LCD-26XR7 LCD-32XR7 SERVICE MANUAL LCD TV
Contents
1. 104 4 3 16 9AV 5 1 5 1 0 0 1 3 PH DEC 581 0 1 1 3 POT 3 gt SCART2 LOUT 3 em SIF 1339 vao TH I AVDD AU 42 5V MVDD VDD_MPLL AVDD_MemPLL 8 zd 5 E AVDD HDMI 0 2m _ _ 49v 001 45 2 24 857AW GND D 48v 7 002 F2 002 1 004 06 S DECT Ct m tpy 0016 1 9 u oF 9 55 EH TL a co pg 008786 n 1x14 287290 AVDD_HDMI O 0msxiDOr 88 MT 55 8 5 BBBBR JJ gogog j 882288 30 002 04 003 7 4 4 m gt 0 St lt 15 851 54 12 gt gt gt gt gt gt gt gt gt gt2. 40000600 00 188241 1 AST 9660 9 2 9 2 9 2 B 8 4 8 sO 6 5 0 2 1 4 5 4001 2 7 888 5 0 mim ni 0 653 El TTSN AGE 1 55 AOS 5 i 3l 6963 2558 sersa 8989 8 3 SES 5 AGE 0007 1 5 PE 3 E 852 868 o8 ye 9 58 0007 48 8E ees T 1 ISO o 868 5 6 4 H 5 o tO e Ps NGE _ Ri cal ex al 8 be 88 E 88 23 5 8 851 1 gel ART Ks 88 Bg 8 E 101108 8 B ors ES Jalala L lt lt lt 3 S SN Ph B lass WO mage lt 2 N 8 in YY YYYYYYYY ag o 8 2 885 23 lt 2 SESH 9EGH HI 1 5050 vega dose 38 AMT 001 8 op 8 gosa 4 100931
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6. L 2 10549 ADJ L111 STBL2012 501 150 C155 C157 C161 L 100n 400 100 100n 21 UY 148v C160 C163 100n 100n C181 M 100n 100n C168 100 N103 51117 2 5 GND D 2 5VM L443 STBL2012 501 2 5V_DMC L gt 003 L5 1114 STBL2012 501 lana 2 5V_DMQ C gt 003 15 442 STBL2012 501 mm 2 gt 003 17 gt 215 C16 7196 100 C17 0180 100n 100 e GND D page 2 of 4 S DECT
7. 40000600 9007 I 188241 AST 1 00000000000 8 2 B a amp li 007 5 1 a 8 ME 8 00 8 m 1 1889 gt RE 5883 ion ge T TZLSH 2 3 ganze 8 958 nide BIT AGE 0007 1 M g 8 8 2 5 88 9669 gest Be 9 1 1 2 p 1058 1780 5 1GGH i a t o gN eee Boil as T LSL S d BN I S Bi 85 23 sie P 1 8 s S 1 AGE 00 82 8888 51 99 1 8 3 amp G 805N L A Ph WII region 8 lt E 5 ST in YY YYYYYYYY 2 Lj oO gs 8 pe BRS 25 8 8 Br 555 8881 lt wig mx 6050 gn gt E 0 58 3 gosa 2 100931 nito 9263 me EEGH 5 Er 7 TEGH cEGH 0 4 2 ES 85 23 Be a E 8259 19 z 89 vosa 40187044 810 4 6 am NASI 8 881 lI 53 wee ON 8 Test 0883
8. APPENDIX A assembly LCD 26XR7 MAIN COMPONENT AND IT S NO 404 1 4470 5274470001 XIeHUO495910 N405 77220 5277722001 XI6HU07001S0 84 MST9E88 5270988002 Interface XI6HU0212910 Key board IR receiver board Power board Remote control RC Y35 0F APPENDIX A Main assembly LCD 32XR7 NO MAIN COMPONENT AND IT S NO N404 TDA4470 5274470001 N405 MP7722DF 5277722001 Main board 90150 64 MST9E88 5270988002 Interface XI6HU0212910 Analog board XI6HU0495310 6 0230510 receiver board 6 0050910 Power XI6HU0212010 Remote control 6010 03507 RC Y35 0F Panel 203325506 V320B1 L04 APPENDIX Exploded view LCD 26XR7 3 PART LIST OF EXPLODED VIEW 0 26 7 DESCRIPTION 9 7 8 __8 PARTS LIST LCD 26XR7 ver 1 0 REF No PARTS No DESCRIPTION QTY REMARK 1 5 32 2010 Front Cover 1 2 6 0050910 Infrared Receiving Board 1 3 5 1 260 1 1016 102 4 6 00700150 1 5 6 00230510 1 6 XIbHX32WH03A Back Cabinet 1 7 X161706990
9. 004 1 lt 004 82 lt 004 82 2 lt 104 003 AD2 42V 004 06 100 003 L1 101 003 L1 102 003 L1 a m a 5 a 4 E gt 1303 STPB3216 380PT gt 9 002 F2 002 H1 003 L1 004 4 1 002 1 00000000000000 0 6 6 6 6266066 TJC10 08A 306 FOR DVB READY page 4 of 4 GND D D GND 89 T GND D GND D n g 9 7182 T ZHNOT 04 TJC3 6AWT 18 35 1 25 1 08 1MV8 EOPL 193075 NI 2 1 3 48 35 3003000090 21 25 18795 101 1 18 35 802 TJC3 7AWT 1 0 1 35 05
10. 1 01 25 1815 M MAY mc IR receiver board 5 1 CVBS RGB TV OUT 5V x404 TJC10 14A 2 5 2 2 3 5 3 5 5 3 3 3 3 405 TJC10 10A 23 4 3 03 3 x 4 Q X408 JY 3541A 01 030 5 SCART4_VIN 15 SCART1 VOUT 6 449 0 SC_FSW eB 34 8 e 8 414 a 5 wp gag 5 3 glz 8 g 3
11. 47__ 8526 400 0833 29 M LBOM 524 004 5 T 100 0887 018 550 gt RX01 001 46 SCB gt A 100n 3 15 LB1M 519 004 591 5 Rx01 8 221 GINOM Bip 004 5 1001 658 321 218 004 5 pxo2 217 i 00147 100 CS34 39 BINOP LBCKM 515 004 5 5 001 6 SCR 28 LBEKE 514 DOES LB 213 gt VSYNCO p 004 6 nxpa cad 40 84 5 15 004 6 2 4 NS4 LB4P 508 004 F2 RxE0 004 D4 gt 47 __ 8529 400 C836 BIN2M Em 207 002262 ES 004 04 SOY 42 SOGINE 508 00435 mei oo4 p1 47 8530 4006 C537 e 5 0 204 203 004 02 Pr 47 __ RS31 100 0538 4 B LAeP 502 004 2 T LACKM 361 004 2 5 10n 820 48 LACKP 500 poe ee L gt RXES 001 45 5 10n 0521 49 Zi 199 RXE3 001 5 1 on 0822 50 0 LA3P 188 gt RXE4 SCART2_C gt 001 45 10n CSe3 e 4 197 004 F5 gt RXE4 pud 47 8532 1001 0888 53 001 46 10n cses 54 5 SCART1 VIN i0n 6555 5 121 47 8833 2 3 EE VCOM1 120 EE 2 5V MVDD 42 58 09 81 CVBSO x 5 47 R534 4008 8829 551 83 18 2 8 HYSDU2B16P ET 2 O02 F1
12. 165 SARO 251 67 spo ise 57 25 1 165 501 BINOM ETH Der BINOP GND GINOM 31 3 167 VDDP GINOP 231 160 RDZ RINOM 32 55 WRZ RINOP 2 81 AD 7 AVDD AD 6 GND 1155 AD 5 HSYNCO Co AD 4 VSYNCO AD 3 2011 153 2 BIN2P 41 m AD 1 5 43 150 MADR 11 04 L9 MADR 10 GIN2M 5 145 MADR 9 RIN2P 5 MADR 8 RIN2M 5 135 GND 1 381 144 VDDM EH FE MADRU vo Gi 122 MADR 6 VCOM2 1511 MADR 5 853 30 MADR 4 cvas2 54 1571 MADR 3 cveso L EPS MADRIO VCOMO WEZ cvasour 581 i31 52 GND 601 AVDD MEMPLL SIFOM VDDM SIFOP GND AVDD SIF 27 1571 RASZ 12 BADR 0 Eleele EEEE pE EEEE caper i Wr ema PERI wur mo ass LENSO EFFET EErEE T r AF u 12232 323 74 Ao 0952 82222942420 6 983 RERE 25522 2 5489 5 EESS 545454 2272 9 88 5552 2 MP7722DF 7722 is stereo 20W Class D Audio Amplifier It is MPS second generation of fully integrated audio amplifiers which dramatically reduces solution size by integrating the follo
13. gt 003 18 4 gt stem 003 44 SC_FSM iran 003 08 1 of 4 m sox sx sc C3 001 11 003 88 8243 CI lt 004 Li 003 B9 100 8134 001 A9 003 C7 5V_STBY14 004 7 52 8442 8403 22 R413 8 003 08 004 05 VGA DETECT 5 1 001 13 BC847AW 32 768KHZ ATMEGABL POWER ON 002 22003 1 004 06 9V SCART2_VOUT POWER ON 083 36 003 07 004 05 001 4 KEYO 101 A81117 3V3 L104 STBL20 12 501 rr 003 1 003 7 IN OUT L105 STBL2012 501 M AVDD HDMI L103 STBL2012 501 L106 STBL2012 501 003 7 L107 STBL2012 501 gt AVDD MemPLL 003 17 AVDD AU 108 STBL2012 501 mM 003 J7 gt AVDD SIF 003 J7 gt H Aa C11 100 VDD MPLL 002 H1 003 L1 004 D6
14. 3L 401 L 8474 1 8480 8484 40528 400K E 18V m i 8 55 cil ES GND D 680 9 38 83 1404 89 8118 1 4 1 7 84304 81 58 SEIS GND D 86 SDA 5 6 BP S 89 say anc a GND D S ges aed gt T STR Sul 8426 920 ox NC eno 4 2 a s 6 0 112 2 75 4 8 25 OFFSET COMP INSELECT 3 R452 uh L 994 E Ed CT 8 61 62 90 0 _ 88 L 1 E 6ND D B 3 u ag TDA4470 MFLG3 S x N404 69856 2405
15. SV SW e 2 8 ae 1501 50 5 2 AMP_VCC2 8 1 nra m les c 9 pi DEI 47 Vin Output STPB3216 380PT 39 21 Blo Yes 470M2R7 GNO T evs SS GND 999 25 C476 50 L415 GND D 8 048 98388 1003 23 L 470 SND 6 0414 25V 100 C444 NCC2 hi aml 1444 402 4700 paga 442 100 gt sg ab ES G Bs 2188 J402 38 95 6ND D 6ND D 3E GND 2 0 4 403 GNO 8473 o A 404 C417 pu gs ps 47u 18V L405 4 GND STBL2012 501 X401 ARS 59 1 x 8 4 54 ag 8 5 1 09 R465 40 E 100 15V 1 3 391 473 L 55 100 ry ad C420 R438 75 TUER qe 1 85857 F IK BCB57AW 8479 R482 Or 40474 LER Rais V404 Da NOS 80 56K T AMP_LOUT 8 46 4 8 1 4148 ti 2 gu 5 4 S 0404 0461 _ 5 ird mana xt am 333 m 100u FSS 29 GND D gt 414 BND D 50 1 I e 8 oj oj A 8400 6ND D L 8 guum 8 548 GND D z o L 8 8 114148 pe J 380 22 404 a 2 88 5V_TUNER 407 5 z C465 L401 1 1 58 38
16. gt gt gt gt gt gt gt gt DI 850 0 0 001517 8 0 gt DI14 AISD3 3x11 T gt gt 3 AISD2 5 1 847AW Sus IR 22 z lt SS 548 6 T 10 001 L7 1 gt 10 e 0111 4150 546 88 9 7 001 L7 2 X IBS Sp DI10 AISCK 545 001517 DUI N DIS AIWS 544 001 16 gt 13 DVI CKP DI8 SPIDFIN 244 L_ gt scARTa_RouT 001 L6 RXCK gt 390 8588 EXT 017 240 b gt SCARTI I gt 15 DDCD SDA DI5 AUSDO 233 ir iby 901347 gt 3908 6539 DI4 AUSCK 236 s PEM SSEK VA m 1001 C940 VCLP ib MUS 235 420 12 ay SEG gt SCART4 LOUT 4 DIT AUMCKO 834 AQUTL ele 004 A7 D 100 cs 533 91 5 5 1 3 3V 1VSYNCZUATKi 527 001 L3VSYNC IN gt 2 MEE THSYNC UARX1 530 zs 58 Bs ag 155 sae 00442 B gt 47 6850 TIDE UA TXO 559 ger gear CUTS 001 12 506 gt 806102 GPIOEO 558 1 DVBA_SW 60 gt 47 400 6534 GPIOE1 526 50 281 HINIP 555 i 004 04 R 47 __ 8525 100 0832 1 GPIOE3 FOIS gt
17. 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 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 Adjustment GAIN R OFF and G OFF repeatedly until the value of the two levels gray scale be 285 and 293 3 3 2 VGA YPBPR AV white balance check and correct a Input VG 848 signal of VGA TIMING854 800 600 60Hz PATIERN CROSS and auto adjust to full screen then input PAT948 black white signal enter factory menu ADC 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 3 3 1 b connect VG 848 signal of YPBPR to YPBPR terminal and input TIMING972 1080i 60HZ color bar PAT908 include black white bar Enter submenu of ADC ADJ 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 3 3 2 c Input AV signal PM5518 8 gray levels to VIDEO terminal check if the white balance is normal if not set ALL COLOR to 0 and fine adjust according the method of 3 3 2 Note it
18. can t set back to 1 once ALL COLOR changes to 0 4 Software upgrade When software upgrading please enter factory menu first enter 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 web J1 of 01S board Please disconnect J1 again after upgrading 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 AVIS YpbPr terminals Input AV S YPbPr YCbCr HD signal check if it is normal 5 3 VGA terminal Insert terminal input format signal of 640 480 60 Hz and check if the display is normal 5 4 HDMI terminal Insert HDMI terminal input signal of 640 X 480 0260 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 other function check Check the turn on turn off timer asleep timer picture sound mode OSD freeze mute stereo ect 5 8 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 VPOSITIO
19. 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 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 cable is correctly connected 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
20. 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 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
21. 0 880 850 HE WDATA S REF E 118855 Teta sss E GND D 2 C842 AULO 114 33 161 80 80 158 iBtucl Ret RE 5 8 886 2 5V_DMC 842 2 AURO 297 257 05 113 8 49 VREF 33 ZT 2 BST 1 002 H5 001 16 3 110 Em 0063 8 I 001 A1 YPOPr_L gt 2 84 12545 74 DB 109 55 woArAST eet eet gel 2 5V DMQ 004 A4 YPbPr_R 8822 10 2 24 546 AUCOM 33 108 MDATAL10 Toye 4 44 18 Vood FE ST 6 0 0 2 24 847 75 010 1107 5 15 001 6 2 24 0548 AUR2 014 105 12171 0282 83 nao 8 141 004 8 1 gt 25 5 AVES 012 20488 NDATA 13 2 855 5 13 004 02 SCART_L 2 24 0850 AUR 013 402 33 NDATA 14T es 088 8 MDATA 101 004403 SCART R gt 2 24 0851 AUMDNO D14 101 1517 20 oy 092 19 47 C813 4098539 015 1127 NMCLKT 8 32 UM 006 3 wen Lar 9 98 12 BOUTE ev 1008521 AUOUTL MCLKZ 455 33 559 CKE 29 009 57 AMP LOUT 1 100851 AUOUTR MCLKE 154 33 550___ 30 10 paio 59 MORTAL AMP_ROUT C MVREF 153 paw 55 31143 59 2 001547 AUOUTS DQM 123 33 8561 0680 484 3 0
22. 013 163 5215 0 bast scie 2 NEN cu 100n 45V 1 S 45 T n 08 5 gt 64 SIFOP RASZ 734 casz 8 8 Fm vss34 34 6 89 5 CASZ 135 88 88 0 15548 84 871 5121 WEZ 158 58 4 i 41449 VS866 1 3 cse 5 AUVRADN BADR1 158 12 Node 188813 220 5a 16 1 400 58 BADRO 150 ARUI41 SBA1 55 80 188888 1 23 11 AOP 9 55064 15 2 1000 ssl 25 gs GND v I Ty 08 re 83 A10 M48 1 NC 747 ARIBJ 1 2 13 RAIN cet 4 EE NC 143 mE m sU G Rsa ca 5 18 901 NC HAC ARIS AVEO AU lt 400 44 6 400 91 NC onum 5 00 4 gt T VDDC gt AVDD_HOMI gt TAIN 8 58 9 140 4 T 002 H4 002 D4 003 A1 T20UT i 3 Ne 4 002 05 002 H3 8 9ooog Hr3B AR 2 AVDD_MemPLL AVDDA 2 3 Ir 2 VDD MPLL LS Ne 5585 2999 HOXN 137 4804 42 5 8 997 AVDD MemPLL gt 1 AVDDA gt 1 96 NC 19 19 anoo eua 136 ARIO 002 H5 002 06 002 D5 008 04 x XO lt lt lt uu 00 1 655 NC
23. 30 S peaker Bottom 1 8 X16151078830 Stand 1 9 X16HU 0212910 Trans Connecting Board 1 10 X16HU 0495310 Analog Board 1 11 XI6HU0162010 Power Board 1 12 15293000042 Power S witch 1 13 15944029010 User Manual 1 14 6010 03507 Remote Control 1 Only the parts in above list are used for repairing Other parts exceptthe above parts can t be supplied 07 LCD 32XR7 PART LIST EXPLODED VIEW LCD 32XR7 6 jBackcabnet 0 0 0 8 9 Trans connectingboard PARTS LIST LCD 32XR7 ver 1 0 REF No PARTS No DESCRIPTION QTY REMARK 1 50632 202 Front Cover 1 2 6 0050910 Infrared Receiving Board 1 3 5 1 320 1 104 4 6 00490150 1 5 6 00230510 1 6 5 32 02 1 7 16170658030 S peaker Bottom 1 8 X16151077740 Stand 1 9 X16HU0212910 Trans Connecting Board 1 10 X16HU 0495310 Analog Board 1 11 X16HU0212010 Power Board 1 12 15293000042 Power S witch 1 13 X15944029070 User Manual 1 14 6010 03507 Remote Control 1 Only the parts in above list are used for repairing Other parts exceptthe above parts can t be supplied 07 SANYO Electric Co Ltd Jun 2007 30 CPS
24. C RxD gt 4 1 4 002 4 004 D4 ADJ_PWM2 004 1 PWM3_PANEL 304 PI5V330 SCART1 L 001 A7 SCART2 L 001 45 5 1 001 47 SCART2 R 001 45 302 HEF4052BT 16 BCB47AW v304 gt R310 iK R331 iK BCB47AW V305 303 10 44 gt 5 T5V STBY1 gt 9 9 1 SCART L 003 45 003 18 SCARTA SW 003 L3 DVBA SW SCART R 003 45 TIMING 003 18 ADJ PWM2 002 2 003 7 gt In 002 341 003 08 1301 STPB3216 3B0PT L302 STPB3216 380PT ITY N303 AF 49530 FOR THE 12V POWER PANEL PANEL 304 DF14 30P 1 25H 1 VCC VCC VCC V303 BC847AW VCC VCC GND GND GND GND GND GND GND RX3t RX3 RXCLKt RXCLK Rxet 2 RXi 1 0 RX0 GND ODSEL2 ODSEL 1
25. E a OY me ys IL T 850 D 5 ES 1 2 58 E ex 0 1 R51 tn 5 ME AH 6 8 5 58 99 68 1 oie T E PAP 1001 843 5 1 ale 004585 ju 7 sk 2 r ein E Pb1 1 lt 100 8 847 t L 3 854 100 Men Y 880 820 dli 0 soon 100 n uir dod ae L xw 7 MMBO1204 138 4 7K 689 47 4 8 Ya 24LCSatA SN E 18 LOUT 3 Vi vcc 22 toon 10v 7 m Vouk 1 scan T E sa 3 5 SCART2 BOARD DOG s E scanta y 1 C van 874 DATAREQUES DEC 830 831 3541L 01 020 03 AE 58 003 4 i 00345 PESDSVOL 406 ye lt gt p 4 E Mint T Es c Scat VIN S 5 seo CH be 8 10 840 10 E y 1 i 1 ton 10 us lt 86 m n PS 18 Y Y osos CONNECT TO ANALOG BOARD SCARTI RO gt T i 5 LO las ve lt 5 CH5 m lt 8
26. IT a maaa aa HHHH OOODOOOOONNUWE 7 100 R510 m 111185 BBBBEXCXxX zzt 222 29 2222 2222 ZZ 42 3 3V 45V 1 1 In ges onoooooogoaaan 666 0000 666 0000 y AVDD SIF 3V 400 8844 BXD o 2 3 1 BIS 86 ok 0006 omm wel ox m br le lt ruku Simimimi eim 811891 2 002 H3 001 A9 002 A1 n850 PET care lt vIDEO_ HS 002 H2 002 2 004 08 3 001548 sc_rs 22897 1 gt SCARTA SM 004 03 001 PM25VF040 4 CO A SW ez AK By 1 V 4 2 0 58 004 84 002 44 004 05 13 3 Ren 2 ES ME 1 gt TIMING 1 so Hope 8 LUES 004 04 4 m 3 s 4 gt BLK ON RXDO 52 nel 83 pel 4 pet SER 1 001 6 HPDCTRL 1 24032 287 24004 vor T vss 511 4 89 57 re 100 4 gt L 004 AB 8 1 K 4 1 B 6554 ma ma Mt vec gt 8 TO L 001 48 WC 4 d ose sr asss V 6100 1 1 AMP_MUTE so Hoo ies 91 00 001 48 van SDA vss 80 5 1 22122 001 L1 002 A1 Peo page 30 4
27. L The MST9E88L is a high performance and fully integrated IC for multi function LCD monitor TV with resolutions up to SXGA WXGA 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 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 mode requirements and spread spectrum support for EMI management 4 ECE Beas 82 amp 89090 2222222222 65 2223535555230892 3 11 RXCKN 127 PwM2 RXCKP 11251 0160 8 57 2551 01607 RXON 195 DIGO 6 5 15 01605 57 157 01604 155 DIGO 3 5 DIGO 2 GND 5 181 DIGO 1 RX2N 11 153 DIGO 0 mop 52 AVDD GND REXT 199 VDDP DDCD DA Dz 79 ck 3514 Eos Int HSYNC1 16 DDCA CK VSYNCI 1125 DDCA DA RMID Ge DDCR CK VCLAMP 193 DDCR DA REFP REFM 2 1 1721 221 sans SAR2 SOGIN1 165 SARL
28. N 50 ZOOM FULL TTX LANGUAGE WEST OSD HALFTONE 50 SOUND MODE STANDARD BLUE SCREEN OFF OSD DURATION 15 Working principle analysis of the unit The RF signal received by antenna will be sent to tuner 401 then IF signal will be obtained through high amplifier and mixed frequency through pre intermediate amplified by 408 then it will be sent to acoustic surface wave Z407 to do IF filter and get better IF characteristics then it will be sent to 404 TDA4470 to do intermediate amplification phase locked loop VCO and synchronous wave detection to get video signal TV V after pre intermediate amplification IF will also be sent to acoustic surface wave Z406 to do filter at the same time then it will be sent to N404 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 NS4 MST9E88 L Video signals of AV1 S VGA YPbPr and HDMI will be sent to MST9E88L too Video RGB of SCART1 S Y 5 of SCART2 will still be sent to MST9E88L and the audio signal of them via audio switch N302 HEF4052BT selection after also sent to MST9E88L The main IC 54 5 9 88 is 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 lo
29. SANYO FILE NO SERVICE MANUAL LCD 26XR7 PRODUCT CODE No 1 682 343 90 PAL SECAM LCD TV 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 5 Safety INS MUCHONS ss Adjustment IWSHUUCt N Sasa un asun ape voe working principle aralysls ress Ese Vau a euren edo OR vous ERE PER Tx IG block diagram Troubleshooting guide source 19141 1 1 19 61 7 5 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
30. VGA D gt lt z 6 amp 2 667 GHU25 0 15 667 329HU25 20 5 8 85232 5 9 58 0 HD X6 x LS FOR 32 CMO 12 10 6 10 6 O T 2 u R 0 81 5 2 L RF X405 X406 X404 9 a a 5 LINE OUT CABLE 9 9 gt 29 gt 0 9 667 GHU25 53 2 X409 SPEAKER 5 a Ye SCART1 IF adjust Trouble shooting 1 Fault 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 Check if there are failures with the electrical connector the antenna Check if the 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 Possibly due to interference from automobile train high bright spots voltage transmission line neon lamp etc Maybe there is interference between antenna and power supply 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
31. 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 connection 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 connectors or components fixed by the thermotropic glue need to disengage when service please soak the thermotropic glue into the alcohol a
32. g Vi SIF2 ViSIF2 Rcomp Vo AM Vo FM Vs VAFC CRef GND Symbol Function 1 2 Vi SIF1 SIF1 input symmetrical 3 Input selector Switch 4 9 16 GND Ground 5 CAGC SIF AGC time constant 6 7 VIF input symmetrical 8 Cacc time constant 10 Take over point tuner 11 Teun Tuner AGC output current 12 Video 13 Vsw Standard switch 14 Vsw L switch 15 1 16 6 17 Internal reference voltage 18 LF Loop filter 19 Vew AFC switch 20 21 Vvco VCO circuit 22 VAFC AFC output 23 Vs Supply voltage 24 Vo Intercarrier output 25 Vo AM output sound 26 Rcomp Offset compensation 27 28 Vi SIF2 SIF 2 input symmetrical 12 Wiring diagram LVDS 30 PANEL 13 X401 55 X304 Oot HOME 22 oF 2 3 L R
33. g 5 8 8 8 oa oj g g A 5 8 z E 717 sce 8 8 a 1 8 d E R487 0 SC FS 508 lt n 0 0 1 2 3 T SCARTI L amp d AMP_MUTE PH_DECT SCAAT4_LOUT AMP_LOUT AMP_ROUT 470 1 5 5 SCART4_ROUT 48 4 8 HJ 2105W 0446 RT z 22 8 X403 BSS138LT1 lt o 515 8494 us 8 19 6 4 7 2 F 48 4 7 7 7 7 47K 1 8495 4 GND D 8 8 C448 5 5 5 5 58 55 744 4 38403 R406 8413 1841 1 8420 8415 4 7K BSS 38LT4 gi it roat R470 8489 8488 82 E ett Que ict AMP_VCC1 5 2 5 2 STPB3216 380PT svt 55 4 4 3 0440 100 4700 mrss tou 16V 3 1413 1 405 7 7 d 1 PESDBVOLSUY PESDSVOLSUY 4oon T GND D R460 C443 7722 GND we 403 7 2 257 Se lt 458 407 4 4 1 20 5448 LOW SS 5 1 PGND1 5 5 ne 2 s BT ge wl GND D Sut Hia SS 6 777 1 414 001 1777 GND x410 ton END D 5 851 15 5 ae 615 S t Hr ms L 2 407 4 GND D 7 PEND2 777 GND SST
34. he state of white field and its dark size remains unchanged 4 Definition of two neighboring points Defects of a group of picture elements RB RG GB 16 3 Troubleshooting guide 3 1 No raster Turn on power supply check if the red indicator is light in the STANDBY Check if PIN3 5V of 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 12 of X301 in main board is high level yes Check back light board no Replace NS4 Check N102 and its red Check if the PIN11 of X303 in main board is high level yes Check power peripheral circuit 17 supply board 3 2 Raster but no picture Check if the unit button Does display OSD and remote control menu in screen when operation press menu button Check if the all channels have signal um 1 HDMI VGA YPRPB Enter factory menu Which is no signal initialization EEPROM of channels Replace then turn off the TV main board turn on again display Replace picture main board Adjust main board again Check if signal and noise wave of 405 8 in the TV board Check if output Check TUNER401 IF signal of and its periphery pin 11 is normal Check N404 and 155 periphery 18 3 3 sound Check if PIN2 8 13 and 18 voltage of N405 i
35. 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 Identification criteria for the bright spot and dark spot of the LCD screen mn Quantity allowed Distance between two spots Category Criteria 15 20 22 30 40 15 20 22 30 40 single 55 lt 2 lt 5 lt 2 lt 3 spot Bright id 215mm spot neighboring 52 1 52 1 1 spots Total No 55 lt 2 lt 5 lt 2 lt 3 6 i 215mm nesnge lt e lt s s4 lt 10 spot Dark T gt 10 25mm spots neighboring 52 52 52 1 5 spots Total No lt 6 lt 7 lt 5 lt 4 lt 10 Total defected point s8 lt 7 lt 5 lt 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 it is dark in t
36. n 0 no LOGO display ADC PRESCALE 00A Adjust according different power consumption SIF PRESCALE 000 Adjust according different power consumption BACK LIGHT 28 Adjust according different screen 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 ISP 0 0 no unit upgrade on the assembly line 1 unit upgrade on the assembly line NO STANDY 00 01 turn on 00 memory function of turn 10 standby INIT VOLUME 0 100 Volume of turn on INIT CHANNEL 1 200 Channel of turn on INIT SRC Source Source of turn on EEPROM MEMORAY EEPROM Initialization operate when EEPROM data chaos RECALL 3 2 Adjustment for AFT voltage and AGC voltage of IF channel in TV 3 2 1 IF AFC adjustment Disconnect J401 B face input 38 9MHz PAL signal of 80dB from J401 near the socket Adjust 1404 to value 0 9V of 402 Enter factory menu adjust TDA4470 from BG to LL input 33 9MHz SECAM signal of 80dB adjust 402 to value 0 9V of TP402 then wed J401 3 2 2 IF AGC adjustment Input 184 25MHz RF signal of 60DB from RF terminal adjust RP401 to value 4V of TP404 and there should be no obvious snowy picture Increase the signal to 90DBV and it should be display normally and no obvious noise 3 3 White balance adjustment 3 3 1 white balance adjustment of HDMI a Input VG 848 signal from HDMI TIMING854
37. nd then pull them out in case of dagame 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 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 Scope for storage 20 60 Humidity Scope for operation 20 8596 5 for storage 10 90 2 13 Display of a fixed picture for 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 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 sc
38. rew 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 trouble 3 5 Be sure to protect the cabinet from damage or scratch during service dismantling or mounting Alignment instructions 1 Test equipment PM5518 video signal generator VG 849 signal generator CA210 white balancer 2 Alignment flow chart The alignment flow chart is shown as fig 1 Preset ex factory 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 to select adjustment items and press VOL and to adjust value items 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 o
39. s normal Check power supply Check PIN3 PIN7 output wave of Check N405 and its N405 periphery Check PIN24 wave of N404 Check NS4 and its periphery Check N404 and its Check PIN11 wave of periphery TUNER401 Check TUNER401 and its periphery 19 t 002 A1 003 B9 5 MO Ea 23 854 002 41 003 89 ES AA k 003 45 E pESD5VOL5UY 1000 lt d 5 5 ME 003 45 Men y N 1 v H vi 1 is s us T
40. 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 front of the TV set See if it s receiving the signal that is transmitted from other source than the station Check if it s connected to the wrong terminal or if the input mode is correct Check if the 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 Check to 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 signal 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
41. w voltage differential output ect And it also has functions of audio selection processing and MCU The video signal MST9E88L 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 AV processed by MST9E88L via double video amplifying will be sent to SCART2 for AV OUT too Audio signal MST9E88L processing will be sent to sound amplifier 405 MP7722DF amplifying to speaker The audio also sent to earphone amplifier N406 BH3547F amplifying to earphone TV audio signal will be sent to D A converter 56 054344 through 125 bus converting to analog audio signal TV L R then sent to SCART1 for AV OUT At the same time TV L R together with AV L R processed MST9E88L will be sent to audio switch NS8 HEF4052BT after selecting to SCART2 for AV OUT Block diagram POWER MEG ATMEGSL EDID EDID 24 02 24 02 HDMI DDR VGA FLASH BUDE HDTV SW DTV 5 330 EEPROM SCARTI RGB LCD TV CONTROLLER SCARTI AV SCARTI L R NUI SH MST9X88LD HEF4052 SCART2 L R SCART2 Y PANEL SCART2 C AUDIO 5 7722 TUNER SAW SPEAKER IF AMP SPEAKER TDA4470 TV SIF L R VGA Bd HP AMP L R AV1 S AV L R SCARTI V OUT Sap TV IIS AUDIO SW SCART2 L R OUT HEF4052 SCART2 V OUT 5 D A SCARTI L R OUT CS4334 TV LIR block 1 MST9E88
42. wing 180 power MOSFETs Startup Shutdown pop elimination Short circuit protection Mute Standby The MP7722 utilizes a single ended output structure capable of delivering 2 x 20W into 4Ospeakers MPS Class D Audio Amplifiers exhibit the high fidelity of a Class A B amplifier at efficiencies greater than 9096 The circuit is based on the MPS proprietary variable frequency topology that delivers low distortion fast response time and operates on a single power supply TYPICAL APPLICATION CH1 INPUT MP7722 OUTPUT REF2 CH2 INPUT CH2 MP7722 1 VIEW MP7722_PD01 EXPOSED PAD CONNECT PGND Part Number MP7722DF TSSOP20F 40 C to 85 10 3 4470 4470 is 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 AGC g Video det HHI AGC Standard switch SIF 2 Intercarrier NICAM SIF input switch O SIF 1 AF AM Figure 1 Block diagram 11 Description Figure 2 Pinnin
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