ViewSonic VS10931 User Manual Download

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Service Manual

ViewSonic VE920m-1

VE920mb-1

Model No. VS10931

19” Color TFT LCD

Display

(VE920m-1_VE920mb-1_SM Rev. 1b Aug. 2006)

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

Summary of Contents for VS10931

Page 1: ...Service Manual ViewSonic VE920m 1 VE920mb 1 Model No VS10931 19 Color TFT LCD Display VE920m 1_VE920mb 1_SM Rev 1b Aug 2006 ViewSonic 381 Brea Canyon Road Walnut California 91789 USA 800 888 8583 ...

Page 2: ...y 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 the contents hereof without obligation of ViewSonic to notify any person of such revision or changes Trademarks Optiquest is a registered trademark of ViewSonic Corporation ViewSonic is a registered trademark of ViewSonic Corpo...

Page 3: ...cription 8 4 Circuit Description 13 5 Adjustment Procedure 14 6 Troubleshooting Flow Chart 49 7 Recommended Spare Parts List 57 8 Exploded Diagram and Exploded Parts List 61 9 Block Diagram 64 10 Schematic Diagrams 65 11 PCB Layout Diagrams 75 ViewSonic Corporation Confidential Do Not Copy VE920m 1_VE920mb 1 ...

Page 4: ...t under the following conditions Extremely hot cold or humid environment Areas containing excessive dust and dirt Near any appliance generating a strong magnetic field In direct sunlight 2 Caution No modification of any circuit should be attempted Service work should only be performed after you are thoroughly familiar with all of the following safety checks and servicing guidelines 3 Safety Check ...

Page 5: ...sure not to rotate or tilt the Interface Connector of the TFT Module 11 After installation of the TFT Module into an enclosure LCD monitor housing for example do not twist or bend the TFT Module even momentarily When designing the enclosure it should be taken into consideration that no bending twisting forces may be applied to the TFT Module from outside Otherwise the TFT Module may be damaged 12 ...

Page 6: ...r 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 LCD panel That may cause MURA Place the monitor on a clean soft foam pad Place the monitor on foreign objects That could scratch the surface of panel ViewSonic Corporation Confidential Do Not Copy VE920m 1_VE920mb 1 ...

Page 7: ...ntrol X X 1 2 Yes Physical W x H x D mm 423 x 434 x 221 mm 16 7 x 17 1 x 8 7 in Dimension Package W x H x D mm 474 x 475 x 184 mm 17 6 x 18 7 x 7 2 in Physical Net kg lb 5 2 kg 11 5 lb Weight Package Gross Kg lb 6 8 kg 15 0 lb Temperature 41 95 5 35 Operating Condition Humidity 20 80 Temperature 4 131 20 55 Storage Condition Humidity 20 85 Regulation UL cUL FCC B CB CE NOM TUV GS TUV ERGO covers I...

Page 8: ...x 870 1280 x 720 1280 x 960 1280 x 1024 The image vertical size might not be full screen But the image vertical position should be at the center Exclusions Not compatible with interlaced video POWER SUPPLY Power Supply Adapter Part Number 27 D003115 Input Voltage Range 100 to 240 VAC Input Frequency Range 50 to 60 Hertz Short Circuit Protection OUTPUT CAN BE SHORTED WITHOUT DAMAGE Over Current Pro...

Page 9: ...ot be considered 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 Black CCC Type Power Cable Separate 3 prong type plug Length 1 8m Connects to display Color Black Power Saving Operation Method VESA DPMS Signaling Power Consumption ON Mode 58 W max ACTIVE OFF...

Page 10: ...80 x 1024 60Hz 63 4kHz Yes No 23 1280 x 1024 75Hz 79 97kHz Yes No 24 1280x 720 60Hz 45kHz HDTV Yes No Note 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 Note2 The vertical image size might not be full screen Primary Presets 1280x1024 60Hz User Presets Number of User Presets recognized timings...

Page 11: ...n 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 Main Menu 2 Auto image adjust or To immediately activate Contrast menu It should be change to Brightness OSD by push button 2 Recall both of Contrast and Brightness to default 1 2 Toggle 720x400 and 640x400 mode when input 720x400 or 640x400 mode 1 White B...

Page 12: ...3 Setup Menu Language English French German Spanish Italian Finnish Japanese Traditional Chinese Simplified Chinese Resolution Notice OSD Position OSD Timeout OSD Background Memory Recall 1 These functions are not available in Digital Mode 2 These functions are not available under sRGB Mode 3 These functions are not available under Native Resolution Mode 4 These functions setting can be recalled t...

Page 13: ...is not in the locked mode then power should return to it s previous state when power is restored after a power failure The power button lock will be deactivated by pressing the front panel control buttons 1 again for 10 seconds Note 1 Status bar indicating Power Button lock or unlock is in progress and when complete it will indicate Power Button Locked Note 2 Power should only be lockable in the O...

Page 14: ...kHz Vibration There should be no audible vibration with volume at 100 Input signal within 1 Vrms Screen image There should be no affect on the screen image stability under any conditions Connector PC99 requirement Audio in Lime Green pantone 577C Cable type length 3 5mm stereo cable 1 8m length Audio DPMS NOTE THERE IS NO GUARANTEE 1 W POWER CONSUMPTION IN ACTIVE OFF MODE WHEN THE AUDIO CABLE IS C...

Page 15: ...zontal 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 Resolution Notice On Off Input Priority On Off H Position OSD Position V Position OSD Time Out 5 15 30 60 Setup Menu OSD Background On Off Memory Recall ViewSonic Corporation Confidential Do Not Copy VE9...

Page 16: ...anagement 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 higher than the signal source pixel rate This can preserve details in the video signal that ordinarily would be lost due to input signal jitter or bandwidth limitations in non oversampled systems Th...

Page 17: ... Auto Adjust process automatically and run for 10 consecutive seconds 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 program Make sure it can pass test program 5 Window Shut Down Test Signal 1280 1024 60Hz Test Pattern Checkered Pattern Every One Pixe...

Page 18: ...efect Power 11 RED Test Signal 1280 1024 60Hz Test Pattern Full Screen 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 60Hz Test Pattern Full Screen Green Inspection Item Bright Dot Partial Line Defect 14 Gray_Scale_0 100_V64 Test Signal 1280 1024 60Hz ...

Page 19: ...100_H Horizontal 64 256 Gray Scale 上下 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 Figure6 7 White Full Screen White Figure7 8 Black_Tile Black Tile Under White Background Figure 8 ViewSonic Corporation Confidential Do Not Copy VE920m 1_VE920mb 1 ...

Page 20: ...17 Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 ViewSonic Corporation Confidential Do Not Copy VE920m 1_VE920mb 1 ...

Page 21: ...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 Notebook as Fig 2 Fig 2 ViewSonic Corporation Confidential Do Not Copy VE920m 1_VE920mb 1 ...

Page 22: ... 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 Fig 2 3 Fig 2 3 ViewSonic Corporation Confidential Do Not Copy VE920m 1_VE920mb 1 ...

Page 23: ...ss 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 Confidential Do Not Copy VE920m 1_VE920mb 1 ...

Page 24: ... 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 Copy VE920m 1_VE920mb 1 ...

Page 25: ...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 確定 button see Fig 3 2 Fig 3 2 ViewSonic Corporation Confidential Do Not Copy VE920m 1_VE920mb 1 ...

Page 26: ...se ISP function fail it is limited by IIC protocol press 確定 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 4 Fig 3 4 ViewSonic Corporation Confidential Do Not Copy VE920m 1_VE920mb 1 ...

Page 27: ...d 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 ViewSonic Corporation Confidential Do Not Copy VE920m 1_VE920mb 1 ...

Page 28: ... 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 VE920m 1_VE920mb 1 ...

Page 29: ...t 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 3 7 ViewSonic Corporation Confidential Do Not Copy VE920m 1_VE920mb 1 ...

Page 30: ...4 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 byte in flash The message of Check MCU CRC OK means that the Host verify ok for the progress of program Fig 4 1 ViewSonic Corporation Confidential Do Not Copy VE920m 1_VE920mb 1 ...

Page 31: ...content 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 1 Fig 5 1 ViewSonic Corporation Confidential Do Not Copy VE920m 1_VE920mb 1 ...

Page 32: ...29 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 VE920m 1_VE920mb 1 ...

Page 33: ...30 6 Re entry the ISP Mode When you could not select or click Reset MCU button and enter ISP mode again you refer the message as below ViewSonic Corporation Confidential Do Not Copy VE920m 1_VE920mb 1 ...

Page 34: ...d 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 erase MCU that instead of select or press Reset MCU ViewSonic Corporation Confidential Do Not Copy VE920m 1_VE920mb 1 ...

Page 35: ...ware 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 Define the slave B address c Enable 8051 INT1 ISR 2 2 Coding for INT1 while get into ISP mode a Clear watchdog to prevent reset during ISP period b Disable all interrupt to prevent CPU wake up c Write IS...

Page 36: ...33 7 4 The followings show the relationship between the code and the security code ViewSonic Corporation Confidential Do Not Copy VE920m 1_VE920mb 1 ...

Page 37: ...r Schematic 9 Adatptor 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 VE920m 1_VE920mb 1 ...

Page 38: ...eal 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 carton As last close the carton and seal it with tape Figure 4 Figure 3 Figure 4 ViewSonic Corporation Confidential Do Not Copy VE920m 1_VE920mb 1 ...

Page 39: ...ssy 5 1 1 Remove Seat Assy 5 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 ViewSonic Corporation Confidential Do Not Copy VE920m 1_VE920mb 1 36 ...

Page 40: ...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 37 ViewSonic Corporation Confidential Do Not Copy VE920m 1_VE920mb 1 ...

Page 41: ... Remove Power Board 5 3 1 Remove FFC 5 3 3 Remove Metal Cover 5 3 2 Lift up LCD module and remove Bezel Step 1 Loose and remove 4 screws 38 ViewSonic Corporation Confidential Do Not Copy VE920m 1_VE920mb 1 ...

Page 42: ...Step 5 Remove 2 pieces of Backlight wires Step 2 Loose and remove 2 screws Step 3 Loose and remove 2 screws Step 4 Remove the tape 39 ViewSonic Corporation Confidential Do Not Copy VE920m 1_VE920mb 1 ...

Page 43: ...ove the PCBA Cover 5 3 4 Remove Power PCBA Step 1 Remove 2 pieces of Backlight wires Step 2 Loose and remove 4 screws Step 3 Remove Power PCBA 40 ViewSonic Corporation Confidential Do Not Copy VE920m 1_VE920mb 1 ...

Page 44: ...emove AD PCBA 5 5 1 Remove FFC Step 1 Remove 2 FFCs Step 1 Insert New Power PCBA Step 2 Fasten 2 fixed screws of Power PCBA Step 3 Insert 2 pieces of Backlight wires 41 ViewSonic Corporation Confidential Do Not Copy VE920m 1_VE920mb 1 ...

Page 45: ...Step 5 Completed Step 3 Loose and remove 4 screws Step 4 Remove AD PCBA 42 ViewSonic Corporation Confidential Do Not Copy VE920m 1_VE920mb 1 ...

Page 46: ...5 6 Change New AD PCBA Step 1 Insert New AD PCBA Step 4 Insert 2 FFC Completed Step 2 Fasten 4 screws Step 3 Insert FFC 43 ViewSonic Corporation Confidential Do Not Copy VE920m 1_VE920mb 1 ...

Page 47: ... Metal Cover Assembly Step 1 Place the PCBA Cover Step 2 Insert 2 pieces of Backlight wires Step 3 Join the tape Step 4 Fasten 2 screws 44 ViewSonic Corporation Confidential Do Not Copy VE920m 1_VE920mb 1 ...

Page 48: ...Step 7 Place LCD module to LCD Bezel Step 5 Fasten 2 screws Step 6 Fasten 2 screws Step 8 Insert FFC 45 ViewSonic Corporation Confidential Do Not Copy VE920m 1_VE920mb 1 ...

Page 49: ...5 8 Remove OSD PCBA Step 3 Completed Step 1 Separate both Audio Cable Step 2 Take OSD PCBA apart 46 ViewSonic Corporation Confidential Do Not Copy VE920m 1_VE920mb 1 ...

Page 50: ...CBA 5 10 Rear Cover Assy Assembly Step 1 Place Rear Cover Step 1 Place New OSD PCBA Step 2 Insert Audio Cable to connectors of OSD PCBA Step 3 Completed 47 ViewSonic Corporation Confidential Do Not Copy VE920m 1_VE920mb 1 ...

Page 51: ... Stand Assy Assembly Step 2 Fasten 2 screws Step 3 Remove Cover Hinge Step 1 Place Seat Assy Step 2 Fasten 4 screws Step 3 Join Seat Assy 48 ViewSonic Corporation Confidential Do Not Copy VE920m 1_VE920mb 1 ...

Page 52: ...eakage Mura Image Sticking Brightness spot Particle Dot Defect Check Panel Light On Test Next Step Panel Change Should be Performed to Level 3 Repair stage Abnormal Display TEST NG A Completed Image Remain Group Bright Dots Others Cosmetics Defect Panel Change ViewSonic Corporation Confidential Do Not Copy VE920m 1_VE920mb 1 ...

Page 53: ...ower 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 Level 3 Repair stage Check PCBA AD B Change Power B Change CNT B Change Check Panel Panel Change 50 ViewSonic Corporation Confidential Do Not Copy VE920m 1_VE920mb 1 ...

Page 54: ...klight 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 Check Panel Panel Change OSD B Change Check PCBA Adapter Change Check Adapter Panel Change Should be Performed to Level 3 Repair stage 51 ViewSonic Corporation Confidential Do Not Copy VE920m 1_VE920mb...

Page 55: ...e 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 Check PCBA AD B Change Panel Change Should be Performed to Level 3 Repair stage Complete 52 ViewSonic Corporation Confidential Do Not Copy VE920m 1_VE920mb 1 ...

Page 56: ...hange 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 AD B Change LED Loss Turn Off Abnormal Check PCBA Check Wire Next Step TEST NG Completed Panel Change Should be Performed to Level 3 Repair stage 53 ViewSonic Corporation Confidential Do Not Copy VE...

Page 57: ...D 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 Loudspeaker Inverter B Change Power B Change OSD B Change OSD Cable Change Loudspeaker Change Loudspeaker Noise Panel Change Should be Performed to Level 3 Repair stage Completed Next Step TEST NG 54 ViewSoni...

Page 58: ...e 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 Remote controller Change Check Controller DVI Signal Display Abnormal Check PCB Check PCB Check PCB Check EDID Code AD B Change EDID Update 55 ViewSonic Corporation Confidential Do Not Copy VE920m 1_...

Page 59: ...Image 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 computer and LCD monitor u Perform Auto Adjust l Distorted image u Reset the LCD monitor u Take off extra accessories such as signal extension cord l Image is not centered u Use OSD Image Menu to adjust ...

Page 60: ...1C Yi Ching VSC VE920m 1 Caution Card Green II DC 00005953 76 D009060 1 20 CD ROM for A190E3 H0M Complex 1C Yi Ching VSC VE920m 1Green II DC 00005954 76 D009062 1 21 Carton Label for A190E3 H0M 76 2 mmx76 2 mm Chang Huang VSC VE920m 1 Green II DC 00005957 77 D009064 1 22 Screw M3 P0 5 4 φ5 5 2 HW 00000553 42A9930008 2000 23 Screw M3 P1 27 12 φ5 5 2 HW 00000556 42A9990005 2000 24 SCREW M4 P 0 7 mm ...

Page 61: ...0005 2000 19 SCREW M4 P 0 7 mm L 8 mm HW 00004042 42 D000649 2000 20 SCREW M4 P 0 7 mm L 15 mm HW 00005884 42 D001756 2000 21 SCREW 4 P 0 mm L 11 8 mm HW 00006041 42A9940007 2000 22 Miscellaneous Tape Security Tape OPP L900xW50x0 045mm M 00000560 7345511002 1 23 PE Foam Bag P 00000595 7841919921 1 24 Generic Foam Set P 00001347 30833 25 GenericCarton P 00002515 20653 26 Craft Foam Left P 00005955 ...

Page 62: ...1800 mm GreenII W2M 32 D002330 1 29 N A PJ0EI2M000 A2M PJ0EI2M002 C2M PJ0EI2M001 E2M PJ0EI2M003 K2M PJ0EI2M004 W2M Olympic 19 ID BOM D sub Audio USA Silver Black VSC Olympic 19 ID BOM D sub Audio China Silver Black VSC Olympic 19 ID BOM D sub Audio European Silver Black VSC Olympic 19 ID BOM D sub Audio UK Silver Black VSC Olympic 19 ID BOM D sub Audio TWN Silver Black VSC 1 30 HW 00000556 42A9990...

Page 63: ...000560 7345511002 Tape A170E1 H0P 900 mmx50 mmx0 mm 0 058 29 PL 00005958 73 D001222 Panel Protector Film A190E2 H06 mylar 400X325X0 1 MM Green I 1 30 HW 00005884 42 D001756 SCREW M4 P 0 7 mm L 15 mm Round Head Green I 4 31 N A 78 D002030 Corner Protector 5mm A170E1 H0M 50 mmx50 mmx1850 mm Green I 0 083 32 N A 77 D002070 SN Label for A170E1 H0M 75 mmx40 mm Pallet Bar Code Label A170E1 H0M Green I 0...

Page 64: ...Model Title Date Rev ViewSonic Corporation 8 Exploded Diagram and Exploded Parts List 61 ViewSonic Corporation Confidential Do Not Copy VE920m 1_VE920mb 1 ...

Page 65: ...10 C 00005847 40 D008680 SEAT ASSY 1 EXPLODED PARTS LIST VE920m 1 62 ViewSonic Corporation Confidential Do Not Copy VE920m 1_VE920mb 1 ViewSonic Model Number VS10931 Rev 1a Serial No Prefix QEJ Item ViewSonic P N Ref P N Description Q ty 1 N A MJ0E501K01 ISM_A190E3_HAT 1 2 C 00008027 40 D012371 BEZEL ASSY 1 2 1 N A 40 D003809 BEZEL 1 2 2 N A 40 D003811 LENS 1 2 3 N A 40 D003805 KEYPAD 1 2 4 N A 33...

Page 66: ...Carton 1 6 N A Different region refer to BOM Power Cord 1 7 CB 00004287 32F3018003 Monitor Cable 1 8 CB 00000544 32F2818004 Audio Cable 1 9 N A N A DVI Cable 1 10 N A Different region refer to BOM Menu Quick Setup 1 11 N A Different region refer to BOM Menu CD ROM 1 12 N A Different region refer to BOM Warranty Registration Card 1 PACKING PART LIST VE920m mb 1 ViewSonic Model Number VS10931 ViewSo...

Page 67: ...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 12V 12V 3 3V ViewSonic Corporation Confidential Do Not Copy VE920m 1_VE920mb 1 ...

Page 68: ...G1N OG2P OB0N OB0P OB1N OB1P OB2N OB2P ER0N ER0P ER1N ER1P ER2N ER2P EG0N EG0P EG1N EG1P EG2N EG2P EB0N EB0P EB1N EB1P EB2N EB2P V5A B4 MCU CSZ SCL SDA OPTION2 OPTION1 DDC_CLK DDC_DAT INT INV_ON OFF HWRESET VCM_PWM DCDC_ON OFF PANEL_ON OFF XAO AD0 AD1 AD2 AD3 AUDIO_ON SOURCE_SELECT MENU KEY_DOWN KEY_UP AUTO_ADJ LED_OR LED_GR PWR_SW V5A VGA_5V B5 DC DC DCDC_ON OFF VGH VGL VAA V5A V5 INVERTER I F B9...

Page 69: ...P38 CP38 RP11 RP11 CP17 CP17 RP6 RP6 RP3 RP3 1 3 2 D3 D3 RP53 RP53 CP28 CP28 RP8 RP8 CP37 CP37 RP37 RP37 RP49 RP49 CP22 CP22 1 3 2 QP4 QP4 1 3 2 QP2 QP2 CP39 CP39 CP19 CP19 1 3 2 QP17 QP17 CP6 CP6 LP5 LP5 RP14 RP14 LP4 LP4 CP18 CP18 RP20 RP20 CP2 CP2 OSC 7 FB 8 GND 6 BR CTL 4 IN 1 VCC 3 OUT 5 SCP 2 UP1 UP1 RP51 RP51 CP40 CP40 RP48 RP48 TP 1 V5A1 V5A1 RP52 RP52 CP10 CP10 1 3 2 D2 D2 CP36 CP36 RP12 ...

Page 70: ...ND 15 HPD 16 G 26 RGB GND 29 DAT0 17 DAT0 18 0 5shield 19 DAT5 20 DAT5 21 clk shield 22 clk 23 clk 24 B 27 CON1 CON1 1 2 D5 D5 1 3 2 D11 D11 C36 C36 R16 R16 C31 C31 C32 C32 R213 R213 D17 D17 R17 R17 1 2 3 D7 D7 R13 R13 C37 C37 R18 R18 C33 C33 1 3 2 D15 D15 1 2 D8 D8 1 3 2 D12 D12 R11 R11 R19 R19 R14 R14 NC 1 NC 2 NC 3 GND 4 SDA 5 SCL 6 VCLK 7 VCC 8 U2 U2 C39 C39 C38 C38 R12 R12 C34 C34 R9 R9 1 2 D...

Page 71: ...INV_ADJ INV_ON OFF V33C V5 GND_INV GND_POWER GND_POWER V33C V33C 1 2 3 Q19 Q19 R198 R198 R196 R196 C30 C30 8 7 6 5 4 3 2 1 CN2 CN2 R195 R195 R199 R199 C162 C162 R200 R200 1 2 3 Q18 Q18 R197 R197 ViewSonic Corporation Confidential Do Not Copy VE920m 1_VE920mb 1 ...

Page 72: ...15 AD2 P6 2 HLFHI 16 P1 0 17 P1 1 18 P3 2 INT0 19 P1 2 20 P1 3 21 P1 4 22 P1 5 23 P1 6 24 P1 7 25 AD1 P6 1 26 AD0 P6 0 27 HSDA P3 1 TX 28 HSCL P3 0 RX 29 DA10 P6 4 30 DA11 P6 5 31 DA13 P6 7 33 DA6 P5 6 34 DA7 HCLAMP 35 VBLANK P4 0 36 HBLANK P4 1 37 HALFV DA9 38 HLFHO DA8 39 DA5 P5 5 40 DA4 P5 4 41 DA3 P5 3 42 HSYNC 43 VSYNC 44 DA12 P6 6 32 U3 U3 R47 R47 1 2 ZDP7 ZDP7 C49 C49 C48 C48 C171 C171 R43 ...

Page 73: ...UD_R1 AUD_R1 1 3 2 Q16 Q16 R179 R179 J1 J1 4 5 3 6 2 7 1 8 LP9 LP9 L21 L21 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 CN3 CN3 R182 R182 1 3 2 Q17 Q17 R214 R214 R53 R53 L20 L20 R217 R217 C167 C167 L22 L22 4 5 3 6 2 7 1 8 LP10 LP10 L23 L23 R181 R181 C170 C170 4 5 3 6 2 7 1 8 LP11 LP11 C168 C168 C169 C169 R54 R54 4 5 3 6 2 7 1 8 RP47 RP47 1 AUD_G1 AUD_G1 1 3 2 Q15 Q15 4 5 3 6 2 7 1 8 CP...

Page 74: ...OWER GND_POWER GND_POWER GND_POWER GND_POWER GND_POWER GND_POWER GND_POWER 3 STEP C53 C53 1 OE1 OE1 1 GVON1 GVON1 R58 R58 1 STV1 STV1 1 POL1 POL1 C59 C59 1 P_VGH1 P_VGH1 1 ESTH1 ESTH1 L11 L11 C58 C58 A_G 2 A_D 6 B_G 5 B_S 4 A_S 1 B_D 3 Q9 Q9 C52 C52 1 VSD1 VSD1 R59 R59 C56 C56 R57 R57 1 2 R60 R60 OUT 1 VDD 2 VSS 3 NC 4 CD 5 U5 U5 L9 L9 1 VSA1 VSA1 1 STB1 STB1 R55 R55 L13 L13 1 1 2 2 3 3 4 4 5 5 6 ...

Page 75: ... C78 R70 R70 GND 1 VOUT 2 VIN 3 VOUT 4 U10 U10 1 3 2 QP19 QP19 R205 R205 R105 R105 R66 R66 GND 1 VOUT 2 VIN 3 VOUT 4 U8 U8 R92 R92 R86 R86 R96 R96 L15 L15 1 GMA8 GMA8 C93 C93 C115 C115 1 GMA11 GMA11 C91 C91 C111 C111 R102 R102 1 GMA1 GMA1 1 2 D20 D20 1 3 2 Q10 Q10 R64 R64 R106 R106 C92 C92 L17 L17 1 GMA9 GMA9 R74 R74 R76 R76 1 VPREF1 VPREF1 1 VCM1 VCM1 1 GMA5 GMA5 R83 R83 GND 1 VOUT 2 VIN 3 VOUT 4...

Page 76: ...20 Q20 C2 C2 R138 R138 C13 C13 C20 C20 C8 C8 C15 C15 L3 L3 L4 L4 R188 R188 C28 C28 C1 C1 C6 C6 RIN0 63 GIN0 60 SOGIN0 61 BIN0 58 RIN0M 62 GIN0M 59 BIN0M 57 HSYNC0 37 VSYNC0 38 R 40 R 41 G 43 G 44 B 46 B 47 CK 49 CK 50 REXT 52 REFP 66 REFM 67 ALE CSZ 69 WRZ SDA 70 RDZ SCL 71 HWRESETZ 32 INT 72 PWM0 73 PWM1 74 NC 106 NC 107 AVDD 55 AVDD_MPLL 35 AVDD_DVI 45 BYPASS 3 AVDD_DVI 51 VDDP 11 VDDP 21 VDDP 8...

Page 77: ...24 1 3 2 D25 D25 C159 C159 R136 R136 R137 R137 R119 R119 R121 R121 C118 C118 1 2 D28 D28 C125 C125 R131 R131 1 2 3 D31 D31 R135 R135 R125 R125 C122 C122 R111 R111 R112 R112 R134 R134 R123 R123 C158 C158 C129 C129 R130 R130 D22 D22 R109 R109 1 2 D29 D29 1 2 D30 D30 R128 R128 C126 C126 C121 C121 R113 R113 TP 1 VSYNC1 VSYNC1 C117 C117 C116 C116 1 3 2 D26 D26 R124 R124 C123 C123 R122 R122 R110 R110 R1...

Page 78: ...11 PCB Layout Diagrams 75 Model Title Date Rev ViewSonic Corporation ViewSonic Corporation Confidential Do Not Copy VE920m 1_VE920mb 1 TOP ...

Page 79: ...76 Model Title Date Rev ViewSonic Corporation ViewSonic Corporation Confidential Do Not Copy VE920m 1_VE920mb 1 BOT ...

Page 80: ...77 Model Title Date Rev ViewSonic Corporation ViewSonic Corporation Confidential Do Not Copy VE920m 1_VE920mb 1 TMSK ...

Page 81: ...78 Model Title Date Rev ViewSonic Corporation ViewSonic Corporation Confidential Do Not Copy VE920m 1_VE920mb 1 BMSK ...

Page 82: ...79 Model Title Date Rev ViewSonic Corporation ViewSonic Corporation Confidential Do Not Copy VE920m 1_VE920mb 1 TPATE ...

Page 83: ...80 Model Title Date Rev ViewSonic Corporation ViewSonic Corporation Confidential Do Not Copy VE920m 1_VE920mb 1 TSLK ...

Page 84: ...81 Model Title Date Rev ViewSonic Corporation ViewSonic Corporation Confidential Do Not Copy VE920m 1_VE920mb 1 DRL ...

Page 85: ...ow Chart 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 Good Fair Bad 1 Service Manual Content 2 Service Manual Layout 3 The form and listing C Do you have any other opinions or suggestions regarding this service manual Reader s basic dada Name Title ...

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