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Service Manual ViewSonic VG920 Model No VS10790 19” Color TFT LCD Display Manufacture Date: Dec-30-05 -1– ViewSonic Corporation Confidential - Do Not Copy VG920 Copyright Copyright © 2005 by ViewSonic Corporation. All rights reserved. No part of this publication may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language or manual or otherwise, without the prior written permission of ViewSonic Corporation. Disclaimer ViewSonic makes no representation or warranties, either expressed or implied, with respect to the contents hereof and specifically disclaims any warranty of merchantability of 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 Corporation. All other trademarks used within this document are the property of their respective owners. Revision History Revision Date Description of changes Approval A00 Aug-24-05 Initial Release YG.WANG A01 Dec-30-05 Update the Handing and Placing Methods and the Circuit Description and the Adjustment Procedure YG.WANG -2– ViewSonic Corporation Confidential - Do Not Copy VG920 TABLE OF CONTENTS 1. Precautions And Safety Notices 4 2. Specification 7 3. Front Panel Control And Indicators 10 4. Circuit Description 16 5. Adjustment Procedure 23 6. Troubleshooting Flow Chart 43 7. Recommended Spare Parts List 44 8. Exploded Diagram And Spare Parts List 62 9. Disassemble Process 65 10. Block Diagram 72 11. Schematic Diagram 73 12. PCB Layout Diagram 80 -3– ViewSonic Corporation Confidential - Do Not Copy VG920 1. Precautions And Safety Notices 1.1 SAFETY PRECAUTIONS This monitor is manufactured and tested on a ground principle that a user’s safety comes first. However, improper use or installation may cause damage to the monitor as well as the user. Carefully go over the following WARNINGS before installing and keep this guide handy. WARNINGS .This monitor should be operated only at the correct power sources indicated on the label on the rear end of the monitor. If you’re unsure of the power supply in your residence, consult you local dealer or power company. .Use only the special power adapter that comes with this monitor for power input. .Do not try to repair the monitor your self as it contains no user-serviceable parts. This monitor should only be repaired by a qualified technician. .Do not remove the monitor cabinet. There is high-voltage parts inside that may cause electric shock to human bodies, even when the power cord is unplugged. .Stop using the monitor if the cabinet is damaged. Have it checked by a service technician. .Put your monitor only in a clean, dry environment. If it gets wet, unplug the power cable immediately and consult your service technician. .Always unplug the monitor before cleaning it .Clean the cabinet with a clean, dry cloth. Apply non-ammonia based cleaner onto the cloth, not directly onto the glass screen. .Keep the monitor away from magnetic objects, motors, TV sets, and transformer. .Do not place heavy objects on the monitor or power cord. 1.2 PRODUCT SAFETY NOTICE Many electrical and mechanical parts in this chassis have special safety visual inspections and the protection afforded by them cannot necessarily be obtained by using replacement components rated for higher voltages, wattage, etc. Before replacing any of these components read the parts list in this manual carefully. The use of substitute replacement parts which do not have the same safety characteristics as specified in the parts list may create shock, fire ,or other hazards. 1.3 SERVICE NOTES 1. When replacing parts or circuit boards, clamp the lead wires around terminals before soldering. 2. When replacing a high wattage resistor(more than 1W of metal oxide film resistor) in circuit board, keep the resistor about 5mm away from circuit board. 3. Keep wires away from high voltage, high temperature components and sharp edges. 4. Keep wires in their original position so as to reduce interference. 5. Usage of this product please refer to also user’s manual. -4– ViewSonic Corporation Confidential - Do Not Copy VG920 1.4 HANDING AND PLACING METHODS Correct Methods: Incorrect Methods: Only touch the metal frame of the LCD Surface of the LCD panel is pressed by fingers panel or the front cover of the monitor. Do and that may cause “Mura.” not touch the surface of the polarizer. Take out the monitor with cushions Taking out the monitor by grasping the LCD panel. That may cause “Mura.” -5– ViewSonic Corporation Confidential - Do Not Copy VG920 Placing the monitor on foreign objects. That Place the monitor on a clean and soft foam could scratch the surface of the panel or cause pad. “Mura.” Place the monitor on the lap, the panel The panel is placed facedown on the lap. That surface must be upwards. may cause “Mura.” -6– ViewSonic Corporation Confidential - Do Not Copy VG920 2. Specification 2.1 PRODUCT SPECIFICATIONS LCD Panel 480mm (19” )TFT Recommend Resolution 1280 x1024@60Hz Pixel Dimension 0.294(H) x 0.294(V)mm LCD Display Color 16.2M Colors (RGB 6-bit+FRC data) Viewing Angle Horizontal: 140 ° Vertical: 125 ° Contrast Ratio 550:1 (Typ.) Brightness 270 cd/㎡(Typ.) Response Time 8ms(Typ.) Active Display Area 376.32(H) x 301.06(V) Maximum Pixel Clock 135 MHz Horizontal Frequency 30 – 82 kHz Vertical Refresh Rate 50 – 75 Hz. Temperature Operating: 0°C to +40°C Storage: -20°C to +60°C Power Management Energy Star compliant VESA DPMS compatible <1 W Power Input Voltage : 90V~264V Input Frequency : 47.5Hz~63Hz Consumption: 53 Watts(Max.) 50 Watts(Typ.) -7– ViewSonic Corporation Confidential - Do Not Copy VG920 2.2 INTERFACE DESCRIPTION D-SUB 15 PIN CONNECTOR 1 6 11 5 10 15 Pin Number Pin Function 1 Red video input 2 Green video input 3 Blue video input 4 No Connection 5 Ground 6 Red video ground 7 Green video ground 8 Blue video ground 9 +5V 10 H/V sync ground 11 No connection 12 (SDA) 13 Horizontal sync (Composite sync) 14 Vertical sync 15 (SCL) SIGNAL LEVEL -8– ViewSonic Corporation Confidential - Do Not Copy VG920 DVI-D 24 PIN CONNECTOR Pin No. Signal Name Description 1 RX2- TMDS negative differential input, channel 2 2 RX2+ TMDS positive differential input, channel 2 3 GND Logic Ground 4 Reserved 4 Reserved. No connection 5 Reserved 5 Reserved. No connection 6 DDC-CLK DDC2B Clock 7 DDC-DAT DDC2B Data 8 Reserved 8 Reserved. No connection 9 RX1- TMDS negative differential input, channel 1 10 11 12 RX1+ GND Reserved 12 TMDS positive differential input, channel 1 Logic Ground Reserved. No connection 13 Reserved 13 Reserved. No connection 14 VCCX Power 15 GND Logic Ground 16 SENS SENSE Pin, Pull High 17 RX0- TMDS negative differential input, channel 0 18 RX0+ TMDS positive differential input, channel 0 19 GND Logic Ground 20 Reserved 20 Reserved. No connection 21 Reserved 21 Reserved. No connection 22 GND Logic Ground 23 RXC+ TMDS positive differential input, reference clock 24 RXC- TMDS negative differential input, reference clock -9– ViewSonic Corporation Confidential - Do Not Copy VG920 3. Front Panel Function Controls And Indicators Mute: Audio Mute button turns the sound off Volume+/ Volume-:Decreases or increases volume Button 1:Scrolls through menu options and adjusts the displayed control. Also a shortcut to display the Contrast adjustment control screen. [▲]、[▼]:Displays the control screen for the highlighted control. Also toggles between two controls on some screens. Also a shortcut to toggle analog and digital connection. Button 2:Displays the control screen for the highlighted control. Also toggles between two controls on some screens. Also a shortcut to toggle analog and digital connection. Power:Standby Power On/Off Power LED (Front Head) Green – ON Orange – Active Off Dark = Soft Power Switch OFF - 10 – ViewSonic Corporation Confidential - Do Not Copy VG920 Do the following to adjust the display setting: 1. To display the Main Menu, press button [1]. NOTE: All OSD menus and adjustment screens disappear automatically after about 15 seconds. This is adjustable through the OSD timeout setting in the setup menu. 2. To select a control to adjust, press or ▼ to ▲ scroll up or down in the Main Menu. 3. After the desired control is selected, press button [2]. A control screen like the one shown below appears. The command line at the bottom of the control screen tells what to do next from this screen. You can toggle between control screens, adjust the selected option, or exit the screen. 4. To adjust the setting, press the up ▼ or ▲ down T buttons. 5. To save the adjustments and exit the menu, press button [1] twice. The following tips may help you optimize your display: • Adjust the computer's graphics card so that it outputs a 1280 x 1024 @ 60Hz video signal to the LCD display. (Look for instructions on “changing the refresh rate” in the graphics card's user guide.) • 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.) - 11 – ViewSonic Corporation Confidential - Do Not Copy VG920 Main Menu Controls Adjust the menu items shown below by using the up Control and down buttons. Explanation Auto Image Adjust sizes and centers the screen image automatically. Contrast adjusts the difference between the image background (black level) and the foreground (white level). Brightness adjusts background black level of the screen image. Input Select allows the user to toggle between an analog and a digital signal. Audio Adjust Volume increases the volume, decreases the volume, and mutes the audio. Mute temporarily silences audio output. Color Adjust provides several color adjustment modes, including preset color temperatures and a User Color mode which allows independent adjustment of red (R), green (G), and blue (B). The factory setting for this product is 6500K (6500 Kelvin). 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. User Color Individual adjustments for red (R), green (G), and blue (B). 1. To select color (R, G or B) press button [2]. 2. To adjust selected color, press ▼ and ▲. Important: If you select RECALL from the Main Menu when the product is set to a Preset Timing Mode, colors return to the 6500K factory preset. - 12 – ViewSonic Corporation Confidential - Do Not Copy VG920 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 instructions on changing the resolution and refresh rate (vertical frequency). NOTE: VESA 1280 x 1024 @ 60Hz (recommended) means that the resolution is 1280 x 1024 and the refresh rate is 60 Hertz. Manual Image Adjust Sub-menu H. Size (Horizontal Size) adjusts the width of the screen image. H./V. Position (Horizontal/Vertical Position) moves the screen image left or right and up or down. Fine Tune sharpens the focus by aligning text and/or graphics with pixel boundaries. NOTE: Try Auto Image Adjust first. Sharpness adjusts the clarity and focus of the screen image. - 13 – ViewSonic Corporation Confidential - Do Not Copy VG920 Setup Menu displays the menu shown below: Language Select allows the user to choose the language used in the menus and control screens. Resolution Notice allows the user to enable or disable this notice. If you enable the Resolution Notice shown above and your computer is set at a resolution other than 1280 x 1024, the following screen appears. OSD Position allows the user to move the OSD menus and control screens. OSD Timeout sets the length of time the OSD screen is displayed. For example, with a “30 second” setting, if a control is not pushed within 30 seconds, the display screen disappears. 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. - 14 – ViewSonic Corporation Confidential - Do Not Copy VG920 SHORT CUTS FUNCTION FROM THE BUTTONS [1] Main Menu [2] Input toggle (Analog or Digital). [▼] 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 [;+] or [;-] To immediately activate Volume menu for audio volume. [;+] + [;X] Recall volume to default [1] + [2] toggle 720x400 and 640x400 mode when input 720x400 or 640x400 mode [1] + [;X] White Balance. (Not shown on user’s guide) [2] + [▼] • Power Button Lock: Press and hold “[2], & ▼” for 10 seconds. If the power button is pressed the message Power Button Locked will display for 5 seconds. With or without this setting, after a power failure, your LCD display’s power will automatically turn ON when power is restored. • Power Button Unlock: Press and hold “[2], & ▼” again for 10 seconds. [1] + [▲] • OSD Lock: Press and hold "[1], & (▲)" for 10 seconds. If any buttons are pressed the message OSD Locked will display for 5 seconds. • OSD Unlock: Press and hold “[1], & ▲” again for 10 seconds. Remark : All the short cuts function are only available while OSD off - 15 – ViewSonic Corporation Confidential - Do Not Copy VG920 4. Circuit Description 4.1 LCD MONITOR DESCRIPTION The LCD MONITOR will contain a Main Board, an Power Board, Key Board which house the flat panel control logic, brightness control logic and DDC. Monitor Block Diagram Flat Panel and CCFL backlight CCFL Drive. RS232 Connector For white balance adjustment in factory mode Main Board Power Board (Include: adapter, inverter) Video signal, DDC Key Board AC-IN 100V-240V 4.2 HOST Computer MAIN BOARD BLOCK FUNCTION DESCRIPTION The main board contains panel control logic, brightness control logic, DDC and DC convert DC circuit and so on. PWPC board R G B H V SDA SCL TSUM56AK OSC EPROM EPROM Backlight and Panel Keyboard - 16 – ViewSonic Corporation Confidential - Do Not Copy VG920 4.3 PWPC BOARD BLOCK FUNCTION DESCRIPTION PWPC board combines to adapter and inverter, Adapter which commonly consists of bridge rectifier and filter, start circuit, PWM control circuit, protection circuits and convert to 12V, 5V DC voltage by input 90V-240V AC voltage that provide power supply for each chips in the main board and inverter. Inverter is DC TO AC circuit. It changes the 12v DC of power supply to about 600-800v AC that drives the backlight. It mostly consists of starting circuit, PWM controller, DC changing circuit, LC surging circuit, output circuit and protection circuit etc. AC input Bridge Rectifier and Filter EMI filter Rectifier CMOS Transformer Start Circuit R903, R904,R905 CN902 5V PWM Control IC OSC and Output Circuit Over Voltage Protect 12V ON/OF MOSFET Q203 DC Convert Circuit Lamp Feedback Circuit Over Voltage PWM Control IC ON/OFF Control DIM - 17 – ViewSonic Corporation Confidential - Do Not Copy VG920 4.4 INTRODUCTION OF IC STUM56AK(U401): integrate ADC, OSD, SCALER, MCU, LVDS, convert analog RGB into digital and room and shrink scaling output to LCD panel. PIN Function: Pin 70 71 72 73 65 66 36 37 19 22 11 63 64 62 61 51 21 29 4 33 34 44、50 60 52 34 14、67、95、 103、115 13、38、41、 47、96、116 Symbol SDO CSZ SCK SDI DDCA_SDA/RS232_TX Description SPI flash serial data output; Input w/5V-tolerant SPI flash chip select; output SPI flash serial select; output SPI flash serial data input; output DDC data for analog interface; 4mA driving strength/UART transmitter/GPIO; I/O w/5V-tolrant DDCA_SDA/RS232_RX DDC data for analog interface/UART transmitter/GPIO;Input w/5V-tolrant DDCD_SDA DDC data for DVI interface; 4mA driving strength; I/O w/5V-tolerant DDCD_SCL DDC clock for DVI interface; Input w/5V-tolerant RST Chip reset; High reset; Input w/5V-tolerant RSTN Chip reset; Low reset; Input w/5W-toerant VCTRL Regulator control; Output HSYNCO Analog HSYNC input VSYNCO Analog VSYNC input REFP Internal ADC top de-coupling pin REFM Internal ADC bottom de-coupling pin REXT External resistor 390 ohm to AVDD_DVI PWM1 PWM1; 4mA driving strength; Output PWM0 PWM0; 4mA driving strength; Output BYPASS For External Bypass Capacitor XIN Xin; Crystal Oscillator Input XOUT Xout; Crystal Oscillator Output DVI Power 3.3V AVDD_DVI ADC Power 3.3V AVDD_ADC PLL Power 3.3V AVDD_PLL MPLL Power 3.3V AVDD_MPLL VDDP Digital Output Power 3.3V VDDC Digital Core Power 1.8V AIC1084-33PM (U702): DC power convert, used to 5v convert 3.3v. LT1117-18(U701): DC power convert, used to 5v convert 3.3v. - 18 – ViewSonic Corporation Confidential - Do Not Copy VG920 TPA3003D2 (U601): The TPA3003D2 is a audio amplifier IC,3-W efficient, driving speakers as low as 8 , range of gain from -40dB to 36 dB. The function of each pin and the inside circuit diagram are as follows: Circuit Diagram - 19 – ViewSonic Corporation Confidential - Do Not Copy VG920 PIN Function TERMINAL NO. NAME AGND 9,10,26 AVcc 33 AVDD 29 AVDDREF 7 BSLN 13 BSLP 24 BSRN 48 BSRP 37 I/O DESCRIPTION O O I/O I/O I/O I/O COSC 28 I/O FADE 30 I Analog ground for digital/analog cells in core High-voltage analog power supply (8.5V to 14V) 5-V Regulated output 5-V Reference output-provided for connection to adjacent VREF terminal. Bootstrap I/O for left channel, negative high-side FET Bootstrap I/O for left channel, positive high-side FET Bootstrap I/O for right channel, negative high-side FET Bootstrap I/O for right channel, positive high-side FET I/O for charge/discharging currents onto capacitor for ramp generator triangle wave biased at V2P5 Input for controlling volume ramp rate when cycling SD or during power-up. A logic low on this pin places the amplifier in fade mode. A logic high on this pin allows a quick transition to the desired volume setting. Negative differential audio input for left channel Positive differential audio input for left channel Class-D 1/2-H-bridge negative output for left channel Class-D 1/2-H-bridge positive output for left channel A logic high on this pin disables the outputs. A low on this pin enables the outputs. Not internally connected Power ground for left channel H-bridge Power ground for right channel H-bridge Power supply for left channel H-bridge(tied to pins 22 and 23 internally), not connected to PVCCR or AVcc Power supply for left channel H-bridge(tied to pins 14 and 15 internally), not connected to PVCCR or AVcc Power supply for right channel H-bridge(tied to pins 46 and 47 internally), not connected to PVCCL or AVcc Power supply for right channel H-bridge(tied to pins 38 and 39 internally), not connected to PVCCL or AVcc Ground for gain control circuitry. Connect to AGND. If using a DAC to control the volume, connect the DAC ground to this terminal. Positive differential audio input for right channel Negative differential audio input for right channel Current setting resistor for ramp generator. Nominally equal to 1/8*Vcc Class-D 1/2-H-bridge negative output for right channel Class-D 1/2-H-bridge positive output for right channel Shutdown signal for IC (low=shutdown, high=operational). TTL logic levels with compliance to Vcc. Internally generated voltage supply for left channel bootstrap capacitors. Internally generated voltage supply for right channel bootstrap capacitors. DC voltage that sets the gain of the amplifier. Analog reference for gain control section. 2.5-V Reference for analog cells, as well as reference for unused audio input when using single-ended inputs. LINN 6 LINP 5 LOUTN 16,17 LOUTP 20,21 MUTE 34 NC 31,32,35 PGNDL 18,19 PGNDR 42,43 I I O O I - PVVCCL 14,15 - PVVCCL 22,23 - PVCCR 38,39 - PVCCR 46,47 - 12 - 3 2 27 44,45 40,41 I I I/O O O 1 I REFGND RINP RINN ROSC ROUTN ROUTP SD VCLAMPL 25 VCLAMPR 36 VOLUME 11 VREF 8 I I V2P5 O 4 - 20 – ViewSonic Corporation Confidential - Do Not Copy VG920 NCP1203D60R2G (IC901): PWM control, high-voltage startup current. The circuit unit has functions such as over-current protection, over-voltage protection, output short-circuit protection and etc. The function of each pin and the inside circuit diagram are as follows: Pin Pin Function Pin Description No. Name This pin lets you adjust the level at which the cycle Adjust the skipping 1 Adj skipping process takes place. Shorting this pin to ground, peak current permanently disables the skip cycle feature. By connecting an optocoupler to this pin, the peak current Sets the peak 2 FB setpoint is adjusted accordingly to the output power current setpoint demand. Skip cycle occurs when FB falls below Vpin1. This pin senses the primary current and routes it to the 3 CS Current sense input internal comparator via an L.E.B. 4 GND The IC ground − 5 Drv Driving pulses The driver’s output to an external MOSFET. This pin is connected to an external bulk capacitor of 6 VCC Supplies the IC typically 22 F. This unconnected pin ensures adequate creepage 7 NC − distance. Ensure a clean and Connected to the high−voltage rail, this pin injects a 8 HV lossless startup constant current into the VCC capacitor during the startup sequence sequence. - 21 – ViewSonic Corporation Confidential - Do Not Copy VG920 TL1451 (IC201): PWM control, voltage range for working: 3.6~35V, Has such functions as short-voltage protection, Over-voltage protection, over-current protection and etc. The function of each pin and the circuit diagram inside are as follows: Pin Symbol Description Pin Symbol Description 1 CT External timing capacitor 9 VCC Power supply 2 RT External timing resistor 10 2OUT Output 2 3 1IN+ Positive input for error amplifier 1 11 2DTC Output 2 dead time/soft start setting 4 1IN- Positive input for error amplifier 2 12 2FBK Error amplifier 2 output 5 1FBK Error amplifier 1 output 13 2IN+ Positive input for error amplifier 6 1DTC Output 1 dead time/soft start setting 14 2IN- Positive input for error amplifier 7 1OUT Output 1 15 SCP Timing latch setting 8 GND Ground 16 REF Reference voltage output (2.5v) - 22 – ViewSonic Corporation Confidential - Do Not Copy VG920 5. Adjust Procedure 5.1 ADJUSTMENT CONDITIONS AND PRECAUTIONS 1. Approximately 30 minutes should be allowed for warm up before proceeding. 2. Adjustments should be undertaken only on those necessary elements since most of them have been carefully preset at the factory. 3. ESD protection is needed before adjustment. 5.2 MAIN ADJUSTMENTS NO. 1. 2. 5.3 FUNCTIONS White Balance Geometry DESIGNATION Function Key Function Key ALIGNMENT PROCEDURES Approximately 30 minutes should be allowed for warm up before proceeding White-Balance adjustment. 1. Adjust of White Balance 1.)How to do the Chroma-7120 MEM .Channel setting A、Reference to chroma 7120 user guide B、Use “ SC” key and “ NEXT” key to modify xyY value and use “ID” key to modify the TEXT description Following is the procedure to do white-balance adjust 2.)Setting the color temp. You want A、MEM.CHANNEL9 ( 9300 color): 9300 color temp. parameter is Wx = 0.283 ±0.03;Wy = 0.298 ±0.03; Y = 250 ±20 cd/m2 , B、MEM.CHANNEL10 ( 6500 color): 6500 color temp. parameter is Wx = 0.313±0.03;Wy = 0.329 ±0.03; Y = 260 ±20 cd/m2, C、MEM.CHANNEL 11 ( 5400 color): 5400 color temp. parameter is Wx = 0.335±0.03;Wy = 0.350 ±0.03; Y = 250 ±20 cd/m2, D、MEM.CHANNEL10 ( SRGB color): 6500 color temp. parameter is Wx = 0.313±0.03;Wy = 0.329 ±0.03; Y = 220 ±20 cd/m2, - 23 – ViewSonic Corporation Confidential - Do Not Copy VG920 3.)Into factory mode of VG720 A、First Power off, then press Switch 2 button along with press Power button will activate the factory mode, then MCU will do AUTO LEVEL automatically. Meanwhile press MENU the OSD screen will located at LEFT TOP OF PANEL. 4.)Bias adjustment : Set the Contrast to 70 Adjust the Brightness to 100. 5.)Gain adjustment : Move cursor to “-F-” and press MENU key A、Adjust 9300 color-temperature (1)、Switch the Chroma-7120 to RGB-Mode (with press “MODE” button ) (2)、Switch the MEM. channel to Channel 9 ( with up or down arrow on chroma 7120 ) (3)、The LCD-indicator on chroma 7120 will show x = 0.283 ±0.03, y =0.298 ±0.03, Y = 250 ±20 cd/m2 (4)、Adjust the RED of color1 on factory window until chroma 7120 indicator reached the value R=100 (5)、Adjust the GREEN of color1 on factory window until chroma 7120 indicator reached the value G=100 (6)、Adjust the BLUE of color1 on factory window until chroma 7120 indicator reached the value B=100 (7)、Repeat above procedure ( item 4,5,6) until chroma 7120 RGB value meet the tolerance =100±5 B、Adjust 6500 color-temperature (1)、Switch the chroma-7120 to RGB-Mode (with press “MODE” button ) (2)、Switch the MEM .channel to Channel 10( with up or down arrow on chroma 7120 ) (3)、The LCD-indicator on chroma 7120 will show x = 0.313 ±0.03, y = 0.329 ±0.03, Y = 260 ±20 cd/m2 (4)、Adjust the RED of color3 on factory window until chroma 7120 indicator reached the value R=100 (5)、Adjust the GREEN of color3 on factory window until chroma 7120 indicator reached the value G=100 (6)、Adjust the BLUE of color3 on factory window until chroma 7120 indicator reached the value B=100 (7)、Repeat above procedure ( item 4,5,6) until chroma 7120 RGB value meet the tolerance =100±5 - 24 – ViewSonic Corporation Confidential - Do Not Copy VG920 C、Adjust 5400 color-temperature (1) Switch the chroma-7120 to RGB-Mode (with press “MODE” button ) (2)、Switch the MEM .channel to Channel 11( with up or down arrow on chroma 7120 ) (3)、The LCD-indicator on chroma 7120 will show x = 0.335 ±0.03, y = 0.350 ±0.03, Y = 250 ±20 cd/m2 (4)、Adjust the RED of color3 on factory window until chroma 7120 indicator reached the value R=100 (5)、Adjust the GREEN of color3 on factory window until chroma 7120 indicator reached the value G=100 (6)、Adjust the BLUE of color3 on factory window until chroma 7120 indicator reached the value B=100 (7)、Repeat above procedure ( item 4,5,6) until chroma 7120 RGB value meet the tolerance =100±5 D、Adjust SRGB color-temperature (1)、Switch the chroma-7120 to RGB-Mode (with press “MODE” button ) (2)、Switch the MEM .channel to Channel 10( with up or down arrow on chroma 7120 ) (3)、The LCD-indicator on chroma 7120 will show x = 0.313 ±0.03, y = 0.329 ±0.03, Y = 220 ±20 cd/m2 (4)、Adjust the RED of color3 on factory window until chroma 7120 indicator reached the value R=100 (5)、Adjust the GREEN of color3 on factory window until chroma 7120 indicator reached the value G=100 (6)、Adjust the BLUE of color3 on factory window until chroma 7120 indicator reached the value B=100 (7)、Repeat above procedure ( item 4,5,6) until chroma 7120 RGB value meet the tolerance =100±5 E、Press reset key and Turn the Power-button “off to on” to quit from factory mode. 2. Geometry 1).Set cross-hatch pattern and preset timing as timing table listed. 2).Change to each mode in turn and wait for the monitor finish auto-alignment and save press before change to next mode. 3).Until all of modes are adjusted,exit OSD menu and press POWER OFF to exit factory mode. - 25 – ViewSonic Corporation Confidential - Do Not Copy VG920 5.4 Factory Defaults Item Contrast Brightness Volume Balance Bass Treble Color Temperature Defaults 70% 100% 50% 50% 50% 50% 6500K Item Sharpness OSD H. Position OSD V. Position OSD Time Out OSD Background OSD PIVOT Resolution Notice 720x400/640x400 Defaults 33% 50% 50% 15 Sec On Off Enabled 720x400 5.5 Function Test 1 Product: 17” LCD Monitor 2 Test Equipment: Color Video Signal & Pattern (or PC with SXGA resolution and a sound card) 3 Test Condition: Before function test and alignment, each LCD Monitor should be warmed up for at least 30 minutes with the following conditions: (a)In room temperature, (b) With full-white screen, RGB, and Black (c) With cycled display modes, 640*480 (H=43.27kHz, V=85Hz) 800*600 (H=53.7kHz, V=85Hz) 1024*768 (H=68.67kHz, V=85Hz) 1280*1024 (H=79.97kHz, V=75Hz) 4 Test Display Modes & Pattern Compatible Modes Analog 640 x 350 @ 70Hz, 31.5kHz 640 x 400 @ 70Hz, 31.5kHz 640 x 480 @ 60Hz, 31.5kHz 640 x 480 @ 67Hz, 35.0kHz 640 x 480 @ 72Hz, 37.9kHz 640 x 480 @ 75Hz, 37.5kHz 720 x 400 @ 70Hz, 31.5kHz 800 x 600 @ 56Hz, 35.1kHz 800 x 600 @ 60Hz, 37.9kHz 800 x 600 @ 75Hz, 46.9kHz 800 x 600 @ 72Hz, 48.1kHz 832 x 624 @ 75Hz, 49.7kHz 1024 x 768 @ 60Hz, 48.4kHz Digital 640 x 350 @ 70Hz, 31.5kHz 640 x 400 @ 70Hz, 31.5kHz 640 x 480 @ 60Hz, 31.5kHz 640 x 480 @ 67Hz, 35.0kHz 640 x 480 @ 72Hz, 37.9kHz 640 x 480 @ 75Hz, 37.5kHz 720 x 400 @ 70Hz, 31.5kHz 800 x 600 @ 56Hz, 35.1kHz 800 x 600 @ 60Hz, 37.9kHz 800 x 600 @ 75Hz, 46.9kHz 800 x 600 @ 72Hz, 48.1kHz 832 x 624 @ 75Hz, 49.7kHz 1024 x 768 @ 60Hz, 48.4kHz - 26 – ViewSonic Corporation Confidential - Do Not Copy VG920 1024 x 768 @ 70Hz, 56.5kHz 1024 x 768 @ 72Hz, 58.1kHz 1024 x 768 @ 75Hz, 60.0kHz 1280 x 1024 @ 60Hz, 63.4kHz 1280 x 1024 @ 75Hz, 79.97kHz 1280x 720 @ 60Hz, 45kHz 1024 x 768 @ 70Hz, 56.5kHz 1024 x 768 @ 72Hz, 58.1kHz 1024 x 768 @ 75Hz, 60.0kHz 1280 x 1024 @ 60Hz, 63.4kHz 1280 x 1024 @ 75Hz, 79.97kHz 1280x 720 @ 60Hz, 45kHz Function Test Display Pattern Item 1 2 Test Content Pattern Frequency & Fine Line Moire Tracking Contrast/Bright 16 Gray Scale ness Horizontal&Vertical Thickness 3 Boundary 4 RGB Color RGB Color Intensities Performance 5 Screen Uniformity Flicker 6 Dead Pixel/Line White Screen & Dark Screen 7 White Balance White & Black Pattern Remark Figure 1 Figure 2 Figure 3 Figure 4,5,6 Should be compliant Figure 7 with the spec. & Full White Fine Line Morie Pattern (Figure1) Specification Eliminate visual wavy noise. 16 gray levels sh should be distinguishable. Horizontal and Vertical position of video should be adjustable to be within the screen frame. Contrast of each R, G, B, color should be normal. The numbers of dead pixels should be Figure 7,8 compliant with the spec. The screen must have the pure white and black Figure 9 pattern, no other color. Gray Scale Pattern (Figure2) - 27 – ViewSonic Corporation Confidential - Do Not Copy VG920 Horizontal & Vertical Thickness Pattern (Figure 3) G. Color Pattern (Figure 5) Full White Pattern (Figure 7) R. Color Pattern (Figure 4) B. Color Pattern (Figure 6) Dark Screen Pattern (Figure 8) - 28 – ViewSonic Corporation Confidential - Do Not Copy VG920 Black-White Pattern (Figure 9) 4.3 Function Test and Alignment Procedure All Modes Reset You should do “All Mode Reset” (Refer to Chapter III-3. Hot Keys for Function Controls) first. This action will allow you to erase all end-user’s settings and restore the factory defaults. Auto Image Adjust Please select and enter “Auto Image Adjust” function on Main Menu to see if it is workable. The “Auto Image Adjust” function is aimed to offer a better screen quality by built-in ASIC. For optimum screen quality, the user has to adjust each function manually. Firmware Test Pattern: Burn In Mode (Refer to Chapter III-3. Hot Keys for Function Controls) Make sure the F/W is the latest version. DDC Test Pattern: EDID program Make sure it can pass test program. Fine Tune and Sharpness Test Signal: 1280*1024@60Hz Test Pattern: Line Moire Pattern Check and see if the image has noise and focus performs well. Eliminate visual line bar. If not, readjust by the following steps: (a)Select and enter “Fine Tune” function on “Manual Image Adjust” to adjust the image to eliminate visual wavy noise. (b)Then, select and enter “Sharpness” function to adjust the clarity and focus of the screen image. Boundary Test Signal: 1280*1024@60Hz Test Pattern: Horizontal & Vertical Line Thickness Pattern Check and see if the image boundary is within the screen frame. If not, readjust by the following steps: (a)Select and enter “Manual Image Adjust” function on OSD Main Menu. - 29 – ViewSonic Corporation Confidential - Do Not Copy VG920 (b)Then, select and enter “Horizontal Size” or “Horizontal/Vertical Position” function to adjust the video boundary to be full scanned and within screen frame. White Balance Test Signal: 640*480@60Hz Test Pattern: White and Black Pattern 1.5.8 R, G, B, Colors Contrast Test Signal: 1280*1024@60Hz Test Pattern: R, G, B, Color Intensities Pattern and 16 Gray Scale Pattern - Check and see if each color is normal and distinguishable. - If not, please return the unit to repair area. Screen Uniformity and Flicker Test Signal: 1280*1024@60Hz Test Pattern: Full White Pattern - Check and see if it is in normal condition. 1.5.10 Dead Pixel and Line Test Signal: 1280*1024@60Hz Test Pattern: Dark and White Screen Pattern - Check and see if there are dead pixels on LCD panel with shadow gauge and filter film. - The total numbers and distance of dead pixels should be compliant with the spec. Mura Test Pattern: White, RGB, Black, & Grey Test Tool: 10% ND Filter - Check if the Mura can pass 10% ND Filter. Audio Test Signal: Voice signal (optional, depend on model) Test Pattern: liberty - Make sure there is audio output. - Make sure that audio function (volume 80%) is working without noise and resonance. - Make sure that the sound of right and left speakers are in balance. Check for Secondary Display Modes Test Signal: Analog: 640*350@70Hz; 640*480@60/67/72/75/85Hz; 720*400@70Hz; 800*600@56/60/72/75/85Hz; 832*624@75Hz, 1024*768@60/70/72/75/85Hz; 1280*1024@60/75Hz Digital: 640*350@70Hz; 640*480@60/72/75/85Hz; 720*400@70Hz; 800*600@56/60/72/75/85Hz; 1024*768@60/70/72/75/85Hz; 1152*870@75Hz, 1280*720@60Hz, 1280*1024@60Hz - Normally when the primary mode 1280*1024@60Hz is well adjusted and compliant with the specification, the secondary display modes will also be compliant with the spec. But we still have to check with the general test pattern to make sure every secondary is compliant with the specification. - 30 – ViewSonic Corporation Confidential - Do Not Copy VG920 All Modes Reset After final QC step, we have to erase all saved changes again and restore the factory defaults. You should do “All Mode Reset” again. Power Off Monitor Turn off the monitor by pressing “Power” button. 5.6 Firmware Upgrade Procedure When you receive the returned monitor, please check whether the firmware version is the latest. If not, please do the following procedures to upgrade it to the latest version. 1 Equipment Needed - VG720/VG920 Monitor - Fixture for Firmware Upgrade - Power Adapter (P/N: 47.58201.001) *1 for Fixture - VGA Cable (P/N: 42.59901.003) *1(Pin 4, 11 should be connected to GND) - PC (Personal Computer) - LPT Cable (P/N: 42.59906.001) *1 - Firmware Upgrade Program - One additional monitor for checking the program execution - 31 – ViewSonic Corporation Confidential - Do Not Copy VG920 2 Setup Procedure 2.1 Connect P2 of Fixture with printer port of PC by LPT Cable. 2.2 Connect P1 of Fixture with VG720/VG920 Monitor by VGA Cable. 2.3 Plug Power Adapter to Fixture. 2.4 Connect Power Cord to VG720/VG920 Monitor. 2.5 Connect P3 to the Signal Generator (eg.Chroma2326) for verifying it after the operation being completed. 2.6 Connect PC to the additional monitor. JP1:to Power Adapter P1:to VGA Cable P3:to Signal Generator P2:to LPT Cable 3 Firmware Upgrade Procedure Step 1. Let VG720/VG920 set to be connected with AC cable and VGA cable. Step 2.Execute the MSstar ISP tool. - 32 – ViewSonic Corporation Confidential - Do Not Copy VG920 Step 3. Click “Config” button . Select the Port Type: LPT1 and the Base Addr : 0x378 on “Communication Setting” flame,and then the Speed: 47 on “E2PROM Device Setting” flame Step 4. Click “Connect” button. (On this step, if the connection is successful, the “Entry ISP Mode” Dialog will be showed. If not, the error dialog will be done.) Step 5. Click “Device” button. Select the “PMC25LV010” or “SST25VF010” viewed on your set. - 33 – ViewSonic Corporation Confidential - Do Not Copy VG920 Step 6. Click “Read” button. Select the object bincode on your corresponding directory. Step 7. Click “Auto” button. Execute the flashing action by clicking the “Run” button. Step 8. If the flashing F/W has been completed, “Ok” message will be showed on the right TextBox. - 34 – ViewSonic Corporation Confidential - Do Not Copy VG920 Step 9. Unplug and replug power cord of VG720/VG920 set and then check the OSD operation and image on srceen. Step 10. At last, do “Memory Recall.” 3.2 Setup Procedure 3.2.1 Connect P2 and P4 of Fixture with VGA ports of VG720 VG720/VG920by VGA Cable. 3.2.2 Connect P3 of Fixture with DVI port of VG720 by DVI-DVI Cable. 3.2.3 Connect P1 of Fixture with Printer port of PC by LPT Cable. 3.2.4 Plug Power Adapter to Fixture. 3.2.5 Connect Power Cord to VG720/VG920 Monitor. 3.2.6 Connect PC to the additional monitor. JP1: Power Adapter P3:DVI-DVI Cable P2: VGA Cable P1:to LTP Cable - 35 – ViewSonic Corporation Confidential - Do Not Copy VG920 3.3 DDC Key In Procedure Sep1.Select and execute DDc Key In program - 36 – ViewSonic Corporation Confidential - Do Not Copy VG920 Sep2:Inpute the S/N and execute “Enter” - 37 – ViewSonic Corporation Confidential - Do Not Copy VG920 - 38 – ViewSonic Corporation Confidential - Do Not Copy VG920 Sep3:Key the “Enter” and write the data - 39 – ViewSonic Corporation Confidential - Do Not Copy VG920 Sep4:If ddc program OK and show “data compare ok” - 40 – ViewSonic Corporation Confidential - Do Not Copy VG920 5.7 Packing For Shipping - 41 – ViewSonic Corporation Confidential - Do Not Copy VG920 Packing Part List ITEM 1 DESCRIPITON PART NUMBER Q’TY CARTON C 44G3943709 1A 1 HANDLE1 50G 600 2 1 HANDLE2 50G 600 3 1 3 PE BAG 45G 1 4 CD MANUAL 70G1701709 4B 1 5 QSG 41G7801709 4A 1 6 EPE COVER 45G 88609 4 1 7 MONITOR T980KA6HKGVWABP 1 8 EPE COVER 45G 88609800 1 9 PE BAG 45G 88626 1 1 10 EPS 11 AUDIO CABLE 89G 173 56507 1 12 POWER CORD 89G402A18N LS 1 13 SIGNAL CABLE 89G 728GAA902 1 14 DVI CABLE 89G1748GAA 11 1 2 76 28 V3 44G3943 1 1 44G3943 2 1 - 42 – ViewSonic Corporation Confidential - Do Not Copy VG920 6. Troubleshooting Flow Chart - 43 – ViewSonic Corporation Confidential - Do Not Copy VG920 7. Recommended Spare Part List VX920 BOM list(T980KA6HKGVWABP) Item 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 ViewSonic P/N Ref. P/N AUPC980A8P CBPC980KA6VWP KEPC980KB8SMTP PWPC1942AUV1P 7G 1 S 15 11G 800 2 11G6054 1 12G 434 2 12G 437 1 12G8000 2 15G8004 1 15G8235 1 15G8237 1 15G8239 1 19G6014 2 20G 036 1 23G3178709 4A 23G3178709 6A 33G4915 KR L 33G4916 1 33G4917 KR X 33G4918 KR X 34G1687AKR B 34G1688 KR B 34G1689AKD B 34G1690 KD B 34G1691 KR B 34G1692 KR B 34G1693 KR B 34G1694 KD B 34G1695 KD B 34G1696 KR B 34G1697 KR X 37G 547 1 40G 190709 1B 40G 45760819A 40G 459709 1B Description Location Universal number# AUPC BOARD CONVERSION BOARD KEY BOARD POWER BOARD WOODEN PALLET SPACER SUPPORT (RCM-5) PIN CONNECTOR RUBBER PAD THER MAL PAD FOOT PAD ROLLER PIN MAIN FRAME VESA COVER Kensington bracket 塑料打包固定夹 BASE DIE CASTING VSC17-LCD FRONT LOGO BIRD LOGO (E015-006) FUNCTION BUTTON POWER LENS ROLLER CABLE CLIP BEZEL REAR COVER COSMETIC TOP COSMETIC BOTTOM VESA COVER STAND FRONT STAND REAR BASE FRONT TOP BASE FRONT BOTTOM BASE SWIVEL COVER HINGE ASS'Y ID LABEL 机种标签 CARTON LABEL Q'ty 1 1 1 1 0.025 1 4 4 1 2 4 1 1 1 0.2 1 1 1 1 0 4 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 - 44 – ViewSonic Corporation Confidential - Do Not Copy VG920 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 40G 459709 2B 40G 459709 4A 40G 459709 5A 40G 581 26704 40G 58162435A 40G 58170918D 40G457B709 1A 40G581B709 3A 41G7801709 4A 44G3231 15 44G3943 1 44G3943 2 44G6002 S 12 44G6002 S 13 44G9003210 45G 76 28 V3 45G 77 3 45G 88609 4 45G 88609800 45G 88626 1 50G 600 1 W 50G 600 2 50G 600 3 52G 1185 24 52G 1216 A 52G 2191 D 52G6019 1 52G6020 5 52G6022 20 52G6025 11907 52G6025 11909 70G1701709 4B 78G 334 5 85G 713 1 89G 173 56507 89G 728GAA902 89G 728HAA902 89G1748GAA 11 89G1748HAA 11 89G1748LAA 11 S/N LABEL H/V WARNING LABEL HI-POT LABEL FOR 17-LCD 唛头纸 FOR CARTON/PALLET MANUAL P/N LABEL PALLET LABEL Hg LABEL 8ms STICKER QSG EVA WASHER EPS(L) EPS(R) PAPER PLATE PAPER PLATE CORNER PAPER PE BAG TRANSPARENT SHEET EPE COVER EPE BAG PE BAG FOR MONITOR 白色机用打包带 HANDLE1 HANDLE2 TAPE 铝箔胶带 美纹胶带 YELLOW TAPE PROTECT FILM SMALL TAPE Mylar sheet top MYLAR BOTTOM CD MANUAL LCD 内置无源喇叭箱(8 欧腜 MAIN SHIELD AUDIO CABLE SIGNAL CABLE SIGNAL CABLE DVI CABLE DVI SIGNAL CABLE DVI CABLE 1 1 1 0.01 1.05 0.25 1 1 1 1 1 1 0.025 0.025 0.1 1 173 1 1 1 74 1 1 65 1 75 5 1 100 1 1 1 1 1 1 1 0 1 0 0 - 45 – ViewSonic Corporation Confidential - Do Not Copy VG920 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 89G402A18N IS 89G402A18N LS 95G8014 16921 95G8018 30915 M1G 130 6120 M1G 130 6120 M1G 140 8120 M1G 140 10120 M1G 330 4128 M1G1030 6225 M1G1140 6128 M1G1730 6128 M1G1730 6128 M1G1730 6128 M1G2940 10225 Q1G 130 6 47 Q1G 130 8120 Q1G 130 12120 Q1G 330 6120 Q1G 330 6120 Q1G 330 8120 Q1G1030 10120 Q1G1030 12120 750GLU90N45 12 C 44G3943709 1A AUPC980A8P AUPC980A8SMTP 33G3802 4H 33G802414C H 51G6002 1 67G215B471 3H 67G305V100 7N GP 67G305V100 7N GP 67G305V100 7N GP 67G305V100 7N GP 88G 30214K 90G6119 1 AUPC980A8SMTP 56G 616 6 61L0603000 POWER CABLE POWER CORD WIRE HARNESS 16P-11P 3 WIRE HARNESS SCREW SCREW SCREW M4X8 SCREW M4X10 SCREW SCREW M3X6 SCREW SCREW SCREW SCREW M4*10 SCREW SCREW SCREW SCREW M3X6MM SCREW M3X6MM SCREW M3*10 M3*12 M190EN04 V5A(SZ)19" LCD CARTON AUPC BOARD AUPC BOARD SMT WAFER 4P RIGHT ANGLE WAFER 导热胶 LOW ESR CAP 470UF 16V 8 10UF50V KME50VB10-M-TP5 10UF50V KME50VB10-M-TP5 10UF50V KME50VB10-M-TP5 10UF50V KME50VB10-M-TP5 PHONE JACK 5PIN HEATSINK AUPC BOARD SMT ID TPA3003D2PF BRG4 TQF CHIPR 0OHM +-5% 1/10W 0 1 1 1 4 2 4 5 2 1 1 4 3 2 4 3 3 1 4 2 2 4 2 1 1 CN603 CN602 C620 C601 C605 C617 C625 CN601 1 1 1 0.2 1 1 1 1 1 1 1 U601 R602 1 1 - 46 – ViewSonic Corporation Confidential - Do Not Copy VG920 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 61L0603102 61L0603103 61L0603103 61L0603103 61L0603124 61L0603124 61L0603393 61L0603393 65G0603101 65G0603101 65G0603102 65G0603102 65G0603102 65G0603102 65G0603102 65G0603102 65G0603103 65G0603103 65G0603103 65G0603103 65G0603104 65G0603104 65G0603104 65G0603104 65G0603104 65G0603104 65G0603105 65G0603105 65G0603105 65G0603105 65G0603105 65G0603105 65G0603105 65G0603105 65G0603221 71G 56G301 71G 56G301 71G 56G301 71G 56G301 71G 57G301 31 31 32 32 32 32 32 32 32 32 32 32 12 12 12 12 12 12 12 12 12 12 12 12 12 12 32 EA EA EA EA EA CHIPR 1KOHM +-5% 1/10W CHIPR 10KOHM+-5% 1/10W CHIPR 10KOHM+-5% 1/10W CHIPR 10KOHM+-5% 1/10W CHIP 120KOHM 1/10W CHIP 120KOHM 1/10W 39K OHM 1/10W 39K OHM 1/10W CHIP 100P 50V NPO CHIP 100P 50V NPO CHIP 1000PF 50 X7R CHIP 1000PF 50 X7R CHIP 1000PF 50 X7R CHIP 1000PF 50 X7R CHIP 1000PF 50 X7R CHIP 1000PF 50 X7R 0.01UF 50V X7R 0.01UF 50V X7R 0.01UF 50V X7R 0.01UF 50V X7R MLCC MLCC MLCC MLCC MLCC MLCC CHIP CAP 1UF. CHIP CAP 1UF. CHIP CAP 1UF. CHIP CAP 1UF. CHIP CAP 1UF. CHIP CAP 1UF. CHIP CAP 1UF. CHIP CAP 1UF. 220PF/50V X7R CHIP BEAD CHIP BEAD CHIP BEAD CHIP BEAD CHIP BEAD 600 OHM 1206 R608 R601 R609 R610 R604 R607 R611 R612 C612 C615 C602 C603 C604 C630 C631 C632 C607 C608 C626 C629 C606 C609 C618 C621 C627 C628 C610 C611 C613 C614 C616 C619 C623 C624 C622 FB602 FB604 FB610 FB612 FB605 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 - 47 – ViewSonic Corporation Confidential - Do Not Copy VG920 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 71G 57G301 EA 71G 57G601 71G 57G601 71G 57G601 71G 57G601 715G1566 1 CBPC980KA6VWP AIC980KA6VWP 33G801714H H 33G801724A H 33G8027 12 33G8027 16 40G 45762412B 51G6002 1 67G215L101 4N 67G215L101 4N 67G215L101 4N 67G309V100 3 67G309V100 3 67G309V109 3 67G309V479 3 67G309V479 3 88G 35315F H 88G 35315F HJ 88G 35424F H 90G6250 1 GP 93G 22 53 AIC980KA6VWP 56G 562108 56G 563 7 56G 643 6 56G1133 34 56G1133 34 56G1133 63AA2 56G1133 74AA2 56G113356A 57G 417 4 57G 417 4 57G 417 4 57G 417 4 CHIP BEAD 600 OHM 1206 贴片磁珠 贴片磁珠 贴片磁珠 贴片磁珠 AUDIO CONVERSION BOARD MAIN BOARD PIN2*7 PIN 24P 2.0MM RIGHT ANG WAFER 2*6P 2.0MM R/A WAFER 16PIN 2.0MM DIP CBPC LABEL 导热胶 LOW ESR EC 100UF 25V NC LOW ESR EC 100UF 25V NC LOW ESR EC 100UF 25V NC Electrolytic CAP Electrolytic CAP 1UF +-20% 16V 4.7UF +-20% 16V 4.7UF +-20% 16V D-SUB 15PIN D-SUB 15PIN DVID CONN 24P FEMALE 90 散热片 CRYSTAL 14.31818MHZ HCMAIN BOARD TSUM56AK-LF PQFP-100 AIC1084-33PM TO-263 IC MICROPROCESSOR MAX81 IC M24C02-WMN6TP IC M24C02-WMN6TP PM25LV010-25SCE SST25VF010A-33-4C-SAE S 24LC16B/SNG SOIC-8PIN PMBS3904/PLILIPS PMBS3904/PLILIPS PMBS3904/PLILIPS PMBS3904/PLILIPS FB606 FB601 FB607 FB608 FB609 1 1 1 1 1 1 X401 1 1 1 1 1 1.03 0.2 1 1 1 1 1 1 1 1 1 0 1 1 1 U401 U702 U406 U404 U405 U402 U402 U403 Q402 Q404 Q701 Q703 1 1 1 1 1 1 0 1 1 1 1 1 CN404 CN101 CN701 CN403 C707 C710 C712 C408 C717 C705 C403 C702 CN405 CN405 CN406 - 48 – ViewSonic Corporation Confidential - Do Not Copy VG920 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 57G 417 4 57G 417 6 57G 417 6 57G 417 17 T 57G 763 1 61L0603000 61L0603000 61L0603000 61L0603000 61L0603000 61L0603000 61L0603000 61L0603000 61L0603000 61L0603100 61L0603100 61L0603100 61L0603100 61L0603100 61L0603100 61L0603100 61L0603100 61L0603100 1F 61L0603100 1F 61L0603101 61L0603101 61L0603101 61L0603101 61L0603101 61L0603101 61L0603101 61L0603101 61L0603101 61L0603101 61L0603101 61L0603101 61L0603101 61L0603101 61L0603101 61L0603101 PMBS3904/PLILIPS PMBS3906 PNP PMBS3906 PNP PZT2907A SOT-223 AO3401L CHIPR 0OHM +-5% 1/10W CHIPR 0OHM +-5% 1/10W CHIPR 0OHM +-5% 1/10W CHIPR 0OHM +-5% 1/10W CHIPR 0OHM +-5% 1/10W CHIPR 0OHM +-5% 1/10W CHIPR 0OHM +-5% 1/10W CHIPR 0OHM +-5% 1/10W CHIPR 0OHM +-5% 1/10W CHIPR 10 OHM 1/10W CHIPR 10 OHM 1/10W CHIPR 10 OHM 1/10W CHIPR 10 OHM 1/10W CHIPR 10 OHM 1/10W CHIPR 10 OHM 1/10W CHIPR 10 OHM 1/10W CHIPR 10 OHM 1/10W CHIP 1KOHM 1/10W 1% CHIP 1KOHM 1/10W 1% CHIPR 100OHM +-5% 1/10W CHIPR 100OHM +-5% 1/10W CHIPR 100OHM +-5% 1/10W CHIPR 100OHM +-5% 1/10W CHIPR 100OHM +-5% 1/10W CHIPR 100OHM +-5% 1/10W CHIPR 100OHM +-5% 1/10W CHIPR 100OHM +-5% 1/10W CHIPR 100OHM +-5% 1/10W CHIPR 100OHM +-5% 1/10W CHIPR 100OHM +-5% 1/10W CHIPR 100OHM +-5% 1/10W CHIPR 100OHM +-5% 1/10W CHIPR 100OHM +-5% 1/10W CHIPR 100OHM +-5% 1/10W CHIPR 100OHM +-5% 1/10W Q706 Q401 Q403 Q702 Q704 FB410 FB411 FB412 R419 R421 R431 R432 R720 R721 R462 R463 R464 R465 R466 R467 R468 R469 R478 R479 R411 R418 R420 R427 R428 R429 R441 R442 R443 R445 R453 R454 R455 R456 R458 R704 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 - 49 – ViewSonic Corporation Confidential - Do Not Copy VG920 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 61L0603102 61L0603102 61L0603102 61L0603102 61L0603102 61L0603102 61L0603102 61L0603103 61L0603103 61L0603103 61L0603103 61L0603103 61L0603103 61L0603103 61L0603103 61L0603103 61L0603103 61L0603103 61L0603103 61L0603103 61L0603103 61L0603103 61L0603103 61L0603103 61L0603103 61L0603103 61L0603103 61L0603103 61L0603103 61L0603103 61L0603103 61L0603103 61L0603121 61L0603121 61L0603150 1F 61L0603202 61L0603203 61L0603222 61L0603222 61L0603223 CHIPR 1KOHM +-5% 1/10W CHIPR 1KOHM +-5% 1/10W CHIPR 1KOHM +-5% 1/10W CHIPR 1KOHM +-5% 1/10W CHIPR 1KOHM +-5% 1/10W CHIPR 1KOHM +-5% 1/10W CHIPR 1KOHM +-5% 1/10W CHIPR 10KOHM+-5% 1/10W CHIPR 10KOHM+-5% 1/10W CHIPR 10KOHM+-5% 1/10W CHIPR 10KOHM+-5% 1/10W CHIPR 10KOHM+-5% 1/10W CHIPR 10KOHM+-5% 1/10W CHIPR 10KOHM+-5% 1/10W CHIPR 10KOHM+-5% 1/10W CHIPR 10KOHM+-5% 1/10W CHIPR 10KOHM+-5% 1/10W CHIPR 10KOHM+-5% 1/10W CHIPR 10KOHM+-5% 1/10W CHIPR 10KOHM+-5% 1/10W CHIPR 10KOHM+-5% 1/10W CHIPR 10KOHM+-5% 1/10W CHIPR 10KOHM+-5% 1/10W CHIPR 10KOHM+-5% 1/10W CHIPR 10KOHM+-5% 1/10W CHIPR 10KOHM+-5% 1/10W CHIPR 10KOHM+-5% 1/10W CHIPR 10KOHM+-5% 1/10W CHIPR 10KOHM+-5% 1/10W CHIPR 10KOHM+-5% 1/10W CHIPR 10KOHM+-5% 1/10W CHIPR 10KOHM+-5% 1/10W CHIPR 120 OHM 1/10W CHIPR 120 OHM 1/10W CHIP 1.5KOHM 1/16W 1% CHIPR 2KOHM+-5%1/10W CHIPR 20KOHM +-5% 1/10W CHIPR 2.2KOHM+-5%1/10W CHIPR 2.2KOHM+-5%1/10W CHIPR 22K OHM +-5% 1/10 R430 R446 R447 R470 R476 R477 R701 R406 R408 R412 R413 R415 R416 R424 R425 R426 R450 R451 R452 R457 R459 R460 R461 R471 R484 R485 R487 R708 R711 R714 R717 R727 R409 R414 R480 R703 R417 R448 R449 R405 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 - 50 – ViewSonic Corporation Confidential - Do Not Copy VG920 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 61L0603390 61L0603392 61L0603392 61L0603471 61L0603472 61L0603472 61L0603472 61L0603472 61L0603472 61L0603472 61L0603510 61L0603513 61L0603560 61L0603560 61L0603560 61L0603750 61L0603750 61L0603750 65G0603104 65G0603104 65G0603104 65G0603104 65G0603104 65G0603104 65G0603104 65G0603104 65G0603104 65G0603104 65G0603104 65G0603104 65G0603104 65G0603104 65G0603104 65G0603104 65G0603104 65G0603104 65G0603104 65G0603104 65G0603104 65G0603104 0F 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 390OHM +-1% CHIP 3.9K OHM 1/10W CHIP 3.9K OHM 1/10W CHIPR 470OHM+-5%1/10W CHIP 4.7KOHM +-5% 1/10 CHIP 4.7KOHM +-5% 1/10 CHIP 4.7KOHM +-5% 1/10 CHIP 4.7KOHM +-5% 1/10 CHIP 4.7KOHM +-5% 1/10 CHIP 4.7KOHM +-5% 1/10 CHIP 51OHM 5% 1/10W CHIP 51K OHM CHIPR 56 OHM +-5% 1/10W CHIPR 56 OHM +-5% 1/10W CHIPR 56 OHM +-5% 1/10W CHIPR 75OHM+-5%1/10W CHIPR 75OHM+-5%1/10W CHIPR 75OHM+-5%1/10W CHIP 0.1UF 50V X7R CHIP 0.1UF 50V X7R CHIP 0.1UF 50V X7R CHIP 0.1UF 50V X7R CHIP 0.1UF 50V X7R CHIP 0.1UF 50V X7R CHIP 0.1UF 50V X7R CHIP 0.1UF 50V X7R CHIP 0.1UF 50V X7R CHIP 0.1UF 50V X7R CHIP 0.1UF 50V X7R CHIP 0.1UF 50V X7R CHIP 0.1UF 50V X7R CHIP 0.1UF 50V X7R CHIP 0.1UF 50V X7R CHIP 0.1UF 50V X7R CHIP 0.1UF 50V X7R CHIP 0.1UF 50V X7R CHIP 0.1UF 50V X7R CHIP 0.1UF 50V X7R CHIP 0.1UF 50V X7R CHIP 0.1UF 50V X7R R403 R474 R475 R437 R422 R423 R705 R707 R712 R725 R702 R723 R434 R435 R436 R438 R439 R440 C401 C404 C405 C406 C407 C409 C410 C411 C412 C413 C414 C415 C416 C417 C419 C420 C422 C424 C425 C426 C427 C428 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 - 51 – ViewSonic Corporation Confidential - Do Not Copy VG920 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 65G0603104 65G0603104 65G0603104 65G0603104 65G0603104 65G0603104 65G0603104 65G0603104 65G0603104 65G0603104 65G0603104 65G0603104 65G0603104 65G0603104 65G0603104 65G0603104 65G0603104 65G0603104 65G0603104 65G0603104 65G0603104 65G0603104 65G0603104 65G0603220 65G0603220 65G0603221 65G0603330 65G0603473 65G0603473 65G0603473 65G0603473 65G0603473 65G0603473 65G0603473 65G0805105 71G 56Z601 71G 56Z601 71G 56Z601 71G 56Z601 71G 56Z601 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 37 CHIP 0.1UF 50V X7R CHIP 0.1UF 50V X7R CHIP 0.1UF 50V X7R CHIP 0.1UF 50V X7R CHIP 0.1UF 50V X7R CHIP 0.1UF 50V X7R CHIP 0.1UF 50V X7R CHIP 0.1UF 50V X7R CHIP 0.1UF 50V X7R CHIP 0.1UF 50V X7R CHIP 0.1UF 50V X7R CHIP 0.1UF 50V X7R CHIP 0.1UF 50V X7R CHIP 0.1UF 50V X7R CHIP 0.1UF 50V X7R CHIP 0.1UF 50V X7R CHIP 0.1UF 50V X7R CHIP 0.1UF 50V X7R CHIP 0.1UF 50V X7R CHIP 0.1UF 50V X7R CHIP 0.1UF 50V X7R CHIP 0.1UF 50V X7R CHIP 0.1UF 50V X7R Chip Cap 22PF Chip Cap 22PF 220PF/50V X7R CHIP 33PF 50V NPO CHIP 47NF 50V X7R CHIP 47NF 50V X7R CHIP 47NF 50V X7R CHIP 47NF 50V X7R CHIP 47NF 50V X7R CHIP 47NF 50V X7R CHIP 47NF 50V X7R CHIP 1UF 50V Y5V 2.0X1.2 100M=600OHM 2.0X1.2 100M=600OHM 2.0X1.2 100M=600OHM 2.0X1.2 100M=600OHM 2.0X1.2 100M=600OHM C429 C430 C439 C440 C441 C444 C445 C446 C447 C448 C449 C450 C451 C452 C453 C454 C706 C709 C711 C713 C714 C715 C718 C421 C423 C443 C442 C432 C433 C434 C435 C436 C437 C438 C708 FB401 FB402 FB403 FB404 FB405 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 - 52 – ViewSonic Corporation Confidential - Do Not Copy VG920 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 71G 71G 71G 71G 71G 71G 71G 71G 71G 71G 71G 71G 93G 93G 93G 93G 93G 93G 93G 93G 93G 93G 93G 93G 93G 93G 93G 93G 93G 93G 93G 93G 93G 93G 93G 93G 93G 93G 93G 93G 56Z601 56Z601 56Z601 56Z601 M 56Z601 M 56Z601 M 56Z601 M 56Z601 M 56Z601 M 56Z601 M 56Z601 M 59B121 39147SEM 39147SEM 39147SEM 39147SEM 39149 39149 39149 39149 39149 39149 64 42 P 64 42 P 6432P 6432P 6433P 6433P 6433P 6433P 6433P 6433P 6433P 6433P 6433P 6433P 6433P 39S 45 T 39S 45 T 39S 45 T 2.0X1.2 100M=600OHM 2.0X1.2 100M=600OHM 2.0X1.2 100M=600OHM CHIP BEAD 0805 600OHM CHIP BEAD 0805 600OHM CHIP BEAD 0805 600OHM CHIP BEAD 0805 600OHM CHIP BEAD 0805 600OHM CHIP BEAD 0805 600OHM CHIP BEAD 0805 600OHM CHIP BEAD 0805 600OHM 贴片磁珠 ZMM5V6 ZMM5V6 ZMM5V6 ZMM5V6 ZENER MLL5232B BY FULL ZENER MLL5232B BY FULL ZENER MLL5232B BY FULL ZENER MLL5232B BY FULL ZENER MLL5232B BY FULL ZENER MLL5232B BY FULL BAV70 DIODE BAV70 DIODE LL4148 MINI-MELF/LL-34 LL4148 MINI-MELF/LL-34 BAV99 SOT-23 BAV99 SOT-23 BAV99 SOT-23 BAV99 SOT-23 BAV99 SOT-23 BAV99 SOT-23 BAV99 SOT-23 BAV99 SOT-23 BAV99 SOT-23 BAV99 SOT-23 BAV99 SOT-23 RLZ36B ZENER DIODE RLZ36B ZENER DIODE RLZ36B ZENER DIODE FB406 FB407 FB408 FB401 FB402 FB403 FB404 FB405 FB406 FB407 FB408 FB409 D414 D415 D416 D426 D406 D408 D409 D410 D411 D412 D407 D413 D701 D702 D403 D404 D405 D417 D418 D419 D420 D421 D422 D423 D424 D401 D402 D425 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 - 53 – ViewSonic Corporation Confidential - Do Not Copy VG920 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 93G1004 4 715G1558 1 2 KEPC980KB8SMTP 33G803411C 77G 604 2 TO 77G 604 2 TO 77G 604 2 TO 77G 604 2 TO 77G 604 2 TO 77G 604 2 TO 77G 604 2 TO 77G 604 2 TO 81G 14501 KT 715G1602 1 PWPC1942AUV1P PW1942AUV1SMTP 33G8021 2D U 33G8021 2D U 33G8021 2D U 33G8021 2D U 33G8021 2D AC 33G8021 2D AC 33G8021 2D AC 33G8021 2D AC 33G8029 3A 40G 45762412B 51G 6 4503 56G 139 3 56G 139 3A 61G 58080 WT 61G152M398 64 63G 10747410S 63G210J3342B2 63G211J334 AB 65G 2K152 5A 65G 3J1206EM 65G 3J1206EM 65G 3J1206EM 65G 3J1206EM 65G 3J1206ET SCHOTTKY DIODE 1A 40V S MAIN BOARD KEY BOARD WAFER 1.0MM SMT 11P TACT SWITCH TACT SWITCH TACT SWITCH TACT SWITCH TACT SWITCH TACT SWITCH TACT SWITCH TACT SWITCH KTL-HKBGE33B-TRB KEPC POWER BOARD MAIN BOARD FOR SMT CON.2PR/A CON.2PR/A CON.2PR/A CON.2PR/A WAFER WAFER WAFER WAFER WAFER 3.96MM CBPC LABEL RTV 胶 PC123FY2 BY SHARP PC123Y22FZOF NTCR RES. 0.47UF +-10% 250VAC 0.33uF 250V PMS TAIYANG 0.33UF 5% 160V 1500PE 10% Y5P 2KV 12PF 5% SL 3KV MURATA 12PF 5% SL 3KV MURATA 12PF 5% SL 3KV MURATA 12PF 5% SL 3KV MURATA 12PF 5% SL 3KV TDK D704 1 1 CN001 SW001 SW002 SW003 SW004 SW005 SW006 SW007 SW008 LED001 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 1 1 2 0 1 1 1 1 0 1 1 1 1 1 1 0 CN201 CN202 CN203 CN204 CN201 CN202 CN203 CN204 CN901 IC902 IC902 NR901 R918 C903 C221 C221 C905 C211 C212 C213 C214 C211 - 54 – ViewSonic Corporation Confidential - Do Not Copy VG920 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 65G 3J1206ET 65G 3J1206ET 65G 3J1206ET 65G305M1022BJ 65G305M1022BJ 65G305M1022EM 65G305M1022EM 65G306M1022BM 65G306M1022BP 65G306M2222BM 65G306M2222BP 67G215H102 3N 67G215L101 4N 67G215L102 3N 67G215L102 3R 67G215L102 4N 67G215L102 4N 67G215L102 4R 67G215L102 4R 67G215L470 4N 67G215L471 4N 67G215L471 4N 67G215L471 4R 67G215L471 4R 67G215P102 3K 67G215P102 4K 67G215P102 4K 67G215P471 3K 67G215P471 4K 67G215P471 4K 67G215S10115K 67G215S10115N 67G215V102 3N 67G215V102 3R 67G215Y1014KT 67G215Y4704KT 67G215Y471 3N 67G215Y4713NV 67G215Y4713RV 73G 174 64 L GP GP GP GP 12PF 5% SL 3KV TDK 12PF 5% SL 3KV TDK 12PF 5% SL 3KV TDK 1000PF Y2 400V 20% BY J 1000PF Y2 400V 20% BY J 1000pF Y2 250V 20% BY M 1000pF Y2 250V 20% BY M Y1.CAP.001UF 250VAC MUR 1000PF 400VAC/250VAC Y1 2200PF +-20% 250V AC 2200PF Y1 400 20% BY UK KY16VB1000M-1 10*20 LOW ESR EC 100UF 25V NC KY16VB1000M-1 10*20 LOW ESR 1000UF +-20% 16 LOW ESR 1000UF 25V LOW ESR 1000UF 25V 1000UF/25V 1000UF/25V 47UF/25V 470UF25V KY25VB470-M-L 470UF25V KY25VB470-M-L 470UF/25V 470UF/25V LOW ESR EC 1000UF 16V LOW ESR EC 1000UF 25V LOW ESR EC 1000UF 25V LOW ESR EC 470UF 16V LOW ESR EC 470UF 25V LOW ESR EC 470UF 25V LOW ESR EC 100uF 450V 1000/450PAG450VB100M-L KY10VB1000M-L10*16 LOW E.S.R 100UF +-20% 1 LOW ESR EC 100UF 25V LOW ESR EC 47UF 25V 470UF 16V KY16VB470M-L KY16VB470M-CC3 8*15MM LOW E.S.R 470UF +-20% 1 LINE FILTER LF-004057-1 C212 C213 C214 C901 C902 C901 C902 C935 C935 C900 C900 C924 C906 C924 C924 C923 C931 C923 C931 C909 C203 C925 C203 C925 C924 C923 C931 C926 C203 C925 C904 C904 C924 C924 C906 C909 C926 C926 C926 L902 0 0 0 0 0 1 1 1 0 1 0 0 1 0 1 0 0 1 1 1 0 0 1 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 1 - 55 – ViewSonic Corporation Confidential - Do Not Copy VG920 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 73G 174 64 LS 73G 174 64 YS 73G 253 91 H 73G 253 91 H 73G 253 91 L 73G 253 91 L 73G 253 91 LS 73G 253 91 LS 73G 253166 L 73G 253166 LS 73G 253166 YS 73L 174 50 LH 73L 174 50LSH 80GL17T 28 DN 80GL17T 28 DN 80GL17T 28 YS 80GL17T 28 YS 80GL17T 29 L 80GL17T 29 V 80GL17T 29 LS 93G 50460 13 93G 50460502 93G1100 1052T 95G8014 12 35 705G 780 5720P 705G 780 5721P 705G 780 5722P 705G 780 5725P 705G 780 5733P 705G 980 88 A1 PW1942AUV1SMTP PW1942AUV1AIP 56G 379 54 56G 608 1 57G 417 4 57G 417 6 57G 417 12 T 57G 417 13 T 57G 760 4 57G 760 5 LINE FILTER LINE FILTER 阻流圈 阻流圈 CHOKE BY LI TA CHOKE BY LI TA CHOKE COIL CHOKE COIL CHOKE CHOCK COIL CHOKE LINE FILTER LINE FILTER TRANSFORMER TRANSFORMER X'FMR YAO SHENG X'FMR YAO SHENG X'FMR PT-004046 XFMR POWER TRANS KBP206G 2A 600V BRIDGE KBP206G 2A 800V BA159GPT DO-41 DIODE 1A WIRE HARRNESS D921/D922 ASS'Y Q901 ASS'Y R908 ASS'Y CN901 ASS'Y Q203 ASS'Y ASS'Y MAIN BOARD FOR SMT MAIN BOARD FOR AI NCP1203D60R2G SOIC-8 IC TL1451ACD SOIC-16 PMBS3904/PLILIPS PMBS3906 PNP 2N3904S-RTK/PS SOT-23 2N3906S-RTK/PS SOT-23 DTA144WKA DTC144WKA L902 L902 L903 L904 L903 L904 L903 L904 L201 L201 L201 L901 L901 PT201 PT202 PT201 PT202 T901 T901 T901 DB901 DB901 D901 CN902 0 0 0 0 1 1 0 0 0 0 1 1 0 0 0 1 1 1 0 0 1 0 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 1 1 IC901 IC201 Q204 Q205 Q204 Q205 Q202 Q201 - 56 – ViewSonic Corporation Confidential - Do Not Copy VG920 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 57G 760 4C 57G 760 5C 61L0805000 61L0805000 61L0805101 61L0805102 61L0805102 61L0805102 61L0805103 61L0805103 61L0805123 61L0805123 61L0805123 61L0805163 61L0805203 61L0805220 61L0805221 61L0805221 61L0805222 61L0805240 61L0805240 61L0805240 61L0805330 61L0805360 61L0805362 61L0805471 61L0805471 61L0805472 61L0805472 61L0805473 61L0805510 61L0805623 61L0805680 61L0805681 61L0805753 61L1206000 61L1206000 61L1206332 61L1206332 61L1206332 1F 1F 1F 2F 1F 2F RT1P44HC-T112-1 SC-59BY RT1N44HC-T112-1 SC-59BY Chip Resistors 0OHM Chip Resistors 0OHM CHIPR 100OHM+-5%1/8W CHIPR 1K OHM +-5% 1/8W CHIPR 1K OHM +-5% 1/8W CHIPR 1K OHM +-5% 1/8W CHIPR 10KOHM+-5%1/8W CHIPR 10KOHM+-5%1/8W CHIP 12K OHM 1/8W CHIP 12K OHM 1/8W CHIP 12K OHM 1/8W CHIP 16KOHM 1/8W CHIPR 20KOHM +-5% 1/8W CHIP 22OHM 5% 1/8W CHIPR 220 OHM +-5% 1/8W CHIPR 220 OHM +-5% 1/8W CHIPR 2.2K OHM +-5% 1/8 CHIPR 2.4KOHM +-1% 1/8W CHIPR 2.4KOHM +-1% 1/8W CHIPR 2.4KOHM +-1% 1/8W CHIP 33KOHM 1/8W/1% CHIP 3.6KOHM 1/8W 1% CHIP 3.6KOHM 1/8W CHIPR 470 OHM +-5% 1/8W CHIPR 470 OHM +-5% 1/8W CHIPR 4.7K OHM +-5% 1/8 CHIPR 4.7K OHM +-5% 1/8 CHIPR 47K OHM +-5% 1/8W CHIP 51KOHM 1/8W 1% CHIPR 62K OHM +-5% 1/8W CHIP 68OHM 1/8W CHIP 680OHM 1/8W 75K 1/8W CHIPR 0OHM+-5% 1/4W CHIPR 0OHM+-5% 1/4W CHIP 3.3KOHM 5% 1/4W CHIP 3.3KOHM 5% 1/4W CHIP 3.3KOHM 5% 1/4W Q202 Q201 R208 R209 R912 R924 R931 R932 R207 R917 R206 R214 R231 R205 R919 R915 R202 R916 R910 R201 R203 R933 R929 R930 R911 R204 R230 R213 R914 R210 R232 R212 R909 R229 R913 F902 R925 R903 R904 R905 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 - 57 – ViewSonic Corporation Confidential - Do Not Copy VG920 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 61L1206334 61L1206334 61L1206334 65G0805102 32 65G0805104 22 65G0805104 22 65G0805104 22 65G0805104 22 65G0805104 32 65G0805104 32 65G0805104 32 65G0805104 32 65G0805105 22 65G0805105 22 65G0805105 22 65G0805331 31 65G0805471 31 65G0805474 22 65G0805474 22 93G 60264 93G 6432S 93G 6432S 93G 6432S 93G 6432S 93G 6432V 93G 6432V 93G 6432V 93G 6432V 93G 39S 8 T 93G 39S 25 T 93G 39S 25 T 93G 39S 38 T 93G 39S 40 T 93G 39S 44 T 93G3004 4 PW1942AUV1AIP 6G 31502 71G 55 9 T 84G 56 1 93G1020 752T 330K 1/4W 330K 1/4W 330K 1/4W CHIP 1000PF 50V X7R 080 CHIP 0.1UF 25VX7R 0805 CHIP 0.1UF 25VX7R 0805 CHIP 0.1UF 25VX7R 0805 CHIP 0.1UF 25VX7R 0805 CHIP 0.1UF 50V X7R 0805 CHIP 0.1UF 50V X7R 0805 CHIP 0.1UF 50V X7R 0805 CHIP 0.1UF 50V X7R 0805 CHIP 1UF 25V X7R 0805 CHIP 1UF 25V X7R 0805 CHIP 1UF 25V X7R 0805 330PF 50V NPO CHIP 470PF 50V NPO CHIP 0.47UF 25V Y5V 080 CHIP 0.47UF 25V Y5V 080 B340A DO-214AC 1N4148W DIODE 1N4148W DIODE 1N4148W DIODE 1N4148W DIODE DIODE LL4148 GS08 DIODE LL4148 GS08 DIODE LL4148 GS08 DIODE LL4148 GS08 RLZ11B LLDS RLZ5.1B ROHM RLZ5.1B ROHM PTZ9.1B ROHM RLZ13B ROHM RLZ18B LLDS DIODE RB050L-40 MAIN BOARD FOR AI 1.5MM RIVET 铁氧体磁珠 FUSE 2A 250V BY WICKMAN UF4003PT DO-41 DIODE 1A R900 R901 R902 C912 C201 C202 C204 C208 C907 C927 C928 C929 C205 C210 C223 C207 C911 C222 C932 D201 D210 D903 D923 D924 D210 D903 D923 D924 ZD201 ZD902 ZD905 ZD903 ZD904 ZD901 D201 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 1 1 1 1 0 0 0 0 1 1 1 1 1 1 1 J914 F901 D902 16 1 1 1 - 58 – ViewSonic Corporation Confidential - Do Not Copy VG920 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 715G1492 1 95G 90 23 95G 90 23 95G 90 23 95G 90 23 95G 90 23 95G 90 23 95G 90 23 95G 90 23 95G 90 23 95G 90 23 95G 90 23 95G 90 23 95G 90 23 95G 90 23 95G 90 23 95G 90 23 95G 90 23 61G 17210252T 61G 17210252T 61G 17210252T 61G 17210252T 61G 17218252T 61G 17218252T 61G 17218252T 61G 17218252T 61G 17256152T 61G175L47052T 61G175L47052T 65G517K102 5T 67G 2151007NT 67G 215330 3T 67G215Y1007KT 93G 64 1152T 93G 64 1152T 93G 64 1152T 93G 64 1152T 93G 64 1152T 93G 64 1152T 93G 64 1152T PWPC TINCOATEDCOPPER TINCOATEDCOPPER TINCOATEDCOPPER TINCOATEDCOPPER TINCOATEDCOPPER TINCOATEDCOPPER TINCOATEDCOPPER TINCOATEDCOPPER TINCOATEDCOPPER TINCOATEDCOPPER TINCOATEDCOPPER TINCOATEDCOPPER TINCOATEDCOPPER TINCOATEDCOPPER TINCOATEDCOPPER TINCOATEDCOPPER TINCOATEDCOPPER 1KOHM 5% 1/4W 1KOHM 5% 1/4W 1KOHM 5% 1/4W 1KOHM 5% 1/4W 1.8KOHM 5% 1/4W 1.8KOHM 5% 1/4W 1.8KOHM 5% 1/4W 1.8KOHM 5% 1/4W 560OHM 5% 1/4W 47OHM +-5% 1/2W 47OHM +-5% 1/2W 1000PF 10% Y5P 500V 10UF 50V 33UF +-20% 50V 105℃ LO LOW ESR EC10UF 50V DIODE 1N4148 DO-35 DIODE 1N4148 DO-35 DIODE 1N4148 DO-35 DIODE 1N4148 DO-35 DIODE 1N4148 DO-35 DIODE 1N4148 DO-35 DIODE 1N4148 DO-35 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1 J900 J901 J902 J903 J906 J907 J908 J909 J910 J911 J912 J915 J916 J917 J918 J919 J921 R225 R226 R227 R228 R221 R222 R223 R224 R923 R921 R922 C922 C908 C209 C908 D202 D203 D204 D205 D206 D207 D208 - 59 – ViewSonic Corporation Confidential - Do Not Copy VG920 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 93G 64 1152T 56G 158 10 T 56G 158 12 57G 419 PP T 57G 420 PP T 65G517K102 5T 705G 780 5720P 51G 200 1 90G6240 2 93G 60236 93G 60238 93G 60239 93G1506 2 M1G1730 8128 705G 780 5721P 51G 200 1 57G 667 30 57G 724 11 90G6240 1 M1G1730 8128 705G 780 5722P 61G152M10458G 96G 29 6 705G 780 5725P 87G 501 7 RF GP 95G 900584 95G8021 3 11 96G 29 6 705G 780 5733P 15G6284 1 51G 200 1 57G 763 12 90G6259 1 AM1G1730 6128 705G 980 88 A1 51G 200 1 51G 200 1 57G 761 7 57G 761 7 90G6259 1 DIODE 1N4148 DO-35 IC AZ431AZ-AE1 TO-92 KIA431A-AT/P TO-92 IC 2PC945P TRANSISTOR 2PA733P 1000PF 10% Y5P 500V D921/D922 ASS'Y 散热油 HEAT SINK FMB-26L TO-220 DIODE DIODE 10A 150V FCH10A15 DIODE FME-210B TO-220 DIODE 15A 60V FMW-2156 SCREW Q901 ASS'Y 散热油 2SK2645-54MR TO-220F STP9NK65ZFP TO-220FP MO HEAT SINK SCREW R908 ASS'Y 100K OHM 5% 2W SHRINK TUBE UL/CSA CN901 ASS'Y AC SOCKET WIRE HARNESS HARNESS 100M SHRINK TUBE UL/CSA Q203 ASS'Y PLATE 散热油 AOU401L TO-251 HEAT SINK SCREW ASS'Y 散热油 散热油 TRANSISTOR KTD1691/P TRANSISTOR KTD1691/P HEAT SINK D209 IC903 IC903 Q903 Q902 C921 1 0 1 1 1 1 2 1 1 0 1 0 2 D922 D921 D921 D922 2 1 0 1 1 Q901 Q901 R908 1 1 1 1 1 1 Q203 1 0.2 1 1 1 2 2 1 1 1 Q206 Q207 - 60 – ViewSonic Corporation Confidential - Do Not Copy VG920 678 679 680 90G6259 M1G1730 M1G1730 1 8128 8128 HEAT SINK SCREW SCREW 1 1 1 - 61 – ViewSonic Corporation Confidential - Do Not Copy VG920 8. Exploded Diagram And Spare Parts List - 62 – ViewSonic Corporation Confidential - Do Not Copy VG920 - 63 – ViewSonic Corporation Confidential - Do Not Copy VG920 - 64 – ViewSonic Corporation Confidential - Do Not Copy VG920 9. Disassemble Process 9.1 Units Disassemble Process 9.1.1 Tools Glove Big cross screwdriver Small cross screwdriver Prize equipment or abandoned IC card Screw box Cushion Six angle sleeve spanner 9.1.2 Disassemble process 1、 Tide up the worktable, spread straight cushion, put the monitor on it, the front side adown.(Picture 1) 2、 Disassemble the 4 screws that fix the stand, remove the stand..(Picture 2, 3, 4) 3、 Disassemble the 2 screws of the back cover.(Picture 5) 4、 Use equipment or abandoned IC card to prize up the bezel through the bottom flute, as showed in the following the picture 6, and rip up the back cover downwards.( as showed in the following the picture 7,8) 5、 Disassemble the 6 screw M3*6MM through six angle sleeve spanner, showed in the following picture 9. 6、 Disassemble the 2 fixed screws in the shield, remove the shield as the direction arrowhead showed, refer to the following picture ,10. 7、 Disassemble the 5 screws and 4 pins of the PWPC board, remove the PWPC board.(symbolized the following picture 11 with red color) 8、 Disassemble the 3 screws and 3 pins of the main board, remove the main board. (symbolized the following picture 11 with blue color) 9、 Disassemble the 2 screws of the audio board, remove the audio board. (symbolized the following picture 11,12 with yellow color) 10、 Disassemble the 4 screws of the speaker, remove the speaker, refer to the following picture 13 11、 Disassemble the 4 fixed screws of the main frame, as showed in the following the picture 14 12、 Disassemble the connect pins of the key board, as showed in the following the picture 15. remove the bezel as the direction arrowhead showed, refer to the following picture ,16,17. 13、 Disassemble the 4 fixed screws of the panel, remove the main frame, as showed in the following the picture 18,19. Do not damage the cable of the panel. 14、 That’s all. The disassemble process of the unit is over. - 65 – ViewSonic Corporation Confidential - Do Not Copy VG920 9.1.3 Show pictures: (Picture 1) (Picture 2) (Picture 3) (Picture 4) (Picture 5) (Picture 6) (Picture 7) (Picture 8) - 66 – ViewSonic Corporation Confidential - Do Not Copy VG920 (Picture 9) (Picture 10) (Picture 11) (Picture 12) (Picture 13) - 67 – ViewSonic Corporation Confidential - Do Not Copy VG920 (Picture 14) (Picture 15) (Picture 16) (Picture 17) (Picture 18) (Picture 19) (Picture 20) - 68 – ViewSonic Corporation Confidential - Do Not Copy VG920 9.2 Stand A’ssy Disassemble Process (Picture 1) (Picture 2) (Picture 3) (Picture 4) (Picture 5) (Picture 6) - 69 – ViewSonic Corporation Confidential - Do Not Copy VG920 (Picture 7) (Picture 8) (Picture 9) (Picture 10) (Picture 11) (Pictures 12) - 70 – ViewSonic Corporation Confidential - Do Not Copy VG920 (Picture 13) (Picture 14) (Picture 15) (Picture 16) (Picture 17) (Picture 17) - 71 – ViewSonic Corporation Confidential - Do Not Copy VG920 10. Block Diagram Flash Scaler TSUM56AK (Include:ADC,OSD,MCU etc) - 72 – ViewSonic Corporation Confidential - Do Not Copy VG920 11. Schematic Diagram Power 9 9 9 NC TP 1 2 3 100uF/25V 5 4 8 7 6 8 7 6 5 4 5 4 5 4 9 TP 9 51 1/16W 5 4 5 4 TP C51 1UF 1UF R32 0 X Q4 X MMBT3904 R33 X 4.7K R29 X 1K C R31 4.7K 4.7K 4.7uF/16V C32 N.C 1uF D702 R708 0.1uF +5V 1 3 5 7 9 11 100 1/16W C710 + 0.1uF 100uF/25V BL_ON BL_ADJ +12V GND +5V GND 2 4 6 8 10 12 R710 NC R711 +5V 10K 1/16W C711 R712 0.1uF 4.7K 1/16W on_BACKLIGHT 4 3,4 PC5V +5V R732 +5V 3,4 R709 10 1/16W R705 4.7K 1/16W Q701 C708 PMBS3904 R707 4.7K 1/16W 1uF D704 D703 BAT54C SMAL140 3 1 +3V3 VLCD R716 R717 NC on_Panel R721 Q704 AO3401L R723 51K 1/16W R725 4 NC 4.7K 1/16W C718 0.1uF Q706 PMBS3904 0 1/16W 0.1uF R718 R729 R719 NC/10K NC/10K NC/10K 4 + C717 10uF/16V R727 10K 1/16W on_Panel_12V C720 Q707 +5V C714 100uF/25V 0.1uF 0 1/16W +12V R730 0 1/16W Q705 AO3401L R731 NC C716 0.1uF PMBS3904 NC/0.1uF 5 C719 R728 NC/10uF/16V NC/4K7 + Title TSUM57AK Size B Date: - 73 – ViewSonic Corporation C712 + VLCD_12V R724 51K R726 NC/4K7 C715 R713 NC 12/21 MODIFY +12V NC VCC3.3 ADJ R720 VLCD_12V R722 2 4 0.1uF +3V3 R715 10K 1/16W 10K 1/16W +5V +5V VLCD 5 +5V R714 VCC3.3 VOUT VOUT For RSDS and Panel VCC=12V +3V3 +5V VIN AIC1084-33PM C713 P.S: The 1N4148 Vf=0.7V~1V can't meet LDO spec. The BAT42, Vf is OK but the If=200mA(forward current) can not meet current spec. TO-263 U702 3 1K 1/16W 0 1/16W +5V D704(SSM12L) Vf=0.38V and If=1A. So when system power on, the system loading is about 400mA (3.3V is about 200mA and 1.8V is about 200mA), So D35 changed from 1N4148(or BAT42) to SSM12L(schottky diode). R701 R706 NC Recommond to used "Blue" parts circuit for VCC1.8V if you want to suppoert DDC PC5V 3 function when system power off Q703 PMBS3904 VCC5V Adj_BACKLIGHT VCC3.3 10K 1/16W CONN C709 4 R704 +5V 2 3,4 GND GND +12V GND +5V GND 100uF/25V +5V 4 CN701 2K 1/16W 1 +12V C707 + VCC3.3 R703 CHT2907 + 1uF/16V +12V 4 1N4148 C705 +5V C706 E R31 47 4K7 VCC1.8 1N4148 B Q702 BL_ADJ P W M D C VCC1.8 + C702 D701 BL_ADJ(DC) 0V ~ 3.3V 0V ~ 5V 4 R702 8 7 6 9 C704 + VCTRL H3 1 2 3 C703 H2 1 2 3 4 1 NC VO H1 +3V3 1 2 3 C701 +3V3 2 8 7 6 VO GND VI 8 7 6 NC/LT1117-18 1 2 3 SOT-223 3 8 7 6 U701 +5V 1 2 3 11.1 Confidential - Do Not Copy VG920 Document Number Rev A POWER Monday , May 30, 2005 Sheet 1 of 5 4 11.2 Scaler VDVI VMPLL VPLL AVDD VDDP VDDC VCC1.8 FB401 VDDC VCC3.3 3 3 51 AVDD R403 390 1% 62 C401 VCC3.3 0.1uF R486 VCC3.3 C417 61 C418 + BA1P/NC/BA2 BA1N/NC/BA3 BA2P/NC/BA4 BA2N/NC/BA5 BA3P/NC/BA6 BA3N/NC/BA7 RB1P/NC/RB2 RB1N/NC/RB3 RB2P/NC/RB4 RB2N/NC/RB5 RB3P/NC/RB6 RB3N/NC/RB7 REXT REFP CLKBP/LVBCKP/LCK_ODD CLKBN/LVBCKM/LDE NC/LVB2P/NC NC/LVB2M/NC BB1P/LVB1P/BB2 BB1N/LVB1M/BB3 BB2P/LVB0P/BB4 BB2N/LVB0M/BB5 BB3P/NC/BB6 BB3N/NC/BB7 R487 19 10K 1/16W C421 22pF 32 CLKAP/LVB3P/LHSY NC RSDS/LVDS/TTLCLKAN/LVB3M/LVSY NC RST R404 10K 1/16W NC GB1P/NC/GB2 GB1N/NC/GB3 GB2P/NC/GB4 GB2N/NC/GB5 GB3P/NC/GB6 GB3N/NC/GB7 REFM SDO SCZ SCK SDI ESP OSP GPO0 GPO1 GPO2 GPO3 GPO4 GPO5 GPO6 XIN X401 14.318MHz C423 33 22pF XOUT GPIO_P22 GPIO_P23 GPIO_P03 VCC3.3 R407 R410 R415 +5V 10K 1/16W 1 VCC GND U406 3 RST 102 104 NC NC 600 OHM 12 97 117 68 VDDC VDDC VDDC VDD_OTP 60 14 67 95 103 115 VDDP VDDP VDDP VDDP VDDP 4 34 52 RX2P RX2N RX1P RX1N RX0P RX0N RXCKP RXCKN DDCD_SDA DDCD_SCL TSUM57AK 2 70 VDD SDO 1 71 HOLD# CE# 6 72 WP# SCK 5 73 VSS SDI WP SST25VF010-20-4C-SAE 10uF/16V NC GA1P/NC/GA2 GA1N/NC/GA3 GA2P/NC/GA4 GA2N/NC/GA5 GA3P/LVA3P/GA6 GA3N/LVA3M/GA7 U402 8 7 3 4 NC 0.1uF VCTRL NC/LVACKP/NC NC/LVACKM/NC RA1P/LVA2P/RA2 RA1N/LVA2M/RA3 RA2P/LVA1P/RA4 RA2N/LVA1M/RA5 RA3P/LVA0P/RA6 RA3N/LVA0M/RA7 GPIO_P16 GPIO_P15 PWM2/GPIO_P24 GPIO_P27/PWM1 MODE[0] MODE[1] GPIO_P16 PWM1/GPIO_P25 R416 GPIO_P17/SAR0 GPIO_P00/SAR1 GPIO_P01/SAR2 GPIO_P02/SAR3 10K 1/16W 2 GPIO_P06 GPIO_P07 PWM0/GPIO_P26 GPIO_P13 GPIO_P14 ASM810MEURF-T Re s e t Cir cuit GND GND GND GND GND GND DDCROM_SCL DDCROM_SDA 11 VCTRL 107 108 109 110 111 112 113 114 PA0 PA1 PA2 PA3 PA4 PA5 PA6 PA7 98 99 100 101 105 106 PA8 PA9 PA10 PA11 PA12 PA13 89 90 91 92 93 94 PA14 PA15 PA16 PA17 PA18 PA19 PB0 PB1 PB2 PB3 PB4 PB5 2 3 5 6 7 8 PB6 PB7 PB8 PB9 PB10 PB11 118 119 120 121 122 123 124 125 126 127 128 1 PB12 PB13 PB14 PB15 PB16 PB17 PB18 PB19 PB20 PB21 PB22 PB23 PA[8..13] PA[14..19] 27 28 29 30 31 + 5 VCC3.3 PB[6..11] PB[12..23] PB[0..5] VCC3.3 FB404 VDVI VCC3.3 PB[12..23] C416 C414 C415 0.1uF 0.1uF 5 5 5 2 GPO[0..4] VCC3.3 VMPLL 600 OHM 5 C419 C420 0.1uF 0.1uF R405 ESP OSP GPO0 GPO1 GPO2 GPO3 GPO4 DDC_WP 22K 1/16W 3 Q402 PMBS3904 C422 VCC3.3 0.1uF R406 R481 10K 1/16W R482 NC on_PANEL_12V R488 on_PANEL NC 100 1/16W 100 1/16W 100 1/16W R422 R423 4.7K 1/16W 4.7K 1/16W B +5V VCC3.3 Q405 +5V NC 2,3 VCC3.3 R408 KEY A R483 NC 2 on_BACKLIGHT adj_BACKLIGHT R418 R420 R411 2 DET_DVI 3 DET_VGA 3 WP NC R412 10K 1/16W C616 2 2 NC R409 10K 1/16W R413 120 1/16W R414 10K 1/16W R417 KEY 1 KEY 2 POWER 120 1/16W Q403 20K 1/16W PMBS3906 Q401 C424 0.1uF R419 PMBS3906 R421 LED_A 0 1/16W LED_G 0 1/16W Volume AUDIO_MUTE AUDIO_STBY VCC3.3 VCC3.3 77 76 C425 13 38 41 47 96 116 R424 R425 10K 1/16W 10K 1/16W R428 R429 R426 U403 10K 1/16W 8 VCC R427 100 1/16W 7 WP 100 1/16W 6 SCL 100 1/16W 5 SDA R474 0.1uF A0 A1 A2 GND R475 3.9K 1/16W 1 2 3 4 3.9K 1/16W KEY 2 KEY _AUTO AT24C16N-10SC-2.7 R476 Option KEY _RIGHT 1K 1/16W R478 KEY _A 1K 1/16W R480 KEY _MENU +12V R477 +12V KEY _B 1.5K 1/16W KEY 1 FB407 600 OHM FB405 VPLL 600 OHM 0.1uF 5 VCC3.3 FB406 GPO[0..4] VCC3.3 2 600 OHM 5 PB[6..11] ESP OSP C409 C410 C411 C412 C413 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 5 PA[14..19] 2 PB[0..5] 20 21 22 23 24 25 VDDP 5 PA[8..13] 0.1uF 600 OHM C408 PA[0..7] FB402 AVDD 600 OHM C407 10uF/16V P[0..7] 75 74 26 35 69 78 79 VCC3.3 VCC3.3 C404 C405 C406 0.1uF 0.1uF 0.1uF VCC3.3 FB403 2 9 10 15 16 17 18 80 81 88 87 86 85 84 83 82 2 + 4.7uF/16V 2 C 39 40 42 43 45 46 48 49 36 37 3 R+ 3 R3 G+ 3 G3 B+ 3 B3 CLK+ 3 CLKDDCD_SDA DDCD_SCL RIN0P RIN0N GIN0P GIN0N SOGIN0 BIN0P BIN0N HSY NC0 VSY NC0 DDCA_SDA DDCA_SCL AVDD_ADC 3 R490 VCC1.8 C403 E 3 3 59 58 56 55 57 54 53 63 64 65 66 3 RIN GNDR 3 GIN 3 GNDG 10K 1/16W 10K 1/16W3 SOG 3 BIN 3 GNDB 3 HSY NC 3 VSY NC DDCA_SDA DDCA_SCL R489 AVDD_DVI AVDD_DVI VCC3.3 AVDD_PLL U401 AVDD_MPLL AVDD_MPLL 44 50 2 1K 1/16W R479 2 KEY _LEFT KEY _C 1K 1/16W +5V +5V +5V 0 1/16W 1K 1/16W R432 Volume R433 NC Q404 PMBS3904 0 1/16W C431 OUT-L+ OUT-L- 1 3 5 7 9 11 13 2 4 6 8 10 12 14 NC CONN R484 10K 1/16W C426 R485 10K 1/16W C427 C428 0.1uF 0.1uF 0.1uF C429 D401C430 0.1uF 1 CN404 R430 R431 AUDIO_STBY AUDIO_MUTE OUT-R+ OUT-R- 2 2,3 0.1uF RLZ36B D402 RLZ36B 1 +5V 2 FB408 600 OHM LED_G LED_A POWER CN403 KEY _B LED_G KEY _AUTO KEY _RIGHT POWER OUT-L+ OUT-L- 1 3 5 7 9 11 13 15 KEY _A LED_A KEY _MENU KEY _LEFT 2 4 6 8 10 12 14 16 KEY _C OUT-R+ OUT-RTitle TSUM57AK CONN Size C GND Date: - 74 – ViewSonic Corporation Confidential - Do Not Copy VG920 Document Number Rev SCALER Thursday , June 30, 2005 A Sheet 1 of 5 INPUT CN405 13 14 R434 56 1/16W C432 0.047uF FB411 0 1/16W R435 56 1/16W C433 0.047uF FB412 0 1/16W R436 56 1/16W C434 0.047uF R437 470 1/16W C435 0.047uF R441 100 1/16W C436 0.047uF R442 100 1/16W C437 0.047uF R443 100 1/16W C438 0.047uF R438 75 1/16W D403 BAV99 3 3 3 16 15 0 1/16W D404 BAV99 D405 BAV99 D406 +5V ESD_5V SOG 4 GNDR 4 GNDG 4 GNDB 4 2,4 1 120 OHM R446 100 1/16W DET_VGA 1K 1/16W VSI +5V 4 PC5V 2 FB409 4 10K 1/16W R445 HSI 4 BIN R444 C441 0.1uF 2 1 2 1 2 C440 0.1uF 4 GIN +5V MLL5232B 5.6V C439 0.1uF RIN R447 1K 1/16W HSY NC 4 VSY NC 4 1 12 FB410 R440 75 1/16W DB15 RED+ 1 RED6 GREEN+ 2 GREEN7 BLUE+ 3 BLUE8 4 PC5V PC5V 9 VGA_CON 5 10 11 R439 75 1/16W 17 11.3 D407 D408 MLL5232B 5.6V D409 MLL5232B 5.6V R448 C442 R449 C443 2.2K 1/16W 33pF 2.2K 1/16W 220pF 3 BAV70 D410 MLL5232B 5.6V R450 10K 1/16W SCL_VGA SDA_VGA 100 1/16W 100 1/16W 4 4 A0 A1 A2 GND C444 1 2 3 4 0.1uF DDCA_SDA DDCA_SCL DDC_WP +5V 100 1/16W 4 R455 R456 100 1/16W 100 1/16W DVI5V 1 D413 R457 10K 1/16W BAV70 3 DET_DVI 4 DVI5V 2 R458 11 3 19 22 R472 NC D426 LL5232B 5.6V 5% D414 LL5232B 5.6V 5% D415 LL5232B 5.6V 5% D416 LL5232B 5.6V 5% DAT0+ DAT0DAT1+ DAT1DAT2+ DAT2- C445 R459 0.1uF 10K 1/16W R462 R463 R464 R465 R466 R467 10 10 10 10 10 10 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W B+ BG+ GR+ R- 4 4 4 4 4 4 4 4 R460 R461 10K 1/16W 10K 1/16W U405 8 7 6 5 VCC WP SCL SDA A0 A1 A2 GND 1 2 3 4 C446 0.1uF M24C02 DDCD_SDA DDCD_SCL DDC_WP 4 +5V DCLK+ DCLKD421 BAV99 D422 BAV99 3 D420 BAV99 3 D419 BAV99 3 D418 BAV99 3 D417 BAV99 3 JACK DVI R468 R469 3 18 17 10 9 2 1 13 12 5 4 21 20 23 24 D412 MLL5232B 5.6V 10K 1/16W SCL_DVI SDA_DVI DVI5V HPD VCC WP SCL SDA M24C02 D411 MLL5232B 5.6V R471 3 DAT0+ DAT0DAT1+ DAT1DAT2+ DAT2DAT3+ DAT3DAT4+ DAT4DAT5+ DAT5clk+ clk- 25 26 27 29 28 8 15 6 7 14 16 3 1/3shield 2/4shield 0/5shield clk shield U404 8 7 6 5 VCC5V CN406 R G B RGB GND HSY NC VSY NC SY NC GND DDC SCL DDC SDA +5V HPD R453 R454 R451 R452 10K 1/16W 10K 1/16W D423 BAV99 10 1/16W 10 1/16W R473 CLK+ 4 CLK- 4 NC R470 D424 BAV99 1K 1/16W ESD_5V 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 1 2 C454 2 1 C453 2 1 C452 2 1 C451 2 1 C450 2 1 2 1 0.1uF C449 Title D425 0.1uF TSUM57AK RLZ36B Size B 1 0.1uF C448 2 1 2 C447 Date: - 75 – ViewSonic Corporation Confidential - Do Not Copy VG920 Document Number Rev A INPUT Monday , May 30, 2005 Sheet 1 of 5 Inverter C202 0.1uF/25V 470uF/25V R214 12KΩ 1/10W ON/OFF R211 NC R210 47KΩ 1/10W R213 4.7KΩ 1/10W C209 33uF/50V R212 62KΩ 1/10W R221 R222 R223 R224 1.8KΩ 1/4W 1.8KΩ 1/4W 1.8KΩ 1/4W 1.8KΩ 1/4W C205 1uF/25V D201 RB050L-40 R203 2.4KΩ 1/10W C210 1uF/25V R204 470Ω 1/10W 6 R206 12KΩ 1/10W Q206 KTC5103L-Y -U/P Q207 KTC5103L-Y -U/P 16 15 14 13 12 11 10 9 CT REF RT SCP 1IN+ 2IN+ 1IN2IN1FEEDBACK2FEEDBACK 1DTC 2DTC 1OUT 2OUT GND VCC C206 NC TP3 HVO D210 LL4148-GS08 R229 680Ω 1/10W R231 12KΩ 1/10W C223 0.1uF/25V D203 1N4148 R207 10KΩ 1/10W R225 1KΩ 1/4W 6 D204 1N4148 D207 1N4148 2. FOR 17" 4 LAMPS INVERTER Document Number Rev PWPC1742QDV1P(715G1492-1) Sheet D206 1N4148 2 is power GND is signal GND A of 2 - 76 – ViewSonic Corporation CN204 CONN D209 1N4148 AOC (Top Victory) Electronics Co., Ltd. Tuesday , July 05, 2005 C212 18pF/3KV R226 1KΩ 1/4W GND Date: 12 1 2 R209 0Ω 1/10W Size 1 2 C211 12pF/3KV R208 0Ω 1/10W Title TP4 HVL 8 9 D202 1N4148 R230 470Ω 1/10W D205 1N4148 1 2 3 4 5 6 7 8 C207 330pF C222 0.47uF/25V CN202 CONN CN203 CONN PT202 POWER X'FMR 1 11 IC201 TL1451ACD C214 12pF/3KV 12 1 2 C208 0.1uF/25V R232 51KΩ 1/10W 1 2 8 9 C221 0.33uF/250V Q205 PMBS3906 PT201 POWER X'FMR 1 11 C213 18pF/3KV R205 16KΩ 1/10W Q204 PMBS3904 CN201 CONN 1 ZD201 RLZ11B 1 L R202 220Ω 1/10W + DIM L201 Q203 AOU401L TP2 HVO 1 Q201 DTC144WKA R201 C204 2.4KΩ 1/10W 0.1uF/25V + C203 1 Q202 DTA144WKA 1 C201 0.1uF/25V TP1 HVO 2 2 3 +12V 1 11.4 Confidential - Do Not Copy VG920 R227 1KΩ 1/4W D208 1N4148 R228 1KΩ 1/4W A-D Power R921 47Ω 1/2W 4 11.5 C921 0.001uF/500V + DB901 KBP206G 3 3 2 D921 FME-210B L903 2 L F902 0Ω 1/8W +12V 1 - T901 POWER X'FMR 4 7 + R905 3.3KΩ 1/8W 8 4 L IC901 NCP1203D60R2G +5V 4 C903 0.47uF/250V + C924 1000uF/16V C900 0.0022uF/250V 3 R923 560Ω 1/4W ZD905 RLZ5.1B ZD904 RLZ13B 1 C911 470pF/50V D923 LL4148-GS08 1 4 NR901 NTCR IC902 PC123FY 2 4P R924 1KΩ 1/10W R914 4.7KΩ 1/10W Q902 2PA733P 1 2 2 R912 100Ω 1/10W F901 FUSE R929 33KΩ 1/10W CN902 CONN 1 2 3 4 5 6 7 8 C934 NC 2 1 3 1 NC 3 ZD901 RLZ18B R930 3.6KΩ 1/10W C932 0.47uF/25V 2 2 ZD902 RLZ5.1B R934 NC D924 LL4148-GS08 C912 0.001uF t 1 R913 75KΩ 1/10W + C908 10uF Q903 2PC945P D903 LL4148-GS08 C929 0.1uF IC903 KIA431A-AT/P R931 1KΩ 1/10W R925 0Ω 1/8W R919 20KΩ 1/10W ON/OFF DIM +12V +5V C927 0.1uF R932 1KΩ 1/10W 3 VAR901 C928 0.1uF R916 220Ω 1/10W 2 R900 330KΩ 1/8W R927 NC 10 1 R902 330KΩ 1/8W R926 NC Q901 2SK2645-54NR R901 330KΩ 1/8W C909 47uF/25V C926 470uF/16V D922 FMW-2156 R918 0.39Ω 2W + + 12 2 1 7 L R917 10KΩ 1/10W 1 5 NCP1203D60R2G R911 3.6KΩ 1/10W ZD903 PTZ9.1B L904 2 R909 68Ω 1/10W 6 R910 2.2KΩ 1/10W 8 L901 C906 100uF/25V R920 NC R915 22Ω 1/10W 2 1 9 2 C907 0.1uF 3 6 1 D902 UF4003 C901 0.001uF/250V 2 R907 NC C902 0.001uF/250V R922 C922 47Ω 1/2W 0.001uF/500V 1 R904 3.3KΩ 1/8W 11 + C925 470uF/25V 2 L902 L 5 + C931 1000uF/25V 1 1 D901 BA159GPT + C923 1000uF/25V 2 2 R908 100KΩ 2W C905 0.0015uF/2KV 1 4 R906 NC 3 C904 100uF/450V + 3 R903 3.3KΩ 1/8W C930 NC R933 2.4KΩ 1/10W GND 1 2 3 C933 NC CN901 CONN C935 0.001uF/250V AOC (Top Victory) Electronics Co., Ltd. Title - 77 – ViewSonic Corporation Confidential - Do Not Copy VG920 1.POWER OUTPUT 12V & 5 V Size B Document Number Date: Tuesday , July 05, 2005 Rev PWPC1742QDV1P(715G1492-1) Sheet 1 of A 2 11.6 Audio C602 0.001uF ROUTC603 ROUT+ FB602 C604 0.001uF 5V +12V 0.001uF FB604 FB601 600 OHM 600 OHM GND C606 C642 C607 0.1uF/16V NC C608 0.01uF C609 0.1uF/16V NC 38 37 39 40 41 42 43 GND BSRP PVCCR PVCCR ROUTP ROUTP PGNGR 46 45 44 ROUTN BSRN U601 ROUTN 48 C601 10uF/50V 47 GND GND + C643 0.01uF PVCCR + C605 10uF/50V R602 0 1/16W C634 NC PVCCR 10K 1/16W /SD GND 600 OHM PGNGR R601 AVDD C610 FB605 R609 10K 1/16W CN601 5 1 2 3 4 PHONEJACK C635 NC 1 R611 2 C611 1uF/16V C612 39K 1/16W NC R612 4 5 C615 39K 1/16W C616 1uF/16V 0.001uF LIN FB606 600 OHM R610 10K 1/16W 6 C619 1uF/16V MUTE V2P5 AVcc LINP VAROUTR/NC LINN 7 AVDDRef MODE_OUT/NC RINP C613 1uF/16V C614 1uF/16V C636 RINN 3 0.001uF VCLAMPR 36 1uF/16V RIN 600 OHM /SD VAROUTL/NC TPA3003D2PFBR AVddREF 8 AGND VREF AVdd 35 10 R606 VARMAX/AGND ROSC VOLUME AGND 32 PVCCL 23 PVCCL 22 LOUTP 21 20 LOUTP PGNGL 19 LOUTN PGNGL 18 17 LOUTN 16 BSLN FB609 14 13 +12V VCLAMPL PVCCL REFGND R605 NC + C617 C618 0.1uF/16V 10uF/50V 31 30 AVDD 5V 29 28 C622 220pF FB607 27 /SD MUTE/MODE R607 120K 1/16W 26 25 LOUT+ LOUT- 1 3 5 7 9 11 13 +12V 600 OHM VOLUME + C621 0.1uF/16V C620 470uF/16V ROUT+ ROUT- CN602 CONN C623 1uF/16V GND GND GND 600 OHM GND C626 0.01uF + C625 10uF/50V C627 0.1uF/16V GND GND C644 C628 GND C633 NC FB610 C629 0.1uF/16V 0.01uF GND FB612 C645 NC GND CN603 4 3 2 1 ROUTROUT+ LOUTLOUT+ NC 600 OHM LOUT- 600 OHM GND LOUT+ C630 0.001uF C631 0.001uF CONN C638 C639 C640 C641 NC NC NC NC C632 Title 0.001uF GND GND GND - 78 – ViewSonic Corporation 2 4 6 8 10 12 14 BSLP 12 R604 0 1/16W 24 11 C624 1uF/16V FB608 600 OHM COSC MUTE/MODE +12V NC 15 R608 1K 1/16W PVCCL VOLUME VARDIFF/AGND R603 NC 33 AVDDRef 9 GND 34 Confidential - Do Not Copy VG920 AUDIO BD FOR TPA3002/TPA3003 Size B Document Number 715L1178-H Date: Monday , July 04, 2005 Rev H Sheet 1 of 1 11.7 Key Pad 4 2 1 3 LED ORANGE LED GREEN LED001 LED CN001 GND SW001 SW002 SW003 SW004 SW005 SW006 SW007 SW008 SW SW SW SW SW SW SW SW 1 2 3 4 5 6 7 8 9 10 11 LCD ON/OFF KEY 2 KEY 1 KEY DOWN KEY UP VOLUME VOLUME + MUTE GND CONN GND AOC (Top Victory) Electronics Co., Ltd. Title KEY PAD (For Viewsonic) Size A Document Number Date: Thursday , May 05, 2005 - 79 – ViewSonic Corporation Confidential - Do Not Copy Rev B CONTROL KEY PAD (Switch) VG920 Sheet 1 of 1 12. PCB Layout Diagram 12.1 MAIN BOARD PCB TOP VIEW - 80 – ViewSonic Corporation VG920 Confidential - Do Not Copy 12.2 MAIN BOARD PCB BUTTON VIEW - 81 – ViewSonic Corporation VG920 Confidential - Do Not Copy 12..3 KEYBOARD TOP VIEW 12.4 KEYBOARD BUTTON VIEW - 82 – ViewSonic Corporation Confidential - Do Not Copy VG920 12.5 POWER PCB TOP VIEW - 83 – ViewSonic Corporation Confidential - Do Not Copy VG920 12.6 POWER PCB BUTTON VIEW - 84 – ViewSonic Corporation Confidential - Do Not Copy VG920 12.6 AUDIO PCB TOP VIEW - 85 – ViewSonic Corporation Confidential - Do Not Copy VG920 12.6 AUDIO PCB BUTTON VIEW - 86 – ViewSonic Corporation Confidential - Do Not Copy VG920 * Reader’s Response* Dear Readers: Thank you in advance for you feedback on our Service Manual, which allows continuous improvement of our products. We would appreciate your completion of the Assessment Matrix below, for return to ViewSonic Corporation. Assessment A. What do you think about the content after reading VG920 Service Manual? Unit 1. Precautions And Safety Notice 2. Specification 3. Front Panel Control and Indicators 4. Circuit Description 5. Adjustment Procedure 6. Troubleshooting Flow Chart 7. Recommended Spare Parts List 8. Exploded Diagram And Spare Parts List 9. Block Diagram 10. Schematic Diagram 11. PCB Layout Diagram Excellent Good Fair Bad Good Fair Bad B. Are you satisfied with the VG920 Service Manual? Item 1. Service Manual Content 2. Service Manual Layout 3. The form and listing Excellent C. Do you have any opinion and suggestion about this Service Manual? Reader’s Basic Data: Name: Title: 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 suggestion to the Director, Quality System & Process ([email protected]) - 87 – ViewSonic Corporation Confidential - Do Not Copy VG920