ViewSonic VA903b-3 VS11372 Service Manual
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ViewSonic VA903b-3 VS11372 Service Manual

19” color tft lcd display
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Service Manual

ViewSonic VA903b-3
VA903m-3
Model No. VS11372
19" Color TFT LCD Display
(VA903b-1_ VA903m-1_SM Rev. 1a Sep. 2006)
ViewSonic 381 Brea Canyon Road, Walnut, California 91789 USA - (800) 888-8583

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Summary of Contents for ViewSonic VA903b-3 VS11372

  • Page 1: Service Manual

    Service Manual ViewSonic VA903b-3 VA903m-3 Model No. VS11372 19” Color TFT LCD Display (VA903b-1_ VA903m-1_SM Rev. 1a Sep. 2006) ViewSonic 381 Brea Canyon Road, Walnut, California 91789 USA - (800) 888-8583...

  • Page 2: Revision History

    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.

  • Page 3: Table Of Contents

    Front Panel Function Control Description Circuit Description Adjustment Procedure Troubleshooting Flow Chart Recommended Spare Parts List Exploded Diagram and Exploded Parts List Block Diagram 10. Schematic Diagrams 11. PCB Layout Diagrams ViewSonic Corporation VA903b-1_ VA903m-1 Confidential - Do Not Copy...

  • Page 4: Precautions And Safety Notices

    In case parts need to be replaced, you must use identical parts or those supplied by our certified manufacturers. Any other parts used without our authorization may result in electrical shock or fire risk. ViewSonic Corporation VA903b-1_ VA903m-1 Confidential - Do Not Copy...
  • Page 5 DO not touch the surface may cause”mura” of the POL Take out the monitor with cushions Taking out the monitor by grasping the LCD panel, that May cause”mura” ViewSonic Corporation VA903b-1_ VA903m-1 Confidential - Do Not Copy...

  • Page 6: Viewsonic Corporation

    Place the monitor on a clean and soft foam pad Placing the monitor on a foreign objects, that could scratch The surface of the "Panel" or cause "mura" The panel is placed facedown the lap,that may cause "mura" ViewSonic Corporation VA903b-1_ VA903m-1 Confidential - Do Not Copy...

  • Page 7: Specification

    Temperature (℉/℃) -4℉~140℉ / -20℃~60℃ Storage Condition Humidity (%) 5 % - 90 % UL/cUL, FCC-B,TUV-S, CB, CE, TUV/GS, TUV/ERGO, TCO03, BSMI, CCC, (PSB), (C-TICK), GOST-R/HYGIENIC, SASO, WEEE, RoHS, Regulation ENERGY STAR, ViewSonic Corporation VA903b-1_ VA903m-1 Confidential - Do Not Copy...
  • Page 8 (1.8m, Color: black) with PC 2001 Arabic, English, Finnish, Spanish, German, ViewSonic CD Wizard Italian, Swedish, Polish, Korean, Portuguese, Russian, French, Simplified Chinese, ViewSonic Quick Start Guide Traditional Chinese, Hungary, Czech, Turkish Screen Protector Mylar Hi Pot label QA pass label...
  • Page 9 A @ 90VAC, A(MAX) @ Inrush Current (Cold Start) SHALL START AND FUNCTION PROPERLY WHEN UNDER FULL LOAD, WITH ALL COMBINATIONS OF Power Supply Cold Start INPUT VOLTAGE, INPUT FREQUENCY, AND OPERATING TEMPERATURE ViewSonic Corporation VA903b-1_ VA903m-1 Confidential - Do Not Copy...
  • Page 10 640 x 480 @ 75Hz, 37.5kHz 640 x 480 @ 85Hz, 43.27kHz 720 x 400 @ 70Hz, 31.5kHz 800 x 600 @ 56Hz, 35.1kHz 800 x 600 @ 60Hz, 37.9kHz 800 x 600 @ 72Hz, 48.1kHz ViewSonic Corporation VA903b-1_ VA903m-1 Confidential - Do Not Copy...
  • Page 11 ● The monitor needs to do “Auto Image Adjust” the first time a new mode is detected (See section “0-Touch™ Function Actions”) ● The monitor needs to do “Auto Adjust” the first time a new mode is detected (See section “0-Touch™ Function Actions”) ViewSonic Corporation VA903b-1_ VA903m-1 Confidential - Do Not Copy...
  • Page 12 Response Time 8 ms (Tr= 2 ms, Tf = 6 ms) (Typ) 10%-90% @ Ta=25°C 12 ms (Tr= 4 ms, Tf = 8 ms) (max) Panel Defects Please see Panel Quality Specifications. ViewSonic Corporation VA903b-1_ VA903m-1 Confidential - Do Not Copy...
  • Page 13 (Max) CCT = 6500K Saturation Contrast = Default NO VISIBLE SATURATION Brightness = Default Test pattern = 64-gray Contrast = 100% Brightness = 100% 8~10 VISIBLE SATURATION Test pattern = 64-gray ViewSonic Corporation VA903b-1_ VA903m-1 Confidential - Do Not Copy...
  • Page 14 ● Power Supply, and Grounding Artifacts : No visible artifacts in any specified video mode within the horizontal or vertical frequency range of the monitor ● Temperature Drift : Image shall not drift or lose fine-tune adjustment ViewSonic Corporation VA903b-1_ VA903m-1 Confidential - Do Not Copy...
  • Page 15 Monitor Weight 4.2KG / 9.25lb *Refer to Figure 1 Ergonomics 0° TO 20.5°±3° Tilt Up step 1 Tilt Down From 0º down to -5º Swivel Right Swivel Left Height Adjust Pivot ViewSonic Corporation VA903b-1_ VA903m-1 Confidential - Do Not Copy...
  • Page 16 These functions are not available under Native Resolution Mode These functions setting can be recalled to default by [▼]+[▲] under audio mode [Remark] Please refer to the detail in the Appendix C ViewSonic Corporation VA903b-1_ VA903m-1 Confidential - Do Not Copy...
  • Page 17 (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 not be a separate save ViewSonic Corporation VA903b-1_ VA903m-1 Confidential - Do Not Copy...
  • Page 18 Cable type / length 3.5mm stereo cable / 1.8m length Note: There is no guarantee <1 W power Audio DPMS consumption in Active Off mode, when the Audio Cable is connected ViewSonic Corporation VA903b-1_ VA903m-1 Confidential - Do Not Copy...

  • Page 19: Circuit Description

    ADC_GND ADC ground SOG/ADC_TEST SOG in/ADC test pin GREEN+ Analog input from GREEN channel GREEN- Analog input ground from GREEN channel ADCB_VDD Analog power (3.3V) RED+ Analog input from RED channel ViewSonic Corporation VA903b-1_ VA903m-1 Confidential - Do Not Copy...
  • Page 20 TCON[2] / TCON[2] / TCON[2] / TCON[2] / PWM2 PWM2 PWM2 PWM2 PWM2 S[2] / S[2] / S[2] / S[2] S[2] / (1), (2), (3)/ TCON[3] TCON[3] TCON[3] /BBLU[1] / TCON[3] TCON[3] ViewSonic Corporation VA903b-1_ VA903m-1 Confidential - Do Not Copy...

  • Page 21: Table Of Contents

    AGRN [5]/T24 AGRN [5] AG2N TCON [10] AGRN [4]/T25 AGRN [4] AG1P TCON [9] AGRN [3]/T26 AGRN [3] AG1N TCON [8] AGRN [2]/T27 AGRN [2] AR3P TCON [7] ARED [7]/T28 ARED [7] ViewSonic Corporation VA903b-1_ VA903m-1 Confidential - Do Not Copy...
  • Page 22 Power-on-latch for serial / parallel port TMDS_GND TMDS_VDD (3.3V) EXT_RES Impedance Match Reference. TMDS_VDD (3.3V) RX2P Differential Data Input RX2N Differential Data Input TMDS_GND RX1P Differential Data Input RX1N Differential Data Input ViewSonic Corporation VA903b-1_ VA903m-1 Confidential - Do Not Copy...
  • Page 23 (1), (2), (3), (5), (6), TCON [7] /PWM1 / TCON [7] / PWM1 (8)/ 8mA /no slew Power & Ground: 22 pins Name Pin No Description 3.3V Power 49,121 VCCIO: 2 ViewSonic Corporation VA903b-1_ VA903m-1 Confidential - Do Not Copy...
  • Page 24 The inverter is formed by symmetric in order to drive the separate lamp modules. The input stage consists of a PWM controller, push-pull inverter, and switching MOSFET to convert DC input into ViewSonic Corporation VA903b-1_ VA903m-1 Confidential - Do Not Copy...
  • Page 25 There are two signals which control the inverter come from system to turn on the inverter and control brightness. Logic “low” level which send to U901 is turn on the inverter. BL-ADJ signal control brightness by DC level which was integral from PWM signal. ViewSonic Corporation VA903b-1_ VA903m-1 Confidential - Do Not Copy...

  • Page 26: Adjusting Procedure

    *2. Any timing not in the list, it should display as normal or show on “OUT OF RANGE” OSD message without blanking. *3. The image quality of 85Hz mode might be worse than 75Hz. ViewSonic Corporation VA903b-1_ VA903m-1 Confidential - Do Not Copy...
  • Page 27 ViewSonic Corporation VA903b-1_ VA903m-1 Confidential - Do Not Copy...
  • Page 28 ViewSonic Corporation VA903b-1_ VA903m-1 Confidential - Do Not Copy...

  • Page 29: Firmware Update Procedure

    Below form appear the relation between the method and the MCU-RSIC type METHOD ASIC JUMPER MYSON M-STAR & NOVATEK PIN2-3 CLOSED OTHER REALTEK PIN1-2 CLOSED LPT PORT TEST PC Fixture ISP_CORD Fixture POWER_ADAPTER ViewSonic Corporation VA903b-1_ VA903m-1 Confidential - Do Not Copy...
  • Page 30 Plug AC cable in power adapter AC jack 2.2.6 Connect power adapter DC_OUTPUT port to main board DC_IN port 2.2.7 Connect PO3 of ISP fixture with VGA port of monitor’s main board by VGA cable ViewSonic Corporation VA903b-1_ VA903m-1 Confidential - Do Not Copy...
  • Page 31 PO1 to LPT cable jumper PO3 to VGA cable AC JACK DC_IN port VGA port NOTE: Do STEP2.2.6 and STEP2.2.7 for monitor’s main board only. Monitor firmware upgrade will jump this step. ViewSonic Corporation VA903b-1_ VA903m-1 Confidential - Do Not Copy...
  • Page 32 2.3. Soft install Install ISP3.0 program by selecting and clicking “…\isp3.0\setup.exe”, press “YES” or “NEXT” buttons until setup is complete. ViewSonic Corporation VA903b-1_ VA903m-1 Confidential - Do Not Copy...
  • Page 33 ViewSonic Corporation VA903b-1_ VA903m-1 Confidential - Do Not Copy...
  • Page 34 ViewSonic Corporation VA903b-1_ VA903m-1 Confidential - Do Not Copy...
  • Page 35 Installation will create a icon for ISP application in “START MENU”\PROGRAM Press “finish” button exit setup ViewSonic Corporation VA903b-1_ VA903m-1 Confidential - Do Not Copy...
  • Page 36 DCC written fixture ,check whether the connection between main board is in well condition ,see attached file 1.1&1.2 per the product model ,choose the corresponding Model, DCC written process, the model mr171-AAA should apply the SIP Program ViewSonic Corporation VA903b-1_ VA903m-1 Confidential - Do Not Copy...
  • Page 37 STEP2: Creat security file Choose the Tab "create Security File " to enter next Dialogue Item ViewSonic Corporation VA903b-1_ VA903m-1 Confidential - Do Not Copy...
  • Page 38 STEP3: Input the related parameter, save them and take up the next step STEP4: Choose the Tab MTV TYPE Choose the MTV512M64 from the TAB ISP ITEMS DCC Written model Diagram Table as below ViewSonic Corporation VA903b-1_ VA903m-1 Confidential - Do Not Copy...
  • Page 39 STEP5: DCC WRITTEN methods ViewSonic Corporation VA903b-1_ VA903m-1 Confidential - Do Not Copy...
  • Page 40 Choose the Tab LOAD MCU FILE，Looking up the related BIOS document in my Computer ,and Point the confirm Tab when the BIOS Documents' loading is successful ,you can find the picture as above ViewSonic Corporation VA903b-1_ VA903m-1 Confidential - Do Not Copy...
  • Page 41 If showed the picture as above pls check whether the DDC write fixture is well Connected with PC the power board is power on and the program's setup is all right ViewSonic Corporation VA903b-1_ VA903m-1 Confidential - Do Not Copy...
  • Page 42 The normal program is writing The program has finished writing ViewSonic Corporation VA903b-1_ VA903m-1 Confidential - Do Not Copy...

  • Page 43: Disassembly Procedure

    Disassembly Procedure 1. Remove the hinge cover 2. Unscrew the back cover’s screw 3. open the back cover ,pull out the speaker wire ViewSonic Corporation VA903b-1_ VA903m-1 Confidential - Do Not Copy...
  • Page 44 Tear off the aluminum foil where cover the FFC cable,take out the key board from bezel ,pull out FFC cable from the main board; 6. pull out the two pcs screw form the main board ViewSonic Corporation VA903b-1_ VA903m-1 Confidential - Do Not Copy...
  • Page 45 7. pull out the two screws where lie in the two sides of the frame 8. pull out the screws which fix up the bezel and then take out the bezel 9. Take out the screw which covers the shield ViewSonic Corporation VA903b-1_ VA903m-1 Confidential - Do Not Copy...
  • Page 46 11. take out the screw form the power board ,pull out the power boards’ connecter wire 12. take out the FCC Cable AL where lies in the panel ,pull out the FCC cable ViewSonic Corporation VA903b-1_ VA903m-1 Confidential - Do Not Copy...
  • Page 47 13. take out the main board’s screw 14. Remove the fame down towards ViewSonic Corporation VA903b-1_ VA903m-1 Confidential - Do Not Copy...
  • Page 48 1.1 Paste production film to protect the monitor screen.(Figure 1) tape Production film 1.2 Put the monitor in the PE bag and seal bag with type (Figure 2) tape 1.3 Put the cushions on the monitor.(Figure 4) ViewSonic Corporation VA903b-1_ VA903m-1 Confidential - Do Not Copy...
  • Page 49 1.4 Put the base in the EPE bag. and then,place the base on the cushions ,as figure; 1.4.Place the monitor into the carton and then put all accessories into carton .At last,close the carton. Use ‘s Guide Power cord Base signal cord ViewSonic Corporation VA903b-1_ VA903m-1 Confidential - Do Not Copy...

  • Page 50: Troubleshooting Flow Chart

    6. Troubleshooting Flow Chart Main Procedure Start Connect all of devices to the LCD monitor Power On A. Power Circuit Is indicator LED Troubleshooting light? ViewSonic Corporation VA903b-1_ VA903m-1 Confidential - Do Not Copy...
  • Page 51 B. Backlight Is backlight on? Troubleshooting C. Performance Display Performance Troubleshooting O.K.? D. Function Function Adjustment Troubleshooting O.K.? E. Audio Audio Function O.K.? Troubleshooting No Trouble Found ViewSonic Corporation VA903b-1_ VA903m-1 Confidential - Do Not Copy...
  • Page 52 A. Power Circuit Troubleshooting Start Change AC/ DC Adapter Retry Power Change Main Board & Retry No Trouble Found ViewSonic Corporation VA903b-1_ VA903m-1 Confidential - Do Not Copy...
  • Page 53 B. Backlight Troubleshooting Start Change Inverter and Retry Change Main Board& Retry Backlight Change Module No Trouble Found ViewSonic Corporation VA903b-1_ VA903m-1 Confidential - Do Not Copy...
  • Page 54 Screen is Change Change Main Change LCD flickering? Inverter Board Board Module Change LCD LCD Line Defect? Module Change LCD Bad Uniformity? Module Check Change Main Is screen white? Connector Board ViewSonic Corporation VA903b-1_ VA903m-1 Confidential - Do Not Copy...
  • Page 55 Screen with noise or line Prss Reset Button from bar? front panel control Change Main Board Make sure relution is set Screen is smaller? at default Reset O.K.? Change Main Board No Trouble Found ViewSonic Corporation VA903b-1_ VA903m-1 Confidential - Do Not Copy...
  • Page 56 D. Function Troubleshooting Start Change Control Menu not Control Board Functioning? and Retry? Change Main Board No Trouble Found ViewSonic Corporation VA903b-1_ VA903m-1 Confidential - Do Not Copy...
  • Page 57 E. Audio Troubleshooting Start Make sure sound output, Audio cable is OK. Change No Sound Speaker Change Sound is broken? Speaker Volume Change Main Unadjustable? Board No Trouble Found ViewSonic Corporation VA903b-1_ VA903m-1 Confidential - Do Not Copy...

  • Page 58: Recommended Spare Parts List

    Remark 1: Above listed items are examples, supplier can expand the rows to add more necessary items. Remark 2: All revised RSPLs with newly added items or any change made should be highlighted and correlated with the ECN/ECR approved by ViewSonic Corporation. This is to eliminate repeated cross checks of each item between this version and prior versions.
  • Page 59 F0004191AK001 viewsonic REV:0 base attachment procedure LM/MR17I-AAA ENGLISH L190*W127mm for F0010171A3001 viewsonic VA703 REV:0 F001217043001 Explanation card LM/LM1704 ENGLISH L210*W148mm for Viewsonic REV:0 F101415170401 MARK LM/LM1704 L11*W11mm energy star F102506191A04 Safety Label LM/MR19I-AAA L89.5*W49.5mm for viewsonic (VA903m) REV:1 F103015170401 Blank Label LM/LM1704 L50*W25mm...
  • Page 60 Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty C4022296M2122 CAP EC -40℃~105℃ 2.2uF/25V ±20%(M) ψ4*H5mm P=2.0mm (DIP) C02410302K111 CAP MLCC X7R 10nF/25V±10%(K) 0603TAPPING (SMD) C02410403K111 CAP MLCC X7R 0.1UF/50V ±10%(K) 0603 TAPPING(SMD) C02447302K111 CAP MLCC/ X7R 0.047uF /25V ±10%(K) 0603 TAPPING(SMD) C02447401K111 CAP MLCC X7R 470nf 16V ±10%(K) 0603 TAPING lead free (SMD)
  • Page 61 POLYETHYLENE-R EPS LM/MR19I-AAA L155*W155*H483mm F300250000047 BAG /PE L550*W480*T0.03mm transparent F300272501501 PLASTIC BAG LDPE L250*W150*T0.08mm F4007K4191A01 carton K4K C LM/MR19I-AA L485*W163*H503mm for viewsonic VA903b REV:1 F401422LM0001 PARTITION SUPPORT BC LM/MONITOR series L800*W50*H50*T5mm 0.035 F401422LM0003 PARTITION SUPPORT BC LM/MONITOR series L2000*W50*H50*T5mm 0.071 F401918191A01 PAPER COVER C LM/MR19I-AAA L1147*W981*H60mm(內尺寸)
  • Page 62 Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty BEAD Chip Beads DDY160808U011MB 10Ω 200mA 0603(1608) TAPING MAGIC L004100201101 LEAD FREE (SMD) CHIP BEAD Ferrite ChipBeads (high current) WB201209B601QLT02 120Ω 3000mA 1206 L013121302A11 Walsin (SMD) Q441240047151 CRYSTAL QUARTZ/ 24MHZ 30PPM 20PF 49US CRE (DIP) R070000J10311 RES CHIP 0Ω...

  • Page 63: Exploded Diagram And Exploded Parts List

    8. Exploded Diagram and Exploded Parts List ViewSonic Corporation VA903b-1_ VA903m-1 Confidential - Do Not Copy...
  • Page 64 M621700LM0390-G Bracket SECC LM/MR19I-AAA REV:0 B-00006501 XLM191A040002 MAIN BOARD ASSY LM/MR19I-AA POWER BOARD+INVERTER BOARD ASSY PI-SB03 24V+5V LM/17''/19'' B-00006503 XLM1700390010 LCD MONITOR FOR VIEWSONIC M105244006401 MECHENICAL SCREW WITH NI P369579010001 MYLAR L95*W79.5*T0.1mm WHITH ADHESIVE M711200LM0130-A Shield SPTE LM/MR17I-AAA REV: P612012010001 RUBBER FOOT ROUND Φ12*T2mm BLACK...
  • Page 65 M621700LM0390-G Bracket SECC LM/MR19I-AAA REV:0 B-00006501 XLM191A040002 MAIN BOARD ASSY LM/MR19I-AA POWER BOARD+INVERTER BOARD ASSY PI-SB03 24V+5V LM/17''/19'' B-00006503 XLM1700390010 LCD MONITOR FOR VIEWSONIC M105244006401 MECHENICAL SCREW WITH NI P369579010001 MYLAR L95*W79.5*T0.1mm WHITH ADHESIVE M711200LM0130-A Shield SPTE LM/MR17I-AAA REV: P612012010001 RUBBER FOOT ROUND Φ12*T2mm BLACK...
  • Page 66 PACKING FOR SHIPPING ViewSonic Corporation VA903b-1_ VA903m-1 Confidential - Do Not Copy...
  • Page 67 AC POWER CORD US Spec 22AWG L150cm BLACK CB-00005758 W0026918A0142 AUDIO CABIE 26AWG UL2547 L=1800mm 6C BLACK W0926417AQ951 VGA CABLE 30AWG UL20276 L1800mm 15PIN Black CD Manual LM/MR17I-AA VIEWSONIC VA703b INNOLUX F801190000017 REV:0 F300272501501 PLASTIC BAG LDPE L250*W150*T0.08mm Monitor Head Only...
  • Page 68 AC POWER CORD US Spec 22AWG L150cm BLACK CB-00005758 W0026918A0142 AUDIO CABIE 26AWG UL2547 L=1800mm 6C BLACK W0926417AQ951 VGA CABLE 30AWG UL20276 L1800mm 15PIN Black CD Manual LM/MR17I-AA VIEWSONIC VA703b F801190000017 INNOLUX REV:0 F300272501501 PLASTIC BAG LDPE L250*W150*T0.08mm Monitor Head Only...

  • Page 69: Block Diagram

    9. Block Diagram ViewSonic Corporation VA903b-1_ VA903m-1 Confidential - Do Not Copy...

  • Page 70: Schematic Diagrams

    R126 1K VBRI MCU_VCC KST3904 DGND LED2 5DVCC 2N3906 LED-2 2N3906 4.7K LED1 R15 NC BKLT-EN LED-1 ViewSonic Corporation R127 1K INVON 100nF 47uF_16V/NC 10K/NC KST3904 Model DGND Title Date Rev: ViewSonic Corporation VA903b-1_ VA903m-1 Confidential - Do Not Copy...
  • Page 71 MENU MUTE EXIT DOWN DOWN EXIT MUTE MENU DGND POWER LED-2 HEADER 13/SM HEADER 13/SM LED-1 HEADER 13/SM LED1 ViewSonic Corporation Model Title Date Rev: ViewSonic Corporation VA903b-1_ VA903m-1 Confidential - Do Not Copy...
  • Page 72 FBA5 BED/6 NC/0.1uF PHONEJACK 5P APA2065 CA10 NC/180PF FBA4 NC/180PF BED/6 NC/1R2 CNA3 AGND AGND AGND AGND AGND FBA10 BED/6 2PIN 2.0mm180" CA12 2.2uF_16V AGND ViewSonic Corporation Model Title Date Rev: ViewSonic Corporation VA903b-1_ VA903m-1 Confidential - Do Not Copy...
  • Page 73 DDC1_SDA HDA1/TX/P3.1 P6.0/AD0 R149 100 DDC1_SCL HCL1/RX/P3.0 MTV512 24MHz 472_4 R151 R150 R152 6.8K 472_4 MCU_VCC C125 C126 10pF 10pF ViewSonic Corporation 5DVCC Closed to MCU MCU_VCC Model Title Date Rev: ViewSonic Corporation VA903b-1_ VA903m-1 Confidential - Do Not Copy...
  • Page 74 RXCN R135 RXCN clk- SHELL2 C112 C111 NC/10pF NC/10pF JACK MLL5232B 5.6V BAV99 BAV99 BAV99 BAV99 BAV99 BAV99 BAV99 BAV99 ViewSonic Corporation C113 C114 C115 C117 C118 C119 C116 C120 100nF 100nF 100nF 3.3DVCC 100nF 100nF 100nF 100nF 100nF Model...
  • Page 75 BG2P / TXE3+ AHS0 RTD_SCLK AHS0 AHS1 / V0 AVS0 NC/1K AVS0 AVS1 / VCLK R3.3DVCC R1.8DVCC 2N3906 DDC1_SCL DDCSCL1 DDC1_SDA DDCSDA1 2N3906 100nF 100uF_16V ViewSonic Corporation Model SCALER Title Date Rev: ViewSonic Corporation VA903b-1_ VA903m-1 Confidential - Do Not Copy...

  • Page 76: Pcb Layout Diagrams

    11. PCB Layout Diagrams ViewSonic Corporation Model Title Date Rev: ViewSonic Corporation VA903b-1_ VA903m-1 Confidential - Do Not Copy...
  • Page 77 ViewSonic Corporation Model Title BOTTOM Date Rev: ViewSonic Corporation VA903b-1_ VA903m-1 Confidential - Do Not Copy...
  • Page 78 ViewSonic Corporation Model Title DRILL DRAWING Date Rev: ViewSonic Corporation VA903b-1_ VA903m-1 Confidential - Do Not Copy...
  • Page 79 ViewSonic Corporation Model Title MASK-TOP Date Rev: ViewSonic Corporation VA903b-1_ VA903m-1 Confidential - Do Not Copy...
  • Page 80 ViewSonic Corporation Model Title MASK-BOTTOM Date Rev: ViewSonic Corporation VA903b-1_ VA903m-1 Confidential - Do Not Copy...
  • Page 81 ViewSonic Corporation Model Title SMD-TOP Date Rev: ViewSonic Corporation VA903b-1_ VA903m-1 Confidential - Do Not Copy...
  • Page 82 ViewSonic Corporation Model Title SILKSCREEN-BOTTOM Date Rev: ViewSonic Corporation VA903b-1_ VA903m-1 Confidential - Do Not Copy...
  • Page 83 ViewSonic Corporation Model Title SILKSCREEN-TOP Date Rev: ViewSonic Corporation VA903b-1_ VA903m-1 Confidential - Do Not Copy...

  • Page 84: Front Panel Function Control Description

    Company: Add: Tel: Fax: E-mail: After completing this form, please return it to ViewSonic Quality Assurance in the USA at facsimile 1-909-839-7943. You may also e-mail any suggestions to the Director, Quality Systems & Processes (marc.maupin@viewsonic.com) ViewSonic Corporation VA903b-1_ VA903m-1...

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