ViewSonic VX2433wm-1, Service Manual

Page 1: ...nic VX2433wm 1 VX2433wm CN Model No VS12324 23 6 Wide Color TFT LCD Display VX2433wm 1_VX2433wm CN _SM Rev 1b Feb 2009 ViewSonic 381 Brea Canyon Road Walnut California 91789 USA 800 888 8583 Service M...

Page 2: ...antability 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 View...

Page 3: ...ion 13 4 Circuit Description 17 5 Adjusting Procedure 27 6 Trouble Shooting Flow Chart 33 7 Block Diagrams 40 8 Schematic Diagrams 50 9 PCB Layout Diagrams 56 10 Exploded Diagram And Spare Parts List...

Page 4: ...er cable immediately and consult your closed dealer z 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...

Page 5: ...Handling and Placing Methods ViewSonic Corporation VX2433wm 1 VX2433wm CN CONFIDENTIAL DO NOT COPY 2...

Page 6: ...ViewSonic Corporation VX2433wm 1 VX2433wm CN CONFIDENTIAL DO NOT COPY 3...

Page 7: ...mg per lamp max 2 INPUT SIGNAL Video Sync RGB Analog 0 7 1 0 Vp p 75 ohms DVI D HDMI TMDS 100ohms Separate Sync Composite Sync SOG Fh 24 83 kHz Fv 50 76 Hz 3 COMPATIBILITY PC Mac PC Compatibles from V...

Page 8: ...lect Resolution Notice OSD Position OSD Time Out OSD Background Sleep Memory Recall 1 Main Menu 2 Input Select Dn To immediately activate Audio menu up To immediately activate Contrast menu It should...

Page 9: ...x 418 mm H x 231mm D 22 52 W x 16 46 H x 9 09 D 572 mm W x 359 mm H x 62 3mm D 22 52 W x 14 13 H x 2 45 D 632 mm W x 482 mm H x 152mm D 24 88 W x 18 98 H x 5 98 D 14 WEIGHT Net Gross 5 04kg 11 11lb 7...

Page 10: ...mium SRS WOW HD HDMI 21 Package Contents LCD Display Power Cable Audio Cable VGA Cable DVI Cable Quick Start Guide One page ViewSonic Wizard CD ROM 22 EU Packaging Information Carton One piece constru...

Page 11: ...ViewSonic CD Wizard English French German Dutch Finnish Swedish Italian Spanish Greek Russian Czech Hungarian Turkish Polish Romania Bulgaria Slovakia Croatia Serbia Slovenian Portuguese Arabic Japan...

Page 12: ...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 Revision 1 3 Th...

Page 13: ...ANSI IEEE C62 41 1980 6000V 200 ampere ring wave transient test with no damage Power Supply Line Surge Immunity Shall be able to withstand 1KV L L and 2KV L PE Refer to EN55024 1998 CISPR24 1997 IEC1...

Page 14: ...Hz v v v v DMT 6 640 x 480 67 Hz 35 KHz v v v v For MAC 7 640 x 480 72 Hz 37 9 KHz v v v v DMT 8 640 x 480 75 Hz 37 5 KHz v v v v DMT 9 720 x 400 70 Hz 31 5 KHz v v v v DMT 10 720 x 480 60 Hz 31 5 KHz...

Page 15: ...75 Hz 80 KHz v v v v DMT 37 1360 x 768 60 Hz 47 7 kHz v v v v DMT 38 1440 x 900 60 Hz 55 9 KHz v v v v DMT 39 1440 x 900 75 Hz 70 6 KHz v v v v DMT 40 1400 x 1050 60 Hz 65 3 KHz v v v v DMT 41 1400 x...

Page 16: ...setting when execute Auto Image Adjust function by following conditions 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...

Page 17: ...cycling Reaction Time OSD must fully appear within 0 5s after pushing Button 1 3 2 SHORT CUTS FUNCTION FROM THE BUTTON S 1 Main Menu 2 Input toggle Analog or DVI or HDMI refer to Appendix D To immedia...

Page 18: ...720x400 or 640x400 mode Default 720 x 400 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 inpu...

Page 19: ...analog mode 4 Only for analog mode Contrast Brightness Contrast 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...

Page 20: ...00 3 Key button definition 1 Back to Main Menu or OSD off depend on previous status 2 Change to Contrast OSD Up Increase the OSD value setting Dn Decrease the OSD value Up Dn Recall to default Input S...

Page 21: ...or 1 second HDMI PC Step 1 Turn off OSD Step 2 1 Target video input port HDMI PC 2 If signal detected from target port change to target port 3 If no signal detected from target port keep existing inpu...

Page 22: ...setting Up Increase the volume settingMove up the slider or Toggle audio to Mute or Audible icon Dn Decrease the volume settingMove down the slider or Toggle audio to Mute or Audible icon 3 No signal...

Page 23: ...OSD value setting Dn decrease the OSD value setting 1 Show on existing input port by red color 2 Default 6500K 3 Key button definition 1 Back to previous OSD status 2 Change to the selected color sett...

Page 24: ...ge to Vertical Position OSD Up Increase the OSD value setting Dn Decrease the OSD value Manual Image Adjust 1 Key button definition 1 Back to previous OSD status 2 Execute the selected function Up scr...

Page 25: ...e bottom position the slider shall go down to the top item 2 Under Digital mode all the H V Position Horizontal Size and Fine Tune shall be disabled with gray color And it should not be selected 3 Und...

Page 26: ...red color 2 Key button definition 1 Back to previous OSD status 2 Change to the selected Response Time setting Up Scroll up the slider When push the button on the top position the slider shall go down...

Page 27: ...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 for...

Page 28: ...ing and DTV timing setting separately 5 Default RGB Mode DVI VGA 6 HDMI is auto detected by Info Frame YPbPr HD mode Non YPbPr PC mode 7 It will recall to default after AC DC on off or mode change Sta...

Page 29: ...Standard 5 Under sRGB mode ECO Mode shall be disabled with gray 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 settin...

Page 30: ...efinition 1 Back to Main Menu OSD 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 slid...

Page 31: ...crease the OSD value setting move OSD left Up Dn Recall to default value OSD Position Jump to OSD H Position OSD directly OSD V Position 1 Adjust range 0 to 100 2 Default 50 3 Key button definition 1...

Page 32: ...mode 30 Minutes 45 Minutes Set time before going to Sleep mode 45 Minutes 60 Minutes Set time before going to Sleep mode 60 Minutes 120 Minutes Set time before going to Sleep mode 120 Minutes Sleep 1...

Page 33: ...kground blanking 2 Recall white balance to factory setting 3 Recall all the OSD setting to the default include the R G B in User Color 4 Show the message OSD position is at the center for 3 seconds 5...

Page 34: ...ons 1 again for 10 seconds 3 1 The OSD Lock message as below Range 0 to 10 2 The OSD Locked message as below 3 The OSD Unlock message as below Range 0 to 10 4 When the OSD is locked will lock all func...

Page 35: ...hould return to it s previous state when power is restored after a power failure The Power lock will be deactivated by pressing the front panel control buttons 1 again for 10 seconds 3 1 The Locking P...

Page 36: ...anel resolution 3 7 TOUCH FUNCTION ACTIONS 1 Execute Auto Image Adjust when new mode detected and save the settings to buffer for further use 2 It should be reset by Memory Recall function Should not...

Page 37: ...Image Blanking 3 11 ACTORY DEFAULTS Item Defaults Item Defaults Contrast 70 OSD Time Out 15 Sec Brightness 100 OSD Background On Color Temperature 6500K Volume 80 Sharpness 100 Treble N A OSD H Posit...

Page 38: ...n the PE bag and seal the bag with tape Figure 2 Figure 1 Figure 2 Put the cushions on the monitor Place the monitor into the carton and then put all the accessories into the carton At last close the...

Page 39: ...Disassembly Procedure BASE STAND ViewSonic Corporation VX2433wm 1 VX2433wm CN CONFIDENTIAL DO NOT COPY 36...

Page 40: ...BACKCOVER ViewSonic Corporation VX2433wm 1 VX2433wm CN CONFIDENTIAL DO NOT COPY 37...

Page 41: ...PANEL BEZEL ViewSonic Corporation VX2433wm 1 VX2433wm CN CONFIDENTIAL DO NOT COPY 38...

Page 42: ...KEYPAD CHASIS ViewSonic Corporation VX2433wm 1 VX2433wm CN CONFIDENTIAL DO NOT COPY 39...

Page 43: ...POWER BOARD LVD CABLE SHORT KEYPAD CABLE ViewSonic Corporation VX2433wm 1 VX2433wm CN CONFIDENTIAL DO NOT COPY 40...

Page 44: ...IF BOARD ViewSonic Corporation VX2433wm 1 VX2433wm CN CONFIDENTIAL DO NOT COPY 41...

Page 45: ...the FB pin by the end of the soft start the current Set point will be above the fault level FAULT flag is raised if the FAULT duration exceeds 80ms the output controller disable Resistor R808 R809 R81...

Page 46: ...C525 and C527 are connected between high voltage output connector and ground the divided AC voltage is inverted DC voltage through D502 D503 D508 and D509 The sense voltage feed back to VSEN pin 6 of...

Page 47: ...106 they are constant voltage diode of 6V2 are ESD protector Signal DDC SCL inputs via CN102 15 and then passes through ZD106 for ESD protection goes into U105 41 Signal DDC SDA inputs via CN102 12 an...

Page 48: ...ower key U105 74 recieves low pulse and then U105 will do the power on off If Power ON U108 103 LED_Blue will send out Low potential and then LED Blue on If Power OFF U108 103 LED_ Blue will send out...

Page 49: ...2 KEY_2 Auto adjustment control and selecting 3 KEY_Minu OSD control to adjust value to decrease 4 KEY_Plus OSD control to adjust value to increase 5 LED_B Blue LED lighting control 6 GND GND 7 LED_O...

Page 50: ...data input Channel E2 even 12 RXE2 Positive LVDS differential data input Channel E2 even 11 RXEC Negative LVDS differential clock input even 10 RXEC Positive LVDS differential clock input even 9 RXE3...

Page 51: ...st dimming signal will be ignored and the Fault Timer will start ramping up This signal is also used for short circuit protection If the voltage at OV2 is always above 4 9V the controller will treat t...

Page 52: ...al connect BOSC to VCC and apply the logic signal to the DBRT pin 8 DBRT I Burst Mode Digital Brightness Control Input The voltage range of 0V to 1 2V at DBRT linearly sets the burst mode duty cycle f...

Page 53: ...eaction Time OSD must fully appear within 0 5s after pushing Button 1 5 2 Hot Key Operation 1 Main Menu refer to segment 4 6 3 2 Input toggle Analog or DVI or HDMI refer to Appendix D To immediately a...

Page 54: ...ume and mute to default without OSD message 1 2 Toggle 720x400 and 640x400 mode when input 720x400 or 640x400 mode Default 720 x 400 1 Keep pushing 5 sec White Balance 1 It will not shown on user s gu...

Page 55: ...5 3 OSD Control 5 3 1 OSD table 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...

Page 56: ...n t be able 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...

Page 57: ...locked 6 When OSD appears on screen the OSD Lock Unlock short cut key will be disabled 5 4 Factory Defaults Item Defaults Item Defaults Contrast 70 OSD Time Out 15 Sec Brightness 100 OSD Background On...

Page 58: ...solution Notice function 9 The OSD should disappear after 10 sec or by pushing button 1 or 2 10 After the OSD turns off it will not show on again before next timing change input change or power off 11...

Page 59: ...DVI While no signal is detected for D Sub and DVI the following OSD message shall shows on 3 seconds then go in to power saving OSD Background Non transparent Image Blanking No signal for HDMI While...

Page 60: ...op position the slider shall go down to the bottom item Under Landscape mode Scroll down the slider When push the button on the bottom position the slider shall go back to the top item Dn Under Landsc...

Page 61: ...e OSD value setting Dn Decrease the OSD value Up Dn Recall to default Input Select 1 Show on existing input port by red color 2 Key button definition 1 Back to previous OSD status 2 Change to the sele...

Page 62: ...f 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 seco...

Page 63: ...o output 4 This function must memorize its status after DC AC Off to On Mute 1 Default Off 2 Key button definition 1 Back to Audio Adjust OSD 2 Switch to Volume adjustment Up Dn Toggle audio to Mute o...

Page 64: ...e the OSD value setting Dn decrease the OSD value setting 2 Change to the selected color setting Up Move up the slider Dn Move down the slider 4 Under DCR mode Dynamic Contrast On SRGB shall be disabl...

Page 65: ...scroll up the slider When push the button on the top position the slider shall go down to the bottom item H V Position Jump to Horizontal Position OSD directly Horizontal Position 1 Adjust range 0 to...

Page 66: ...rease the OSD value setting Dn Decrease the OSD value Dn Scroll down the slider When push the button on the bottom position the slider shall go down to the top item 2 Under Digital mode all the H V Po...

Page 67: ...tandard Over Drive off Advanced Over Drive Level 1 best quality with over drive Response Time 1 Show on existing Response Time setting by red color 2 Key button definition 1 Back to previous OSD statu...

Page 68: ...om 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 di...

Page 69: ...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 4 Save PC timing and DTV timing setting separately 5 Default RGB Mode VGA D...

Page 70: ...item Dn 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 No matter DCR on or off lamp current will be changed by ECO mode...

Page 71: ...and keep in Language Select OSD Setup Menu 1 Key button definition 1 Back to Main Menu OSD 2 Execute the selected function Up Scroll up the slider When push the button on the top position the slider s...

Page 72: ...se Set OSD language to Traditional Chinese and keep in Language Select OSD Resolution Notice Swap on and off the Resolution Notice function 2 When move to Resolution Notice OSD Background OSD Pivot th...

Page 73: ...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 t...

Page 74: ...d item of Sleep make monitor AC DC OFF ON it will reset to off 11 Key button definition 1 Back to previous OSD status 2 Change to the selected sleep time setting Up Rolling up the slider When push the...

Page 75: ...t on Language Power Lock Settings or Input Priority The On Screen Display OSD shall be an easy to use icon based menu through keypad OSD buttons or remote control unit The unit shall leave the factory...

Page 76: ...e to MCU via VGA Cable 5 7 1 Connect ISP board between monitor and PC as below configure ISP Board LCD Monitor D Sub Insert to Print Port 25pin ViewSonic Corporation VX2433wm 1 VX2433wm CN CONFIDENTIA...

Page 77: ...m CN CONFIDENTIAL DO NOT COPY 74 5 7 2 Using Novatek ISP Tool Update FW 1 Select ISP Choose the corresponding firmware load to MCU 2 Choose the corresponding firmware load to MCU Select Run start ISP...

Page 78: ...tire screen is an abnormal color that means the problem happen in the analog circuit part if only some scale appears abnormal color that stand the problem happen in the digital circuit part z If you c...

Page 79: ...P801 RT801 D801 Check pin5 of IC802 voltage about 2 3V Check R833 R835 R805 R834 R807 Check pin4of IC802 voltage about300 V Check R808 R806 Check pin7 of IC802 voltage is 16V Check FB801 D803 Is there...

Page 80: ...6 3 DC output voltage is unstable ViewSonic Corporation VX2433wm 1 VX2433wm CN CONFIDENTIAL DO NOT COPY 77...

Page 81: ...6 4 Output power is unstable ViewSonic Corporation VX2433wm 1 VX2433wm CN CONFIDENTIAL DO NOT COPY 78...

Page 82: ...Is there 14Vdc voltage on pin9 of IC501 Yes Is there high level voltage on pin8 of IC501 Is Ok R503 Are connected rightly CN501 CN502 Is there instantaneously pulse wave on pin14 pin11 of IC501 at th...

Page 83: ...Check Reset Waveform Check C153 Check C157 C158 X101 Check CCFL Enable Check pin102 of Invert fail U108fail Check R103 R105 R106 and Q103 NG OK OK OK OK NG OK OK NG NG NG Check Crystal Waveform Check...

Page 84: ...ble NG Check VLCD Is 5V NG Check panel Enable of Panel Enable OK Check Q101 Q104 and END OK OK OK Check VLCD singals Workmanship LVDS cable NG OK Panel Fail Check CN104 White Screen ViewSonic Corporat...

Page 85: ...S C able Reinsert NG hange LVDS Cable NG OK checkU108and SDO SCZ SCKSDI RSTN OK NG Workmanship check X101 C157 C158 SO CS SCK SI Check crystal Pin116 pin117 ViewSonic Corporation VX2433wm 1 VX2433wm C...

Page 86: ...7 Block Diagram ViewSonic Corporation VX2433wm 1 VX2433wm CN CONFIDENTIAL DO NOT COPY 83...

Page 87: ...8 Schematic Diagrams POWER DC TO DC ViewSonic Corporation VX2433wm 1 VX2433wm CN CONFIDENTIAL DO NOT COPY 84...

Page 88: ...VGA INPUT ViewSonic Corporation VX2433wm 1 VX2433wm CN CONFIDENTIAL DO NOT COPY 85...

Page 89: ...DVI INPUT ViewSonic Corporation VX2433wm 1 VX2433wm CN CONFIDENTIAL DO NOT COPY 86...

Page 90: ...HDMI INPUT ViewSonic Corporation VX2433wm 1 VX2433wm CN CONFIDENTIAL DO NOT COPY 87...

Page 91: ...SCALER ViewSonic Corporation VX2433wm 1 VX2433wm CN CONFIDENTIAL DO NOT COPY 88...

Page 92: ...AUDIO ViewSonic Corporation VX2433wm 1 VX2433wm CN CONFIDENTIAL DO NOT COPY 89...

Page 93: ...ViewSonic Corporation VX2433wm 1 VX2433wm CN CONFIDENTIAL DO NOT COPY 90...

Page 94: ...POWER SUPPLY ViewSonic Corporation VX2433wm 1 VX2433wm CN CONFIDENTIAL DO NOT COPY 91...

Page 95: ...INVERTER SUPPLY ViewSonic Corporation VX2433wm 1 VX2433wm CN CONFIDENTIAL DO NOT COPY 92...

Page 96: ...9 PCB Layout Diagrams MAIN BOARD SILKSCREEN TOP ViewSonic Corporation VX2433wm 1 VX2433wm CN CONFIDENTIAL DO NOT COPY 93...

Page 97: ...MAIN BOARD SILKCREEN BOTTOM ViewSonic Corporation VX2433wm 1 VX2433wm CN CONFIDENTIAL DO NOT COPY 94...

Page 98: ...POWER BOARD SILKSCREEN TOP ViewSonic Corporation VX2433wm 1 VX2433wm CN CONFIDENTIAL DO NOT COPY 95...

Page 99: ...POWER BOARD SILKSCREEN BOTTOM ViewSonic Corporation VX2433wm 1 VX2433wm CN CONFIDENTIAL DO NOT COPY 96...

Page 100: ...FOR FUNCTION SILKSCREEN TOP KEYPAD FOR POWER SILKSCREEN TOP KEYPAD FOR POWER SILKSCREEN BOTTOM KEYPAD FOR FUNCTION SILKSCREEN BOTTOM ViewSonic Corporation VX2433wm 1 VX2433wm CN CONFIDENTIAL DO NOT C...

Page 101: ...10 Exploded Diagram and Exploded Parts List ViewSonic Corporation VX2433wm 1 VX2433wm CN CONFIDENTIAL DO NOT COPY 98...

Page 102: ...E 00009255 618100200500R speaker 1 10 C 00009287 714050022600R ASSY COVER BACK W DVI LP2447 1 11 C 00009285 714011206600R ASSY STAND LP2447 1 12 C 00009286 714020019100R ASSY BASE LP2447 1 13 NA 50921...

Page 103: ...0008411 703500009900R KIT ACCESSORY VX2433wm 1 8 P 00009400 506120010901R BAG PLASTIC L380xW330xT0 05mm LP2447 1 9 CB 00008190 453030300370R DVI CABLE 1 10 CB 00008437 453010100380R VGA CABLE 1 11 P 0...

Page 104: ...E18L3 722 ROHS B 00009290 792131500020R VSA VSI VSCN 2 1 2 16 Front Bezel ASSY FRONT BEZEL LP2447 C 00009284 714030024100R VSA VSI VSCN 1 Main Source 17 Stand Assembly ASSY STAND LP2447 C 00009285 714...

Page 105: ...mm 8 3 27 NA 506039007200R CORNER PAPER 1200x50x50xT5mm LE1729 4 2 28 NA 506039007600R CORNER PAPER 900x50x50xT5mm 4 2 29 NA 506038003500R CARDBOARD L1270xW1016xT4mm LE1939 2 1 30 NA 506036005900R CAR...

Page 106: ...2447 100 71 NA 502090103400R CHASSIS W DVI LP2447 100 72 NA 502020100600R BRACKET HINGE LP2447 100 73 NA 505040209000R INSULATOR MYLAR L21 W18 T0 5 LE19F6 100 74 B 00009424 792641300500R PCBA I F BOAR...

Page 107: ...rt 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 G...