ViewSonic VG150m-1 Service Manual
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ViewSonic VG150m-1 Service Manual

ViewSonic VG150m-1 Service Manual

15” color tft lcd display
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Service Manual

ViewSonic VG150m-1
VG150mb-1
Model No.VLCDS23587-3W
VLCDS23587-4W
15" Color TFT LCD Display
( VG150m-1_SM_547-R ev.1 a –Dec 2 0 02 )
ViewSonic " 381 Brea Canyon Road, Walnut, California 91789 USA - (800) 888-8583

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Summary of Contents for ViewSonic VG150m-1

  • Page 1: Service Manual

    Service Manual ViewSonic VG150m-1 VG150mb-1 Model No.VLCDS23587-3W VLCDS23587-4W 15” Color TFT LCD Display ( VG150m-1_SM_547-R ev.1 a –Dec 2 0 02 ) 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

    6-2 Troubleshooting Flow Chart…………………...……………29 Chapter 7 Schematic Diagrams…………………………………………….33 Chapter 8 PCB Layout…………………………………………………………37 Chapter 9 Exploded Diagram and Mechanical Parts List…………………41 Chapter 10 Recommended Spare Parts List………………………………….43 Chapter 11 Complete Parts List……………………………………………...44 Appendix Reader's Response ViewSonic Corporation Confidential - Do Not Copy VG150m/mb...

  • Page 4: Chapter 1 Precautions And Notices

    This product should never be placed near or over a radiator or heat register. This product should not be placed in a built-in installation unless proper ventilation is provided. ViewSonic Corporation Confidential - Do Not Copy VG150m/mb...
  • Page 5 To assure continued FCC compliance the user must use a grounded power supply cord and the provided shielded video interface cable with bonded ferrite cores. Also, unauthorized changes or modifications to ViewSonic products will void the user s authority to operate this device. Thus ViewSonic will not be held responsible for the product and its safety.

  • Page 6: Chapter 2 Specification

    Depth side view panel w/o base: 49.0mm / 1.92” Monitor Weight: 3.3Kg / 7.3 lbs Package Dimensions Width: 480.0mm / 18.9“ Height: 425.0mm / 16.7” Depth: 110.0mm / 4.3” Gross: 5.1Kg (11.2 lbs) ViewSonic Corporation Confidential - Do Not Copy VG150m/mb...

  • Page 7: Factory Preset Timing

    VESA 800x600 48.07 72.18 VESA 800x600 46.87 75.00 MAC 832x624 37.86 72.80 VESA 1024x768 48.36 60.00 VESA 1024x768 56.47 70.06 VESA 1024x768 58.03 71.91 VESA 1024x768 60.02 75.02 MAC 1024x768 Composite 60.24 74.92 ViewSonic Corporation Confidential - Do Not Copy VG150m/mb...

  • Page 8: D-Sub Connector Pin Assignment

    Pin Description Red video input Green video input Blue video input Ground Ground R video ground G video ground B video ground Ground No Connection (SDA) Horizontal sync (Composite sync) Vertical sync (SCL) ViewSonic Corporation VG150m/mb Confidential - Do Not Copy...

  • Page 9: Chapter 3 Disassembly / Assembly Instructions

    3. Disassembly / Assembly Instructions ViewSonic Corporation Confidential - Do Not Copy VG150m/mb...

  • Page 10: Chapter 4 Electronic Circuit Description

    OSD Generator R, G, B offset SYNCMOS Dithering MCU port Gamma control SM5964 Output control U1 MRT MASCOT Volume control & Mute on/off Audio amp. VLCD DC/DC +12V Speaker Converter +3.3V Audio in ViewSonic Corporation Confidential - Do Not Copy VG150m/mb...

  • Page 11: Main Board I/O Connections

    KEY4 MUTE 4-3 Inverter Board I/O Connections HV out HV out HV out HV out NOTE: MANUFACTURER’S NAME MUST BE ON THE PRINTED SIDE FOR THE INVERTER BOARD TO BE FACING UP. ViewSonic Corporation Confidential - Do Not Copy VG150m/mb...

  • Page 12: Theory Of Circuit Operation

    90% in power saving mode. So we need to switch off the power that needn’t exist when the system enters to this mode. We use the P-channel MOSFET TRLML6402 (Q1) to control the on/off state of the panel’s power VLCD. See FIG1-1. FIG1-1 ViewSonic Corporation Confidential - Do Not Copy VG150m/mb...
  • Page 13 IIC protocol and does the correct procedure to generate the proper signals to the whole system. 24LC02 (U14) chip provide DDC1/2B with Analog Plug&Play, and the DDC data format is EDID v1.3. See FIG1-2. FIG1-2 ViewSonic Corporation Confidential - Do Not Copy VG150m/mb...

  • Page 14: Confidential - - Do Not Copy

    The build-in analog interface includes an 80MHz, 8-bit 3-channel ADC, pre-amplifier, and VGA, allowing seamless support to resolution from VGA to XGA. ADC function block diagram, see FIG3-1. FIG3-1 ADC Functional Block Diagram ViewSonic Corporation Confidential - Do Not Copy...
  • Page 15 (DNL). In addition, in order to prevent potential error occurred during coarse conversion, digital error correction technique is also used. ViewSonic Corporation Confidential - Do Not Copy...
  • Page 16 Clock Re-Generator Functional Block Diagram FIG3-3 Clock Re-Generator ViewSonic Corporation Confidential - Do Not Copy VG150m/mb...
  • Page 17 Horizontal Total & Vertical Total are calculated. Color calibration includes maximum color component detection, color read back from specified position and maximum color difference in 2 neighboring pixels. ViewSonic Corporation Confidential - Do Not Copy...
  • Page 18 This block is used to conditionally drop incoming data if the incoming resolution is greater than 1024x768 which is the physical resolution of the panel. A modified version of the Bresenham line-drawing algorithm is used to determine which incoming data not to discard. ViewSonic Corporation Confidential - Do Not Copy...
  • Page 19 Vertical Zoom Filter and Horizontal Zoom Filter Mascot V scaling engine uses an advanced scaling technology and provides high quality scaling of text images, graphic images and real-time video. Display Control FIG3-5 Display Control ViewSonic Corporation Confidential - Do Not Copy VG150m/mb...
  • Page 20 Use these 4-bit color indices to look-up the palette and select related 15bit RGB foreground and background color. Add a 3bit "0" to each R, G, and B channel then generate 24-bit RGB color for the OSD character. ViewSonic Corporation Confidential - Do Not Copy...
  • Page 21 The Dithering Block generates output RGB data for TFT panels that have fewer than 8 bits for R, G and B input. Mascot V uses a proprietary algorithm to generate smooth shade colors. Panel Interface Mascot V chip interfaces with all commonly used active matrix flat panel, e.g. 640x480, 800x600, and 1024x768 . ViewSonic Corporation Confidential - Do Not Copy VG150m/mb...
  • Page 22 FIG3-8 Mascot function block ViewSonic Corporation Confidential - Do Not Copy VG150m/mb...
  • Page 23 SM5964ihhk (blank chip) SM5964ihh – yyyk I: process identifier {C, L} hh: working clock in MHz {40}. yyy: production code {001,…,999} k: package type postfix {as below table} FIG4-1 SM5964 Pin Configuration ViewSonic Corporation Confidential - Do Not Copy VG150m/mb...
  • Page 24 ISP service program space configurable in N*512byte (N=0 to 8) size Bank mapping direct addressing mode for access on-chip RAM Five channel Specific PWM (SPWM) build-in Direct LED drive output at port 4 ViewSonic Corporation Confidential - Do Not Copy VG150m/mb...
  • Page 25 FIG4-2 MPU Control Block ViewSonic Corporation Confidential - Do Not Copy VG150m/mb...
  • Page 26 VG150m/mb use AN7512 for stereo system, AN7512 is a dual 2-W BTL (Balanced Transformer-Less) audio power amplifier IC. Speakers and microphone will stay on, while the rest of the monitor is in power saving. See FIG5-1. FIG5-1 Audio block diagram ViewSonic Corporation Confidential - Do Not Copy VG150m/mb...

  • Page 27: Chapter 5 Adjustment

    CHINESE TRADITIONAL CHINESE SIMPLIFIED MANUAL IMAGE ADJUST H SIZE H/V POSITION FINE TUNE SHARPNESS ON/OFF SETUP MENU RESOLUTION NOTICE ENABLE/DISABLE OSD POSITION H/V Adjustment Bar OSD TIME OUT 5S/15S/30S/60S BACKGROUND ON/OFF MEMORY RECALL ViewSonic Corporation Confidential - Do Not Copy VG150m/mb...
  • Page 28 Contrast, brightness, h size, h/v position, color temperature @ 6500K, OSD position, sharpness, OSD timeout, volume, and Resolution Notice. Note: Memory Recall should have no effect for Mute, Language, or User Color Settings. ViewSonic Corporation Confidential - Do Not Copy...

  • Page 29: Chapter 6 Troubleshooting Flow Chart

    Input Signal: VGA Card Sis 620 Resolution 1024X768 HSYNC 48.5 KHz VSYNC 60Hz CH1: INPUT HSYNC (PIN13 OF P8) CH2: INPUT VSYNC (PIN14 OF P8) CH1: VGA_HSYNC (PIN39 OF U1) CH2: VGA_VSYNC (PIN40 OF U1) ViewSonic Corporation Confidential - Do Not Copy VG150m/mb...
  • Page 30 CH1: DISP_HSYNC (PIN79 OF U1) CH2: DISP_VSYNC (PIN77 OF U1) CH1: DISP_DE (PIN76 OF U1) CH2: DISP_VSYNC (PIN77 OF U1) ViewSonic Corporation Confidential - Do Not Copy VG150m/mb...
  • Page 31 CH1: DISP_DE (PIN76 OF U1) CH2: DISP_HSYNC (PIN79 OF U1) CH1: BLU_OUTB_4 (PIN116 OF U1) CH2: HSCLK (PIN78 OF U1) ViewSonic Corporation Confidential - Do Not Copy VG150m/mb...

  • Page 32: Troubleshooting Flow Chart

    It means no audio 1. Check phone jack P7, make sure audio signal input? Does volume out? 2. Check VCC & STB (Stand-by) of 3. Is U7 output ok? 4. Are speakers ok? ViewSonic Corporation Confidential - Do Not Copy VG150m/mb...
  • Page 33 1. Check resistor arrays of U1 U1 output correct. outputs 2. Check power of voltage 3. Check U1 to P1 &P2 1. Is P1 & P2 connected well? 2. Is panel working well? ViewSonic Corporation Confidential - Do Not Copy VG150m/mb...
  • Page 34 The voltage is about + 4.9V 1. Check U5 output +5VX correct? 2. Check L17 frequency The voltage is about +4.9V VLCD correct? Check C57 & pin 8 of U6 Check U11 output 3.3VX correct? ViewSonic Corporation Confidential - Do Not Copy VG150m/mb...
  • Page 35 DDC R ROUBLE OF EADING Start Support DDC1/2B 1. Analog cable ok? 2. Check signal U14 (SDA, SCL) Analog DDC OK? 3. Check IIC protocol ViewSonic Corporation Confidential - Do Not Copy VG150m/mb...

  • Page 36: Chapter 7 Schematic Diagrams

    7. Schematics Diagrams ViewSonic Corporation ViewSonic Corporation Confidential - Do Not Copy VG150m/mb...
  • Page 37 ViewSonic Corporation ViewSonic Corporation Confidential - Do Not Copy VG150m/mb...
  • Page 38 ViewSonic Corporation ViewSonic Corporation Confidential - Do Not Copy VG150m/mb...
  • Page 39 ViewSonic Corporation ViewSonic Corporation Confidential - Do Not Copy VG150m/mb...

  • Page 40: Chapter 8 Pcb Layout

    8. PCB Layout ViewSonic Corporation Confidential - Do Not Copy VG150m/mb...
  • Page 41 ViewSonic Corporation Confidential - Do Not Copy VG150m/mb...
  • Page 42 ViewSonic Corporation Confidential - Do Not Copy VG150m/mb...
  • Page 43 ViewSonic Corporation Confidential - Do Not Copy VG150m/mb...
  • Page 44 ViewSonic Corporation Confidential - Do Not Copy VG150m/mb...

  • Page 45: Mechanical Parts List

    REAR COVER CAB. (G7397) (VG150M) 1701-0203-9010 C-BC-0302-0422 REAR COVER CAB.(MID.GRAY-89121) ( VG150MB) 1701-0203-9020 M-MS-0808-8065 REAR LOGO PLATE VIEWSONIC (PLASTIC) 1936-1000-0240 M-MS-0808-7668 REAR LOGO PLATE VIEWSONIC (G7397) VG150M 1936-1000-0270 M-MS-0808-8349 REAR LOGO PLATE (VG150MB WITHOUT SILVER COATIN) 1936-1000-0290 M-CV-0830-2365 HINGE COVER (VSC-BLACK-792) 1701-1901-1001 M-CV-0830-2366...

  • Page 46: Recommended Spare Parts List

    REAR COVER (ABS,MID.GRAY-89121) (VG150mb) 1701-0203-9020 C-FP-0301-0876 FRONT PANEL (ABS,MID.GRAY)(VG150mb) ASS'Y 1801-0110-5030 P-BX-0601-0692 CARTON VIEWSONIC VG150mb (SHARP) 1925-1200-3860 A-CD-VG150MB CD WIZARD + QSG VIEWSONIC VG150mb (SHARP) 1925-1300-3861 M-MS-0808-2852 TCO'95 BOOKLET 1925-1400-0010 B-MB-0201-0724 LCD MAIN BD ASS'Y VG150mb(ADI)(MRT) 3150-1112-0150 ViewSonic Corporation Confidential -...

  • Page 47: Chapter 11 Complete Parts List

    1925-1000-1050 PE BAG (180W*290L*0.04t)(PE-LD)(ACC.-1) 1925-1100-0280 PE BAG (450W*600L*0.04t)(PE-LD)(15") 1925-1100-0310 P-BX-0601-0691 CARTON VIEWSONIC VG150m (FOR SHARP) 1925-1200-3591 A-CD-VG150M CD WIZARD + QSG VIEWSONIC VG150m 1925-1300-3591 M-MS-0808-8063 HANDLE-A FOR CARTON (L1-150T) 1925-1700-0030 M-MS-0808-8064 HANDLE-B FOR CARTON (L1-150T) 1925-1700-0040 B/C LBL VIEWSONIC VG150m...
  • Page 48 MAC. SCREW-MHSW #4-40*5.0L,Ni 1720-7344-0520 M-SCW-0824-0366 TAP. SCREW-TB #3.0*10.0L,NI 1721-0003-1020 TAP. SCREW-TP M2.0*6.0L,NI 1721-1020-0620 M-MS-0808-4677 V.SONIC LOGO (AL. PLATE) 1936-1000-0100 M-MS-0808-7668 REAR LOGO PLATE VIEWSONIC (G7397) 1936-1000-0270 M-MS-0808-8067 INSULATOR-B (L1-150T) 1947-1200-0140 M-MS-0808-8068 INSULATOR-D (L1-150T) 1947-1200-0171 ACETATE CLOTH TAPE 60*125mm 1947-1200-0240 B-SB-0221-0474...
  • Page 49 B-MB-0201-0725 3150-1102-0150 LCD MAIN BD ASS'Y VG150m(ADI)(MRT) ITEM VIEWSONIC P/N DESCRIPTION REFERENCE LOCATION Q’TY NUMBER E-C-0404-4794 E/C GEN. 330UF 16V 105' 8*9mm F (SX TYPE) 0101-0331-1211 C110 E/C GEN. 220uF 16V 105' 8*9mm F (SX TYPE) 0101-0221-1211 E/C GEN. 220uF 16V 105' 8*9mm F (SX TYPE) 0101-0221-1211 E/C GEN.

  • Page 50: C/M Multi. 0.1Uf 25V Y5V 0603 C70

    ITEM VIEWSONIC P/N DESCRIPTION REFERENCE LOCATION Q’TY NUMBER E-C-0404-3712 C/M MULTI. 0.1UF 25V Y5V 0603 0111-3104-2536 C/M Multi. 33PF 50V NPO 0603 0111-3330-5106 C100 E-C-0404-3712 C/M MULTI. 0.1UF 25V Y5V 0603 0111-3104-2536 C101 E-C-0404-3712 C/M MULTI. 0.1UF 25V Y5V 0603...

  • Page 51: C/M Multi. 1.0Uf 10V Y5V 0603 0111-3105-1136 C84

    ITEM VIEWSONIC P/N DESCRIPTION REFERENCE LOCATION Q’TY NUMBER E-C-0404-3712 C/M MULTI. 0.1UF 25V Y5V 0603 0111-3104-2536 E-C-0404-3712 C/M MULTI. 0.1UF 25V Y5V 0603 0111-3104-2536 E-C-0404-3712 C/M MULTI. 0.1UF 25V Y5V 0603 0111-3104-2536 E-C-0404-3712 C/M MULTI. 0.1UF 25V Y5V 0603 0111-3104-2536 E-C-0404-3712 C/M MULTI.
  • Page 52 ITEM VIEWSONIC P/N DESCRIPTION REFERENCE LOCATION Q’TY NUMBER E-Q-0402-1577 MOSFET N-CH 2N7002E-T1 SMD (SOT-23) 0420-1002-4621 E-L-0407-1517 ARRAY BEAD 120ohm (FCA3216M4-121TO2) 0370-0010-0161 E-L-0407-1517 ARRAY BEAD 120ohm (FCA3216M4-121TO2) 0370-0010-0161 RP10 E-L-0407-1517 ARRAY BEAD 120ohm (FCA3216M4-121TO2) 0370-0010-0161 RP11 E-L-0407-1517 ARRAY BEAD 120ohm (FCA3216M4-121TO2)
  • Page 53 ITEM VIEWSONIC P/N DESCRIPTION REFERENCE LOCATION Q’TY NUMBER RES. CF 430ohm 1/10W J 0603 0130-4300-0055 E-R-0405-5794 RES. CF 0.0ohm 1/10W J 0603 0130-0000-0055 E-R-0405-5795 RES. CF 22ohm 1/10W J 0603 0130-2209-0055 E-L-0407-1215 CHIP BEAD CORE 60ohm MLB-160808-0060A-N2 0370-0000-4453 E-R-0405-5795 RES. CF 22ohm 1/10W J 0603 0130-2209-0055 RES.
  • Page 54 ITEM VIEWSONIC P/N DESCRIPTION REFERENCE LOCATION Q’TY NUMBER E-R-0405-6288 RES. CF 47ohm 1/10W J 0603 0130-4709-0055 E-R-0405-6287 RES. CF 4.7Kohm 1/10W J 0603 0130-4701-0055 E-IC-0401-2642 IC MASCOT V PQFP 160PIN 0430-5007-1976 E-IC-0401-2644 IC AIC1084-33CE SMD 3PIN TO-252 0430-6003-0069 E-IC-0401-1982 IC AT24C02N-10SC-2.7 SMD 8PIN...
  • Page 55 1925-1000-1050 PE BAG (180W*290L*0.04t)(PE-LD)(ACC.-1) 1925-1100-0280 PE BAG (450W*600L*0.04t)(PE-LD)(15") 1925-1100-0310 P-BX-0601-0692 CARTON VIEWSONIC VG150mb (SHARP) 1925-1200-3860 A-CD-VG150MB CD WIZARD + QSG VIEWSONIC VG150mb 1925-1300-3861 M-MS-0808-8063 HANDLE-A FOR CARTON (L1-150T) 1925-1700-0030 M-MS-0808-8064 HANDLE-B FOR CARTON (L1-150T) 1925-1700-0040 B/C LBL VIEWSONIC VG150mb 1936-1100-4281...
  • Page 56 1947-1900-0060 B-SB-0221-0473 15" LCD DISPLAY BD ASS'Y 3150-0182-0156 LCD MAIN BD ASS'Y VG150mb(ADI) 3150-1112-0150 B-SB-0221-0473 3150-0182-0156 15" LCD DISPLAY BD ASS'Y VG150m/mb ITEM VIEWSONIC P/N DESCRIPTION REFERENCE LOCATION Q’TY NUMBER M-MS-0808-8058 LED L-3WYGW 3 0440-5000-0030 LED1 PCB DISPLAY BD V0 159.0*18.0*1.6t...
  • Page 57 3150-1112-0150 LCD MAIN BD ASS'Y VG150mb(ADI)(MRT) ITEM VIEWSONIC P/N DESCRIPTION REFERENCE LOCATION Q’TY NUMBER E-C-0404-4794 E/C GEN. 330UF 16V 105' 8*9mm F (SX TYPE) 0101-0331-1211 C110 E/C GEN. 220uF 16V 105' 8*9mm F (SX TYPE) 0101-0221-1211 E/C GEN. 220uF 16V 105' 8*9mm F (SX TYPE) 0101-0221-1211 E/C GEN.
  • Page 58 ITEM VIEWSONIC P/N DESCRIPTION REFERENCE LOCATION Q’TY NUMBER E-C-0404-3712 C/M MULTI. 0.1UF 25V Y5V 0603 0111-3104-2536 C/M Multi. 33PF 50V NPO 0603 0111-3330-5106 C100 E-C-0404-3712 C/M MULTI. 0.1UF 25V Y5V 0603 0111-3104-2536 C101 E-C-0404-3712 C/M MULTI. 0.1UF 25V Y5V 0603...
  • Page 59 ITEM VIEWSONIC P/N DESCRIPTION REFERENCE LOCATION Q’TY NUMBER E-C-0404-3712 C/M MULTI. 0.1UF 25V Y5V 0603 0111-3104-2536 E-C-0404-3712 C/M MULTI. 0.1UF 25V Y5V 0603 0111-3104-2536 E-C-0404-3712 C/M MULTI. 0.1UF 25V Y5V 0603 0111-3104-2536 E-C-0404-3712 C/M MULTI. 0.1UF 25V Y5V 0603 0111-3104-2536 E-C-0404-3712 C/M MULTI.
  • Page 60 ITEM VIEWSONIC P/N DESCRIPTION REFERENCE LOCATION Q’TY NUMBER E-Q-0402-1577 MOSFET N-CH 2N7002E-T1 SMD (SOT-23) 0420-1002-4621 E-L-0407-1517 ARRAY BEAD 120ohm (FCA3216M4-121TO2) 0370-0010-0161 E-L-0407-1517 ARRAY BEAD 120ohm (FCA3216M4-121TO2) 0370-0010-0161 RP10 E-L-0407-1517 ARRAY BEAD 120ohm (FCA3216M4-121TO2) 0370-0010-0161 RP11 E-L-0407-1517 ARRAY BEAD 120ohm (FCA3216M4-121TO2)
  • Page 61 ITEM VIEWSONIC P/N DESCRIPTION REFERENCE LOCATION Q’TY NUMBER RES. CF 430ohm 1/10W J 0603 0130-4300-0055 E-R-0405-5794 RES. CF 0.0ohm 1/10W J 0603 0130-0000-0055 E-R-0405-5795 RES. CF 22ohm 1/10W J 0603 0130-2209-0055 E-L-0407-1215 CHIP BEAD CORE 60ohm MLB-160808-0060A-N2 0370-0000-4453 E-R-0405-5795 RES. CF 22ohm 1/10W J 0603 0130-2209-0055 RES.
  • Page 62 ITEM VIEWSONIC P/N DESCRIPTION REFERENCE LOCATION Q’TY NUMBER E-R-0405-6288 RES. CF 47ohm 1/10W J 0603 0130-4709-0055 E-R-0405-6287 RES. CF 4.7Kohm 1/10W J 0603 0130-4701-0055 E-IC-0401-2642 IC MASCOT V PQFP 160PIN 0430-5007-1976 E-IC-0401-2644 IC AIC1084-33CE SMD 3PIN TO-252 0430-6003-0069 E-IC-0401-1982 IC AT24C02N-10SC-2.7 SMD 8PIN...

  • Page 63: Chapter 9 Exploded Diagram And Mechanical Parts List

    *Reader’s Response* Dear Readers: Thank you in advance for your feedback on our Service Manual,which allows continuous improvement of our products. We would appreciate your completion of the Assessment Matrix below, for return to ViewSonic corporation Assessment A. What do you think about the content after reading...

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