Service Manual
Page 8
...L801 is from shock. C801 and C806 are used to clear up sequence, during normal operation. D806 and C815 provide internal Auxiliary current to CONTROL pin during 5V output take place high loading first, this can change , this dummy loading circuit operated to insure 14V not be increased. ...value close to the maximum value over voltage shut-down (OVP) and line under large current impulse and voltage spike. For BURST MODE, its ViewSonic Corporation Confidential - Do Not Copy VA902/b 5 For 5VDC output OVP, ZD803 is a zener diode, when 5V output voltage becomes up to filter...
...L801 is from shock. C801 and C806 are used to clear up sequence, during normal operation. D806 and C815 provide internal Auxiliary current to CONTROL pin during 5V output take place high loading first, this can change , this dummy loading circuit operated to insure 14V not be increased. ...value close to the maximum value over voltage shut-down (OVP) and line under large current impulse and voltage spike. For BURST MODE, its ViewSonic Corporation Confidential - Do Not Copy VA902/b 5 For 5VDC output OVP, ZD803 is a zener diode, when 5V output voltage becomes up to filter...
Service Manual
Page 9
... /O port is high, Q103 is high level, and make the voltage of 8 bit to panel control circuit through R506, R507, and C508 connected to full-bridge switches. 2.2.2 Protection circuit Over Voltage Protection...data, which is a kind of memory and used for U104. 2.3.2 MCU (W78E65P) VDD is 22.1184MHz. ViewSonic Corporation Confidential - If no current is normal operation. These communications include HWRESET, CSZ/ALE, SCL/RDZ, SDA/WRZ..., the divided AC voltage is determined by Monitor self via a current amplifier, resulting in PWM of MCU. The feedback voltage through CN103.
... /O port is high, Q103 is high level, and make the voltage of 8 bit to panel control circuit through R506, R507, and C508 connected to full-bridge switches. 2.2.2 Protection circuit Over Voltage Protection...data, which is a kind of memory and used for U104. 2.3.2 MCU (W78E65P) VDD is 22.1184MHz. ViewSonic Corporation Confidential - If no current is normal operation. These communications include HWRESET, CSZ/ALE, SCL/RDZ, SDA/WRZ..., the divided AC voltage is determined by Monitor self via a current amplifier, resulting in PWM of MCU. The feedback voltage through CN103.
Service Manual
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... lamp Low voltage for lamp 6.2 CN101 (Power BD to decrease 6 LED_GREEN Green LED lighting control 7 GND 8 LED_ORANGE Ground Orange LED lighting control ViewSonic Corporation Confidential - Symbol Description 1 KEY_SELECT/AUTO Select control and auto adjustment control 2 KEY_MENU/EXIT OSD page selection and exit 3 KEY_UP OSD "▲" control to adjust value to increase 4 KEY_POWER DC power on /off...
... lamp Low voltage for lamp 6.2 CN101 (Power BD to decrease 6 LED_GREEN Green LED lighting control 7 GND 8 LED_ORANGE Ground Orange LED lighting control ViewSonic Corporation Confidential - Symbol Description 1 KEY_SELECT/AUTO Select control and auto adjustment control 2 KEY_MENU/EXIT OSD page selection and exit 3 KEY_UP OSD "▲" control to adjust value to increase 4 KEY_POWER DC power on /off...
Service Manual
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... 11 VDDP 12 NC 13 NC 14 NC 15 NC 16 NC 17 NC 18 VDDC 19 GND I Digital Core Power Ground ViewSonic Corporation Confidential - Key Parts Pin Assignment 7.1 IC802 (TOP246Y, Power Control IC) Pin Symbol I/O Description 1 C I Control 2 L I Line Sense 3 X I External Current Limit 4 S O Source of MOSFET(GND) 5 F I Frequency 6 D I Drain of set LPWM frequency 7 ADJ...
... 11 VDDP 12 NC 13 NC 14 NC 15 NC 16 NC 17 NC 18 VDDC 19 GND I Digital Core Power Ground ViewSonic Corporation Confidential - Key Parts Pin Assignment 7.1 IC802 (TOP246Y, Power Control IC) Pin Symbol I/O Description 1 C I Control 2 L I Line Sense 3 X I External Current Limit 4 S O Source of MOSFET(GND) 5 F I Frequency 6 D I Drain of set LPWM frequency 7 ADJ...
Service Manual
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...with EEPROM SDA line of I2C communication with EEPROM DVI cable detection EEPROM write protection control for MCU working voltage ViewSonic Corporation Confidential - Enable panel power on /off control OSD "►" control to adjust value to increase OSD "◄" control to adjust value to decrease Selection of DDR Direct Bus Hardware reset to Scaler +...I 11 P3.0/RXD 12 P4.3/INT2 13 P3.1/TXD 14 P3.2/INT0 I 15 P3.3/INT1 O 16 P3.4/T0 O 17 P3.5/T1 I/O 18 P3.6/WR I 19 P3.7/RD O 20 XTAL2 21 XTAL1 22 GND 23 P4.0 24 P2.0/A8 25 P2.1/A9 26 P2.2/A10 27 P2.3/A11 28 P2.4/A12...
...with EEPROM SDA line of I2C communication with EEPROM DVI cable detection EEPROM write protection control for MCU working voltage ViewSonic Corporation Confidential - Enable panel power on /off control OSD "►" control to adjust value to increase OSD "◄" control to adjust value to decrease Selection of DDR Direct Bus Hardware reset to Scaler +...I 11 P3.0/RXD 12 P4.3/INT2 13 P3.1/TXD 14 P3.2/INT0 I 15 P3.3/INT1 O 16 P3.4/T0 O 17 P3.5/T1 I/O 18 P3.6/WR I 19 P3.7/RD O 20 XTAL2 21 XTAL1 22 GND 23 P4.0 24 P2.0/A8 25 P2.1/A9 26 P2.2/A10 27 P2.3/A11 28 P2.4/A12...
Service Manual
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... Power Lock [1] + [▲] OSD Lock Remark : All the short cuts function are only available while OSD off the monitor 2. Do Not Copy VA902/b 19 When "MENU OSD" display, press these keys to change the contents of Contrast and Brightness when the OSD is performed ...menu display A. Key Function Description CONTROL KEY KEYS FUNCTION [AUTO] [2] By pressing [AUTO] key, "Auto Image Adjust" is not open. [1] + [2] Toggle 720x400 and 640x400 mode when input 720x400 or 640x400 mode. [1 White Balance (Not shown on or power off ViewSonic Corporation Confidential - 5. TEST AND...
... Power Lock [1] + [▲] OSD Lock Remark : All the short cuts function are only available while OSD off the monitor 2. Do Not Copy VA902/b 19 When "MENU OSD" display, press these keys to change the contents of Contrast and Brightness when the OSD is performed ...menu display A. Key Function Description CONTROL KEY KEYS FUNCTION [AUTO] [2] By pressing [AUTO] key, "Auto Image Adjust" is not open. [1] + [2] Toggle 720x400 and 640x400 mode when input 720x400 or 640x400 mode. [1 White Balance (Not shown on or power off ViewSonic Corporation Confidential - 5. TEST AND...
Service Manual
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Status bar indicating OSD Lock or Unlock is locked will indicate "OSD Locked" OSD Lock should not lock Power Button and Power Lock function ViewSonic Corporation Confidential - OSD Control 3.1 OSD table Layer 1 Auto Image Adjust Contrast/Brightness Color Adjust Information Manual Image Adjust Setup Menu Memory Recall Layer 2 Contrast (+ / -) Brightness (+ / -) Srgb 9300K 6500K...
Status bar indicating OSD Lock or Unlock is locked will indicate "OSD Locked" OSD Lock should not lock Power Button and Power Lock function ViewSonic Corporation Confidential - OSD Control 3.1 OSD table Layer 1 Auto Image Adjust Contrast/Brightness Color Adjust Information Manual Image Adjust Setup Menu Memory Recall Layer 2 Contrast (+ / -) Brightness (+ / -) Srgb 9300K 6500K...
Service Manual
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RECOMMENDED PART LIST RECOMMENDED SPARE PARTS LIST (VA902-1) ViewSonic Model Number: VS10780-1W Rev: 1a Serial No. Prefix: PSS Item 1 Accessories: 2 3 4 5 6 7 8 Board Assembly: 9 10 11 Cabinets: 12 13 14 15 Cables: 16 17 18 Hardware: 19 20 21 22 23 24 25 26 Packing Material: 27 28 Description Power Cord (Australia...) Power Cord (British) Power Cord (CCC) Power Cord (CNS) Power Cord (EUROPE) Power Cord (PSE) Power Cord 10A/125V BLK 6FT UL/CSA IF Board Power & Inverter Board Control Board Cover, ...
RECOMMENDED PART LIST RECOMMENDED SPARE PARTS LIST (VA902-1) ViewSonic Model Number: VS10780-1W Rev: 1a Serial No. Prefix: PSS Item 1 Accessories: 2 3 4 5 6 7 8 Board Assembly: 9 10 11 Cabinets: 12 13 14 15 Cables: 16 17 18 Hardware: 19 20 21 22 23 24 25 26 Packing Material: 27 28 Description Power Cord (Australia...) Power Cord (British) Power Cord (CCC) Power Cord (CNS) Power Cord (EUROPE) Power Cord (PSE) Power Cord 10A/125V BLK 6FT UL/CSA IF Board Power & Inverter Board Control Board Cover, ...
Service Manual
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...Copy VA902/b 33 RECOMMENDED SPARE PARTS LIST (VA902b-1) ViewSonic Model Number: VS10780-1W Rev: 1a Serial No. Bolt,#4-40X11.8, NiFPR D-sub Conn. Hinge, Right. Prefix: PSW Item 1 Accessories: 2 3 4 5 6 7 8 Board Assembly: 9 10 11 Cabinets: 12 13 14 15 Cables: 16 17 18 Hardware: 19 20 21 22 23 24 25 26 Packing... Material: 27 28 Description Power Cord (Australia) Power Cord (British) Power Cord (CCC) Power Cord (CNS) Power Cord (EUROPE) Power Cord (PSE) Power Cord 10A/125V BLK 6FT UL/CSA IF Board Power & Inverter Board Control Board Cover, Hinge...
...Copy VA902/b 33 RECOMMENDED SPARE PARTS LIST (VA902b-1) ViewSonic Model Number: VS10780-1W Rev: 1a Serial No. Bolt,#4-40X11.8, NiFPR D-sub Conn. Hinge, Right. Prefix: PSW Item 1 Accessories: 2 3 4 5 6 7 8 Board Assembly: 9 10 11 Cabinets: 12 13 14 15 Cables: 16 17 18 Hardware: 19 20 21 22 23 24 25 26 Packing... Material: 27 28 Description Power Cord (Australia) Power Cord (British) Power Cord (CCC) Power Cord (CNS) Power Cord (EUROPE) Power Cord (PSE) Power Cord 10A/125V BLK 6FT UL/CSA IF Board Power & Inverter Board Control Board Cover, Hinge...
Service Manual
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... Manual, which allows continuous improvement of the Assessment Matrix below, for your completion of our products. What do you have any suggestions to ViewSonic Corporation. Front Panel Function Control Description 4. Troubleshooting Flow Chart 7. Are you in the USA at facsimile 1-909-839-7943. Item 1. Readers basic data: Name: Title: Company: Add...
... Manual, which allows continuous improvement of the Assessment Matrix below, for your completion of our products. What do you have any suggestions to ViewSonic Corporation. Front Panel Function Control Description 4. Troubleshooting Flow Chart 7. Are you in the USA at facsimile 1-909-839-7943. Item 1. Readers basic data: Name: Title: Company: Add...
User Guide
Page 2
Contents TCO Information i Compliance Information 1 Important Safety Instructions 2 Copyright Information 3 Product Registration 3 Getting Started Package Contents 4 Precautions 4 Quick Installation 5 Wall Mounting (Optional 6 Using the LCD Display Setting the Timing Mode 7 OSD and Power Lock Settings 7 Adjusting the Screen Image 8 Main Menu Controls 10 Other Information Specifications 13 Troubleshooting 14 Customer Support 15 Cleaning the LCD Display 16 Limited Warranty 17 ViewSonic VA902/VA902b
Contents TCO Information i Compliance Information 1 Important Safety Instructions 2 Copyright Information 3 Product Registration 3 Getting Started Package Contents 4 Precautions 4 Quick Installation 5 Wall Mounting (Optional 6 Using the LCD Display Setting the Timing Mode 7 OSD and Power Lock Settings 7 Adjusting the Screen Image 8 Main Menu Controls 10 Other Information Specifications 13 Troubleshooting 14 Customer Support 15 Cleaning the LCD Display 16 Limited Warranty 17 ViewSonic VA902/VA902b
User Guide
Page 10
... 5 seconds. • OSD Unlock: Press and hold [1] and the down arrow T for 10 seconds. ViewSonic VA902/VA902b 7 Set the refresh rate: See your LCD display. doing so may result in your LCD display's power will automatically turn ON when power is restored. • Power Button Unlock: Press and hold ... for 10 seconds. Using the LCD Display Setting the Timing Mode Setting the timing mode is pressed the message Power Button Locked will display for 5 seconds. example 60 Hz). After setting the timing mode, use the OSD (On-screen Display) controls to exceed the maximum refresh rate ...
... 5 seconds. • OSD Unlock: Press and hold [1] and the down arrow T for 10 seconds. ViewSonic VA902/VA902b 7 Set the refresh rate: See your LCD display. doing so may result in your LCD display's power will automatically turn ON when power is restored. • Power Button Unlock: Press and hold ... for 10 seconds. Using the LCD Display Setting the Timing Mode Setting the timing mode is pressed the message Power Button Locked will display for 5 seconds. example 60 Hz). After setting the timing mode, use the OSD (On-screen Display) controls to exceed the maximum refresh rate ...
User Guide
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...shortcut to display the Contrast adjustment control screen. Displays the Main Menu or exits the control screen and saves adjustments. ViewSonic VA902/VA902b 8 Also a shortcut to Auto Image Adjust. Also toggles between two controls on the screen. Power light ...Green = ON Orange = Power Saving Standby Power On/Off Scrolls through menu options and adjusts the displayed control. Main Menu with OSD controls Front Control...
...shortcut to display the Contrast adjustment control screen. Displays the Main Menu or exits the control screen and saves adjustments. ViewSonic VA902/VA902b 8 Also a shortcut to Auto Image Adjust. Also toggles between two controls on the screen. Power light ...Green = ON Orange = Power Saving Standby Power On/Off Scrolls through menu options and adjusts the displayed control. Main Menu with OSD controls Front Control...
User Guide
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...line at the bottom of the screen shows the current functions of the LCD display.) ViewSonic VA902/VA902b 9 POSITION until the screen image is adjustable through the OSD timeout setting in the setup menu. 2. A control screen like the one shown below appears. The following to adjust the display...around the edge of the screen should barely touch the illuminated "active area" of buttons 1 and 2: Exit or select the Brightness control. 4. To select a control to adjust, pressSorTto scroll up or down in the Main Menu. 3. POSITION and V. To adjust the setting, press the upSor downTbuttons...
...line at the bottom of the screen shows the current functions of the LCD display.) ViewSonic VA902/VA902b 9 POSITION until the screen image is adjustable through the OSD timeout setting in the setup menu. 2. A control screen like the one shown below appears. The following to adjust the display...around the edge of the screen should barely touch the illuminated "active area" of buttons 1 and 2: Exit or select the Brightness control. 4. To select a control to adjust, pressSorTto scroll up or down in the Main Menu. 3. POSITION and V. To adjust the setting, press the upSor downTbuttons...
User Guide
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...screen image. sRGB - Enabling this setting allows the LCD display to the screen image for warmer white and richer red. 5400K - Adds red to more accurately display colors the way they were originally intended. ViewSonic VA902/VA902b 10 Adds blue to the screen image for color ...most office settings with support being included in many of the latest applications. Press the [2] button to eliminate waviness and distortion. Control Explanation Auto Image Adjust automatically sizes, centers, and fine tunes the video signal to execute Auto Image Adjust. Adds green to the...
...screen image. sRGB - Enabling this setting allows the LCD display to the screen image for warmer white and richer red. 5400K - Adds red to more accurately display colors the way they were originally intended. ViewSonic VA902/VA902b 10 Adds blue to the screen image for color ...most office settings with support being included in many of the latest applications. Press the [2] button to eliminate waviness and distortion. Control Explanation Auto Image Adjust automatically sizes, centers, and fine tunes the video signal to execute Auto Image Adjust. Adds green to the...
User Guide
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... signal input) coming from the graphics card in the computer, the LCD model number, the serial number, and the ViewSonic® website URL. Manual Image Adjust H./V. Press button [2] to the right. ViewSonic VA902/VA902b 11 When all color adjustments are complete, press button [1] twice. Size...card's user guide for red (R), green (G), and blue (B). 1. NOTE: Try the Auto Adjust function before using the Fine Tune control. Control Explanation User Color - The Vertical setting moves the screen image up or down . Sharpness adjusts the clarity and focus of the screen ...
... signal input) coming from the graphics card in the computer, the LCD model number, the serial number, and the ViewSonic® website URL. Manual Image Adjust H./V. Press button [2] to the right. ViewSonic VA902/VA902b 11 When all color adjustments are complete, press button [1] twice. Size...card's user guide for red (R), green (G), and blue (B). 1. NOTE: Try the Auto Adjust function before using the Fine Tune control. Control Explanation User Color - The Vertical setting moves the screen image up or down . Sharpness adjusts the clarity and focus of the screen ...
User Guide
Page 15
... below: Language Select allows the user to turn the OSD background On or Off. For example, with a "15 second" setting, if a control is displayed. OSD Background allows the user to choose the language used in the Specifications of time the OSD screen is not pushed within 15... seconds, the display screen disappears. Resolution Notice advises the optimal resolution to move the OSD menus and control screens. OSD Position allows the user to use. ViewSonic VA902/VA902b 12 OSD Timeout sets the length of this manual. Memory Recall returns the adjustments back to factory settings if...
... below: Language Select allows the user to turn the OSD background On or Off. For example, with a "15 second" setting, if a control is displayed. OSD Background allows the user to choose the language used in the Specifications of time the OSD screen is not pushed within 15... seconds, the display screen disappears. Resolution Notice advises the optimal resolution to move the OSD menus and control screens. OSD Position allows the user to use. ViewSonic VA902/VA902b 12 OSD Timeout sets the length of this manual. Memory Recall returns the adjustments back to factory settings if...
User Guide
Page 17
... G3, you have an older graphics card, contact ViewSonic® for a non-DDC adapter. ViewSonic VA902/VA902b 14 Control buttons do not work • Press only one button at a time. Power is ON but no screen image • Make sure the video cable supplied with the LCD display is securely connected. If the other end...
... G3, you have an older graphics card, contact ViewSonic® for a non-DDC adapter. ViewSonic VA902/VA902b 14 Control buttons do not work • Press only one button at a time. Power is ON but no screen image • Make sure the video cable supplied with the LCD display is securely connected. If the other end...