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...
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.
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...
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...
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...
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...
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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...
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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...
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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...
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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...
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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...
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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...
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¢...
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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...
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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...
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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...
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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...
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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...
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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...
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EXPLODED DIAGRAM ViewSonic Corporation VA930-1 Confidential – Do Not Copy...
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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...