ViewSonic VS12068 Manuel de service

Service Manual ViewSonic VT2730-1MModel No. VS13154-1M27” LCD TV(VT2730-1M_SM Rev. 1a Mar. 2010)ViewSonic® 381 Brea Canyon Road, Walnut, California 9

6. Remote Control Unit (RCU) An IR remote control unit shall accompany this product along with battery. In addition, this remote control unit shal

ViewSonic Model Number: VS131541216NA2345310496P-01 CAP CHIP CS 0402/X7R/16V 0.1u K T DARFON11217NA2345310496P-02 CAP CHIP CS 0402/X7R/16V 0

ViewSonic Model Number: VS131541303NA2345310496P-04 CAP CHIP CS 0402/X7R/16V 0.1u K T MARUWA11304NA2345310496P-01 CAP CHIP CS 0402/X7R/16V 0

ViewSonic Model Number: VS131541390NA2364201296P DIODE,RECT(SMD)BAT54C-F SOT-23 DIODES11391NA2365911696P IC,DIGITAL SMD24LC02B/SN SOIC-8 MI

ViewSonic Model Number: VS131541477NA2403703496P TACT SWITCHH=1.5mm F=260g TOP11478NA2403703496P TACT SWITCHH=1.5mm F=260g TOP11479NA2403703496P T

ViewSonic Model Number: VS131541564NA2347410496P-04 CAP CHIP CS 0805/Y5V/50V 0.1u Z T MARUWA11565NA2364600496P-01 DIODE,SWITCH SMD MM4148 S

ViewSonic Model Number: VS131541651NA2360609196P FET N-CH(SMD)2N7002LT1G SOT-23 ON11652NA2360610796P FET N-CH(SMD)MTN7002ZHN3 SOT-23 CY

ViewSonic Model Number: VS131541738NA2284110291P CAP CERCC 1000P/1KV X7R P=5.0 K T 11739NA2284110291P CAP CERCC 1000P/1KV X7R P=5.0 K T 11740N

ViewSonic Model Number: VS131541821NA2357518108P-02 EC HI-RIPPLE 105C 400V(3000hr)EC 180u/400V 20*40 P=10.0 S (HER-MEI)11822NA2336015811P HI-LIFE

ViewSonic Model Number: VS131541908NA27121C15900 MANUAL INSERT-IRVT2730-M 11909NA2363706608P-03 LED BLU/ORG L=5.0mm BRIGHTEK 1L0392A1B12MM50311910N

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7. MechanicalThe following table defines the mechanical specifications of this product for both chassis and cabinet.Parameter SpecificationDimension

3. Front Panel Function Control Description)URQW9LHZRIWKH3URGXFWELItem Description1Power LED IndicatorLights up in blue when the TV is turned on.

Item Description1 Power (AC input)Plug-in the supplied AC Power cord and connect to the AC input power source.2USB&RQQHFWWR\RXU86%GHYLFHVVXF

Item Description12 S-Video inputConnect the S-Video cable from the compatible device to this connector on the rear panel of the LCD TV.13 TV Input Jac

Remote ControlENGLISHButtons located at the side of the LCD TV will operate the same as these buttons on the remote control.Button Description1 POWERP

ENGLISHButton Description7 GUIDEShow electronic program guide (EPG)8 - VOL +Press to adjust the volume.9 LISTSelect channel from program list10 EXITOS

OperationStoring Channels into Memory1. Press the MENU button to display the OSD main menu.3UHVVŻRUŹWRVHOHFWWKH³&+$11(/´PHQXWKHQ

Selecting the Input SourceTo select the TV or other external input sources connected to the TV.1. Press the INPUT button on the remote control.3UHV

Channel Name SettingTo edit a name for the current channel:1. Press the MENU button to display the OSD main menu.3UHVVŻRUŹWRVHOHFWWKH³&+

Copyright Copyright© 2010 by ViewSonic Corporation. All rights reserved. No part of this publication may be reproduced, transmitted, transcribed, st

Adjusting the Settings1.(1) Press the MENU button to display the OSD main menu.3UHVVŻRUŹWRVHOHFW\RXUGHVLUHGWRS0HQXWKHQ press ENT

Closed Caption Setting1. Press the MENU button to display the OSD main menu.3UHVVŻRUŹWRVHOHFWWKH³237,21´PHQXWKHQ press ENTERRUźWR

Using the Parent Controls1. Press the MENU button to display the OSD main menu.3UHVVŻRUŹWRVHOHFWWKH³/2&.´PHQX3. Press ENTERRUźWRHQ

US3UHVVŹWRVHW79RU03$$UDWLQJV(1) TV 3UHVVŸRUźWRVHOHFW³79´WKHQSUHVVŹWRHQWHU³79´UDWLQJV\VWHPVHWWLQJ3UHVVŸRUźWRV

Canada3UHVVŹWRVHW&DQDGLDQ(QJOLVKDQG)UHQFKratings.(1) Canadian English3UHVVŸRUźWRVHOHFW³&DQDGD(QJ´3UHVVŹWRHQWHU3

To Block Unrated Movie or TV Programs3UHVVŸRUźWRVHOHFW³8QUDWHG/RFN´WKHQSUHVVŻRUŹWRVHOHFW³2Q´RU³2II´:KHQ³2Q´LVVHOHFWHGall p

To block by Input Source3UHVVŸRUźWRVHOHFW³,QSXW%ORFN´3UHVVŸRUźWRVHOHFWWKHLQSXWVRXUFHWKHQŻRUŹWRVHOHFWIURP³%ORFN´RU³8Q%

Using PC Function1. When in PC source, press the MENU button to display the OSD main menu.3UHVVŻRUŹWRVHOHFWWKH³3,&785(´PHQXWKHQ

Using USB Function1. When input source is selected to USB, insert the USB device into the USB jack. USB only supports JPEG,%03DQG31*LPDJH¿

Annotations for OSD Menu ItemsSee below for meanings of the control items in each menu.Picture menuPicture Mode: To select picture mode.Contrast

TABLE OF CONTENTS 1. Precautions and Safety Notices... 33. Front Panel Function Control

Time menuSleep Timer: To set the off timer.Time Zone: To select the time zone appropriate to your location.DST: To turn on/off daylight sa

Lock menuChange Password: To Change the current Password.System Lock: To select On or Off to Lock parent control.Unrated Lock: To block un

4. Circuit Description z A/D converter This brick convert is the 110-220AC input voltage to 24V output for inverter use and 5V for panel , system and

5V-tolerant HSYNC / Composite Sync for VGA Input from channel 0 K6 VSYNC0 Schmitt Trigger Input VSYNC for VGA Input from channel 0 J6 HSYNC1 Schmitt

AUR2 Analog Input Audio Line Input Right Channel 2 L4 Pin Name Pin Type Function Pin AUL3 Analog Input Audio Line Input Left Channel 3 L5 AUR3 Analog

LVA1M Output LVDS A-Link Channel 1 Negative Data Output V17 LVA1P Output LVDS A-Link Channel 1 Positive Data Output Y16 LVA2M Output LVDS A-Link Chann

C6, D7, C7, B7, R15, R16, R17, T18 GPIO[105:90] I/O General Purpose Input/Output; 4mA driving strength D8, B8, D9, B9, E10, B14, B10, E11, C11, A11, A

I2S_OUT_MUTE/ UART1_RX Output Audio Output Mute Control / Universal Asynchronous Receiver 1 C10 Pin Name Pin Type Function Pin UART1_TX/ GPIO87 GPIO79

I118 DDR2 The EM68B16C is a high-speed CMOS Double-Data-Rate-Two (DDR2), synchronous dynamic random-access memory (SDRAM) containing 512 Mbits in a 16

5. Adjusting Procedure 5.1. ADJUSTMENT CONDITIONS AND PRECAUTIONS 1. Approximately 30 minutes should be allowed for warm up before proceeding. 2. Ad

1. Precautions and Safety Notices1. Appropriate Operation(1) Turn off the product before cleaning. (2) Use only a dry soft cloth when cleaning the L

figure 1 figure 2 figure 3 figure 4 figure 5 figure 63. Power Consumption Check ( VGA MODE )A.

8. YPbPr, S-VIDEO, AV, TV, DTV’S , HDMI, USBFUNCTION TEST A. Input YPbPr, S-VIDEO, AV , TV, DTV’S signal and check. B. Input USA air channel (TABLE 1)

TV Frequency Table: U.S.A Channel (TABLE 1) VIF 45.75 MHz, SIF 41.25 MHz (UnitΚMHz

U.S.A. CATV (TABLE 2) VIF 45.75 MHz, SIF 41.25 MHz (UnitΚMHz) Ch. Freq.range fp (picture)fs (sound) fosc Ch. Freq.range fp (picture)

DIGITAL CABLE TV Frequence Table (table 3) U.S.A Channel Frequency Assignments (Cable) unit:MHz.

TTV receiving test: TV SIGNAL TEST ITEM CENTRALISM TRANSMITTING SIGNAL CHECK CONTENTSET CONTENT CHANNEL ORDERFREQUENCY(MHz) PATTERN SOUND P/S(dB)CHEC

DTV CHECK METHOD A.CHANNEL14: Check whether there are some pause or the mosaic phenomenon in the picture. B.CHANNEL36: Check whether the color of th

pc 2 pc 3 5.4.3 Start the Isp 1. Open the “I.exe” 2.Press the “config” , if the the ISP board have been found ,you will see the picture as bellow.

3. Press the “Connect” ,If all the things are ok and ready, it will show the device type as the bellow picture. Than pres “ᒔࡳ”pc.54. Press “read” an

5. Press “Auto”, than press “Run”. It will start ISP . When the ISP is ok ,you will see the information as the bellow picture. pc.76. Pull away th

5.2. Handling and Placing Methods Correct Methods: Incorrect Methods:Only touch the metal frame of the LCD panel or the front cover of the monitor.

! VT2730-M LCD TV DDC Card PC !!!!!!RS-232 Cable VGA Cable Barcode Reader 5.5.2 Setup Procedure

5.5.3 DDC Key In Procedure 1. run DDC exe 2. Choose model number the ViewSonic Corporation Confidential - Do Not Copy VT2730-1M

3. Press “ENTER” key. 4. Press “F4” key and Input bar code ViewSonic Corporation Confidential - Do Not Copy VT2730-1M51

5. Press “ENTER” key, then the successful picture is as follows. “DDC DOWNLOED OK! 6. Exit program. ViewSonic Corporation Confidenti

5.6 HDMI DDC Key In ProcedureThere are three EDID files for the different HDMI connectors. So you must be download the different EDID into each HDM

3. Connect DDC Card and VT2730-M LCD TV with HDMI Cable. 4. Connect Power Cord to VT2730-M LCD TV.!!5.6.3 DDC Key In Procedure 1. Run DDC.exe 2. Choo

3. Press “ENTER” key. 4. Press “F4” key. ViewSonic Corporation Confidential - Do Not Copy VT2730-1M55

5. Input bar code 6. Press “ENTER” key, then the successful picture is as follows. “DDC DOWNLOED OK! 7. Exit program ViewSonic Corpor

Packing For Shipping And Disassembly Procedure Packing For Shipping 1. Packing Procedure 1.1 Paste protection film to protect the LCD TV. (Figure 1) 1

Item ViewSonic P/N Ref. P/N Description Q'ty1 NA VT2730M monitor 12 P-000089502013054065P POLYETHY BAG 13 P-000101522012118901P POLYFOAM(L) 14 P-

2. Specification LCD panel of this product shall be provided by “CMO” with a model number of M270H1-L01.The following table defines this panel specifi

Disassembly Procedure 1.Disassembly of Stand, Rear Cover and Shield Plate from LCD TV.1.1 Unscrew 4 screws to remove Stand and Dust cover. 1.2 Unscr

1.3 Unscrew 6 screws to remove Shield Plate. 2. Disassembly of Front Cover , Main Board, Power Board and Panel Unit. 2.1 Unscrew 2 screws to remove

2.2 Unscrew 4 screws to remove Main board and Shield Plate. 2.3 Unscrew 1 screws to remove Front cover and Panel. Main Board ViewSonic Corporation

6. Trouble Shooting Flow Chart STARTCHECK MAIN PCB5V OK?YCHECKPOWERPCBD807,I801,I801OKN3V3 OK?YCHECKI103,SUROUND CAPBEAD OK?ND807,I801,I801DTV-VDD33CH

6.1 NO DISPLAY YPower key CheckWork ok Keypad P701CheckI701NCheckX102NNYCheck CheckPC SOUCED-sub cable Check I119 NCheckNNYCheck CheckAV SO

7. Block DiagramMSD3003EG-LF-S7TPA3113D2(Audio Amp.)LCD ModuleAV/SV Audio(RCA L/R)PC/DVI Audio(mini jack)YPbPr Audio(RCA L/R)DDR2FlashMSB1501(Demod.)A

8. Schematic Diagrams 8.1. System PowerVout=VFB*(1+RA/RB)VFB=0.8VRB=0.7K~5Kohm1.3V Core PowerRARBVCC1.8V for DDR2 Power R1R2Vout=Vref*(1+R2/R1)+Iadj*R

8.2. Tuner & DemodS5H1411PIN43S5H1409NCNCPIN48PIN47PIN46GNDNCPIN42Close to Scaler & Ground ShieldingGNDGNDGNDTuner_CVBS Trace Width >= 15mi

8.3. MSD3003_21x21_BGAV+/V-Enter/MenuMenu lockBurn-inButton lockEnter/CH+CH+/CH-V+/MenuPower lockFactorysimilar timing Menu/CH-Combination keyShieding

8.4. DDR2Close to DDR2Close to DDR2Erton : EM68B16CWPA-25HElpida : EDE5116AJBG-8E-EDDR2 32Mx16bit (64Mbye)Close to MST ICClose to MST ICClose to DDR

2. Video Built-in A/D converter shall provide analog to digital converter for this product. Input Parameter SpecificationCVBS Characteristics: Vid

8.5. VGAR-G-B-Close to MST. ICTo 75 ohm GNDRGBDDC_SCL_DVGA5VVGA_RIN1+VGA5VVGA-SDAVGA_HSYNCVGA_HSYNC1VGA_BIN1+VGA_GIN1+UART-RXVGA-TXVGA-RXUART-TXVGA-TX

8.6. Video_InterfaceYPbPr InputYPbPr/DVI Audio InClose to connectorAV & SV InputKeep A_GND trace with Signal.Keep Spacing for L/R cahnnel.Keep tra

8.7. HDMI interfaceclose to chipTo MST ICFrom HDMI connectorFor CEC Leakage ProtectDDC EEPROMHDMI2 ConnectorHDMI1 ConnectorHot-Plug ControlDDC EEPROMH

8.8. Audio InterfacePC Audio inputLocation near phone jackRCA OUTPlacement Near SPDIFBluepin 2,3 NCpin 4,5 NCHeadphone outputGreenpin 2,4 NCpin 3,5 NC

8.9. Audio Amp. InterfaceAudio Pre-AmplifierGain32dBL , LH , H20dBL , H 26dB36dBH , LGAIN[1:0]SD LOW==>> SHUT DOWNSD HI ==>> AMP WORKSAC O

8.10. Panel/USB InterfaceLVDS PANELLVDS Panel ( Header Type )CMO M270H1-L01:R494 NCR493 0RUSB Host InterfaceR6_RXO0+R4_RXO1+G2_RXE0+G7_RXO3-G0_RXE1+

9. PCB Layout Diagrams 9.1. MAIN PCB TOP VIEW ViewSonic Corporation Confidential - Do Not Copy VT2730-1M75

9.2. MAIN PCB BOTTOM VIEW ViewSonic Corporation Confidential - Do Not Copy VT2730-1M76

9.3. KEYPAD PCB TOP VIEW 9.4. KEYPAD PCB BOTTOM VIEW ViewSonic Corporation Confidential - Do Not Copy VT2730-1M77

9.5. IR PCB TOP VIEW 9.6. IR PCB BOTTOM VIEW ViewSonic Corporation Confidential - Do Not Copy VT2730-1M78

4.ElectricalThe following table defines the electrical specification of this product. ELECTRICAL SPECIFICATION 1 Power Input Voltage Range 100-240VA

9.7. POWER PCB TOP VIEW ViewSonic Corporation Confidential - Do Not Copy VT2730-1M79

9.8. POWER PCB BOTTOM VIEW ViewSonic Corporation Confidential - Do Not Copy VT2730-1M80

10. Exploded View And Exploded Parts List ViewSonic Corporation Confidential - Do Not Copy VT2730-1M81

ViewSonic Corporation Confidential - Do Not Copy VT2730-1M82

Item ViewSonic P/N Ref. P/N Q'ty1 NA 2024291102P-01 FRONT BEZEL VT2730 ABS94HB G.L BLACK 12 NA 2044275801P FUNCTION KEY JC279E ABS94HB G.L BLACK

Rev: 1aSerial No. Prefix: RUBItem CategoryPart Name Description ECR/ECN ViewSonic P/NRef. P/NRef. NO CompatibilityLocation Universal number#1 Remote C

Item ViewSonic P/NRef. P/N Location Universal number#Q'ty1NA27001C15900 SET ASS'YVT2730-M 12NA27011C15900 PCB ASS'YVT2730-M 13NA27021C1

ViewSonic Model Number: VS1315485NA2345310496P-04 CAP CHIP CS 0402/X7R/16V 0.1u K T MARUWA186NA2345310496P-01 CAP CHIP CS 0402/X7R/16V 0.1u

ViewSonic Model Number: VS13154172NA2345310496P-01 CAP CHIP CS 0402/X7R/16V 0.1u K T DARFON1173NA2345310496P-02 CAP CHIP CS 0402/X7R/16V 0.1

ViewSonic Model Number: VS13154259NA2347710696P-04 CAP CHIP CS 0805/Y5V/10V 10u Z T MARUWA1260NA2340130096P CAP CHIP CS 0402/NPO/50V 30

Zoom Mode Movie Scale, Zoom In,4:3, Normal NR Middle, Strong, Off, Weak, Sound Mode Standard, Music, Movie, Sports, Personal Treble/Bass Bass, Treb

ViewSonic Model Number: VS13154346NA2345156196P CAP CHIP CS 0402/X7R/50V 560p K T 1347NA2340133196P CAP CHIP CS 0402/NPO/50V 330p J T 1348NA

ViewSonic Model Number: VS13154433NA2346310596P-04 CAP CHIP CS 0603/X7R/16V 1.0u K T MARUWA1434NA2346110296P CAP CHIP CS 0603/X7R/50V 100

ViewSonic Model Number: VS13154520NA2364302096P DIODE,SCHOTTKY(SMD)SK34B-TG-WS D0-214AA WILLAS1521NA2364303896P DIODE,SCHOTTKY(SMD)SM340B DO-21

ViewSonic Model Number: VS13154607NA2365112896P MEMORY IC (EEPROM)AT24C02BN-SH-T SOIC-8(8S1) ATMEL1608NA2365911696P IC,DIGITAL SMD24LC02B/SN S

ViewSonic Model Number: VS13154694NA2360300896P XISTOR NPN R SMD MMBT3904K SOT-23 FAIRCHILD1695NA2360301296P XISTOR NPN R SMD MMBT3904-F SOT23

ViewSonic Model Number: VS13154781NA2253100096P RES CHIP 1/16W RC 0402 1/16W 0 ohm J T 1782NA2251112106P RES CHIP 1/16W RC 0402 1/16W 121 ohm

ViewSonic Model Number: VS13154868NA2253110296P RES CHIP 1/16W RC 0402 1/16W 1K ohm J T1869NA2253110296P RES CHIP 1/16W RC 0402 1/16W 1K ohm

ViewSonic Model Number: VS13154955NA2253112396P RES CHIP 1/16W RC 0402 1/16W 12Kohm J T1956NA2253112396P RES CHIP 1/16W RC 0402 1/16W 12Kohm

ViewSonic Model Number: VS131541042NA2345310496P-04 CAP CHIP CS 0402/X7R/16V 0.1u K T MARUWA11043NA2345110296P CAP CHIP CS 0402/X7R/50V 1000

ViewSonic Model Number: VS131541129NA2345310496P-02 CAP CHIP CS 0402/X7R/16V 0.1u K T TDK11130NA2345310496P-03 CAP CHIP CS 0402/X7R/16V 0.1u