ViewSonic VA1721wmb - 17" LCD Monitor User Manual Download

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ViewSonic Corporation

Confidential - Do Not Cop

VA1721wmb

Manufacture Date: Apr-02-07

Service Manual

ViewSonic VA1721wmb

Model No VS11605

17” Color TFT LCD Display

Summary of Contents for VA1721wmb - 17" LCD Monitor

Page 1: ...1 ViewSonic Corporation Confidential Do Not Cop VA1721wmb Manufacture Date Apr 02 07 Service Manual ViewSonic VA1721wmb Model No VS11605 17 Color TFT LCD Display...

Page 2: ...r ViewSonic Corporation shall not be liable for technical or editorial errors or omissions contained herein nor for incidental or consequential damages resulting from furnishing this material or the p...

Page 3: ...2 Specification 7 3 Front Panel Control And Indicators 9 4 Circuit Description 15 5 Adjustment Procedure 23 6 Troubleshooting Flow Chart 42 7 Recommended Spare Parts List 43 8 Exploded Diagram And Sp...

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 clo...

Page 5: ...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 grasp...

Page 6: ...6 ViewSonic Corporation Confidential Do Not Cop VA1721wmb 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: ...an 367 2mm H x 229 5mm V 14 5 H x 9 0 V Operating conditions Temperature Humidity Altitude 32 F to 104 F 0 C to 40 C 10 C to 90 non condensing To 10 900 feet Storage conditions Temperature Humidity Al...

Page 8: ...TOR 1 5 6 10 11 15 SIGNAL LEVEL 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...

Page 9: ...9 ViewSonic Corporation Confidential Do Not Cop VA1721wmb 3 Front Panel Function Controls And Indicators...

Page 10: ...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 buttons 5 To sa...

Page 11: ...n G and blue B The factory setting for this product is 6500K 6500 Kelvin sRGB This is quickly becoming the industry standard for color management with support being included in many of the latest appl...

Page 12: ...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 vert...

Page 13: ...screen image 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 displays the Resolution Notice menu...

Page 14: ...Specifications of this manual SHORT CUTS FUNCTION FROM THE BUTTONS 1 Main Menu 2 Auto Image Adjust to immediately activate Brightness and Contrast menu It should be change to Brightness or Contrast OS...

Page 15: ...IN BOARD BLOCK 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 CCF...

Page 16: ...s 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...

Page 17: ...I flash serial data output Input w 5V tolerant 71 CSZ SPI flash chip select output 72 SCK SPI flash serial select output 73 SDI SPI flash serial data input output 65 DDCA_SDA RS232_TX DDC data for ana...

Page 18: ...the serial output pin SO will remain in a high impedance state SO OUTPUT Serial Data Output WP INPUT Write Protect A hardware program erase protection for all or partial of memory array When the WP p...

Page 19: ...of each pin and the inside circuit diagram are as follows Pin Name Function 1 GND Ground 2 COMP Voltage feedback pin same as the COMP pin in UC384X By connecting a photo coupler to close the control l...

Page 20: ...age protection Over voltage protection over current protection and etc The function of each pin and the circuit diagram inside are as follows PIN Descriptions Pin Names Description 1 DRV1 Drive output...

Page 21: ...tion 10 ENA ON OFF control of IC 11 LCT Timing capacitor to set internal PWM dimming frequency and also a pin for analog dimming selection 12 SSECMP Capacitor for soft start time and loop compensation...

Page 22: ...22 ViewSonic Corporation Confidential Do Not Cop VA1721wmb Block Diagram...

Page 23: ...ment 1 Adjust of White Balance 1 How to do the CA 210 MEM Channel setting A Reference to CA 210 user guide B Use MODE key to modify xyY value and use MEMORY CH key to modify the TEXT description Follo...

Page 24: ...G 100 6 Adjust the BLUE of color1 on factory window until CA 210 indicator reached the value B 100 7 Repeat above procedure item 4 5 6 until CA 210 RGB value meet the tolerance 100 5 B Adjust 7500 co...

Page 25: ...til CA 210 indicator reached the value B 100 7 Repeat above procedure item 4 5 6 until CA 210 RGB value meet the tolerance 100 5 E Adjust SRGB color temperature 1 Switch the CA 210 to RGB Mode with pr...

Page 26: ...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 75Hz 800 600 H 53 7kHz...

Page 27: ...rtical position of video should be adjustable to be within the screen frame Figure 3 4 RGB Color Performance RGB Color Intensities Contrast of each R G B color should be normal Figure 4 5 6 5 Screen U...

Page 28: ...ration Confidential Do Not Cop VA1721wmb Horizontal Vertical Thickness Pattern R Color Pattern Figure 4 Figure 3 G Color Pattern Figure 5 B Color Pattern Figure 6 Full White Pattern Figure 7 Dark Scre...

Page 29: ...the latest version DDC Test Pattern EDID program Make sure it can pass test program Fine Tune and Sharpness Test Signal 1440 900 60Hz Test Pattern Line Moire Pattern Check and see if the image has noi...

Page 30: ...B 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...

Page 31: ...es 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...

Page 32: ...for verifying it after the operation being completed 2 6 Connect PC to the additional monitor 3 Firmware Upgrade Procedure Step 1 Let Monitor TSUM series set to be connected with AC cable and VGA cabl...

Page 33: ...t parameters relative to WP is followed bellow Step 4 Click Read button Select the object bincode on your corresponding directory Step 5 Click Auto button Be sure that function of Erase Device File Ar...

Page 34: ...F W has been completed Verify Ok message will be shown on the right TextBox and Flash Status will be 8C in the right bottom of window Step 7 Unplug and replug power cord of Monitor TSUM series set an...

Page 35: ...onitor TSUM Series by VGA Cable 3 2 2 Connect P1 of Fixture with Printer port of PC by LPT Cable 3 2 3 Plug Power Adapter to Fixture 3 2 4 Connect Power Cord to Monitor TSUM Series 3 2 5 Connect PC to...

Page 36: ...36 ViewSonic Corporation Confidential Do Not Cop VA1721wmb...

Page 37: ...37 ViewSonic Corporation Confidential Do Not Cop VA1721wmb Sep2 Inpute the S N and execute Enter...

Page 38: ...38 ViewSonic Corporation Confidential Do Not Cop VA1721wmb...

Page 39: ...39 ViewSonic Corporation Confidential Do Not Cop VA1721wmb Sep3 Key the Enter and write the data...

Page 40: ...40 ViewSonic Corporation Confidential Do Not Cop VA1721wmb Sep4 If ddc program OK and show data compare ok...

Page 41: ...41 ViewSonic Corporation Confidential Do Not Cop VA1721wmb 5 7 Packing Procedure...

Page 42: ...42 ViewSonic Corporation Confidential Do Not Cop VA1721wmb 6 Troubleshooting Flow Chart...

Page 43: ...N LABEL 2 16 45G 77 3 TRANSPARENT SHEET 173 17 52G 1185 24 VSC YELLOW TAPE 65 18 52G 1211 A ALUMINIUM TAPE 1 19 52G 2191 D TAPE 75 20 78G 311700 KL SPEAKER 4OHM 1 5W 1 21 78G 311700 KR SPEAKER 4OHM 1...

Page 44: ...CARTON 1 63 J45G 76 28V3A PE BAG FOR MANUAL CARD 1 64 J45G 88606 R PE BAG FOR BASE 1 65 J45G 88607 R PE BAG FOR MONITOR 1 66 J50G 600 5 HANDLE 1 1 67 J50G 600 6 HANDLE 2 1 68 J52G6020VSC 1 PROTECT FI...

Page 45: ...C702 1 107 88G 35315F H D SUB 15PIN CN405 1 108 93G 22 53 CRYSTAL 14 31818MHZ HC 4 X401 1 109 56G 562700 TSUM16AK LF 1 U401 1 110 56G 563 21 IC AP1084K33LA U702 1 111 56G1133 32 IC M24C04 WMN6TP SO8...

Page 46: ...1KOHM 5 1 10W R701 1 152 61G0603103 CHIPR 10KOHM 5 1 10W R404 1 153 61G0603103 CHIPR 10KOHM 5 1 10W R406 1 154 61G0603103 CHIPR 10KOHM 5 1 10W R408 1 155 61G0603103 CHIPR 10KOHM 5 1 10W R412 1 156 61...

Page 47: ...5 1 10W R725 1 197 61G0603510 RST CHIP 51R 1 10W 5 R702 1 198 61G0603513 CHIP 51K OHM R723 1 199 61G0603560 RST CHIP 56R 1 10W 5 R434 1 200 61G0603560 RST CHIP 56R 1 10W 5 R435 1 201 61G0603560 RST C...

Page 48: ...UF 50V X7R C718 1 241 65G0603220 31 CHIP 22PF 50V NPO C421 1 242 65G0603220 31 CHIP 22PF 50V NPO C423 1 243 65G0603221 32 220PF 50V X7R C443 1 244 65G0603224 32 CHIP 0 22UF 50V X7R C425 1 245 65G06032...

Page 49: ...OARD 287 95G 900711 JT WIRE HARNESS GND1 1 288 33G8023 2A H WAFER 2 0MM 2P CN003 1 289 33G8023 2A H WAFER 2 0MM 2P CN004 1 290 33G8023 6A H WAFER 2 0MM 6P CN002 1 291 33G802314A H WAFER 2 0MM 14P CN00...

Page 50: ...LR LINE FILTER L901 1 333 80GL15T 32 T X FMR 770UH SRW24LQ TXXH T901 1 334 80GL19T 18 DN X FMR100 3UH TK 2048M 10 PT801 1 335 87G 501 37 S AC INLET ST 01DG B2A K CN901 1 336 93G 50460 28 BRIDGE KBP20...

Page 51: ...0 RST CHIP 22R 1 8W 5 R807 1 377 61G0805243 1F RST CHIPR 2 43 KOHM 1 R936 1 378 61G0805304 RST CHIPR 300 KOHM 5 R802 1 379 61G0805330 0F RST CHIPR 330 OHM 1 1 R827 1 380 61G0805330 0F RST CHIPR 330 OH...

Page 52: ...22 CHIP 0 01UF 25V X7R 0805 C906 1 422 65G0805103 22 CHIP 0 01UF 25V X7R 0805 C911 1 423 65G0805104 32 CHIP 0 1UF 50V X7R 0805 C909 1 424 65G080510422W CAP 0805 0 1UF K 25V X7R C808 1 425 65G08051042...

Page 53: ...ER J901 1 466 95G 90 23 TINCOATEDCOPPER J902 1 467 95G 90 23 TINCOATEDCOPPER J903 1 468 95G 90 23 TINCOATEDCOPPER J904 1 469 95G 90 23 TINCOATEDCOPPER J905 1 470 95G 90 23 TINCOATEDCOPPER J906 1 471 9...

Page 54: ...niversal number Q ty 1 89G402A18N LS POWER CORD 1 2 J41G780170918A SELL AMERICAN CARD 1 Diversity of T77HM5MT9WVSAJ compared with T77HM5MB9WVSAJ Item ViewSonic P N Ref P N Description Location Univers...

Page 55: ...55 ViewSonic Corporation Confidential Do Not Cop VA1721wmb 8 Exploded Diagram And Spare Parts List...

Page 56: ...56 ViewSonic Corporation Confidential Do Not Cop VA1721wmb Packing For Shipping...

Page 57: ...ure 5 5 Use equipment or abandoned IC card to prize up the bezel through the bottom flute and rip up the back cover downwards as showed in the following the picture 6 7 8 9 6 Disassemble the 6 screws...

Page 58: ...58 ViewSonic Corporation Confidential Do Not Cop VA1721wmb Picture 3 Picture 4 Picture 5 Picture 6 Picture 7 Picture 8 Picture 9 Picture 10...

Page 59: ...59 ViewSonic Corporation Confidential Do Not Cop VA1721wmb Picture 11 Picture 12 Picture 13 Picture 14 Picture 15 Picture 16 Picture 17 Picture 18...

Page 60: ...60 ViewSonic Corporation Confidential Do Not Cop VA1721wmb Picture 19...

Page 61: ...61 ViewSonic Corporation Confidential Do Not Cop VA1721wmb 10 Block Diagram...

Page 62: ...PB 12 23 12V DDC_WP B3 3 INPUT RIN GIN BIN VSYNC GNDR GNDG GNDB DET_VGA HSYNC SOG B CLK DET_DVI CLK R G R B G DDCA_SDA DDCA_SCL DDCD_SDA DDCD_SCL 5V DDC_WP VLCD PC5V VLCD_12V TOP A TSUM16AK 1 B 1 5 Th...

Page 63: ...G1558 1 VS X 3 061220 R707 U702 AIC1084 33PM 3 1 2 VIN ADJ VOUT R722 NC R704 100R 1 10W 5 Q702 PZT2907A H2 NC 1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9 GND 1UF C707 100uF 25V C712 100uF 25V R705 47R 1 10W...

Page 64: ...5 28 9 10 11 12 13 14 15 16 26 29 17 18 19 20 21 22 23 24 27 DAT2 DAT2 2 4shield DAT4 DAT4 DDC SCL DDC SDA VSYNC R HSYNC DAT1 DAT1 1 3shield DAT3 DAT3 5V SYNC GND HPD G RGB GND DAT0 DAT0 0 5shield DAT...

Page 65: ...1 KEY3 DET_VGA 3 GNDR 3 POWER GPO 0 4 PA3 R431 NC R477 NC Q405 NC E B C 5V 2 3 PA15 VCC3 3 2 PA14 AUDIO_STBY SOG 3 FB405 600 OHM 1 2 VSYNC 3 Option 5V KEY_LEFT PA2 R403 390R 1 10W 1 PA5 R489 NC OSP 5...

Page 66: ...CLKN BA2P C106 NC PB13 ESP LVB3M PA16 VLCD_12V 2 VLCD_12V LVA0P RA1N BA3N PB 0 5 4 LVACKP BR0N PB20 LVA0M BB1P GPOO2 BB1P PA6 LVB1P GB1P GB1P PB 12 23 CLKAN PB 6 11 RXO3 BB3N R103 NC RXE0 LVB0P PA15 P...

Page 67: ...2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 DRV1 VDDA TIMER DIM ISEN VSEN OVPT NC1 NC2 ENA LCT SSTCMP CT GNDA DRV2 PGND R808 47K 1 4W C822 0 001uF C815 0 047uF R803 10K 1 4W C809 0 022uF 25V C808 0 1uF25V R...

Page 68: ...02 EL817MA 1 2 4 3 3 3V 12V 12V VAR901 NC C902 1000pF C905 100uF 450V R924 100 1 4W C910 22uF 50V Pitch 2 54mm ON OFF D902 31DQ06FC3 DIM PID R931 1K 1 8W R929 1K 1 4W C921 470uF 25V R900 680K 1 4W R92...

Page 69: ...SPKR_L DP1 LED 1 3 2 A_GND A_GND KEY_LEFT SW5 KEY_RIGHT B KEY PAD AOC Top Victory Electronics Co Ltd A 8 8 Tuesday March 21 2006 Title Size Document Number Rev Date Sheet of GND GND KEY_AUTO CN4 SPK...

Page 70: ...70 ViewSonic Corporation Confidential Do Not Cop VA1721wmb 12 PCB Layout Diagram 12 1 MAIN BOARD PCB TOP VIEW...

Page 71: ...71 ViewSonic Corporation Confidential Do Not Cop VA1721wmb 12 2 MAIN BOARD PCB BUTTON VIEW...

Page 72: ...72 ViewSonic Corporation Confidential Do Not Cop VG1721wm VA1721wm 12 3 POWER PCB TOP VIEW...

Page 73: ...73 ViewSonic Corporation Confidential Do Not Cop VG1721wm VA1721wm 12 4 POWER PCB BUTTON VIEW...

Page 74: ...74 ViewSonic Corporation Confidential Do Not Cop VA1721wmb 12 5 KEY BOARD TOP VIEW 12 6 KEY BOARD BUTTON VIEW...

Page 75: ...75 ViewSonic Corporation Confidential Do Not Cop VA1721wmb 12 7 POWER PCB TOP BUTTON VIEW Q...

Page 76: ...tors 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...

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