ViewSonic VS10047 Service Manual
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ViewSonic VS10047 Service Manual

ViewSonic VS10047 Service Manual

17” color tft lcd display
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Service Manual

ViewSonic VE710s/b-21
VA721
Model No. VS10047
17" Color TFT LCD Display
(VE710s/b-2_VA721_SM_770_1b Rev.1b Nov. 2004)
ViewSonic 381 Brea Canyon Road, Walnut, California 91789 USA - (800) 888-8583

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  • Page 1: Service Manual

    Service Manual ViewSonic VE710s/b-21 VA721 Model No. VS10047 17” Color TFT LCD Display (VE710s/b-2_VA721_SM_770_1b Rev.1b Nov. 2004) ViewSonic 381 Brea Canyon Road, Walnut, California 91789 USA - (800) 888-8583...

  • Page 2: Revision History

    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.

  • Page 3: Table Of Contents

    4. Circuit Description 5. Adjusting 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 Confidential - Do Not Copy ViewSonic Corporation VE710s/b-2 VA721...

  • Page 4: Precautions And Safety Notices

    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. Please refer to user's manual for additional instructions on using this product. Confidential - Do Not Copy ViewSonic Corporation VE710s/b-2 VA721...

  • Page 5: Specification

    10. 800 x 600 @ 75Hz, 46.9kHz 11. 800 x 600 @ 72Hz, 48.1kHz 12. 800 x 600 @ 85Hz, 53.7kHz 13. 832 x 624 @ 75Hz, 49.7kHz 14. 1024 x 768 @ 60Hz, 48.4kHz Confidential - Do Not Copy ViewSonic Corporation VE710s/b-2 VA721...
  • Page 6 8.GND 13.H.SYNC 4.NC 9. +5V 14.V.SYNC 5.GND 10.GND 15.SCL SIGNAL LEVEL CONNECTOR SIGNAL DESCRIPTION 0.7vp-p(VIDEO) GREEN 0.7vp-p(VIDEO) BLUE 0.7vp-p(VIDEO) H/SYNC TTL positive or negative V/SYNC TTL positive or negative DDC1/2B DDC1/2B Confidential - Do Not Copy ViewSonic Corporation VE710s/b-2 VA721...

  • Page 7: Front Panel Function Control Description

    Green = ON Contrast adjustment control Orange = Power Saving screen. Also a shortcut to Auto Image Adjust. Displays the Main Menu Power or exits the control screen On/Off and saves adjustments. Confidential - Do Not Copy ViewSonic Corporation VE710s/b-2 VA721...
  • Page 8 • 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 dislay.) Confidential - Do Not Copy ViewSonic Corporation VE710s/b-2 VA721...
  • Page 9 — Adds red to the screen image for warmer white and 6500K richer red. Default setting. — Adds green to the screen image for a darker color. 5400K Confidential - Do Not Copy ViewSonic Corporation VE710s/b-2 VA721...
  • Page 10 Vertical moves the screen image up and down. (Horizontal Size) adjusts the width of the screen image. H. Size Vertical size is automatic with your LCD dislay. NOTE: Confidential - Do Not Copy ViewSonic Corporation VE710s/b-2 VA721...
  • Page 11 OSD Timeout screen is displayed. For example, with a “15 second” setting, if a control is not pushed within 15 seconds, the display screen disappears. Confidential - Do Not Copy ViewSonic Corporation VE710s/b-2 VA721...
  • Page 12 [1] + [▼ ▼ ▼ ▼ ] + [▲ ▲ ▲ ▲ ] White Balance. (Keep pushing 5 sec) [1] + [▼ ▼ ▼ ▼ ] Power Lock [1] + [▲ ▲ ▲ ▲ ] OSD Lock Confidential - Do Not Copy ViewSonic Corporation VE710s/b-2 VA721...

  • Page 13: Circuit Description

    APLL VDD Power for multi-phase PLL (3.3V) PLL TEST1 Test Pin 1 / IRQ# 3.3V tolerance PLL TEST2 Test Pin 2/Power-on-latch for crystal out Frequency APLL GND Ground for multi-phase PLL Confidential - Do Not Copy ViewSonic Corporation VE710s/b-2 VA721...
  • Page 14 BGRN [2] BRED [7] / BR3P BR3P TOCP BRED [7] BRED [7] BRED [6] / BR3N BR3N TOCN BRED [6] BRED [6] BRED [5] / BR2P BR2P TOBP BRED [5] BRED [5] Confidential - Do Not Copy ViewSonic Corporation VE710s/b-2 VA721...
  • Page 15 TCON [8] / V [3] V [3] AGRN [1] TCON [8] (1), (7), (8) V [3] TCON [7] / V [4] V [4] AGRN [0] TCON [7] (1), (7), (8) V [4] Confidential - Do Not Copy ViewSonic Corporation VE710s/b-2 VA721...

  • Page 16: Tcon [0]

    PWM1 / TCON [7] PWM1 / TCON [7] (1), (2), (3), (5), (8), PWM0 / REFCLK PWM0 / (In / out) test pin for DCLK / (2), (9) Video8 even-odd signal Confidential - Do Not Copy ViewSonic Corporation VE710s/b-2 VA721...

  • Page 17: Tcon [1]

    In 3.3V power system, the VDD and VDD3 are connected to 3.3V power, all output pins swing from 0~3.3V, HSYNC, VSYNC and open drain pin can accept 0~5V input range, other pins must be kept below 3.3V. And the ADC conversion range is 3.3V. Confidential - Do Not Copy ViewSonic Corporation VE710s/b-2 VA721...
  • Page 18 There are two signals to control the inverter which come from system. Logic “high” level which send to I901 is turn on the inverter. BRI signal control brightness by DC level which was integral from PWM signal. Confidential - Do Not Copy ViewSonic Corporation VE710s/b-2 VA721...

  • Page 19: Adjusting Procedure

    (2) Press “ ▲ ” key move cursor to “White Balance”, Press key do white balance adjustment. (3) Press “ ▼ ” key move cursor to “Color Temerature Adjust”, Press key, Then OSD will display Fig.2 Confidential - Do Not Copy ViewSonic Corporation VE710s/b-2 VA721...
  • Page 20 (b). Change to each mode in turn and wait for the monitor finish auto-alignment and save process before change to next mode. (c). Until all of modes are agjusted, exit OSD menu and press PWR OFF to exit factory mode. Confidential - Do Not Copy ViewSonic Corporation VE710s/b-2 VA721...
  • Page 21 When you receive the monitor , please check the firmware version is 11-23-04A. If not , please following procedure to upgrade to the latest version . 1. Equipment needed : VA721/VE510s-2/VE710b-2 PC ( Personal computer ) LPT cable Fixture (LM5ISP) Firmware upgrade program Confidential - Do Not Copy ViewSonic Corporation VE710s/b-2 VA721...
  • Page 22 Software: If OS was Win2000 or WinXP , please install “PORT95NT.exe” In order to ensure can execute ISP program, please set BIOS in PC or Notebook as Fig 0.0 Fig 0.0 Confidential - Do Not Copy ViewSonic Corporation VE710s/b-2 VA721...
  • Page 23 2. Double-click the “ PORT95NT.exe” in Windows & install the program. , see Fig 0.1 Fig 0.1 3. Keep on press “ Next “ 4 times to go through the installation processes, see Fig. 0.2 Fig. 0.2 Confidential - Do Not Copy ViewSonic Corporation VE710s/b-2 VA721...
  • Page 24 4. Choose “ Typical “ then press “ Next “ , see Fig. 0.3 Fig. 0.3 5. Keep on press “ Next “ 4 times to go through the installation processes, see Fig. 0.4 Fig. 0.4 Confidential - Do Not Copy ViewSonic Corporation VE710s/b-2 VA721...
  • Page 25 1. User could download ISP driver and PORT95NT install from Myson Century website (www.myson.com.tw 2. After extracting the ZIP file , the total files list as Fig 1.0 , and double click the file of setup.exe to install. Fig 1.0 Confidential - Do Not Copy ViewSonic Corporation VE710s/b-2 VA721...
  • Page 26 4. Keep default setting or press “ Change “ button for selecting the path that you want , and then press “ Next “ button to continue , see Fig 1.2 Fig 1.2 Confidential - Do Not Copy ViewSonic Corporation VE710s/b-2 VA721...
  • Page 27 5. Press “ Install “ button to continue , see Fig 1.3 Fig. 1.3 6. Installation has finished , press “ Finish “ button , see Fig 1.4 Fig. 1.4 Confidential - Do Not Copy ViewSonic Corporation VE710s/b-2 VA721...
  • Page 28 3. The warning is used to remind user of that different CPU rate may cause ISP function fail. (it’s limited by IIC protocol ) , press “ OK “ button , see Fig 2.3 Fig. 2.3 Confidential - Do Not Copy ViewSonic Corporation VE710s/b-2 VA721...
  • Page 29 4. Press “ Create Security File “ button to key in Security code . Adjusting bar to decrease speed of IIC bus , See Fig. 2.4 . S p eed of IIC bus Securit y code Fig. 2.4 Confidential - Do Not Copy ViewSonic Corporation VE710s/b-2 VA721...
  • Page 30 7C , 4C , 77. The command No. and command must be set by user while coding. About the detailed of setting , please refer to section 6 boot code of ISP . Fig. 2.5 Confidential - Do Not Copy ViewSonic Corporation VE710s/b-2 VA721...
  • Page 31 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 fig3.1 Ste p 2 Ste p 1 Ste p 3 Ste p 4 Fig. 3.1 Confidential - Do Not Copy ViewSonic Corporation VE710s/b-2 VA721...
  • Page 32 3. CRC ( cyclic redundancy check ) : the host can check CRC register’s result instead of reading every byte in flash . The message of Check MCU CRC OK means that the host verify OK for the progress of program , see Fig.3.2 Fig. 3.2 Confidential - Do Not Copy ViewSonic Corporation VE710s/b-2 VA721...

  • Page 33: Trouble Shooting Flow Chart

    MAIN PCB CHECK 3.3V OK? POWER PCB CHECK CHECK I107 I101,I104 2.5V OK? SUROUND CAP SUROUND CAP BEAD OK? CHECK CHECK I106 I101 SUROUND CAP SUROUND CAP BEAD OK? BEAD OK? Confidential - Do Not Copy ViewSonic Corporation VE710s/b-2 VA721...
  • Page 34 Circuit Check X102 Crystal 14.318MHz is Change X102 working ? Check I101 Change I101 LCD Pin#73,74 data bus controller IC have signal Check panel Powers VLCD_3V3 VLCD_12V correct Change LCD panel Confidential - Do Not Copy ViewSonic Corporation VE710s/b-2 VA721...

  • Page 35: Recommended Spare Parts List

    7. Recommended Spare Parts List RECOMMENDED SPARE PARTS LIST (VE710b-2) ViewSonic Model Number: VS10047 Rev: 1b Item Description ECR/ECN ViewSonic P/N Ref. P/N Location Q'ty Accessories: POWER CORD USA WALL 1.83M BLACK A-PC-0106-0121 2427130046 P951 PC Board Assembly: PCB ASS'Y BLOCK (MAIN)
  • Page 36 RECOMMENDED SPARE PARTS LIST (VE710s-2) ViewSonic Model Number: VS10047 Rev: 1b Item Description ECR/ECN ViewSonic P/N Ref. P/N Location Q'ty Accessories: POWER CORD USA WALL 1.83M BLACK A-PC-0106-0121 2427130046 P951 PC Board Assembly: PCB ASS'Y BLOCK (MAIN) Removed 10/12/04 B-MB-0201-0846...
  • Page 37 RECOMMENDED SPARE PARTS LIST (VA721-1) ViewSonic Model Number: VS10047 Rev: 1b Item Description ECR/ECN ViewSonic P/N Ref. P/N Location Q'ty Accessories: POWER CORD USA WALL 1.83M BLACK A-PC-0106-0121 2427130046 P951 PC Board Assembly: PCB ASS'Y BLOCK (MAIN) B-MB-0201-0846 6201-7978908251 PCB ASS'Y BLOCK (MAIN)
  • Page 38 BOM LIST (VE710b-2) ViewSonic Model Number: VS10047 Rev: 1a Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty E-X-0415-0112 2369103901 XTAL,OSC 24.576MHZ/49US X102 E-X-0415-0119 2369103601 XTAL,OSC 12.000MHZ/49US X101 M-LCD-0826-0255 2212005202 LCD PANEL CLAA170EA03QV V901 M-MS-0808-9669 2202129103 PC BOARD VE170B P/B CEM1 160*150 V4.02...
  • Page 39 Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty Q106 E-Q-0402-1180 2360301296 XISTOR,NPN R SMD MMBT3904 SOT-23 DIODES Q109 Q106 E-Q-0402-1624 2360301696 XISTOR,NPN R SMD PMBS3904 SOT-23 PHILIPS Q109 E-Q-0402-0839 2361111191 XISTOR,PNP R 2SA1020(Y) TO-92 TOSHIBA Q105 #N/A 2360501296 FET,P-CH SMD...
  • Page 40 Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty E-FS-0410-0102 2213125211 FUSE FUSE 2.5A/250V SG501302.5 PICO F801 E-FS-0410-0009 2213125207 FUSE FUSE 2.5A/250V 21502.5 LITTEL F801 TRANSIENT VOLTAGE D915 #N/A 2362900795 SUPPRESSOR P6KE30A DO-15 WILLAS D916 TRANSIENT VOLTAGE D915 #N/A...
  • Page 41 M-LB-0813-0002 2056603050 SERIAL LABEL VIEWSONIC LCD SERIAL LABEL 6P55 6P54 6P51 M-LB-0813-0528 2055103400 LABEL JK0936F WEN 6P52 M-LB-0830-0718 2055132180 LABEL VE710B-2 VS10047 CPT 040728 6P50 P-FM-0602-0867 2012176500 POLYFOAM VE710 EPS (R) 6P21 P-FM-0602-0866 2012176400 POLYFOAM VE710 EPS (L) 6P20 M-LB-0813-0959...
  • Page 42 NAME PLATE VIEWSONIC E015-027 2C02 C-BC-0302-0588 2022262302 CABI BACK VE710B-2 ABS94HB PANTONE 432C 2C01 M-MS-0808-9213 2051352000 NAME PLATE VIEWSONIC LOGO 3 PIN VA521 1F05 M-MS-0808-9214 2051352100 NAME PLATE VIEWSONIC E015-006 3-BIRD LOGO 1F04 PL-FK-0709-0152 2044266301 FUNCTION KEY VE710 ABS94HB AL-PLATE...
  • Page 43 BOM LIST (VE710s-2) ViewSonic Model Number: VS10047 Rev: 1a Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty E-X-0415-0112 2369103901 XTAL,OSC 24.576MHZ/49US X102 E-X-0415-0119 2369103601 XTAL,OSC 12.000MHZ/49US X101 M-LCD-0826-0255 2212005202 LCD PANEL CLAA170EA03QV V901 M-MS-0808-9669 2202129103 PC BOARD VE170B P/B CEM1 160*150 V4.02...
  • Page 44 Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty Q101 Q102 E-Q-0402-1607 2360100796 XISTOR,PNP R SMD MMBT3906 SOT-23 DIODES Q103 Q107 Q108 Q101 Q102 #N/A 2360100696 XISTOR,PNP R SMD PMBS3906 SOT-23 PHILIPS Q103 Q107 Q108 M-MS-0808-0854 2097400301 EYELET BSS3-1/2H T=0.25 SN 3µｍ...
  • Page 45 Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty D909 D910 E-D-0403-2041 2364600396 DIODE,SWITCH SMD LL4148 DIODES MINIMELF D911 D912 D914 D902 D903 D904 D905 D906 E-D-0403-0531 2363600195 DIODE,SWITCH 1N4148 DO-35 D907 D908 D913 E-D-0403-2805 2363302400 DIODE,SCHOTTKY GMR30H60C TO-220FPAB GAMMA...
  • Page 46 M-LB-0813-0002 2056603050 SERIAL LABEL VIEWSONIC LCD SERIAL LABEL 6P55 6P54 6P51 M-LB-0813-0528 2055103400 LABEL JK0936F WEN 6P52 M-LB-0830-0717 2055132179 LABEL VE710S-2 VS10047 CPT 040728 6P50 P-FM-0602-0867 2012176500 POLYFOAM VE710 EPS (R) 6P21 P-FM-0602-0866 2012176400 POLYFOAM VE710 EPS (L) 6P20 M-LB-0813-0959...
  • Page 47 BOM LIST (VA721-1) ViewSonic Model Number: VS10047 Rev: 1b Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty M-LB-0813-0856 2055613379 LABEL ViewSonic CONTAINER LABEL 6P11 1/36 C116 C122 C133 C134 C135 C136 C137 C138 C139 C140 C141 C142 C143 C148 C149...
  • Page 48 2A07 DO-15 1000V/2A D801 D802 D803 D804 #N/A 2363233795 DIODE,RECT PS2010 2A/1000V DO-15 6P55 6P54 6P51 M-LB-0813-0002 2056603050 SERIAL LABEL VIEWSONIC LCD SERIAL LABEL 5B05 M-SCW-0824-0849 2080004700 SCREW,SPE M3*4 SPECIAL THIN HEAD TYPE I 5F10 M-SCW-0824-6719 2082630062 SCREW M3X6 P=0.5 M-SCW-0824-0285 2084730082...
  • Page 49 STAND VE710 ABS94HB BLACK 4001 5B01 PL-FK-0709-0152 2044266301 FUNCTION KEY VE710 ABS94HB AL-PLATE 1F03 M-MS-0808-9213 2051352000 NAME PLATE VIEWSONIC LOGO 3 PIN VA521 1F05 M-MS-0808-9214 2051352100 NAME PLATE VIEWSONIC E015-006 3-BIRD LOGO 1F04 M-MS-0808-9215 2051352200 NAME PLATE VIEWSONIC E015-017 2C02...
  • Page 50 Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty #N/A 2072261100 HEAT SINK JT178W/46W*20L*23H AL 9H03 #N/A 2072457800 INSULATOR VE710 24*31*0.45 T4000 5F07 #N/A 2072457900 INSULATOR VE710 12*135*0.45 T4000 5F08 #N/A 2072458300 INSULATOR 12*10*0.5 94V0 ADHESIVE 5F13 5F09 M-SCW-0824-6717...
  • Page 51 Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty E-IC-0401-4044 2365930896 IC,DIGITAL SMD RTD2023 PQFP128 Realtek I101 E-X-0415-0119 2369103601 XTAL,OSC 12.000MHZ/49US X101 E-X-0415-0112 2369103901 XTAL,OSC 24.576MHZ/49US X102 #N/A 2371111900 COIL,CHOKE 250uH +-7% L802 #N/A 2371121301 COIL,CHOKE ET-20 0.32mm*35Ts 21mH...
  • Page 52 8. Exploded Diagram And Spare Parts List FIG.1 15 X2 20 X4 NOTE.1 13-1 13-2 MAIN PCB ASS'Y 11 X3 POWER PCB ASS'Y 16 X4 NOTE.1 22 X2 FIG.1 KEYPAD PCB ASS'Y Confidential - Do Not Copy ViewSonic Corporation VE710s/b-2 VA721...
  • Page 53 LCD PANEL P104 P105 P106 P107 P901 P802 P101 P105 MAIN PCB MAIN PCB (M-star scaler) (Realtek scaler) POWER PCB P107 P104 P102 P101 P701 P902 KEYPAD PCB I/O CABLE Confidential - Do Not Copy ViewSonic Corporation VE710s/b-2 VA721...
  • Page 54 EXPLODED PARTS LIST (VE710s-2/VE710b-2/VA721) ViewSonic Model Number: VS10047 Rev: 1b Item ViewSonic P/N Ref. P/N Description Location Q'TY Remark C-FP-0301-0980 2603307568 FRONT BEZEL VE710 ABS94HB PS7604B 1F01 VE710s-2 C-FP-0301-0978 2603307569 FRONT BEZEL VE710B-2 ABS94HB PANTONE 432C 1F01 VE710b-2 C-FP-0301-0976 2603307576...

  • Page 55: Lcd Panel

    V-Sync GBO [0,4] OSP,ESP, 0INV I105 24LC16 EEPROM HW RESET P601 I601 TDA7496L DDC-SDA I104 ONBACKLI AUDIO AMP VOLUME CONTROL MTV312M64 DDC-SCL (OPTION) SPEAKER MUTE P603 AUDIO IN KEY- PAD LED Confidential - Do Not Copy ViewSonic Corporation VE710s/b-2 VA721...

  • Page 56: Schematic Diagrams

    C178 C177 C179 R190 ADC_ 3AVCC R191 C180 C181 47uF/16V 100nF 47uF/16V 100nF RTD 3PVCC 100nF 22uF/16V Q108 MMBT3906 PC5V D116 D117 R192 PC5V IN4148 IN4148 D116,D117 0 OHM 1206 (AU) Confidential - Do Not Copy ViewSonic Corporation VE710s/b-2 VA721...
  • Page 57 VCC3V3 CON13 R111 R112 C107 L103 0R 0603 0R 0603 47nF RED+ R113 C108 D101 D103 D104 10pF IN4148 IN4148 IN4148 R114 C109 47nF RED- D106 D107 D108 IN4148 IN4148 IN4148 Confidential - Do Not Copy ViewSonic Corporation VE710s/b-2 VA721...
  • Page 58 TCON7 R172 NC/22 XSTB R176 100/NC TCON5 R193 XSTB AR2N DDC_DAT TCON1 R194 FXDIO R177 100/NC R171 NC/22 FXDIO DDC_CLK VA721(A) RN6, R171, R172 NC C182 C183 VA521(A) RN5, R193, R194 Confidential - Do Not Copy ViewSonic Corporation VE710s/b-2 VA721...
  • Page 59 Q103 MMBT3906 S705 S704 S703 S702 D701 R157 C131 C130 C129 C128 C126 C125 C127 NC/100p NC/100p NC/100p NC/100p NC/100p NC/100p NC/100p LED_G GREEN C124 3 (C) 1 (B) 2 (E) Confidential - Do Not Copy ViewSonic Corporation VE710s/b-2 VA721...
  • Page 60 0.1uF C909 D911 D912 330PF 1N4148 1N4148 Q908 C904 R916 R926 5.1K D909 1N4148 AP9960J 6800PF C927 EEL-19 R933 6800PF D910 1N4148 R928 221 1% C919 0.047uF Q909 AP9960J D916 P6KE30A Confidential - Do Not Copy ViewSonic Corporation VE710s/b-2 VA721...
  • Page 61 R825 82.5K (3.3V) BEAD 10K 1% D810 F801 I802 12B1(5V) T2.5A/250V TLP621 C826 0.1UF R810 1.82K 1% C811 R813 C827 I803 C812 0.1uF 1uF/50V TL431D S801 R815 R809 AC IN 100~240V Confidential - Do Not Copy ViewSonic Corporation VE710s/b-2 VA721...
  • Page 65 11.5. POWER PCB TOP VIEW Confidential - Do Not Copy ViewSonic Corporation VE710s/b-2 VA721...
  • Page 66 11.6. POWER PCB BOTTOM VIEW Confidential - Do Not Copy ViewSonic Corporation VE710s/b-2 VA721...
  • Page 67 Add.: Fax: Tel: 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 suggestions to the Director, Quality Systems & Processes (marc.maupin@viewsonic.com) Confidential - Do Not Copy...

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