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Service Manual

ViewSonic VE720m-1

VE720mb-1

Model No. VS10697

17” Color TFT LCD

Display

(VE720m-1_VE720mb-1_SM Rev. 1b Aug. 2006)

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

Содержание VE720m-1

Страница 1: ...Service Manual ViewSonic VE720m 1 VE720mb 1 Model No VS10697 17 Color TFT LCD Display VE720m 1_VE720mb 1_SM Rev 1b Aug 2006 ViewSonic 381 Brea Canyon Road Walnut California 91789 USA 800 888 8583...

Страница 2: ...arranty 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 the contents hereof without ob...

Страница 3: ...ription 8 4 Circuit Description 12 5 Adjustment Procedure 13 6 Troubleshooting Flow Chart 45 7 Recommended Spare Parts List 53 8 Exploded Diagram and Exploded Parts List 57 9 Block Diagram 60 10 Schem...

Страница 4: ...e LCD display video cable or power cord 9 Do not use abrasive cleaners waxes or solvents for your cleaning 10 Do not operate the product under the following conditions Extremely hot cold or humid envi...

Страница 5: ...dge softly Otherwise the TFT Module may be damaged 10 At the insertion or removal of the Signal Interface Connector be sure not to rotate or tilt the Interface Connector of the TFT Module 11 After ins...

Страница 6: ...urface of the panel is pressed by fingers this may cause MURA Take out the monitor with cushion Take out the monitor by grasping the LCD panel That may cause MURA Place the monitor on a clean soft foa...

Страница 7: ...ctive Off Mode Max 2 W Audio 1 W Yes Tilt 20 2 5 1 5 Yes Swivel No Pivot No Ergonomics Height Adjust 0 100mm OSD Control X X 1 2 Yes Physical W x H x D 386 x 404 x 221 mm 15 2 x 15 9 x 8 7 in Dimensio...

Страница 8: ...compatible with all PC type computers Macintosh computers and after market video cards Resolution Compatibility 640 x 350 640 x 480 720 x 400 640 x 400 800 x 600 832 x 624 1024 x 768 1152 x 870 1280...

Страница 9: ...dered US Type Power Cable Separate 3 prong NEMA 5 15P type plug Length 1 8m Connects to display Color Black European Type Power Cable Schuko CEE7 7 type plug Length 1 8m Connects to display Color Blac...

Страница 10: ...te 1 When Vertical frequency at 85Hz or resolution the vertical image size might not be full screen But the vertical image position should be at the center Primary Presets 1280x1024 60Hz User Presets...

Страница 11: ...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 Main Menu 2 Auto image adjust or To immediately activate Co...

Страница 12: ...ng the front panel control buttons 1 again for 10 seconds Note1 When the OSD is locked will lock all functions including Volume and Mute Note 2 Status bar indicating OSD Lock or Unlock is in progress...

Страница 13: ...e reset by Memory Recall function Should not reset by power off power unplug and others OSD Auto Save The OSD shall save new settings when it is turned off by the user or when it times out There shall...

Страница 14: ...ntal Size H Position H V Position V Position Fine Tune Manual Image Adjust Sharpness English French German Spanish Italian Finnish Japanese Simplified Chinese Language Select Traditional Chinese Resol...

Страница 15: ...nagement The TSUM57AK incorporates the world s first coherent oversampled RGB graphics ADC in a monitor controller system The oversampling ADC samples the input RGB signals at a frequency that is much...

Страница 16: ...nds 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...

Страница 17: ...creen Red Inspection Item Bright Dot Partial Line Defect 12 Green Test Signal 1280 1024 60Hz Test Pattern Full Screen Green Inspection Item Bright Dot Partial Line Defect 13 Blue Test Signal 1280 1024...

Страница 18: ...00_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 Green Full Screen 50 Green Figure 5 6 Blue Full Screen 50 Blue Fig...

Страница 19: ...16 Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 ViewSonic Corporation Confidential Do Not Copy VE720m 1_VE720mb 1...

Страница 20: ...el Printer cable ISP tool Fig 1 Software ISP driver If the O S was Win2000 or Win XP please have to install PORT95NT exe Fig1 In order to ensure can execute ISP program please set BIOS in PC or Notebo...

Страница 21: ...Myson Century website www myson com tw 2 2 After extracting the zip file the total files list as Fig 2 2 and double click the file of setup exe to install Fig 2 2 2 3 Press Next button to continue see...

Страница 22: ...s Change button for selecting the path that you want and then press Next button to continue see Fig 2 4 2 5 Press Install button to continue see Fig 2 5 Fig 2 5 Fig 2 4 ViewSonic Corporation Confident...

Страница 23: ...Information shows package warning press Ignore button to continue see Fig 2 6 Fig 2 6 2 7 Installation has finished press Finish button see Fig 2 7 Fig 2 7 ViewSonic Corporation Confidential Do Not Co...

Страница 24: ...e could find the shortcut in the setting path or the program bar default setting see Fig 3 1 Fig 3 1 2 2 Security file is a key to use ISP function press button see Fig 3 2 Fig 3 2 ViewSonic Corporati...

Страница 25: ...use ISP function fail it is limited by IIC protocol press button see Fig 3 3 Fig 3 3 2 4 Press Create Security File button to key in security code Adjusting bar to decrease speed of IIC bus see Fig 3...

Страница 26: ...different security code between hardware ISP and software ISP The security code of software ISP is set by user while coding but the security code of hardware ISP is set by Myson Century Fig 3 5 ViewS...

Страница 27: ...Fig 3 6 shows the setting for security code of hardware ISP it needs 4 Command No and key in command sequentially for 94 94 AC CA 53 Fig 3 6 ViewSonic Corporation Confidential Do Not Copy VE720m 1_VE7...

Страница 28: ...needs 2 Command No and key in command sequentially for 7C 4C 77 The Command No and command must be set by user while coding About the detail of setting please refer to Section 6 Boot code of ISP Fig...

Страница 29: ...1 4 2 If user changes the MTV type it must load file again or the buffer of load file will be cleared 4 3 CRC cyclic redundancy check the host can check CRC register s result instead of reading every...

Страница 30: ...ontent it is according to program the boot code while coding The limitation is used for the security of customer s code Select Read Target item and press RUN button the MCU content will show as Fig 5...

Страница 31: ...28 5 2 If user uses hardware ISP to read MCU content it shows as Fig 5 2 Fig 5 2 ViewSonic Corporation Confidential Do Not Copy VE720m 1_VE720mb 1...

Страница 32: ...message as below Note 1 Disable the Enter ISP Mode option to avoid the error message display 2 If you using the MTV312M64 or before MCU serials the MCU will always in ISP Mode even programming fail or...

Страница 33: ...are ISP could read the MCU content 5 MTV212M MTV312M MTV230M MTV412M MTV512M CS8954 support software ISP 7 3 Boot code of software ISP 1 Initialize MCU a Define the I O pin to HSCL 1 and HSDA 1 b Defi...

Страница 34: ...31 7 4 The followings show the relationship between the code and the security code ViewSonic Corporation Confidential Do Not Copy VE720m 1_VE720mb 1...

Страница 35: ...r Schematic 9 Adaptor Linking The Monitor Set Connect with Printer Cable 25Pins to 25Pins PC HOST Connect with VGA Cable 15Pins to 15Pins ISP Adaptor ViewSonic Corporation Confidential Do Not Copy VE7...

Страница 36: ...tor in the PE bag and seal the bag with tape Figure 2 Figure 1 Figure 2 1 3 Put the cushions on the monitor Figure 3 1 4 Place the monitor into the carton and then put all the accessories into the car...

Страница 37: ...Disassembly 1 Separate Stand Assy 1 1 Remove Stand Cover Step 1 Remove Seat Assy Step 2 Loose and Remove 4 screws Step 3 Remove Stand Assy Step 4 Completed ViewSonic Corporation Confidential Do Not C...

Страница 38: ...ezel hooks to take Bezel and Rear Cover apart Step 2 Loose and remove 2 screws Step 3 Separate Bezel hooks to take Bezel and Rear Cover apart Step 4 Remove Rear Cover Step 5 Completed Step 1 Remove Co...

Страница 39: ...e the Tinfoil 3 2 Remove FFC 3 3 Remove Metal Cover Step 1 Loose and remove 4 screws Step 2 Loose and remove 6 screws Step 3 Remove the Cover of X PCB Step 4 Completed ViewSonic Corporation Confidenti...

Страница 40: ...37 3 4 Remove Power PCBA Step 1 Loose and remove 3 screws Step 2 Remove Power PCBA Step 3 Completed ViewSonic Corporation Confidential Do Not Copy VE720m 1_VE720mb 1...

Страница 41: ...tep 2 Fasten 3 fixed screws of Power PCBA Step 3 Completed 5 Remove AD PCBA 5 1 Remove FFC Step 1 Remove 2 FFC from AD PCBA Step 2 Completed 5 2 Remove AD PCBA Step 1 Loose and remove 1 screw ViewSoni...

Страница 42: ...p 2 Remove AD PCBA Step 3 Completed 6 Change New AD PCBA Step 1 Place New AD PCBA Step 2 Fasten 1 screw Step 3 Insert 2 FFC Step 4 Completed ViewSonic Corporation Confidential Do Not Copy VE720m 1_VE7...

Страница 43: ...embly Step 1 Join the cover hooks of X PCB Step 2 Fasten the 6 screws Step 3 Fasten 2 screws Step 4 Insert FFC Step 5 Attach the Tinfoil Step 6 Completed ViewSonic Corporation Confidential Do Not Copy...

Страница 44: ...emove 4 screws Step 2 Lift up LCD module and remove Bezel Step 3 Completed 9 Remove OSD PCBA Step 1 Remove FFC Step 2 Separate both Audio Cable Step 3 Loose and remove 2 screws ViewSonic Corporation C...

Страница 45: ...rt Step 5 Completed 10 Change New OSD PCBA Step 1 Place New OSD PCBA Step 2 Fasten 2 screws Step 3 Insert Audit Cable to connectors of OSD PCBA Step 4 Completed ViewSonic Corporation Confidential Do N...

Страница 46: ...3 11 Rear Cover Assy Assembly Step 1 Place Rear Cover Step 2 Join Rear Cover with Bezel Step 3 Fasten 2 screws Step 4 Join Cover Hinge ViewSonic Corporation Confidential Do Not Copy VE720m 1_VE720mb 1...

Страница 47: ...44 12 Stand Assy Assembly Step 1 Place Stand Assy Step 2 Fasten 4 screws to fixed Stand Assy Step 3 Join Seat Assy Step 4 Completed ViewSonic Corporation Confidential Do Not Copy VE720m 1_VE720mb 1...

Страница 48: ...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 Completed Image Remai...

Страница 49: ...wer B Change Check Panel Display Noise Beat Display Shut Down Abnormal Beat Display Flicker No Backlight Display Wave B Panel Change Adapter Change Check Adapter Panel Change Should be Performed to Le...

Страница 50: ...light 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 Ch...

Страница 51: ...Next Step TEST NG AD B Change Panel Change Horizontal Band Defect C Vertical Band Defect Power Saving Display Abnormal Check PCB Check PCBA AD B Change Inverter B Change Power B Change Check PCB Chec...

Страница 52: ...ange 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 Change...

Страница 53: ...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 Loudspeak...

Страница 54: ...Other Abnormal Display Next Step TEST NG Complete TV Function Display Abnormal Panel Change Should be Performed to Level 3 Repair stage Panel Change Check PCBA Check Wire TV B Change AV Cable Change...

Страница 55: ...mage u Adjust Phase l Image too bright u Adjust brightness and contrast by OSD l Image too dark u Adjust brightness and contrast by OSD l Irregular image u Check the signal connection between the comp...

Страница 56: ...nt panel C 00005849 40 D008791 1 14 Stand Assy A170E1 H0P ASSY Black Cherng Jyieh Green II base assembly C 00005882 40 D008682 1 15 Audio Cable A150X2 18AWG 180cm Black JCE Green I CB 00000544 32F2818...

Страница 57: ...1 17 Screw M3 P0 5 4 5 5 2 HW 00000533 42A9930008 1 18 SCREW M4 P 0 7 mm L 15 mm Round Head HW 00005884 42 D001756 1 19 Stand Off 4 40 11 8 HW 00006041 42A9940007 1 20 Miscellaneous TAPE CONDUCTIVE AL...

Страница 58: ...EI2P002 K2P PH0EI2P003 W2P Olympic 17 ID BOM D sub Audio USA Silver Black VSC Height adjustable model Olympic 17 ID BOM D sub Audio China Silver Black VSC Olympic 17 ID BOM D sub Audio European Silver...

Страница 59: ...A9930009 SCREW 3 P 1 12 mm L 10 mm Pan Head Green I 6 28 CB 00000546 3241700001 FFC 1x15x180xc 3 5 3 5 5 0 x 0 035x0 3 15 Pins Green I 1 29 N A 7341311051 Isolated Tape 1 30 P 00000595 7841919921 Bag...

Страница 60: ...Model Title Date Rev ViewSonic Corporation 8 Exploded Diagram and Exploded Parts List ViewSonic Corporation Confidential Do Not Copy VE720m 1_VE720mb 1 57...

Страница 61: ...21 C 00005847 40 D008680 SEAT OFF 4 EXPLODED PARTS LIST VE720m 1 ViewSonic Corporation Confidential Do Not Copy VE720m 1_VE720mb 1 58 ViewSonic Model Number VS10697 Rev 1a Serial No Prefix QEH Item Vi...

Страница 62: ...0E1 H09 White 1 3 P 00000565 7841749915 PE FOAM Bottom EPE 445 130 45mm A170E1 H0A 1 4 P 00000562 7841725265 Carton 450x140x466 A170E1 H0E VSC 1 5 P 00000563 7841535161 Inner Box 348 290 38 A150X2 T05...

Страница 63: ...Diagram OSD Key Pad DC 19V DC DC Main Board Inverter Backlight LCD Module DC 19V D sub Analog Video 3 3V Signal Audio In Speaker Audio Out ViewSonic Corporation Confidential Do Not Copy VE720m 1_VE720...

Страница 64: ...77 AD2 OINV 78 GPO0 83 GPO1 82 GPO2 81 GPO3 80 GPO4 79 DDC1_CLK GPO8 29 DDC1_DAT GPO7 28 AD0 GPO6 30 AD3 GPO5 31 AVDD_PLL 53 AVDD 65 AVSS 64 AVSS_DVI 48 AVSS 68 U1 TSU17AK 57AK U1 TSU17AK 57AK C129 NC...

Страница 65: ...Y RA14 0603 0R 5 RA14 0603 0R 5 CA19 1206 2 2u 16V 7 E CA19 1206 2 2u 16V 7 E RA3 0603 100K 5 RA3 0603 100K 5 RA4 0603 4 7K 5 RA4 0603 4 7K 5 CA13 0603 47p 50V N CA13 0603 47p 50V N RA1 0603 1K 5 RA1...

Страница 66: ...22ALT1G CP18 0603 1u 10V Y CP18 0603 1u 10V Y TP 1 onPanel2 onPanel2 S 1 S 3 S 2 D 6 D 7 D 8 G 4 D 5 QP5 CEM9435AG QP5 CEM9435AG RP25 0603 100R 5 RP25 0603 100R 5 RP33 0603 12K 1 RP33 0603 12K 1 1 3 2...

Страница 67: ...5 1 3 2 D33 BAV99 D33 BAV99 R138 0603 10R 5 R138 0603 10R 5 0603 100n 25V Y C137 0603 100n 25V Y C137 D47 UDZSF 5 6B D47 UDZSF 5 6B R135 0603 10R 5 R135 0603 10R 5 1 2 3 D5 BAV70W D5 BAV70W 1 3 2 D34...

Страница 68: ...V Y C44 1206 10u 16V Y 1 2 3 Q3 MMBT3904 F Q3 MMBT3904 F R150 0603 7 5K 5 R150 0603 7 5K 5 D26 1N4148WS D26 1N4148WS 1 2 3 Q16 SST3906F Q16 SST3906F A0 1 A1 2 A2 3 GND 4 SDA 5 SCL 6 WP 7 VCC 8 U5 AT24...

Страница 69: ...33 33 34 34 35 35 36 36 37 37 38 38 39 39 40 40 41 41 42 42 43 43 44 44 45 45 CN5 FH12 45S 0 5SH CN5 FH12 45S 0 5SH L12 FBMJ2125HS420 L12 FBMJ2125HS420 1 2 R126 OPEN R126 OPEN TP 1 VGL1 VGL1 TP 1 VCO...

Страница 70: ...2 0603 100n 25V Y R90 0603 1 2R 1 R90 0603 1 2R 1 1 GMA5 GMA5 TP 1 V181 V181 R91 0603 174R 1 R91 0603 174R 1 C81 0603 100n 25V Y C81 0603 100n 25V Y GND 1 VO 3 3V 2 VI 5V 3 VO 3 3V 4 U10 AMC1117 3 3SK...

Страница 71: ...V N R17 0603 75R 5 R17 0603 75R 5 D14 VPORT0603220KV05T D14 VPORT0603220KV05T C40 0603 220p 50V N C40 0603 220p 50V N R25 0603 100R 5 R25 0603 100R 5 R10 0603 0R 5 R10 0603 0R 5 C35 0603100KV05T C35 0...

Страница 72: ...Model Title Date Rev ViewSonic Corporation 11 PCB Layout Diagrams ViewSonic Corporation Confidential Do Not Copy VE720m 1_VE720mb 1 69 TOP...

Страница 73: ...Model Title Date Rev ViewSonic Corporation ViewSonic Corporation Confidential Do Not Copy VE720m 1_VE720mb 1 70 INT2...

Страница 74: ...Model Title Date Rev ViewSonic Corporation ViewSonic Corporation Confidential Do Not Copy VE720m 1_VE720mb 1 71 INT3...

Страница 75: ...Title Date Rev ViewSonic Corporation ViewSonic Corporation Confidential Do Not Copy VE720m 1_VE720mb 1 72 Model BOT...

Страница 76: ...Model Title Date Rev ViewSonic Corporation ViewSonic Corporation Confidential Do Not Copy VE720m 1_VE720mb 1 73 TMASK...

Страница 77: ...Model Title Date Rev ViewSonic Corporation ViewSonic Corporation Confidential Do Not Copy VE720m 1_VE720mb 1 74 BMASK...

Страница 78: ...Model Title Date Rev ViewSonic Corporation ViewSonic Corporation Confidential Do Not Copy VE720m 1_VE720mb 1 75 TPASTE...

Страница 79: ...Model Title Date Rev ViewSonic Corporation ViewSonic Corporation Confidential Do Not Copy VE720m 1_VE720mb 1 76 DRILL...

Страница 80: ...Model Title Date Rev ViewSonic Corporation ViewSonic Corporation Confidential Do Not Copy VE720m 1_VE720mb 1 77 TSILK...

Страница 81: ...hart 7 Recommended Spare Parts List 8 Exploded Diagram and Exploded Parts List 9 Block Diagrams 10 Schematic Diagrams 11 PCB Layout Diagrams B Are you satisfied with this Service Manual Item Excellent...

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