ViewSonic VX922-1 User Manual Download

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ViewSonic VX922-1

Model No. VS10162

19” Color TFT LCD

Display

(VX922-1_SM Rev. 1c Nov. 2006)

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

Service Manual

Summary of Contents for VX922-1

Page 1: ...ViewSonic VX922 1 Model No VS10162 19 Color TFT LCD Display VX922 1_SM Rev 1c Nov 2006 ViewSonic 381 Brea Canyon Road Walnut California 91789 USA 800 888 8583 Service Manual...

Page 2: ...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 revis...

Page 3: ...scription 12 4 Circuit Description 18 5 Adjustment Procedure 28 6 Troubleshooting Flow Chart 78 7 Recommended Spare Parts List 84 8 Exploded Diagram and Exploded Parts List 86 9 Block Diagram 89 10 Sc...

Page 4: ...ause of the high voltage used in the inverter circuit the voltage is exposed in such areas as the associated transformer circuits 4 LCD Module Handling Precautions 4 1 Handling Precautions 1 Since fro...

Page 5: ...e LCD contains a small amount of mercury Please follow local ordinances or regulations for disposal 13 The LCD module contains a small amount of materials having no flammability grade The LCD module s...

Page 6: ...he monitor Do not touch the surface of the polarizer If the surface of the panel is pressed by fingers this may cause MURA Take out the monitor by grasping the cushion If the monitor is removed by gra...

Page 7: ...hods Incorrect Methods Place the monitor on a clean soft foam pad If the monitor is placed on foreign objects that could scratch the surface of the panel 4 ViewSonic Corporation Confidential Do Not Co...

Page 8: ...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 damage to monitor Sync Signal...

Page 9: ...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 of AC power is randomly missing at nominal inp...

Page 10: ...No 16 832 x 624 75Hz 49 7kHz Yes Yes 17 1024 x 768 60Hz 48 4kHz Yes Yes 18 1024 x 768 70Hz 56 5kHz Yes Yes 19 1024 x 768 72Hz 58 1kHz Yes Yes 20 1024 x 768 75Hz 60 0kHz Yes Yes 21 1024 x 768 85Hz 68 6...

Page 11: ...Max 250 cd m2 Typ after 30 minute warm up 200 cd m2 Min after 30 minute warm up Brightness Uniformity 70 Entire Area min Contrast Ratio 650 1 typ 560 1 min Color Depth 16 2 million colors 6 bits 2 bi...

Page 12: ...ightness Max 300 cd m2 Typ after 30 minute warm up 240 cd m2 Min after 30 minute warm up Brightness Uniformity 70 Entire Area min Contrast Ratio 700 1 typ 450 1 min Color Depth 16 2 million colors 6 b...

Page 13: ...Luminance Lv Max Condition Contrast 100 Brightness 100 Color Temperature 6500K Same as the Luminance in section 4 7 TFT LCD PANEL Lv Def Condition Contrast Default Brightness Default Color Temperatur...

Page 14: ...Artifacts No visible streaking sag or smearing artifacts when driven by the specified video cards in the primary mode and after user adjustment to best condition Power Supply and Grounding Artifacts...

Page 15: ...rolls through menu options and adjusts the displayed control Also a shortcut to display the Contrast adjustment control screen Displays the control screen for the highlighted control Also toggles betw...

Page 16: ...e the adjustments and exit the menu press button 1 twice The following tips may help you optimize your display Adjust your computer s graphics card so that it outputs a 1280 x 1024 60Hz video signal t...

Page 17: ...ckground black level of the screen image Input Select allows you to toggle between an analog and a digital signal Color Adjust provides several color adjustment modes preset color temperatures and Use...

Page 18: ...Timing Mode colors return to the 6500K factory preset Information displays the timing mode video signal input coming from the graphics card in your computer the LCD model number the serial number and...

Page 19: ...aracters 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 allows you to choose the language use...

Page 20: ...SD Background allows you to turn the On Screen Display background On or Off Memory Recall returns the adjustments back to factory settings if the display is operating in a factory Preset Timing Mode l...

Page 21: ...INPUT SELECT up arrow button down arrow button button 1 MENU 1 2 The D sub 15 pin connector DVI I connector and AC IN jack are located on the back side of the cabinet 1 3 The OSD menu includes the fol...

Page 22: ...10 RX1 TMDS positive differential input channel 1 11 GND Logic Ground 12 RX3 Reserved No connection 13 RX3 Reserved No connection 14 5V Power 15 GND Logic Ground 16 HP SENSE Pin Pull High 17 RX0 TMDS...

Page 23: ...ay can automatically detect and display input signals whose timing falls within the following limits Horizontal Sync frequency 30 82 kHz Vertical Sync frequency 56 75Hz 3 4 Signal level and input impe...

Page 24: ...Serial Number Not Used 16 Week of Manufacture 01 17 Year of Manufacture 2005 10 17 Complete Serial Number See Descriptor Block 18 EDID Version Number 1 19 EDID Revision Number 3 20 VIDEO INPUT DEFINIT...

Page 25: ...ing Time 408 pixels Sync Offset 48 pixels Sync Pulse Width 112 pixels Border 0 pixels Frequency 63 98 KHz Vertical Active Time 1024 lines Blanking Time 42 lines Sync Offset 1 lines Sync Pulse Width 3...

Page 26: ...Digits of Serial Number Not Used 16 Week of Manufacture 01 17 Year of Manufacture 2005 10 17 Complete Serial Number See Descriptor Block 18 EDID Version Number 1 19 EDID Revision Number 3 20 VIDEO INP...

Page 27: ...anking Time 408 pixels Sync Offset 48 pixels Sync Pulse Width 112 pixels Border 0 pixels Frequency 63 98 KHz Vertical Active Time 1024 lines Blanking Time 42 lines Sync Offset 1 lines Sync Pulse Width...

Page 28: ...ek RTD2523 The RTD2523 is a graphics processing IC designed for LCD monitors It provides all key IC functions required for LCD displays On chip functions include a high speed triple ADC PLL high scali...

Page 29: ...ed to serve as a 3 3 V or 2 5 V regulator 6 1 3 Power Regulator AIC1117CY U1 U3 The AIC1117CY is a monolithic control IC containing the primary functions required for DC to DC converters The device co...

Page 30: ...urrent 3 5A Turn on delay 3secs 6 2 Power Inverter Board This is a specific power inverter board for VX912 monitor with output of 40W 12V 3 5A It provides 12 VDC to drive the four cold cathode fluores...

Page 31: ...to decrease the brightness Press the 2 button to enter the contrast adjustment page Press the 1 button to exit the page 3 Input Select Page Press the 2 button to switch to digital input mode 4 Color...

Page 32: ...to shift the image upward Press the button to shift the image downward 2 Horizontal Size Item Press the 2 button to enter the horizontal size adjustment page Press the 1 button to exit the page Press...

Page 33: ...tton to shift the menu to the right Press the button to shift the menu to the left b Vertical Position Option Press the 2 button to enter the horizontal position adjustment page Press the 1 button to...

Page 34: ...the button to highlight the previous item or the button to highlight the next item Press the 1 Menu button to exit the Main Menu 1 Auto Image Adjust Page Press the 2 button to execute the auto image a...

Page 35: ...e manual image adjustment page Press the 1 button to exit the page Press the button to highlight the previous item or the button to highlight the next item 1 Sharpness Item Press the 2 button to enter...

Page 36: ...m Press the 2 button to enter the OSD time out adjustment page Press the 1 button to exit the page Press the button to increase the OSD time out Press the button to decrease the OSD time out 5 OSD Bac...

Page 37: ...f the screen If the V Sync signal rate is greater than than 85Hz or its resolution is greater than SXGA the Out of Range message will appear in the center of the screen Activating Factory Mode and Bur...

Page 38: ...2Hz 37 9kHz Yes Yes 8 640 x 480 75Hz 37 5kHz Yes Yes 9 640 x 480 85Hz 43 27kHz Yes Yes 10 720 x 400 70Hz 31 5kHz Yes Yes 11 800 x 600 56Hz 35 1kHz Yes Yes 12 800 x 600 60Hz 37 9kHz Yes Yes 13 800 x 60...

Page 39: ...re set to 100 Pattern 2 3 RGB color performance RGB color Check the color temperature of RGB signal color Pattern 3 4 5 4 Sub pixel defect RGB color Check for sub pixel defects Pattern 3 4 5 5 Full wh...

Page 40: ...Pattern 5 Pattern6 Pattern 7 Pattern 8 Pattern 9 37 ViewSonic Corporation Confidential Do Not Copy VX922 1...

Page 41: ...puter LPT cable Fixture LM5ISP Firmware upgrade program When examining a monitor please check whether the firmware version is the latest If not please follow the procedure below to upgrade to the late...

Page 42: ...rdware PC or notebook parallel printer cable ISP tooling Software If OS is Win2000 or WinXP please install PORT95NT exe In order to ensure that the system can execute the ISP program please adjust the...

Page 43: ...ble click the PORT95NT exe icon in Windows and install the program see Fig 0 1 3 Continue through the installation process by pressing Next four times see Fig 0 2 40 ViewSonic Corporation Confidential...

Page 44: ...ig 0 3 Fig 0 4 4 Choose Typical then press Next see Fig 0 3 5 Continue through the installation process by pressing Next four times see Fig 0 4 41 ViewSonic Corporation Confidential Do Not Copy VX922...

Page 45: ...0 5 Install ISP 1 The user may download the ISP driver and PORT95NT installation package from the Myson Century website www myson com 2 The files extracted from the ZIP file are listed in Fig 1 0 Doub...

Page 46: ...ess the Next button to continue see Fig 1 1 4 Press the Change button to change the install path if desired and then press the Next button to continue see Fig 1 2 43 ViewSonic Corporation Confidential...

Page 47: ...Fig 1 3 Fig 1 4 5 Press the Install button to continue see Fig 1 3 6 When installation has finished press the Finish button see Fig 1 4 44 ViewSonic Corporation Confidential Do Not Copy VX922 1...

Page 48: ...he program menu default setting see Fig 2 1 2 The security file is a key to use ISP functions press the OK button See Fig 2 2 3 The warning shown in Fig 2 3 is used to remind the user that a CPU rate...

Page 49: ...bus Security code 4 As shown in Fig 2 4 press the Create Security File button to key in a security code and use the slider bar to adjust the speed of the IIC bus 46 ViewSonic Corporation Confidential...

Page 50: ...t requires two command numbers and the commands must be keyed in sequentially 7C 4C 77 The command numbers and commands must be set by the user while coding For more details please refer to section 6...

Page 51: ...pendix C Using ISP to program MCU 1 As shown in Fig 3 1 select the MTV type first load the binary or intel hex file to be programmed into the MCU click OK then press the RUN button 48 ViewSonic Corpor...

Page 52: ...d file will be cleared 3 CRC cyclic redundancy check the host can check the result in the CRC register instead of reading every byte in flash The Check MCU CRC OK message indicates that the host has v...

Page 53: ...ellowing picture Please must set the monitor in USER mode not factory mode Open DDC file After installation we could find the shortcut in the setting path or the program bar default setting 50 ViewSon...

Page 54: ...ease press Select Analog DDC file to be loaded Step 1 Software will pop out a message Select the Analog DDC file to load Step 2 Press Open icon 51 ViewSonic Corporation Confidential Do Not Copy VX922...

Page 55: ...Check DDC data Check whether the DDC data is loaded in the TVI_Tool table 52 ViewSonic Corporation Confidential Do Not Copy VX922 1...

Page 56: ...Write DDC to IC Step 1 Select 512M Step 3 Key in the S N Select Detailed Timeings Select Block 2 Key in the S N on the monitor 53 ViewSonic Corporation Confidential Do Not Copy VX922 1...

Page 57: ...Step 2 Press Write to IC icon 54 ViewSonic Corporation Confidential Do Not Copy VX922 1...

Page 58: ...Step 4 Check the result Write Success you will see Compare OK message in yellow column 55 ViewSonic Corporation Confidential Do Not Copy VX922 1...

Page 59: ...se recheck whether following settings is correct b 1 Check the power cable is plug on b 2 Check the signal cable is correct b 3 Check you are in USER mode not in Factory mode b 4 Check whether you loa...

Page 60: ...VI cable as bellowing picture Please must set monitor in USER mode not factory mode Open DDC file After installation we could find the shortcut in the setting path or the program bar default setting 5...

Page 61: ...Please press 58 ViewSonic Corporation Confidential Do Not Copy VX922 1...

Page 62: ...Select DVI DDC file to be loaded Step 1 Software will pop out a message Select the Digital DDC file to load Step 2 Press Open icon 59 ViewSonic Corporation Confidential Do Not Copy VX922 1...

Page 63: ...Check DDC data Check whether the DDC data is loaded in the TVI_Tool table 60 ViewSonic Corporation Confidential Do Not Copy VX922 1...

Page 64: ...Write DDC to IC Step 1 Select 24C02 61 ViewSonic Corporation Confidential Do Not Copy VX922 1...

Page 65: ...Step 2 Key in the S N a Select Detailed Timeings b Select Block 2 Key in the S N on the monitor 62 ViewSonic Corporation Confidential Do Not Copy VX922 1...

Page 66: ...Step 2 Press Write to IC icon 63 ViewSonic Corporation Confidential Do Not Copy VX922 1...

Page 67: ...Step 3 Check the result Write Success you will see Compare OK message in yellow column 64 ViewSonic Corporation Confidential Do Not Copy VX922 1...

Page 68: ...se recheck whether following settings is correct b 1 Check the power cable is plug on b 2 Check the signal cable is correct b 3 Check you are in USER mode not in Factory mode b 4 Check whether you loa...

Page 69: ...Please use VGA cable as bellowing picture Please must plug off power cable first and then plug on power cable again Read Analog DDC from IC Step 1 Press to read Analog DDC from IC 66 ViewSonic Corpora...

Page 70: ...Step 2 Check the result a Read success you will seed Read OK message 67 ViewSonic Corporation Confidential Do Not Copy VX922 1...

Page 71: ...ease recheck following settings is correct b 1 Check the power cable is Re plug on b 2 Check the signal cable is correct and well plugged b 3 Check you are in USER mode not in Factory mode 68 ViewSoni...

Page 72: ...ase conntect VGA DVI cable as bellowing picture Please must plug off power cable first and then plug on power cable again Read DVI DDC from IC Step 1 Press to read DVI DDC from IC 69 ViewSonic Corpora...

Page 73: ...you will see Error Read message Please recheck following settings is correct b 1 Check the power cable is Re plug on b 2 Check the signal cable is correct and well plugged b 3 Check you are in USER mo...

Page 74: ...procedure 1 Apply protective film to the display surface 2 Put the monitor in EPE bag and seal the bag with tape 3 Fit the cushions onto the monitor 71 ViewSonic Corporation Confidential Do Not Copy...

Page 75: ...the accessories into the carton QSG Power cord Then close the carton Disassembling the monitor 1 Turn the monitor to face the back and remove the I O cover 2 Remove the stand back cover 72 ViewSonic...

Page 76: ...ack hinge screws and separate the stand and head pieces 4 Place the monitor face down on a soft flat stable surface 5 Separate the back cover and the front bezel 73 ViewSonic Corporation Confidential...

Page 77: ...the button board B B and pull the cable out from the 7 Remove the B B 8 Remove the screws on the PCB shield remove the PCB shield Screws connector on the main board M B 74 ViewSonic Corporation Confi...

Page 78: ...9 Remove the MB LCD connector and loosen the four screws on the PCB holder Screws 10 Separate the PCB holder from the panel 75 ViewSonic Corporation Confidential Do Not Copy VX922 1...

Page 79: ...11 Loosen the four screws on the sides of the panel 12 Remove the front bezel and panel 76 ViewSonic Corporation Confidential Do Not Copy VX922 1...

Page 80: ...13 Remove the four hexagon screws beside the DVI D SUB connectors 14 Remove the screws that fix the power board and main board 77 ViewSonic Corporation Confidential Do Not Copy VX922 1...

Page 81: ...1 Display color abnormal 6 Troubleshooting Flow Chart 78 ViewSonic Corporation Confidential Do Not Copy VX922 1...

Page 82: ...heck CN 6 R79 Change M B NO NO NO NO Change adaptor Repair open short Change X1 X2 Change failed part NO Fix power supply circuit OK OK Open short Pin 40 of U6 Check power supply 12V 5V 2 5V 3 3V 2 Mo...

Page 83: ...3 Monitor white screen 80 ViewSonic Corporation Confidential Do Not Copy VX922 1...

Page 84: ...4 Monitor black screen 81 ViewSonic Corporation Confidential Do Not Copy VX922 1...

Page 85: ...5 Analog input always shows NO SIGNAL 82 ViewSonic Corporation Confidential Do Not Copy VX922 1...

Page 86: ...6 Digital input always shows NO SIGNAL 83 ViewSonic Corporation Confidential Do Not Copy VX922 1...

Page 87: ...06 CB 00002602 DDL7VDPC005 VGA cable 29 VGA cable Updated vendor Part on 10 10 06 CB 00008044 DD0L7WPC001 30 Cable MB OD B CB 00002522 DD0L9V0B000 Cable MB OD B 31 Documentation CD QSG VX922 HSD L9VD...

Page 88: ...40 N A FCL9ZA01019 MYLAR L9ZA FCL9ZA01 REV3A GP 2 41 N A FCL7C004011 PANEL MYLAR LEFT L7C FCL7C004 REV3A GP 2 42 N A GAL7TA02012 RUBBER 10 20 6 8 L7TA GAL7TA02 R3A GP 2 43 N A 25L9V0LC007 L9VDQ 4 LCD...

Page 89: ...86 ViewSonic Corporation Confidential Do Not Copy 8 Exploded Diagram and Spare Parts List VX922 1...

Page 90: ...006 REV3B GP 1 26 N A FAL9V003011 HINGE BKT L9VDQ 4 FAL9V003 REV3A GP 1 27 N A EAL9V008012 LCD COVER L9VDQ 4 EAL9V008 REV3A GP 1 28 M MS 0808 9411 FBL70008014 LOCK METAL L70B FBL70008 REV3A GP 1 29 M...

Page 91: ...D MONITOR 1 2 P FM 0602 0896 HBL9V001019 END CAP L 1 3 P FM 0602 0897 HBL9V002015 END CAP R 1 4 DC 00003995 HGL9V019010 CD QSG 1 5 A PC 0106 0224 DM333181G97 Power cord 3P 1 8M 1 6 P 00003998 HFL9V008...

Page 92: ...9 Block Diagram 89 ViewSonic Corporation Confidential Do Not Copy VX922 1...

Page 93: ...90 ViewSonic Corporation Confidential Do Not Copy VX922 1...

Page 94: ...ROM 24LC16 SCALAR RTD2523 LCD PANEL 17 19 RSDS AND LVDS AC 90 264V BRIGHTNESS ANALOG RGB LCDPWR_ON3 3V DDC MICRO CONTROLLER MTV312 5 0V DVI AIC 1563 POWER INVERTER AND AUDIO BOARD 3 3V AUDIO_VOLUME 3...

Page 95: ...22 0 047u 6 D20 Z5 6 NC 1 3 L10 0 6 R49 100 6NC D27 Z5 6 NC 1 3 C26 22P 6 R34 100 6 C18 0 047u 6 C30 0 1U 6 NC D9 DAN217K NC 2 1 3 R31 100 6 D24 Z5 6 NC 1 3 R33 100 6 L9 0 6 D28 Z5 6 NC 1 3 R45 2K 6 N...

Page 96: ...95 96 84 98 113 110 112 127 25 24 21 22 23 20 19 18 17 16 78 79 80 81 82 85 86 87 88 89 90 106 107 91 51 52 53 55 59 60 61 62 63 64 65 66 67 68 73 74 75 76 77 104 93 102 103 101 100 94 99 92 36 34 10...

Page 97: ...R39 4 7K 6 R87 33K 6 R80 2K 6 R40 4 7K 6 R115 4 7K 6 R81 2K 6 R100 1K 6 R89 33K 6 R165 NC 100K 6 U8 24LC16 1 2 3 4 5 6 7 8 A0 A1 A2 VSS SI SCK WP VCC Q12 2N3906 2 1 3 R101 1K 6 R90 33K 6 C103 NC 1U 16...

Page 98: ...VCC C68 2200P 6 L22 FEB_1206 C70 100U 16V Q8 SI2301DS 3 1 2 C69 0 1U 6 R70 82K 6 C67 2200P 6 L21 NC R68 10K 6 Q9 DTC144EUA 2 3 1 R67 82K 6 C74 NC 100U 16V Q11 NC DTC144EUA 2 3 1 R75 NC 82K 6 C73 NC 0...

Page 99: ...96L NC 4 9 5 6 7 17 14 12 11 10 13 15 16 1 2 3 19 20 18 INL INR VAROUT_L VOLUME VAROUR_R OUTL OUTR MUTE STBY SVR GND VS VS GND GND GND GND GND GND C92 0 47U 8 NC C95 220P 6 NC R139 10K 6 NC R141 10K 6...

Page 100: ...276D126 2 3 4 5 6 7 8 9 R2 330 6 1 R1 200 6 1 U1 AIC1084 TO252 1 2 3 ADJ GND VOUT VIN 1 H1 MTH276D126 2 3 4 5 6 7 8 9 C2 0 1uF 6 C4 0 1uF 6 1 H3 MTH276D126 2 3 4 5 6 7 8 9 C1 10uF 8 C3 10uF 8 97 ViewS...

Page 101: ...1 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 18...

Page 102: ...MMST3906 3 2 1 C2 1u 6 R14 10K 6 NC EC1 10uF 16V R2 0 1206 U2 AIC1563 1 2 3 4 5 6 7 8 DC DE CF GND FB VCC IS BOOST C11 0 1U 6 R144 4 7K 6 Q3 MMST3906 Q4 SN7002E 3 2 1 C7 0 1u 6 C9 120p 6 EC4 330u 16V...

Page 103: ...Main Board Control Board 100 ViewSonic Corporation Confidential Do Not Copy 11 PCB Layout Diagrams VX922 1...

Page 104: ...low Chart 7 Recommended Spare Parts List 8 Exploded Diagram and Exploded Parts List 9 Block Diagrams 10 Schematic Diagrams 11 PCB Layout Diagrams B Are you satisfied with this Service Manual Item Exce...

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