Hisense Group MT5380 manual

LCD Television Service Manual Chassis: MT5380 Product Type: LHDN26W57US (1) --ELCHW261 Ver 1.0 Hisense Electric Co., August, 2009 Ltd.[...]

Contents Contents ....................................................................................................................................................................... - 2 - Service Manual ...............................................................................................................................................[...]

Service Manual 1. Precautions and notices BEFORE SERVICING THE LCD TV, THIS MANUAL• READ THE SAFETY PRECAUTIONS IN USE ONLY MANUFACTURER SPECIFIED REPLACEMENT PARTS WHEN SERVICING. USE OF NON-AUTHORIZED PARTS WILL VOID THE MANUFACTURE'S WARRANTY Proper service and repair is important to the safe, reliable operation of all Hisense Electric Co[...]

techician trained in the proper Television safety and service methods and procedures Hereafter throughout this manual, Hisense Electric Co., Ltd will be referred to as Hisense. 1.1 Warning 1.1.1 Critical components having special safety characteristics are identified with a a_ by the Ref. No. in the parts list. Use of non-manufacturer's recomm[...]

IMPORTANT: Always disconnect the power cord from AC outlet before replacing parts or modules. 1.1.3 To prevent electrical shock, use only a properly grounded 3 prong outlet or extension cord. 1.1.4 When replacement parts are required, be sure to use replacement parts specified by the manufacturer or have the same characteristics as the original par[...]

1.1.6 (1) Do not supply a voltage higher than that specified to this product. This may damage the product and may cause a fire. (2) Do not use this product: > High humidity areas > In an area where any water could enter or splash into the unit. High humidity and water could damage the product and cause fire. (3) If a foreign substance (such a[...]

or sold with the apparatus. When a cart is used, use caution when moving the cart/apparatus combination to avoid injury from tip-over. 1.2 Notes Notes on Safe Handling of the LCD panel and during service The work procedures shown with the Note indication are important for ensuring the safety of the product and the servicing work. Be sure to follow [...]

sure to confirm that there is no foreign matter on top of the cushioning materials before the surface of the panel comes into contact with the cushioning materials. Failure to observe this precaution may result in, the surface of the panel being scratched by foreign matter. • Be sure to handle the circuit board by holding the large parts as the h[...]

2. Product Function Specifications 2.1 Product Function Front Cabinet -9- Input _l_tion Volume Up Volume Down Channel Up Channel Down Power(On/Stand by) _Remote reviver[...]

Back Cabinet AC INPUT 2.2 Specifications -10-[...]

Appendix Model Diagonal display size Television system Audio multiplex Channem coverage PC mode YPbPr/YCbCr mode HDMI mode Resolution Power source Power consumption Audio power RF input Video input ELCHW261 26 Inches American TV standard ATSC/NTSC system BTSC system VRF: 2_,13 UHF: 14_,59 CATV:lN125 Digital Terrestrial Broadcast (8VSB): 2_-_59 Digi[...]

3. LCD Panel Spec Panel: M260TWRlROH SN 1061384 3.1 General Description The M260TWR1 is a color active matrix thin film transistor (TFT)liquid crystal display (LCD) that uses amorphous silicon TFT as a switching device. It is composed of a TFT LCD panel, a timing controller, voltage reference, common voltage, DC-DC converter, column driver; and ro[...]

3.2 General Features Product Summary Screen Diagonal Active Area Pixels H x V Pixel Pitch Pixel Arrangement Disp_a_ Mode White Luminance Contrast Ratio Response Time Logic Power Consumption Boc ght Powe, i_:i:ii2iih, iii{i;{" Outline DimensQB Electrica_ Inte_ace (_ic) Suppo_ Co_or ....... _i_1 Viewing Direction : Su_ace Treatment 26 575J69 (H)[...]

4. Chassis Layout and Overall Wiring Diagrams Boards and Chassis Layout No Description Part No. Type/Model PCB/Model (1) Main Board 121477 RSAG2.908.1553-2ROH RSAG7.820.1730VER.DROH (2) Power Board 122630 RSAG2.908.1498-2ROH RSAG7.820.1646VER.CROH (3) Keypad Board 113354 RSAG2.908.1088ROH RSAG7.820.1101 VER.BROH (4) IR Board 116295 RSAG2.9[...]

5. Factory/Service OSD Menu and Adjustment 5.1 To enter the Factory OSD Menu a. With factory RC (remote control) 1. Press "M" button and enter factory mode. 2. Press "Menu" button and enter factory OSD menu. 3. Press "CH+"/"CH-" button select the function menu, press "VOL+"/"VOL-" enter th[...]

5.2.2 Factory Option 1 Item Default Options MODE M M, U Notes M-Can enter factory mode with factory RC or user RC. U-Can enter factory mode only with user' s RC. Note: MODE "M" is only used for factory production. 5.2.3 Version Info Item 1 Version 2 Date Note: Software version info of the TV, Default Options Note Software version The[...]

Offset: TV AV S-Video Component VGA HDMI R Offset 116 116 116 121 124 120 G Offset 124 124 124 125 126 128 B Offset 124 124 124 125 127 128 Cool: TV AV S-Video Component VGA HDMI R Gain 119 119 119 141 127 120 G Gain 125 125 125 145 120 122 B Gain 145 145 145 160 145 147 Warm: TV AV S-Video Component VGA HDMI R Gain 134 134 134 156 142 135 G Gain 1[...]

5.3.3 Picture Mode TV AV S-Video Component VGA HDMI Vivid Bright 55 55 55 55 55 55 Vivid Contrast 55 55 55 55 55 55 Vivid 55 55 55 55 55 55 Saturation Std Bright 50 50 50 50 50 50 Std Contrast 50 50 50 50 50 50 Std 50 50 50 50 50 50 Saturation Hovie Bright 45 45 45 45 45 45 Hovie 45 45 45 45 45 45 Contrast Hovie 45 45 45 45 45 45 Saturation 5.3.4 V[...]

6. Software Upgrading The software is upgraded by a burning toll-MtkTool, which can burn the program file *.bin to the main board of the unit. 6.1 Get ready for upgrading 6.1.1 Install the driver Double click the icon _L-2303 Briver , install the driver. PL-2303 Driver Installer Setup is: preparing the InstallShield? Wizard° _,,,hieh ,,,_ill guide[...]

For the first connecting, the pc will recognize and automatically install the USB device. The process is just like the installation of a mini disk, see the following picture. The -.vizard is installing software, Please wait.... _rzpi. _y_ Last $1,_)(1_) N e xt Nt_o['l',I) Ca.ncel_ _ Finish Finding New Hardware _/_¢Szard+ _ The wizard has[...]

6.2 Upgrading with the MtkTool MTKtool is a green program needing no installation• It is saved in the folder MTR_00L_20061027 • There are five folders/files in this folder altergether. !_{_.__ ........ A _: fl_shin£ ini MtkTool. ird Shortcut to [ i_!7 !):_'_ i_ L2:?'_ MtkTool, exe !=_+_ i' [i :h_tkTool. exe The MtkTool using log[...]

5--Click the browse button to select the *.bin file that will be updated. 6--Click the "start" button to update software. LoadBin file: Backup file: -21 - Check Sun _ Verify _ BlankCheck I_ High Speed USB to UAFIT Bridge Controller I_ ShakeHand Custom Burning Address [HEX) Custom Burning End: Direct Control[...]

Open "Device Manager" and find which port is connected with the TV. In above picture, COM4 is connected to the TV; so, select "COM4" in the MtkTool main interface. Select the right baud rate according to chip model. For this unit( chip model is MT538X), select 115200. Note: Where or not click the "Auto Set Flash Baud Rate&q[...]

Fort Baud Rate i Browse i _ Upgrade CheckSum >7 USB to UART Bridge Conl:rol!e[ £hakeHand Bumi"g AdS(eis! _ _[HEX] Cu=OmBU'oiOg End: !HE× ....... ClearMSG Click "Browse" button, find the upgrading program file, and select it. Press "Upgrade" button and start upgrading. The following interface appears on the screen,[...]

7. Troubleshooting 7.1 Troubleshooting for Remote Control NO YES YES YES NO YES NO - 24 -[...]

7.2 Troubleshooting for Function Key YES l YES - 25 -[...]

7.3 TV won't Power On NO NO NO l YES - 26 - No I Neither I works NO NO Both Work[...]

7.4 Troubleshooting for Audio YES NO YES NO NO YES NO l YES - 27 -[...]

7.5 Troubleshooting for TV/VGA/HDMI input NO No I YES r- - 28 -[...]

7.6 Troubleshooting for YPbPr input YES YES NO - 29 -[...]

7.7 Troubleshooting for Video/S-Video input NO y YES YES YES NO -30-[...]

8. Explode View and Explode Bom List 9. Schematic circuit diagram -31 -[...]

tm_ _ _z_ LT_[...]

PARTS LIST ELEMENT ELCHW261 Description Qty. front cover 1 lens led 1 IR Board Unit 1 bracket 2 LCD Panel 1 Power Board unit 1 bracket unit 1 bracket 1 bracket unit 1 back cover 1 Unit 1 bracket 1 power cord 1 cover board 1 Key board unit 1 Key bracket 1 speaker 2 cover board 1 base unit 1 back label 1 side label 1 No. Part No. Code Number Remark 1[...]

] I 01 :INDEX/POWER IN 02:DIGITAL/ANALOG POWER 03:MT5380PERIPHERAL 04:DDR1 MEMORY 05: FLAS H/JTAG/UART 06:ANALOG PLL/USB2.0/TUNER 07:LINE OUT/HP 08:AMP/MUTE 09:LVDS/HEADPHONE 10:YPBPR INPUT 11 :VGA IN/LR 12:HDMI INPUT 13:AV/SV IN FROM AV BOARD 14:1R/KEY _MT5380_2LAYERS 2,3,4,5,6,7,8,9,10,I1,12,13,1@ND << _>_> / 2,7,8,9,13 +12V << [...]

+5V 3 CE4 i 100uF/16V GI IN _ OUT 2 OUT < AZ1117/ADJ DV33 t IR19 iCE 5 it9 iiio4o?ou ,16 2oo ,o4o 300R/0402 +5V ? ? 4,C 6v T 9oo o4o __ i0n_'0402! 4 iC17 T00nF/0402/NC f N4 Vcc O/P O/P OCSET z _ # FB uJ >> L ___P1534 C20 100nF/040 t - N5 +5VSB z OUT i 3 IN _ OUT 1 AZ1117/ADJ CE 1 3 l I 100uF/16V 'R29 , + CEll ,180R/0402 _ 100uF/1[...]

OSDA0 ?f16 OSCL0 ?f)7 OSDA1 63 OSCL1 6? OPWMt ?f14 OPWM2 ?f15 OXTALO OXTALI 146 AVCC SRV 149 AVDD33 XTAL147 ADIN3 15,t _C i ADIN2 152 37 ADIN1 151 I 0 2.__ C38 PWRDET 150 0nF/040 F/0402 _ AVDD33 REG88 C XREG 87 _._C61 ORESET# 71 OPWRSB 7? --_nF DV33 / R48 1 K/040,I R56 2K7/0402/NC "PWRDET N11B OSDA0 OSCL0 OSDA1 OSCL1 OPWM0 OPWM1 OPWM2 VC[...]

RDQS0 11 RDQM0 13 RDQ0 9 RDQI ,5 RDQ2 7 RDQ3 6 RDQ4 ,5 RDQ5 4 RDQ6 3 RDQ7 ? RDQS1 17 RDQM1 1,5 RDQ8 1,9 RDQ9 ?f) RDQI0 21 RDQ11 22 RDQ12 23 RDQ13 24 RDQ14 ?5 RDQI5 ?6 MEM VREF 53 RCS# 46 N11A RDQS0 RA0 RDQM0 RA7 RDQ0 RWE RDQ1 RBAO RDQ2 RA6 RDQ3 RBA1 RDQ4 RA5 RDQ5 RRAS RDQ6 RA8 RDQ7 RA10 RDQS1 RA4 RDQM1 RCAS RDQ8 RA12 RDQ9 RCKE RDQ10 RA11 RDQ11 RA9 [...]

1 1 I [ POCE0# POOE# PDD0 PDD1 ?fi? ?ill ?fi0 249 N11J POCE0 UORX POOE UOTX PDD0 PDD1 OIRI JTMS JTRST JTCI< JTDO JTDI MT5380 SMD LQFP 95 UORX 94 UOTX 93 OIRI 253 JTMS JTRST# 256 JTCK 265 JTDO 264 JTDI JTDO JTRST# JTMS JTDI JTCK R82 33R/0402 DV33 POCE0# 1 R0/0402 2 3 GND 4 RN19 10K/NC R-RESCA3216-8N-HX ' R83 > 10K!0402 N14 i. vo l ' [...]

1 1 I [ N11D USB VRT 65 I ] AVDD12 PLL USB DM 65 I USB VRT AVDD12 ADCPLL I 162 USB DP 66 I USB-DM AVDD12-TVDPLL 157 AVDD12 PLL AVDD33 USB 67 I USB-DP AVDD12 FiDMPLL 155 AVDD12 PLL AVDD12 USB 6,9 I AVDb33 USB AVDD12 APLL 16,3 AVDD12 PLL 2 AVDD12-USB AVDD12 SYSPLL 161 AVDD12 PLL #P _ TP0 - AVUU12- DMPLL 155 AVDD12 PLL TN0 AVDD12SKDPLL 156 AVDD12 PLL [...]

GND _L N11G AIN0 L AIN0 R AINt L AINt R AIN2 L AIN2 R AIN3 L AIN3 R AVDD33 AADC AVSS33 AADC VIMD AADC REFP AADC REFN AADC 179 AINOL 176 AINOR 177 AINI_L 176 AIN1R 175 AIN2_L 174 AIN2R 17,3 AIN3L 177 AIN3 R 171 AVDD33 AADC 1f!,3 AVSS33 AADC 1f!l VMID AT, DC lf!? REFP_AADC lf!0 REFN AADC ASPDIF AOMCLK AOLRCK AOBCK AOSDATA0 ALl AR1 AL2 AR2 AVDD33 ADAC[...]

+5V +12V R147 l 1K/0402/NC L R155 0R0/0402/NC/ ] c R148 220R/0402 R150 1K/0402 VD9 1N4148 VD7 1 LJ 12 1N41V/8 ] R156 ) _ 56K/0402<__ .1. VD_ _ -1N_I48/NC 1 R151 0R0/0402 + CE44 220uF/16V R157 47K!0402 OPCTRL3 V8 ? 39[ CE43 VD4 _ _- - 22_ 1 4148 ]_ lVD_4 __ 1%10410402 VD8 nOFF MUTE1 bJ / Ti _ 1N4148 VD10 1N4148 R158 0R0/040£ C175F"1 I IOOnF[...]

A0N 244 A0P 243 A1N 242 AlP 241 A2N 239 A2P 236 CK1N ?37 CK1P 236 A3N 236 A3P 234 A4N 233 A4P 232 A5N 230 A5P 229 A6N 226 A6P 227 CK2N ??6 CK2P ??5 A7N ??4 A7P ?P3 NllC A0N A0P A1N AlP A2N A2P CK1N CK1P A3N A3P A4N A4P A5N A5P A6N A6P CK2N CK2P A7N A7P AVDD33 LVDSA AVDD33-LVDSB AVDD33]LVDSC AVDD33 VPLL TP2 TN2 MT5380 SMD LQFP 227 AVDD33 LVDS 231 AV[...]

soYo 107 YOP 1Oh YON 1Q£ PBOP 114 PBRON 115 PROP 116 SOY1 11_ Y1P 11£ Y1N 170 PBtP 171 PBR1N 177 PR1P 123 TP19 TP20 N11E SOY0 DVDD12 VGA Y0P AVSS12_RGBADC YON AVDD12 RGBADC PBOP AVSS__RGBFE PBRON AVDD12_RGBFE PROP SOY1 RP Y1P RN Y1N BP PB1P BN PBR1N GP PR1P GN VSYNC TN1 HSYNC TP1 SOG MT5380 SMD LQFP 117 DVDD12 VGA 113 AVSS12 RGBADC 110 AVDD12 RGB[...]

UOTX UORX R201 100R/0402 VGASDA IN HSYNC# VSYNC# VGASCL IN R205 100R/0402 HSYNC# Ir ) 11 o o ) 1? o o ) 13 o o ) 14 o o ) 15 o o- __---- _L XS6 D-SUB15 6 RED GND 1 RED 7 GRN GND ? GRN 8 BLU GND 3 BLU 9 4 _ jr D14 k. 10P __ _--- VD12 1N4148 L40 R211 = f.ym HSYNC t 680R/0402 I 120R _ D016 </214 0228 0K!0402 5pF/0402 VSYNC# R219 L42 680R/0402 I 120[...]

1 [ T 1 N11K RXOB 79 RXO _fl RX0 CB RXOB R1 RX0-C RX0 R2 RX0-0B RX1B R3 RX0-0 RX1 R4 RX0-1B RX2B R5 RX0-1 RX0-2B RX2 R6 RX0[2 EXT RES I_-Z_-_Tp21 OPWR-0_5V 73 OPWR 5V AVDD33 HDMI 7R AVDD33 H AVDD12_-CVCC 74 AVDD12 CVCC MT5390 SMD LQFP AV33 L43 AVDD33 H 12° _Ls266 I T _[_C237 I 'uF _ __L4ZuF"°v I'°°n_'°4°2 AV12 .---- L_ 120[...]

N11F CVBS0 131 CVBS1 129 SY0 l?f! SC0 177 VIP ATV 135 VIN ATV 133 CVBS0 CVBS1 SY0 SC0 SY1 SC1 VIP ATV VIN-ATV VlNDC 134 VlNDC D2SA_I 13f! D2SA C292_C256 100nF/040Z00nF/0402 DVDD25 VADC DVSS25 VADC GND TUNER GD CVBS GNDSV AVDD25 VADC AVSS25 VADC AVDD25REF AVSS25REF AVDD25VFE AVSS25VFE MT5380 SMD LQFP Near chip 141 14? 13? 130 124 14,3 144 13,9 140 1[...]

I I [ I +3V3SB R251 _- ADIN1ADIN2 2K2/0402 t C277 -J-- l nF,o4o_.____TnF,o4o2; C278 r D39', i, 10PA m TO KEY BOARD D40 10P ) R253 f XP7 10R/0402 'gv" 3 _,,,_ R254 10R/0402 I TJCl0-4A I +3_ C62 +5_ I10uF/NC 10R/0402/NC +5VSB R255 10R/0402 PWR iR C279 I CE54 _--_ 00nF/0402 "t " 22uF/16v ._L OIRI R258 10R/0402 ,,1t IR XP8 PWR [...]