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Sanyo LCD-24XR12F, Service Manual

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Sanyo LCD-24XR12F Service Manual Download Page 23

 

2

．

No picture, but backlight is normal:   

 

 
 Yes 

Yes 

 
 

 

 No 
 No 

 

 

 

            Yes              TV 

 

 

 

有

 

 

 

  

 

No 

 

 

                          No 
 

 

Yes 

 

                               

                                                                                 

                               

 
 
 

 

 

 

 

 

 

 

 

 

 

 
 

 

 

 

 

 

 

 

 
 
 
 
 
 
 
 
 
 
 
 
 

Can control the TV set 
by keys on remote 
control or the unit?

 

Do no channel 
have picture at 
all? 

Enter into factory menu to initialize 
EEPROM, then cut off main power 
and then turn on the TV set again, 
check if there is picture? 

Replace the main 
board 

Readjust the 
main board. 

Press key MENU, 
can OSD display 
normally? 

Summary of Contents for LCD-24XR12F

Page 1: ...2 351 87 PAL B G Australia FILE NO PRODUCT CODE No REFERENCE No SM0915219 LCD 24XR12F NTSC AV LCD TV EPG MENU MUTE LIST RECALL EXIT INPUT VOL CH STEREO TTX INDEX SUBTITLE 1 7 4 2 8 5 0 3 9 6 ZOOM TV RADIO OK INFO FAV LIST Q TOOL FRZ MIX ...

Page 2: ...upgrade instructions Working principle analysis Block diagram IC block diagram Wiring diagram Troubleshooting flow chart Schematic diagram APPENDIX A Assembly list APPENDIX B Exploded View 3 5 12 15 17 18 21 22 25 Assembling the Stand WALL MOUNTING INSTRUCTIONS ...

Page 3: ... 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 contact with the high voltage or short circuit 2 6 Should there be smoke abnormal smell or sound from the module please shut the powe...

Page 4: ...n range 20 80 Storage range 10 90 2 13 Display of a fixed picture for a long time may cause a permanent after image on the screen as commonly called ghost shadow The degree of the after image 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 displaying sti...

Page 5: ...ts Multimeter or oscilloscope VG 849 CA 210 USB storage device DVD HDMI 1 4 supported or equipments with the same functions 3 Adjustment Processes 3 1 Power voltage checking According to the wiring diagram specified by Product Specification connect power board assembly data processing assembly IR Key board assembly backlight board assembly correctly supply with power press button to power on the T...

Page 6: ...ponent signal check YPbPr functions Input D SUB signal check display and all functions such as analog parameter H V center etc Check AV input output and relevant functions Default settings before ex factory Check USB multimedia port and Check accessory and packing Check other functions Radio LCN HDMI ARC CEC OAD etc 4 Adjustment Instruction 4 1 The unit adjustment 4 1 1 According to the wiring dia...

Page 7: ...date to be used for software updating from USB port when U disk with updating software is inserted into USB port choose the item to perform updating process n Factory menu item Other Settings include settings of EEPROM Init MEMC Update Power mode MST DEBUG ISP MODE Backlight SSC NONLINEAR Video Quality Audio Quality Light Sensor Overscan etc no need any adjustment normally o Factory menu item Ship...

Page 8: ...0i Pattern 921 16 step Gray move cursor to item MODE press keys and to choose item HDMI then move cursor to item TEMPERTURE and press keys and to choose NORMAL e Fix G GAIN adjust R GAIN B GAIN to set 14th chromatic coordinates as 285 293 f Fix G OFFSET adjust R OFFSET B OFFSET to set 4th chromatic coordinates as 285 293 g To make sure chromatic coordinates of bright scale are X 285 10 Y 293 10 an...

Page 9: ...y 5 2 AV port Input AV signal with formats listed as Table 1 separately check picture sound and other functions Table 1 AV video signal formats No Lines per frame H Freq kHz V Freq Hz Note 1 525 15 734 15 75 59 94 60 NTSC NTSC4 43 PAL60 PAL M 2 625 15 625 50 PAL PAL N SECAM 5 3 Component port Input Component signal from VG 849 with formats listed as Table 2 separately check picture and sound in th...

Page 10: ...768 60 023 75 029 78 75 VESA 12 1152 864 67 5 75 108 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 Panel National only 18 1680 1050 65 3 60 146 25 WSXGA Panel National only 19 1920 1080 67 5 60 148 5 5 5 HDMI port HDMI port supports all signal formats supported by Component port Table 2 and...

Page 11: ...ort from audio output equipment check audio output is normal or not 5 8 Other functions check a Check timing on off sleeping time off picture sound mode OSD stereo digital audio port etc b Check pure digital audio programs RADIO c Check logical channel number LCN d Check HDMI ARC e Check HDMI CEC f Check OAD for special customer 6 User Menu Setting before shipment Enter into Factory Menu and choos...

Page 12: ...on Config is ticked off during software upgrading and reset write protection after ALL 100 upgrading software is opened each time Note 2 Upgrading method with ISP upgrading instrument 1 Main board upgrading connect 4 core line of ISP to Debug port X603 on main board The Unit upgrading connect both VGA ports of ISP and main board enter into factory menu and set ISP Mode as ON 2 Use Mstar upgrading ...

Page 13: ...he first menu Device and choose MX25L64 manually then press Connect 4 Press Read choose upgrading file such as MERGE bin please refer to Fig 4 Fig 4 Choosing upgrading file 5 Press Auto tick off All chip program and other necessary options please refer to Fig 5 Fig 5 Options ...

Page 14: ...d 6 need repeat Note 3 Upgrading with USB 1 Make sure U disk is formatted as FAT32 2 Copy software file named as Merge bin to U disk 3 Turn on the TV set then insert U disk in USB port of the unit a First press key INPUT then press keys 2 5 8 0 in turn to enter into primary factory menu b Choose USB SW Update to begin upgrading 4 Upgrading processes A Read data from U disk while data indicator lig...

Page 15: ...r then LVDS signal is outputted to drive display panel Audio channel demultiplexing digital audio signal is processed by MSD309PX decoder and audio processor then double sound track analog audio signal stereo is outputted to MSD309PX to be processed by preamplifier acoustic effect processor and volume controller to get two parts of signals the analog part of signal is sent to earphone amplifier MA...

Page 16: ...w HDMI video signal is inputted to main chip MSD309PX to be processed by video decoder video processor and zoom controller then LVDS signal is outputted to drive display panel HDMI audio signal is sent to main chip MSD309PX to be processed by audio decoder pre amplifier acoustic effect processor and volume controller to get two parts of signals the analog part of signal is sent to earphone power a...

Page 17: ... MSD309PX LF VIF SIF HDMI1 w ARC HDMI2 VGA YPbPr Video In YPbPr Audio In VGA Audio Ｍｕｓｉｃ In SPDIF IN AV Audio In USB Only for service ＡＰＡ３１６０ Audio Amplfier I2S LVDS DDR2 512Mbit X 2PCS Flash IR KEY POWER SUPPLY Block Diagram ...

Page 18: ...Intermediate Frequency IF which is then sampled by an internal high resolution analog to digital converter A D for further processing The IF signals are filtered using a standard dependent high rejection channel filter and converted to a user programmable output frequency At the output of the D A converter the TV signal is low pass filtered using a high performance smoothing filter and input to a ...

Page 19: ...l audio processor to convert the audio data becomes the stereo Class D output speaker amplifier This provides the seamless integration between the codec and the speaker amplifier The APA3160 is a slave device receiving clocks from external source and the Class D s PWM switching frequency is 352 8kHz for the sampling rate 44 1kHz or 384kHz for sampling 48kHz depend on the input signal s sampling ra...

Page 20: ...citors required by conventional single supply headphone amplifiers The MAX9820 features an undervoltage lockout that prevents over discharging of the battery During brownout conditions click and pop suppression that eliminates audible transients on startup a low power shutdown mode and thermal overload and short circuit protection Additionally the MAX9820 suppresses RF radiation received by input ...

Page 21: ...Main Board Ke y IR AMP Power LVDS Key Board IR Board Panel TCON Panel X601 X501 X504 X602 X308 X606 X605 X603 Debug X604 To Panel Inverter Socket Power I nverter Board Wiring Diagram ...

Page 22: ...ck backlight board Check STANDBY circuits on power board Press key POWER on remote control or the unit check indicator Check if level of X601 PIN13 on main board is high Check if level of X601 PIN9 on main board is high Check power board Check if 5V is supplied to X601 PIN11 Check power control circuits on main board Check power control circuits on main board ...

Page 23: ...set by keys on remote control or the unit Do no channel have picture at all Enter into factory menu to initialize EEPROM then cut off main power and then turn on the TV set again check if there is picture Replace the main board Readjust the main board Press key MENU can OSD display normally ...

Page 24: ...19 25 are all high Check if level of V609 b is low Check if there is signal inputted to N606 PIN15 20 21 22 Check power voltage of N606 Check IIS signal input circuits on main board Check Reset Mute circuits of power amplifier Replace V609 Check 12V on power board Check IIC signal of N606 PIN23 24 ...

Page 25: ...28 A_DQ12 B13 PAD_IO 16 A_DQ13 B17 PAD_IO 27 A_DQ14 C15 PAD_IO 20 A_DQ15 A16 PAD_IO 23 A_DQS0 C16 PAD_IO 24 A_DQS0B A15 PAD_IO 21 A_DQS1 B15 PAD_IO 22 A_DQS1B B16 PAD_IO 26 A_DQM0 C17 PAD_IO 25 A_DQM1 C12 PAD_IO 12 A_MCLK B11 PAD_IO 10 A_MCLKZ C21 PAD_IO 37 A_CKE B20 PAD_IO 36 A_WEZ B10 PAD_IO 9 A_RASZ A10 PAD_IO 7 A_CASZ A21 PAD_IO 39 A_BA0 B21 PAD_IO 38 A_BA1 C22 PAD_IO 40 A_BA2 C11 PAD_IO 11 A_...

Page 26: ..._DE R232 100 R229 100K 3 3V_DE TS_VAL G201 30 400MHz R231 100 C201 100n R224 4 7K R218 100K R201 33 R204 232 C207 1u R205 1M R213 100K 3 3VA_DE 3 3V_DE C212 100n 3 3V_DE R228 100K 3 3V_DE C204 100n 1 2V_DE IFAGC_D C233 100n L206 SGMI2012 2R2KT 3 3V_DE C241 100n C223 10u C237 100n C250 10u C252 100n C235 100n C247 100n 1 2V_DE C231 100n C244 100n L203 STBH2012 221PT C232 10u C260 100n 3 3VA_DE C238...

Page 27: ... 5V HDMI3 X303 HDMI 18 11 4 17 7 14 3 2 10 13 6 19 9 1 16 5 12 15 8 5V HDMI1 C311 100n 5V HDMI1 HDMI1 RX2 001 E4 100 R371 R372 100 GND D GND D 22K R382 R380 22K R393 5 1 R394 5 1 5V USB R322 12K R320 12K R325 39K R330 39K GND D C315 1u 10V C313 1u 10V GND D R319 4 7K R326 4 7K GND D R 3 0 8 4 7 K 12V R321 1K 5V N302 CAT24C02WI 1 A0 2 A1 3 A2 4 Vss 5 SDA 6 SCL 7 WP 8 Vcc D302 CD4148WP D303 CD4148WP...

Page 28: ... VDDC1 2V_7 H20 DVDD_MIUA J21 AVDD1P2 M8 AVDD2P5_ADC M9 AVDD2P5_ADC N8 AVDD25_REF N9 AVDD25_REF R9 AVDD_AU25 P8 AVDD25_MOD P9 AVDD25_MOD T8 AVDD25_PGA U8 AVSS_PGA E9 AVDD_DVI_E9 AVDD_DVI E10 AVDD_DVI F9 AVDD_DVI G10 AVDD_DMPLL H9 AVDD3P3_ADC H10 AVDD3P3_ADC K9 AVDD_AU33 J9 AVDD_EAR33 E19 VDDP F19 VDDP G18 AVDD_LPLL_MEMPLL E17 AVDD_DDRA_E17 E18 AVDD_DDRA_E18 F17 AVDD_DDRA_F17 F18 AVDD_DDRA_F18 G17 ...

Page 29: ...Power board ...

Page 30: ...Backlight board ...

Page 31: ...ard XI6KI0340110 N101 N104 N107 N106 N205 N606 MSD309PX LF SV 5270309003 NT5TU32M16DG_AC 5273216001 APX810 29SAG 7 5270810002 XC5200C 5275200002 APA3160 5273160001 IR board XI635KI02801 Key board XI635KI02800 Power board XI6KI0342010 Remote control XI6011300401 RC 1304 0A Panel XI5203248501 V236H1 L01 ...

Page 32: ...APPENDIX B Exploded view LCD 24XR12F ...

Page 33: ...assembly 7 Board bracket up 8 Board bracket down 9 Data processing assembly 10 Wire fixed slice 11 Interface baffle right 12 Interface baffle down 13 Back cover assembly 14 Standing pole 15 Pedestal assembly 16 Wall mounting bracket 17 Steel pole 18 Power socket bracket 19 Key board assembly Note Design and specification are subject to change without notice ...

Page 34: ...0340110 Data processing assembly 1 10 XI59A5001300 Wire fixed slice 2 11 XI5810L72610 Interface baffle right 1 12 XI5810P73000 Interface baffle down 1 13 XI672470I040 Back cover assembly 1 14 XI58D003061A Standing pole 1 15 XI6151211050 Pedestal assembly 1 16 XI58B004300B Wall mounting bracket 4 17 XI58D0C27000 Steel pole 4 18 XI58B0045410 Power socket bracket 1 19 XI635KI02800 Key board assembly ...

Page 35: ...her flat surface If you intend to mount your TV on a wall or other vertical surface you must remove the stand column If the stand is provided please read these instructions thoroughly before attempting this installation NOTE The appearance of this product in these illustrations may differ from your actual product and is for comparative purposes only To remove the stand from the TV just detach the ...

Page 36: ...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 37: ...April 2012 ...

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