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ViewSonic VX1933W Service Manual

23.6” wide color tft lcd display
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Service Manual

ViewSonic 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

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Summary of Contents for ViewSonic VX1933W

  • Page 1: Service Manual

    Service Manual ViewSonic 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...

  • Page 2: Revision History

    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.

  • Page 3: Table Of Contents

    7. Block Diagrams ........................ 40 8. Schematic Diagrams ......................50 9. PCB Layout Diagrams ...................... 56 10. Exploded Diagram And Spare Parts List................ 60 11. Recommended Spare Parts List ..................71 VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...

  • Page 4: Precautions And Safety Notices

    Keep wires away from high voltage, high temperature components and sharp edges. Keep wires in their original position so as to reduce interference. Adjustment of this product please refers to the user’ manual. VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...
  • Page 5 Handling and Placing Methods VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...
  • Page 6 VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...

  • Page 7: Specification

    Internal Power Adapter, 3-pin plug (CEE22) 7 POWER Voltage AC 100-240V (Universal); 50-60 Hz Consumption Typ/Max 45 W (typ.) / 55 W (Max) ECO Mode Optimize 37 W (typ.) Conserve 30 W (typ.) VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...
  • Page 8 2. In the Audio menu, Recall both of audio volume and mute to default without OSD message. * While OSD menu off, recall CR/ BT/ Audio volume and mute to default VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...
  • Page 9 16 RELIABILITY MTBF 100,000 Hr (Excluding Panel). 17 POWER SAVING "On" Blue Normal FUNCTION "Active Off" AMBER “Off” 0.5 W 18 LOGISTICS Container Load 480 sets 1008 sets Pallet Load 48 sets VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...
  • Page 10 LCD Display Contents Power Cable Audio Cable VGA Cable DVI Cable Quick Start Guide ( One page) ViewSonic Wizard CD-ROM 22 EU Packaging Carton -- One piece construction with double wall, 0.72 Information Plastic Handle -- PE-LD, Poly Foam –...
  • Page 11 Simplified Chinese, Traditional Chinese. Korean , Ukrainian English, French, German, Dutch, Finnish, Swedish, Italian, Spanish, Greek, Russian, Czech, Hungarian, ViewSonic Quick Start Guide Turkish, Polish, Romania. Bulgaria, Slovakia, Croatia, Serbia, Slovenian, Portuguese, Arabic, Japanese, Simplified Chinese, Traditional Chinese. Korean Screen Protector Mylar...

  • Page 12: General Specification

    480i / 480p @ 60Hz 576i / 576p @ 50Hz Video timing support (HDMI) 720p @ 50/60Hz 1080i / 1080p @ 50/60Hz Resolution Compatibility Refer to Segment 4-5 Exclusions Not compatible with interlaced video VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...

  • Page 13: Power Supply

    Consumption 45W(typ) BLUE 55W(max) Power Consumption ECO Mode Blue 37W (Optimize) 30 W (Conserve) Active off Amber <1 W <0.5W Recovery Time On Mode = N/A, Active Off < 3 sec VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...
  • Page 14 20 1024 x 768 72 Hz, 58.1 KHz 21 1024 x 768 75 Hz, 75 Hz, 60.2 KHz For MAC 22 1024 x 768 23 1152 x 864 75 Hz, 67.5 KHz VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...
  • Page 15 *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 85Hz mode might be worse than 75Hz. VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...
  • Page 16 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 VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...

  • Page 17: Front Panel Function Control Description

    *1 refer to the Brightness OSD in segment 4-5-3 *2 Under sRGB or DCR mode, this function is disable Under HDMI mode, toggle audio source between HDMI and jack plug (Keep pushing 5 sec) When switch to HDMI VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...
  • Page 18 (refer to segment 4-6-4) [1] + [ ] Power Lock (refer to segment 4-6-5) [2] + [ ] Toggle DDC/CI and DDC/2B (DDC/CI enable/disable) and show following message for 3 seconds, VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...
  • Page 19 1. Background = blanking 2. The message OSD position is at the center. 3. After auto tune, OSD shall be off 4. Only for analog mode 4. Only for analog mode Contrast/Brightness Contrast VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...
  • Page 20 2. If signal detected from target port, change to target port. 1. Show on existing input port by red 3. If no signal detected from target color port, keep existing input port. VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...
  • Page 21 Step 3: Show on Input Message OSD at the right-top corner of screen for 1 second. HDMI HDMI AV Step 1: Turn off OSD. Step 2: VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...
  • Page 22 Audible icon. status after DC/AC Off to On Color Adjust sRGB Change Color setting to sRGB 9300K Change Color setting to 9300K 7500K Change Color setting to 7500K 6500K VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...
  • Page 23 [Dn]: decrease the OSD value setting Blue 1. Adjust range = 0 to 100 2. Default = 100 3. Key button definition: [1]: Back to Color Adjust OSD [2]: Jump to Red OSD VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...
  • Page 24 [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 1. Adjust range = 0 to 100 VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...
  • Page 25 [Dn]: Decrease the OSD value Sharpness 1. Adjust range = 0 to 100 (0,25,50,75,100) 2. Default = 50 3. Key button definition: [1]: Back to Manual Image Adjust [Up]: Increase the OSD value setting VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...
  • Page 26 3. Default = Advanced Advanced Over Drive = Level 1 ( best quality with over drive ) Ultra Fast Over Drive = Level 2 VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...

  • Page 27: Aspect Ratio

    Set color space to RGB mode for PC timing mode Mode 1. This function toggles RGB and YUV Set color space to YUV mode for HD timing display mode. mode 2. Show on existing Display Mode VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...
  • Page 28 OSD adjust range = 0 to 100 2. Show on existing ECO Mode setting by red color 3. Key button definition: [1]: Back to previous OSD status [2]: Change to the selected Display VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...
  • Page 29 7. While ECO or DCR setting changed, the lamp current shall be updated to new setting immediately. 8. Do not lock Contrast or Brightness OSD for ECO function 9. Following is the lamp current chart, VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...
  • Page 30 Language Select OSD Simplified Chinese Set OSD language to Simplified Chinese and keep in Language Select OSD Traditional Chinese Set OSD language to Traditional Chinese and keep in Language Select OSD VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...
  • Page 31 [1]: Back to Setup Menu OSD [2]: Change to OSD H. Position [Up]: Increase the OSD value setting (move OSD up) [Dn]: Decrease the OSD value setting (move OSD down) [Up]+[Dn]: Recall to default value VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...
  • Page 32 HDMI Mode (both in AV&PC) 5. Key button definition: [1]: Back to previous OSD status [2]: Change to the selected sleep Disable Sleep mode. time setting [Up]: Rolling up the slider VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...
  • Page 33 4. Show the message OSD position is at the center for 3 seconds. 5. Clean FIFO timing mode buffer 6. Execute Auto Image Adjust Note: Memory Recall should not effect on Language, Power Lock Settings or Input Priority VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...
  • Page 34 *5 Status bar indicating OSD Lock or Unlock is in progress and when complete it will indicate “OSD Locked” or “OSD Unlocked” for 3 seconds as below, OSD Locked OSD Unlocked *6 When OSD appears on screen, the OSD Lock/Unlock short cut key will be disabled. VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...
  • Page 35 “Power Button Locked” or “Button Unlocked” for 3 seconds as below, Power Button Locked Power Button Unlocked *6 When OSD appears on screen, the OSD Lock/Unlock short cut key will be disabled VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...

  • Page 36: Out Of Range

    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. VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...
  • Page 37 OSD Time Out 15 Sec Brightness 100% OSD Background Color Temperature 6500K Volume Sharpness 100% Treble OSD H. Position Bass OSD V. Position Input Priority Auto Search 720x400/640x400 720x400 Resolution Notice Enabled VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...
  • Page 38 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. (Figure 3) Moniter Head VGA cable Power cord Base Figure 3 VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...
  • Page 39 Disassembly Procedure BASE STAND VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...
  • Page 40 BACKCOVER VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...
  • Page 41 PANEL BEZEL VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...
  • Page 42 KEYPAD CHASIS VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...
  • Page 43 POWER BOARD LVD CABLE SHORT KEYPAD-CABLE VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...
  • Page 44 IF BOARD VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...

  • Page 45: Circuit Description

    R822, R823 and R824. R822, R823 and R824 are output sampling resistor. When the sampling voltage more than 2.5V or less than 2.5V, current of FB IC802 will change, this can change the voltage from T801. VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...

  • Page 46: Inverter Circuit

    EMI solution, sRGB for video color space convert and post pattern for manufacture test. The display provided single/double pixel clock LVDS interface. VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...

  • Page 47: Vga Input

    LED indicator is blue. b. When in power-saving mode, U105 # 108 is pulled high and U102 # 1 is pulled down, so Q108 is conducted and the LED indicator is orange. VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...
  • Page 48 The Panel_Vcc, Backlight_En, CLK/DATA output to panel will follow the following sequency. T1 (ms) T2 (ms) T3 (ms) T4 (ms) T5 (ms) T6+T7 (ms) 0.5~10 0~50 0~50 4.4.3 AC Outlet Pin Assignment Symbol Description Live Neutral P801 VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...
  • Page 49 Negative LVDS differential data input.Channel O0(odd) RXO0+ Positive LVDS differential data input.Channel O0(odd) RXO1- Negative LVDS differential data input.Channel O1(odd) RXO1+ Positive LVDS differential data input.Channel O1(odd) RXO2- Negative LVDS differential data input.Channel O2(odd) VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...
  • Page 50 Red video input Red GND Green video input Green GND Serial data line (SDA) Blue video input Blue GND Hsync +5V(from PC) Vsync Cable Detect Not Connected Serial clock line (SCL) VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...
  • Page 51 If the voltage at LI1 is always below 1.15V, the controller will treat this as an open lamp condition after a certain delay. The burst dimming signal will be ignored and the Fault Timer will start ramping up. VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...
  • Page 52 Bypass VCC to GND with a ceramic capacitor. Low-Side MOSFET Gate Output. Connect BG to the gate of the low-side MOSFET. IC ground Open lamp voltage feedback input. The function of this pin is same as VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...

  • Page 53: Adjustment Procedure

    *1 refer to the Brightness OSD in segment 4-5-3 *2 Under sRGB or DCR mode, this function is disable. Under HDMI mode, toggle audio source between HDMI and (Keep pushing 5 sec) jack plug VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...
  • Page 54 3.1. Optical (Best) input timing = 640 x 480 @ 60Hz; Following timing modes also recommended, 800 x 600 @ 60 Hz 1024 X 768 @ 60 Hz 3.2. Pattern as below, VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...

  • Page 55: Osd Control

    [1] + [ ] again for 10 seconds *1 The OSD Lock message as below, Range = 0 to 10 *2 The OSD Locked message as below, VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...
  • Page 56 [1] + [ ] again for 10 seconds *1 The Locking Power Button message as below, Range = 0 to 10 *2 The Power Button Locked message as below, VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...
  • Page 57 OSD Time Out 15 Sec Brightness 100% OSD Background Color Temperature 6500K Volume Sharpness 100% Treble OSD H. Position Bass OSD V. Position Input Priority Auto Search 720x400/640x400 720x400 Resolution Notice Enabled VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...

  • Page 58: Function Description

    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 reset by power off, power unplug and others) VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...
  • Page 59 The background color will persist without power saving until HDMI input is re-connected or other input has been selected. The following OSD message will display for 3 seconds and then disappear. OSD Background = Non-transparent Image = Blanking VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...

  • Page 60: Osd Structure

    3. After auto tune, OSD shall be off 4. Only for analog mode Contrast/Brightness Contrast Jump to Contrast OSD directly 1. Adjust range = 0 to 100 2. Default = 70 VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...
  • Page 61 Step 3: Show on Input Message OSD at the 2. Key button definition: right-top corner of screen for 1 second. [1]: Back to previous OSD status [2]: Change to the selected input port VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...
  • Page 62 3. If no signal detected from target port, keep existing input port. 4. When HDMI input and color space is YUV, it will first detect HDMI AV Step 3: Show on Input Message OSD at the VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...
  • Page 63 1. Show on existing input port by red 5000K color Change Color setting to 5000K User Color 2. Default = 6500K Jump to Red OSD directly 3. Key button definition: [1]: Back to previous OSD status VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...
  • Page 64 2. Default = 100 3. Key button definition: [1]: Back to Color Adjust OSD [2]: Jump to Red OSD [Up]: Increase the OSD value setting [Dn]: decrease the OSD value setting VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...
  • Page 65 [Up]: Increase the OSD value [Up]: scroll up the slider setting (When push the button on the top [Dn]: Decrease the OSD value position, the slider shall go down to the bottom item VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...
  • Page 66 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]: Decrease the OSD value Sharpness VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...
  • Page 67 ( faster than level 1) [Dn]: Scroll down the slider (When push the button on the bottom position, the slider shall go up to the top item) 3. Default = Advanced VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...

  • Page 68: Full Screen

    2.When input signals are non-wide format. this function is enable. Display Mode RGB Mode Set color space to RGB for PC timing mode 1. This function toggles RGB and YUV VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...
  • Page 69 5. Default = RGB Mode(VGA&DVI) HDMI is auto detected by Info Frame : YPbPr -> YUV mode, Non-YPbPr -> RGB mode. 7. It will recall to default after AC/DC on/off or mode change VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...
  • Page 70 Optimize immediately. Following is the lamp current chart, conserve 8. Under SRGB mode, ECO Mode shall be disabled with gray color. And it should not be selected. VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...
  • Page 71 Finnish bottom position, the slider shall item Set OSD language to Finnish and go down to the top item) keep in Language Select OSD VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...
  • Page 72 [1]: Back to Setup Menu OSD [2]: Change to OSD V. Position [Up]: Increase the OSD value setting (move OSD right) [Dn]: Decrease the OSD value setting (move OSD left) [Up]+[Dn]: Recall to default value VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...
  • Page 73 [1]: Back to Setup Menu OSD [Up]: Increase the OSD value setting [Dn]: Decrease the OSD value setting [Up]+[Dn]: Recall to default value OSD Background Swap on and off the OSD Background = Non-transparent = Transparent VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...
  • Page 74 1. Background = 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 VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...
  • Page 75 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 with all OSD controls set to their default values. VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...
  • Page 76 5.7 Upload firmware to MCU via VGA Cable 5.7.1 Connect ISP board between monitor and PC as below configure LCD Monitor D-Sub ISP Board Insert to Print Port 25pin VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...
  • Page 77 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. (3).When the picture show “End”, ISP finished. VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...

  • Page 78: Troubleshooting Flow Chart

    If you find the vertical line or horizontal line lost on the screen, please change panel. If you find the speaker don’t working, please don’t plug in audio cable, unless change new speaker. VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...
  • Page 79 R805, R834, R807 about 2.3V Check pin4of IC802 Check R808,R806 voltage about300 V Check pin7 of IC802 Check FB801,D803 voltage is 16V Is there instantaneously Check IC802 pulse wave on pin8 VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...
  • Page 80 6.3 DC output voltage is unstable VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...

  • Page 81: Output Power Is Unstable

    6.4 Output power is unstable VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...
  • Page 82 CN501, CN502? Is there instantaneously pulse wave on pin14, pin11 of IC501 Is Ok IC501? U501 fail at the moment of restart? IC501 fail T501 fail Is T501 ok? Check feedback circuit VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...

  • Page 83: Black Screen And Backlight Turn On

    Check VCC Power Fail Check FB104 Check Check Reset FB102 FB103 Waveform Check C153 Check Crystal Check Waveform C157,C158,X101 Check CCFL Check Invert fail Enable pin102 of Check R103,R105,R106, U108fail and Q103 VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...

  • Page 84: White Screen

    White Screen Workmanship LVDS cable reinsert Change LVDS LVDS cable NG cable Check VLCD Check VLCD Panel Fail Is 5V singals Check panel Enable of Panel Enable Check CN104 Check Q101,Q104 and VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...

  • Page 85: Bad Screen

    6.8 Bad Screen Bad Screen Workmanship LVDS able Reinsert hange LVDS Cable Check crystal: check X101,C157 Pin116&pin117 C158 checkU108and SO/CS#/SCK/SI SDO/SCZ/SCKSDI /RSTN VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...

  • Page 86: Block Diagrams

    7. Block Diagram VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...

  • Page 87: Schematic Diagrams

    8. Schematic Diagrams POWER (DC TO DC) VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...
  • Page 88 VGA-INPUT VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...
  • Page 89 DVI-INPUT VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...
  • Page 90 HDMI-INPUT VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...
  • Page 91 SCALER VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...
  • Page 92 AUDIO VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...
  • Page 93 VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...
  • Page 94 POWER SUPPLY VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...
  • Page 95 INVERTER SUPPLY VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...

  • Page 96: Pcb Layout Diagrams

    9. PCB Layout Diagrams MAIN BOARD - SILKSCREEN TOP VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...
  • Page 97 MAIN BOARD - SILKCREEN BOTTOM VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...
  • Page 98 POWER BOARD - SILKSCREEN TOP VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...
  • Page 99 POWER BOARD - SILKSCREEN BOTTOM VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...
  • Page 100 KEYPAD FOR FUNCTION - SILKSCREEN TOP KEYPAD FOR POWER - SILKSCREEN TOP KEYPAD FOR POWER - SILKSCREEN BOTTOM KEYPAD FOR FUNCTION - SILKSCREEN BOTTOM VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...
  • Page 101 10. Exploded Diagram and Exploded Parts List VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY VX2433wm-CN...
  • Page 102 EXPLODED PARTS LIST ( VX2433wm-1/VX2433wm-CN) ViewSonic Model Number: VS12324 Rev: 1a ITEM ViewSonic P/N Ref.PN DESCREPTION Q'TY 714030024100R ASSY,FRONT,BEZEL,LP2447 C-00009284 B-00009290 792131500020R function-KEYPAD 501020230300R key cover,,LP2447 E-00009253 631102240160R PANEL236" W (CMO901) 509146306200R SCREW,P,CROSS,W/WAS,M3*6,Zn-Cc 792641300500R IF BOARD (W/DVI) B-00009424 792641400500R POWER BOARD...
  • Page 103 PACKING PART LIST ( VX2433wm/VX2433wm-CN ) ViewSonic Model Number: VS12324 Rev: 1a Item ViewSonic P/N Ref. P/N Description Q'ty CB-00008002 453030300120R AUDIO CABLE A-00008111 453070800150R POWER CABLE P-00009398 506060016710R CUSHION LEFT,LP2447 506431008200R FILM PROTECTION PE 714020018300R ASSY BASE VX2433wm P-00009399 506120010900R BAG,PLASTIC EPE+PE,L500xW670xT0.55mm,LP2447...

  • Page 104: Recommended Spare Parts List

    11. Recommended Spare Parts List RECOMMENDED SPARE PARTS LIST (VX2433wm-1/VX2433wm-CN) ViewSonic Model Number: VS12324 Serial No. Prefix: VX2433wm-1 - Serial No. Prefix: VX2433wm-CN - Rev: 1a Item Category Part Name Description ECR/ECN ViewSonic P/N Ref. P/N Ref. NO Compatibility Location...
  • Page 105 506039007200R CORNER PAPER 1200x50x50xT5mm LE1729 506039007600R CORNER PAPER,900x50x50xT5mm, 506038003500R CARDBOARD L1270xW1016xT4mm LE1939 506036005900R CARDBOARD,L1190*W950*T7 506431000300R FILM,PE 500mmx900M ROHS 506380002100R TAPE WRAPPING TYPE(VIEWSONIC) 50mmx75M L 506120100500R SEALED BAG ADHESIVE 330x230mm LE1918 713010005501R ASSY, PACK,AIR, 20&40STD, VX2433(LP2447) 506150006100R PALLET L1270*W1016*H130MM LE1939 506039007200R CORNER PAPER 1200x50x50xT5mm LE1729...
  • Page 106 Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty C-00009286 714020019100R ASSY,BASE,LP2447 501240214600R BASE,LP2447 503020006300R RUBBER FOOT L14.8*W9.6*T3.5mm ,LE19E3 501020230300R key cover,,LP2447 509216610510R SCREW,F,CROSS,M4*10,BLK-NL(NYLOK) 714086650000R ASSY,PANEL(A)W/SPK,LP2347-527(VX2433WM) 511150102610R FOIL,AL.,DOUBLE COND.,RIGHT,LE2239 511150102600R FOIL,AL.,DOUBLE COND.LEFT,LE2239 511150101800R FOIL,AL.,DOUBLE COND.,60x35xT0.07mm, LE2 506381000700R TAPE,ACE,45mmx30M(PC=10x45mm),LE1709 ROH 509146306200R SCREW,P,CROSS,W/WAS,M3*6,Zn-Cc 509000000700R BOLT,#4-40x11.8,Ni FOR D-SUB/DVI CONN.RO...
  • Page 107 Company: Add: Tel: Fax: E-mail: After completing this form, please return it to ViewSonic Quality Assurance in the USA at facsimile 1-909-839-7943. You may also e-mail any suggestions to the Director, Quality Systems & Processes (marc.maupin@viewsonic.com) VX2433wm-1 ViewSonic Corporation CONFIDENTIAL – DO NOT COPY...

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