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.
Specification 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 VA702-1_VA702b-1 Confidential - Do Not Copy...
Keep wires away from high voltage, high temperature components and sharp edges. Keep wires in their original position so as to reduce interference. Adjustment of this product please refers to the user’ manual. ViewSonic Corporation VA702-1_VA702b-1 Confidential - Do Not Copy...
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Do not touch the surface of the that may cause "Mura". polarizer. Taking out the monitor by grasping the LCD panel. Take out the monitor with cushions. That may cause "Mura". ViewSonic Corporation VA702-1_VA702b-1 Confidential - Do Not Copy...
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Placing the monitor on foreign objects, That could Place the monitor on a clean and soft foam pad. scratch the surface of the panel or cause "Mura". The panel is placed facedown on the lap. That may cause "Mura". ViewSonic Corporation VA702-1_VA702b-1 Confidential - Do Not Copy...
UL, cUL, FCC-B, CB, CE, ENERGY, NOM, TUV/GS, TUV ERGO (covers ISO13406-2 & MPRII), TCO’03, GOST-R+20 ORIGINAL Regulation COPIES HYGIENIC, SASO, PCBC, VCCI, BSMI, CCC, (PSB), (C- TICK), TUV-S, Green Mark, Energy Star, RoHS, WEEE ViewSonic Corporation VA702-1_VA702b-1 Confidential - Do Not Copy...
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640 x 350, 640 x 480, 720 x 400 (640 x Resolution Compatibility 400*), 800 x 600, 832 x 624, 1024 x 768, 1152 x 870, 1280 x 720, 1280 x 1024 Exclusions Not compatible with interlaced video ViewSonic Corporation VA702-1_VA702b-1 Confidential - Do Not Copy...
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Color = Black Power Saving Operation(Method) VESA DPMS Signaling On Mode < 36 W (max) / 35 W(typ) Power Consumption Off Mode< 1W Recovery Time On Mode = N/A, Active Off < 3 sec ViewSonic Corporation VA702-1_VA702b-1 Confidential - Do Not Copy...
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● Under DOS mode (640 x 350, 720 x 400 & 640 x 400), it should recall factory setting when execute “Auto Image Adjust”. ● The monitor needs to do “Auto Image Adjust” the first time when a new mode is detected. (See section “0-Touch™ Function Actions”) ViewSonic Corporation VA702-1_VA702b-1 Confidential - Do Not Copy...
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Minimum: 150º Response Time 12 ms (Tr= 3 ms, Tf = 9 ms) (typ) 10%-90% @ Ta=25°C 16 ms (Tr= 5 ms, Tf = 11 ms)(max) Panel Defects Please see Panel Quality Specifications. ViewSonic Corporation VA702-1_VA702b-1 Confidential - Do Not Copy...
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155º Response Time 8 ms (Tr= 2 ms, Tf = 6 ms) (typ) 10%-90% @ Ta=25°C 18 ms (Tr= 7 ms, Tf = 11 ms)(max) Panel Defects Please see Panel Quality Specifications. ViewSonic Corporation VA702-1_VA702b-1 Confidential - Do Not Copy...
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155º Response Time 8 ms (Tr= 2 ms, Tf = 6 ms) (typ) 10%-90% @ Ta=25°C 16 ms (Tr= 6 ms, Tf = 10 ms)(max) Panel Defects Please see Panel Quality Specifications. ViewSonic Corporation VA702-1_VA702b-1 Confidential - Do Not Copy...
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Wx= 0.335 +/- 0.02 CCT (Max) = 5915K Wy= 0.350 +/- 0.02 CCT (Min) = 4935K Preset Color Temperature Each color preset shall be adjustable. Red, Green, Adjustability and Blue shall be individually controlled. ViewSonic Corporation VA702-1_VA702b-1 Confidential - Do Not Copy...
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ViewSonic The reference for the bezel is the black color (VA702) and the midnight gray color (VA702b) chip provided by ViewSonic. Neck, Base, and Rear Cover Color The color difference between any two cabinet components shall be less than 0.80 “Delta E”, in the 1976 CIE L*a*b Colorspace.
Image Adjust. Scrolls through menu options and adjusts the Displays the displayed control. Main Menu or Also a shortcut to exits the display the control screen Contrast and saves adjustment control adjustments. screen. ViewSonic Corporation VA702-1_VA702b-1 Confidential - Do Not Copy...
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• If necessary, make small adjustments using H. POSITION and V. POSITION until the screen image is completely visible. (The black border around the edge of the screen should barely touch the illuminated “active area” of the LCD display.) ViewSonic Corporation VA702-1_VA702b-1 Confidential - Do Not Copy...
9300K - Adds blue to the screen image for cooler white (used in most office settings with fluorescent lighting). 6500K - Adds red to the screen image for warmer white and richer red. 5400K - Adds green to the screen image for a darker color. ViewSonic Corporation VA702-1_VA702b-1 Confidential - Do Not Copy...
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3. When all color adjustments are complete, press button [1] twice. Information displays the timing mode (video signal input) coming from the graphics card in the computer, the LCD model number, the serial number, and the ViewSonic website URL. See your graphics card’s user guide for ®...
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OSD Background allows the user to turn the OSD background On or Off. Memory Recall returns the adjustments back to factory settings if the display is operating in a factory Preset Timing Mode listed in the Specifications of this manual. ViewSonic Corporation VA702-1_VA702b-1 Confidential - Do Not Copy...
Q802, R827, R828 and ZD801 make up of dummy loading circuit. For start-up sequence, during 5V output take place high loading first, this dummy loading circuit operated to insure 14V not be increased. ViewSonic Corporation VA702-1_VA702b-1 Confidential - Do Not Copy...
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U104 #30-#32, #69-#72, #77-#78 are the communications with U105 (MCU) that are connected to #36-#43 of MCU. These communications include HWRESET, CSZ/ALE, SCL/RDZ, SDA/WRZ, and AD0-AD3. ViewSonic Corporation VA702-1_VA702b-1 Confidential - Do Not Copy...
6.1 CN501, CN502, CN503, CN504 (Connect to Panel Backlight, SM02B-BHSS-1-TB or equivalent) Symbol Description H.V. High voltage for lamp L.V. Low voltage for lamp 6.2 CN101 (Power BD to Interface BD) Symbol Description +5V (VCC5V) +5.2V output Ground ViewSonic Corporation VA702-1_VA702b-1 Confidential - Do Not Copy...
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Power supply (5.0 V) 6.5 CN102 (D-SUB Connector) Symbol Symbol Symbol Red video input Red GND Green video input Green GND Serial data (SDA) Blue video input Blue GND H / H+V SYNC ViewSonic Corporation VA702-1_VA702b-1 Confidential - Do Not Copy...
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Not connected BUSTYPE Low : Serial bus; High : Direct bus Not connected Not connected Not connected Ground VDDP Digital Output Power Not connected Not connected Not connected Not connected Not connected ViewSonic Corporation VA702-1_VA702b-1 Confidential - Do Not Copy...
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DDR direct bus WRZ; active low RDZ/SCL DDR direct bus RDZ; active low CPU interrupt; 4mA driving strength PWM0; 4mA driving strength PWM0 PWM1; 4mA driving strength PWM1 Not connected Not connected ViewSonic Corporation VA702-1_VA702b-1 Confidential - Do Not Copy...
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B-Link Negative LVDS Differential Clock LVBCKM LVB2P B-Link Positive LVDS Differential Data B-Link Negative LVDS Differential Data LVB2M B-Link Positive LVDS Differential Data LVB1P B-Link Negative LVDS Differential Data LVB1M VDDP Digital Output Power ViewSonic Corporation VA702-1_VA702b-1 Confidential - Do Not Copy...
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DDR Direct Bus Communication with Scaler P0.3/AD3 WRZ line of DDR Direct Bus P0.2/AD2 RDZ line of DDR Direct Bus P0.1/AD1 ALE line of DDR Direct Bus P0.0/AD0 Hardware reset to Scaler +5V for MCU working voltage VA702-1_VA702b-1 ViewSonic Corporation Confidential - Do Not Copy...
Red (+ / -) User Color Green (+ / -) Blue (+ / -) Information Manual Image Adjust H Position (+ / -) H/V Position V Position (+ / -) H Size + / - ViewSonic Corporation VA702-1_VA702b-1 Confidential - Do Not Copy...
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[1] + [▼] 10S(again) Lock NOTICE: Status bar indicating Power Button lock or unlock is in progress and when complete it will indicate “Power Button Locked” Power should only be lockable in the “On State” ViewSonic Corporation VA702-1_VA702b-1 Confidential - Do Not Copy...
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2. If the “EDID Rewrite” process finished, please pull out VGA cable and press ‘’2’’+’’▲’’ at the same time. 3. Pull out AC power cable or press power key to restart. ViewSonic Corporation VA702-1_VA702b-1 Confidential - Do Not Copy...
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Chroma Signal modes and power saving signal. check Generator 2. Confirm the above timing modes must be full screen and the picture must be normal. 3. LED is Orange at power saving mode. ViewSonic Corporation VA702-1_VA702b-1 Confidential - Do Not Copy...
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Contrast: Default generator and Power Check power consumption at each modes meter Power saving Power AC input: State LED color Consumption 230V/50Hz Normal Green <38W Stand By Orange <1W Power Key Off <1W ViewSonic Corporation VA702-1_VA702b-1 Confidential - Do Not Copy...
This LCM support more than 30 timing modes, if the input timing mode is out of specification, the picture may appears abnormally. If brightness uneven, repairs Inverter circuit or change a new panel. If you find the vertical line or horizontal line lost on the screen, please change panel. ViewSonic Corporation VA702-1_VA702b-1 Confidential - Do Not Copy...
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Check R801, R805, IC802 voltage R822, R823, R817 about 1V Check pin2 of IC802 Check R803, R807, voltage about 2V R824, R825 Check R812, R816, Check pin1 of IC802 C818 voltage is 5.8V ViewSonic Corporation VA702-1_VA702b-1 Confidential - Do Not Copy...
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Check R809, R814, Check reference IC801, R818 voltage of IC801 Check R810, R811 Check C815, D806, Check Vpin3-4 of Check feedback IC801 about 6V R812 circuit Check Vpin1-2 of IC801 about Check R809, R814 ViewSonic Corporation VA702-1_VA702b-1 Confidential - Do Not Copy...
Check R809, R808, R814, D809 Check pin1 of Check D806, C815 if IC802 voltage short is 5.8V Change D806, C815 Check pin3 of Change R801, R805, IC802 voltage R822, R823, R817 about 1V ViewSonic Corporation VA702-1_VA702b-1 Confidential - Do Not Copy...
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Is Ok IC501? U501, U502 fail pin1, pin3, pin15 and pin16 of IC501 at the moment of restart? IC501 fail T501, T502 fail Is ok T501, T502? Check protected circuit Q501, Q502, Q503, Q504 ViewSonic Corporation VA702-1_VA702b-1 Confidential - Do Not Copy...
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6. Black Screen and backlight turn on ViewSonic Corporation VA702-1_VA702b-1 Confidential - Do Not Copy...
LVDS Cable NG Check VLCD is 5V Check LVDS signals Panel Fail Check Panel-Enable of Check the HWRESET of Check RP101 U105(pin2) is low U104 exists Check Check the pins of Q101,Q102,Q107,R103 U105 ViewSonic Corporation VA702-1_VA702b-1 Confidential - Do Not Copy...
LVDS Cable NG 1.Check Check Crystal:pin20,21 of X101,C154,C155 U105 and pin 33,34 of U104 2.Check X102,C126,C168 Check ALE/RDZ/ Check the communication of WRZ/AD0/AD1/AD2/ U104 and U105 AD3/HWRESET Check the pins of U104 and U105 ViewSonic Corporation VA702-1_VA702b-1 Confidential - Do Not Copy...
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.
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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.
8. Exploded Diagram and Exploded Parts List ViewSonic Corporation Model Title Exploded diagram Date Rev: ViewSonic Corporation VA702-1_VA702b-1 Confidential - Do Not Copy...
3K3 1% RT801 47u/25V C824 PGND 4700P Y1 F801 2A 250V CN801 08DA-6S VCC5V BRIGHTNESS ON/OFF P801 C821 ViewSonic Corporation AC IN 0.1u/50V TO SCALER BD CN101 Model POWER SUPPLY Title Date Rev: ViewSonic Corporation VA702-1_VA702b-1 Confidential - Do Not Copy...
POWER board ViewSonic Corporation VA702-1_VA702b-1 Confidential - Do Not Copy...
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ViewSonic Corporation VA702-1_VA702b-1 Confidential - Do Not Copy...
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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 VA702-1_VA702b-1 Confidential - Do Not Copy...