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ViewSonic VA930-1 VLCDS24020-1W, Service Manual

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ViewSonic VA930-1 VLCDS24020-1W Service Manual Download Page 12

YES

NO

NO

YES

YES

OK

MCU CKT START

MCU  CKT

CHECK U15 RESET(pin
19),12MHZ(Pin7,8),H_sync       
(pin 14)&V_sync(pin13)         
      SIGNAL

CHECK MCU_I2C(pin
31;32),ROM I2C(pin
27;28),ASIC I2C(pin
25;26) AND OUTPUT       
    SIGNAL

END

CHECK U15 F/W

OR REPLACE 

ViewSonic Corporation 

9

Confidential – Do Not Copy

VA930-1

Summary of Contents for VA930-1 VLCDS24020-1W

Page 1: ...Manual ViewSonic VA930 1 VA930 1_SM_584 Rev 1 0 September 2002 ViewSonic 381 Brea Canyon Road Walnut California 91789 USA 800 888 8583 Model No VLCDS24020 1W 19 Color TFT LCD Display 3 LOCATION OF CO...

Page 2: ...the contents hereof and specifically disclaims any warranty of merchantability or fitness for any particular purpose Further ViewSonic reserves the right to revise this publication and to make changes...

Page 3: ...VA930 1 1 PRECAUTIONS AND NOTICES 1 2 SPECIFICATIONS 2 3 LOCATION OF CONTROLS 3 5 BLOCK DIAGRAM 9 6 TROUBLE SHOOTING FLOW CHART 11 7 SPARE PARTS LIST 15 8 EXPLODED DIAGRAM AND SPARE PARTS LIST 26 9 SC...

Page 4: ...eating Do not block ventilation slots and openings with objects or install the display in a place where ventilation may be hindered Do not install this display near a motor or transformer where strong...

Page 5: ...tal 85q Vertical 85q Response Time 25 ms typ Contrast Ratio 500 1 typ Brightness 250 cd m2 typ Active Display Area 376 mm horizontal x 301mm vertical AC DC adapter Input AC 100 264V 47 63 Hz Output 12...

Page 6: ...3 LOCATION OF CONTROLS 3 LOCATION OF CONTROLS ViewSonic Corporation 3 Confidential Do Not Copy VA930 1...

Page 7: ...key to turn the display on and then release the and power button 6 The unit is set into Reset mode OSD main window will be shown on the display you can see a red message for ALL RESET with a red frame...

Page 8: ...CALER SD1210 2 U8 DDC EPROM 24C21A U5 Serial EEPROM 24C16 U17 MPU U15 MTV230P Serial EEPROM 24C16 U9 JP2 TO INVERTER JP3 SWITCH MODE POWER SUPPLY 19 LCD PANEL SW BOARD DPWBN5418T8 INVERTER RUNTP5392T8...

Page 9: ...e full of colored vertical lines Check power LED Check display resolution Check inverter Check I F board JP1 Check LCD cable Check I F board JP4 Check LCD panel J1 J2 J3 Check I F board Check SW board...

Page 10: ...YES YES YES NO CHECK 5V 3 3VB LCD_VCC 3V3_MCU START POWER CKT 12V 5V 3 3V CKT POWER CKT CHECK POWER CKT END ViewSonic Corporation 7 Confidential Do Not Copy VA930 1...

Page 11: ...3 O P TO SD1210 CKT ADC CKT CHECK I P R G B Video HSYNC pin 30 Coast pin 31 AND I2C BUS Signal START CHECK MCU CKT I2C BUS D_SUB connector And U2 74LV14 ADC CKT REPLACE U3 VCLK00 ViewSonic Corporation...

Page 12: ...CKT CHECK U15 RESET pin 19 12MHZ Pin7 8 H_sync pin 14 V_sync pin13 SIGNAL CHECK MCU_I2C pin 31 32 ROM I2C pin 27 28 ASIC I2C pin 25 26 AND OUTPUT SIGNAL END CHECK U15 F W OR REPLACE ViewSonic Corporat...

Page 13: ......

Page 14: ...U8 OSD_HS Pin31 OSD_VS Pin 32 SIGNAL CHECK U15 FBLK Pin42 OSD_B Pin 43 OSD_G Pin44 And OSD_R Pin 1 SIGNAL START OSD CKT CHECK U8 FBLK Pin23 OSD_B Pin 22 OSD_G Pin21 And OSD_R Pin 20 REPLACE U15 REPLAC...

Page 15: ...KT CHECK U11 FCLK1 Pin 1 and 2 PLL1_H Pin 2 SIGNAL CHECK U11 PIN 6 CLOCK AND PIN 8 HALF_CLOCK SIGNAL START END CHECK U8 FCLK1 Pin 29 VCLK1 Pin 30 SIGNAL PLL1 CKT REPLACE U11 ViewSonic Corporation 12 C...

Page 16: ...ES YES NO YES START CHECK LCD_VCC V 3 3V 5 0V 12V AND Audio 9 0V END CHECK POWER CKT 5V 12V 3 3V Audio 9 0V CKT PANEL POWER CKT PANEL POWER CKT ViewSonic Corporation 13 Confidential Do Not Copy VA930...

Page 17: ...ECK OSD setting Mute Volume START CHECK U22 O P SIGNAL Adjust OSD CHECK U23 R117 118 O P SIGNAL CHECK SCL SDA SIGNAL Wire connection Replace U23 Replace U22 Speaker connection AUDIO CKT ViewSonic Corp...

Page 18: ...BIRDS MARK M MS 0808 6478 HBDGA1724D8 LOGO PLATE BIRDS MARK BASE 4 XBSSN40P08000 4 8mm BASE 4 BASE SUPPORT 7 XBSSN40P08000 4 8mm BASE SUPPORT 7 BASE FRONT COVER 4 XBPSN30P08000 3 8mm BASEFRONT SPEAKE...

Page 19: ...L 1250DS INVERTER MYLER INVERTER MYLAR P1SL 1250D8 A INVERTER MYLAR INVERTER SHIELD P1SL 1256D8 INVERTER SHIELD MYLER INVERTER SHIELD P1SL 1256D8 A INVERTER SHIELD MYLAR FOR LCD PANEL XBJSD30P10000 FO...

Page 20: ...Z 50V C49 VCICHN1HG102K A C 1000P K 50V C62 E C 0404 4885 VCICHN1HH330J A C 33 J 50V C63 E C 0404 4885 VCICHN1HH330J A C 33 J 50V C70 VCEABN1CX107M A E 100U M 16V C70 2nd SOURCE VCEABN1CX107MNA E 100U...

Page 21: ...OURCE VCLFHN1HG101K A C 100U J 50V 2nd C131 E C 0404 4885 VCICHN1HH330J A C 33 J 50V C132 VCLFHN1HG104Z A C 1U Z 50V C132 VCLFHN1HG104Z A C 1U Z 50V C133 VCLFHN1HG104Z A C 1U Z 50V C133 VCLFHN1HG104Z...

Page 22: ...VSDAN202UT106 A DIODE D6 E D 0403 0531 VSD1N4148 A DIODE D7 VSDSS22 A SCHOTTKY DIODE D7 2nd SOURCE VSDSS24 A SCHOTTKY DIODE 2nd D7 2nd SOURCE VSDSK22 A SCHOTTKY DIODE 2nd D7 2nd SOURCE VSDSK24 A SCHO...

Page 23: ...RCE QSOC11660T844 CONNECTOR 44PIN 2nd U16 VSI74LCX125MXFA IC 14PIN U17 E IC 0401 2584 VSI24C16 IC 8PIN U17 2nd SOURCE VSI24C16ADP01 IC 8PIN 2nd U17 2nd SOURCE VSI24C16BP3 IC 8PIN 2nd U17 2nd SOURCE VS...

Page 24: ...EAD CORE 1206 L31 VRMDNVG 000J A SMT 0 J 1 16W L33 RFIL 5187T8500A BEAD CORE 1206 L35 RFIL 5187T8500A BEAD CORE 1206 L36 RFIL 5187T8500A BEAD CORE 1206 L37 RFIL 5187T8500A BEAD CORE 1206 L38 RFIL 5187...

Page 25: ...16W R62 VRMDNVG 101J A SMT 100 J 1 16W R63 VRMDNVG 101J A SMT 100 J 1 16W R64 VRMDNVG 330J A SMT 33 J 1 16W R65 VRMDNVG 330J A SMT 33 J 1 16W R66 VRMDNVG 101J A SMT 100 J 1 16W R67 VRMDNVG 102J A SMT...

Page 26: ...WRB1618T8330M R 8PIN 33ohm RP23 RNWRB1618T8330M R 8PIN 33ohm RP24 RNWRB1618T8330M R 8PIN 33ohm RP25 RNWRB1618T8330M R 8PIN 33ohm RP26 RNWRB1618T8330M R 8PIN 33ohm RP27 RNWRB1618T8330M R 8PIN 33ohm RP2...

Page 27: ...94 2nd E D 0403 1831 VSZBX79C3V9B U ZENER DIODE 2ND J1 M WR 0828 0472 QJUM 1045D8075 JUMPER J10 M WR 0828 0471 QJUM 1045D8050 JUMPER J2 M WR 0828 0472 QJUM 1045D8075 JUMPER J3 M WR 0828 0472 QJUM 1045...

Page 28: ...828 0472 QJUM 1045D8075 JUMPER J5 M WR 0828 0472 QJUM 1045D8075 JUMPER J6 M WR 0828 0472 QJUM 1045D8075 JUMPER L53 RFIL 5232T8300A BEAD CORE L54 RFIL 5232T8300A BEAD CORE L55 RFIL 5232T8300A BEAD CORE...

Page 29: ...8 EXPLODED DIAGRAM ViewSonic Corporation 26 Confidential Do Not Copy VA930 1...

Page 30: ...6477D8 1 SHIELD 11 M MS 0808 8264 LANGN1714D8 1 VESA METAL 12 M CV 0830 2342 GCABB1769D8F 1 CAB B 13 C BC 0302 0436 GCOVD2442D8F 1 BACK COVER 14 M LB 0813 0710 HBDG 1278D8F 1 VE LOGO 15 M CV 0830 2335...

Page 31: ...GND GND GND R7 R6 R5 R4 R3 R2 R1 R0 G7 G6 G5 G4 G3 G2 G1 G0 B7 B6 B5 B4 B3 B2 B1 B0 DATACLK HSOUT VSOUT SOGOUT SDA SCL A0 D4 DAN202U 3 2 1 L7 0 1 2 C8 0 1u R21 100 RP2 33RP 1 2 3 4 5 6 7 8 C45 33P L11...

Page 32: ...C62 33p RP13 33RP 1 2 3 4 5 6 7 8 R30 10K RP14 33RP 1 2 3 4 5 6 7 8 R34 100 T22 R27 510 R36 100 T24 R25 0 C54 10u 16v C63 33p ZD6 5 6V 1 2 T25 C64 0 1u C66 22u 16v D5 DAN202U 3 2 1 C50 22u 16v T26 R3...

Page 33: ...125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 B_IN10 B_IN11 B_IN12 B_IN13 DATA_SEL B_IN14 B_IN15 B_IN1...

Page 34: ...C_IN VSYNC_IN ROM_SCL_EEPROM VCLK1 OSD_CLK FCLK1 5Va 5Vb 5Vb U10 F14_SINGLE 1 2 3 5 4 NC A GND VCC Y R53 4 7 U12 74LV4053 11 10 9 12 13 2 1 5 3 14 15 4 6 7 16 8 S1 S2 S3 1Y0 1Y1 2Y0 2Y1 3Y0 3Y1 1Z 2Z...

Page 35: ...GND D27 D0 D1 GND D2 D3 D4 L21BEAD 0805 L22 BEAD 0805 C116 0 1u J1 FI SE30P HF 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 VIN VIN VIN GND GND GND SELLVDS VcontIN...

Page 36: ...2 3 4 C133 0 1u C128 22P R62 100 R67 1K R151 4 7K C124 1u U15 SM0230 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 ROUT XIN...

Page 37: ...0 C152 0 1u L36 BEAD 1206 L33BEAD 1206 R87 NC L31 BEAD 0805 C145 0 1u Q9 MMBT3904L 1 2 3 L34 NC 1206 L35BEAD 1206 C155 100u 16v C143 100u 16v R112 680 T52 L32 NC 1206 R982K C148 0 1u R97 2K R96 10K R...

Page 38: ...ON OFF L46 BEAD 0805 L43 BEAD 0805 JP4 CON7 1 2 3 4 5 6 7 12V 12V SCL SDA AUDIO_MU GND HP_SENSE C163 0 1u AI4 AI D34 1 L44 BEAD 0805 L40 BEAD 0805 J2 DVI I connector 1 2 3 4 5 6 7 8 9 10 15 16 17 18...

Page 39: ...1U AUDIO_L 1 2 C180 1 0U 16V C179 1 0U 16V C190 10P C177 2 2U 25V U22 LA4635 6 8 2 7 4 5 3 1 9 10 11 12 P P OUT IN Vcc IN STBY GND DC GND OUT C192 10P R105 2 2 R113 10 L47 10UH C161 470 16V R110 5 6K...

Page 40: ...POWER 1 3 4 2 5 SW4 VOLUME_DOWN 1 3 4 2 5 SW2 UP 1 3 4 2 5 SW5 MENU 1 3 4 2 5 C195 100pF JP7 HEADER 8 1 2 3 4 5 6 7 8 L53 BEAD L54 BEAD SW3 DOWN 1 3 4 2 5 L55 BEAD L56 BEAD L57 BEAD R124 2 2K R120 4 7...

Page 41: ...10 PCB LAYOUT DIAGRAM ViewSonic Corporation 38 Confidential Do Not Copy VA930 1...

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