ViewSonic VE175-2 Service Manual
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ViewSonic VE175-2 Service Manual

ViewSonic VE175-2 Service Manual

17” color tft lcd display
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Service Manual

ViewSonic VE175-2
Model No. VLCDS23895-6W/7W
17" Color TFT LCD Display
ViewSonic 381 Brea Canyon Road, Walnut, California 91789 USA - (800) 888-8583
VE175b-2
QDI (A2KYYWW00001 ~ 50000 )
(A2UYYWW00001 ~ 50000)
CPT (A2KYYWW50001 ~ 99999 )
(A2UYYWW50001 ~ 99999)
(VE175-2/ VE175b-2_SM_746 - Rev. 1b – Aug. 2003)

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Summary of Contents for ViewSonic VE175-2

  • Page 1: Service Manual

    17” Color TFT LCD Display QDI (A2KYYWW00001 ~ 50000 ) (A2UYYWW00001 ~ 50000) CPT (A2KYYWW50001 ~ 99999 ) (A2UYYWW50001 ~ 99999) (VE175-2/ VE175b-2_SM_746 - Rev. 1b – Aug. 2003) 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

    CIRCUIT DESCRIPTION..................10 ADJUSTING PROCEDURE ................15 TROUBLE SHOOTING FLOW CHART ..............17 EXPLODED DIAGRAM..................21 EXPLODED PARTS LIST ...................23 9. BLOCK DIAGRAM .....................25 10. SCHEMATIC DIAGRAM..................26 11. PCB LAYOUT .....................32 12. RECOMMENDED SPARE PARTS LIST............38 ViewSonic Corporation VE175/b-2 Confidential – Do Not Copy...

  • 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. Usage of this product please refers to also user's manual. ViewSonic Corporation VE175/b-2 Confidential – Do Not Copy...

  • Page 5: Specifications

    6. MAC 640 x 480 @ 67Hz, 35kHz. 7. VESA 800 x 600 @ 56Hz, 35.156kHz, +/+ 8. VESA 800 x 600 @ 60Hz, 37.879kHz, +/+ 9. VESA 800 x 600 @ 72Hz, 48.077kHz, +/+ ViewSonic Corporation VE175/b-2 Confidential – Do Not Copy...
  • Page 6 12.SDA 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 ViewSonic Corporation VE175/b-2 Confidential – Do Not Copy...

  • Page 7: Front Panel Function Control Description

    Main Menu. Selects a highlighted control. Scrolls through menu Also, displays the control screen options and adjusts the for the selected control and displayed control. toggles between control pairs. ViewSonic Corporation VE175/b-2 Confidential – Do Not Copy...
  • 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 display.) ViewSonic Corporation VE175/b-2 Confidential – Do Not Copy...

  • Page 9: Main Menu Controls

    (vertical frequency). VESA 1280 x 1024 @ 60 Hz (recommended) means that the resolution is 1280 x 1024 and the refresh rate is 60 Hertz. ViewSonic Corporation VE175/b-2 Confidential – Do Not Copy...
  • Page 10 Sharpness displays the menu shown below: Setup Menu The Setup Menu controls are explained below: allows you to choose the language used in the Language Select menus and control screens. ViewSonic Corporation VE175/b-2 Confidential – Do Not Copy...
  • Page 11 15 seconds, the display screen disappears. returns adjustments to the original factory Memory Recall settings if the display is operating in a factory Preset Timing Mode listed in this user guide. ViewSonic Corporation VE175/b-2 Confidential – Do Not Copy...
  • Page 12 = Auto White Balance. (Remark: recommend to use 5-Disc full white pattern) = Recall Contrast and Brightness. (Don’t show OSD) + No Signal = Enter Burn in mode (Power On) = Enter Maintain mode. ViewSonic Corporation VE175/b-2 Confidential – Do Not Copy...

  • Page 13: Circuit Description

    A 6-pin connector is the only interface to control the inverter. Pin 5/6 is 12V input, pin 1/2 is the returns, pin 3 is the control of output current, and pin 4 is the enable/disable control. ViewSonic Corporation VE175/b-2 Confidential – Do Not Copy...

  • Page 14: Adjusting Procedure

    ” key go to factory mode. (Fig.1) (Fig.1) F. Adjust Color Temperature: (1) EEPROM INIT (5 BLOCKS): Press “ ¡ ¿ ” key move cursor to EEPROM INIT, Press “ “ key then monitor will INIT ADC value. ViewSonic Corporation VE175/b-2 Confidential – Do Not Copy...
  • Page 15 (b). Change to each mode in turn and wait for the monitor finish auto-alignment and save process before change to next mode. (c). After all of modes are adjusted, exit OSD menu and press PWR OFF to exit factory mode. ViewSonic Corporation VE175/b-2 Confidential – Do Not Copy...
  • Page 16 7C , 7C , 5A , 39 , 31 , 30 , 31 , 30, 33 3. Choose ‘MCU type” We use MTV312M64 4. Load MCU file Choose the Hex file that you’re going to load. ViewSonic Corporation VE175/b-2 Confidential – Do Not Copy...
  • Page 17 6. DO NOT disconnect D-sub cable or power off while you’re loading the code. 7. You can adjust ISP speed to meet your PC. 8. Hardware Connect IBM Compatible PC LCD Monitor Print Port ISP Board D-sub I/O Cable ViewSonic Corporation VE175/b-2 Confidential – Do Not Copy...

  • Page 18: Trouble Shooting Flow Chart

    AC TO DC PCB F801,D810~D813 Check 5V Check on C173/+ 12V to 5V CKT Check Check Replace 3.3V/1.8V 3.3V/1.8V to GND Main Board Check Check pin 8 of I108 Q107,Q108 +5V_MCU R210~R212 ViewSonic Corporation VE175/b-2 Confidential – Do Not Copy...
  • Page 19 MCU 5V CHECK CHECK I108 PIN7,PIN9 R190,C219 Replace Main Board CHECK CHECK 12MHz PIN11,PIN12 X102,C222,C223 CHECK CHECK PIN13,PIN14 I108 TO I101 CLOCK OK? CHECK CHECK Replace I108,EVERY TWO KEYPAD P105 Keypad PIN SHORT? ViewSonic Corporation VE175/b-2 Confidential – Do Not Copy...
  • Page 20 Check R.G.B. in Check R.G.B. Replace DATA input I101 Check I/O cable Check Check FPCLK,FPDE, X101 PFVS,PFHS Check R158 high Check Q104 Check R156 Check Q101 Voltage Range Invertor unit failed Replace ViewSonic Corporation VE175/b-2 Confidential – Do Not Copy...
  • Page 21 R or G or B I101,I106,I107 Check Check Check your poor P104 RP1~RP12 PC or soldering soldering Pin 8,10,12 RP1~RP12 Check poor L120,L121,L122 Poor soldering R122,R125,R127 soldering R128,R129,R130 I101 fail or poor soldering ViewSonic Corporation VE175/b-2 Confidential – Do Not Copy...

  • Page 22: Exploded Diagram

    31 X2 FIG.1 FIG.4 33 X3 FIG.2 15 X2 16 X2 U901 CON. PCB ASS'Y 7 X2 FIG.4 FIG.3 POWER PCB ASS'Y 23 X2 FIG.2 I/O CABLE D804 I801 P953 43 X4 ViewSonic Corporation VE175/b-2 Confidential – Do Not Copy...
  • Page 23 INVERTER PCB P981 P802 P102 P101 P105 P802 MAIN PCB POWER PCB P103 P104 TO:METAL FITTG GND P982 P801 2202120100 V:0.02 P701 KEYPAD PCB P953 (BLU) (BRN) AC SOCKET ASS'Y P961 I/O CABLE ViewSonic Corporation VE175/b-2 Confidential – Do Not Copy...

  • Page 24: Exploded Parts List

    8. Exploded Parts List Exploded Parts List (VE175-2/VE175b-2 QDI & CPT Panel) Description Item ViewSonic P/N Ref. P/N Location Q'TY Remark C-FP-0301-0934 2024263002 FRONT BEZEL PC+ABS 94 V0 GY7521 1F01 VE175-2 2024263004 FRONT BEZEL PC+ABS 94V0 MIDNIGHT GRAY VE175b-2 C-FP-0301-0153 1F01 2053751901 LED INDIC.-PWR VE150-2/PMMA 94HB...

  • Page 25: Block Diagram

    9. Block Diagram ViewSonic Corporation VE175/b-2 Confidential – Do Not Copy...

  • Page 26: Schematic Diagram

    CLKOUT 0603 DGND AGND X101 LVDD_1.8 C162 27MHz Crystal C163 C164 10pF 15pF 0.1uF DGND AGND 0603 0603 0603 R112 AGND and DGND are isolated, not completely separated 0603 Place near PAD1 ViewSonic Corporation VE175/b-2 Confidential – Do Not Copy...
  • Page 27 Copper plate DVDD_3.3 Min : 10 x 10 L131 R207 VOUT SOT252 0.62/2W BEAD60R R120 1206 0603 1Amax C178 C179 C180 PAD2 PAD3 0.1uF 0.1uF 0603 47uF/16V 0603 M5-16V R121 0603 249 1% ViewSonic Corporation VE175/b-2 Confidential – Do Not Copy...
  • Page 28 TP11 SO-14 I105B R138 D113 1N4148 RC-AHSYNC MCU_CS D110 D111 D112 0603 1N4148 1N4148 1N4148 74LVC14 SO-14 D117 1N4148 D114 D115 D116 1N4148 1N4148 1N4148 Place near CN R139 R140 0603 0603 ViewSonic Corporation VE175/b-2 Confidential – Do Not Copy...
  • Page 29 BLON pin : Reset HIGH 0603 R174 Place Q104 if inverter is Low active 100/NC Place R180 if inverter is High active 0603 R159 Q104 BLON 4.7K MMBT3904 SOT-23 0603 R160 0603 ViewSonic Corporation VE175/b-2 Confidential – Do Not Copy...
  • Page 30 0603 0603 LED_ORG 8 HEADER L114 BEAD600R POWER KEY PAD LED_ORG LED_GRN L115 BEAD600R MENU PWR/SW PSM/LED L116 BEAD600R PWR/LED L117 BEAD600R DOWN L118 BEAD600R ENTER GREEN ORANGE OSD Control Panel Interface ViewSonic Corporation VE175/b-2 Confidential – Do Not Copy...
  • Page 31 KA1M0565R C815 F801 100PF NPO R811 R802 2.5A/250V 19.1K 1% R813 100 C810 R807 0.033UF/50V MEF 16.2K 1% I802 TLP721F C820 0.1UF/50V MEF I803 P801 TL431D AC IN 100-240V R812 4.87K 1% ViewSonic Corporation VE175/b-2 Confidential – Do Not Copy...

  • Page 32: Pcb Layout

    11. PCB Layout Diagrams 11.1. MAIN PCB TOP VIEW 11.2. MAIN PCB BOTTOM VIEW ViewSonic Corporation VE175/b-2 Confidential – Do Not Copy...
  • Page 33 11.3. CON PCB TOP VIEW 11.4. CON PCB BOTTOM VIEW ViewSonic Corporation VE175/b-2 Confidential – Do Not Copy...
  • Page 34 11.5. POWER PCB TOP VIEW 11.6. POWER PCB BOTTOM VIEW ViewSonic Corporation VE175/b-2 Confidential – Do Not Copy...

  • Page 35: Recommended Spare Parts List

    D15/C13 2919(3+6) 1.83M BLK I/O CABLE 11 M-MS-0808-9162 2002310329 VIEWSONIC VE175-2 QSG 0616 2P02 12 M-MS-0808-9163 GUARANT CARD VIEWSONIC VE175-2 QSG CPT 0818 2P02 2002310370 13 C-FP-0301-0857 2603307326 PC+ABS 94-V0 877C VA720-1 PANEL ASSY 14 B-MB-0201-0792 6201-7978906251 PCB ASS'Y BLOCK (MAIN)
  • Page 36 M-LB-0813-0922 2055632030 UPC LABEL VE175B-2(3) VLCDS23895-7W CPT 6P02 2002310330 GUARANT CARD VIEWSONIC VE175B-2 QSG M-MS-0808-9159 2P02 M-MS-0808-9160 2002310371 GUARANT CARD VIEWSONIC VE175B-2 QSG CPT 2P02 Recommended Spare Parts List VSCN-G Item ViewSonic P/N Ref. P/N Description Q'ty Location A-PC-0106-0277 2427130097 POWER CORD (CHINA WALL 1.83M BLACK SCP P951...
  • Page 37 VE175-2 (QDI & CPT) BOM LIST Location Item ViewSonic P/N Ref. P/N Description Q'ty Remark 1 M-MS-0808-9162 2002310329 GUARANT CARD VIEWSONIC VE175-2 QSG 0616 2P02 2 M-MS-0808-9163 2002310370 GUARANT CARD VIEWSONIC VE175-2 QSG CPT 0818 2P02 3 P-BX-0601-0938 2011170007 CARTON BOX...
  • Page 38 EC 1000u/ 16V 10*20 P=5.0 T C816 115 E-C-0404-3097 2333333791 CAP,ELE 105'C EC 330u/ 16V 8*11 P=5.0 T C176 #N/A 2333347613 CAP,ELE 105'C EC 47u/ 16V 5*11 P=2.5 T C179 C101 C121 C122 ViewSonic Corporation VE175/b-2 Confidential – Do Not Copy...
  • Page 39 172 E-IC-0401-2745 2365810796 IC,LINEAR(SMD) AP1084K33A(3.3V) TO-263 ATC I103 173 E-IC-0401-2746 2365810896 IC,LINEAR(SMD) AP1117DA(ADJ) TO-252 I104 174 E-IC-0401-2744 2365810996 IC,LINEAR(SMD) AP15015K5(5V) TO263 ANACHIP I102 175 E-IC-0401-2124 2365917996 IC,DIGITAL SMD SN75LVDS83DGG I106 RB I107 ViewSonic Corporation VE175/b-2 Confidential – Do Not Copy...
  • Page 40 221 M-WR-0828-0478 2428106100 JUMPER J801 0.6£p10.00MM 222 E-R-0405-7004 2436101012 VARISTOR R802 SIOV-S14K320 14£p510V #N/A 2438501107 CD-OWNER GUIDE VE175-2 WIZARD DATE:20030616 2P01 #N/A 2438501133 CD-OWNER GUIDE VE175-2 WIZARD DATE:20030818 2P01 225 M-MS-0808-8007 2504250800 ADHESI TAPE 3M #1350 W=10mm Yellow K901 226 M-MS-0808-8007 2504250800 ADHESI TAPE W10mm*L60M*T0.083mm Yellow...
  • Page 41 4 M-LB-0813-0002 2056603050 SERIAL LABEL VS WARRANTY CARD SERIAL NO-J 6P07 #N/A 2013051800 POLYETHY BAG JT166A14 500LX470WX490H t=0.08 6P70 VE175b-2 (QDI & CPT) BOM LIST (Different Parts from VE175-2) Location Item ViewSonic P/N Ref. P/N Description Q'ty Remark 1 M-MS-0808-9159...
  • Page 42 VE175b-2 INDIVIDUAL PARTS OF VSCN-G (China) (Different Parts from VE175-2) Item ViewSonic P/N Ref. P/N Description Location Q'ty Remark #N/A 2427130097 POWER CORD CHINA WALL 1.83M BLACK P951 #N/A 2056606021 SERIAL LABEL VS WARRANTY CARD SERIAL NO-J 6P07 ViewSonic Corporation VE175/b-2 Confidential –...
  • Page 43 *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 after reading VE175-2/ VE175b-2 Service Manual?

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