ViewSonic VG511s Service Manual
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ViewSonic VG511s Service Manual

ViewSonic VG511s Service Manual

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Service Manual

ViewSonic
VG511s/VG512s
Model No. VLCDS27955-3W/4W
15" Color TFT LCD Display
(VG511s/VG512s_SM_742 Rev. 1a Apr. 2004)
ViewSonic 381 Brea Canyon Road, Walnut, California 91789 USA - (800) 888-8583

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Summary of Contents for ViewSonic VG511s

  • Page 1: Service Manual

    Service Manual ViewSonic VG511s/VG512s Model No. VLCDS27955-3W/4W 15” Color TFT LCD Display (VG511s/VG512s_SM_742 Rev. 1a Apr. 2004) 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

    4. Circuit Description 5. Adjusting Procedure 6. Trouble Shooting Flow Chart 7. Recommended Spare Parts List 8. Exploded Diagram And Spare Parts List 9. Block Diagram 10. Schematic Diagrams 11. PCB Layout Diagrams Confidential - Do Not Copy ViewSonic Corporation VG511s VG512s...

  • Page 4: Precautions And Safety Notices

    The openings should never be blocked by placing the product on a bed, sofa, rug, or other similar surface. 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. Confidential - Do Not Copy ViewSonic Corporation VG511s VG512s...

  • Page 5: Specification

    2.7 kgs. (LCD Module only) 3.4kgs. (unit) Accessory VGA cable, AC/DC adapter, power cord. Temperature Operation : 0 ~ 50°C Storage : -20 ~ 60°C Color temp (white) White x 0.313±0.03 , white y 0.329±0.03 Confidential - Do Not Copy ViewSonic Corporation VG511s VG512s...
  • Page 6 It is called 15 Pin Mini D-sub Connector. Signal Connector Pin NO. Red Video Signal Green Video Signal Blue Video Signal N.C. Ground Ground Ground Ground Ground N.C. DDC data Horizontal sync signal Vertical sync signal DDC clock Confidential - Do Not Copy ViewSonic Corporation VG511s VG512s...
  • Page 7 TMDS positive differential input, channel 0 Logic Ground Reserved 20 Reserved. No connection Reserved 21 Reserved. No connection Logic Ground RXC+ TMDS positive differential input, reference clock RXC- TMDS negative differential input, reference clock Confidential - Do Not Copy ViewSonic Corporation VG511s VG512s...

  • Page 8: Front Panel Function Control Description

    3. Front Panel Function Control Description 3.1 Location of Controls Confidential - Do Not Copy ViewSonic Corporation VG511s VG512s...
  • Page 9 [1] key at the same time and plug the AC cord. 14) AUTO COLOR: press three buttons [1] & [up] & [down], this function only use for 1024x768 60hz patten 42/of Chroma 2135 signal generator. NOTE: chroma Patten 42 Confidential - Do Not Copy ViewSonic Corporation VG511s VG512s...

  • Page 10: Circuit Description

    The MTV312MV64AJ micro-controller is an 8051 CPU core embedded device specially tailored to LCD monitor applications. It include an 8051 CPU core, 1024-byte SRAM, 14 built-in PWM DACs, VESA DDC interface, 4 channel 6bit A/D converter, a 64 K-byte internal program Flash-ROM . Confidential - Do Not Copy ViewSonic Corporation VG511s VG512s...

  • Page 11: Adjusting Procedure

    First, power off the monitor, un-plug the AC cord and be sure the signal cable is connected(D-sub connected) , then press “2” key at the same time and plug the AC cord to factory. Confidential - Do Not Copy ViewSonic Corporation VG511s VG512s...

  • Page 12: Trouble Shooting Flow Chart

    (3)H/V sync process to panel ,MCU 5V Check MCU (1)Check Scaler H/V sync correct? crystal (2)Measure at Scaler side Check Scaler Check MCU or Reprogram MCU (1)Scaler no power (2)Scaler changed no OSC Check Inverter Confidential - Do Not Copy ViewSonic Corporation VG511s VG512s...
  • Page 13 Panel power abnormal (1)Check OSD Picture information if mode over-scaler error (2)H/V sync input tolerance too big Scaler O/P CKT not assembled ok Picture distortion distorted Incorrect panel type or cable Confidential - Do Not Copy ViewSonic Corporation VG511s VG512s...
  • Page 14 Check 4 corner are shorted pin short or bend or not Be carefully when using Change socket Check if socket probe to measure pin bend If input over Not allowed MCU 5+0.25V MCU bad Confidential - Do Not Copy ViewSonic Corporation VG511s VG512s...
  • Page 15 Use 32 or 64 gray scale (1) VGA cable quality Noise at certain scale for (2) Power(3.3V/2.5V) more than one color have big noise TTL O/P short or open Confidential - Do Not Copy ViewSonic Corporation VG511s VG512s...
  • Page 16 5V ok ? 3.3V/2.5V ok ? Measure +12V to +12V->5V +5V short to regulator CKT no GND or 3.3V MCU 3.3V bad work 3.3V/2.5V short to GND PC 5V/DC 3.3V CKT not correct Confidential - Do Not Copy ViewSonic Corporation VG511s VG512s...

  • Page 17: Recommended Spare Parts List

    7. Recommended Spare Parts List VG511s RSPL VSA-M Item Location ViewSonic P/N Reference P/N Description Universal number# BASE PL-PS-0715-0978 GSTN-2916D8F--- BASE BASE FRONT COVER M-CV-0830-2500 GCOVD2552D8F--- BASE FRONT COVER BASE-BACK COVER M-CV-0830-2501 GCOVD2553D8F--- BASE-BACK COVER BASE METAL M-BK-0805-0032 LANGF2132D8---- BASE METAL...
  • Page 18 18 D-SUB METAL M-BK-0805-0034 LANGF2133D8---- D-SUB METAL 19 VESA GUM M-MS-0808-9117 PGUM-1124D8---- VESA GUM 20 VIEWSONIC TEXT LOGO M-MS-0808-9118 HBDGE1389D8---- VIEWSONIC TEXT LOGO 21 LOGO PLATE (BIRDS LOGO) M-MS-0808-9119 HBDGE1390D8---- LOGO PLATE (BIRDS LOGO) 22 BOSS FOR D-SUB AND DVI...
  • Page 19 CONNER PAPER CONNER PAPER (2 per pallet) #N/A ZTAPEY010G080-- TAPE TAPE W=100MM FOR EPS #N/A ZTAPEY030G045-- TAPE TAPE FOR CAB-A CORNER VG511s-1 LCD BOM Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty M-LCD-0826-0214 VVLM150XN05---- AU PANEL (15") AU PANEL (15")
  • Page 20 VG511s-1 BOM Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty 100mm*4(PANEL WITH MAIN METAL),50mm*1(I/F COVER WITH D-SUB #N/A ZTAPEL025S030-- TAPE METAL),50mm*1(PANEL-R GROUND),40mm*1(PANEL-L GROUND) #N/A PCUSS1264T8---- SPONGE 15mm*10mm*10mm #N/A PRDA-1270D8---- HEAT SINK FOR U1 HEAT SINK FOR U1 #N/A...
  • Page 21 VG511s-1 BOM Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty #N/A VRMDNVG--473J-A SMT 47KO ±5% 1/16W R133 R134 R151 R91 #N/A VRMDNVG--681J-A SMT 680KO ±5% 1/16W #N/A VRMDNVG--750J-A SMT 75O ±5% 1/16W R75 R78 R82 #N/A VRMDNVG--821J-A SMT 820O ±5% 1/16W...
  • Page 22 MHNGM0046D8---- HINGE ASSEMBLY HINGE ASSEMBLY M-MS-0808-9115 HDECP1987D8F--- LENS LENS M-MS-0808-9117 PGUM-1124D8---- VESA GUM VESA GUM M-MS-0808-9118 HBDGE1389D8---- VIEWSONIC TEXT LOGO VIEWSONIC TEXT LOGO M-MS-0808-9119 HBDGE1390D8---- LOGO PLATE (BIRDS MARK) LOGO PLATE (BIRDS MARK) M-MS-0808-9120 SPAKA6557D8---- PACKING PACKING M-MS-0808-9122 GCABB1852D8F--- CAB-B...
  • Page 23 VG512s-1 BOM Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty 100mm*4(PANEL WITH MAIN #N/A ZTAPEL025S030-- TAPE METAL),50mm*1(I/F COVER WITH D- #N/A PCUSS1264T8---- SPONGE 15mm*10mm*10mm #N/A PRDA-1270D8---- HEAT SINK FOR U1 HEAT SINK FOR U1 #N/A RCORF3350D8---- FOR FFC CABLE (45 PIN)
  • Page 24 VG512s-1 BOM Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty #N/A VRMDNVG--681J-A SMT 680KO ±5% 1/16W #N/A VRMDNVG--750J-A SMT 75O ±5% 1/16W R75 R78 R82 #N/A VRMDNVG--821J-A SMT 820O ±5% 1/16W R46 R47 #N/A VRMDNVG--822J-A SMT 8.2KO ±5% 1/16W...

  • Page 25: Exploded Diagram And Spare Parts List

    8. Exploded Diagram And Spare Parts List Exploded Parts List VG511s-1 Item ViewSonic P/N Ref. P/N Location Q'ty M-MS-0808-9118 HBDGE1389D8---- VIEWSONIC TEXT LOGO M-MS-0808-9233 GCABA2331D8FT-A CAB-A E-SK-0412-0091 RSPKCL032D88FG- SPEAKER M-MS-0808-9115 HDECP1987D8F--- LENS PL-NB-0707-1072 JKNBP2358D8F--- KNOB M-BK-0805-0035 LANGF2130D8---- MAIN METAL B-SB-0221-0407...
  • Page 26 Confidential - Do Not Copy ViewSonic Corporation VG511s VG512s...

  • Page 27: Block Diagram

    24C21 TO PANEL MTV312 EEPROM 12MHz 24C16 INVERTER 3.3V/2.5V SWITCH MODE POWER SUPPLY FROM QCNWS0905-8028- A/D ADAPTOR QCNWS0906-8026A QCODS1695T8-- CON1 CON1 INVERTER SW BOARD CON2 RUNTP5475T8---B CON3 DPWBN5570T8---- 15” LCD PANEL Confidential - Do Not Copy ViewSonic Corporation VG511s VG512s...

  • Page 28: Schematic Diagrams

    10uF/16V 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF R132 BEAD(0603) BYPASS OCLK VAA4 VDPLL AVSS_MPLL LHSYNC LVSYNC VAA4 0805 10uF/16V 0.1uF Title VG511s/512s Size Document Number Custom Confidential - Do Not Copy ViewSonic Corporation VG511s VG512s Date: Friday, October 17, 2003 Sheet...
  • Page 29 VCC2.5 : 2.5V for CORE VAA1 : 3.3V for A/D VAA2 : 3.3V for PLL VAA3 : 3.3V for DVI VLCD : 3.3V/5V for PANEL Title VG511s/512s Confidential - Do Not Copy ViewSonic Corporation VG511s Size Document Number VG512s DC-DC Converter...
  • Page 30 5.6V 0/NC VCPU VCPU Let MCU more stable VCPU 10u/16V 24LC16/DIP EEPROM_DAT DIP/SMD EEPROM_CLK 共 Layout option for scaler DDC Title VG511s/512s Size Document Number Date: Friday, October 17, 2003 Sheet Confidential - Do Not Copy ViewSonic Corporation VG511s VG512s...
  • Page 31 0 OHM 2.2K VSYNC 220pF PC5V VGA_CON ST_DET1 CLK_DDC DDC_CLK DAT_DDC DDC_DAT VCC5V 5.6V 5.6V DDC_5V PC5V Title 24C21 10u/16V DAN202U VG511s/512s Size Document Number Date: Friday, October 17, 2003 Sheet Confidential - Do Not Copy ViewSonic Corporation VG511s VG512s...
  • Page 32 DAT4- DAT5+ DAT5- clk+ clk- DVI CON CLK+ CLK- VCC5V BAV99 BAV99 BAV99 BAV99 BAV99 BAV99 BAV99 BAV99 Title VG511s/512s Size Document Number DVI_D Input Date: Friday, October 17, 2003 Sheet Confidential - Do Not Copy ViewSonic Corporation VG511s VG512s...
  • Page 33 2K/NC C118 C101 R152 470uF/DIP 0.01uF GND_AUDIO GND_AUDIO GND_AUDIO GND_AUDIO 3.9V 3.9V GND_AUDIO 102(0603) GND_AUDIO 3.9V 3.9V Title VG511s/512s GND_AUDIO GND_AUDIO Size Document Number Audio Date: Friday, October 17, 2003 Sheet Confidential - Do Not Copy ViewSonic Corporation VG511s VG512s...
  • Page 34 C109 C110 C111 C112 PAO10 33PF 33PF 33PF 33PF PAO23 PAO22 PAO21 PAO20 HANNSTAR J1 PAO19 PAO18 Title VG511s/512sb Size Document Number Custom Panel Output Date: Friday, October 17, 2003 Sheet Confidential - Do Not Copy ViewSonic Corporation VG511s VG512s...

  • Page 35: Pcb Layout Diagrams

    11. PCB Layout Diagrams Main Board Confidential - Do Not Copy ViewSonic Corporation VG511s VG512s...
  • Page 36 Main Board Confidential - Do Not Copy ViewSonic Corporation VG511s VG512s...
  • Page 37 Control Board Confidential - Do Not Copy ViewSonic Corporation VG511s VG512s...
  • Page 38 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 VG511s, VG512s Service Manual? t i n e l l Precautions And Safety Notices 2.

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