LCDTelevision Service Manual Chassis: Product MT5380 Type: (1) --ELCHW261 LHDN26W57US Ver 1.0 Hisense Electric Co., August, 2009 Ltd.
Contents Contents ....................................................................................................................................................................... -2- Service Manual -3- ........................................................................................................................................................... 1. Precautions and notices ...................................................................................................................
Service Manual 1. Precautions and notices BEFORE SERVICING THE LCD TV, READ THE SAFETY PRECAUTIONS IN THIS MANUAL• 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., Ltd Equipment. The service procedures recommended described in this Service Guide are effective methods of performing by Hisense and service operations.
techician trained in the proper Television Hereafter throughout safety and service methods and procedures this manual, Hisense Electric Co., Ltd will be referred to as Hisense. 1.1 Warning 1.1.1 Critical components having special safety characteristics Ref. No. in the parts list. Use of non-manufacturer's shock, fire, or other hazards.Under no circumstances modified or altered without written permission are identified with a a_ by the recommended should the original design be from Hisense.
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 manufacturer substitutions manufacturer's parts are required, be sure to use replacement or have the same characteristics parts specified by the as the original part. Unauthorized may result in fire, electric shock, or other hazards and will void the warranty. 1.1.
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 as water, metal, or liquid) gets inside the panel module, immediately turn off the power. Continuing to use the product may cause fire or electric shock.
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 these instructions. • Before starting the work, secure a sufficient working space.
sure to confirm that there is no foreign matter on top of the cushioning the surface of the panel comes into contact with the cushioning observe this precaution materials before materials. Failure to 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 heat sink or transformer. Failure to observe this precaution abnormality in the soldered areas.
2. Product Function Specifications 2.
Back Cabinet AC INPUT 2.
Appendix Model ELCHW261 Diagonal display Television system Audio size American multiplex Channem TV standard system VRF: 2_,13 UHF: 14_,59 CATV:lN125 Digital Terrestrial Broadcast (8VSB): 2_-_59 Digital cable (64/256 QAM): 1-,135 coverage 640 x 480/50Hz,800 YPbPr/YCbCr ATSC/NTSC BTSC system PC mode HDMI 26 Inches mode mode lO80Z/50Hz 4BOI/50Hz,480P/50HzJ20Pi50H% l O801/50Hz 1366 x 768 Power AC 120 V, 60 Hz Power consumption 75W Audio power 5W+5W RF input 1024 x 768/50Hz
3. LCD Panel Spec Panel: M260TWRl\ROH 3.1 General SN 1061384 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 row driver circuit. This TFT LCD has a 26-inch diagonally measured active display area with WXGA resolution (1366 vertical by 768 horizontal pixel array).
3.2 General Features Product Summary Screen Diagonal 26 Active Area 575J69 Pixels H x V 1,366. (x3) x 768 Pixel Pitch 0.4215 (per one triiad)x: Pixel Arrangement RG,B. Disp_a_ Mode NormaililyWhite_ (H) x 323.712: (V)" Medical Stripe mm ...... ii!!!i _I:!i!!ii:? White Luminance Contrast Response cd, m _ (CCFL@7mA) s00 _ Ratio ....
4. Chassis Layout and Overall Wiring Diagrams Boards and Chassis Layout No Description Part No. Type/Model PCB/Model (1) Main Board 121477 RSAG2.908.1553-2\ROH RSAG7.820.1730\VER.D\ROH (2) Power Board 122630 RSAG2.908.1498-2\ROH RSAG7.820.1646\VER.C\ROH (3) Keypad Board 113354 RSAG2.908.1088\ROH RSAG7.820.1101 (4) IR Board 116295 RSAG2.908.1260-2\ROH RSAG7.820.1337\VER.B\ROH -13- \VER.
5. Factory/Service 5.1 To enter OSD Menu and Adjustment 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 the selected function menu. Press "VOL+"/"VOL-" button adjust values in the menu. b. With user's RC 1. PowerTVOn 2. 3. Press Menu button and call up User OSD Menu Select Audio-> Balance 4. Enter 0->5->3 5.
5.2.2 Factory Option Item Default Options Notes M-Can enter factory 1 with factory M MODE RC or user RC. M, U U-Can enter factory only with user' Note: MODE "M" is only used for factory 5.2.3 Version 5.2.4 Default Options Note Version Software 2 Date The date of current Software info of the TV, readable version version only.
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 TV AV S-Video Component VGA HDMI R Gain 134 134 134 156 142 135 G Gain 125 125 125 145 120 122 B Gain 130 130 130 145 130 132 Warm: 5.3.
5.3.
6. Software Upgrading The software is upgraded main board of the unit. 6.1 Get ready 6.1.1 Install by a burning toll-MtkTool, file *.bin to the for upgrading the driver _L-2303 Double which can burn the program Briver click the icon , install the driver. PL-2303Driver Installer Setupis: preparing theInstallShield? Wizard°_,,,hieh ,,,_ill guideyouthroughtherest ofthesetup process. Pleasewait. ......... _';'n_'_i'"'""_ Select the default value, the driver will be installed 6.1.
For the first connecting, process the pc will recognize is just like the installation The -.vizard is installing _rzpi. software, and automatically of a mini disk, see the following Please install the USB device. picture. wait.... _y_ Last $1,_)(1_) N e xt Nt_o['l',I) Finish Finding New Hardware Ca.ncel_ _/_¢Szard+ _ The wizard has finished the sofN,'are mstallatlo " " n :_-' Prolific IfSB-to-Serial Comm Port If you close thev,Jzard, Please click rtmsn .
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 ........ A !_{_.__ The MtkTool whenever _: fl_shin£ !=_+_ [ i_!7!):_'_ i' [i in this folder altergether. ini using log is restored MtkTool. i_ ird Shortcut MtkTool, L2:?'_ to exe :h_tkTool. exe in the MtkLog folder• It records the running time and date the tool is used. The log will be a txt file named by the date and time.
5--Click the browse button to select the *.bin file that will be updated. 6--Click the "start" button to update software.
Open "Device is connected to the according Where on the chip type. reserve and find which TV; so, select to chip model. Note: otherwise, Manager" "COM4" For this unit( the selected in the MtkTool chip model or not click the "Auto If the flash port is connected chip does not support - 22 - main is MT538X), Set Flash mood. with the TV. In above Baud interface. select Rate" high speed Select picture, the right COM4 baud rate 115200.
Fort Baud Rate i Browse i _ Upgrade CheckSum >7 USB to UART Bridge Conl:rol!e[ Bumi"g AdS(eis! _ £hakeHand _[HEX] Cu=OmBU'oiOg End: ....... Click "Browse" button, find the upgrading !HE× ClearMSG program file, and select it. Press "Upgrade" and start upgrading. The following interface LoadBin file: _ Backup file: appears on the screen, indicating uild(hkense",PH_-, upgrading successfully. Check Sum Browse 5ackLip:bin Browse _ Backup P i .I ,::A_, SorlL W _ I:JL;L,J.
7. Troubleshooting 7.
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8. Explode 9.
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ELEMENT No. Part No. 1 ELCHW261 PARTS LIST Code Number 122619 Description front cover Qty. 1 2 1048975 lens led 1 RSAG8.640.065\ROH 3 116295 IR Board Unit 1 RSAG2.908.1260-2\ROH 4 1058744 bracket 2 RSAG8.038.1878\ROH 5 1061384 LCD Panel 1 M260TWR1\ROH 6 122630 Power Board unit 1 RSAG2.908.1498-2\ROH 7 1061396 1 RSAG4.114.126\ROH 8 1060591 1 RSAG8.081.577\ROH 9 1048779 bracket 1 RSAG6.150.452\ROH 10 1052031 back 1 RSAG8.074.
] I 2,3,4,5,6,7,8,9,10,I1,12,13,1@ND 01 :INDEX/POWER 2,7,8,9,13 IN 02:DIGITAL/ANALOG _MT5380_2LAYERS POWER 2,6,7,8,9,11,t2,13 2,3,5,14 03:MT5380PERIPHERAL 04:DDR1 2,9,11,14 << _>_> +12V << _>_> +12V / +5V << _>_> +5V +3V3SB << _>_> +3V3SB +5VSB << }>}> +5VSB MEMORY 05: FLAS H/JTAG/UART 9 BRI_OUT<< }} 06:ANALOG 9 BRI_EXT << }} PLL/USB2.
1,3,4,5,6,7,8,9,10,11,12,13,14 +5V VTT L DV33 t GI 3 IN _ OUT OUT 2 czi C8 < IR19 iCE 5 it9 I 4.
OSDA0 OSCL0 OSDA1 OSCL1 ?f16 ?f)7 63 6? OPWMt OPWM2 ?f14 ?f15 OXTALO OXTALI 146 AVCC SRV 149 AVDD33 XTAL147 ADIN3 _C 37 I i 15,t ADIN2 ADIN1 0 0nF/040 2.__ F/0402 C38 _ _.
N11A RDQS0 RDQM0 RDQ0 RDQI 11 13 9 ,5 RDQ2 RDQ3 RDQ4 RDQ5 RDQ6 7 6 ,5 4 3 RDQ7 RDQS1 RDQM1 RDQ8 RDQ9 ? 17 1,5 1,9 ?f) RDQI0 RDQ11 RDQ12 RDQ13 RDQ14 21 22 23 24 ?5 RDQI5 ?6 MEM VREF 53 RCS# 46 RDQS0 RDQM0 RA0 RA7 RDQ0 RDQ1 RWE RBAO RDQ2 RDQ3 RDQ4 RA6 RBA1 RA5 RDQ5 RDQ6 RRAS RA8 RDQ7 RDQS1 RDQM1 RDQ8 RA10 RA4 RCAS RA12 RDQ9 RDQ10 RDQ11 RDQ12 RDQ13 RCKE RA11 RA9 RA3 RA1 RDQ14 RDQ15 RA2 RCLK0 RCLKO RVREF0 47 36 40 43 37 44 3,5 42 35 4,5 39 41 32 31 33 34 fil 4,9 50 RA0 RA7 RWE# RBA0
1 1 I [ 1,2,3,4,6,7,8,9,10,11,12,13,14 1,2,3,14 2,3 N15 POCE0# POOE# PDD0 PDD1 ?fi? ?ill ?fi0 249 POCE0 POOE PDD0 PDD1 UORX UOTX 95 94 UORX UOTX 93 OIRI N14 POCE0# 1 R0/0402 OIRI 2 ' 3 4 GND 253 JTMS JTRST JTCI< JTDO JTDI 7 6 fi POCE0# M25P16/NS JTMS JTRST# JTCK JTDO JTDI 256 265 264 i. vo l Q HOLD W /VPP C VSS D . RZ8.
1 1 I [ N11D GND USB VRT 65 I USB DP AVDD33 USB AVDD12 USB 2 66 I USB-DM 67 I USB-DP 6,9 I AVDb33 USB AVDD12-USB USB #P DM ] AVDD12-TVDPLL AVDD12 FiDMPLL AVDD12 APLL AVDD12 SYSPLL 65 I USB TN0 VRT TP0 - _ AVDD12 PLL 157 155 16,3 161 AVDD12 AVDD12 AVDD12 AVDD12 R88 USB VRT PLL PLL PLL PLL C112 5K1/0402 1% AV12 -- 100pF/0402/NC AVDD12 AVDD12SKDPLL AVUU12-ADCPLL DMPLL I 162 156 155 AVDD12 PLL AV12 ,8 L9 MT5380 SMD LQFP 120R AV12 +5V AV33 AV25 +5V TUNER AfDU12 __C118 Cl USB 10121
AV33 N11G 179 176 177 176 175 174 17,3 177 171 1f!,3 1f!l lf!? lf!0 R103 AINOL AINOR AINI_L AIN1R AIN2_L AIN2R AIN3L AIN3 R AVDD33 AADC AVSS33 AADC VMID AT, DC REFP_AADC REFN AADC ASPDIF AOMCLK AOLRCK AOBCK AOSDATA0 ALl AR1 AL2 AR2 AVDD33 ADAC0 AVDD33 ADAC1 AVSS33_ADAC0 AVSS33 ADAC1 AD/_C VCM AVDD33_DIG AOMCLK _) AOLRCK AOBCK AOSDATA0 _) ALIO AR10 AL20 A R20 AVDD33 ADACO AVDD33 ADAC1 AVSS33 ADACO AVSS33 ADAC1 ADAC VCM AVDD33 DIG OUT 0E301 TP5 120R AVSS33 100uF/16_" TP6 _L0137 Z11uf 120R Av33
CE43 VD4 _-]_ 1_ 4148 1,2,3,4,5,6,7,9,10,11,12,13,14 - 22_ GND << >> +5V <( >_ +5V +12V (( _ +12V 14 ALI_AMP (<)> ALI AMP 14 ARI_AMP (()) AR1 AMP 9 MUTE << }} MUTE 3 OPCTRL3 << >> OPCTRL3 1,2,6,7,9,11,12,13 R145 I +5V +12V R146 1%10410402 0R0/0402/NC l 0R0/0402 R149 R148 220R/0402 1K/0402/NC L R150 1 VD7 LJ 12 1K/04021N41V/8 ] R156 ) _ VD9 R155 1N414856K/0402<__ 0R0/0402/NC/ ]c .J_ +5V +12V 1,2,7,9,13 lVD_4 __ GND ' 4K7/0402 R147 l .1.
AV33 1,2,3,4,5,6,7,8,10,11,12,13,14 AV33 NllC A0N A0P A1N AlP A2N A2P CK1N CK1P A3N A3P A4N A4P A5N A5P A6N A6P CK2N CK2P A7N A7P 244 243 242 241 239 236 ?37 236 236 234 233 232 230 229 226 227 ??6 ??5 ??4 ?P3 AVDD33 VPLL A0N AVDD33 LVDSA AVDD33-LVDSB A0P A1N AlP A2N A2P AVDD33]LVDSC AVDD33 VPLL CK1N CK1P A3N A3P A4N 227 231 240 AVDD33 AVDD33 AVDD33 219 AVDD33 VPLL TP2 TN2 LVDS LVDS LVDS 1 C181 120R L24 1 luF !:N']}:ELLJ-J+gVlII, P8 AVDD33 LVDS I C182 T4.
1,2,3,4,5,6,7,8,9,1t,12,13,14 2,6,12 AV12 N11E soYo YOP YON PBOP PBRON PROP SOY1 Y1P Y1N PBtP PBR1N PR1P 107 1Oh 1Q£ 114 115 116 11_ 11£ 170 171 177 123 SOY0 Y0P YON PBOP PBRON PROP SOY1 Y1P Y1N PB1P AVDD12 DVDD12 VGA AVSS12_RGBADC AVDD12 RGBADC AVSS__RGBFE AVDD12_RGBFE GP GN VSYNC HSYNC SOG TN1 TP1 TP20 TP19 113 110 105 1@ DVDD12 AVSS12 AVDD12 AVSS12 AVDD12 VGA 104 106 96 99 1Q? 103 96 97 1Q0 RGBADC 11 11 11 11 11 11 11 11 11 AV12 120R RGBADC RGBADC RGBFE RGBFE 0205 10206 DVDD12 VGA 12
1,2,3,4,5,6,7,8,9,10,12,13,14 1,2,6,7,8,9,12,13 GND <_<__>_> +5V <_<__>_> HSYNC +5V XS6 D-SUB15 UOTX o 1? o 13 o o ) o ) HSYNC# o ) VSYNC# UORX 6 1 7 ? 8 3 9 4 ) VGASDA IN VGASCL R205 NEARLY NEARLY VGA CON.
1 [ AV33 N11K RXOB RXO RXOB RX0 RX1B RX1 RX2B 79 _fl R1 R2 R3 R4 R5 RX2 R6 L43 AVDD33 12° RX0 CB RX0-C RX0-0B RX0-0 RX0-1B RX0-1 RX0-2B RX0[2 OPWR-0_5V 73 AVDD33 HDMI AVDD12_-CVCC 7R 74 OPWR T I_ 'uF 1 H _Ls266I 5V AVDD33 H AVDD12 CVCC T L61 _[_C237 __L4ZuF"°v I'°°n_'°4°2 AV12 1 120R .---- AV33 EXT RES I_-Z_-_Tp21 CE56 lo _y AV33_HDMI ? 306 1.2.3A.5.6J.
AV25 GND 1,2,3,4,5,6,7,8,9,10,11,12,14 2,6 N11F CVBS0 CVBS1 SY0 SC0 131 129 l?f! 177 CVBS0 CVBS1 SY0 SC0 SY1 SC1 Near chip 135 133 VlNDC 134 D2SA_I 13f! VIP ATV VIN-ATV VlNDC DVDD25 DVSS25 GND 141 14? 13? 130 124 DVDD25 VADC DVSS25 VADC GND TUNER GD CVBS GNDSV AVDD25 AVSS25 VIP ATV VIN ATV DVDD25 VADC VADC TUNER GND GND _._E._. FAT iN1+ CVBS SV AVDD25 AVSS25 L46 7 47pF/0402 I VADC VADC AVDD25REF AVSS25REF AVDD25VFE AVSS25VFE VADC VADC AVDD25 AVSS25 AVDD25 AVSS25 025" ._1.
I I [ I +3V3SB TO KEY BOARD 1,2,3,4,5,6,7,8,9,10,11,12,13 GND << _>_> GND R251 _- / +3V3SB 1,2,3,5 1,2,9,1t R253 10R/0402 ADIN1ADIN2 2K2/0402 t f C278 r D39',D40 i, 10PA 10R/0402 I ADIN2ADIN1 _ 5 OiRI << _>> OiRI 3 OPCTRLI << _>) OPCTRLI ADIN1 TJCl0-4A I 10P C62 +5_ ) +5VSB 3 _,,,_ lnF,o4o_.
