

Page 7: ...erminals Input AV S YPbPr YCbCr HD signals check if it is normal 5 3 VGA terminal Insert VGA terminal input VGA format signal of 640X480 60 Hz and check if the display is normal 5 4 HDMI terminal Inse...

Page 8: ...RGB of SCART1 AV S Y and S C of SCART2 will also be sent to MST9E89DL their audio signal and YPbPr AV S audio signal via audio switch HEF4052BT selection to MST9E89DL The main IC N304 MST9E89DL is a...

Page 9: ...2 C AV S VIDEO TUNER TV V TV SIF AV L R SCART1 V OUT TV L R SCART2 L R OUT AV L R OUT AV OUT CVBS SCART2 V OUT SCART1 L R OUT TV L R LCD TV CONTROLLER MST9E89DL AUDIO SW HEF4052 AUDIO AMP BH3547F PS32...

Page 10: ...eo de interlacers two scaling engines the MStarACE 3 color engine an on screen display controller an 8 bit MCU and a built in output panel interface By use of external frame buffer PIP POP is provided...

Page 11: ...9 2 TDA4470...

Page 12: ...2 can drive stereo speakers as low as 4 The efficiency of the TPA3120D2 eliminates the need for an external heat sink when playing music The gain of the amplifier is controlled by two gain select pins...

Page 13: ...11...

Page 14: ...12 Wiring diagram power board power board panel IR board main board main power output key IR tuner power amplifier power audio output speaker signal signal connection board key board...

Page 15: ...d if interfered possibly by the equipment like transmitting antenna non professional radio station and cellular phone 1 2 TV set Symptoms Possible cause Unable to switch the power on Check to see if t...

Page 16: ...batteries are installed in the reverse order Check if the battery is effective Check the distance or angle from the monitor Check if there is any obstruct between the remote control and the TV set Che...

Page 17: ...of power supply board Press POWER button on the unit or remote sensor control and check the indicator Check if the PIN3 of X401 on main board is high level Check if the PIN11 of X403 in main board is...

Page 18: ...off the TV turn on again display picture Adjust main board again Which channel is no signal Check N304 and its peripery Check if TUNER601 pin11 IF output is normal Check N601 and its periphery no yes...

Page 19: ...heck power board Check the wave of pin 5 6 of N203 Check the wave of N602 pin 24 Check the wave of TUNER601 pin 11 Check N203 and its periphery Check N304 and its periphery Check N602 and its peripher...

Page 20: ...MIAN BOARD...

Page 21: ...MIAN BOARD...

Page 22: ...MIAN BOARD...

Page 23: ...MIAN BOARD...

Page 24: ...MIAN BOARD...

Page 25: ...MIAN BOARD...

Page 26: ...INTERFACE CONNECTION...

Page 27: ...KEY...

Page 28: ...IR BOARD...

Page 29: ...POWER...

Page 30: ...Board 6HK02001A0 N304 N602 N203 MST9E89DL 5270989005 TDK4470MFL 5274470001 TPA3120 D2 5273120001 Key Board 6HE0130510 IR Board 6HK0310910 SCART Transition Board 6FY0064610 Power Board 6HU0422010 Remo...

Page 31: ...APPENDIX B Exploded view LC 42X56...

Page 32: ...cting glass 7 Light conducting column 8 IR baord 9 Panel 10 Panel fixed bracket 11 Power board 12 Power socket 13 Iterface baffle 14 Back cabinet 15 Stand 16 Speaker 17 Decorative bar 18 Key board 19...

Page 33: ...9242HK5612 Ver 1 0...

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