ViewSonic VX2235wm-1 User Manual Download

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ViewSonic VX2235wm-1

Model No. VS11349

22” Color TFT LCD

Display

(VX2235wm-1_SM Rev. 1a Aug. 2006)

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

Service Manual

Summary of Contents for VX2235wm-1

Page 1: ...ViewSonic VX2235wm 1 Model No VS11349 22 Color TFT LCD Display VX2235wm 1_SM Rev 1a Aug 2006 ViewSonic 381 Brea Canyon Road Walnut California 91789 USA 800 888 8583 Service Manual...

Page 2: ...r expressed or implied with respect to the contents hereof and specifically disclaims any warranty of merchantability or fitness for any particular purpose Further ViewSonic reserves the right to revi...

Page 3: ...otices 1 2 Specification 3 3 Front Panel Function Control Description 13 4 Circuit Description 19 5 Adjustment Procedure 20 6 Troubleshooting Flow Chart 54 7 Recommended Spare Parts List 62 8 Exploded...

Page 4: ...ipe off water drops immediately Long contact with water may cause discoloration or spots 4 When the panel surface is soiled wipe it with absorbent cotton or other soft cloth 5 Since the panel is made...

Page 5: ...cover of the monitor Do not touch the surface of the polarizer Surface of the panel is pressed by fingers this may cause MURA Take out the monitor with cushion Take out the monitor by grasping the LCD...

Page 6: ...ox NextVision 6 Yes Power Voltage AC 100 240V 50 60Hz Yes On Mode Typ 48 W Power Consumption Off Mode Max 1 W Audio 3W THD 10 Max Yes Tilt 20 5 Yes Swivel No Pivot No Ergonomics Height Adjust No OSD C...

Page 7: ...g Separate Composite and Sync on Green 2 TMDS Digital 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...

Page 8: ...le to withstand 1 5 times nominal line voltage for one cycle with no damage Power Supply Missing Cycle Immunity Shall be able to function properly without reset or visible screen artifacts when cycle...

Page 9: ...ll be not full screen Still at the center And the OSD will be 640x350 640x400 720x400 primary 720x400 3 640 x 400 60 Hz 31 5 KHz For Analog sync switch 640x400 60Hz and 640x480 60Hz by 1 2 short cut k...

Page 10: ...at the center and the information OSD shows 800x600 16 800 x 600 56 Hz 35 1 KHz 17 800 x 600 60 Hz 37 9 KHz 18 800 x 600 72 Hz 48 1 KHz 19 800 x 600 75 Hz 46 9 KHz 20 800 x 600 85 Hz 53 7 KHz 21 832...

Page 11: ...75 Hz 75 KHz 51 1600 x 1200 60 Hz 75 KHz 52 1680 x 1050 60 Hz 65 3 KHz For analog sync Switch 1400x1050 60Hz and 1680x1050 60Hz by 1 2 short cut key primary 1680x1050 60Hz 1 Tolerance 2KHz if the rang...

Page 12: ...here should be no cycling Reaction Time OSD must fully appear within 0 5s after pushing Button 1 Short Cuts Function from the button s 1 Main Menu 2 Input toggle Analog or Digital To immediately activ...

Page 13: ...er to the detail in the Appendix C Function descriptions OSD Lock short cuts function for the buttons The OSD lock will be activated by pressing the front panel control buttons 1 for 10 seconds If the...

Page 14: ...te Memory Recall should have no effect for Language Power Lock User Color Settings or Input Priority Resolution Notice Actions 1 Resolution Notice OSD should show on screen after changing to non nativ...

Page 15: ...B at 0 5m FO 300 Hz Line input connection 3 5 mm stereo jacks Vibration There should be no audible vibration resonance at volume 100 treble bass in def Value Screen image There should be no affect on...

Page 16: ...10 Main Menu with OSD controls Front Control Panel shown below in detail Scrolls through menu options and adjusts the displayed control Also a shortcut to display the Contrast adjustment control scree...

Page 17: ...or down T buttons 5 To save the adjustments and exit the menu press button 1 twice The following tips may help you optimize your display Adjust the computer s graphics card so that it outputs a 1680 x...

Page 18: ...Audio Adjust Volume increases the volume decreases the volume and mutes the audio Mute temporarily silences audio output Color Adjust provides several color adjustment modes including preset color te...

Page 19: ...R green G and blue B 1 To select color R G or B press button 2 2 To adjust selected color pressSandT Important If you select RECALL from the Main Menu when the product is set to a Preset Timing Mode...

Page 20: ...e from the short cut keys Standard is for general windows environment and monitor default setting Text optimized for text editing and viewing in a word processing environment Cinema optimized for movi...

Page 21: ...et at a resolution other than 1680 x 1050 the following screen appears OSD Position allows the user to move the OSD menus and control screens OSD Timeout sets the length of time the OSD screen is disp...

Page 22: ...pin package to save cost and make the design easier 2 RTD2120 This chip is the micro processor of LCD monitor It uses the design ware DW8051 of Synopsys as the 8051 core of this chip and is compatibl...

Page 23: ...ring which time you will notice the image change 3 Firmware Test Patten Burn in Model Refer to Chap3 Hot Keys for Function Control Make sure the F W is the latest version 4 DCC Test Patten EDID progra...

Page 24: ...tion Item Bright Dot Partial Line Defect 14 Gray_Scale_0 100_V64 Test Signal 1280 1024 60Hz Test Pattern Vertical 64 256 Gray Scale Right Left From 0 to 100 White Inspection Item Line Defect Function...

Page 25: ...ViewSonic Corporation Confidential Do Not Copy VX2235wm 1 22 Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8...

Page 26: ...ocedure 1 To setup ISP environment Hardware PC or Notebook Parallel Printer cable ISP tool Fig 1 Software ISP driver If the O S was Win2000 or Win XP please have to install PORT95NT exe Fig1 In order...

Page 27: ...ViewSonic Corporation Confidential Do Not Copy VX2235wm 1 24 Fig 2...

Page 28: ...User could download ISP driver and PORT95NT install file from Myson Century website www myson com tw 2 2 After extracting the zip file the total files list as Fig 2 2 and double click the file of setu...

Page 29: ...ial Do Not Copy VX2235wm 1 26 2 4 Keep default setting or press Change button for selecting the path that you want and then press Next button to continue see Fig 2 4 2 5 Press Install button to contin...

Page 30: ...tion Confidential Do Not Copy VX2235wm 1 27 2 6 The Installer Information shows package warning press Ignore button to continue see Fig 2 6 Fig 2 6 2 7 Installation has finished press Finish button se...

Page 31: ...opy VX2235wm 1 28 3 ISP security code 3 1 After installation we could find the shortcut in the setting path or the program bar default setting see Fig 3 1 Fig 3 1 2 2 Security file is a key to use ISP...

Page 32: ...rning is used to remind user of that different CPU rate may cause ISP function fail it is limited by IIC protocol press button see Fig 3 3 Fig 3 3 2 4 Press Create Security File button to key in secur...

Page 33: ...30 3 5 At least 2 Command No of security code see Fig 3 5 and different security code between hardware ISP and software ISP The security code of software ISP is set by user while coding but the secur...

Page 34: ...wSonic Corporation Confidential Do Not Copy VX2235wm 1 31 3 6 Fig 3 6 shows the setting for security code of hardware ISP it needs 4 Command No and key in command sequentially for 94 94 AC CA 53 Fig 3...

Page 35: ...Fig 3 7 shows the setting for security code of software ISP it needs 2 Command No and key in command sequentially for 7C 4C 77 The Command No and command must be set by user while coding About the det...

Page 36: ...o the MCU and select Auto item then press RUN button see Fig 4 1 4 2 If user changes the MTV type it must load file again or the buffer of load file will be cleared 4 3 CRC cyclic redundancy check the...

Page 37: ...to read MCU content 5 1 Only software ISP could read the MCU content it is according to program the boot code while coding The limitation is used for the security of customer s code Select Read Target...

Page 38: ...ViewSonic Corporation Confidential Do Not Copy VX2235wm 1 35 5 2 If user uses hardware ISP to read MCU content it shows as Fig 5 2 Fig 5 2...

Page 39: ...ViewSonic Corporation Confidential Do Not Copy VX2235wm 1 36 6 Re entry the ISP Mode When you could not select or click Reset MCU button and enter ISP mode again you refer the message as below...

Page 40: ...X2235wm 1 37 Note 1 Disable the Enter ISP Mode option to avoid the error message display 2 If you using the MTV312M64 or before MCU serials the MCU will always in ISP Mode even programming fail or era...

Page 41: ...he pin of HSCL 1 and HSDA 1 should keep in enable 4 Only software ISP could read the MCU content 5 MTV212M MTV312M MTV230M MTV412M MTV512M CS8954 support software ISP 7 3 Boot code of software ISP 1 I...

Page 42: ...ViewSonic Corporation Confidential Do Not Copy VX2235wm 1 39 7 4 The followings show the relationship between the code and the security code...

Page 43: ...wSonic Corporation Confidential Do Not Copy VX2235wm 1 40 8 ISP Adaptor Schematic 9 Adaptor Linking The Monitor Set Connect with Printer Cable 25Pins to 25Pins PC HOST Connect with VGA Cable ISP Adapt...

Page 44: ...on film to protect the monitor Figure 1 1 2 Put the monitor in the PE bag and seal the bag with tape Figure 2 1 3 Put the cushion into the carton then place the monitor on the cushion Figure 3 1 4 Put...

Page 45: ...Not Copy VX2235wm 1 42 Monitor Assembly and Disassembly 1 Separate Stand Assy 1 1 Remove Stand Cover Step 2 Remove the Stand Cover Step 5 Completed Step 3 Loose and remove 4 screws Step 1 Remove the...

Page 46: ...VX2235wm 1 43 2 Separate Rear Cover Rear Case Assy Separate Bezel hooks to take Bezel and Rear Cover apart Step 1 Loose and remove 2 screws Step 2 Separate Bezel hooks to take Bezel and Rear Cover ap...

Page 47: ...1 44 3 Remove Power Board and AD Board 3 1 Remove Metal Cover Step 1 Remove FFC from OSD Board Step 2 Loose and remove 4 screws Step 4 Remove 2 pieces of Backlight wires Step 3 Lift up LCD module and...

Page 48: ...ViewSonic Corporation Confidential Do Not Copy VX2235wm 1 45 Step 6 Loose and remove 2 screws Step 7 Loose and remove 2 screws Step 8 Loose and remove 4 screws Step 9 Remove the PCBA Cover...

Page 49: ...n Confidential Do Not Copy VX2235wm 1 46 3 2 Remove Power Board and AD Board Step 1 Loose and remove 4 screws Step 2 Remove Lips Board Step 3 Remove 2 pieces of FFCs Step 4 Remove the FFC Step 5 Loose...

Page 50: ...l Do Not Copy VX2235wm 1 47 4 Change New AD Board and Power Board Step 1 Place new AD Board And fasten 4 fixed screws Step 3 Insert FFC Step7 Completed Step 4 Insert 2 pieces of FFCs Step 6 Remove AD...

Page 51: ...ViewSonic Corporation Confidential Do Not Copy VX2235wm 1 48 Step 5 Insert new Lips Board Step 6 Fasten 4 fixed screws Step 7 Completed...

Page 52: ...ViewSonic Corporation Confidential Do Not Copy VX2235wm 1 49 5 Remove OSD Board Step 1 Separate both Audio Cable Step 2 Take OSD Board apart Step 3 Completed...

Page 53: ...Do Not Copy VX2235wm 1 50 6 Change New OSD Board 7 Add Cover to AD PCB Heatsink Step 1 Place New OSD Board Step 2 Insert Audio cable to connectors of New OSD Board Step 1 Join the PCB Cover Step 2 Fas...

Page 54: ...Confidential Do Not Copy VX2235wm 1 51 Step 3 Fasten 2 fixed screws Step 4 Fasten 2 fixed screws Step 5 Insert 2 pieces of Backlight wires Step 6 Insert 2 pieces of Backlight wires Step 7 Join LCD mo...

Page 55: ...tion Confidential Do Not Copy VX2235wm 1 52 8 Rear Assy Stand Assembly Step 10 Completed Step 1 Place Rear Cover Step 2 Fasten 2 fixed screws Step 3 Place the Stand Assy Step 8 Fasten 4 fixed screws S...

Page 56: ...ViewSonic Corporation Confidential Do Not Copy VX2235wm 1 53 Step 5 Join the Stand Cover Step 6 Join the Seat Assy Step 7 Completed Step 4 Fasten 4 fixed screws...

Page 57: ...Repair Testing Flash Dots Bright Dot Dark Dot Backlight Light Leakage Mura Image Sticking Brightness spot Particle Dot Defect Check Panel Light On Test Next Step Panel Change Should be Performed to L...

Page 58: ...xt Step TEST NG A Completed AD B Change CNT B Change Inverter B Change Power B Change Check Panel Display Noise Beat Display Shut Down Beat Display Flicker No Backlight Display Wave B Panel Change Ada...

Page 59: ...l Next Step TEST NG Completed B Booting Delay C Beat Display No Backlight Check PCBA AD B Change Inverter B Change Power B Change Check Panel Check PCBA Panel Change Power B Change Inverter B Change C...

Page 60: ...ical Weak Line Peculiar Smell Check PCBA Check Panel Horizontal Weak Line Next Step TEST NG AD B Change Panel Change Horizontal Band Defect C Vertical Band Defect Power Saving Display Abnormal Check P...

Page 61: ...Check Wire AD B Change CNT B Change OSD Cable Inverter B Power B Change OSD B Change AC Power Change DC Power CNT Cable Change Adapter Change Check Adapter Check PCBA Check Wire OSD Cable Inverter B...

Page 62: ...Jiggle OSD Display Abnormal Check BIOS Inverter B Power B Change OSD B Change D sub cable VGA cable DVI cable BIOS Update Abnormal Loudspeaker Check PCBA Check Wire AD B Change CNT B Change No Voice V...

Page 63: ...AD B Change AD B Change Power B Change Panel Change CNT B Change CNT B Change Other Abnormal Display Next Step TEST NG Complete TV Function Display Abnormal Panel Change Should be Performed to Level...

Page 64: ...e value with the preset values Please refer to Appendix Display Mode z Fuzzy Image Adjust Phase z Image too bright Adjust brightness and contrast by OSD z Image too dark Adjust brightness and contrast...

Page 65: ...mmx76 2 mm DC 00008039 77 D010936 1 18 CD Rom Menu DC 00008040 76 D011105 1 19 Hardware SCREW 3 P 0 5 mm L 4 mm HW 00000553 42A9930008 13 20 SCREW 3 P 0 5 mm L 4 mm HW 00000553 42A9930008 2 21 Screw M...

Page 66: ...E1 H0P 900 mmx50 mmx0 mm Symbio OPP 0 005 29 N A 73 D001327 Tape 82296 mmx48 mmx0 045 mm cmo OPP Green I 0 014 30 N A 78 D003113 Pallet A190E3 H02_acer Wooden KD HT 1209 mmx1066 mmx135 mm Hua Sun Pape...

Page 67: ...8 Exploded Diagram and Exploded Parts List ViewSonic Corporation Confidential Do Not Copy VX2235wm 1 64...

Page 68: ...Backlight Unit A220Z for MFM 1 11 N A N A Maylar 1 12 N A 27 D008552 Lips Without Audio DAC 19M009 BF 1 13 N A 35 D009418 PCBA for A220Z1 Z01 P 1 14 N A 41 D008024 Cover AD Assy 1 15 N A 32 D009479 F...

Page 69: ...78 D011075 EPS Foam Bottom 1 5 P 00008034 78 D011076 EPS Foam Top 1 6 C 00008044 40 D010947 Seat Assy 1 7 A 00005071 32 D002330 Power Cord 1 8 CB 00005851 32 D002132 Monitor Cable 1 9 CB 00005678 32F...

Page 70: ...ion Confidential Do Not Copy VX2235wm 1 67 9 Block Diagram OSD Key Pad Audio Out D sub Analog Video Speaker AC Power LDO Main Board LIPS Backlight LCD Module DC 5V DVI D Digital Video 5V Signal Audio...

Page 71: ...KEY_DOWN KEY_UP SOURCE_SELECT AUTO_ADJ PANEL_ON OFF PWR_SW YOUT DDC_DAT DDC_CLK LED_GRN LED_ORG INV_ON OFF DDC2_SCL DDC2_SDA CONNECT DCDC_ON OFF MUTE VGA_5V BUS_POWER V5A RESET_MCU AUDIO_FUNCTION RESE...

Page 72: ...GND_POWER GND_POWER GND_POWER GND_POWER GND_POWER TP 1 TP5 TP5 1 2 FB1 FB1 1 6 2 7 3 8 4 9 5 11 12 13 14 15 10 CON1 CON1 L1 L1 R15 R15 R6 R6 C13 C13 1 2 Z1 Z1 1 3 2 D1 D1 1 2 FB3 FB3 C11 C11 R13 R13...

Page 73: ...POWER 1 3 2 D8 D8 C16 C16 C22 C22 1 3 2 D6 D6 C20 C20 1 3 2 D4 D4 DAT2 1 DAT2 2 2 4shield 3 DAT4 4 DAT4 5 DDC SCL 6 DDC SDA 7 VSYNC 8 R 25 HSYNC 28 DAT1 9 DAT1 10 1 3shield 11 DAT3 12 DAT3 13 5V 14 SY...

Page 74: ...6 1 2 D18 D18 R30 R30 C29 C29 1 2 D17 D17 R19 R19 R26 R26 1 2 D16 D16 R39 R39 C26 C26 1 3 2 Q1 Q1 R21 R21 R41 R41 GND 7 VCC 14 1B 3 2B 6 3B 8 4B 11 1A 2 2A 5 3A 9 4A 12 2OE 4 1OE 1 3OE 10 4OE 13 U1 U1...

Page 75: ...R43 R52 R52 C33 C33 R45 R45 1 2 3 Q6 Q6 R48 R48 R54 R54 R51 R51 R55 R55 C38 C38 R53 R53 R44 R44 R42 R42 1 2 FBS1 FBS1 C30 C30 R46 R46 C34 C34 C37 C37 R75 R75 C36 C36 C35 C35 R49 R49 1 2 3 Q14 Q14 1 2...

Page 76: ...LECT AUTO_ADJ LED_O A 1 B 2 C 3 D 4 D 5 C 6 B 7 A 8 CA CP1 CA CP1 R59 R59 GND 1 VO 3 3V 2 VI 5V 3 VO 3 3V 4 U6 U6 TP 1 AUTO_ADJ1 AUTO_ADJ1 R60 R60 TP 1 GVOFF1 GVOFF1 L5 L5 1 2 B2 B2 GND 1 VO 3 3V 2 VI...

Page 77: ...11 PCB Layout Diagrams ViewSonic Corporation Confidential Do Not Copy VX2235wm 1 74...

Page 78: ...ViewSonic Corporation Confidential Do Not Copy VX2235wm 1 75...

Page 79: ...ViewSonic Corporation Confidential Do Not Copy VX2235wm 1 76...

Page 80: ...rcuit Description 5 Adjustment Procedure 6 Troubleshooting Flow Chart 7 Recommended Spare Parts List 8 Exploded Diagram and Exploded Parts List 9 Block Diagrams 10 Schematic Diagrams 11 PCB Layout Dia...

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