Sanyo LCD-22XR9DA Service Manual Download Page 31 | Manualshive

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background image

2.2. Backlight, but no picture

Check if the unit button

and remote control

operation?

Check if all channels

have no signal?

Replace

main board

Enter factory-menu,

initialization EEPROM,

then turn off the TV,

turn on again, display

picture?

Replace main

board

yes

no

yes

Does display OSD

menu on screen when

press menu button?

Adjust main board

again

yes

no

no

no

yes

29

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Summary of Contents for LCD-22XR9DA

Page 1: ...REFERENCE No SM0915064 FILE NO SERVICE MANUAL LCD TV LCD 22XR9DA Product code 1 682 346 35 LCD 22XR9DA B Product code 1 682 350 05 ...

Page 2: ...instructions Method of software upgrading 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 1 3 8 12 13 14 25 26 31 ...

Page 3: ...ent such as wet bathroom laundry kitchen or nearby fire source heating equipment and devices or exposure to sunlight etc Otherwise bad effect 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 con...

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 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 displ...

Page 5: ...nment flow chart The alignment flow chart is shown as fig 1 Check if EDIT HDCP KEY FLASH are written Combined test for general assembly White balance adjustment Connect to the center signal source and check each function of TV station leaking analog control etc check the output of earphone and speaker Input AV signal and check the function Input Component signal and check the function of YPbPr Inp...

Page 6: ...ata after this item is confirm the unit will restart and display the guiding image m FACTORYDATAREST factory data initialization including white balance adjustment ADC correction and other adjusted data n FACEORY Channel PRESET preset the factory channel please connect to the center signal source when operating the present digital frequency is CH28 529 5MHz CH33 564 5MHz for Australia if the signa...

Page 7: ...ent steps Before the white balance adjustment please let the unit working at least 30 minutes and at a stable situation use BBY channel of the white balancer CA 210 19 for example a Switch to HDMI channel b Press SOURCE then press 2 5 8 0 in turn to enter the level one factory menu c Move the cursor to W B ADJUST and press OK to enter the sub menu d Input HDMI signal VG 848 Timing 856 1024X768 60H...

Page 8: ...omponent signal VG 848 signal generator separately input the Component signals listed in table2 and check if the display and sound are normal at any situation power on channel switch and format switch etc Table2 Component signal format No Resolution H frequecny kHz V frequecny kHz Point clock pulse frequecny MHz Note 1 72 480 15 734 60 13 5 480i NTSC 2 720 480 15 734 59 94 13 5 480i NTSC 3 720 576...

Page 9: ...VESA 13 1280 960 60 60 108 VESA 14 1280 1024 63 98 60 02 108 VESA 15 1280 1024 80 75 135 SXGA 16 1360 768 47 7 60 85 5 WXGA 17 1440 900 55 9 60 106 5 WXGA 18 1400 1050 65 22 60 122 61 SXGA 19 1680 1050 65 3 60 146 25 WSXGA 5 5 HDMI terminal Input HDMI signal VG 849 signal generator separately input the signals listed in table2 and table3 and check the display and sound 32KHz 44 1KHz 48KHz at any s...

Page 10: ...2002 AT24C02 HDMI EDID Yes N206 5272402002 AT24C02 VGA EDID Yes Written with instrument like ALL11 Note write protect setting enter ALL 100 interface select Config and press config setting set Protect to All Protect select config when burning The write protect will be set again when ALL 100 program restart Method of software upgrading Install FTC100103 MSTAR before writing Using Mstar writing tool...

Page 11: ...Fig2 2 Open the tool and click Device and select EN25B32 or corresponding type Fig3 3 Click Read and select the file written MERGE bin for example as shown in fig4 9 ...

Page 12: ...Fig4 4 Click Auto select All chip and programme and click Run to begin writing Fig5 10 ...

Page 13: ...g finishes soon and begins to Programing that means Flash hasn t been erased please press Stop then press Run 5 If the process of writing succeeds it will display Pass near Run otherwise it is fault and needs writing again Fig7 11 ...

Page 14: ...erposition at last output LVDS drive level for panel display HD audio signal via decoder built in MSD119 resumed to multi channel sound of Dolby AC 3 The audio signal will be sent to back end to perform bass adjustment and volume control then it will separate into L R channels and input to operational amplifier AZ4558 amplifying another way will be sent to class AB sound amplifier TDA7266SA amplif...

Page 15: ...ia decoder built in MSD119 is fed to back end to bass adjust and volume control the sound signal will separate into L R channels and input to operational amplifier AZ4558 amplifying another will be sent to class AB sound amplifier TDA7266SA amplifying then sent to speaker Block diagram 13 ...

Page 16: ...IC block diagram 1 MSD119CL LF 14 ...

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Page 23: ...ti standard sound processor Supports BTSC A2 EIA J demodulation in NTSC and A2 NICAM FM AM demodulation in PAL Supports MTS Mode MONO STEREO SAP in BTSC EIA J and MONO STEREO DUAL in A2 NICAM Digital Audio Interface Analog RGB Compliant YUV input Ports Two analog ports support up to 1080P Supports PC RGB input up to SXGA 75Hz Supports HDTV RGB YPbPr YCbCr Supports Composite Sync and SOG Sync on Gr...

Page 24: ...l data processing 3 D video noise reduction Output Interface Supports up to 10 bit dual LVDS full HD 1920 x 1080 panel interface Video output port Supports CVBS S video bypass output Built in video encoder for encoding digital video into CVBS output Miscellaneous USB 2 0 port can be connected to the external equipment for software upgrading 2 CE6353 The chip comprises 8MHz bandwidth SAW and suppor...

Page 25: ... VIF frequency corresponds to 38 9MHz SIF frequency corresponds to M N B G I D K and SECAM L L I2CBUS control 4 TDA7266SA The TDA7266SA is a dual bridge amplifier 23 ...

Page 26: ...24 ...

Page 27: ...Wiring diagram Digital board Power Wisdom light Speaker Key IR Debug Power for backlight board IR board Key board Speaker Panel Power switch 25 ...

Page 28: ...erfered by other equipment and 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 z Check to see if the power plug has been inserted properly into the socket No picture and sound z Check to see if the power supply of liquid crystal TV has been switched on As can be indi...

Page 29: ...properly z Check if the batteries are installed in the reverse order z Check if the battery is effective z Check the distance or angle from the monitor z Check if there is any obstruct between the remote control and the TV set z Check if the remote control signal receiving window is exposed to strong fluorescence No picture and sound but only hash z Check if the antenna cable is correctly connecte...

Page 30: ...is normal Check STANDBY circuit of power supply board Press POWER button on the unit or sensor control and check the indicator Check if the PIN13 of X401 on main board is high level Check if the PIN1 of X401 on main board is low level Check back light board yes no Check the backlight control circuit blue red yes no no yes Check power supply board 28 ...

Page 31: ...ion Check if all channels have no signal Replace main board Enter factory menu initialization EEPROM then turn off the TV turn on again display picture Replace main board yes no yes Does display OSD menu on screen when press menu button Adjust main board again yes no no no yes 29 ...

Page 32: ...voltage Check if V406 base is low voltage Replace N214 Check the wave of N101 pin76 77 Replace N214 Replace V406 yes no Replace V408 yes no Replace N101 Check if V408 base is low voltage Check the wave of PIN4 12 of N408 Replace N408 yes yes no no yes yes 30 ...

Page 33: ...main chip memory 1 11 ...

Page 34: ...video audio interface 2 11 ...

Page 35: ...RF receiving 3 11 ...

Page 36: ...non video audio interface 4 11 IR board key board key board IR board key board IR board ...

Page 37: ...power board 5 11 ...

Page 38: ...backlight board 6 11 backlight board backlight board ...

Page 39: ...power with dual lamp tube for backlight board 7 11 ...

Page 40: ...power with four lamp tube for backlight board 8 11 ...

Page 41: ...T CON board 9 11 ...

Page 42: ...power 10 11 ...

Page 43: ...backlight 11 11 ...

Page 44: ...9002 R2A10406NP 5271040601 CE6353 5276353001 TDA7266SA 5267266001 IR board XI6HE0350910 Key board XI6HE0330510 Power back light board XI6HE0352010 Remote control XI6010J017A1 Panel XI5203225201 APPENDIX A Main assembly LCD 22XR9DA MAIN COMPONENT AND IT S NO RC J17 0A CLAA216WA01 ...

Page 45: ...APPENDIX B Exploded view LCD 22XR9DA ...

Page 46: ... OF EXPLODED VIEW NO DESCRIPTION 1 Front cabinet 2 Panel 3 Data processing board 4 Power back light board 5 Back cabinet 6 Stand column 7 Stand 8 Key board 9 Speaker 10 IR board 11 User manual 12 Remote Control ...

Page 47: ... 1 4 XI6HE0352010 Power back light board 1 5 XI5H2246K01A Back cabinet 1 6 XI6156090800 Stand column 1 7 XI6151201000 Stand 1 8 XI6HE0330510 Key board 1 9 XI6170809000 Speaker 1 10 XI6HE0350910 IR board 1 11 XI5944035540 User manual 1 12 XI6010J017A1 Remote Control 1 Only the parts in above list are used for repairing Other parts except the above parts can t be supplied ...

Page 48: ...ng to prevent accidental scratching or damage to the unit s finish 4 The speaker is not intended to support the weight of this display Do not move or handle this product from the speaker which can cause damage to the display not covered under the manufacturer s warranty Place the stand on the table hold the display upright and aim the bottom stand column toward the stand groove then carefully push...

Page 49: ...e without notice Detaching the stand column 1 Place carefully the display on its front side with a soft cushion below shake the stand forward or backward to adjust angle between the stand and the display let the angle 90 If wall mounting please detach the stand column Place carefully the display on its front side with a soft cushion below loosen and remove 4 pcs screws detach the stand column 9 0 ...

Page 50: ...e sure to ask an authorized service personnel to carry out setup 2 Thoroughly read this instruction before setup and follow the steps below precisely 3 The wall to be mounted should be made from solid materials Only use accessories supplied by the manufacturer 4 Very carefully handle the unit during setup We are not liable for any damage or injury caused by mishandling or improper installation 5 B...

Page 51: ...June 2009 ...

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