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2. Specification

2.1 Introduction

1 LCD

PANEL

(1

st

source)

Pane
Display Area
Optimum
Resolution
Pixel Pitch
Glass
Treatment
Contrast Ratio
Dynamic
Contrast
Viewing  Angle
LR,UD
Colors
Luminance
Response
Time
Backlight
Backlight Life
Mercury

(CR>=
10)

CMO M236H3-LA2
521.28mm(H)x293.22mm(V) 23.547” diagonal
color active matrix TFT LCD
1920x1080
0.2715 mm (H) x 0.2715mm (V)
Anti-Glare type, Hard-coating (3H)
1000 :1 (Typ.) 700:1(min)
10,000,000:1
170 Deg H and 160 Deg V (Typ.)
16.7 M (6-bits + Hi FRC)
300 cd/m2 (Typ.) / 250 cd/m2 (min)
Tr+Tf: 5ms (Typ.) / 8ms (Max.)
One light bar with White-LED
15000 Hrs (Min)
N/A (Typ.)

2 INPUT

SIGNAL

Video

Sync

RGB Analog (0.7 / 1.0 Vp-p , 75 ohms),
DVI-D (TMDS, 100ohms)

Separate Sync / Composite Sync / SOG
Fh = 24 – 83 kHz ; Fv = 50 – 75 Hz

3 COMPATIB

ILITY

PC
Mac

PC Compatibles (from VGA up to 1920x1080
Non Interlaced)
Power Mac (up to 1920x1080 )

4

RESOLUTI
ON

Recommende
d

Supported

1920x1080 @ 60Hz

640 x 350 @ 70Hz
640 x 400 @ 60, 70Hz
640 x 480 @ 50, 60, 67, 72, 75Hz
720 x 400 @ 70Hz
720 x 480 @ p60, i60Hz
720 x 576 @ p50, i50Hz

Confidential - Do Not Copy

V

X2450W/WM

-

LED-1

ViewSonic Corporation

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Содержание VS13518-1W

Страница 1: ...Model No VS13518 1W 2W 24 Wide LCD Monitor VX2450W_WM LED 1 SM Rev 1a Jul 2010 ViewSonic 381 Brea Canyon Road Walnut California 91789 USA 800 888 8583 Service Manual ViewSonic VX2450W WM LED 1 ...

Страница 2: ...pecifically 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 Trademarks Optiquest is a registered trademark of ViewSonic Corporation ViewSonic is a registered trad...

Страница 3: ...ption 22 4 Electronic Circuit Theory 39 5 Adjusting Procedure 43 6 Troubleshooting Flow Chart 71 7 Block Diagrams 77 8 Schematic Diagrams 78 9 PCB Layout Diagrams 84 11 Recommended Spare Parts List 92 10 Exploded Diagram And Spare Parts List 88 Confidential Do Not Copy VX2450W WM LED 1 ViewSonic Corporation 2 ...

Страница 4: ... power cable immediately and consult your closed dealer 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 Do not place heavy objects on the monitor or power cord 2 PRODUCT SAFETY NOTICE Many electrical and mechanical parts in this chassis have special safety visual inspections and ...

Страница 5: ...4 HANDLING AND PLACING METHODS Confidential Do Not Copy VX2450W WM LED 1 ViewSonic Corporation 4 ...

Страница 6: ...Confidential Do Not Copy VX2450W WM LED 1 ViewSonic Corporation 5 ...

Страница 7: ... 1 170 Deg H and 160 Deg V Typ 16 7 M 6 bits Hi FRC 300 cd m2 Typ 250 cd m2 min Tr Tf 5ms Typ 8ms Max One light bar with White LED 15000 Hrs Min N A Typ 2 INPUT SIGNAL Video Sync RGB Analog 0 7 1 0 Vp p 75 ohms DVI D TMDS 100ohms Separate Sync Composite Sync SOG Fh 24 83 kHz Fv 50 75 Hz 3 COMPATIB ILITY PC Mac PC Compatibles from VGA up to 1920x1080 Non Interlaced Power Mac up to 1920x1080 4 RESOL...

Страница 8: ...0 60Hz 1680 x 1050 60Hz 1920x1080 i50 p50 i60 p60Hz 5 CONNECT ORS Video Audio Power Analog Digital Audio In D sub DVI Supported HDMI ver 1 3 Display port 1 1 spec 3 5 mm jack green for VX2450wm LED Internal Power Adapter 3 pin plug CEE22 6 AUDIO Speaker 2 5Wx2 for VX2450wm LED only 7 POWER Voltage AC 100 240V Universal 50 60 Hz 8 ERGONO MICS Tilt Swivel Rotation Height Adjust 20 5 degrees N A N A ...

Страница 9: ...ntrast Response Time Aspect Ratio ECO Mode Setup Menu Language Resolution Notice OSD Position OSD Timeout OSD Background Auto Power Off Memory Recall 1 Main Menu 2 Input Select Up or Dn To immediately activate Contrast and Brightness OSD Menu Up Dn Recall Contrast and Brightness to default in its menu without OSD message 1 2 Toggle 720x400 and 640x400 mode 1 Up Dn Auto White Balance 1 Dn Power But...

Страница 10: ...9mm D 20 52 W x 13 36 H x 2 63 D 569 mm W x 495 mm H x126 mm D 22 4 W x19 5 H x4 9 D 14WEIGHT Net Net w o stand Gross 4 5 kg 4 05 kg 6 2 kg 15REGULATI ONS UL CUL FCC B ICES CB CE CES 003B ISO13406 2 TUV GS ERGO TUV S NOM GOST R HYGIENIC 20 copies CCC BSMI PSB C TICK MIC KCC SASO WEEE RoHS SASO Ukraine 16RELIABILI TY MTBF 100 000 Hr Excluding Panel 17POWER SAVING FUNCTION On Active Off Off Blue AMB...

Страница 11: ...Detachable Base KENSINGTON MicroSaver Security Compatible WorldWide Model Windows XP Vista Premium Windows 7 21Package Contents LCD Display Power Cable VGA Cable DVI Cable Audio Cable for VX2450wm LED only Quick Start Guide ViewSonic Wizard CD ROM Notes The Input Signal and Resolution spec above might be different from segment 4 5 The display shall fulfill all the criteria in segment 4 5 Confident...

Страница 12: ...ek NT68668UFG Input Signal D Sub DVI Sync Compatibility Separate Sync Composite Sync SOG Adapter Internal Power Board Power Cable Refer to APPENDIX B Yes 15 pin mini D SUB Analog Cable 1 8 m black with PC 2001 Detached cable refer the Appendix A Yes DVI D Cable 1 8m black with PC 2001 refer to Appendix A Yes Audio Cable 1 8m black with PC 2001 Yes for VX2450wm LED MIC Cable 1 8m black with PC 2001...

Страница 13: ...an Turkish Polish Romania Bulgaria Slovakia Croatia Serbia Slovenia Portuguese Arabic Japanese Traditional Chinese Korean Simplified Chinese Screen Protector Mylar Yes Service Insert Refer to Segment 5 9 3 For Region code M units only SRS Insert No Energy Star Sticker Yes POP Sticker Refer to Segment 5 8 3 No Warranty Card For Region code G units only Warranty Carton Sticker refer to F8 1 For Regi...

Страница 14: ...al Video Impedance 75 Ohms Analog 100 Ohms Digital Maximum PC Video Signal 950 mV with no damage to monitor Maximum Mac Video Signal 1250 mV with no damage to monitor Sync Signals TTL DDC 2B Compliant with version 1 3 The DDC communication shall not interrupt when power off DDC CI Compliant with Revision 1 1 The DDC communication shall not interrupt when power off Digital link protection HDCP Supp...

Страница 15: ... 80 A MAX 240VAC 50HZ COLD START AT 25 FULL LOAD Power Supply Cold Start Shall start and function properly when under full load with all combinations of input voltage input frequency and operating temperature Power Supply Transient Immunity Shall be able to withstand an ANSI IEEE C62 41 1980 6000V 200 ampere ring wave transient test with no damage Power Supply Line Surge Immunity Shall be able to ...

Страница 16: ... TBDW typ TBDW typ w o Audio On Blue TBDW max TBD W Max w o Audio TBD W Optimize TBD W Optimize w o Audio ECO Mode Blue TBD W Conserve TBD W Conserve w o Audio Active off Amber 0 1 W Off 0 1 W Recovery Time On Mode N A Active Off 3 sec 2 7 Electrical Requirement Item Condition Spec Remark Contact discharge 4KV Contact discharge 8KV Air discharge 8KV Electrostatic Discharge InnoLux SPEC Air dischar...

Страница 17: ...60Hz by 1 2 short cut key primary 640x480 60Hz 3 640 x 400 70 Hz 31 5 KHz v v v v DMT For Separated SOG and Composite sync switch 640x350 70 640x400 70 and720x400 70 by 1 2 short cut key primary 720x400 70 4 640 x 480 50 Hz 24 7 KHz v v v CVT 5 640 x 480 60 Hz 31 5 KHz v v v v DMT For Separate Composite and SOG sync switch 640x400 60Hz and 640x480 60Hz and 720x480 60Hz by 1 2 short cut key primary...

Страница 18: ...primary 640x480 60Hz 11 720 x 576 50 Hz 31 3 KHz v v v v DTV 12 800 x 600 56 Hz 35 2 KHz v v v v DMT 13 800 x 600 60 Hz 37 9 KHz v v v v DMT 14 800 x 600 72 Hz 48 1 KHz v v v v DMT 15 800 x 600 75 Hz 46 9 KHz v v v v DMT 16 832 x 624 75 Hz 49 7 KHz v v v v MAC 17 1024 x 768 50 Hz 39 6 KHz v v v v CVT For Separate Composite and SOG sync Switch 1024x768 50Hz and 1280x768 50Hz by 1 2 short cut key pr...

Страница 19: ...52 x 900 67 Hz 62 5 KHz v v v v For SUN 26 1280 x 720 50 Hz 37 5 KHz v v v v DTV 27 1280 x 720 60 Hz 45 KHz v v v v DTV 28 1280 x 768 50 Hz 39 6 KHz v v v v DMT For Separated and Composite sync Switch 1024x768 50Hz and 1280x768 50Hz by 1 2 short cut key primary 1024x768 50Hz 29 1280 x 768 60 Hz 47 8 KHz v v v v DMT For Separate Composite and SOG sync Switch 1280x768 60Hz and 1360x768 60Hz and 1366...

Страница 20: ...Hz 47 7 KHz v v v v DMT For Separate Composite and SOG sync Switch 1280x768 60Hz and 1360x768 60Hz and 1366x768 60Hz by 1 2 short cut key primary 1280x768 60Hz 40 1366 x 768 59 79 Hz 47 7 KHz v v v v DMT For Separate Composite and SOG sync Switch 1280x768 60Hz and 1360x768 60Hz and 1366x768 60Hz by 1 2 short cut key primary 1280x768 60Hz 41 1440 x 900 60 Hz 55 9 KHz v v v v DMT 42 1440 x 900 75 Hz...

Страница 21: ...49 480i 60 Hz 50 480p 60 Hz 51 576i 50 Hz 52 576p 50 Hz 53 720p 50 Hz 54 720p 60 Hz 55 1080i 50 Hz 56 1080i 60 Hz 57 1080p 50 Hz 58 1080p 60 Hz 1 Tolerance 2KHz if no overlapping issue 2 Any timing not in the list it should display as normal or show on OUT OF RANGE OSD message without blanking 3 The image quality of 50Hz mode might be worse than 60Hz Primary Presets 1920x1080 60Hz User Presets Num...

Страница 22: ...s 1 Memory recall under DOS mode 640 x 350 720 x 400 640 x 400 2 New timing mode detected under DOS mode 640 x 350 720 x 400 640 x 400 The monitor needs to do Auto Adjust the first time a new mode is detected see section 0 Touch Function Actions While running Change Mode Auto Adjust or Memory Recall the image shall blank Confidential Do Not Copy VX2450W WM LED 1 ViewSonic Corporation 21 ...

Страница 23: ...immediately activate Contrast and Brightness OSD Menu For VX2450w Recall Contrast and Brightness to default in its menu without OSD message Under Contrast or Brightness adjust sub menu recall Contrast or Brightness to its default without OSD message To immediately activate Audio Adjust menu To immediately activate Contrast Brightness OSD Menu For VX2450wm 1 In the Audio mode recall both of Volume ...

Страница 24: ... 60Hz and1366x768 60Hz mode when input 1280x768 60Hz 1360x768 60Hz or 1366x768 60Hz mode 5 Toggle 1400x1050 60Hz and 1680x1050 60Hz mode when input 1400x1050 60Hz or 1680x1050 60Hz mode 1 Keep pushing 5 sec White Balance 1 It will not shown on user s guide 2 OSD message as below Image no blanking 3 Recommend environment 3 1 Optical Best input timing 640 x 480 60Hz Following timing modes also recom...

Страница 25: ... disable and show following message for 3 seconds When switch to DDC CI When switch to DDC 2B Default DDC CI Signal 2 Factory Mode Remark All the short cuts function are only available while OSD off Confidential Do Not Copy VX2450W WM LED 1 ViewSonic Corporation 24 ...

Страница 26: ...0x768 75Hz 1280X768 75Hz Aspect ratio Full screen 3 4 AUDIO Interface SPEAKER SPECIFICATION For VX2450WM LED only Line input connection 3 5 mm stereo jack Line input signal 1 0 Vrms Line input impedance 10k Ohm Maximum power output 2 5 10 W ch Signal to Noise Ratio 50 dB Frequency response FO 20 Khz Distortion 10 THD 1kHz Vibration There should be no audible vibration with volume at 100 and treble...

Страница 27: ...ness 250cd m2 Min 300m2 Typical Contrast Ratio Min 700 1 Typical 1000 1 Viewing Angle Hor 170 Ver 160 Typical CR 10 Display Mode Normally White Frame rate 60Hz Response Time 5 ms Typical 8ms Max Surface Treatment Anti glare Haze 25 Hard Coating 3H Lamp one LED Outline Dimension 544 8 W X 320 5 H X 11 4 D typ Brightness uniformity 1 33 Max The average of measured value from monthly shipment shall b...

Страница 28: ...the monitor in the PE bag and seal the bag with tape Figure 2 1 3 Put the cushions on the monitor 1 4 Place the monitor into the carton and then put all the accessories into the carton At last close the carton and seal it with tape Figure3 Figure 3 AUDIO CABLE POWER DVI CABLE MONITOR HEAD Confidential Do Not Copy VX2450W WM LED 1 ViewSonic Corporation 27 ...

Страница 29: ...Disassembly Procedure Confidential Do Not Copy VX2450W WM LED 1 ViewSonic Corporation 28 ...

Страница 30: ...Confidential Do Not Copy VX2450W WM LED 1 ViewSonic Corporation 29 ...

Страница 31: ...Confidential Do Not Copy VX2450W WM LED 1 ViewSonic Corporation 30 ...

Страница 32: ...Confidential Do Not Copy VX2450W WM LED 1 ViewSonic Corporation 31 ...

Страница 33: ...Confidential Do Not Copy VX2450W WM LED 1 ViewSonic Corporation 32 ...

Страница 34: ...Confidential Do Not Copy VX2450W WM LED 1 ViewSonic Corporation 33 ...

Страница 35: ...Confidential Do Not Copy VX2450W WM LED 1 ViewSonic Corporation 34 ...

Страница 36: ...Confidential Do Not Copy VX2450W WM LED 1 ViewSonic Corporation 35 ...

Страница 37: ...Confidential Do Not Copy VX2450W WM LED 1 ViewSonic Corporation 36 ...

Страница 38: ...Confidential Do Not Copy VX2450W WM LED 1 ViewSonic Corporation 37 ...

Страница 39: ...Confidential Do Not Copy VX2450W WM LED 1 ViewSonic Corporation 38 ...

Страница 40: ... external feedback supply current is fed into the CONTROL pin by the end of the soft start the high voltage current source is turned off and the CONTROL pin will start discharging in response to the supply current drawn by the control circuitry Resistors R814 are for external current limit adjustment and used to reduce the current limit externally to a value close to the operating peak current of ...

Страница 41: ...8 is used for soft start and compensation C506 R508 are used for dump noise The output drives pins16 respectively output square pulses to drive MOSFET U501 U501 is N channel MOSFET U501 work as Boost topology it is high efficient PWM switching During start up OVP pin11 senses the voltage at the output voltage When OVP reaches 1V the output voltage is regulated The current flowing through LED is se...

Страница 42: ... this detector realizes via R121 and U105 29 The PC 5V of U103 is supplied by PC via CN102 9 with EP107 for ESD protection or supplied by Monitor self via D106 U103 is an EEPROM IC which is a kind of memory and used for saving EDID data 4 3 4 Button Control Button Key Power is defined as power on off which is connected to U105 122 through CN104 6 Button Key 2 is defined as two functions of selecti...

Страница 43: ...N OFF When press power key U105 122 recieves low pulse and then U105 will do the power on off If Power ON U105 123 LED Green will send out Low potential and then LED Blue on If Power OFF U105 123 LED Blue will send out High potential and then LED Off The Panel_Vcc Backlight_En CLK DATA output to panel will follow the following sequency Confidential Do Not Copy VX2450W WM LED 1 ViewSonic Corporatio...

Страница 44: ...Brightness OSD by push button 2 1 In the Audio mode recall both of Volume and Mute to default without OSD message 2 In the BT CR mode recall Contrast or Brightness to default in its menu without OSD message 1 2 1 Toggle 720x400 70Hz 640x350 70Hz and 640x400 70Hz mode when input 720x400 70Hz 640x350 70Hz or 640x400 70Hz mode 2 Toggle 640x400 60HZ 720x480 60Hz 640x480 60 mode when input 640x400 60HZ...

Страница 45: ...segment 4 6 5 No signal 2 power Burning mode 2 power Factory Mode Remark All the short cuts function are only available while OSD off 5 3 OSD Control 5 3 1 OSD Table Main Menu 1 Key button definition 1 OSD off 2 Execute the selected function Up Rolling up the slider When push the button on the top position the slider shall go down to the bottom item Dn Rolling down the slider When push the button ...

Страница 46: ... be off 4 Only for analog mode Contrast Brightness Contrast 1 Adjust range 0 to 100 2 Default 70 3 Key button definition 1 Back to Main Menu or OSD off depend on previous status Up Increase the OSD value setting Dn Decrease the OSD value setting Up Dn Recall to default Confidential Do Not Copy VX2450W WM LED 1 ViewSonic Corporation 45 ...

Страница 47: ...r Dn Move down the slider Brightness 1 Adjust range 0 to 100 2 Default 100 3 Key button definition 1 Back to Main Menu or OSD off depend on previous status Up Increase the OSD value setting Dn Decrease the OSD value Up Dn Recall to default Confidential Do Not Copy VX2450W WM LED 1 ViewSonic Corporation 46 ...

Страница 48: ...utton definition 1 Back to previous OSD status 2 Change to the selected input port Up Move up the slider Dn Move down the slider DVI Step 1 Turn off OSD Step 2 1 Target video input port Digital 2 If signal detected from target port change to target port 3 If no signal detected from target port keep existing input port Step 3 Show on Input Message OSD at the right top corner of screen for 1 second ...

Страница 49: ...olor setting Up Move up the slider Dn Move down the slider 4 Under DCR mode Dynamic Contrast On SRGB shall be disabled with fate out color And it should not be selected User Color Change Color setting to user color Red 1 Adjust range 0 to 100 2 Default 100 3 Key button definition 1 Back to Color Adjust OSD 2 selected setting Up Increase the OSD value setting Dn decrease the OSD value setting Confi...

Страница 50: ...to 100 2 Default 100 3 Key button definition 1 Back to Color Adjust OSD 2 selected setting Up Increase the OSD value setting Dn decrease the OSD value setting Confidential Do Not Copy VX2450W WM LED 1 ViewSonic Corporation 49 ...

Страница 51: ...ton definition 1 Back to Color Adjust OSD 2 selected setting Up Increase the OSD value setting Dn decrease the OSD value setting Information Key button definition 1 Back to Main Menu OSD Confidential Do Not Copy VX2450W WM LED 1 ViewSonic Corporation 50 ...

Страница 52: ... 2 Execute the selected function Up scroll up the slider When push the button on the top position the slider shall go down to the bottom item Dn Scroll down the slider When push the button on the H V Position Vertical Position 1 Adjust range 0 to 100 2 Key button definition 1 Back to Manual Image Adjust OSD 2 Change to Horizontal Position OSD Up Increase the OSD value setting Dn Decrease the OSD v...

Страница 53: ... shall be disabled with fate out color And it should not be selected 3 Under native mode Sharpness shall be disabled with fate out color And it should not be selected 4 Under SRGB mode Dynamic Contrast shall be disabled with fate out color And it should not be selected Fine Tune 1 Adjust range 0 to 100 2 Key button definition 1 Back to Manual Image Adjust OSD Up Increase the OSD value setting Dn D...

Страница 54: ...alue Dynamic Contrast Swap on and off the Dynamic Contrast function Default Off On Off When Dynamic Contrast is on below functions will be disabled 1 Brightness Contrast menu 2 SRGB selection in Color Adjust 3 White balance hot key 4 DDC CI BR CT adjustment Aspect Ratio 4 3 Change aspect ratio to 4 3 Confidential Do Not Copy VX2450W WM LED 1 ViewSonic Corporation 53 ...

Страница 55: ...n the slider shall go down to the bottom item Dn Scroll down the slider When push the button on the bottom position the slider shall go up to the top item 3 Default full screen Note 1 When input signals are wide format this function is disable 2 When input signals are non wide format this function is enable Full Screen Fill screen with panel native aspect ratio Confidential Do Not Copy VX2450W WM ...

Страница 56: ...n Scroll down the slider When push the button on the bottom position the slider shall go up to the top item 4 Default Standard 5 Under sRGB mode ECO Mode shall be disabled with fate out color And it should not be selected 6 No matter DCR on or off lamp current will be changed by ECO mode change 7 While ECO or DCR setting changed the lamp current shall be updated to new setting immediately 8 Do not...

Страница 57: ...et OSD language to English and keep in Language Select OSD French Set OSD language to French and keep in Language Select OSD Setup Menu Language Select German Set OSD language to German and keep in Language Select OSD Confidential Do Not Copy VX2450W WM LED 1 ViewSonic Corporation 56 ...

Страница 58: ...he selected function Up Scroll up the slider When push the button on the top position the slider shall go down to the bottom item Dn Scroll down the slider When push the button on the bottom position the slider shall go down to the top item 1 Show on existing by white background color 2 Key button definition 1 Back to previous OSD status 2 Change to the selected language setting Up Scroll up the s...

Страница 59: ...Adjust range 0 to 100 2 Default 50 3 Key button definition 1 Back to Setup Menu OSD 2 selected setting Up Increase the OSD value setting move OSD right Dn Decrease the OSD value setting move OSD left Up Dn Recall to default value Confidential Do Not Copy VX2450W WM LED 1 ViewSonic Corporation 58 ...

Страница 60: ...ecall to default value 5 Set OSD Time Out to 5 Seconds 15 Set OSD Time Out to 15 Seconds 30 Set OSD Time Out to 30 Seconds OSD Time Out 1 Adjust range 5 15 30 60 2 Default 15 3 Key button definition 1 Back to Setup Menu OSD Up Increase the OSD value setting Dn Decrease the OSD value setting Up Dn Recall to default value 60 Set OSD Time Out to 60 Seconds Confidential Do Not Copy VX2450W WM LED 1 Vi...

Страница 61: ...aving first After 3 minutes the display will turn off automatically 2 When no signal input with Auto Power Off OFF the display will go into power saving as normal display 3 Default Off 4 Memory Recall will call back the setting to default 5 When push Power Lock hot key under Auto Power Off On the message OSD will show on for 3 seconds Power Lock function is disabled 6 The function will be disabled...

Страница 62: ...hort cuts function for the buttons The OSD lock will be activated by pressing the front panel control buttons 1 for 10 seconds 1 If the user then tries to access the OSD by pressing any of the buttons a message will appear on the screen for 3 seconds showing OSD Locked 2 The OSD lock will be deactivated by pressing the front panel control buttons 1 again for 10 seconds 3 1 The OSD Lock message as ...

Страница 63: ...le to turn off the LCD while the power button is locked If the user presses the power button while it is locked a message will appear on the screen for 3 seconds showing Power Button Locked 2 It also means that with the power button locked the LCD would automatically turn back On when power is restored after a power failure If the power button is not in the locked mode then power should return to ...

Страница 64: ...cked 6 When OSD appears on screen the OSD Lock Unlock short cut key will be disabled 5 3 4 Resolution notice Action 1 Resolution Notice OSD should show on screen after changing to non native mode for 30 sec 2 Key button definition 1 Turn off the OSD message 2 Turn off the OSD message and disable Resolution Notice function 3 The OSD should disappear after 10 sec or by pushing button 1 or 2 Confiden...

Страница 65: ...mes out There shall not be a separate save 5 3 7 Out of range While non defined timing is detected following OSD message will keeps showing on 1 If the timing is over spec Fh Fv or dot clock the image shall be blanking and OSD background shall be non transparent 2 If the timing is inspect but not defined the image shall be non blanking 5 3 8 No signal While no signal is detected for D Sub and DVI ...

Страница 66: ...ll out AC power cable or press power key to restart 5 5 Upload firmware to MCU via VGA Cable Connect ISP board between monitor and PC as below configure Using novatek ISP Tool Update FW 1 System Frame 2 Function Description A ISP ON Confidential Do Not Copy VX2450W WM LED 1 ViewSonic Corporation 65 ...

Страница 67: ...ogram Write Buffer Data to MCU Flash Rom F Auto ISP ON Erase Promgram ISP OFF G View Hex View Hex File in Buffer H CheckSum Read Data from MCU 3 Initial Setting a After Setup EasyWriter We must set EasyWriter settings according our environment b In Option Select Setup ISP tool Confidential Do Not Copy VX2450W WM LED 1 ViewSonic Corporation 66 ...

Страница 68: ...SB USB IIC Speed Limit Suggestion Select Low Speed After Setting Select Comfirm Change to confirm your change D How to Program File to MCU Flash Rom Step 1 Load Hex File to Buffer Select Load File Button Confidential Do Not Copy VX2450W WM LED 1 ViewSonic Corporation 67 ...

Страница 69: ...k Switch 128k 256k Select H00 FW Project Name define in KeilC Select Confirm Load File OK Step 2 Set In System Programming Enable Select ISP ON Enable ISP Confidential Do Not Copy VX2450W WM LED 1 ViewSonic Corporation 68 ...

Страница 70: ...rase MCU Fash Rom Select Erase Erase Flash Avoid Conflict Step 4 Write Buffer Data to MCU Flash Rom Select Program Program Buffer Data to Flash Confidential Do Not Copy VX2450W WM LED 1 ViewSonic Corporation 69 ...

Страница 71: ...stem Programming Disable Disable ISP Start MCU Auto Mode Step2 Step5 Auto After Step 1 we can select Auto directly to run Program File to MCU Flash Rom Confidential Do Not Copy VX2450W WM LED 1 ViewSonic Corporation 70 ...

Страница 72: ...k circuit if short Check F801 P801 RT 801 D801 Check pin7 of IC802 voltage about 16V CheckC810 D803 C807 Check pin2 of IC802 voltage about 3V Check primary OVP OLP and secondary Check pin5 of IC802 voltage is below 1 4V Check R804 R805 END No power Confidential Do Not Copy VX2450W WM LED 1 ViewSonic Corporation 71 ...

Страница 73: ...807 C810 if short Change Check pin7 of IC802 voltage Check pin3 of IC802 voltage Change R833 R835 R805 R834 END Check the C pin voltage of IC803 Change Unstable power Check sampling Circuit Check R822 R825 R826 R822 R825 R826 Confidential Do Not Copy VX2450W WM LED 1 ViewSonic Corporation 72 ...

Страница 74: ... open No Yes Is there instantaneously pulse wave on pin1 pin16 of IC501 at the moment of restart No Is Ok IC501 Yes U501 U502 fail No IC501 fail Yes Is ok T501 T502 T501 T502 fail Are connected rightly CN501 CN502 CN503 No Connecting the output connector again No Check feedback circuit ISEN1 ISEN2 VSEN OLP1 OLP2 Yes END I Invert Yes Confidential Do Not Copy VX2450W WM LED 1 ViewSonic Corporation 7...

Страница 75: ...k FB103 Check Reset Waveform Check C151 Check Crystal pin 96 97 waveform Check Check CCFL Enable Check pin10 of Invert fail U104 fail Check R147 R111 R112 and Q106 NG OK OK OK OK NG OK OK NG NG NG Check Crystal Waveform Check FB102 NG Confidential Do Not Copy VX2450W WM LED 1 ViewSonic Corporation 74 ...

Страница 76: ...S cable NG Check VLCD Is 5V NG Check panel Enable of Panel Enable OK Check Q101 Q103 and END OK OK OK Check VLCD singals Workmanship LVDS cable NG OK Panel Fail Check CN104 White Screen Confidential Do Not Copy VX2450W WM LED 1 ViewSonic Corporation 75 ...

Страница 77: ... Cable Reinsert NG Change LVDS Cable NG Check Crystal pin 127 and pin128 OK checkU105and SDO SCZ SCKSDI RSTN OK NG Workmanship Check X1 C150 and C152 SDO SCZ SCK SDI Confidential Do Not Copy VX2450W WM LED 1 ViewSonic Corporation 76 ...

Страница 78: ...nel Back lamp 5V to 3 3V Rectifier Filter Circuit Rectifier filter 14V Output 5V Switch to inverter Sampling Voltage feedback DVI Input Circuit SCALER NT68668 B ON OFF ON OFF MOSFET Switch PWM Control Circuit DDC 24c02 VGA Input VGA Input Circuit DDC 24c02 Audio Input Speaker Audio Amplifier PAM8603 MCU Volume Control 5V Input 7 Block Diagram Confidential Do Not Copy VX2450W WM LED 1 ViewSonic Cor...

Страница 79: ... 250V Y1 F801 3 15A 250V R822 10K ZD801 27V F802 5A 125V D807 SB540 C818 680u 10V R825 270R 1 2 R815 100R 1 2 C823 10nF 50V R836 200R 1 1 2 C808 NC R839 0 22R 2W C814 1n 500V R818 22R 1 2 D804 SB540 R830 10K 1 1 2 IC801 LTV817M 3 1 4 2 D805 SB540 C828 0 1 100V C825 220u 35V R828 4 7K 1 2 C807 47u 25V L801 20mH 1 4 3 2 C824 0 1 50V R821 510R 2W P801 AC_SKT 1 2 3 CN802 8P 2 0mm 1 2 3 4 5 6 7 8 CN801...

Страница 80: ...0P 50V C161 1000P 50V D103 BAV70 3 2 1 C112 1u 16V C108 0 1 16V R101 0 R0805 C162 1000P 50V C109 100u 16V U102 AS1117L 1 8TR LF 3 1 2 4 VIN ADJ VOUT PAD C107 0 1 16V C110 0 1 16V R140 4K7 C163 1000P 50V R107 100K C103 22u 16V Q104 PMBT3904 1 3 2 C164 1000P 50V CN101 10P 2 0mm 1 2 3 4 5 6 7 8 9 10 C104 0 1 16V C166 1000p 50V R106 100K R108 47K R111 47K R109 100K D101 SSM24APT DIO SMA C160 1000P 50V...

Страница 81: ... C117 10p 50V EP108 5P35V R132 100 C121 0 047u 16V EP106 5P35V CN102 DZ11AA1 H5W6 4F 1 6 2 7 3 8 4 9 5 11 12 13 14 15 10 17 16 R115 75 U103 AT24C02BN 1 2 3 4 5 6 7 8 A0 A1 A2 GND SDA SCL WP VCC C116 10p 50V R119 75 1 R159 470 1 RB101 0 R0603 C118 10p 50V D106 BAV70 3 2 1 EP107 5P35V RB102 0 R0603 EP112 5P35V C115 0 047u 16V R128 100K R131 100 EP110 5P35V EP111 5P35V R114 75 C128 0 1 16V EP109 5P35...

Страница 82: ...4 RX4 SCL SDA VS RX1 RX1 GND RX3 RX3 5V GND HP RX0 RX0 GND RX5 RX5 GND RXC RXC C210 0 1 16V C214 0 1 16V D202 BAV99 1 3 2 C105 1000p 50V D205 BAV99 1 3 2 R212 100K R214 1K EP205 5P35V R213 10K D201 BAV70 3 2 1 C145 1000p 50V D203 BAV99 1 3 2 R211 100K R205 10 EP202 5P35V R210 100 EP204 5P35V R203 10 R202 10 C209 0 1 16V D209 BAV99 1 3 2 C206 0 1 16V R219 47K EP203 5P35V C203 0 1 16V EP201 5P35V R2...

Страница 83: ...6 AT24C16AN 1 2 3 4 5 6 7 8 A0 A1 A2 GND SDA SCL WP VCC R146 470 1 C143 0 1 16V R179 10K NC R181 100K C146 0 1 16V C157 22p 50V C140 0 1 16V C154 0 1 16V C156 0 1 16V R157 1K C173 1000P 50V NC R170 0改 1K 為 R0603 R162 10K R160 1M C158 22p 50V R166 10K C159 0 1 16V CN104 2x5P 2 0mm 1 2 3 4 5 6 7 8 9 10 C123 100p 50V R197 100 U105 NT68668 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24...

Страница 84: ...R503 470K R536 10 R520 10 R534 10 C501 1000p 50V R512 0 51 R532 10 R510 0 51 CN501 CONN LED 1 2 3 4 5 6 7 8 9 10 D502 SB200 L501 33uH R511 0 51 C513 10u 100V R506 100 1 R501 10K CN502 CONN LED 1 2 3 4 5 6 7 8 9 10 11 12 C505 2 2U 50V R516 10 R523 100 D501 SB200 R513 300K R509 0 R508 100 R537 0 R518 10 R527 0 C503 0 47 50V R517 10 C509 2 2U 50V R526 0 R540 10 C506 0 47 50V C510 220p 50V R528 0 R505...

Страница 85: ...9 PCB Layout Diagrams Confidential Do Not Copy VX2450W WM LED 1 ViewSonic Corporation 84 ...

Страница 86: ...Confidential Do Not Copy VX2450W WM LED 1 ViewSonic Corporation 85 ...

Страница 87: ...Confidential Do Not Copy VX2450W WM LED 1 ViewSonic Corporation 86 ...

Страница 88: ...Confidential Do Not Copy VX2450W WM LED 1 ViewSonic Corporation 87 ...

Страница 89: ...10 Exploded Diagram And Spare Parts List Confidential Do Not Copy VX2450W WM LED 1 ViewSonic Corporation 88 ...

Страница 90: ... Number VS13518 1W Rev 1a Item ViewSonic P N Ref P N Description Q ty 1 NA 50118P23B200R TRANSPARENT DECORATION VX2450 1 2 NA 75003P21A801R SUB ASSY POWER BUTTON LP21A8 1 3 NA 75003P21A800R SUB ASSY POWER BUTTON RING LP21A8 1 4 NA 501110601000R LOGO THREE BRIDS 7 9MM LE2082 1 5 NA 50102P23B200R BACK COVER W SPK W DVI VX2450 1 6 E 00010229 631102240500H LCP 23 6 M236H3 LA2 902 A CMO HF 1 7 B 000104...

Страница 91: ...53070800150R PWR CORD 10A 125V BLK 6FT UL CSA SVT 3Cx 1 7 P 00010439 50610LP23B00R CUSHION EPS M LP23B2 1 8 P 00010437 50610LP23B01R CUSHION EPS L LP23B2 1 9 PL 00008888 71402P23B200R ASSY BASE VX2450 1 10 NA 506120303000R BAG EPE PE W330xL300xT0 3mm CYCLE PRINTE 1 11 NA 506431008200R FILM PROTECTION UNPRINTED 555x327x0 1mm 1 12 P 00010436 50602P23B200R CARTON VX2450W LP23B2 1 13 NA 506440002300R ...

Страница 92: ... CSA SVT 3Cx 1 7 CB 00008002 453030300120R CABLE AUDIO 1P 6FT BLACK GREEN CP03B06P0 1 8 P 00010439 50610LP23B00R CUSHION EPS M LP23B2 1 9 P 00010437 50610LP23B01R CUSHION EPS L LP23B2 1 10 PL 00008888 71402P23B200R ASSY BASE VX2450 1 11 NA 506120303000R BAG EPE PE W330xL300xT0 3mm CYCLE PRINTE 1 12 NA 506431008200R FILM PROTECTION UNPRINTED 555x327x0 1mm 1 13 P 00010440 50602P23B201R CARTON VX2450...

Страница 93: ...n Qui ck Start Guide CD Rom Label Sticker Qucik Start Guide QSG KIT ASSY WW VX2450W LP23B2 DC 00010471 703010003100R 5 Main Source 22 Electronic Components LCD Panel Speaker and all Electronic Panel LCP 23 6 M236H3 LA2 902 A CMO HF CMO 902 E 00010229 631102240500H Main Source 23 Carton CARTON VX2450W LP23B2 P 00010436 50602P23B200R 12 Main Source 24 Cushion CUSHION EPS L LP23B2 P 00010437 50610LP2...

Страница 94: ...umentation Quick Start Guide CD Rom Label Sticker Qucik Start Guide QSG KIT ASSY WW VX2450WM LP23B2 DC 00010472 703010003200R 5 Main Source 23 Speaker Speaker 2 5W 4Ω 50 70mm R B G W CASE E 00010090 618100200790R Main Source 24 Panel LCP 23 6 M236H3 LA2 902 A CMO HF CMO 902 E 00010229 631102240500H Main Source 25 Carton CARTON VX2450WM LP23B2 P 00010440 50602P23B201R 13 Main Source 26 Cushion CUSH...

Страница 95: ...0R CARDBOARD L1200XW 1000XT7 LE22M1 2 5 PC 27 NA 506431000300R FILM PE 500mmx900M ROHS 0 36 ROL 28 NA 506380002100R TAPE WRAPPING TYPE VIEWSONIC 50mmx75M L 0 88 ROL 29 NA 506120100500R SEALED BAG ADHESIVE 330x230mm LE1918 2 5 PC 30 NA 50677P248400R INSERT CARTON 655 95 497 H mm LP2484 20 PC 31 NA 50677P248401R INSERT CARTON 655 50 497 H mm LP2484 20 PC 32 NA 71301P23B203R ASSY PACK AIR 20 40STD US...

Страница 96: ...xT0 3mm LP21A8 400 PC 74 NA 50202P23B200R BRACKET HINGE VX2450 100 PC 75 NA 509000000700R BOLT 4 40x11 8 Ni FOR D SUB DVI CONN RO 400 PC 76 NA 509146306200R SCREW P CROSS W WAS M3 6 Zn Cc 800 PC 77 NA 506381000700R TAPE ACE 45mmx30M PC 10x45mm 300 PC 78 B 00010487 79P231300501R PCBA IF B LA2 W O SPK LP23B2 522 ROHS 100 PC 79 B 00010256 795361400601R PCBA PI B W O SPK LP21A8 622 ROHS 100 PC 80 B 00...

Страница 97: ...LF15F9 2 5 PC 27 NA 506036006600R CARDBOARD L1200XW 1000XT7 LE22M1 2 5 PC 28 NA 506431000300R FILM PE 500mmx900M ROHS 0 36 ROL 29 NA 506380002100R TAPE WRAPPING TYPE VIEWSONIC 50mmx75M L 0 88 ROL 30 P 00010441 506120100500R SEALED BAG ADHESIVE 330x230mm LE1918 2 5 PC 31 NA 50677P248400R INSERT CARTON 655 95 497 H mm LP2484 20 PC 32 NA 50677P248401R INSERT CARTON 655 50 497 H mm LP2484 20 PC 33 NA ...

Страница 98: ...B200R BRACKET HINGE VX2450 100 PC 76 NA 509000000700R BOLT 4 40x11 8 Ni FOR D SUB DVI CONN RO 400 PC 77 NA 509146306200R SCREW P CROSS W WAS M3 6 Zn Cc 800 PC 78 NA 506381000700R TAPE ACE 45mmx30M PC 10x45mm 300 PC 79 B 00010489 79P231300500R PCBA IF B LA2 W SPK LP23B2 522 ROHS 100 PC 80 B 00010261 795361400600R PCBA PI B W SPK LP21A8 622 ROHS 100 PC 81 B 00010257 795361500600R PCBA KEYPAD B LP21A...

Страница 99: ...it Theory 5 Adjustment Procedure 6 Troubleshooting Flow Chart 7 Block Diagrams 8 Schematic Diagrams 9 PCB Layout Diagrams 10 Exploded Diagram and Exploded Parts List 11 Recommended Spare Parts List B Are you satisfied with this 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 other opinions or suggestions regardin...

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