ViewSonic VE720m-1 User Manual Download

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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

Summary of Contents for VE720m-1

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

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

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

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

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

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

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

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

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

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

Page 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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