Service Manual ViewSonic VA702-1 VA702b-1 Model No. VS10781 17” Color TFT LCD Display (VA702-1_ VA702b-1_SM Rev. 1b Sep.
Copyright Copyright © 2006 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 computer language, in any form or by any means, electronic, mechanical, magnetic, optical, chemical, manual or otherwise, without the prior written permission of ViewSonic Corporation.
TABLE OF CONTENTS 1. Precautions and Safety Notices 1 2. Specification 4 3. Front Panel Function Control Description 13 4. Circuit Description 18 5. Adjustment Procedure 29 6. Troubleshooting Flow Chart 35 7. Recommended Spare Parts List 42 8. Exploded Diagram and Exploded Parts List 47 9. Block Diagram 49 10. Schematic Diagrams 50 11.
1. Precautions and Safety Notices 1. SAFETY PRECAUTIONS This monitor is manufactured and tested on a ground principle that a user’s safety comes first. However, improper used or installation may cause damage to the monitor as well as to the user. WARNINGS: z z z z z z z z This monitor should be operated only at the correct power sources indicated on the label on the rear of the monitor. If you’re unsure of the power supply in you residence, consult your local dealer or Power Company.
4. Handling and Placing Methods Correct Methods: Incorrect Methods: Only touch the metal of the LCD panel or the front Surface of the LCD panel is pressed by fingers and cover of he monitor. Do not touch the surface of the that may cause "Mura". polarizer. Taking out the monitor by grasping the LCD panel. That may cause "Mura". Take out the monitor with cushions.
Correct Methods: Incorrect Methods: Placing the monitor on foreign objects, That could scratch the surface of the panel or cause "Mura". Place the monitor on a clean and soft foam pad. The panel is placed facedown on the lap. That may cause "Mura".
2. Specification INTRODUCTION FEATURES VA702/b Size 17 “ Luminance (Typ) 300 cd/㎡ Contrast Ratio (Typ) 500:1 TFTLCD PANEL Colors (6 bits + 2 bits FRC) 16.2 M Response Time (Typ) 12 ms Viewing Angle (H/V) 140 ° / 125 ° Recommend resolution 1280x1024@60Hz Size 17 “ Luminance (Typ) 300 cd/㎡ Contrast Ratio (Typ) 500:1 nd 2 Colors (6 bits + 2 bits FRC) 16.
GENERAL specification Test Resolution & Frequency Test Image Size Contrast and Brightness Controls 1280x1024 @ 60Hz Full Size Factory Default: Contrast = 70%, Brightness = 100% VIDEO INTERFACE Analog Input Connector Video Cable Strain Relief Video Cable Connector DB-15 Pin out Video Signals Video Impedance Maximum PC Video Signal Maximum Mac Video Signal Sync Signals DDC 1/2B Sync Compatibility Video Compatibility Resolution Compatibility Exclusions ViewSonic Corporation DB-15 (Analog), refer the append
POWER SUPPLY Internal Power Supply Input Voltage Range Input Frequency Range Short Circuit Protection Over Current Protection Leakage Current Efficiency Fuse Power Dissipation Max Input AC Current INRUSH CURRENT (COLD START) Power Supply Cold Start Power Supply Transient Immunity Power Supply Line Surge Immunity Power Supply Missing Cycle Immunity Power Supply Acoustics US Type Power Cable European Type Power Cable CCC Type Power Cable PSE Type Power Cable Power Saving Operation(Method) Power Consumpti
ELECTRICAL REQUIREMENT Horizontal / Vertical Frequency Horizontal Frequency Vertical Refresh Rate 30 – 82 KHZ 50 – 85* HZ. * WHEN THE RESOLUTION IS SET TO 1280 X 1024, THE VERTICAL REFRESH RATE MAY BE UP TO 75 HZ; FOR ALL OTHER RESOLUTIONS, THE VERTICAL REFRESH RATE MAY BE UP TO 85HZ. Maximum Pixel Clock Sync Polarity 140 MHz Independent of sync polarity. Timing Table Item Timing 1 640 x 350 @ 70Hz, 31.5kHz 2 640 x 400 @ 60Hz, 31.5kHz 3 640 x 400 @ 70Hz, 31.5kHz 4 640 x 480 @ 50Hz, 24.
AUDIO INTERFACE (SPEAKER SPECIFICATION) No Audio function TFT LCD PANEL Panel Characteristics: 1st Source Panel Model number Type Active Size Pixel Arrangement Pixel Pitch GLASS TREATMENT # OF BACKLIGHTS BACKLIGHT LIFE Luminance (Center) – Condition: CT = 6500K, Contrast = Max, Brightness = Max Brightness Uniformity (13 points) Contrast Ratio Color Depth Viewing Angle (Horizontal) VIEWING ANGLE (VERTICAL) Response Time 10%-90% @ Ta=25°C Panel Defects ViewSonic Corporation Innolux MT170EN01 V1 TN type wi
2nd Source Panel Model number Type Active Size Pixel Arrangement Pixel Pitch GLASS TREATMENT # OF BACKLIGHTS BACKLIGHT LIFE Luminance (Center) – Condition: CT = 6500K, Contrast = Max, Brightness = Max Brightness Uniformity (13 points) Contrast Ratio Color Depth Viewing Angle (Horizontal) Innolux MT170EN01 V4 TN type with LVDS interface 337.9 (H) x 270.3 (V) RGB Vertical Stripe 0.
3rd Source PAnel Model number Type Active Size Pixel Arrangement Pixel Pitch GLASS TREATMENT # OF BACKLIGHTS BACKLIGHT LIFE Luminance (Center) – Condition: CT = 6500K, Contrast = Max, Brightness = Max Brightness Uniformity (13 points) Contrast Ratio Color Depth Viewing Angle (Horizontal) VIEWING ANGLE (VERTICAL) Innolux MT170EN01 V7 TN type with LVDS interface 337.9 (H) x 270.3 (V) RGB Vertical Stripe 0.
IMAGE PERFORMANCE Factory Defaults Item Contrast Brightness Color Temperature Sharpness 720x400/640x400 Defaults 70% 100% 6500K 33% 720x400 Luminance Lv (Max) – Condition: Contrast = 100% Brightness = 100% Color Temperature = 6500K Lv (Def) – Condition: Contrast = Default Brightness = Default Color Temperature = 6500K Preset Color Temperatures SRGB Preset 1 9300K CCT (Max) = 10250K.
MECHANICAL Dimension (Desktop) Width Height Depth Monitor Weight 378mm (14.9 inch) 374 mm (14.7 inch) 196 mm ( 7.7 inch) 4.5 Kg (9.9 lbs) *Refer to Figure 1 Dimension (Head Only / Wall Mount) – Unfolding the Monitor Stand Width 378 mm (14.9 inch) Height 424 mm (16.7 inch) Depth 61 mm (2.38 inch) Monitor Weight 4.5 Kg (9.
3. Front Panel Function Control Description Adjusting the Screen Image Use the buttons on the front control panel to display and adjust the OSD controls which display on the screen. The OSD controls are explained at the top of the next page and are defined in “Main Menu Controls” on page 10. Main Menu with OSD controls Front Control Panel shown below in detail Power light Green = ON Orange = Power Saving Displays the control screen for the highlighted control.
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, pressSorTto 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.
Main Menu Controls Adjust the menu items shown below by using the upSand downTbuttons. Control Explanation Auto Image Adjust automatically sizes, centers, and fine tunes the video signal to eliminate waviness and distortion. Press the [2] button to execute Auto Image Adjust. NOTE: Auto Image Adjust works with most common video cards. If this function does not work on your LCD display, then lower the video refresh rate to 60 Hz and set the resolution to its pre-set value.
Control Explanation 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, pressSorT. 3. When all color adjustments are complete, press button [1] twice. Information displays the timing mode (video signal input) coming from the graphics card in the computer, the LCD model number, the serial number, and the ViewSonic® website URL.
Control Explanation 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 advises the optimal resolution to use. 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 “15 second” setting, if a control is not pushed within 15 seconds, the display screen disappears.
4. Circuit Description Electronic Circuit Theory 1 Switching Mode Power Supply 1.1 AC Current Input Circuit P801 is a connector for connecting AC Power. F801 is a fuse to protect all the circuit. AC input voltage is from 90V to 264V. R820 and R821 joined between two inputting main circuit to prevent man from shock. L801 is used to clear up low frequency wave. C801 and C806 are used to discharge the waves that L801 produced. High frequency waves are damped by C801 and C806.
2 Inverter circuit 2.1 Low voltage to high voltage circuit 12VDC supplies the power to IC501 through F501; the control signals that BRIGHTNESS and ON/OFF come from I/F board. ON/OFF signal connect to pin8 of IC501 and makes IC501 enabled. BRIGHTNESS is connected to pin7 of IC501 to adjust the panel luminance. R524, R529, C505 make up of a delay-time circuit and R528, R523, R524 make up of a voltage divided circuit. C504 is used to filter the high frequency noise.
3.4 VGA Input Signal R, G, B, SOG input through CN102 #1, #2, #3, and C115, C116, C117 and C118 filtering the high frequency noise. Signal HSYNC and VSYNC input through CN102 #13 and #14, and C119, R119, C120, R120 filtering. Then the analog signal enters U104, and then U104 deals with it internally. In addition, TVS101, TVS102, TVS103 (the three are BAV99), TVS104, TVS105, TVS106, TVS107 (they are constant voltage diode of 5V6) are ESD protector.
4. Power On/Off Sequence 4.1 Hardware Power ON When power cord is plugged into AC socket, SMPS starts work and provides U105 and U106 with VCC5V. When VCPU inputs to U105, U105 resets circuit active, sets U105 all registers to preset modes, and then U105 #43 sends out a HWRESET signal voltage to reset U104, and then monitor goes into stand-by mode. That means hardware power on has been completed. 4.
4 5 BRIGHTNESS ON/OFF Brightness Control CCFL on/off Control 6.3 CN106 (Interface BD to Keypad) Pin Symbol Description No. 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 control 5 KEY_DOWN OSD “▼” control to adjust value to decrease 6 LED_GREEN Green LED lighting control 7 GND Ground 8 LED_ORANGE Orange LED lighting control 6.
4 5 NC Cable Detect 9 10 +5V(from PC) GND 14 15 VSYNC Data clock line (SCL) 7. 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 MOSFET 7.2 IC501 (OZ9910G, CCFL inverter controller IC) Pin No.
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 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 NC VDDC GND GND VDDP NC NC NC NC NC NC NC NC AD0 AD3 HWRESET XIN XOUT AVDD_MPLL GND HSYNC0 VSYNC0 GND NC NC GND NC NC VDD_ADC NC NC GND NC NC VDD_ADC REXT AVDD PLL GND AVDD ADC GND BINOM BINO GINOM GINO SOGIN0 RINOM RINO GND AVDD_ADC REFP REFM GND ALE/CS WRZ/SDA RDZ/SCL INT PWM0 PWM1 NC NC ViewSonic Corporation I O I/O I/O I I
77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 AD1 AD2 NC NC NC NC NC VDDP GND GND VDDC NC NC NC NC NC NC VDDP GND GND VDDC NC NC NC NC LVA3P LVA3M VDDP GND LVACKP LVACKM LVA2P LVA2M LVA1P LVA1M LVA0P LVA0M VDDP GND GND VDDC LVB3P LVB3M LVBCKP LVBCKM LVB2P LVB2M LVB1P LVB1M VDDP ViewSonic Corporation I/O I/O O I O I O O O O O O O O O O O O O O O O O O O O O DDR direct bu
127 128 GND LVBOP O Ground B-Link Positive LVDS Differential Data 7.4 U105 (Micro-controller: W78E65P-40) Pin 1 2 3 4 5 Symbol P4.2/INT3 P1,0/T2 P1.1/T2EX P1.2 P1.3/PWM0 I/O O O I O 6 P1.4/PWM1 O 7 P1.5/PWM2 O 8 9 10 11 P1.6/PWM3 P1.7/PWM4 RST P3.0/RXD 12 P4.3/INT2 13 14 15 16 17 18 P3.1/TXD P3.2/INT0 P3.3/INT1 P3.4/T0 P3.5/T1 P3.6/WR 19 P3.7/RD 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 XTAL2 XTAL1 GND P4.0 P2.0/A8 P2.1/A9 P2.2/A10 P2.3/A11 P2.4/A12 P2.5/A13 P2.6/A14 P2.
Disassembly Block VA702/b (INL PANEL)DIS-ASSEMB LY BLOCK BASE SUB-ASSM *1 HINGE COVER*2 (SCREW,P,CROSS,M5*22, Ni*4) BEZEL SUB-ASSM *1 (SCREW,B,CROSS,T4*10, BLK*4) BEZEL SUB-ASSM(G/S) BUTTON FUNCTION KEY*1 FRONT BEZEL (G/S)*1 BACK COVER SUB-ASS’Y HINGE,RIGHT*1 HINGE,LEFT*1 (SCREW,F,CROSS,T4*10, Ni*4) (SCREW,I ,CROSS,M3*4,Zw*1) LED LENS*1 SUPPORT VESA *1 BACK COVER *1 Rubber spacer*1 Logo *1 BACK COVER SUB-ASS’Y*1 BRACKET_R*1 GROUND WIRE*1 KEYPAD CABEL* KEYPAD ASSM*1 (SCREW,PW,CROSS,M3*5, Ni *2) (S
Assembly Block VA702/b (INL panel)ASSEMBLY BLOCK CHASSIS*1 FRONT BEZEL (G/S)*1 LOGO PLATE,THREE BRID*1 INSULATOR,MYLAR*1 IF BOARD*1 POWER BOARD*1 FFC CABLE*1 CLIP,WIRE*1 (SCREW,PW,CROSS,M3*5, Ni*4) (BOLT, #4-40x11.
5. Adjustment Procedure 1. Key Function Description CONTROL KEY [AUTO] [2] By pressing [AUTO] key, “Auto Image Adjust” is performed [MENU] [1] By pressing [MENU] key, Main menu display [▼] [▲] [POWER] 2. KEYS FUNCTION A. When “MENU OSD” display, press these keys to change the contents of an adjustment item, or change an adjustment value B.
Fine Tune Sharpness Language Select Setup Menu Resolution Notice OSD Position OSD Time Out OSD Background +/+/English French German Italian Spanish Finnish Japanese Simplified Chinese Traditional Chinese On/Off H Position (+ / -) V Position (+ / -) On/Off Memory Recall 3.
3.4 Resolution notice function Resolution Notice Menu Method Phenomenon Resolution Notice OSD should show on screen after changing to Activate Resolution non-native mode for 30 sec, -----Notice Menu And it should disappear after 10s or by pushing button [1] or [2] Deactivate Push button [2] under Resolution Resolution Notice ------Notice OSD, select Disable Menu Item 3.5 Factory Mode Introduction When input the signal, press “power key” to turn off the monitor.
7. Upload firmware to MCU via VGA Cable 7.1 Connect ISP board between monitor and PC as below configure D-SUB 15PIN RS232 9PIN Insert to RS232 9pin CON on PC D-SUB 15PIN ISP Board LCD Monitor D-Sub Service cable PC VGA output Normal shipping cable +12V Adapter 7.2 Before plug in the power cord, make sure keep “▲“ key to be pressed, when power on you can enter ISP mode. 7.3 8051ispwriter.exe will detect automatically which MCU used in this monitor.
Y measurement at default setting Panel Flicker check Power saving 1. Set brightness to default value 100 and contrast to default value 70 at 6500K 2. At full white patter, Measure Y, which should be 250+/-10cd/m² (QDI 220+/- 10cd/m²) 1. Mode: 1280x1024@60Hz 2. Set Brightness& contrast to default value 3. Do “Auto Image Adjust” 4. Shut down PC to check whether there’s glitter on the center of the picture. 1. Mode: 1280x1024@60Hz 2. Pattern: full white 3. Brightness: Max. 4. Contrast: Default 5.
6. Troubleshooting Flow Chart 1. Common Acknowledge z If you change the interface board, be sure that the U105, U106 and U103 these three components also changed to the new I/F board because there was program inside. If not, please re-write EDID or upload firmware into MCU via VGA Cable. If you adjust clock and phase, please do it at the condition of Windows shut down pattern. If you confirm the R.G.B. color is normal or not, please do it under 16-grey scalar pattern. This LCM is analog interface.
2. No Power & Power LED Off No power Check circuit if short Check primary rectifier voltage Check IC802, C805, T801 Check F801, P801, D801 Check pin3 of IC802 voltage about 1V Check R801, R805, R822, R823, R817 Check pin2 of IC802 voltage about 2V Check R803, R807, R824, R825 Check pin1 of IC802 voltage is 5.
3. DC output voltage is unstable Output Voltage Unstable Check Vbe of Q801 below 0.
4. Output power is unstable Unstable power Check sampling Circuit Check R810, R811, R818 Change R810, R811, R818 Check the C pin voltage of IC803 if 3V Check the R pin voltage of IC803 about 2.5V Change IC803 Check R809, R808, R814, D809 Check pin1 of IC802 voltage is 5.
5. Backlight can’t be turned on No raster? Yes LED Green? Yes Backlight cannot be turned on.
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8. Bad Screen Bad Screen OK LVDS Cable Reinsert Workmanship NG OK Change LVDS Cable LVDS Cable NG NG 1.Check X101,C154,C155 2.
7. Recommended Spare Parts List RECOMMENDED SPARE PARTS LIST (VA702-1) ViewSonic Model Number: VS10781 Rev: 1b Serial No. Prefix: PST 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 38 39 40 41 42 43 44 45 46 Description ECR/ECN ViewSonic P/N Ref. P/N Location Universal number# KIT,ACCESSORY(INL), LE1709 A-00003039 703000000500 PWR CORD 10A/125V BLK 6FT UL/CSA,SVT 18x A-00003040 453070800250 PWRCORD 10A/250V BLK 6FT CHINA.RVV 3Gx0.
RECOMMENDED SPARE PARTS LIST (VA702B-1) ViewSonic Model Number: VS10781 Rev: 1b Serial No. Prefix: PSX 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 38 39 40 41 42 43 44 45 Accessories: Board Assembly: Cabinets: Cables: Electronic Components: Hardware: Packing Material: Plastics: Description PWR CORD 10A/125V BLK 6FT UL/CSA,SVT 18x KIT,ACCESSORY,VA702B-INL,LE1709 PWRCORD 10A/250V BLK 6FT CHINA.RVV 3Gx0.
BOM LIST (VA702-1) ViewSonic Model Number: VS10781 Serial No.
BOM LIST (VA702B-1) ViewSonic Model Number: VS10781 Serial No.
8.
EXPLODED PARTS LIST (VA702-1) Item 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 ViewSonic Model Number: VS10781 Rev: 1a ViewSonic P/N C-00003154 E-00003048 B-00003041 CB-00003155 B-00003043 HW-00003156 B-00003172 CB-00003157 HW-00003158 HW-00003159 C-00003160 HW-00003161 B-00003042 CB-00003162 C-00003163 C-00003164 M-00003165 HW-00003166 HW-00003167 HW-00003168 HW-00003169 HW-00003170 M-00003171 Ref.
9. Block Diagram 1 4 Lamp2 OZ9910 2 Open Protection 3 4 Lamp4 2 1 Rectifier & Filter Circuit Power Transformer TOP246Y OPP/OCP LTV817 Feedback OVP 5V MCU W78E65p LDO 5V-3.3V 5V-1.8V Panel Enable On/Off AP2301 PMBT3906 XTAL2 14.318MHz Brightness Panel Interface Scaler TSU16AK VGA Connector XTAL1 22.
10. Schematic Diagrams C820 2200P Y1 C805 C807 100u 450V 33n 400V/ NC ZD802 P6KE200A R801 3M3 8 R824 510K R822 3M3 D805 SRF5-04 F 3 1 R816 6R8 5 R817 12K C813 47p 1KV C818 47u/25V C817 0.1u 50V 3 Q802 2SC1815 B801 BEAD CORE 3.5x9 C826 1000u 10V C814 47u 25V R808 10K IC801 LTV817 4 X 3 S 4 C806 2200P Y2 250V R812 6R8 C 2 R829 200R 1 R827 10K C822 0.1u 50V ZD803 5.6V ZD804 16V 6 C815 47u/25V IC802 TOP246Y R828 100R 1W ZD801 9.
+14V H C511 2.2uF/25V C522 220uF/25V R501 3M/3kv + T501 EEL-19 22:2600 2 D513 SKS20-04AT 2 1 IC501 R528 182K 1% R522 91K 1% 4 5 C529 220P/50V 6 7 BRIGHTNESS R524 51K 1% 8 C504 1n/50V 15 PDRV1 PGND 3 R523 100K 1% PDRV2 NDRV2 2 16 NDRV1 HSB GNDA VIN CT V5000 LCT ISEN DIM CMP_SST ENA VSEN C528 1.0u/25V 14 CN502 8 7 6 5 D1 D1 D2 D2 6 H 7 C527 5P/3KV 3 C530 6.
U102 FS8860-33PJ VCC5V VAA1 ADJ VOUT C102 0.1/50V + C103 100uF/16V 1 + VIN VCC3.3 2 VAA2 C104 0.1/50V VAA3 VAA4 VAA1 VAA2 VAA3 VAA4 R174 9.1R/2W U101 FS8860-18PJ VIN VOUT 2 VCC5V 1 2 3 4 5 6 BRIGHTNESS ON/OFF C111 0.1/50V + C101 100uF/16V VCC1.8 + C106 100uF/16V 1 + CN101 4500-06 VCC1.8 ADJ 3 C105 100uF/16V/NC VCC3.3 From Power & Inverter C169 100uF/16V 3 C107 0.1/50V R104 4K7 BRIGHTNESS DIMMER1 C113 1u/16V VCC5V Q101 S R101 10K C108 0.
16 PC5V_VGA 11 1 6 2 7 3 8 4 9 5 10 12 13 14 R166 0 VGA_G R167 0 VGA_B R168 0 R112 75 1% R113 75 1% R115 R121 R116 R122 R117 R123 R118/NC 22 47 22 47 22 47 470 C115 C121 C116 C122 C117 C123 NC/C118 47n/25V 47n/25V 47n/25V 47n/25V 47n/25V 47n/25V 1000P/50V R114 10K R107 100 RIN GNDR GIN GNDG BIN GNDB SOG VCC5V TVS101 BAV99 17 15 VGA_R R111 75 1% CN102 DZ11AA1-HW6 TVS102 BAV99 C165 NC C166 NC C167 NC TVS103 BAV99 HPD_VGA DDC_SCL_VGA DDC_SDA_VGA R110 100 R108 1K HSI R165
VAD VPLL VDVI VDPLL VPO VCC3.
CN103 AL2309-A0G1Z PB[0..9] PA[0..9] PB9 PB8 PB7 PB6 PB5 PB4 RXO0RXO0+ RXO1RXO1+ RXO2RXO2+ PB3 PB2 PB1 PB0 PA9 PA8 RXOCRXOC+ RXO3RXO3+ RXE0RXE0+ PA7 PA6 RXE1RXE1+ PA5 PA4 PA3 PA2 PA1 PA0 RXE2RXE2+ RXECRXEC+ RXE3RXE3+ VLCD VLCD 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 CN104 DUPON2.
RP101 10K VCPU 1 2 3 4 8 9 23 33 34 RP104 10K 8 7 6 5 2 3 4 5 6 7 PANEL_ENABLE CCFL_ENABLE DET_VGA VCPU Q104 PMBT3906 LED_GREEN R158 51 R143 4K7 R144 4K7 1 P3.4/T0 P3.5/T1 P3.6/WR VCPU R145 220 4 3 2 1 4 3 2 1 5 6 7 8 10K P3.7 P1.0 P1.1 P1.2 P1.3 P1.4 P1.5 P3.3/INT1 P4.2 C154 12p/50V 5 6 7 8 5 6 7 8 4 3 2 1 R134 44 P2.0 P2.1 P2.2 P2.3 P2.4 P2.5 P1.6/PWM3 P1.7/PWM4 P4.0 ALE P4.1 20 R142 220 C153 NC/10u/16V P4.3/INT2 P3.1/TXD P3.
LED101 GREEN LED_GREEN LED_ORANGE KEY_MENU/EXIT KEY_SELECT/AUTO KEY_POWER KEY_DOWN KEY_UP ORANGE SW101 SW102 SW103 SW104 6 8 2 1 4 5 3 7 SW105 CN106 2x4PIN SW TACT SW TACT SW TACT MENU/1 AUTO/2 POWER SW TACT DOWN SW TACT UP ViewSonic Corporation Model Title Date ViewSonic Corporation 56 Confidential - Do Not Copy VA702-1_VA702b-1 KEYPAD Rev:
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Main board bottom Layout ViewSonic Corporation 58 Confidential - Do Not Copy VA702-1_VA702b-1
POWER board ViewSonic Corporation Confidential - Do Not Copy 59 VA702-1_VA702b-1
ViewSonic Corporation 60 Confidential - Do Not Copy VA702-1_VA702b-1
* Reader’s Response* Dear Readers: Thank you in advance for your 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 of this Service Manual? Unit Excellent Good Fair Bad 1. Precautions and Safety Notices 2. Specification 3. Front Panel Function Control Description 4. Circuit Description 5. Adjustment Procedure 6.
