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Service Manual

ViewSonic VT2430-1M

Model No. VS12335-1M

24” LCD TV

(VT2430-1M_SM Rev. 1a Nov. 2008)

ViewSonic

381 Brea Canyon Road, Walnut, California 91789 USA - (800) 888-8583

Summary of Contents for VS12335-1M

Page 1: ...Service Manual ViewSonic VT2430 1M Model No VS12335 1M 24 LCD TV VT2430 1M_SM Rev 1a Nov 2008 ViewSonic 381 Brea Canyon Road Walnut California 91789 USA 800 888 8583...

Page 2: ...nd specifically disclaims any warranty of merchantability or fitness for any particular purpose Further ViewSonic reserves the right to revise this publication and to make changes from time to time in...

Page 3: ...rcuit Description 27 5 Adjustment Procedure 31 6 Trouble Shooting Flow Chart 58 7 Block Diagram 62 8 Schematic Diagrams 63 9 PCB Layout Diagrams 81 10 Exploded View And Exploded Parts List 88 11 Recom...

Page 4: ...mmediately Long contact with water may cause discoloration or spots 4 When the panel surface is soiled wipe it with absorbent cotton or other soft cloth 5 Since the panel is made of glass it may break...

Page 5: ...izer Surface of the LCD panel is pressed by fingers and that may cause Mura Take out the monitor with cushions Taking out the monitor by grasping the LCD panel That may cause Mura Place the monitor on...

Page 6: ...video cards see 7 1 General Test Equipment in the primary mode VGA 60 Hz and after user adjustment b No image drift or lose fine tune settings due to panel temperature change Panel Acceptance Spec Ref...

Page 7: ...Vertical 55 75 Hz 16 7 M DDC2B Compliant Rev 1 3 Refer to Appendix 3 Audio Audio amp of this product shall be provided by YAMAHA with a Model Number of YDA148 MST MSD2248AL for VT2430 1M shall be used...

Page 8: ...ssing 11 Power Supply Acoustics The Power Supply shall not produce audible noise that would be detectable by the user Excluding Power Supply Fan Audible shall be defined in accordance with ISO 7779 DI...

Page 9: ...dvanced Selection ATSC off Service 1 6 Option Font style Front size Front edge style Front edge color FG color BG color F G Opacity Option ATSC GG Opacity DCR On Off OPTION Restore Default Yes No TV S...

Page 10: ...ations at a rate of 20 30 cycle minute without load with battery Color Painting Color PANTONE 427C Black for front back cover Power Key PANTONE 032C RED Key Pads PANTONE 10C PANTONE 7C Cool Gray Texts...

Page 11: ...arts Bird Logo Recess Artwork shall be provided and confirmed by ViewSonic Rear Label A label identifying the product name model serial number and FCC ID Logo shall be placed into the rear label reces...

Page 12: ...de 3 Remote Control Receiver Receives IR signals from the remote control 4 Volume Down Decrease sound volume or adjust a highlighted control while in OSD menu 5 Volume Up Increase sound volume or adju...

Page 13: ...deo input Connect this jack to the composite video output connectors on your A V equipment 6 S Video input Connect the S Video cable from the compatible device to this connector on the rear panel of t...

Page 14: ...By connecting the headphones you can listen to the sound from the TV on headphones If you connect the headphones the TV speakers will be muted 11 TV Input Jack Connect this jack to your Cable or VHF U...

Page 15: ...able box Digital satellite receiver DVD Player Audio system Blu ray Disc Player PS3 Personal Computer Personal Computer Headphone DVD Player VCD Player Game system DVD Player VCD Player Game system DV...

Page 16: ...China area Buttons located at the bottom of the LCD TV will operate the same as these buttons on the remote control Button Description 1 INPUT Press to display the INPUT source list and select the sou...

Page 17: ...creen in a DTV source 6 LIST Press this button to show a small window showing program list you can scroll through the list to select the channel you want directly without using the button 7 0 9 number...

Page 18: ...o turn off the sound To restore the sound press this button again or press the VOL button 15 INFO Press this button to display the current state of the LCD TV 16 SLEEP Press repeatedly to set the off...

Page 19: ...to select the sub channel in DTV Ex Your desired number is 80 3 Press 8 press 0 press press 3 Return to the previous channel press RECALL button Adjusting the Volume Press VOL to adjust volume To turn...

Page 20: ...t any time 5 The Auto Scan screen will be shown and after it is done the screen will return to the first found channel Viewing the Menus 1 Press the MENU button to display the OSD main menu There are...

Page 21: ...the MENU button to display the OSD main menu 2 Press or to select the CHANNEL menu Press or to select Favorite then press button to enter Favorite setting 3 Press or to select the channel you d like...

Page 22: ...name press MENU or ENTER to complete the setting 7 Press MENU to exit Adding Erasing Channel When the channel is erased it will not appear on the screen when you browse the channels with CH button To...

Page 23: ...de Color Mode Zoom Mode Noise Reduction Sound Mode MTS Prefer Language in DTV mode Surround Sound Audio Only Sleep Timer Time Zone DST Time Format Auto Sync Clock Menu Language Transparency OSD Time O...

Page 24: ...nu 3 Press or to select Sleep Timer and press or to set the Sleep Timer from 5 240 min or Off 4 Press or to select Time Zone and select the correct time zone of your area with or The displayed time of...

Page 25: ...ct On to enable the detailed settings 6 Move to US or Canada rating system For detailed Close Caption setting 1 Press or to select Option then press to enter Option setting 2 Press or to select the Mo...

Page 26: ...l types content FV fantasy violence V violence S sexual situations L adult language D sexsual dialog 2 Press ENTER to set or reset each area 3 Press MENU to exit 2 MPAA 1 Press or to select MPAA 2 Pre...

Page 27: ...al guidance 14 viewers and older 18 adult programming EXEMPT exempt 4 Press MENU to exit 2 Canadian French 1 Press or to select Canada Fre 2 Press to enter 3 Press or to select your desired Canadian F...

Page 28: ...y shows an example of the content of RRT Setting However the selections and sub selections of RRT Setting may be different in your OSD menu according to the local broadcasting system To reset RRT sett...

Page 29: ...exit To Restore Factory Setting 1 Press the MENU button to display the OSD main menu 2 Press or to select the OPTION menu 3 Press ENTER or to enter OPTION menu 4 Press or to select Restore Default th...

Page 30: ...the same as or similar to when in other source When there is no signal in the PC mode No Signal will be displayed on the screen and the TV will automatically turn into power saving mode after a few s...

Page 31: ...le video decoder a Dolby Digital AC 3 MPEG layer I and II digital audio decoder with analog audio outputs that are designed to support ATSC HD SDTV programs while handling ATSC CC and EPG With additio...

Page 32: ...51 SIF1M Analog Input Reference Ground for SIF Audio Input Channel 1 52 I2S_OUT_MCK Output Audio Master Clock Output 109 I2S_OUT_BCK Output Audio Bit Clock Output 110 I2S_OUT_WS Output Word Select Ou...

Page 33: ...Negative Data Output 157 LVB1P Output LVDS B Link Channel 1 Positive Data Output 156 LVB2M Output LVDS B Link Channel 2 Negative Data Output 155 LVB2P Output LVDS B Link Channel 2 Positive Data Output...

Page 34: ...al Purpose Input Output 119 SAR0 Analog Input SAR Low Speed ADC Input 0 General Purpose Input Output 118 DRAM Interface Pin Name Pin Type Function Pin DQM 3 0 Output Data Mask for Low Byte active high...

Page 35: ...k cycle at the I O pins A single read or write access for the 256 Mbit Double Data Rate SGRAM effectively consists of a single 2n bit wide one clock cycle data transfer at the internal DRAM core and t...

Page 36: ...ng on use conditions YDA148 features Power Limit Function Non clip Function and DRC Dynamic Range Control Function that were developed by Yamaha original digital amplifier technology YDA148 has overcu...

Page 37: ...e and white balance adjustments C Video reference the front detail specifications 1 Eeprom Initial Press MENU and and POWER key go to factory mode 2 Adjust color temperature A Enter to the factory mod...

Page 38: ...uto adjusting VGA MODE Depend on the TIMING of TIMING TABLE TABLE 4 to switch MODE in order stay about 10 seconds each MODE it can changed and stored automatically each MODE We can t switch over to th...

Page 39: ...n of AUDIO IN is right Under TV MODE checks whether the action of AUDIO IN is right E In DTV mode the input signal ATSC confirmed AUDIO LANGUAGE and the normal movements PARENT 10 Under PC MODE input...

Page 40: ...589 75 595 75 601 75 607 75 613 75 619 75 625 75 631 75 637 75 643 75 101 00 107 00 113 00 123 00 129 00 221 00 227 00 233 00 239 00 245 00 251 00 257 00 517 00 523 00 529 00 535 00 541 00 547 00 553...

Page 41: ...00 263 00 269 00 275 00 281 00 287 00 293 00 299 00 305 00 311 00 317 00 323 00 329 00 335 00 341 00 347 00 353 00 359 00 365 00 371 00 377 00 383 00 389 00 395 00 JJ KK LL MM NN OO PP QQ RR SS TT UU...

Page 42: ...57 423 98 111 17 141 58 429 99 117 18 147 59 435 100 651 19 153 60 441 101 657 20 159 61 447 102 663 21 165 62 453 103 669 22 171 63 459 104 675 23 219 64 465 105 681 24 225 65 471 106 687 25 231 66 4...

Page 43: ...close caption Input signal level 45dBu G CHANNEL 69 Adjustment attenuator If the critical point of the change of the image signal to noise ratio is under LEVEL 60dBu regards as normally PRODUCTS OUTP...

Page 44: ...dBu regards as normally TIMING TABLE FACTORY PRESET MODE table 4 No Resolution V freq D SUB DVI TO HDMI HDMI 1 1920x1080 60 YES NO NO 2 1680x1050 59 8 YES NO NO 60 YES NO NO 3 1440x900 59 8 YES NO NO...

Page 45: ...n 5 4 1 Equipment Needed VT24301M LCD TV Fixture for Firmware Upgrade VGA Cable PC Personal Computer Firmware Upgrade Program One additional LCD TV for checking the program execution 5 4 2 Connection...

Page 46: ...f the the ISP board have been found you will see the picture as bellow pc 4 3 Press the Connect If all the things are ok and ready it will show the device type as the bellow picture Than pres pc 5 Vie...

Page 47: ...ISP When the ISP is ok you will see the information as the bellow picture pc 7 6 Pull away the AC power Cord and the D SUB Cable And start another TV set When we start another TV set with AC ON we on...

Page 48: ...onform to the LCD TV you have to do the DDC key in 5 5 1 Equipment Needed VT2430 1M LCD TV DDC Card PC RS 232 cable Barcode Reader VGA Cable VT2430 1M LCD TV DDC Card PC RS 232 Cable VGA Cable Barcode...

Page 49: ...CD TV with VGA Cable when key in DVI DDC information use VGA transform to DVI port 4 Connect Power Cord to VT2430 1M LCD TV 5 Press MENU and ENTER at the same time then go into the BURN IN MODE 5 5 3...

Page 50: ...2 Choose model number the 3 Press ENTER key ViewSonic Corporation 47 VT2430 1M Confidential Do Not Copy...

Page 51: ...4 Press F4 key and Input bar code ViewSonic Corporation 48 VT2430 1M Confidential Do Not Copy...

Page 52: ...5 Press ENTER key then the successful picture is as follows DDC DOWNLOED OK 6 Exit program ViewSonic Corporation 49 VT2430 1M Confidential Do Not Copy...

Page 53: ...I connector 5 6 1 Equipment Needed VT2430 1M LCD TV PC RS 232 cable Barcode Reader HDMI Cable VT2430 1M LCD TV PC RS 232 Cable HDMI Cable Barcode Reader 5 6 2 Setup Procedure 1 Connect HDMI Card and D...

Page 54: ...C Card and VT2430 1M LCD TV with HDMI Cable 4 Connect Power Cord to VT2430 1M LCD TV 5 6 3 DDC Key In Procedure 1 Run DDC exe 2 Choose model number then ViewSonic Corporation 51 VT2430 1M Confidential...

Page 55: ...3 Press ENTER key 4 Press F4 key ViewSonic Corporation 52 VT2430 1M Confidential Do Not Copy...

Page 56: ...5 Input bar code 6 Press ENTER key then the successful picture is as follows DDC DOWNLOED OK 7 Exit program ViewSonic Corporation 53 VT2430 1M Confidential Do Not Copy...

Page 57: ...bag and seal the bag Figure 2 1 3 Put the cushions on the LCD TV Figure 3 1 4 Place the LCD TV into the carton and put all the accessories into the carton At last close the carton and seal it with ta...

Page 58: ...222536P POLYETHY BAG 1 6 NA 2001132017P CD OWNER GUIDE 1 7 NA 2002310787P GUARANT CARD 1 8 A 00005362 2427130046P AC POWER CORD 1 9 P 00009322 2011124001P CARTON BOX 1 10 NA 2055632329P LABEL 1 11 NA...

Page 59: ...ssembly of Stand from LCD TV 1 1 Unscrew 4 screws to move Stand Unit and Dust Cover 2 Disassembly of Rear Cover 2 1 Unscrew 10 screws in the Rear Cover Stand Dust Cover ViewSonic Corporation 56 VT2430...

Page 60: ...2 Prize the rectangle hole on Rear Cover Fig 1 with a screwdriver Fig 2 to make the Rear Cover detach from the LCD TV Rear Cover Fig 1 Fig 2 ViewSonic Corporation 57 VT2430 1M Confidential Do Not Cop...

Page 61: ...ain Board Power Board Front Cover and Panel Unit 3 1 Unscrew 2 screws to remove Bracket fix 3 2 Unscrew 9 screws to move Speaker and KeyPad Board Bracket fix ViewSonic Corporation 58 VT2430 1M Confide...

Page 62: ...crew screws 5 to move Shield Plate 3 4 Unscrew 4 screws and disconnect the wires to remove Main Board Speaker KeyPad Board Shield Plate Front Cover ViewSonic Corporation 59 VT2430 1M Confidential Do N...

Page 63: ...ew 4 screws and disconnect the wires to remove Main Board 3 6 Unscrew 4 screws and disconnect the wires to remove Power Board Main Board Power Board ViewSonic Corporation 60 VT2430 1M Confidential Do...

Page 64: ...3 7 Unscrew screws 4 to move Panel Bracket Panel Bracket ViewSonic Corporation 61 VT2430 1M Confidential Do Not Copy...

Page 65: ...I204 SUROUND CAP BEAD OK N Y CHECK I206 Y CHECK I202 SUROUND CAP OK D807 I801 I801 VCC1V2 STOK CHECK I105 SUROUND CAP BEAD OK N Y CHECK I206 SUROUND CAP OK Y Y CHECK P101 OK D807 I801 I801 PANEL 5V OK...

Page 66: ...UCE S Video cable Check N Check N N R561 R565 L505 L506 C521 C527 I107 SUROUND Y Check Check YPbPr cable Check N Check N N R567 R570 R573 YPbPr SOUCE Check TV SOUCE Check RF CABLE Check N Check N N L5...

Page 67: ...CAx2 PC Audio mini jack YPbPr Audio RCAx2 Flash PC D Sub HDMI ATSC Speaker 6Wx2 MSD809 DEMO COMBO TUNER MSD2248AL YAMAYA 148 S_VIDEO DDRx2 EAR PHONE OUT TPA6113A2 7 Block Diagram ViewSonic Corporation...

Page 68: ...8 FB EN OCSET VCC OUTPUT OUTPUT VSS VSS R108 0R C102 NC E B C SOT 23 Q101 NC 3904 1 3 2 R141 NC C161 100nF R111 0R E B C SOT 23 Q121 NC MMBT3904 1 3 2 E B C SOT 23 Q120 MMBT3904 1 3 2 R133 4 7K C103...

Page 69: ...ATA4 VDD12IH VSSIPH PKDATA3 PKDATA2 PKDATA1 PKDATA0 VDD33OPH VSSOH RESET_N TEST_BIRA TEST_SIG0 TEST_SIG1 VDD12IH VSSIPH TEST_SIG2 TEST_SIG3 PKCLK VDD33OPH VDD12T_ABB VSSIPH VBB_ABB D_IN4 VSST_ABB D_IN...

Page 70: ...nF L112 10uH C512 NC 680pF R510 47R R503 100K R127 11K5 1 0603 Q502 MMBT3904 1 3 2 R586 NC 2K2 R588 0R C504 1nF C514 100nF I501 DTVS205EH201A 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 2...

Page 71: ...ock 11 Audio_Block AU_DACO_0L AU_DACO_0R 5VAMP PC_Audio AUL2 PC_Audio AUR2 VCC5V ST MUTE_S GPIO124 POWER ON OFF GPIO44 SHUT_DOWN_AU 12V DTV VDD33 VCC3 3V ST POWER SAVING GPIO98 AU_DACO_1R AU_DACO_1L M...

Page 72: ...5 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 32 34 35 40 41 42 43 44 45 46 48 50 51 52 53 55 56 57 58 59 60 61 62 64 65 70 66 68 69 73 78 134 118 119 120 121 122 123 124 125 128 129 130 131 132 133...

Page 73: ...364 NC 0R C346 100nF L215 Z 120ohm 0603 3A L0603 R215 1K 1 R205 27R R351 33R C210 100nF 8 7 6 5 1 2 3 4 RP28 RP22X4 C211 100nF 8 7 6 5 1 2 3 4 RP26 RP22X4 R207 22R R350 33R L216 Z 120ohm 0603 3A L0603...

Page 74: ...5 11 12 13 14 15 10 16 17 R559 NC 100R D508 4 7P C517 47nF R544 75R R541 47R D510 4 7P R590 0R D509 4 7P R539 47R D512 4 7P R558 NC R552 4 7K R589 0R R560 10K R546 510R R543 75R C520 100nF R553 100R...

Page 75: ...MINI DIN4 MINIDIN8 6 2 8 1 3 7 5 4 9 R566 470R R585 12K D520 4 7P R563 47R R574 75R D521 4 7P R567 47R C533 NC 10pF R575 47R C538 47nF C536 NC 10pF C526 100p D524 4 7P D523 4 7P C524 100p R578 10K R57...

Page 76: ...Dat1 shield DDC SCL DDC SDA DAT1 DAT1 Dat2 shield 5V CEC DDC GND HPD DAT0 DAT0 Dat0 shield clk shield clk clk CEC SHIELD SHIELD SHIELD SHIELD VCLK R534 100R R521 6R8 R531 10K R536 100R D501 NC 4 7P D5...

Page 77: ...DACO_1R 5VAMP PC_Audio AUL2 PC_Audio AUR2 AU_DACO_0L AU_DACO_0R MUTE_S GPIO124 POWER ON OFF GPIO44 PHONE_R PHONE_L PHONE_R PHONE_L PHONE_DET PHONE_DET SHUT_DOWN_AU 5VAMP VCC5V ST 12V VCC3 3V ST POWER...

Page 78: ...731 12K P602 PHONE JACK NORMAL CLOSE 1 9 8 7 6 2 3 4 5 10 11 12 13 14 R650 10K C643 1uF 0603 C645 560pF R729 10K C653 1uF 0603 R736 100R R732 1K C651 47u 16V E B C SOT 23 NC MMBT3904 Q606 1 3 2 R734 1...

Page 79: ...CKIN NCDRC0 NCDRC1 GAIN0 GAIN1 PVDDML OUTML1 OUTML2 PVSSL OUTPL1 OUTPL2 PVDDPL OUTPR2 C616 100nF R627 47K R743 0R C671 NC 100P R640 22K R638 10K C629 100nF 0603 R615 NC 7K5 C622 1nF C612 NC 1uF 0805...

Page 80: ...2 RXO2 RXO3 RXO3 RXE1 RXE1 RXEC RXOC RXE2 RXE0 RXE3 RXEC RXOC RXE2 RXE3 RXO1 RXO2 RXO1 PANEL VCC R695 NC 0 C321 100nF P106 PIN 15x2 2 0mm 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 1 3 5 7 9 11 13 15 17...

Page 81: ...SHELL SHELL I504 NC AZ1045 04S 1 2 3 4 5 6 I 01 VDD I 02 I 03 GND I 04 R314 NC 51K R362 NC 5 1R R363 NC 5 1R t F501 NC 5V 0 75A 1 2 L209 NC 80R 0805 6A C318 NC 1nF C317 NC 47u 16V USB_DM 6 USB_DP 6 U...

Page 82: ...20K T902 10 1 2 3 7 4 5 6 C902 5P 3KV SL D914 BAV99 SOT R907 150K C961 NC R949 10k R977 270 R906 10 R974 3K Q907 2N7002 SOT23 R911 51K C905 1000P R976 220K C943 1u C912 470u 35V I901 OZ9938 1 2 3 4 1...

Page 83: ...856 NC L807 BEAD R854 470 R815 option R804 Jumper T2 5AH 250V F801 R858 2R2 R821 NC C831 2200pF R806 Jumper R837 220R 2WS R802 JP R811 0 47R 2WS R864 NC R839 1M R823 390 R865 1K R828 82K 1 Q801 APO9N7...

Page 84: ...9 PCB Layout Diagrams 9 1 MAIN PCB TOP VIEW ViewSonic Corporation 81 VT2430 1M Confidential Do Not Copy...

Page 85: ...9 2 MAIN PCB BOTTOM VIEW ViewSonic Corporation 82 VT2430 1M Confidential Do Not Copy...

Page 86: ...9 3 CON PCB TOP VIEW ViewSonic Corporation VT2430 1M Confidential Do Not Copy 83...

Page 87: ...9 4 CON PCB BOTTOM VIEW ViewSonic Corporation VT2430 1M Confidential Do Not Copy 84...

Page 88: ...9 5 POWER PCB TOP VIEW ViewSonic Corporation 85 VT2430 1M Confidential Do Not Copy...

Page 89: ...9 6 POWER PCB BOTTOM VIEW ViewSonic Corporation 86 VT2430 1M Confidential Do Not Copy...

Page 90: ...10 Exploded View And Exploded Parts List ViewSonic Corporation 87 VT2430 1M Confidential Do Not Copy...

Page 91: ...ViewSonic Corporation 88 VT2430 1M Confidential Do Not Copy...

Page 92: ...SPE ISZZTER001A M3 6L MSWR17 FZMYI 6 20 M SCW 0824 0811 2080003700P SCREW SPE ISZZTER001A M3 6L MSWR17 FZMYI 4 21 NA 2071684000P SHIELD PLATE N2430P SPTE T 0 3MM USA 1 22 M SCW 0824 0811 2080003700P...

Page 93: ...uick Start Guide CD Rom Label OWNER GUIDE ASSY N2430P 1M WIZARD VS12335 1M CMO DC 00009276 2604208133 14 Electronic Components CRT EEPROM Fly Back Transformer Microprocessor LCD TV Panel LCD PANEL M23...

Page 94: ...N2430P SPTE T 0 3MM USA 1 27 M SCW 0824 0811 2080003700P SCREW SPE ISZZTER001A M3 6L MSWR17 FZMYI 2 28 M SCW 0824 0285 2084730082P SCREW BND T M3X8 BND T 2 29 M SCW 0824 6945 2080004000P SCREW SPE ST...

Page 95: ...Flow Chart 7 Block Diagram 8 Schematic Diagrams 9 PCB Layout Diagrams 10 Exploded View And Exploded Parts List 11 Recommended Spare Parts List B Are you satisfied with this Service Manual Item Excell...

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