ViewSonic VA930-1 VLCDS24020-1W Service Manual

19” color tft lcd display

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Service Manual

ViewSonic VA930-1
Model No. VLCDS24020-1W
19" Color TFT LCD Display
3.
LOCAT
N OF CONTROLS
(VA930-1_SM_584-Rev. 1.0-September 2002)
ViewSonic 381 Brea Canyon Road, Walnut, California 91789 USA - (800) 888-8583

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Summary of Contents for ViewSonic VA930-1 VLCDS24020-1W

  • Page 1: Service Manual

    Service Manual ViewSonic VA930-1 Model No. VLCDS24020-1W 19” Color TFT LCD Display LOCAT N OF CONTROLS (VA930-1_SM_584-Rev. 1.0-September 2002) 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

    TABLE OF CONTENTS PRECAUTIONS AND NOTICES................1 SPECIFICATIONS ....................2 LOCATION OF CONTROLS..................3 ADJUSTING PROCEDURE..................4 BLOCK DIAGRAM....................9 TROUBLE SHOOTING FLOW CHART..............11 SPARE PARTS LIST....................15 EXPLODED DIAGRAM AND SPARE PARTS LIST..........26 SCHEMATIC DIAGRAMS..................28 PCB LAYOUT DIAGRAM..................38 ViewSonic Corporation VA930-1 Confidential – Do Not Copy...
  • Page 4: Precautions And Notices

    Those openings should never be blocked by placing this 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. ViewSonic Corporation VA930-1 Confidential – Do Not Copy...
  • Page 5: Specifications

    439 mm(W) x 465mm(H) x 180mm(D) Weight 7.5 kg (unit) 15 Pin D-Sub. Input connector Power management Operating : 0 ° C ~ +40 ° C Storage : -20 ° C ~ +60 ° C Temperature ViewSonic Corporation VA930-1 Confidential – Do Not Copy...
  • Page 6: Location Of Controls

    LOCAT N OF CONTROLS LOCAT N OF CONTROLS ViewSonic Corporation VA930-1 Confidential – Do Not Copy...
  • Page 7: Adjusting Procedure

    7. The LED lights up with orange and change to green color during reset procedure. 8. OSD changes into a message for "Auto Image Adjust", it disappears after reset procedure. 9. After that the input video signal is showed on display. ViewSonic Corporation VA930-1 Confidential – Do Not Copy...
  • Page 8: Block Diagram

    (U9) Serial EEPROM (U15) 24C16 INVERTER MTV230P (U17) SWITCH MODE POWER SUPPLY 3.3V FROM A/D ADAPTOR SW BOARD DPWBN5418T8---- CON4 CON2 CON1 5CON CON3 19” LCD PANEL INVERTER RUNTP5392T8---- AUDIO BOARD DPWBN5417T8---- ViewSonic Corporation VA930-1 Confidential – Do Not Copy...
  • Page 9: Trouble Shooting Flow Chart

    Check I/F board RGB signal Vertical, Horizontal Check LCD panel error Out of sync One or more colored vertical lines Check LCD panel Even (or odd) vertical H,V syn line is dark error ViewSonic Corporation VA930-1 Confidential – Do Not Copy...
  • Page 10 POWER CKT START CHECK 5V,3.3VB, LCD_VCC & 3V3_MCU CHECK POWER CKT (12V,+5V & 3.3V CKT) POWER CKT ViewSonic Corporation VA930-1 Confidential – Do Not Copy...
  • Page 11 Check U3 O/P REPLACE U3 TO SD1210 CKT & VCLK00 SIGNAL CHECK I/P R,G & B Video, HSYNC(pin 30),Coast(pin 31) AND I2C BUS Signal CHECK MCU CKT(I2C BUS),D_SUB connector And U2(74LV14) ADC CKT ViewSonic Corporation VA930-1 Confidential – Do Not Copy...
  • Page 12 MCU CKT START CHECK MCU_I2C(pin 31;32),ROM I2C(pin 27;28),ASIC I2C(pin 25;26) AND OUTPUT SIGNAL CHECK U15 RESET(pin 19),12MHZ(Pin7,8),H_sync (pin 14)&V_sync(pin13) SIGNAL CHECK U15 F/W OR REPLACE MCU CKT ViewSonic Corporation VA930-1 Confidential – Do Not Copy...
  • Page 14 START CHECK U15 CHECK U8 FBLK(Pin42),OSD_B(Pin 43) FBLK(Pin23),OSD_B(Pin 22) ,OSD_G(Pin44) And OSD_R ,OSD_G(Pin21) And (Pin 1) SIGNAL OSD_R(Pin 20) CHECK U11 OSD_CLK(Pin6),U8 OSD_HS REPLACE U15 REPLACE U8 (Pin31),OSD_VS(Pin 32) SIGNAL OSD CKT ViewSonic Corporation VA930-1 Confidential – Do Not Copy...
  • Page 15 PLL1 CKT START CHECK U11 PIN 6 CLOCK AND PIN 8 HALF_CLOCK SIGNAL CHECK U11 FCLK1(Pin 1) REPLACE and 2 PLL1_H(Pin 2) SIGNAL CHECK U8 FCLK1(Pin 29),VCLK1(Pin 30) SIGNAL PLL1 CKT ViewSonic Corporation VA930-1 Confidential – Do Not Copy...
  • Page 16 PANEL POWER CKT START CHECK LCD_VCC,V+3.3V, +5.0V,+12V AND Audio 9.0V CHECK POWER CKT (+5V,+12V, 3.3V& Audio 9.0V CKT) PANEL POWER CKT ViewSonic Corporation VA930-1 Confidential – Do Not Copy...
  • Page 17: Speaker Connection

    AUDIO START CHECK OSD setting (Mute,Volume) Adjust OSD CHECK U23 (R117,118) O/P SIGNAL CHECK U22 CHECK SCL,SDA O/P SIGNAL SIGNAL Wire Replace U22 connection Speaker connection Replace U23 AUDIO CKT ViewSonic Corporation VA930-1 Confidential – Do Not Copy...
  • Page 18: Spare Parts List

    D-SUB METAL D-SUB METAL M-MS-0808-8263 LANGH0029D8---- HINGE SUPPORT HINGE SUPPORT M-MS-0808-8266 PGUM-1105D8---- VESA GUM VESA GUM VIEWSONIC TEXT H1NDA1259D8---- VIEWSONIC TEXT LOGO LOGO PLATE (BIRDS LOGO PLATE (BIRDS M-MS-0808-6478 HBDGA1724D8---- MARK) MARK) BASE*4 XBSSN40P08000-- 4¢ 8mm BASE*4 BASE SUPPORT*7 XBSSN40P08000-- 4¢...
  • Page 19 PANEL WIRE HOLDER LHLDW1145D8---- PANEL WIRE HOLDER PANEL WIRE QC0DS1576D8---- PANEL WIRE M-WR-0828-0651 QCNWS0906-8022- INVERTER WIRE INVERTER WIRE LOCATION VIEWSONIC P/N PARTS NO DESCRIPTION I/F BOARD QPWB-5419T8---C I/F BOARD VCLFHN1HG104Z-A C .1U Z 50V VCLFHN1HG104Z-A C .1U Z 50V VCLFHN1HG104Z-A C .1U Z 50V...
  • Page 20 C .1U Z 50V VCLFHN1HG104Z-A C .1U Z 50V VCEABN1CX107M-A E 100U M 16V C99 2nd SOURCE VCEABN1CX107MNA E 100U M 16V 2nd C100 VCEABN1CX226M-A E 22U M 16V C101 VCLFHN1HG104Z-A C .1U Z 50V ViewSonic Corporation VA930-1 Confidential – Do Not Copy...
  • Page 21 E 470U M 16V C146 2nd SOURCE VCEACU1CG477M-P E 470U M 16V 2nd C147 VCEABN1CX107M-A E 100U M 16V C147 2nd SOURCE VCEABN1CX107MNA E 100U M 16V 2nd C148 VCICHN1EG334Z-A C .33 Z 25V ViewSonic Corporation VA930-1 Confidential – Do Not Copy...
  • Page 22 VCNCP0906REJST- CONNECTOR 6PIN JP3 (POWER JACK) QJAKP1044T8---- POWER JACK JP4 (AUDIO CON) VCNCP0907REJST- CONNECTOR 7PIN RF1L-514778111- INDUCTOR 100UH L30 2nd SOURCE RCHOL1073T8101- INDUCTOR 100UH 2nd L30 2nd SOURCE RCHOL1090T8111- INDUCTOR 100UH 2nd ViewSonic Corporation VA930-1 Confidential – Do Not Copy...
  • Page 23 VST2N3906-----A TRANSISTOR VST2N3906-----A TRANSISTOR VST2N3904-----A TRANSISTOR VSTIRLMS1503--A TRANSISTOR VSTIRLMS1503--A TRANSISTOR Q7 2nd SOURCE VSTBSH107-----A TRANSISTOR 2nd Q7 2nd SOURCE VSISI3442DV---A TRANSISTOR 2nd VST2N3904-----A TRANSISTOR VST2N3904-----A TRANSISTOR VST2N3904-----A TRANSISTOR VST2N3904-----A TRANSISTOR VST2N3904-----A TRANSISTOR ViewSonic Corporation VA930-1 Confidential – Do Not Copy...
  • Page 24 SMT 150 J 1/16W VRMDNVG--202J-A SMT 2K J 1/16W VRMDNVG--202J-A SMT 2K J 1/16W VRMDNVG--151J-A SMT 150 J 1/16W VRMDNVG--220J-A SMT 22 J 1/16W VRMDNVG--151J-A SMT 150 J 1/16W VRMDNVG--103J-A SMT 10K J 1/16W ViewSonic Corporation VA930-1 Confidential – Do Not Copy...
  • Page 25 SMT 24K J 1/16W VRMDNVG--472J-A SMT 4.7K J 1/16W VRMDNVG--472J-A SMT 4.7K J 1/16W VRMDNVG--104J-A SMT 100K J 1/16W VRMDNVG--103J-A SMT 10K J 1/16W VRMDNVG--103J-A SMT 10K J 1/16W VRMDNVG--103J-A SMT 10K J 1/16W ViewSonic Corporation VA930-1 Confidential – Do Not Copy...
  • Page 26 E 470U M 16V E-C-0404-1069 C171 VCSFDU1HY104Z-P C 0.1U Z 50V E-C-0404-3994 C172 VCEACU1HH225M-P E 2.2U M 50V C173 VCLFHN1HG104Z-A SMT.1U Z 50V C174 VCLFHN1HG104Z-A SMT.1U Z 50V C175 VCLFHN1EG224Z-A SMT .22U Z 25V ViewSonic Corporation VA930-1 Confidential – Do Not Copy...
  • Page 27 VRMPTV6--242J-U M 2.4K J 1/6W R114 VRMPTV6--242J-U M 2.4K J 1/6W E-R-0405-1290 R115 VRMPTV6--102J-U M 1K J 1/6W E-R-0405-1290 R116 VRMPTV6--102J-U M 1K J 1/6W E-R-0405-7020 R117 VRMPTV6--472J-U M 4.7K J 1/6W ViewSonic Corporation VA930-1 Confidential – Do Not Copy...
  • Page 28 VRMDNVG--103J-A SMT 10K J 1/16W E-R-0405-1250 R191 VRMPTV6--103J-U M 10K J 1/6W E-R-0405-1250 R192 VRMPTV6--103J-U M 10K J 1/6W LOCATION VIEWSONIC P/N PARTS NO DESCRIPTION CONTROL BOARD QPWB-5418T8--1- CONTROL BOARD C193 VCICHNlHHl0lJ-A SMT 100P J 50V C194 VCICHN1HH101J-A SMT 100P J 50V...
  • Page 29 EXPLODED DIAGRAM ViewSonic Corporation VA930-1 Confidential – Do Not Copy...
  • Page 30 MECHANICAL PARTS LIST NO VIEWSONIC P/N PART NO REMARK 1 C-FP-0301-0894 GCABA2104D8F--- 1 CAB-A CPWB-5419T8FUSA 1 FUJISTU PANEL (19") 3 M-MS-0808-8262 LANGF2068D8---- 1 MAIN METAL 4 M-MS-0808-8263 LANGH0029D8---- 1 HINGE SUPPORT 5 B-MB-0201-0697 DPWBN5419T8---A 1 M/B BOARD ASSY 6 B-SB-0221-0463...
  • Page 31: Schematic Diagrams

    VSYNC VGA_SCL VGA_SDA bead 2421 5V_STBY DPWBN5419T8---- MCU_ISP_SDA 5.6V 5.6V MCU_ISP_SCL BOARD ID: QPWB-5419T8---C VGA_CONN VGA_CON VIEWSONIC VA930 Title 1000P 5.6V Size Document Number 9883-140 Custom Date: Thursday, July 04, 2002 Sheet ViewSonic Corporation VA930-1 Confidential – Do Not Copy...
  • Page 32 B_INA1 DDC_SCL B_INA0 RP18 4.7K 33RP BEAD(0603) DDC_SDA DPWBN5419T8---- PKP_GND 4.7K BOARD ID: QPWB-5419T8---C BEAD(0603) 5.6V 5.6V PKA_GND ViewSonic VA930 Title Size Document Number SIL151 Custom Date: Thursday, July 04, 2002 Sheet ViewSonic Corporation VA930-1 Confidential – Do Not Copy...
  • Page 33 VCLK00 4.7K 4.7K 0.1u VCLK01 FBLK VSS SDA OSD_B OSD_G NC(47P) OSD_R 12MHZ ASIC_RESET DPWBN5419T8---- 3V3b 3V3SD BOARD ID: QPWB-5419T8---C BEAD(0805) ViewSonic VA930 100u/16v 0.1u 0.1u 0.1u 0.1u 0.1u 0.1u 0.1u 0.1u 0.1u 0.1u 0.1u 0.1u 0.1u 0.1u Title Size...
  • Page 34 HSYNC_IN MCU_H_IN VSYNC_D VSYNC_IN MCU_V_IN R54 22 ROM_SCL_EEPROM ROM_SCL ROM_SCL_ASIC DPWBN5419T8---- BOARD ID: QPWB-5419T8---C INPUT_SELECT High for Analog ViewSonic VA930 74LV4053 Title ASIC_RESET Size Document Number OSD & PLL1 Custom Date: Thursday, July 04, 2002 Sheet ViewSonic Corporation VA930-1 Confidential – Do Not Copy...
  • Page 35 C121 C122 SHTDN LVDS_PD 22U/16V 0.1u 0.01u 0.1u 0.01u CLKIN LCD_CLK LCD_DE DPWBN5419T8---- SN75LVDS83 BOARD ID: QPWB-5419T8---C ViewSonic VA930 Title Size Document Number LVDS INTERFACE Custom Date: Thursday, July 04, 2002 Sheet ViewSonic Corporation VA930-1 Confidential – Do Not Copy...
  • Page 36 3OE_ C135 ASIC_SDA 1N4148 0.1u 4.7K LED_GRN LED_AMBER 74LCX125 24LC16 AUDIO_MUTE POWER_ON_OFF VCLK00 VCLK01 DPWBN5419T8---- ViewSonic VA930 Title BOARD ID: QPWB-5419T8---C Size Document Number SMO230 Custom Date: Thursday, July 04, 2002 Sheet ViewSonic Corporation VA930-1 Confidential – Do Not Copy...
  • Page 37 MMBT3904L 0.1u 100u/16v PSC0 MMBT3904L PSC1 R101 MMBT3904L R102 R100 MMBT3904L AUDIO_EN R103 R104 DPWBN5419T8---- BOARD ID: QPWB-5419T8---C ViewSonic VA930 Title Size Document Number POWER Custom Date: Thursday, July 04, 2002 Sheet ViewSonic Corporation VA930-1 Confidential – Do Not Copy...
  • Page 38 CON6 C167 C168 CON7 POWER JACK4P 12V_INPUT AI-D34 AI-D34 AI-D34 AI-D34 AI-D34 DPWBN5419T8---- BOARD ID: QPWB-5419T8---C GND_INPUT ViewSonic VA930 Title Size Document Number I/O INTERFACE Custom Date: Thursday, July 04, 2002 Sheet ViewSonic Corporation VA930-1 Confidential – Do Not Copy...
  • Page 39 100U/16V 0.1U 2700P R119 C182 C184 5.6K 22U/16V 0.1U BEAD PC_Audio AV1_R AV1_L C189 C190 BEAD C191 C192 121A Title ViewSonic VA930 Size Document Number AUDIO Date: Thursday, July 04, 2002 Sheet ViewSonic Corporation VA930-1 Confidential – Do Not Copy...
  • Page 40 R123 R124 R125 R126 4.7K 2.2K C194 7.5K 4.7K C195 2.2K 7.5K 100pF 100pF VOLUME_DOWN DOWN MENU ENTER MUTE VOLUME_UP Title <Title> Size Document Number KEYPAD Date: Thursday, July 04, 2002 Sheet ViewSonic Corporation VA930-1 Confidential – Do Not Copy...
  • Page 41: Pcb Layout Diagram

    PCB LAYOUT DIAGRAM ViewSonic Corporation VA930-1 Confidential – Do Not Copy...

Table of Contents