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CONTENTS

Safety precautions………………………………………………………………………..…

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 view

APPENDIX-C: Removing or installing the stand

APPENDIX-D: Wall mounting

Содержание PDP-42XR7K

Страница 1: ...PDP TV SERVICE MANUAL PDP 42XR7K PRODUCT CODE No REFERENCE No SM0915051 1 682 346 32 PAL SECAM NTSC AV FILE NO PRODUCT CODE No ...

Страница 2: ...ng principle analysis of the unit Block diagram IC block diagram Wiring diagram Troubleshooting guide Schematic diagram APPENDIX A Assembly list APPENDIX B Exploded view APPENDIX C Removing or installing the stand APPENDIX D Wall mounting 1 3 6 7 8 12 13 18 ...

Страница 3: ...heat radiation parts or direct exposure to sunlight Otherwise there will be kickbacks 1 5 In case foreign substances such as water liquid metal slices or others fall into the module carelessly power must be cut off immediately Keep the module as it is and do not move anything on the module Otherwise it might be possible to contact the high voltage or cause shock short circuit so that it may lead t...

Страница 4: ...d for a long time difference in its brightness and color may occur compared with movable pictures But it doesn t show any problem and the reason is that there is reduced density of fluorescent powder in the former On the other hand even if changes take place in the picture it can keep its brightness for a period of time several minutes It s a feature inherent with plasma and it s not abnormal Howe...

Страница 5: ...analyzer 2 Alignment flow chart The alignment flow chart is shown as fig 1 Fig 1 adjustment flow chart 3 Unit adjustments Connect all the boards according to wiring diagram connect with power and observe the display Method for entering factory menu press INPUT 2 5 8 and 0 in turn to enter factory menu press CH and CH to select adjustment items and press VOL and VOL to adjust value items press MENU...

Страница 6: ...DA4470 from BG to LL and input 80dB 33 9MHz SECAM signal adjust RP602 to value 1 65V of TP602 then weld J601 3 2 2 IF AGC adjustment Input 184 25MHz RF signal of 60dB to RF terminal adjust RP601 to value 4V of TP604 and there should be no obvious snowy picture Increase the input signal to 90dBV and it should be no obvious noisy 3 3 White balance adjustment 3 3 1 HDMI white balance adjustment a Inp...

Страница 7: ...onnect J201 again 5 Performance check 5 1 TV function Enter searching menu auto search connect RF TV terminal with central signal source and check if the picture is normal if there are channels be skipped Check TXT and parental control function 5 2 AV S YPbPr terminals 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...

Страница 8: ...L 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 high performance and fully integrated IC which can realize HDMI interface processing video decoding video switch selection A D and D A conversion interlace de interlace processing modes conversion OS...

Страница 9: ...2 Y SCART2 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 PDP TV CONTROLLER MST9E89DL AUDIO SW HEF4052 AUDIO AMP BH3547F PS321 EEPROM FLASH DDR PANEL EAR PHONE EDID 24C02 IF AMP TDA4470 HDCP KEY 2 AMP 4 AMP SAW SPEAKER AUDIO AMP TPA3120D2 EDID 24C02 ...

Страница 10: ...deo 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 for multimedia applications Furthermore 3 Dvideo decoding and processing are fulfilled for high quality TV applications To further reduce system costs the MST9E89DL also integrates intelligent power...

Страница 11: ...9 2 TDA4470 ...

Страница 12: ...2 can drive stereo speakers as low as 4Ω 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 The gain selections are 20 26 32 36 dB The outputs are fully protected against shorts from GND to ROUT or LOUT and output to output shorts with an auto recovery feature ...

Страница 13: ...11 ...

Страница 14: ... Wiring diagram Power board Power board Panel IR board Key board Main board Main power LVDS output Key IR Tuner power Amplifier power Audio output Speaker SCART connection board SCART signal SCART signal ...

Страница 15: ...nd 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 the power plug has been inserted properly into the socket No picture and sound Check to see if the power supply of liquid crystal TV has been switched on As can be indicated by the red LED at the fron...

Страница 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 Check if the remote control signal receiving window is exposed to strong fluorescence No picture and sound but only hash Check if the antenna cable is correctly connected or if it has received the video...

Страница 17: ...wer supply board Press POWER button on the unit or remote controller 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 high level Check power supply board Check the panel LVDS wires or the wires connect panel and power yes no no red blue no yes no yes Check N304 and its periphery Check N304 and its periphery ...

Страница 18: ... off the TV turn on again display picture Adjust main board again Which channel is no signal Check N304 and its periphery Check if TUNER601 pin11 IF output is normal Check N602 and its periphery no yes yes HDMI VGA YPRPB TV yes no yes Does display OSD menu in screen when press menu button yes no yes no Check if there is 1VPP signal or noisy of X405 TP601 on main board no Check TUNER601 and its per...

Страница 19: ... are normal Check 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 periphery Check TUNER601 and its periphery yes no yes yes yes no no no ...

Страница 20: ...L 5274470001 TPA3120 D2 5273120001 SCART connection board XI6HK0304610 Key board XI6HK0300510 Power filter board XI6FK0105110 Power board XI6HU0522010 Remote control XI6010Y06006 Panel XI5205422206 RC Y60 0F PDP42G1 APPENDIX A Main assembly PDP 42XR7K MAIN COMPONENT AND IT S NO ...

Страница 21: ...APPENDIX B Exploded view PDP 42XR7K ...

Страница 22: ...ED VIEW NO DESCRIPTION 1 Right speaker 2 Left speaker 3 Front cabinet 4 Key board 5 Panel 6 Power filter board 7 Power board 8 SCART connection board 9 Main board 10 Back cabinet 11 Stand 12 User manual 13 Remote Control ...

Страница 23: ...5 XI5205422206 Panel 1 LG PDP42G1 6 XI6FK0105110 Power filter board 1 7 XI6HU0522010 Power board 1 8 XI6HK0304610 SCART connection board 1 9 XI6HK0300110 Main board 1 10 XI5HI31LJ01B Back cabinet 1 11 XI6151062500 Stand 1 12 XI5944034370 User manual 1 13 XI6010Y06006 Remote control 1 Only the parts in above list are used for repairing Other parts except the above parts can t be supplied ...

Страница 24: ...ersonnel to ensure successful installation 2 Before performing work spread cushioning over the base area to lay the Display on This will prevent it from being damaged 3 Disconnect the AC power cord firstly M5 screws To install the stand 2 Insert the stand column into the hole in the TV bottom and then secure the stand to the TV with eight M5 screws M5 screws 1 Lay your TV flat screen down on a tab...

Страница 25: ...hould be made from solid materials 4 Do not uplift the speaker when moving the plasma display Frame holder 1piece M8 Expansion bolt 4pcs T4 Wood screw 24pcs Combined Screw 4pcs M4 Screw 2pcs Connector 4pcs Identifying the Following Parts Wall Mounting 2 Note all the wall mounting components are optional and may be unavailable in your model Below we will show you how to mount the plasma display on ...

Страница 26: ...and the wall should not be broken 1 Insert and screw 2pcs M4 screws on each side of the holder Refer to mark in Fig 2 and the depth is about 8mm 2 Fix the Frame Holder on the wall with at least 16pcs T4 wood screws and confirm they are securely fixed and reliable refer to mark in Fig 2 3 Make sure that when the max load to the Frame Holder is larger than 1500 Newton the Holder should not fall down...

Страница 27: ...isplay with 4pcs Combined screws Mounting the Connectors Connector Combined screw Remove the Screws Remove the 4pcs M8 screws on the rear of the display CAUTIONS The direction of the Connectors should be strictly conform to the diagram illustrated Wall Mounting continued 4 ...

Страница 28: ...r calabash shaping holes Insert the wall mounting connectors into the calabash shaping holes let the unit slowly slide down to the end of the calabash shaping holes and be sure the mounting is secure b Tightly screw the left and right M4 screws marked withƒ to prevent the display from falling from the Frame Holder Wall Mounting continued 5 ...

Страница 29: ...Dec 2008 ...

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