ViewSonic VA1912w-3 User Manual Download

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ViewSonic VA1912w-3

VA1912wb-3

Model No. VS10866

19” Color TFT LCD

Display

(VA1912w-3_VA1912wb-3_SM Rev. 1a Aug. 2006)

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

Service Manual

Summary of Contents for VA1912w-3

Page 1: ...ViewSonic VA1912w 3 VA1912wb 3 Model No VS10866 19 Color TFT LCD Display VA1912w 3_VA1912wb 3_SM Rev 1a Aug 2006 ViewSonic 381 Brea Canyon Road Walnut California 91789 USA 800 888 8583 Service Manual...

Page 2: ...ther expressed or implied with respect to the contents hereof and specifically disclaims any warranty of merchantability or fitness for any particular purpose Further ViewSonic reserves the right to r...

Page 3: ...ety Notices 1 2 Specification 3 3 Front Panel Function Control Description 10 4 Circuit Description 16 5 Adjustment Procedure 17 6 Troubleshooting Flow Chart 37 7 Recommended Spare Parts List 45 8 Exp...

Page 4: ...r 3 Wipe off water drops immediately 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...

Page 5: ...ront cover of the monitor Do not touch the surface of the polarizer Surface of the panel is pressed by fingers this may cause MURA Take out the monitor with cushion Take out the monitor by grasping th...

Page 6: ...6 Yes Power Voltage AC 100 240V 50 60Hz Yes On Mode Max Typ 36W max 32W typ Power Consumption Active Off Mode Max 2W Audio Amplifier Speaker 1 5 W 2 5W x 2 Tilt 20 to 5 Yes Swivel No Pivot No Ergonomi...

Page 7: ...ompliant DDC 2B Video Signals 1 Video RGB Analog 2 DVI Digital Separate Video Impedance 75 Ohms Analog Maximum PC Video Signal 950 mV with no damage to monitor Maximum Mac Video Signal 1250 mV with no...

Page 8: ...y Shall be able to withstand 2KV L L and 2 3KV L PE with no damage Power Supply Missing Cycle Immunity Shall be able to function properly without reset or visible screen artifacts when cycle of AC pow...

Page 9: ...75Hz 37 5kHz Yes Yes 8 640 x 480 85Hz 43 27kHz Yes Yes 9 720 x 400 70Hz 31 5kHz Yes Yes 10 800 x 600 56Hz 35 1kHz Yes Yes 11 800 x 600 60Hz 37 9kHz Yes Yes 12 800 x 600 75Hz 46 9kHz Yes Yes 13 800 x...

Page 10: ...NDICATORS Front Panel Hardware Controls Power Switch Front Head Power Control soft Power Switch Power LED Front Head Green ON Orange Active Off Dark Soft Power Switch OFF Front Panel Controls Head X 1...

Page 11: ...lock will be activated by pressing the front panel control buttons 1 for 10 seconds If the user then tries to access the OSD by pressing any of the buttons 1 2 a message will appear on the screen for...

Page 12: ...ion should be disabled when push button 2 under Resolution Notice OSD 0 Touch Function Actions 1 Execute Auto Image Adjust when new mode detected and save the settings to buffer for further use 2 It s...

Page 13: ...s on page 10 Main Menu with OSD controls Front Control Panel shown below in detail Scrolls through menu options and adjusts the displayed control Also a shortcut to display the Contrast adjustment con...

Page 14: ...up S or down T buttons 5 To save the adjustments and exit the menu press button 1 twice The following tips may help you optimize your display Adjust the computer s graphics card so that it outputs a 1...

Page 15: ...VA1912wb Audio Adjust Volume increases the volume decreases the volume and mutes the audio Mute temporarily silences audio output Color Adjust provides several color adjustment modes including preset...

Page 16: ...B 1 To select color R G or B press button 2 2 To adjust selected color pressSandT Important If you select RECALL from the Main Menu when the product is set to a Preset Timing Mode colors return to the...

Page 17: ...rtical Position moves the screen image left or right and up or down Fine Tune sharpens the focus by aligning text and or graphics with pixel boundaries NOTE Try Auto Image Adjust first Sharpness adjus...

Page 18: ...appears OSD Position allows the user to move the OSD menus and control screens OSD Timeout sets the length of time the OSD screen is displayed For example with a 30 second setting if a control is not...

Page 19: ...ol capability for green mode requirements and spread spectrum support for EMI management The TSUM57AK incorporates the world s first coherent oversampled RGB graphics ADC in a monitor controller syste...

Page 20: ...ds during which time you will notice the image change 3 Firmware Test Patten Burn in Model Refer to Chap3 Hot Keys for Function Control Make sure the F W is the latest version 4 DCC Test Patten EDID p...

Page 21: ...nspection Item Bright Dot Partial Line Defect 14 Gray_Scale_0 100_V64 Test Signal 1280 1024 60Hz Test Pattern Vertical 64 256 Gray Scale Right Left From 0 to 100 White Inspection Item Line Defect Func...

Page 22: ...19 ViewSonic Corporation Confidential Do Not Copy VA1912w 3_VA1912wb 3 Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8...

Page 23: ...e Mstar ISP Tool User Manual Setp1 Take the cable of Print Port to connect Print Port of PC and Print Port of fixture and EDID burn in the same fixture to connect VGA Cable between D sub of fixture an...

Page 24: ...ess connect into ISP mode display the model of Flash The dialog of figure is displayed Device Type is Pm25LV512 then press Step 4 Press Read then enter as below figure then press to down load the prog...

Page 25: ...s Auto into below figure that display the value of BIOS Checksum below figure is displayed 0x1626 then press Run to execute the BIOS procedure The BIOS procedure is displayed the message Verify OK tha...

Page 26: ...23 ViewSonic Corporation Confidential Do Not Copy VA1912w 3_VA1912wb 3 Step 7 When select ReConnect and press Run then repeat to connect the mode of ISP into next the action of BIOS procedure...

Page 27: ...ure 1 1 Paste protection film to protect the monitor Figure 1 1 2 Put the monitor in the PE bag and seal the bag with tape Figure 2 1 3 Put the cushions on the monitor Figure 3 1 4 Place the monitor i...

Page 28: ...e Stand Assy 1 1 Remove Stand Cover Step 2 Remove the Stand Cover Step 5 Completed Step 3 Loose and remove 4 screws Step 1 Remove the Seat Assy Step4 Remove the Stand Assy 25 ViewSonic Corporation Con...

Page 29: ...hooks to take Bezel and Rear Cover apart Step 1 Loose and remove 2 screws Step 2 Separate Bezel hooks to take Bezel and Rear Cover apart Step 3 Remove Rear Cover Step 4 Completed 26 ViewSonic Corpora...

Page 30: ...p 1 Remove FFC from OSD Board Step 2 Loose and remove 4 screws Step 4 Remove 2 pieces of Backlight wires Step 3 Lift up LCD module and remove bezel Step 5 Remove 2 pieces of Backlight wires 27 ViewSon...

Page 31: ...Step 6 Loose and remove 2 screws Step 7 Loose and remove 2 screws Step 8 Loose and remove 4 screws Step 9 Remove the PCBA Cover 28 ViewSonic Corporation Confidential Do Not Copy VA1912w 3_VA1912wb 3...

Page 32: ...d AD Board Step 1 Loose and remove 4 screws Step 2 Remove Lips Board Step 3 Remove 2 pieces of FFCs Step 4 Remove the FFC Step 5 Loose and remove 4 screws 29 ViewSonic Corporation Confidential Do Not...

Page 33: ...Step 1 Place new AD Board And fasten 4 fixed screws Step 3 Insert FFC Step7 Completed Step 4 Insert 2 pieces of FFCs Step 6 Remove AD PCBA Step 2 Fasten 4 fixed screws 30 ViewSonic Corporation Confide...

Page 34: ...Step 5 Insert new Lips Board Step 6 Fasten 4 fixed screws Step 7 Completed 31 ViewSonic Corporation Confidential Do Not Copy VA1912w 3_VA1912wb 3...

Page 35: ...5 Remove OSD Board Step 1 Separate both Audio Cable Step 2 Take OSD Board apart Step 3 Completed 32 ViewSonic Corporation Confidential Do Not Copy VA1912w 3_VA1912wb 3...

Page 36: ...PCB Heatsink Step 1 Place New OSD Board Step 2 Insert Audio cable to connectors of New OSD Board Step 1 Join the PCB Cover Step 2 Fasten 4 fixed screws Step 3 Completed 33 ViewSonic Corporation Confi...

Page 37: ...ws Step 4 Fasten 2 fixed screws Step 5 Insert 2 pieces of Backlight wires Step 6 Insert 2 pieces of Backlight wires Step 7 Join LCD module and remove bezel 34 ViewSonic Corporation Confidential Do Not...

Page 38: ...mbly Step 10 Completed Step 1 Place Rear Cover Step 2 Fasten 2 fixed screws Step 3 Place the Stand Assy Fasten 4 fixed screws Step 9 Insert FFC 35 ViewSonic Corporation Confidential Do Not Copy VA1912...

Page 39: ...Step 5 Join the Stand Cover Step 6 Join the Seat Assy Step 7 Completed Step 4 Fasten 4 fixed screws 36 ViewSonic Corporation Confidential Do Not Copy VA1912w 3_VA1912wb 3...

Page 40: ...k Dot Backlight Light Leakage Mura Image Sticking Brightness spot Particle Dot Defect Check Panel Light On Test Next Step Panel Change Should be Performed to Level 3 Repair Abnormal Display TEST NG A...

Page 41: ...ange Power B Change Check Panel Display Noise Beat Display Shut Down Beat Display Flicker No Backlight Display Wave B Panel Change Adapter Change Check Adapter Panel Change Should be Performed to Leve...

Page 42: ...cklight Check PCBA AD B Change Inverter B Change Power B Change Check Panel Check PCBA Panel Change Power B Change Inverter B Change CNT B Change AD B Change Check PCBA VGA cable DVI cable Check Wire...

Page 43: ...ak Line Next Step TEST NG AD B Change Panel Change Horizontal Band Defect C Vertical Band Defect Power Saving Display Abnormal Check PCBA AD B Change Inverter B Change Power B Change Check PCBA AD B C...

Page 44: ...Change OSD B Change AC Power Change DC Power CNT Cable Change Adapter Change Check Adapter Check PCBA Check Wire OSD Cable Inverter B Power B Change OSD B Change DC Power CNT Cable Change Adapter Chan...

Page 45: ...SD B Change D sub cable VGA cable DVI cable BIOS Update Abnormal Loudspeaker Check PCBA Check Wire AD B Change CNT B Change No Voice Voice Loss Abnormal Loud L R Abnormal L R Same Volume Check Loudspe...

Page 46: ...CNT B Change Other Abnormal Display Next Step TEST NG Complete TV Function Display Abnormal Panel Change Should be Performed to Level 3 Repair Panel Change Check PCBA Check Wire TV B Change AV Cable C...

Page 47: ...de z Fuzzy Image Adjust Phase z Image too bright Adjust brightness and contrast by OSD z Image too dark Adjust brightness and contrast by OSD z Irregular image Check the signal connection between the...

Page 48: ...de Label 75x40 A190E2 H03 VSC Non Green DC 00008010 7741513161 1 15 Carton Label for A190E2 H06 20 mmx20 mm Chang Huang VSC_VA912_for Europe Green I DC 00008011 77 D011736 1 16 MENU for A190A2 H05 Com...

Page 49: ...1912w wb 3 Green II DC 00008019 76 D011751 1 17 SCREW M3 P 0 5 mm L 4 mm Pan Head Phillips Cross Recess Green I HW 00000553 42A9930008 2000 18 Screw M3 P1 27 12 5 5 2 Steel Green I HW 00000556 42A9990...

Page 50: ...3 COC 01 L 1830 50mm Black Linetek 18AWG No Bag Green I 1 27 HW 00000590 42A9930013 SCREW M4 P 0 7 mm L 15 mm Pan Head Green I 4 28 HW 00000555 42A9930014 Screw M3 P0 5 6 Green I 4 29 HW 00000556 42A9...

Page 51: ...75mm2 3C PC 323 COC 01 L 1830 50mm Black Linetek 18AWG No Bag Green I 1 27 N A PJ0AI1521C Olympic 19 Wide ID BOM D sub DVI Audio China Black VSC 5ms TSUM57AK 1 28 HW 00000590 42A9930013 SCREW M4 P 0...

Page 52: ...CREW D3 8L 4 12 C 00004283 40 D004252 STAND ASSY 1 13 C 00004284 40 D004250 COVER HINGE 1 14 C 00004285 40 D004259 SEAT ASSY 1 EXPLODED PARTS LIST VA1912W 3 ViewSonic Model Number VS10866 Rev 1a Seria...

Page 53: ...Registration card 1 14 C 00004285 40 D004259 Seat 1 15 N A Different region refer to BOM Customer Label 1 PACKING PART LIST VA1912W 3 ViewSonic Model Number VS10866 Rev 1a Item ViewSonic P N Ref P N...

Page 54: ...Corporation Confidential Do Not Copy VA1912w 3_VA1912wb 3 9 Block Diagram OSD Key Pad Audio Out D sub Analog Video Speaker AC Power LDO Main Board LIPS Backlight LCD Module DC 5V 5V Signal Audio In DC...

Page 55: ...H BCKN BCKP BSTH VCM_PWM DCDC_ON OFF PANEL_ON OFF INVERTER I F B2 V12A INV_ADJ INV_ON OFF V33C V5A VOL_ADJ AUDIO_ON AUDIOR AUDIOR AUDIOL AUDIOL AUD_DET LED_GL B3 VGA RIN GIN BIN VSYNC GNDR GNDG GNDB D...

Page 56: ...2 12 13 13 14 14 15 15 16 16 17 17 18 18 19 19 20 20 21 21 22 22 23 23 24 24 25 25 26 26 27 27 28 28 29 29 30 30 31 31 32 32 33 33 34 34 35 35 36 36 CN1 IL FHR F36S HF RoHS CN1 IL FHR F36S HF RoHS 1 1...

Page 57: ...DC 97 GPIO_P15 PWM0 69 PWM2 GPIO_P24 78 GPIO_P12 20 RSTN 22 GPIO_P00 SAR1 23 GPIO_P01 SAR2 24 GPIO_P06 27 GPIO_P07 28 GPIO_P13 30 GPIO_P14 31 GPIO_P16 PWM2 35 DDCROM_SDA 76 DDCROM_SCL 77 RST 19 GA2P N...

Page 58: ...P5 1210 4 7u 25V 5 RoHS R13 0603 4 7K 5 RoHS R13 0603 4 7K 5 RoHS R11 0603 10K 5 OPEN R11 0603 10K 5 OPEN LP3 FBMJ2125HS420 PbF LP3 FBMJ2125HS420 PbF R182 0603 10K 5 RoHS R182 0603 10K 5 RoHS R19 0603...

Page 59: ...603 100n 25V 7 RoHS C43 0603 100n 25V 7 RoHS 1 2 D9 B240A F D9 B240A F GND 1 VOUT 2 VIN 3 VOUT 4 U6 LM1117MPX 3 3 RoHS U6 LM1117MPX 3 3 RoHS C45 0603 100n 25V 7 RoHS C45 0603 100n 25V 7 RoHS C53 0603...

Page 60: ...r OPEN C15 0603 1n 16V 7 C15 0603 1n 16V 7 L20 0603 0R 5 RoHS L20 0603 0R 5 RoHS C123 0603 47n 16V 7 RoHS C123 0603 47n 16V 7 RoHS R34 0603 56R 1 R34 0603 56R 1 R78 0603 75R 1 R78 0603 75R 1 D29 06032...

Page 61: ...Z1608S221 RoHS R3 0603 249R 1 RoHS R3 0603 249R 1 RoHS 1 2 L1 MPZ1608S221 RoHS L1 MPZ1608S221 RoHS R4 0603 249R 1 RoHS R4 0603 249R 1 RoHS 7 8 5 3 1 2 4 6 LP7 BK32164M121 LP7 BK32164M121 1 3 2 Q14 TP0...

Page 62: ...59 ViewSonic Corporation 11 PCB Layout Diagrams Confidential Do Not Copy VA1912w 3_VA1912wb 3...

Page 63: ...60 ViewSonic Corporation Confidential Do Not Copy VA1912w 3_VA1912wb 3...

Page 64: ...61 ViewSonic Corporation Confidential Do Not Copy VA1912w 3_VA1912wb 3...

Page 65: ...4 Circuit Description 5 Adjustment Procedure 6 Troubleshooting Flow Chart 7 Recommended Spare Parts List 8 Exploded Diagram and Exploded Parts List 9 Block Diagrams 10 Schematic Diagrams 11 PCB Layou...

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