Sanyo LCD-26XR7 Service Manual Download Page 1

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FILE NO.

LCD-26XR7

PRODUCT CODE No.
1 682 343 90: PAL/SECAM
1 682 343 91: SANYO India

LCD-32XR7

PRODUCT CODE No.
1 682 343 93: PAL/SECAM
1 682 344 13: SANYO India

REFERENCE No.:SM0915008

SERVICE MANUAL

LCD TV

Summary of Contents for LCD-26XR7

Page 1: ...FILE NO LCD 26XR7 PRODUCT CODE No 1 682 343 90 PAL SECAM 1 682 343 91 SANYO India LCD 32XR7 PRODUCT CODE No 1 682 343 93 PAL SECAM 1 682 344 13 SANYO India REFERENCE No SM0915008 SERVICE MANUAL LCD TV ...

Page 2: ...instructions Adjustment instruction working principle analysis block diagram IC block diagram Wiring diagram Troubleshooting guide Schematic diagram APPENDIX A Assembly list APPENDIX B Exploded view 1 3 6 7 8 12 13 20 ...

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 module lest it should cause fire or electric shock due to contact with the high voltage or short circuit 2 6 Should there be smoke abnormal smell or sound from the module please shut the power off at on...

Page 4: ...0 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 varies with the maker of LCD screen This phenomenon doesn t represent failure This ghost shadow may remain in the picture for a period of time several minutes But when operating it please avoid disp...

Page 5: ... press MENU continuously to exit 3 1 Initialization Enter factory menu select OPTION and HOTEL OPTION sub menu adjustment of items to see table1 Table1 sub menu adjustment Items Preset Introduce HOTEL 0 1 HOTEL OPTION of factory menu is optional 0 HOTEL OPTION of factory menu is not optional LOGO 1 1 display LOGO in no signal or turn on 0 no LOGO display ADC PRESCALE 00A Adjust according different...

Page 6: ...h level gray scale signal of PAT920 Use color analyzer CA210 to adjust white balance b Enter submenu of COLOR TEMP Select 9300k of color temperature c Fixed value of B GAIN adjust R GAIN and G GAIN let the color coordinate of the seventh level be 285 and 293 Fixed value of B OFF adjust R OFF and G OFF let the color coordinate of second level be 285 and 293 and the brightness be about 3nit 10nit Ad...

Page 7: ...al Insert VGA terminal input VGA format signal of 640X480 60 Hz and check if the display is normal 5 4 HDMI terminal Insert HDMI terminal input signal of 640 X 480 60 Hz signal and check if the display is normal 5 5 check sound channel Check the speaker and headphone of each channel 5 6 RS232 terminal Insert earphone to COM terminal and check if the long distance control function is normal 5 7 oth...

Page 8: ...hem via audio switch N302 HEF4052BT selection after also sent to MST9E88L The main IC NS4 MST9E88L is a high performance and fully integrated IC which can realize HDMI processing video demodulating video switch selection A D and D A conversion interlace de interlace processing modes conversion OSD and low voltage differential output ect And it also has functions of audio selection processing and M...

Page 9: ... AV L R SCART1 V OUT TV IIS SCART2 L R OUT SCART2 V OUT CVBS SCART1 L R OUT TV L R HDTV SW PI5V330 LCD TV CONTROLLER MST9X88LD AUDIO SW HEF4052 HP AMP BH3547F AUDIO AMP MP7722 HEAD PHONE EDID 24C02 EEPROM FLASH DDR PANEL SPEAKER EDID 24C02 D A CS4334 IF AMP TDA4470 HDCP KEY POWER MEG ATMEG8L AUDIO SW HEF4052 2 AMP 2 AMP SAW Block diagram ...

Page 10: ... video and audio decoder a video de interlacer a scaling engine the MStarACE 3 color engine an on screen display controller an 8 bit MCU and a built in output panel interface With external frame buffer 3 D video decoding and processing are fulfilled for high quality TV applications To further reduce system costs the MST9E88L also integrates intelligent power management control capability for green...

Page 11: ...up Shutdown pop elimination Short circuit protection Mute Standby The MP7722 utilizes a single ended output structure capable of delivering 2 x 20W into 4Ωspeakers MPS Class D Audio Amplifiers exhibit the high fidelity of a Class A B amplifier at efficiencies greater than 90 The circuit is based on the MPS proprietary variable frequency topology that delivers low distortion fast response time and ...

Page 12: ...10 ...

Page 13: ... for multi standard video sound IF VIF SIF signal processing in TV VCR and multimedia applications The circuit processed all TV video IF signals with negative modulation e g B G standard positive modulation e g L standard and the AM FM NICAM sound IF signals ...

Page 14: ...12 ...

Page 15: ...IF adjust Wiring diagram 13 ...

Page 16: ...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...

Page 17: ... 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...

Page 18: ...mm 10mm 5mm Total defected point 8 7 5 4 Notes 1 Definition of defected point bright spot dark spot It is identified as a defected point if its area exceeds 1 2 of a single picture element R G B 2 Definition of bright spot It is identified as a bright spot if it is bright in the state of dark field and its bright size remains unchanged 3 Definition of dark spot It is identified as a dark spot if i...

Page 19: ...heck STANDBY circuit of power supply board Press POWER button in the unit or sensor control and check the indicator Check if the PIN12 of X301 in main board is high level Check if the PIN11 of X303 in main board is high level Check power supply board Check back light board yes no no red blue no yes Replace NS4 no yes Check N102 and its peripheral circuit ...

Page 20: ...TV turn on again display picture Adjust main board again Which is no signal of channels Replace main board Check if 1VPP signal and noise wave of X405 PIN 8 in the TV board Check if output IF signal of TUNER401 pin 11 is normal Check TUNER401 and its periphery Check N404 and its periphery no yes yes HDMI VGA YPRPB TV yes no no no yes Does display OSD menu in screen when press menu button yes no ye...

Page 21: ...rmal Check power supply Check PIN3 and PIN7 output wave of N405 Check PIN24 wave of N404 Check PIN11 wave of TUNER401 Check TUNER401 and its periphery Check N405 and its periphery Check NS4 and its periphery Check N404 and its periphery no yes no yes yes yes no no ...

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Page 26: ...interface connector ...

Page 27: ...KEY board ...

Page 28: ...IR receiver board ...

Page 29: ...TV board ...

Page 30: ...26 power board ...

Page 31: ...power board 32HU25 20 ...

Page 32: ...el XI5203265501 NAME NO Analog board XI6HU0495310 N404 N405 TDA4470 5274470001 MP7722DF 5277722001 Main board XI6HU04901S0 NS4 MST9E88 5270988002 Interface board XI6HU0212910 Key board XI6HU0230510 IR receiver board XI6FW0050910 Power board XI6HU0212010 Remote control XI6010Y03507 Panel XI5203325506 RC Y35 0F V320B1 L04 MAIN COMPONENT AND IT S NO RC Y35 0F V260B1 L01 L02 APPENDIX A Main assembly L...

Page 33: ...APPENDIX Exploded view LCD 26XR7 ...

Page 34: ...Screen 3 Power board 4 Main board 5 Key board 6 Back cabinet 7 Stand 8 Speaker 9 Analog board 10 Trans connecting board 11 Power swtich 12 Infrared receiving board 13 User manual 14 Remote Control PART LIST OF EXPLODED VIEW LCD 26XR7 ...

Page 35: ...S 0 Main Board 1 5 XI6HU0230510 1 6 XI5HX32WH03A 1 7 XI6170699030 S peaker Bottom 1 8 XI6151078830 S tand 1 9 XI6HU0212910 Trans Connecting Board 1 10 XI6HU0495310 Analog Board 1 11 XI6HU0162010 Power Board 1 12 XI5293000042 Power S witch 1 13 XI5944029010 User Manual 1 14 XI6010Y03507 R emote Control 1 Aug 07 LCD 26XR7 Front Cover Infrared R eceiving Board S creen Key Board Back Cabinet ver 1 0 C...

Page 36: ...LCD 32XR7 ...

Page 37: ...Infrared receiving board 3 Screen 4 Main board 5 Key board 6 Back cabinet 7 Speaker 8 Stand 9 Trans connecting board 10 Analog board 11 Power board 12 Power swtich 13 User manual 14 Remote Control PART LIST OF EXPLODED VIEW LCD 32XR7 ...

Page 38: ...01S 0 Main Board 1 5 XI6HU0230510 1 6 XI5HG32WH02A 1 7 XI6170658030 S peaker Bottom 1 8 XI6151077740 S tand 1 9 XI6HU0212910 Trans Connecting Board 1 10 XI6HU0495310 Analog Board 1 11 XI6HU0212010 Power Board 1 12 XI5293000042 Power S witch 1 13 XI5944029070 User Manual 1 14 XI6010Y03507 R emote Control 1 Aug 07 LCD 32XR7 Front Cover Infrared R eceiving Board S creen Key Board Back Cabinet ver 1 0...

Page 39: ...Jun 2007 30 CPS ...

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