ViewSonic VX712 Service Manual Download Page 24

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ViewSonic Corporation

Confidential - Do Not Copy

VX712

5 RT

Temperature

Protection

For over-temperature protection. An external NTC
thermistor is connected from this pin to ground. The
impedance of the NTC will decrease under high
temperature. Once the voltage on RT pin drops below a
fixed limit, the PWM output will be disabled.

6 SENSE

Current

Sense

Current sense. The sensed voltage is used for current
mode control and pulse-by-pulse current limiting.

7 VDD

Power

supply

Power

Supply.

8 GATE

Driver

Output

The totem-pole output driver for the power MOSFET. A soft
driving waveform is implemented to improve EMI.

Block Diagram

Summary of Contents for VX712

Page 1: ... 1 ViewSonic Corporation Confidential Do Not Copy VX712 Manufacture Date Dec 20 05 Service Manual ViewSonic VX712 Model No VS10057 17 Color TFT LCD Display ...

Page 2: ...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 Cor...

Page 3: ...on 7 3 Front Panel Control And Indicators 10 4 Circuit Description 16 5 Adjustment Procedure 26 6 Troubleshooting Flow Chart 50 7 Recommended Spare Parts List 51 8 Different Part List 69 9 Exploded Diagram And Spare Parts List 71 10 Disassemble Process 72 11 Block Diagram 75 12 Schematic Diagram 76 13 PCB Layout Diagram 82 ...

Page 4: ...nplug 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 ...

Page 5: ...orrect Methods Only touch the metal frame of the LCD panel or the front cover of the monitor Do not touch the surface of the polarizer Surface of the LCD panel is pressed by fingers and that may cause Mura Take out the monitor with cushions Taking out the monitor by grasping the LCD panel That may cause Mura ...

Page 6: ...e the monitor on a clean and soft foam pad Placing the monitor on foreign objects That could scratch the surface of the panel or cause Mura Place the monitor on the lap the panel surface must be upwards The panel is placed facedown on the lap That may cause Mura ...

Page 7: ...it FRC data Viewing Angle Horizontal 150 Vertical 135 Contrast Ratio 700 1 Typ Brightness 300 cd Typ Response Time 8ms Typ Active Display Area 337 9 H x 270 3 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 Audio Input 1 x 2 Watts Power Management Energy Star compliant VESA DPMS compatible 1 W Power ...

Page 8: ... VIDEO B Blue 0 7vp p VIDEO H H Sync TTL positive or negative V V Sync TTL positive or negative SDA DDC1 2B TTL SCL DDC1 2B TTL 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 ...

Page 9: ...RX1 TMDS negative differential input channel 1 10 RX1 TMDS positive differential input channel 1 11 GND Logic Ground 12 Reserved 12 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 N...

Page 10: ... 10 ViewSonic Corporation Confidential Do Not Copy VX712 3 Front Panel Function Control Description Main Menu with OSD controls Front Control Panel shown below in detail ...

Page 11: ... the setting press the up or down buttons 5 To save the adjustments and exit the menu press button 1 twice The following tips may help you optimize your display Adjust your computer s graphic card so that is outputs a 1280 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 Positi...

Page 12: ... 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 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 6...

Page 13: ...et 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 1024 60Hz recommended means that the resolution is 1280 1024 and the refresh rate is 60Hz Manua...

Page 14: ...ows the user to choose the language used is the menus and control screens Resolution Notice displays the Resolution Notice menu shown below 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 withi...

Page 15: ...anual Exception This control does not affect changes mode with the User Color control Language Select or Power Lock setting Short Cut Key Function key 5 keys Main Menu Input toggle Analog Digital Audio Adjust Toggle 720x400 and 640x400 mode when input 720x400 or 640x400 mode White Balance Not shown on user s guide Power Lock OSD Lock Factory Mode Remark All the short cuts function are only availab...

Page 16: ...OCK FUNCTION DESCRIPTION The main board contains panel control logic brightness control logic DDC and DC convert DC circuit and so on Power Board Include adapter inverter Flat Panel and CCFL backlight Main Board Key Board RS232 Connector For white balance adjustment in factory mode HOST Computer CCFL Drive AC IN 100V 240V Video signal DDC Monitor Block Diagram R G B H V SDA SCL OSC Backlight and P...

Page 17: ... 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 EMI filter Bridge Rectifier and Filter Start Circuit R903 R904 R905 PWM Control IC Over Voltage Protect Rectif...

Page 18: ...RX2P Differential Data Input 15 RX2N Differential Data Input 17 RX1P Differential Data Input 18 RX1N Differential Data Input 20 RX0P Differential Data Input 21 RX0N Differential Data Input 23 RXCP Differential Data Input 24 RXCN Differential Data Input 51 PWM2 TCON 2 S 3 PWM2 TCON 2 SDIO 3 55 PWM2 TCON 13 COUT PWM2 TCON 13 Crystal out 113 PWM2 TCON 12 COUT PWM2 TCON 12 Crystal out 47 PWM1 DDCSDA T...

Page 19: ...I F clock TCON 0 TTL BBLU 1 47 DDCSDA TCON 1 pWM1 BBLU 0 DDC serial control I F data input out CON 1 Pwm1 TTL BBLU 0 126 DDCSCL2 TCON 5 DDC serial control I F clock TCON 5 125 DDCSDA2 TCON 7 pWM1 DDC serial control I F data input out TCON 7 pWM1 28 ADC_REFIO ADC band gap voltage de coupling 29 ADC_VDD Analog power 3 3v 30 BLUE Analog input from BLUE channel 31 BLUE Analog input ground from BLUE ch...

Page 20: ... 20 ViewSonic Corporation Confidential Do Not Copy VX712 ...

Page 21: ...ral purpose I O Txd open drain CN 12 6 No connection P3 2 INT0 14 8 General purpose I O External interrupt 0 Standard 8051 P3 3 INT1 15 9 General purpose I O External interrupt 1 Standard 8051 P3 4 T0 16 10 General purpose I O T0 Ext Counter Timer 0 Standard 8051 P3 5 T1 17 11 General purpose I O T1 Ext Counter Timer 1 Standard 8051 P7 6 CLKO2 18 12 General purpose I O Clock out 2 CMOS P7 7 19 13 ...

Page 22: ...ral purpose I O Standard 8051 CMOS P1 3 40 34 General purpose I O Standard 8051 CMOS P1 2 41 35 General purpose I O Standard 8051 CMOS P1 1 42 36 General purpose I O Standard 8051 CMOS P1 0 ET2 43 37 General purpose I O External Counter Timer2 Standard 8051 CMOS VCC 44 38 3 3V power TDA7496L U201 The TDA7496L is a stereo 2W 2W class AB power amplifier assembled in the Powerdip driving speakers as ...

Page 23: ...nse signal from Pin 6 3 VIN Start Up This pin is pulled high to the rectified line input through a resistor for start up Since the start up current requirement for SG6841 is very small a large start up resistance can be used to minimize power loss Under normal operation this pin is also used to detect line voltage to compensate for constant output power limit for universal AC input 4 Ri Reference ...

Page 24: ... decrease under high temperature Once the voltage on RT pin drops below a fixed limit the PWM output will be disabled 6 SENSE Current Sense Current sense The sensed voltage is used for current mode control and pulse by pulse current limiting 7 VDD Power supply Power Supply 8 GATE Driver Output The totem pole output driver for the power MOSFET A soft driving waveform is implemented to improve EMI B...

Page 25: ...scription 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 Po...

Page 26: ...or 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...

Page 27: ...ator 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 ...

Page 28: ...120 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 A...

Page 29: ...on 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 Item Timing Analog Digital 1 6...

Page 30: ...20 60Hz 45kHz HDTV Yes Yes Function Test Display Pattern Item Test Content Pattern Specification Remark 1 Frequency Tracking Fine Line Moire Eliminate visual wavy noise Figure 1 2 Contrast Brightness 16 Gray Scale 16 gray levels sh should be distinguishable Figure 2 3 Boundary Horizontal Vertical Thickness Horizontal and Vertical position of video should be adjustable to be within the screen frame...

Page 31: ...oration Confidential Do Not Copy VX712 Fine Line Morie Pattern Figure1 Gray Scale Pattern Figure2 Horizontal Vertical Thickness Pattern R Color Pattern Figure 4 Figure 3 G Color Pattern Figure 5 B Color Pattern Figure 6 ...

Page 32: ...ase 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 fo...

Page 33: ...n 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...

Page 34: ... to check with the general test pattern to make sure every secondary is compliant with the specification 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 whet...

Page 35: ... of PC by LPT Cable 2 2 Connect P1 of Fixture with VX712 Monitor by VGA Cable 2 3 Connect Power Cord to VX712 Monitor 2 4 Connect P3 to the Signal Generator eg Chroma2326 for verifying it after the operation being completed 2 5 Connect PC to the additional monitor P2 to LPT Cable P3 to Signal Generator P1 to VGA Cable ...

Page 36: ...ll the Myson ISP program 3 1 1 User could download ISP install file from Myson Century website www myson com tw 3 1 2 After extracting the zip file the total files list as Fig 3 1 and double click the file of setup exe to install Fig 3 1 2 3 1 3 Press Next button to continue see Fig 3 1 3 Fig 3 1 3 ...

Page 37: ...tial Do Not Copy VX712 3 1 4 Keep default setting or press Change button for selecting the path that you want and then press Next button to continue see Fig 3 1 4 Fig 3 1 4 3 1 5 Press Install button to continue see Fig 3 1 5 Fig 3 1 5 ...

Page 38: ...l Do Not Copy VX712 3 1 6 The Installer Information shows package warning press Ignore button to continue see Fig 3 1 6 Fig 3 1 6 3 1 7 Installation has finished press Finish button see Fig 3 1 7 Fig 3 1 7 Step 2 ISP security code setting ...

Page 39: ... 2 1 After installation we could find the shortcut in the setting path or the program bar default setting see Fig 3 2 1 Fig 3 2 1 3 2 2 Press Create Security File button to key in security code Adjusting bar to decrease speed of IIC bus see Fig 3 2 2 Fig 3 2 2 ...

Page 40: ...e ISP to program MCU 4 3 1 Select MTV type first load the binary or Intel hex file that you want to program into the MCU and select Auto item then press RUN button see Fig 4 3 1 4 3 2 If user changes the MTV type it must load file again or the buffer of load file will be cleared 4 3 3 CRC cyclic redundancy check the host can check CRC register s result instead of reading every byte in flash The me...

Page 41: ...Sonic Corporation Confidential Do Not Copy VX712 Check MCU CRC OK Fig 4 3 1 Step 5 Unplug and replug power cord of VX712 set and then check the OSD operation and image on srceen Step 6 At last do Memory Recall ...

Page 42: ...712 by VGA Cable 3 2 2 Connect P3 of Fixture with DVI port of VX712 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 VX712 Monitor 3 2 6 Connect PC to the additional monitor P3 DVI DVI Cable JP1 Power Adapter P2 VGA Cable P1 to LTP Cable ...

Page 43: ... 43 ViewSonic Corporation Confidential Do Not Copy VX712 3 3 DDC Key In Procedure Sep1 Select and execute DDc Key In program ...

Page 44: ... 44 ViewSonic Corporation Confidential Do Not Copy VX712 Sep2 Inpute the S N and execute Enter ...

Page 45: ... 45 ViewSonic Corporation Confidential Do Not Copy VX712 ...

Page 46: ... 46 ViewSonic Corporation Confidential Do Not Copy VX712 Sep3 Key the Enter and write the data ...

Page 47: ... 47 ViewSonic Corporation Confidential Do Not Copy VX712 Sep4 If ddc program OK and show data compare ok ...

Page 48: ... 48 ViewSonic Corporation Confidential Do Not Copy VX712 5 7 Packing For Shipping ...

Page 49: ...ANDLE1 50G 600 2 1 2 HANDLE2 50G 600 3 1 3 PE BAG 45G 76 28 V3 1 4 CD MANUAL 70G170170911A 1 5 QSG 41G780170910A 1 6 EPE COVER 45G 88609 4 1 7 MONITOR T782KKWHBDVWABP 1 8 EPE COVER 45G 88609 B 1 9 PE BAG 45G 88607 1 44G3734 1 1 10 EPS 44G3734 2 1 11 AUDIO CABLE 89G 173 56 31 1 12 POWER CORD 89G404A18N LS 1 13 SIGNAL CABLE 89G 728HAA902 1 ...

Page 50: ... 50 ViewSonic Corporation Confidential Do Not Copy VX712 6 Troubleshooting Flow Chart ...

Page 51: ...326 KR B STAND R COVER 1 14 34G1327 KS B BUCKET R COVER 1 15 40G 152509 RECYCLE LABEL 0 16 40G 152512 RECYCLE LABEL 0 17 40G 45760819A 机种标签 1 18 40G 459709 1B CARTON LABEL 1 19 40G 459709 2B S N LABEL 1 20 40G 459709 4A H V WARNING LABEL 1 21 40G 459709 5A HI POT LABEL FOR 17 LCD 1 22 40G 581 26704 唛头纸 FOR CARTON PALLET 0 23 40G 58162435A MANUAL P N LABEL 1 05 24 40G 58170918D PALLET LABEL 0 25 25...

Page 52: ...6025 11655 绝缘片 1 54 52G6025 11675 MYLAR 1 55 70G170170910A CD MANUAL 1 56 78G322A 1 L SPEAKER 1 57 78G322A 1 R SPEAKER 1 58 78G322A 1 YL SPEAKER 0 59 78G322A 1 YR SPEAKER 0 60 85G 583509 VS 泡棉 1 61 85G 662 2 SHIELD 1 62 89G 173 56 31 AUDIO CABLE 1 63 89G 728GAA902 SIGNAL CABLE 0 64 89G 728HAA902 SIGNAL CABLE 1 65 89G404A18N IS POWER CABLE 0 66 89G404A18N LS POWER CORD 1 67 95G8014 12 12 WIRE HARNE...

Page 53: ...N 680UF 25V C202 1 96 88G 30214K PHONE JACK 5PIN CN201 1 97 90G6093 1 HEAT SINK 1 98 AUPC780A7AIP AUDIO AI BOARD 99 67G 2151097NT 1UF 50V C209 1 100 67G 2151097NT 1UF 50V C210 1 101 95G 90 23 TINCOATEDCOPPER J201 0 102 95G 90 23 TINCOATEDCOPPER J202 0 103 95G 90 23 TINCOATEDCOPPER J203 0 104 95G 90 23 TINCOATEDCOPPER J204 0 105 95G 90 23 TINCOATEDCOPPER J205 0 106 95G 90 23 TINCOATEDCOPPER J206 0 ...

Page 54: ...1 135 67G305V220 3 22UF 16V C147 1 136 67G305V220 3 22UF 16V C158 1 137 67G305V220 3 22UF 16V C163 1 138 67G305V221 3 CAP EC 220U 16V C109 1 139 88G 35315F HS D SUB 15P CN105 1 140 88G 35315FHSJ CONNECTOR CN105 0 141 88G 35424F HS DVI CONN 24P CN104 1 142 93G 22 45 J 晶振 24MHz 30PF 49U S Y101 1 143 93G 22 58 H 24 576MHZ 20 PF HC 49 US Y102 1 144 AIC780KKWVWP MAIN BOARD 145 40G 457624 1B CPU LABEL 1...

Page 55: ...1 10W R107 1 176 61L0603101 CHIPR 100OHM 5 1 10W R109 1 177 61L0603101 CHIPR 100OHM 5 1 10W R110 1 178 61L0603101 CHIPR 100OHM 5 1 10W R111 1 179 61L0603101 CHIPR 100OHM 5 1 10W R136 1 180 61L0603101 CHIPR 100OHM 5 1 10W R137 1 181 61L0603101 CHIPR 100OHM 5 1 10W R158 1 182 61L0603101 CHIPR 100OHM 5 1 10W R160 1 183 61L0603101 CHIPR 100OHM 5 1 10W R163 1 184 61L0603101 CHIPR 100OHM 5 1 10W R165 1 ...

Page 56: ... 1 215 61L0603103 CHIPR 10KOHM 5 1 10W R212 1 216 61L0603103 CHIPR 10KOHM 5 1 10W R217 1 217 61L0603103 CHIPR 10KOHM 5 1 10W R218 1 218 61L0603103 CHIPR 10KOHM 5 1 10W R221 1 219 61L0603103 CHIPR 10KOHM 5 1 10W R222 1 220 61L0603105 CHIPR 1MOHM 5 1 10W R203 1 221 61L0603202 CHIPR 2KOHM 5 1 10W R197 1 222 61L0603202 CHIPR 2KOHM 5 1 10W R198 1 223 61L0603202 CHIPR 2KOHM 5 1 10W R199 1 224 61L0603220...

Page 57: ...W R220 1 255 61L0603682 CHIP 6 8K OHM 1 10W R176 1 256 61L0603750 CHIPR 75OHM 5 1 10W R183 1 257 61L0603750 CHIPR 75OHM 5 1 10W R186 1 258 61L0603750 CHIPR 75OHM 5 1 10W R190 1 259 61L1206000 CHIPR 0OHM 5 1 4W L112 1 260 65G0603100 31 CHIP 10PF 50V NPO C125 1 261 65G0603100 31 CHIP 10PF 50V NPO C127 1 262 65G0603100 31 CHIP 10PF 50V NPO C128 1 263 65G0603102 31 1000PF 50V NPO C102 1 264 65G0603102...

Page 58: ...68 1 295 65G0603104 32 CHIP 0 1UF 50V X7R C169 1 296 65G0603104 32 CHIP 0 1UF 50V X7R C170 1 297 65G0603104 32 CHIP 0 1UF 50V X7R C171 1 298 65G0603104 32 CHIP 0 1UF 50V X7R C172 1 299 65G0603104 32 CHIP 0 1UF 50V X7R C176 1 300 65G0603104 32 CHIP 0 1UF 50V X7R C180 1 301 65G0603105 12 CHIP CAP 1UF C118 1 302 65G0603105 17 CHIP 1UF 16V Y5V C114 1 303 65G0603105 17 CHIP 1UF 16V Y5V C177 1 304 65G06...

Page 59: ...6Z601 M CHIP BEAD 0805 600OHM L115 0 333 71G 59C300 0 8X1 6 100M 30OHM L101 1 334 71G 59C300 0 8X1 6 100M 30OHM L105 1 335 71G 59C300 0 8X1 6 100M 30OHM L108 1 336 73G 60186 CHIP INDUCTOR R194 1 337 93G 39147 TZMC5V6 ZD103 0 338 93G 39147 TZMC5V6 ZD104 0 339 93G 39147 TZMC5V6 ZD105 0 340 93G 39147 TZMC5V6 ZD106 0 341 93G 39147 TZMC5V6 ZD107 0 342 93G 39147 TZMC5V6 ZD108 0 343 93G 39147 TZMC5V6 ZD1...

Page 60: ...374 81G 14 5 GU SMD LED Y G 5K63 G6Y2 D2 DP001 1 375 715G1749 1 PCB BOARD 1 376 PWPC1742HDV2P POWER BOARD 377 PW1742HDV2SMTP POWER BOARD 1 378 33G801712A WAFER CON102 1 379 33G8021 2D U CON 2PR A CON201 1 380 33G8021 2D U CON 2PR A CON202 1 381 33G8021 2D U CON 2PR A CON203 1 382 33G8021 2D U CON 2PR A CON204 1 383 33G8021 2D AC WAFER CON201 0 384 33G8021 2D AC WAFER CON202 0 385 33G8021 2D AC WAF...

Page 61: ... MU C902 1 415 65G306M4722BM 4700PF 20 400VAC C912 0 416 65G306M4722BP 4700PF 20 400VAC C912 1 417 67G215L102 3N KY16VB1000M 1 10 20 C922 0 418 67G215L102 3N KY16VB1000M 1 10 20 C923 0 419 67G215L102 3R LOW ESR 1000UF 20 16V C922 1 420 67G215L102 3R LOW ESR 1000UF 20 16V C923 1 421 67G215S10115H 100UF 450WV 105 18 36M C904 0 422 67G215S10115K LOW ESR EC 100uF 450V C904 1 423 67G215S10115N 1000 450...

Page 62: ...SS Y 1 455 705G 780 8704P CN901 ASS Y 1 456 PW1742HDV2SMTP POWER BOARD 457 PW1742HDV2AIP POWER BOARD FOR AI 1 458 56G 622 1 REGULATOR CONTROLLER BA9 U201 1 459 57G 417 4 PMBS3904 PLILIPS Q205 1 460 57G 417 4 PMBS3904 PLILIPS Q206 1 461 57G 417 6 PMBS3906 PNP Q207 1 462 57G 417 6 PMBS3906 PNP Q208 1 463 57G 600 37 STS6PF30L SO 8 Q203 0 464 57G 600 37 STS6PF30L SO 8 Q204 0 465 57G 760 4 DTA144WKA Q2...

Page 63: ... 61L0603512 CHIP 5 1K OHM 1 10W R202 1 496 61L0603512 CHIP 5 1K OHM 1 10W R203 1 497 61L0603681 CHIP 680 OHM 1 10W R236 1 498 61L0603681 CHIP 680 OHM 1 10W R237 1 499 61L0603911 CHIP 910 OHM 1 10W R234 1 500 61L0603911 CHIP 910 OHM 1 10W R235 1 501 61L1206000 4 CHIP 0OHM 4A F201 1 502 61L1206101 CHIP 100 OHM 5 1 4W R912 1 503 61L1206103 CHIP 10KOHM 5 1 4W R913 1 504 61L1206105 CHIP 1MOHM 5 1 4W R9...

Page 64: ...T BZT52 C11 SOD 123 D204 1 533 93G 39S 8 T RLZ11B LLDS D203 0 534 93G 39S 8 T RLZ11B LLDS D204 0 535 93G 39S 16 T ZENER DIODE SML4737A ZD904 0 536 93G 39S 19 T PTZ7 5B ZD904 1 537 93G 39S 20 T RLZ22BLLDS ROHM ZD901 1 538 93G 39S 23 T GLZ22B ZD901 0 539 93G2004 2A SM240A DO 214AC 2A 40V D201 0 540 93G2004 2A SM240A DO 214AC 2A 40V D202 0 541 93G3004 1 SMAL340XXXRO D201 0 542 93G3004 1 SMAL340XXXRO ...

Page 65: ... 6KOHM 1 1 4W R923 1 576 61G 60230352T 30KOHM 5 1 6W R201 1 577 61G 60251352T 51KOHM 5 1 6W R240 1 578 61G 60251352T 51KOHM 5 1 6W R241 1 579 61G175L47052T 47OHM 5 1 2W R920 1 580 61G175L47052T 47OHM 5 1 2W R921 1 581 61L214Y10552T 1M 1 4W R904 1 582 61L214Y10552T 1M 1 4W R905 1 583 61L214Y10552T 1M 1 4W R906 1 584 61L214Y10552T 1M 1 4W R907 1 585 64G700J1040AT 0 1UF 50V PEN C929 1 586 65G 2K152 1...

Page 66: ...95G 90 23 TINCOATEDCOPPER J202 0 614 95G 90 23 TINCOATEDCOPPER J204 0 615 95G 90 23 TINCOATEDCOPPER J206 0 616 95G 90 23 TINCOATEDCOPPER J207 0 617 95G 90 23 TINCOATEDCOPPER J208 0 618 95G 90 23 TINCOATEDCOPPER J209 0 619 95G 90 23 TINCOATEDCOPPER J210 0 620 95G 90 23 TINCOATEDCOPPER J211 0 621 95G 90 23 TINCOATEDCOPPER J212 0 622 95G 90 23 TINCOATEDCOPPER J213 0 623 95G 90 23 TINCOATEDCOPPER J214...

Page 67: ...07 2 SH HEAT SINK 1 653 M1G1730 8128 SCREW 1 654 705G 780 8704P CN901 ASS Y 655 87G 501 12 CJ AC SOCKET CN901 1 656 87G 501 12 RF AC SOCKET SS 120 PCB 1 5 CN901 0 657 95G 900567 WIRE HARNESS 1 658 96G 29 6 SHRINK TUBE UL CSA 1 659 705G782KB3459R BEZEL ASS Y 660 5G6015 1 RUBBER FOR RESA HOLE 4 661 5G6020 1 电晶体垫片 2 662 5G808D 1 电晶体垫片 4 663 11G 165 1 线夹 2 664 12G 394600 FOOT PORON 6 665 15G8019 1 LOC...

Page 68: ...G410A18N LS POWER CORD 1 8 M1G1730 6128 CR3 SCREW XN01C 2 9 M1G1730 6128 CR3 SCREW XN01D 2 10 750GLU70G01 42 M170EG01 17 LCD PANEL 1 11 J40G170T709 2B ID 1 12 56G1125543AWW MTV512GMV64 U104 1 13 61G0603561 RST CHIP 560R 1 10W 5 R236 1 14 61G0603561 RST CHIP 560R 1 10W 5 R237 1 Diversity of T782KKWHBDVUABP compared with T782KKWHBDVWABP Item ViewSonic P N Ref P N Description Location Universal numbe...

Page 69: ... 69 ViewSonic Corporation Confidential Do Not Copy VX712 9 Exploded Diagram And Spare Parts List ...

Page 70: ...G6025 11655 1 14 POWER BOARD PWPC1742AUV1P 1 15 MYLAR 52G6025 11675 1 16 SHIELD 85G 662 2 1 17 SCREW M1G2130 4 47 4 18 BUCKET 34G1322 KS 2B 1 19 RUBBER FOR RESA HOLE 5G6015 1 4 20 BUCKET R COVER 34G1327 KS B 1 21 SPEAKER 78G322A 1 L 2 22 SCREW Q1G1030 12128 4 23 LOCK METAL 15G8019 1 1 24 SCREW M1G1030 6128 2 25 KEY BOARD KEPC780KK9P 1 26 STAND F COVER 34G1325 KR B 1 27 STAND 34G1323 KD B 1 28 HING...

Page 71: ...l and back cover as showed in the following the picture 7 8 9 10 11 12 7 Disassemble the 2 fixed screws and the 2 pins of the KEY board and remove the back cover as showed in the following the picture 13 14 15 8 Disassemble the fixed screws in the shield remove the shield as the direction arrowhead showed refer to the following picture 16 9 Disassemble the 6 screws and 4 pins of the PWPC board rem...

Page 72: ... 72 ViewSonic Corporation Confidential Do Not Copy VX712 9 3 Show pictures Picture 1 Picture 2 Picture 3 Picture 4 Picture 5 Picture 6 Picture 7 Picture 8 Picture 9 Picture 10 ...

Page 73: ... 73 ViewSonic Corporation Confidential Do Not Copy VX712 Picture 11 Picture 12 Picture 13 Picture 14 Picture 15 Picture 16 ...

Page 74: ... 74 ViewSonic Corporation Confidential Do Not Copy VX712 Picture 17 Picture 19 Picture 18 Picture 20 Picture 21 ...

Page 75: ... 75 ViewSonic Corporation Confidential Do Not Copy VX712 11 Block Diagram Scaler RTD2523 Include ADC OSD etc ...

Page 76: ... 1 16W LEFT_KEY C120 0 1uF C ENTER_KEY R106 100 1 16W R117 NC R218 10K 1 16W 12V R122 4 7K 1 16W 12V R102 NC R119 1K 1 16W B R112 1K 1 16W R121 220 1 16W 2 5V 2N3906 added 082704 C109 100uF 16V 12V BL_ADJ C112 0 1uF MCU_VCC BRIGHTNESS R101 4 7K 1 16W Q101 PMBS3904 3 2 1 R118 NC R116 NC C101 NC 5V C104 0 001uF 5V OUT L U102 RT9164 3 2 1 VI VO GND OUT R R108 NC 0805 VOL_ADJ L113 NC C180 0 1uF Q103 P...

Page 77: ...T 3 1 2 CLK Modify 082704 DATA0 DATA0 RTD_SCLK VGA_G DDC_SCL CR CR C142 0 047uF C164 0 1uF C155 0 047uF C151 0 047uF TMDS_AVCC CONNECT DDC_SDA D112 NC WPSA 1005 5 A C141 0 1uF DDC2_SCL RXE0 VGA5V RTD_SCSB DATA2 RXE2 C175 NC L110 600 OHM DVI_POWER DATA0 DDC2_SCL C166 22pF C174 NC BUS_POWER RXOC C150 0 1uF VOLUME DGND RXO3 DATA2 RXO3 R206 100 1 16W RTD_SDIO3 VGA_R DDC_SCL C160 0 1uF DDC2_SCL CR VGA_...

Page 78: ... 10K 1 16W R211 10K 1 16W R145 4 7K 1 16W R163 100 1 16W RTD_SDIO3 MCU_VCC VSIN EEPROM_WP R162 NC R132 10K 1 16W R135 NC MCU MTV512 T1 ViewSonic 3 4 Thursday December 02 2004 Title Size Document Number Rev Date Sheet of R147 4 7K 1 16W R151 4 7K 1 16W LED_BLUE R160 100 1 16W R178 4 7K 1 16W MCU_VCC R155 4 7K 1 16W DDC_SDA MCU_VCC C126 0 1uF MCU_VCC RTD_SCLK MENU_KEY RIGHT_KEY MUTE D101 NC R165 100...

Page 79: ...1U 25V R224 2K R213 3 9K C218 22P 3KV C213 0 15U 250V R228 2K is signal GND Q211 2SC5706 1 2 3 C216 22P 3KV Q210 2SC5706 1 2 3 C211 1U 25V L204 73L 174 30 YS 1 4 2 3 R230 2K L201 150UH D202 SMAL240 OR SR24 R210 12K C221 0 47U 25V R240 51K D208 RLS4148 PWPC1742HDV1 715L1075 B V1 A 2 FOR HYDIS 100 INVERTER AOC Top Victory Electronics Co Ltd Custom 2 2 Monday May 24 2004 Title Size Document Number Re...

Page 80: ...2 1 4 2 3 R904 1M 1 4W L904 R923 3 6K 1 4W 12V C921 0 001uF 500V R925 1K 1 4W 5V 12V ZD901 MTEJ20B C924 470uF 16V GND C925 470uF 16V GND R928 1K 1 4W C907 0 1uF R914 24K 1 4W SG6841 IC901 SG6841 1 3 4 7 2 5 6 8 73L 174 26 T PWPC1742HDV1 715L1075 B V1 A 1 POWER 12V 5V OUTPUT AOC Top Victory Electronics Co Ltd 2 2 Monday May 24 2004 Title Size Document Number Rev Date Sheet of C926 0 1uF D903 1N4148...

Page 81: ... 81 ViewSonic Corporation Confidential Do Not Copy VX712 12 6 Audio ...

Page 82: ... 82 ViewSonic Corporation Confidential Do Not Copy VX712 13 PCB Layout Diagrams 13 1 MAIN BOARD PCB TOP VIEW 13 2 MAIN BOARD PCB BUTTON VIEW ...

Page 83: ... 83 ViewSonic Corporation Confidential Do Not Copy VX712 13 3 KEYBOARD TOP VIEW 13 4 KEYBOARD BUTTON VIEW ...

Page 84: ... 84 ViewSonic Corporation Confidential Do Not Copy VX712 13 5 POWER PCB TOP VIEW ...

Page 85: ... 85 ViewSonic Corporation Confidential Do Not Copy VX712 13 6 POWER PCB BUTTON VIEW ...

Page 86: ... 86 ViewSonic Corporation Confidential Do Not Copy VX712 13 7 AUDIO PCB BUTTON VIEW ...

Page 87: ...ription 4 Circuit Description 5 Adjust Procedure 6 Trouble Shooting Flow Chart 7 Recommended Spare Parts List 8 Exploded Diagram and Spare Parts List 9 Block Diagram 10 Schematic Diagrams 11 PCB Layout Diagrams B Are you satisfied with the VX712 Service Manual Item Excellent Good Fair Bad 1 Service Manual Content 2 Service Manual Layout 3 The form and listing C Do you have any opinion and suggesti...

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