XOCECO LEC3205 Service Manual Download Page 19

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Main assembly

NAME

NO.

MAIN COMPONENT AND it’S NO.

AV processing board

667-L32K5N-40

N201
N202
N204
N205

MSP3410

（

353-34100-80

）

M62494FP

（

353-62494-20

）

MPS7720

（

353-77200-10

）

CPU board

667-L32K5N-56

U12
U13
U15
U29
U30
U31

U2
U4

JAG-ASM (353-0JAG0-00)
FLI2310 (353-23100-00)
TFP501 (353-05010-00)
VPC3230D (353-32300-80)
MST9883B (353-98830-10)
DS90C385 (353-03850-20)

TSC80251G2D (353-80251-10)
AT49F002NT (352-49002-70)

IR board

667-L32K5-09

Keypad board

667-L32K5-05

USB board

667-L32K5-16

Power supply board 667-L3

K7-20

Remote control (

RC-U38R

)

301-UL27K6-38R

Panel (

LTA320W2-L01

)

335-32001-00

Summary of Contents for LEC3205

Page 1: ...LCD TELEVISION LEC3205 LC 32K5...

Page 2: ...grading LC 32K5 working principle analysis LC 32K5 block diagram IC block diagram Main assembly Identification criteria for the bright spot and dark spot of the LCD screen Wiring diagram Troubleshooti...

Page 3: ...will result 2 5 If any foreign substance such as water liquid metal slices or other matters happens to fall into the module be sure to cut the power off immediately and do not move anything on the mod...

Page 4: ...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...

Page 5: ...signal then select the mode item after that you can press enter to select three kinds of color temperature namely 6500K 9300K and 12000K press MENU to exit Note the white balance adjustment should be...

Page 6: ...let the color coordinate of the third level be 285 and 290 and its brightness be 16nit more or less Adjust gain_R gain_G and gain_B let the color coordinate of seventh level be 285 and 290 Select 1200...

Page 7: ...are channels be skipped 4 2 AV S YpbPr terminals Input AV S HD signal check if it is normal 4 3 VGA terminal Insert VGA terminal input VGA format signal of 640 X 480 60 Hz check if the display is norm...

Page 8: ...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...

Page 9: ...y connected or if it has received the video signal correctly Blur picture Check if the antenna cable is correctly connected Of if it has received the right video signal No sound Check if the mute audi...

Page 10: ...be 115200 Then select Reset Target After Download Click FLASH pushbutton it s ready to run For other settings please refer to the Fig Above already defaulted by the system normally no need to change S...

Page 11: ...should be sent to U12 together with he above two kinds of signal that is RGB signal of 24BIT produced by DV1 through U15 TFP403 501 Do the picture format processing for the three kinds of signal in U1...

Page 12: ...I R L AV R L OUT U15 DVI DRIVER TFP403 U12 SCALER JAG ASM U29 VIDEO DECODER VPC3230 U30 ADC MST9883 U13 DEINTER LACER FLI2310 U14 SDRAM U19 SDRAM U20 SDRAM U31 LVDS DRIVER DS90C385 U3 EEPROM N01 AUDIO...

Page 13: ...l the operation of IC 27 28 PIN output left and right sound channel R L to speaker processor 36 37 PIN AV OUT of sound R L 47 48 PIN D4 1 D4 2 PCMCIA selected input R L 50 51 PIN Input of VGA R L 53 5...

Page 14: ...73 PIN Input Y of PCMCIA 6 PIN Input V of PCMCIA 31 34 37 40 PIN output format signal of ITU R656 70 PIN Video of AV OUT 71 PIN Input C of SVHS 72 PIN input Video SVHS in priority of Y or AV1 of SVHS...

Page 15: ...13 3 AD9883...

Page 16: ...14 4 FLI2310 Simplified Internal Block Diagram...

Page 17: ...15 5 JAG ASM...

Page 18: ...16 6 Z86229 Pins description 7 PIN VDIEO INPUT 2 PIN G OUTPUT 3 PIN B OUTPUT 18 PIN R OUTPUT 17 PIN FB OUTPUT...

Page 19: ...K5N 56 U12 U13 U15 U29 U30 U31 U2 U4 JAG ASM 353 0JAG0 00 FLI2310 353 23100 00 TFP501 353 05010 00 VPC3230D 353 32300 80 MST9883B 353 98830 10 DS90C385 353 03850 20 TSC80251G2D 353 80251 10 AT49F002NT...

Page 20: ...mm 5mm Total defected point 8 7 5 4 Notes 1 Definition of defected point bright spot dark spot It is identified as a defected point if its area exceeds 1 2 of a single picture element R G B 2 Definiti...

Page 21: ...19 Wiring diagram AV processing board Power supply board To speaker To earphone CPU board To Keypad board To IR board...

Page 22: ...supply board Check the indicator in turn on condition Check if the indicator is flicker in the sensor control normal condition Check if the CN905 output 24V Check if the PIN26 30 of P4 is high level...

Page 23: ...ower supply 5V V of video processing board Check input 22V of sound conversion board Check input 12V A of CPU board Check output 24V A of power supply board Check if PIN2 1VPP signal and noise wave of...

Page 24: ...2V of N04 and N05 Check power supply Check PIN5 and PIN8 output of N02 Check PIN27 and PIN28 output wave of N01 Check PIN67 wave of N01 Replacing TUNER01 Replacing N04 and N05 Replacing N02 Replacing...

Page 25: ...23 Exploded views LC 32K5 1 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26...

Page 26: ...el trans connecting support 803 10245 00 11 Guide orbit 870 30146 00 12 Digital board baffle 808 60892 00A 13 Digital board assay 667 L32K52 56 14 Power supply board assy 667 L32K5X 20W 15 Speaker ass...

Page 27: ...B4301 11 12 PINS LEAD WITH HOUSING 655 TE302 15 10 PINS LEAD WITH HOUSING 665 D0002 423 AUDIO LINE XH 3 5 RCA 2000 665 D0002 546 LVDS LINE 30 PINS160mm 666 13001 00 FERRITE BEAD TY30X20X10 700 60241...

Page 28: ...M3X8 Y 852 43008 84 SCREW F M3X8 Y 852 43008 84 SCREW F M3X8 Y 852 43008 84 SCREW F M3X8 Y 852 43008 84 SCREW F M3X8 Y 852 43008 84 SCREW F M3X8 Y 852 43008 84 SCREW F M3X8 Y 852 43008 84 SCREW F M3X8...

Page 29: ...1 00 ACCESSORY BOX 15L 886 31729 430W CARTON BOX LEC3205 LEGEND 886 31730 00 CARTON BOX BOTTOM COVER 887 20047 01A ACCESSORY PALSTIC BAG 887 21097 P0 PE PEARL COTTONPALSTIC BAG 1200X1050 894 30080 11...

Page 30: ...CTORS TJC10 5A X1 667 L32K5 09 IR RECEIVE BOARD ASS Y SMD 455 12222 H0 SMD RESISTOR FTR0603222JR R2 455 12310 H0 SMD RESISTOR FTR0603103JR R1 456 2410M C1 SMD CAPACITOR 06032E104M250BA C1 782 L32K5 09...

Page 31: ...PACITOR CD110 16V 22uF M C16 464 6D622 M0 ELECTROLYTIC CAPACITOR CD110 16V 22uF M C36 464 6D647 M0 ELECTROLYTIC CAPACITOR CD110 16V 47uF M C123 464 6D647 M0 ELECTROLYTIC CAPACITOR CD110 16V 47uF M C12...

Page 32: ...S N04 353 77200 10 SMD ICMPS7720DS N05 455 12000 H0 SMD RESISTOR FTR0603000XR R02 455 12000 H0 SMD RESISTOR FTR0603000XR R50 455 12000 H0 SMD RESISTOR FTR0603000XR R51 455 12068 H0 SMD RESISTOR FTR060...

Page 33: ...603103JR R60 455 12310 H0 SMD RESISTOR FTR0603103JR R61 455 12310 H0 SMD RESISTOR FTR0603103JR R62 455 12310 H0 SMD RESISTOR FTR0603103JR R63 455 12310 H0 SMD RESISTOR FTR0603103JR R64 455 12310 H0 SM...

Page 34: ...4ZT C52 456 2410R C1 SMD CAPACITOR C1608Y5V1E104ZT C55 456 2410R C1 SMD CAPACITOR C1608Y5V1E104ZT C59 456 2410R C1 SMD CAPACITOR C1608Y5V1E104ZT C62 456 2410R C1 SMD CAPACITOR C1608Y5V1E104ZT C63 456...

Page 35: ...T C84 456 3322K B2 SMD CAPACITOR C2012X7R1H223KT C85 666 12008 00 SMD FERRITE BEAD STBH2012 501PT L27 666 12008 00 SMD FERRITE BEAD STBH2012 501PT L28 666 12008 00 SMD FERRITE BEAD STBH2012 501PT L29...

Page 36: ...CAPACITOR CD110 16V 22uF M C232 464 6D622 M0 ELECTROLYTIC CAPACITOR CD110 16V 22uF M C233 464 6D622 M0 ELECTROLYTIC CAPACITOR CD110 16V 22uF M C234 464 6D622 M0 ELECTROLYTIC CAPACITOR CD110 16V 22uF...

Page 37: ...8470 90 SMD TRANSISTOR BC847AW Q15 342 08470 90 SMD TRANSISTOR BC847AW Q151 342 08470 90 SMD TRANSISTOR BC847AW Q16 342 08470 90 SMD TRANSISTOR BC847AW Q17 342 08570 90 SMD TRANSISTOR BC857 AW Q13 342...

Page 38: ...D ELECTROLYTIC CAPACITOR CDPS 10V 47uF M C492 454 03647 MB SMD ELECTROLYTIC CAPACITOR CDPS 10V 47uF M C493 454 03647 MB SMD ELECTROLYTIC CAPACITOR CDPS 10V 47uF M C494 454 03647 MB SMD ELECTROLYTIC CA...

Page 39: ...22 H9 SMD RESISTOR NCA4R220JR RP33 455 10022 H9 SMD RESISTOR NCA4R220JR RP36 455 10022 H9 SMD RESISTOR NCA4R220JR RP37 455 10022 H9 SMD RESISTOR NCA4R220JR RP38 455 10022 H9 SMD RESISTOR NCA4R220JR RP...

Page 40: ...20JR R117 455 12022 H0 SMD RESISTOR FTR0603220JR R118 455 12022 H0 SMD RESISTOR FTR0603220JR R125 455 12022 H0 SMD RESISTOR FTR0603220JR R165 455 12022 H0 SMD RESISTOR FTR0603220JR R169 455 12022 H0 S...

Page 41: ...R0603101JR R311 455 12110 H0 SMD RESISTOR FTR0603101JR R312 455 12110 H0 SMD RESISTOR FTR0603101JR R36 455 12110 H0 SMD RESISTOR FTR0603101JR R37 455 12110 H0 SMD RESISTOR FTR0603101JR R38 455 12110 H...

Page 42: ...03472JR R229 455 12247 H0 SMD RESISTOR FTR0603472JR R33 455 12247 H0 SMD RESISTOR FTR0603472JR R34 455 12247 H0 SMD RESISTOR FTR0603472JR R7 455 12247 H0 SMD RESISTOR FTR0603472JR R8 455 12247 H0 SMD...

Page 43: ...T C1 456 2410R C1 SMD CAPACITOR C1608Y5V1E104ZT C10 456 2410R C1 SMD CAPACITOR C1608Y5V1E104ZT C100 456 2410R C1 SMD CAPACITOR C1608Y5V1E104ZT C101 456 2410R C1 SMD CAPACITOR C1608Y5V1E104ZT C102 456...

Page 44: ...C16 456 2410R C1 SMD CAPACITOR C1608Y5V1E104ZT C160 456 2410R C1 SMD CAPACITOR C1608Y5V1E104ZT C161 456 2410R C1 SMD CAPACITOR C1608Y5V1E104ZT C162 456 2410R C1 SMD CAPACITOR C1608Y5V1E104ZT C163 456...

Page 45: ...C287 456 2410R C1 SMD CAPACITOR C1608Y5V1E104ZT C288 456 2410R C1 SMD CAPACITOR C1608Y5V1E104ZT C289 456 2410R C1 SMD CAPACITOR C1608Y5V1E104ZT C29 456 2410R C1 SMD CAPACITOR C1608Y5V1E104ZT C290 456...

Page 46: ...1E104ZT C58 456 2410R C1 SMD CAPACITOR C1608Y5V1E104ZT C59 456 2410R C1 SMD CAPACITOR C1608Y5V1E104ZT C62 456 2410R C1 SMD CAPACITOR C1608Y5V1E104ZT C63 456 2410R C1 SMD CAPACITOR C1608Y5V1E104ZT C64...

Page 47: ...JT C5 456 3033H 11 SMD CAPACITOR C1608CH1H330JT C6 456 3033H 11 SMD CAPACITOR C1608CH1H330JT C68 456 3033H 11 SMD CAPACITOR C1608CH1H330JT C69 456 3110H 11 SMD CAPACITOR C1608CH1H101JT C33 456 3110H 1...

Page 48: ...T FB54 666 12008 00 SMD FERRITE BEAD STBH2012 501PT FB56 666 12008 00 SMD FERRITE BEAD STBH2012 501PT FB79 666 12012 00 SMD FERRITE BEAD BG2012B300T FB1 666 12012 00 SMD FERRITE BEAD BG2012B300T FB2 6...

Page 49: ...STPB3216 380PT FB49 666 13207 00 SMD FERRITE BEAD STPB3216 380PT FB5 666 13207 00 SMD FERRITE BEAD STPB3216 380PT FB50 666 13207 00 SMD FERRITE BEAD STPB3216 380PT FB51 666 13207 00 SMD FERRITE BEAD S...

Page 50: ...1 8W 27K J R553 455 22247 H0 SMD RESISTOR RC11 1 8W 4 7K J R533 455 22291 H0 SMD RESISTOR RC11 1 8W 9 1K J R506 455 22311 F3 SMD RESISTOR RC 05K1152FT R520 455 22312 H0 SMD RESISTOR RC11 1 8W 12K J R...

Page 51: ...08 456 3410K B2 SMD CAPACITOR C2012X7R1H104KT C515 456 3410K B2 SMD CAPACITOR C2012X7R1H104KT C537 456 3410K B2 SMD CAPACITOR C2012X7R1H104KT C538 456 3410K B2 SMD CAPACITOR C2012X7R1H104KT C550 456 3...

Page 52: ...1 06C Bn 1KV 101J C555 459 6247K 00 CERAMIC CAPACITOR DE1205B472K1K C531 459 6310R 00 CERAMIC CAPACITOR DE1510E103Z1K C512 459 B147M 20 CERAMIC CAPACITOR ECK DNS471MBX C506 459 B147M 20 CERAMIC CAPACI...

Page 53: ...80 FUSE 50T 4AL 250V FU501 569 22155 00 FUSE 250V 5A FU502 569 34155 00 FUSE 20N 250V 6A FU503 655 81101 14 8 PINS LEAD WITH HOUSING X507 666 13523 00 FERRITE BEAD TB3 5X1X9 L505 666 13523 00 FERRITE...

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