LCD TV SERVICE MANUAL LCD
Contents
1. 8 a 5 lt z 7 9000 8 n a 7799 s E Sh E Zo m me t S S A007 D Ly D 5 ny 6 0769 8 65 0 CO 2 9 6 e F 0S7 O 1 6059 90007 8080 T ote IE 1069 OL Ot ww X 90 V az eo 43 G 8 gt ET 9 7 flo 3Q Il 885 Y Y A 865 8 85 A0Se Wel NT 2 V VE iy 58 APPENDIX A Main assembly LCD 32XR8K NAME NO MAINCOMPONENTANDITS NO TDA4470MFL 5274470001 Main board XI6HUO2101E0 NV4 R2S15102 5271510201 NS2 MST9E19B 5270919002 IR board Key board Power board APPENDIX B Exploded view LCD 32XR8K 2 2 EFE 1 u f P 0 0 PART LIST OF EXPLODED VIEW DESCRIPTION NO 3 6 S O S E GEEK EC PART LIST LCD 32XR8K ver 1 0 15032400078 Frontcabinet 2 6 00860510 Keyboard 4 6 002101 0 Manboad 5 1 6 3242. 406 NB20 TO KEY amp IR IR 003 5 004 1 YPbPr L 003 B4 YPbPr_A 003 B4 003 83 5 CVBStRGB TV OUT SCART1 VIN 005 11 SCART1 VOUT 003 SC_FSW lt 47K R61 SC FS 4 BC847AW SCART1 L 872 106 SCART1 LOUT R73 10K co SCART41_A SCART1 ROUT lt R67 418K PESDSVOLSUY N2 fa PESDSVOLSUY HJ 2105W X1 SCB 003 82 VB17 BCB57AW RB145 4 7K V113 NB24 PI5V330 STBL20 12 501 VB18 BCB57AW SC SOG IN V114 BCBS7 AW main board sheet2 5 19 lo vB BC857AW 003 B2 HDMI INPUT mit BCB857AW 51 RXC RXC RX0 1 HOMI SDA L HOMI SCL HS RGB VS R6B 1K 0549 8541 1 14 550 681 00 CS17 100 C518 100n 4 VGA INPUT OR INPUT VIDEO INPUT SCB SCG 5 506
3. SCR SC FSW SCART1 VIN 005 43 005 F1 8516 47 RSi7 10 8518 47 RS19 10 520 47 RS24 10 8877 9578 9579 L 524 8926 Rs22 8553 7 9 9523 9571 8573 3j CVBSO VCOMO lt TV SIF CVBSOUT 100n CS39 100n SIF1P TV SIFM 538 SIF1M AUVRADN PH Lout PH Rout SCART1_LOUT1 SCART 1 AOUT4 AMP_LOUT1 AMP ROUT1 AUVRADP AUDIO INPUT SCART1 L SCART1 R VGA L VGA R YPbPr L YPbPr R 540 AUVREF 0941 AULO C942 AURO 0943 AUL1 0944 AUR1 5545 AUCOM 05456 AUL2 CS47 0948 ToTro no ro ro ro ro ro AUL3 533 1 AUR3 R834 AUOUTL3 535 AUOUTR3 RS3b AUOUTLE 9537 AU0UTR RS38 AUOUTL As2 004 1 005 1 RS3 004 A1 005 A1 22 L RS38 18n 0519 D 58 855138171 AUOUTR AUOUTS GPIOF2 GPIOF3 GPIOF4 GPIOFS GPIOF6 GPIOF7 GPIOFB GPIOFS GPIOF10 GPIOF11 HWRESET AVOD SIF AVODA AVDD ADC AVDD SIF AVDD HDMI AVDD MEMPLL AVDO AU VOD MPLL AVDD AU AVDD MEMPLL AVOD_OVI6 AVDD DVI12 AVDD MPLL157 AVOD_MPLL208 VODC 203
4. GND BCB47AW 0901 GP31032M B001 26 ui meo POWER S906 12558 source IR key board X511 007 18824 4 x nig 4 Lo 7 9660 e VS 9 C 9 9 E BIC QIQ a 8 y 3 roe oea F B 8 pin 1662 7 4 AGE noge 4 e 12st Su 116 7 ges 4 f lt 67S 2 t 2554 id Hiep g 8 tax 1 BES ee E AGE 0007 x 4 beso xe 8 ES 2 wide n BOSA
5. SANYO FILE NO SERVICE MANUAL LCD 32XR8K PRODUCT CODE No LCD TV 1 682 347 53 REFERENCE 5 0915062 CONTENTS Seria EN Alignment isesd Working principle analysis of the unit BOCK CAC uu E Winng diagrama Troubleshooting guide oss ressora Nee bb esce ied a Schematic diagrams Em APPENDIX A Assembly list APPENDIX B Exploded View Attention This service manual is only for service personnel to take reference with Before servicing please read the following points carefully Safety precautions 1 Instructions Be sure to switch off the power supply before replacing or welding any components or inserting plugging in connection wire Anti static measures to be taken throughout the entire production process Do not touch here and there by hand at will b Be sure to use anti static electric iron C It s a must for the welder to wear anti static gloves Please refer to the detailed list before replacing components that have special safety requirements Do not change the specs and type at will 2 Points for attention in servicing of LCD 2 1 Screens are different from one model to
6. 001 03 BC847AW 11 4 70 567 15 4A81117 3V3 IN QUT 13 3AVDD e 1815 STBL2012 501 AVOD HDMI X915 TJC3 18A e 2V MED 004 E1 POWER ON PG 004 03 TO POWER BOARD 1516 STBL2012 501 1517 STBL2012 501 AVDD MEMPLL LS18 STBL2012 501 AVDD AU 1519 STBL2012 501 AVOD SIF 1514 STBLe012 501 VOD MPLL POWER_ON 004 B6 NS18 AP1501 50K5 Output FB Br 5V PANEL SLF 12575T 470MeR7 521 5125 25V 4700 17 210845 0 520 STBL2012 501 05106 05107 09108 55111 I I 100n 100 100 100 100 bold m 05117 05161 s CS130 100 16 AZ1084S ADJ APPROACH 1 9V VDDC 105116 5120 68123 09126 1 5129 100n 100n 100n 100n 100n V818 BC847AW BCB47AW DES EN main board sheet 4 5 003 H4 003 6 ADJ_PWM2 003 5 004 1 003 5 004 1 147 1111 518 2012 501 R165 EE SCART1 VOUT Cu BC857AW 109 003 1 003 F1 1 TUNER101 Ee i 0
7. SCI 1 4 AST sss 9g 0007 Ed ISI SGH Sa 5 o 9 4 5 8 8 7 Si Bei c BU 59 dri D E I 1 uus CT el a 1 13 Bos T BET x mar 8 lt X 1 4 KE s 888 NE 8 90 g E Ct 5 T eH OSN lt lt S Cp ros E d 8 Yee T o E EN EL 158 a I 65 lt lt Br lt GEGH I ica 6080 53 E Se gn gt i 5 shee ur ep d 3 ai 8 H s 100v 3n 1 M nito m 8 GH 5 p gt a L vest e Lu 395 4 m e 7 899 Eos 5 z dh FH vosa 40157034 sid m E 8 ano gt 07 4 072 N3SI 71 IIA ON el test 0689 ON utu T ET T 1 1no 43 1 zos v E 23 Awad T gt 8 050 87 LCD 10084 880 71 84 1 E gt 100 T Ey B 9760 C 4 4 82 gO up pls nos x c 8 160 A A go 8 gosa gt a 8 0873 6990 T 23000 6790 2 e L
8. Block diagram POWER MEG ATMEGSL EDID 24602 VGA FLASH SEDE HDTV SW EEPROM PI5V330 SCARTI RGB LCD TV SCARTI V CONTROLLER SCARTI L R ETE HDMI MST9E19B L R VGA L R YPbPr L R AUDIO AMP TUNER PRE AMP R2S15102NP SAW SPEAKER IFAMP SIE TDA4470 SCARTI V OUT 2 AMP TV L R PRE AMP SCARTI L R OUT LM358D IC block diagram 1 MST9E19A The MST9E19A is a high performance and fully integrated IC for multi function LDC monitor TV with resolutions up to SXGA 1280X1024 WXGA 1440X900 It is configured with an integrated triple ADC PLL an integrated DVI HDCP HDMI receiver a multi standard TV 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 To further reduce system costs the MST9E19A also integrates intelligent power management control capability for green mode requirements and spread spectrum support for EMI management RESTE 254 nf L T y 4 it x Rh 155 PWM3 155 PWM2 154 DIGO 9 157 0150181 152 GND 151 VDDP 150 DIGO 7 149 DIGO 6 158 DIGO 5 147 DIGO 4 1 DIGO 3 145 DIGO 2 144 DIGO 1 15 DIGO 0 142 VDDC 191 GND 130 VDDP 135 PWM SENSE 138 PWM DRV PWM 136 IRIN 135 INT DDCA 133 DDCA DA 132
9. GND 204 VODP 186 51 010 IVSYNC IHSYNC GPIOEO LVSYNC GPIOE1 LHSYNC GPIOE2 LDE GPIOE3 LCK LBOM LBOP LB1M LB2M LB2P LBCKM LBCKP LB3M LB3P LB4M LB4P LA0M LA1M LA1P LA2M LA2P LACKM LACKP LA3M LA3P LA4M LA4P GPIOF 19 GPIOF 18 GPIOF 17 GPIOF 16 GPIOF 15 GPIOF 14 GPIOF 43 GPIOF 42 PWM SENSE PWM_ORV BC 9 847 AW Es SV PANEL 151 STPB3216 380PT rn NS4 5145580 PWM3 PANEL 003 6 for TTL output Siem malesu Siem mmo 3 9 O amp foto 5 a a a a 124 LVSYNC LHSYNC LDE LCK RX00 R7 00 86 RX01 R5 RX011 R4 RX02 R3 1 9 RXOC R1 RXOC4 RO RX03 67 8 03 66 RX04 65 8 04 64 63 RXE0 G2 RXE1 G1 1 60 2 7 86 RXEC 85 4 3 83 RXE31 82 RXE4 B1 RXE4 80 123 122 121 1 VSS WP 50 LVDS VCC for LVDSX 2 output 57 BCB47AW voo PM25VF040 NS3 001 02 001 H5 D VS3 BSS138LT1 001 02 001 5 004 1 002 F2 9572 0 005 002 5 004 1 NS1 AT24LC32A
10. for internal digital block Capacitor connection pin for 1 o vst Ground pin for power output stage 10 3 TDA4470 The TDA4470 is an integrated bipolar circuit 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 Block Diagram Offset E Loop switch comp filter optional 26 FPLL AFC switch AFC Video det HHI AGC Standard Switch SIF 2 Intercarrier FM NICAM SIF input Switch SIF 1 AF AM Figure 1 Block diagram 11 Pin Description Figure 2 Pinning Vi SIF2 ViSIF2 Rcomp Vo AM Vo Vs VAFC CRef GND Pin Symbol Function 1 2 Vi spi SIF1 input symmetrical 3 Input selector switch 4 9 16 GND Ground 5 CAGC SIF AGC time constant 6 7 vir input symmetrical 8 Cacc time constant 10 Take over point tuner AGC 11 Tuner AGC output current 12 Vo vid Video output 13 Vsw Standard switch 14 Vsw L switch 15 Black level capacitor 17 Internal reference voltage 18 LF Loop filter 19 Vew AFC switch 20 21 Vvco VCO circuit
11. 22 VAFC AFC output 23 Vs Supply voltage 24 Vo Intercarrier output 25 Vo AM output sound 26 Rcomp Offset compensation 27 28 Vi str2 SIF 2 input symmetrical 12 Wiring diagram 2 ANEL m power board a gt T CON 8 S69HU 1320B 569HU1326C speaker key board IR board 569HA07050 569HA0909A X81 X515 11pin X816 XS14 Spin 20 X811 XV 4pin main board J dU 13 Trouble shooting 1 Fault clearance Before servicing please check to find the possible causes of the troubles according to the table below 1 1 Antenna signal on the screen Picture is out of focus or jumping Bad status in signal receiving Poor signal Checkifthere are failures with the electrical connector or the antenna Checkifthe antenna is properly connected Fringe in picture Check if the antenna is correctly oriented Maybe there is electric wave reflected from hilltop or building Picture is interfered by stripe shaped gt Possibly due to interference from automobile train high bright spots voltage transmission line neon lamp etc Maybe there is interference between antenna and power supp
12. 4 1 Unit adjustments Connect all the boards according to wiring diagram then power on and observe the display Method for entering factory menu press INPUT 2 8 and 0 in turn to enter factory menu press and to select adjustment items and press VOL and VOL to adjust value items press MENU repeatedly to exit Method for software upgrading When software upgrading please enter factory menu first select ISP of OPTION set ISP to 1 and you can begin to upgrade After upgrade finished it needs to set ISP back to O If the picture can t display when upgrading it needs to solder JB1 on main board Please unsolder JB 1 again after upgrading 4 2 Initialization Enter factory menu select OPTION and HOTEL OPTION sub menu adjustment of items to see table4 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 046 Software will preset the data according unit SIF PRESCALE 02bE Software will preset the data according unit BACK LIGHT FF Software will preset the data according the type of panel ALL COLOR 1 1 white balance of each channel auto offset based on the HDMI white balance 0 white balance of each channel adjust the offset base separately Note do
13. SN LL4148 0951 VIDEO_HS 005 He HPDCTRL 052 100p NS5 V 5118 1 945 001 F2 OATAREQUEST 105197 95113 100 100 8515 Lj 5114 100 V 001 E4 AMP MUTE VS6 005 65 BCB47AW BLK ON 004 65 WP_FSH ADJ PWM2 lt PWM3_PANEL lt VS4 BCB47AW vss BC847AW 003 64 AMP STD 005 E5 main board sheet 3 5 555 100n RX00 R7 lt 003 F2 RX00 R6 lt 003 F2 RX01 R5 lt 003 F2 RX01 RA lt 003 F2 RX0e R3 lt 003 F2 RXoe Re lt 003 F2 RX0C R1 lt 003 F2 RXOC RO lt 003 F3 RX03 67 lt 003 F3 RX03 66 lt 003 F3 RXE0 63 lt 003 F3 RXE0 G2 lt 003 F3 RXE1 61 lt 003 F3 RXE 1 G0 lt 003 F3 RXE2 B7 lt 003 3 RXE2 B5 003 F3 RXEC B5 lt 003 F3 RXEC B4 lt 003 F3 RXE3 B3 lt 003 F3 RXE3 B2 lt 003 F3 DF14 30P 1 25H XS1 RXD 001 02 001 5 003 5 SDA 003 45 005 1 lt SCL 003 A5 005 A1 CT IR 002 5 003 5 STPB3216 3B80PT ATMEGASL 6511 7 3728 2 100n VGA DETECT
14. and synchronous wave detection to get video signal TV V after pre intermediate amplification IF will also be sent to acoustic surface wave Z16 to do filter at the same time then it will be sent to TDA4470 to do intermediate amplification and output the second sound intermediate frequency signal TV SIF The TV V signal output from TDA4470 together with TV SIF will be sent to main IC NS2 MST9E19B Video signals of VGA and HDMI will be sent to MST9E19B too Video signal of YPbPr and Video RGB of SCART1 via video switch NB24 PI5V330 will be sent to MST9E19B Video signal V CVBS of SCART1 YPbPr and 5 will be sent to MST9E19B The main NS2 MST9E19B 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 etc And it also has functions of audio selection processing and MCU The video signal via MST9E19B processing output 4 pairs differential signal and 1 pair clock signal for LCD panel display TV V output from TDA4470 via double video amplifying it will be sent to SCART1 for AV OUT Audio signal via MST9E19B processing will be sent to sound amplifier NV4 2515102 amplifying to speaker TV SIF via MST9E19B demodulating and sound processing then output to NV3 LM358D amplifying the signal will be sent to SCART1 as AV OUT
15. gray scale are 285 293 4 4 2 VGA YPBPR AV white balance check and correct a Input VG 848 signal of VGA to VGA terminal TIMING854 800 600 60Hz PATIERN CROSS and auto adjust to full screen then input PAT948 black white signal enter factory menu ADC ADJ select AUTOTUNE and wait for OK display Input PAT920 8 gray levels check if the white balance is normal if not enter COLOR TEMP menu and set ALL COLOR to 0 and fine adjust according the method of 4 4 1c b Connect VG 848 signal of YPBPR to YPBPR terminal and input TIMING972 1080i 60HZ 100 color bar of PAT976 include black white bars Enter ADJ submenu select AUTOTUNE and wait for OK display Input PAT920 8 gray levels check if the white balance is normal if not set ALL COLOR to 0 and fine adjust according the method of 4 4 1c c Input AV signal PM5518 8 gray levels NTSC to VIDEO1 terminal check if the white balance is normal if not set ALL COLOR to 0 and fine adjust according the method of 4 4 1c Note it can t set back to 1 once ALL COLOR changes to 0 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 5 2 AV YPbPr terminals Input AV S YPbPr YCbCr HD signal check if it is normal 5 3 VGA terminal Insert VGA terminal input VGA format signal of 640X480 60 Hz and check if the disp
16. s wall mounting components 1 2 Screw 4pcs expansion bolts to fix If your wall is a wooden structure please e Take out these parts from the box the wall mounting bracket on the fix the wall mounting bracket on the wall wall with 8 pcs wood screws mounting connector to the rear of the Use the 4pcs M4 screws to fix the wall Wall Mounting po display unit 1 1 including bracket M Uy 1 if 1 1 1 1 1 T 1 E 2 and connector L ums lt Expansion Bolt Wood Screw Wall Mounting Connector M4 Screw Wall Mounting Bracket Fig Fig 2a Fig 2b Fully insert the two insertions on the wall mounting connector into the Use screwdriver to revolve the Clasper to the Positioner locating grooves on the wall mounting bracket from top to bottom end following the direction of the arrow SANYO SANYO Electric Co Ltd June 2009
17. 010 Backcabnet 6 1016151165010 Stand Pt z 5500806004 Speaker 2000000 040 lRboard tT 212010 Powerboard J 1 40 44035140 User manual ft 11 5 7 Remote Control 15 11 Only the parts in above list are used for repairing e Other parts except the above parts can t be supplied Assembling the Stand Safety Precautions Please read these instructions thoroughly prior to attempting this installation 2 Be sure to handle this product very carefully when attempting assembly If you are unsure of your capability or the use of tools necessary to complete this activity refer to a professional installer or service personnel The manufacturer is not responsible for any damages or injuries that occur due to mishandling or improper assembly installation 3 When using a table or bench as an aid to assembly be sure to put a soft cushion or covering 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 Accessories l Stand I unit 2 M5 Screw 4 units To install the stand Lay your flat screen down on a table or bench Make sure that you put down soft cushion or cloth so that your TV is not scratc
18. 03 83 005 A3 K BC857AW C11 1 111 1000u 10V 95 0 L XT5 SMB 220 NE ir 5 L112 22uH 8 OK VIF 0 1 2 8 7 gt VIDEO H VIF IN 22 K vile DID pe o VIF ING BCB47AW 7 fik BT LOCK 24055 OUT SIF Acc 5 224 R8 16V 10u 10K R43 amp GNO ME sync signal detect TDG 5F6 W124X V110 BC857AW TUNER BCB47AW 003 1 003 1 003 83 005 1 TDA4470 MFLG3 003 83 003 5 0 8 2012 110 12 24 _ 4 33UH 3A 5 5 2012 110 501 035 12V 24V_ AMP 100n LVS ay A7503AY 150M SCART1 LOUT CBIAS 002 F2 ROSC GND A2915102NP AVDD PROT 500 STBL2012 501 e z E gt SCART1 ROUT 002 F2 a 5 gt D zie 9 12V 24N AMP CV48 NV3 LM358D SCART1 LOUT1 003 4 CV36 100n 47K Th AMP 510 003 6 ou 43 BCB47AW 4 7K SCART1 ROUT1 003 4 LT main board sheet 5 5 901 Vout
19. 27 MMBD1204 mm RB10 100 WP gt TXD gt BIN gt 2 GIN E AIN gt am gt soc gt VGA DETECT 2 HS RGB 13 3AVDD v2 38 BCB47AW 510 VB3 BCB47AW A MMBO 1204 081 BC847AW XB1 HDMI FIX CM1213 08MS CH1 003 F5 PESDSVOL4UG N82 XB3 JY 3541L 01 030 505 01 406 4 BC847AW l lt DATAREQUEST LL4148 CH8 CH7 VP CHE CHS X85 JY 3541L 01 030 HPDCTRL 003 F5 HOMI POWER HOMI EDID 24C02N 105127 WP PESD5VOL 406 HDMI POWER 232 5 pur 5 HOMI SCL RXC 861 800 GND vt T10UT C1 RAIN Cot 863 R10UT y 21 TeOuT R20UT R2IN 100 49 Lr 100 8850 4 TXD 001 02 003 5 main board sheet 1 5 Lr 001 02 003 45 004 A1 HJR b513 PB 3 XB17 5 01 406 47 100n Tis 47 84 CB41 100n fi 47 0849
20. DDCR_CK 131 DDCR DA 115 AD 7 114 AD 6 AD 5 2 R2815102NP Block Diagram PYUM2 Control nder Voltage Logic Over Temp Detection Detection NAME Description OUT1 Power Output pin 1 EXE Power supply pin for power output sta Stand by control pin When this is L circuit current is reduced There 15 the pull down resistor S0Kohm typ 4 PWM1 PWM input 1 for phase compensation 5 IN1 Analog input 1 The gain 15 depended on the external resistance 6 CBIAS capacitor is connected so that it may not be influenced of power supply change Ripple Filter ROSC Control pin for PWM carrier frequency GND pin for analog block 9 VREF Capacitor connection pin for analog block reference BE voltage source PROT O Protection Timer pin At protection mode the output becomes L level The timing capacitor 15 connected IN2 1 Analog input 2 same as INI BTL operation When this is connected to DVDD pin via the resister Reversed signal of OUTI is output to OUT2 12 PWM input pin 2 for phase compensation 13 MUTEL 1 Mute control pin When this is 71 7 it becomes mute status Pie woe Power supply pin for power output stage our BTS Ground pin for power output stage 2 Capacitor connection pin for bootstrap Built in power supply pin
21. able is correctly connected e Of if it has received the right video signal No sound Checkifthe mute audio frequency setting is selected Checkifthe sound volume is set to minimum Make sure the earphone is not connected Checkifthe cable connection is loose When playing VHS picture search When being played or in pause VHS picture search tape tape there are lines at the top or bottom of the picture sometimes can t provide stable picture which may lead to incorrect display of the liquid crystal TV In this case please press auto key on the remote control so as to enable the liquid crystal TV set to recheck the signal and then to display correct picture signal 15 2 Troubleshooting guide 2 1 raster Turn on power supply check if the red indicator is light in the STANDBY Check if PIN9 5V of XSI5 on main board is normal Check STANDBY circuit of power supply board yes Press POWER button in the unit or sensor control and check the indicator blue Check if the PIN2 3 of 514 on main board is high level yes Check back light board no Replace NS2 Check NS14 and its red Check if the PIN11 of XS15 on main board 15 low level yes Check power peripheral circuit 16 supply board 2 2 Raster but no picture Check if the unit button Does display OSD and remote control menu in screen when operation press menu button C
22. another and therefore not interchangeable Be sure to use the screen of the original model for replacement 2 2 The operation voltage of LCD screen is 700 825V Be sure to take proper measures in protecting yourself and the machine when testing the system in the course of normal operation or right after the power is switched off Please do not touch the circuit or the metal part of the module that is in operation mode Relevant operation is possible only one minute after the power is switched off 2 3 Do not use any adapter that is not identical with the TV set Otherwise it will cause fire or damage to the set 2 4 Never operate the set or do any installation work in bad environment 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 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 once Likewise if the screen is not working after the power is on or in the course of operation the power must be cut off immediately and no more operation is allowed under the same condition 2 7 Do not pull out or plug in the connec
23. heck if all channels have no signal a VGA SCART CVBS HDMI Enter factory menu Which is no signal initialization EEPROM of channels Replace then turn off the TV main board turn on again display picture Replace main board YPRPB SCART RGB Adjust main board Check if NB24 output signal again Check if 1 VPP signal and noise wave of on the TV 9 board Replace NB24 Replace Check if output main board Check TUNER101 IF signal of and its periphery TUNERIO1 pin 11 is normal Check N3 and its periphery 17 2 3 no sound Check if PIN2 9 10 and Check the wave of 14 voltage of 4 15 PINS 11 of Check NV4 and its normal periphery Check PIN24 wave of N3 Check NS2 and its periphery Check PIN11 wave of Check N3 and its 101 Check TUNER101 and its periphery 18 001 5 003 5 004 1 001 5 003 45 S Rgee 10 003 Be gt RB 3 10 HOR F 158 3 t RB24 10 CB10 47n 1 1 RBe5 10 CB11 47n i AB26 10 CB12 47n NB4 f PESDSVOLSUY AB27 10 CB13 47n CB14 LJ in 40 27 C LB1 STBL2012 501 VGA EDID 4 02 1051
24. hed 2 Align the locating grooves of the stand with the locators on the TV bottom stand column fully attach the stand to the stand column Stand Column Locators Locating grooves Attach the stand to the stand column Tighten with four M5 screws NOTE Appearance of this product in illustrations may differ from your actual product and is for comparative purposes only 2 Design and specifications are subject to change without notice WALL MOUNTING INSTRUCTIONS Safety Precautions Be 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 Be sure to place the unit on a stable and soft platform which is strong enough to support the unit 6 Do not uplift the speaker when moving the display The appearance of the unit may different from the actual ones 7 Design and specifications are subject to change without notice 8 Retain these instructions for future reference Note All the wall mounting parts are optional and may be unavailable in your model Below we will show you how to mount the Display on the wall using our company
25. lay is normal 5 4 check sound channel Check the speaker of each channel 5 5 other function check Check the turn on turn off timer asleep timer picture sound mode OSD freeze mute stereo etc 5 6 presetting before ex factory Item Setting Item Setting Item Setting PICTURE MODE STANDARD BALANCE 50 OSD LANGUAGE English COLOR MODE NORMAL VOLUME 50 OSD HPOSITION 50 NR WEAK SLEEP TIMER OFF OSD VPOSITION 50 ZOOM FULL TTX LANGUAGE WEST OSD HALFTONE 50 SOUND MODE STANDARD BLUE SCREEN OFF OSD DURATION 15 WSS OFF 6 Software instruction Table6 software instruction No Code No Type Function Flash written Method before paste NS14 5270008001 ATMEGA8L Power image Yes Written with NS3 5272540001 PM25VF040 Main CPU program Yes instrument like NB3 5272402002 24 02 105127 HDMI EDID Yes ALL11 NB7 5272402002 24 02 105127 VGA EDID Yes NS5 5272404002 24 02 105127 Store some important No No written information software Working principle analysis of the unit The RF signal received by antenna will be sent to tuner TUNER101 then IF signal will be obtained through high amplifier and mixed frequency through pre intermediate amplified by V15 then it will be sent to acoustic surface wave Z17 to do IF filter and get better IF characteristics then it will be sent to N3 TDA4470 to do intermediate amplification phase locked loop VCO
26. le 3 5 Be sure to protect the cabinet from damage or scratch during service dismantling or mounting Alignment instructions 1 Test equipment 5518 video signal generator VG 848 signal generator VG 849 digital video signal generator CA210 color analyzer 2 Power test Connect main board power board and IR board according the wiring diagram connect the power and press standby to turn on the TV Test the pin voltage of 515 the data is shown in table1 Table1 voltage data of 515 Pin1 Pin2 Pin3 4 Pin5 Pin6 Pin8 Pin10 Pin11 LC 26HUXX 8 55 9 45V 0 4 75 5 5V 0 11 69 12 92V 0 4 75 5 5V 0 H LC 32HUXX 8 55 9 45V 0 4 85 5 36V 0 11 4 12 6V 0 4 85 5 36V 0 H Test the pin voltage of XS16 the data is shown in table2 Table2 voltage data of XS16 Pin1 Pin2 Pin3 Pin4 Pin5 Pin6 LC 26HUXX 4 75 5 5V 0 8 55 9 45V 0 30 4 33 6V LC 32HUXX 4 85 5 36V 0 8 55 9 45V 0 31 36 32 64V Test the pin voltage of XS11 the data is shown in table3 Table3 voltage data of XS11 Pin1 Pin2 Pin3 Pin4 Pin5 LC 26HUXX 20 25 23 63V 0 LC 32HUXX 22 8 25 2V 0 3 Alignment flow chart The alignment flow chart is shown as fig 1 Check DDC FLASH HDCP and power control IC Performance check Preset ex factory Fig 1 adjustment flow chart 4 Adjustment instruction
27. ly line Please try to separate them in a longer distance Maybe the shielded layer of signal wire is not connected properly to the connector There appear streaks or light color Check if interfered 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 Checkto see if the power plug has been inserted properly into the socket No picture and sound Checkto see if the power supply of liquid crystal TV has been switched on As can be indicated by the red LED at the front of the TV set See if it s receiving the signal that is transmitted from other source than the station Checkifit s connected to the wrong terminal or if the input mode is correct Checkifthe signal cable connection between video frequency source and the liquid crystal TV set is correct Deterioration of color phase or color Check if all the picture setups have been corrected tone Screen position or size is not proper Check is the screen position and size is correctly set up Picture is twisted and deformed Checkto see if the picture frame ratio is properly set up Picture color changed or colorless Check the Component or RGB settings of the liquid crystal TV set and make proper adjustment according to the 14 sig
28. n t set ALL COLOR to after the offset adjustment if you do so the adjusted parameter of each channel will recover to the parameter of HDMI EEPROM MEMORAY gt EEPROM Initialization operate when EEPROM data chaos RECALL 4 3 Adjustment for AFT voltage and AGC voltage of IF channel in TV 4 3 1 IF AFC adjustment Disconnect J1 B face input 38 9MHz PAL signal of 80dB to the pole of J1 near 11 Adjust L5 to value 1 25V of TP2 Enter factory menu adjust TDA4470 from BG to LL input 33 9MHz SECAM signal of 80dB adjust R71 to value 1 25V of TP2 then solder J1 4 3 2 IF AGC adjustment Input 184 25MHz PAL BG RF signal of 60dBuv to RF terminal adjust R64 to value 4V of and there should be no obvious snowy picture Increase the signal to 90dBuv and it should be display normally and no obvious noise 4 4 White balance adjustment 4 4 1 white balance adjustment of HDMI a Input VG 849 signal from HDMI TIMING854 800 600 60Hz and eighth 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 OFF adjust R OFF and G OFF let the color coordinate of the second level be 285 293 and the brightness be about 3nit 6nit Fixed value of B GAIN adjust R GAIN and G GAIN let the color coordinate of the seventh level be 285 293 Adjustment R OFF GOFF R GAIN and G GAIN repeatedly until the value of the two levels
29. nal types Picture too bright and there is Checkifthe contrast setting is too high distortion in the brightest area Possibly the output quality of DVD broadcaster is set too high t maybe also due to improper terminal connection of the video frequency signal in a certain position of the system Picture is whitish or too bright in the Check if the setting for the brightness is too high darkest area of the picture Possibly the brightness grade of DVD player broadcaster is set too high No picture or signal produced from Checkifthe cable is disconnected the displayer if XXX in search Checkifit s connected to the proper terminal or if the input appears mode is correct There appears an indication Checkifthe TV set can receive input signal The signal is outside the receivable scope not correctly identified and VGA format is beyond the specified scope Remote control cannot work Checkifthe batteries are installed in the reverse order properly Checkifthe battery is effective Check the distance or angle from the monitor Checkifthere is any obstruct between the remote control and the TV set Checkifthe remote control signal receiving window is exposed to strong fluorescence No picture and sound but only Checkifthe antenna cable is correctly connected or if it hash has received the video signal correctly Blur picture Checkifthe antenna c
30. tion wire when the module is in operation or just after the power is off because in this case relatively high voltage still remains in the capacitor of the driving circuit Please wait at least one minute before the pulling out or plugging in the connection wire 2 8 When operating or installing LCD please don t subject the LCD components to bending twisting or extrusion collision lest mishap should result 2 9 As most of the circuitry in LCD TV set is composed of CMOS integrated circuits it s necessary to pay attention to anti statics Before servicing LCD TV make sure to take anti static measure and ensure full grounding for all the parts that have to be grounded 2 10 There are lots of connection wires between parts behind the LCD screen When servicing or moving the set please take care not to touch or scratch them Once they are damaged the screen 1 would be unable to work and no way to get it repaired If the connection wires connections or components fixed by the thermotropic glue need to disengage when service please soak the thermotropic glue into the alcohol and then pull them out in case of dagmage 2 11 Special care must be taken in transporting or handling it Exquisite shock vibration may lead to breakage of screen glass or damage to driving circuit Therefore it must be packed in a strong case before the transportation or handling 2 12 For the storage make sure to put it in a place where the environment can be controlled so as
31. to prevent the temperature and humidity from exceeding the limits as specified in the manual For prolonged storage it is necessary to house it in an anti moisture bag and put them altogether in one place The ambient conditions are tabulated as follows Temperature Scope for operation 0 50 C Scope for storage 20 60 C Humidity Scope for operation 2090 8590 Scope for storage 1096 9090 2 13 Display of a fixed picture for a long time may result in appearance of picture residue on 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 displaying still picture in high brightness for a long time 3 Points for attention during installation 3 1 The front panel of LCD screen is of glass When installing it please make sure to put it in place 3 2 For service or installation it s necessary to use specified screw lest it should damage the screen 3 3 Be sure to take anti dust measures Any foreign substance that happens to fall down between the screen and the glass will affect the receiving and viewing effect 3 4 When dismantling or mounting the protective partition plate that is used for anti vibration and insulation please take care to keep it in intactness so as to avoid hidden troub
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