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ViewSonic VE1920wmb-2

Model No. VS1

0866

19” Color TFT LCD

Display

(VA1920wmb-2_SM Rev. 1a Aug. 2006)

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

Service Manual

Содержание VE1920wmb-1

Страница 1: ...ViewSonic VE1920wmb 2 Model No VS10866 19 Color TFT LCD Display VA1920wmb 2_SM Rev 1a Aug 2006 ViewSonic 381 Brea Canyon Road Walnut California 91789 USA 800 888 8583 Service Manual...

Страница 2: ...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 revise...

Страница 3: ...Notices 1 2 Specification 3 3 Front Panel Function Control Description 7 4 Circuit Description 11 5 Adjustment Procedure 12 6 Troubleshooting Flow Chart 32 7 Recommended Spare Parts List 40 8 Exploded...

Страница 4: ...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 made...

Страница 5: ...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 the LC...

Страница 6: ...ive Off Mode Max 1W Audio Amplifier Speaker 1 5 W 2 5W x 2 Tilt 20 to 5 Yes Swivel No Pivot No Ergonomics Height Adjust 0 100mm OSD Control X 1 2 Yes Physical W x H x D mm 451 x 426 x 221 mm 17 8 x 16...

Страница 7: ...the image vertical position should be at the center Exclusions Not compatible with interlaced video POWER SUPPLY Power Supply Adapter Part Number 27 D003247 Input Voltage Range 90 to 264 VAC Input Fr...

Страница 8: ...2 W typ ACTIVE OFF 1 W Recovery Time ON Mode N A ACTIVE OFF 5 sec ELECTRICAL REQUIREMENT Horizontal Vertical Frequency Horizontal Frequency 30 82 kHz Vertical Refresh Rate 50 85 Hz Maximum Pixel Clock...

Страница 9: ...be full screen Primary Presets 1440 x 900 60Hz User Presets Number of User Presets recognized timings Available 10 presets total in FIFO configuration Changing Modes Maximum Mode Change Blank Time for...

Страница 10: ...tton 2 and Mute Button must be one shot logic operation i e there should be no cycling Reaction Time OSD must fully appear within 0 5s after pushing Button 1 Short Cuts Function from the button s 1 Ma...

Страница 11: ...then tries to access the OSD by pressing any of the buttons 1 2 a message will appear on the screen for 3 seconds showing OSD Locked The OSD lock will be deactivated by pressing the front panel contr...

Страница 12: ...otice 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 should be reset by Memory Recall function Should not reset by...

Страница 13: ...6500K 5400K 5000K Red Green Color Adjust User Color Blue Information Horizontal Size H Position H V Position V Position Fine Tune Manual Image Adjust Sharpness English French German Spanish Italian F...

Страница 14: ...apability 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 system Th...

Страница 15: ...onitor keypad to Auto Adjust C The LCD monitor will start the Auto Adjust process automatically and run for 10 consecutive seconds during which time you will notice the image change 3 Firmware Test Pa...

Страница 16: ...tern Window standard pattern Inspection Item Bright Dot Line Defect Power 11 RED Test Signal 1280 1024 60Hz Test Pattern Full Screen Red Inspection Item Bright Dot Partial Line Defect 12 Green Test Si...

Страница 17: ...64 256 Gray Scale From 0 to 100 White Figure 1 2 Gray_Scale_0 100_H Horizontal 64 256 Gray Scale From 0 to 100 White Figure 2 3 Black Full Screen Black Figure 3 4 Red Full Screen 50 Red Figure 4 5 Gre...

Страница 18: ...15 ViewSonic Corporation Confidential Do Not Copy VE1920wmb 2 Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8...

Страница 19: ...ar 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 and D s...

Страница 20: ...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 program...

Страница 21: ...o 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 that the...

Страница 22: ...19 ViewSonic Corporation Confidential Do Not Copy VE1920wmb 2 Step 7 When select ReConnect and press Run then repeat to connect the mode of ISP into next the action of BIOS procedure...

Страница 23: ...d Assy 1 1 Remove Seat Assy 1 2 Separate Stand Assy Step 1 Press Stand Assy s bottom part in Seat Hinge Step 2 Remove Seat Assy Step 1 Loose and Remove 2 screws Step 2 Remove Stand Assy 20 ViewSonic C...

Страница 24: ...o take Bezel and Rear Cover apart Step 2 Loose and Remove 2 screws Step 5 Completed Step 1 Remove Cover Hinge Step 3 Separate Bezel hooks to take Bezel and Rear Cover apart Step 4 Remove Rear Cover 21...

Страница 25: ...Step 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 22 Vie...

Страница 26: ...Board Step 6 Loose and remove 4 screws Step 7 Loose and remove 2 screws Step 8 Loose and remove 4 screws Step 9 Remove the PCBA Cover Step 1 Loose and remove 4 screws 23 ViewSonic Corporation Confide...

Страница 27: ...Completed Step 2 Remove Lips Board Step 3 Remove 2 pieces of FFCs Step 4 Remove the FFC Step 5 Loose and remove 4 screws Step 6 Remove AD PCBA 24 ViewSonic Corporation Confidential Do Not Copy VE1920...

Страница 28: ...er Board Step 1 Place new AD Board And fasten 4 fixed screws Step 3 Insert FFC Step 4 Insert 2 pieces of FFCs Step 2 Fasten 4 fixed screws Step 5 Insert new Lips Board 25 ViewSonic Corporation Confide...

Страница 29: ...Remove OSD Board Step 1 Separate both Audio Cable Step 2 Take OSD Board apart Step 3 Completed Step 6 Fasten 4 fixed screws Step 7 Completed 26 ViewSonic Corporation Confidential Do Not Copy VE1920wmb...

Страница 30: ...ink 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 Fasten 2 fixed screws Step 3 Completed 27 ViewSoni...

Страница 31: ...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 Step 8 Fasten 4 fixed screws 28 ViewSonic Corporation Confidential Do...

Страница 32: ...8 Rear Cover Assy Assembly Step 10 Completed Step 9 Insert FFC Step 1 Place Rear Cover Step 2 Fasten 2 screws Step 3 Remove Cover Hinge 29 ViewSonic Corporation Confidential Do Not Copy VE1920wmb 2...

Страница 33: ...9 Stand Assy Assembly Step 1 Place Seat Assy Step 2 Fasten 4 screws Step 3 Join Seat Assy 30 ViewSonic Corporation Confidential Do Not Copy VE1920wmb 2...

Страница 34: ...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 into t...

Страница 35: ...Repair Testing Flash Dots Bright Dot Dark 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 L...

Страница 36: ...B Change 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...

Страница 37: ...No Backlight 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...

Страница 38: ...al Weak 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 A...

Страница 39: ...er B 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...

Страница 40: ...ge OSD 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 Lou...

Страница 41: ...ange 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 Ca...

Страница 42: ...ay Mode 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...

Страница 43: ...2 mmx76 2 mm DC 00008035 77 D011986 1 17 CD ROM Menu DC 00008036 76 D011994 1 18 Hardware SCREW 3 P 0 5 mm L 4 mm HW 00000553 42A9930008 16 19 SCREW 3 P 0 5 mm L 4 mm HW 00000553 42A9930008 4 20 SCREW...

Страница 44: ...Round Head Phillips Cross Recess Zn Black Screw with Washer Hama Naka Motogawa Shye Ching Green I 4 28 C 00004284 40 D004250 Cover Hinge A190A2 H05 ABS PA757N Black J91A11B5 Fuking Green I 1 29 C 000...

Страница 45: ...AK01 PANEL ASSY 1 3 N A 41 D004053 BACKLIGHT FRONT COVER 1 4 HW 00000553 42A9930008 SCREW M3 4L 2 5 B 00006039 27 D003247 POWER PCB ASSY 1 6 B 00005705 35 D005062 AD PCB ASSY 1 7 HW 00000553 42A993000...

Страница 46: ...Right 1 4 P 00006050 78 D009098 PS Foam Left 1 5 N A Different region refer to BOM Carton 1 6 N A Different region refer to BOM Power Cord 1 7 CB 00004287 32F3018003 Monitor Cable 1 8 CB 00000544 32F2...

Страница 47: ...ation Confidential Do Not Copy VE1920wmb 2 9 Block Diagram OSD Key Pad Audio Out D sub Analog Video Speaker AC Power LDO Main Board LIPS Backlight LCD Module DC 5V DVI D Digital Video 5V Signal Audio...

Страница 48: ...H 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 DDCA_DAT DDCA_CL...

Страница 49: ...36 DDCD_SCL 37 PWM0 GPIO_P26 29 AVDD_DVI 50 VDDC 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 PW...

Страница 50: ...P2 FBMJ2125HS420 PbF CP5 1210 4 7u 25V 5 RoHS CP5 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 R18...

Страница 51: ...3 2K 1 1 2 3 D7 BAV70W open D7 BAV70W open C43 0603 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 10...

Страница 52: ...S D1 0603 10p varistor OPEN D1 0603 10p varistor 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 060...

Страница 53: ...3 0603 100p 50V N C163 0603 100p 50V N C28 0603 100n 25V 7 C28 0603 100n 25V 7 1 2 L6 BK1608LL121 RoHS L6 BK1608LL121 RoHS 1 2 D13 UDZSF 5 6B PbF D13 UDZSF 5 6B PbF R37 0603 0R 5 RoHS R37 0603 0R 5 Ro...

Страница 54: ...F Q12 TP0610K PbF 1 2 L2 MPZ1608S221 RoHS L2 MPZ1608S221 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...

Страница 55: ...B1P FB2N FB2P POL STB FCKN FCKP FG2P FG1P FG0P FG1N FG0N FG2N FR0P FR1N FR1P FR2N FR2P FR0N FSTH V12A V5A PANEL_ON OFF DCDC_ON OFF VCM_PWM GVOFF BSTH BR1N BR2N BR2P BR0P BR0N BR1P BG0N BG2N BG1P BG2P...

Страница 56: ...53 ViewSonic Corporation Confidential Do Not Copy VE1920wmb 2 11 PCB Layout Diagrams...

Страница 57: ...54 ViewSonic Corporation Confidential Do Not Copy VE1920wmb 2...

Страница 58: ...55 ViewSonic Corporation Confidential Do Not Copy VE1920wmb 2...

Страница 59: ...56 ViewSonic Corporation Confidential Do Not Copy VE1920wmb 2...

Страница 60: ...57 ViewSonic Corporation Confidential Do Not Copy VE1920wmb 2...

Страница 61: ...rcuit 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 Layout Dia...

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