ViewSonic VE175-2 User Manual Download

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Model No.

VLCDS23895-6W/7W

” Color TFT LCD Display

Service Manual

ViewSonic

VE175-2

ViewSonic

381 Brea Canyon Road, Walnut, California 91789 USA - (800) 888-8583

(

VE175

-2

VE175

b-2_SM_746

- Rev. 1

–

Aug.

2003

)

VE175b-2

QDI (A2KYYWW00001 ~ 50000 )

(A2UYYWW00001 ~ 50000)

CPT (A2KYYWW50001 ~ 99999 )

(A2UYYWW50001 ~ 99999)

Summary of Contents for VE175-2

Page 1: ...Display Service Manual ViewSonic VE175 2 ViewSonic 381 Brea Canyon Road Walnut California 91789 USA 800 888 8583 VE175 2 VE175b 2_SM_746 Rev 1b Aug 2003 VE175b 2 QDI A2KYYWW00001 50000 A2UYYWW00001 50000 CPT A2KYYWW50001 99999 A2UYYWW50001 99999 ...

Page 2: ...lly disclaims any warranty of merchantability or 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 Revision History Revision Date Description Of Changes Approval 1a 17 06 02 Initial Release DCN 2251 WANGJE Vie...

Page 3: ...OL DESCRIPTION 4 4 CIRCUIT DESCRIPTION 10 5 ADJUSTING PROCEDURE 15 6 TROUBLE SHOOTING FLOW CHART 17 7 EXPLODED DIAGRAM 21 8 EXPLODED PARTS LIST 23 9 BLOCK DIAGRAM 25 10 SCHEMATIC DIAGRAM 26 11 PCB LAYOUT 32 12 RECOMMENDED SPARE PARTS LIST 38 ViewSonic Corporation ii Confidential Do Not Copy VE175 b 2 ...

Page 4: ...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 electrical and mechanical parts in this chassis have special safety visual inspections and the p...

Page 5: ...ax Active Display Area 337 920mm H 270 336mm V Temperature Operating 0 C 40 C Storage 20 C 60 C Compliance UL 1950 cUL EN60950 FCC B CE MARK TÜV GS TCO99 CB Power Input Voltage 100 240 Vac Consumption 50 Watts Max 2 2 FACTORY SUPPORTING MODES Primary Preset VESA 1280 x 1024 60Hz Look up table timing 1 IND 640 x 350 70Hz 31 47kHz 2 IND 720 x 400 70Hz 31 467kHz 3 VESA 640 x 480 60Hz 31 469kHz 4 VESA...

Page 6: ...1024 75Hz 79 976kHz 19 MAC 1152 x 870 75Hz 68 6kHz 2 3 D SUB CONNECTOR D SUB 15 PIN CONNECTOR SIGNAL LEVEL CONNECTOR SIGNAL DESCRIPTION R RED 0 7vp p VIDEO G GREEN 0 7vp p 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 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1 R 6 GND 11 NC 2 G 7 GND 12 SDA 3 B 8 GND 13 H SYNC 4 NC 9 5V 14...

Page 7: ...ain Menu Power On Off Selects a highlighted control Also displays the control screen for the selected control and toggles between control pairs Power light Front Control Panel Main Menu with OSD controls 3 Front Panel Function Control Description ViewSonic Corporation 4 Confidential Do Not Copy VE175 b 2 ...

Page 8: ... 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 it outputs a video signal 1280 x 1024 60 Hz to the LCD display Look for instructions on changing the refresh rate in your graphic card s user guide If necessary make small adjustments using H POSITION and V POSITION until the screen image is completely visible T...

Page 9: ...d R green G and blue B The factory setting for this product is 6500K 6500 Kelvin User Individual adjustments for red green and blue 5400K Adds blue and green to the screen image for a darker color 6500K Adds red to the screen image for warmer white and richer red Default setting 9300K Adds blue to the screen image for cooler white used in most office settings with fluorescent lighting 1 To select ...

Page 10: ...the width of the screen image Vertical size is automatic with your LCD display Fine Tune sharpens focus by aligning the illuminated text and or graphic characters Try the Auto Adjust see page 9 before using the Fine Tune control Sharpness adjusts the clarity and focus of the screen image Setup Menu displays the menu shown below The Setup Menu controls are explained below Language Select allows you...

Page 11: ...n screen display screen is displayed For example with a 15 second setting if a control is not pushed within 15 seconds the display screen disappears Memory Recall returns adjustments to the original factory settings if the display is operating in a factory Preset Timing Mode listed in this user guide Control Explanation ViewSonic Corporation 8 Confidential Do Not Copy VE175 b 2 ...

Page 12: ...ct Or Enter Auto adjust When No OSD Power On Off Power key lock unlock OSD lock unlock 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 9 Confidential Do Not Copy VE175 b 2 ...

Page 13: ...interface 4 channel A D converter and a 64K byte internal program Flash ROM A CMOS output pin means it can sink and drive at least 4mA current It is not recommended to use such pin as input function An open drain pin means it can sink at least 4mA current but only drive 10 20uA to VDD It can be used as input or output function and needs an external pull up resistor A 8051 standard pin is a pseudo ...

Page 14: ...n before starting alignments This is especially critical in color temperature and white balance adjustments C Signals reference the front detail specifications and timing table Video reference the front detail specifications 1 Adjustment of White Balance A TIMING 1280x1024 64KHz 60Hz B PATTERN 5 Blocks C LCD MONITOR set to 1280x1024 80K 75Hz BURN IN and warm up over 30 minutes D CA110 color analiz...

Page 15: ... 0 332 0 03 y 0 348 0 03 7 Press key go back to Fig 2 Then press key return to Fig 1 Power key OFF ON quit factory mode G Color Temperature Luminance Verify BRIGHTNESS MAX CONTRAST MAX 9300K x 0 283 0 03 y 0 298 0 03 6500K x 0 310 0 03 y 0 330 0 03 Y 240 cd m2 5400K x 0 332 0 03 y 0 348 0 03 2 Geometry a Set cross hatch pattern and preset timing as timing table listed b Change to each mode in turn...

Page 16: ... you run ISP tool first time Choose 8 commands and enter the security code Security code 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 5 4 ISP MODE ViewSonic Corporation 13 Confidential Do Not Copy VE175 b 2 ...

Page 17: ... This makes you easy to enter ISP mode c D Sub cable has been connected to ISP board correctly 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 Print Port ISP Board D sub I O Cable IBM Compatible PC LCD Monitor ViewSonic Corporation 14 Confidential Do Not Copy VE175 b 2 ...

Page 18: ...13 N Y Start Check 12V on C170 Replace AC TO DC PCB N Y Check 5V on C173 Check 12V to 5V CKT N Y Check 3 3V 1 8V Check 3 3V 1 8V to GND N Y Check pin 8 of I108 5V_MCU Check Q107 Q108 R210 R212 N Replace Main Board N ViewSonic Corporation 15 Confidential Do Not Copy VE175 b 2 ...

Page 19: ... 5V N CHECK R190 C219 OK Y CHECK 12MHz PIN11 PIN12 OK N CHECK X102 C222 C223 OK Y CHECK PIN13 PIN14 CLOCK OK N CHECK I108 TO I101 OK Y CHECK I108 EVERY TWO PIN SHORT N CHECK KEYPAD P105 OK N Replace Main Board N Replace Keypad ViewSonic Corporation 16 Confidential Do Not Copy VE175 b 2 ...

Page 20: ...B in DATA Check R G B input N Check key pad Y N Check P983 N refer to no power Y Check pin 3 4 of P104 N Replace I101 Y Check I O cable N Check FPCLK FPDE PFVS PFHS Y Check X101 N Check R158 high Check Q104 N Y Check R156 Voltage Range Check Q101 N Y Invertor unit failed Replace Y Y ViewSonic Corporation 17 Confidential Do Not Copy VE175 b 2 ...

Page 21: ...oldering N Y RP1 RP12 poor soldering Lose color R or G or B Y Check P104 Pin 8 10 12 Check your PC or soldering N Y Check L120 L121 L122 R122 R125 R127 R128 R129 R130 Poor soldering N Y I101 fail or poor soldering ViewSonic Corporation 18 Confidential Do Not Copy VE175 b 2 ...

Page 22: ...2 16 X2 18 27 26 V901 5 17 X6 9 X4 2 1 19 3 4 X2 36 22 28 23 X2 15 X2 X4 8 21 10 11 FIG 1 FIG 2 FIG 2 FIG 1 MAIN PCB ASS Y 24 25 FIG 3 FIG 3 U901 50 52 I801 D804 53 POWER PCB ASS Y FIG 4 51 CON PCB ASS Y FIG 4 6 X2 32 32 33 X3 33 X3 34 7 Exploded Diagram ViewSonic Corporation 19 Confidential Do Not Copy VE175 b 2 ...

Page 23: ...88A 2202118700 VER 1 00 INVERTER PCB J2 J1 J3 P802 P803 P983 P802 LCD PANEL P981 P701 KEYPAD PCB 2202120100 V 0 02 P982 AC SOCKET ASS Y N BLU BRN L P953 P105 P101 P102 P104 P103 P961 I O CABLE ViewSonic Corporation 20 Confidential Do Not Copy VE175 b 2 ...

Page 24: ...CW 0824 0123 2084740102 SCREW BND T M4X10 BND T 2C03 2 VE175 2 36 2 M SCW 0824 0123 2084740102 SCREW BND T M4X10 BND T 2C03 2 VE175b 2 37 1 M MS 0808 1364 2026252601 CASE ABS 94 HB GY7521 2C04 1 VE175 2 37 2 M MS 0808 1074 2026252603 CASE ABS 94HB MIDNIGHT GRAY 2C04 1 VE175b 2 38 M SCW 0824 0123 2084740102 SCREW BND T M4X10 BND T 2C05 1 39 M MS 0808 1314 2106653500 HINGE TORQUE 20 60 KGF 5 90 2C20...

Page 25: ...108 5V REGULATOR I103 3 3V INVERTER U901 VGA INPUT P104 CONTROLLER IC I101 Micro CONTROLLER DDC I108 KEY PAD LED PANEL DISPLAY HIGHT VOLTAGE OSC X102 EERROM I109 LVDS INTERFACE I106 I107 12V REGULATOR I104 1 8V ViewSonic Corporation 22 Confidential Do Not Copy VE175 b 2 ...

Page 26: ... 81 82 93 94 51 50 YUV6 YUV5 YUV4 YUV3 YUV2 YUV1 YUV0 YUVCLK DVDD18 DGND DVDD18 DGND RX2M RX2P RX1M RX1P RX0M RX0P RXCP RXCM REXT RBIAS XTAL_IN XTAL_OUT CSYNC VSYNC HSYNC REFB REFMB REFPB INB REFCB REFG REFMG REFPG ING REFCG REFR REFMR REFPR INR REFCR TST_SCAN OBA7 OBA6 OBA5 OBA4 OBA3 OBA2 OBA1 OBA0 OGA7 OGA6 OGA5 OGA4 OGA3 OGA2 OGA1 OGA0 DVDD18 ORA7 ORA6 ORA5 ORA4 ORA3 ORA2 ORA1 ORA0 ODE OHS OCLK...

Page 27: ... 4 5 6 7 8 9 D102 5 6V 1 2 C168 0 1uF L108 50UH R119 2 2K Q103 MMBT3904 C170 470uF 25V I102 LM2596 1 2 3 4 5 VIN SW GND FB SHDN R118 220 I103 AIC1084 3 1 2 INPUT GND OUTPUT L119 BEAD60R 1206 1 2 R113 10K R207 0 62 2W PAD2 1 2 3 4 5 6 7 8 9 C167 0 1uF R208 0 47 2W D101 B340 R205 470 2W L132 NC 1206 1 2 C173 1000uF 10V R121 249 1 0603 C172 0 1uF R209 0 R L131 BEAD60R 1206 1 2 C180 0 1uF 0603 L104 33...

Page 28: ...1 12 13 R127 47 R125 47 R122 47 0603 C188 5pF NC 0603 R124 47 0603 C187 5pF NC 0603 L1210603 0R 1 2 C190 5P 0603 R133 33K NC 0603 D105 1N4148 1 2 R138 100 0603 C184 5P 0603 R126 33K NC 0603 R123 330 0603 R131 330 0603 R130 75 0603 R135 110 0603 R134 47 0603 C189 5pF NC 0603 I105B 74LVC14 SO 14 3 4 14 7 I105E 74LVC14 SO 14 11 10 14 7 D108 1N4148 1 2 C191 27P 0603 C192 47pF C193 47pF NC R197 100 060...

Page 29: ...5 0 1uF 0603 CP01 NC 1 2 3 4 5 6 7 8 C204 0 1uF 0603 R158 4 7K 0603 RP12 22R RP8SF 1 2 3 4 8 7 6 5 RP11 22R RP8SF 1 2 3 4 8 7 6 5 RP09 22R RP8SF 1 2 3 4 8 7 6 5 RP07 22R RP8SF 1 2 3 4 8 7 6 5 RP08 22R RP8SF 1 2 3 4 8 7 6 5 CP09 NC 1 2 3 4 5 6 7 8 RP10 22R RP8SF 1 2 3 4 8 7 6 5 CP10 NC 1 2 3 4 5 6 7 8 CP07 NC 1 2 3 4 5 6 7 8 C166 47uF 25V L126 BEAD120R 0805 CP04 NC 1 2 3 4 5 6 7 8 L113 BEAD120R 080...

Page 30: ... 4 5 6 7 8 R169 10K 0603 L117 BEAD600R Q105 MMBT3906 R183 3 3K 0603 C218 0 1uF 0603 L114 BEAD600R R211 1 5k C224 0 1uF 0603 I108 MTV312M44PLCC 1 2 3 4 5 6 7 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 34 35 36 37 38 39 40 41 42 43 44 33 8 9 DA2 P5 2 DA1 P5 1 DA0 P5 0 VDD3 NC NC RST VSS X2 X1 ISDA P3 4 T0 ISCL P3 5 T1 STOUT P4 2 P6 2 AD2 HLFHI P1 0 P1 1 P3 2 INT0 P1 2 P1 3 ...

Page 31: ...C824 0 22UF L804 5UH L801 JUMPER C823 4700PF C803 4700PF C817 NC C801 0 22UF P802 1 2 3 4 5 2 5A 250V L803 JUMPER C811 NC C810 0 033UF 50V MEF 7A 125V F803 R808 NC P803 NC 1 2 3 4 5 6 7 8 9 T801 ERL 28 1 6 5 3 9 12 7 8 10 11 D814 NC R807 16 2K 1 R840 10 R815 120 L805 ET 24 C812 100UF 400V C820 0 1UF 50V MEF D813 2A07 R805 150K 1W R813 100 C806 0 22UF 630V R811 19 1K 1 D812 2A07 D802 HER157G R812 4...

Page 32: ...11 PCB Layout Diagrams 11 1 MAIN PCB TOP VIEW ViewSonic Corporation 29 Confidential Do Not Copy VE175 b 2 11 2 MAIN PCB BOTTOM VIEW ...

Page 33: ...11 3 CON PCB TOP VIEW ViewSonic Corporation 30 Confidential Do Not Copy VE175 b 2 11 4 CON PCB BOTTOM VIEW ...

Page 34: ...11 5 POWER PCB TOP VIEW ViewSonic Corporation 31 Confidential Do Not Copy VE175 b 2 11 6 POWER PCB BOTTOM VIEW ...

Page 35: ...1 28 M LB 0813 0769 2055613293 VIEWSONIC OPEN STAND LABEL LCD LABEL 1 29 M MS 0808 4026 2051350200 JD144V3 VIEWSONIC 3BIRDS AL NAME PLATE 1 30 M MS 0808 1316 2013222536 250mmx350mmxt0 3 ADD PE LD POLYETHY BAG 1 31 M LB 0813 0885 2055632024 VE175 2 VLCDS23895 6W UPC LABEL UPC LABEL 1 32 M MS 0808 1317 2013053000 90CMX75CMX0 02t PE LD POLYETHY BAG 1 33 M LB 0813 0528 2055103400 DATE CORD LABEL JK093...

Page 36: ...175B 2 VLCDS23895 7W SMALL 6P03 1 30 M LB 0813 0002 2056603050 VIEWSONIC LCD SERIAL LABEL 6P56 6P55 6P54 6P51 4 31 B SB 0221 0002 2414502100 INVERTER JT178P93 EMAX U901 RA 1 32 B SB 0221 0597 2414502200 INVERTER DIVLJK0221D42 SAMPO U901 RB 1 QDI 2nd Source 33 B SB 0221 0290 2414500400 INVERTER PLCD07174 LINK COM U901 RA 1 CPT 34 B SB 0221 0434 2414501000 INVERTER DIVTL0058 D42 SAMPO U901 RB 1 CPT ...

Page 37: ...08 1619 2063451101 ADHESI SHEET 27 2x42 4 PVC COLOR GREY 1F20 1 29 N A 2063451203 ADHESI SHEET PC 94V0 56wX30LX1 0t BLACK 1F33 1 30 M MS 0808 1389 2071662800 SHIELD PLATE SPTE t 0 3mm VE175 1F22 1 31 M MS 0808 1420 2071663201 SHIELD PLATE SPTE t 0 3 Main board ST 1F10 1 32 M BK 0805 0004 2071859200 BRACKET FIX SECC t 1 0 1F29 1 33 M BK 0805 0003 2071859301 BRACKET FIX VE800 SECC 2 0t FOR STAND 5B0...

Page 38: ...603 1 10W 10Kohm J T R113 R139 R140 R141 8 88 E R 0405 6984 2253210496 RES CHIP 1 10W RC 0603 1 10W 100Kohm J T R168 R181 1 89 E R 0405 6601 2253210596 RES CHIP 1 10W RC 0603 1 10W 1Mohm J T R111 2 90 N A 2253211196 RES CHIP 1 10W RC 0603 1 10W 110 ohm J T R135 1 91 N A 2253212396 RES CHIP 1 10W RC 0603 1 10W 12Kohm J T R162 1 92 N A 2253215296 RES CHIP 1 10W RC 0603 1 10W 1 5Kohm J T R211 1 93 E ...

Page 39: ...DES SOT 23 Q101 RC Q103 3 144 N A 2360500196 FET P CH SMD SI9953DY TI TEMIC SO 08 Q102 RA 1 145 N A 2360500996 FET P CH SMD CEM9953A SO 8 CET Q102 RB 1 146 N A 2360510196 FET P CH SMD SI4953DY SO 8 VISHAY Q102 RC 1 147 E PC 0411 0082 2362401600 PHOTO COUPLR TLP721F D4 GR TOSHIBA I802 RB 1 148 E PC 0411 0083 2362401800 PHOTO COUPLR TLP621 D4 GR LF2 TOSHIBA I802 RA 1 149 E D 0403 0462 2363215495 DIO...

Page 40: ... N A 2404301112 CONNECTOR JST PH 13P SIDE P 2 0 OR EQUAL P104 1 204 N A 2404339301 CONNECTOR LEOCO 3951 01 V 2PIN P 3 96 P801 1 205 M MS 0808 9164 2407000100 SOCKET ASSY AC INLET ASS Y 1015 18 L 130 P953 1 206 M MS 0808 1313 2407200791 HOLDER FUSE FC 05C F802 RA 1 207 N A 2407200991 HOLDER FUSE CQ 05T 5mm DIA FUSE F802 RB 1 208 B SB 0221 0002 2414502100 INVERTER JT178P93 EMAX U901 RA 1 209 B SB 02...

Page 41: ...3 2024263004 FRONT BEZEL PC ABS 94V0 MIDNIGHT GRAY 1F01 1 6 M MS 0808 1074 2026252603 CASE ABS 94HB MIDNIGHT GRAY 2C04 1 7 M MS 0808 1315 2027255303 DUST COVER ABS 94HB MIDNIGHT GRAY 5B08 1 8 PL PS 0715 0187 2028254803 STAND ABS 94HB MIDNIGHT GRAY 5B01 1 9 PL BT 0706 0147 2044260904 FUNCTION KEY ABS 94V0 MIDNIGHT GRAY 1F03 1 10 M MS 0808 4026 2051350200 NAME PLATE JD144V3 VIEWSONIC 3BIRDS AL 1F19 ...

Page 42: ...ark 1 N A 2427130097 POWER CORD CHINA WALL 1 83M BLACK P951 1 2 N A 2056606021 SERIAL LABEL VS WARRANTY CARD SERIAL NO J 6P07 1 VE175b 2 INDIVIDUAL PARTS OF VSCN G China Different Parts from VE175 2 ViewSonic Corporation 39 Confidential Do Not Copy VE175 b 2 ...

Page 43: ... 2 VE175b 2 Service Manual e m a N e l t i T y n a p m o C d d A l e T x a F l i a m E m e t I t n e l l e c x E d o o G r i a F d a B t n e t n o C l a u n a M e c i v r e S 1 t u o y a L l a u n a M e c i v r e S 2 g n i t s i l d n a m r o f e h T 3 t i n U t n e l l e c x E d o o G r i a F d a B in the USA at facsimile 1 909 839 7943 You may also e mail any suggestions to the Director of Quali...

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