Related Manuals for ViewSonic VG900b-1
Summary of Contents for ViewSonic VG900b-1
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Page 1: Service Manual
Service Manual ViewSonic VG900b-1 Model No. VLCDS24020-2W 19” Color TFT LCD Display (VG900b-1_SM_575-Rev. 1.0-October 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..........23 SCHEMATIC DIAGRAMS..................25 PCB LAYOUT DIAGRAM..................35 ViewSonic Corporation VG900b-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 VG900b-1 Confidential – Do Not Copy... -
Page 5: Specifications
439 mm(W) x 465mm(H) x 180mm(D) 7.5 kg (unit) Weight 15 Pin D-Sub. Input connector Power management Operating : 0 ° C ~ +40 ° C Temperature Storage : -20 ° C ~ +60 ° C ViewSonic Corporation VG900b-1 Confidential – Do Not Copy... -
Page 6: Location Of Controls
LOCATION OF CONTROLS LOCATION OF CONTROLS ViewSonic Corporation VG900b-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. The input video signal is shown on display. ViewSonic Corporation VG900b-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 VG900b-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 sync line is dark error ViewSonic Corporation VG900b-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 VG900b-1 Confidential – Do Not Copy...
- Page 11 REPLACE U3 Check U3 O/P 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 VG900b-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 VG900b-1 Confidential – Do Not Copy...
- Page 13 U8 PIN 14 ASIC_SDA CONTROL SIGNAL U8 PIN 16 12MHZ U8 PIN 19 RESET U8 PIN 28 VCLK00 U8 PIN 29 FCLK1 U8 PIN 30 VCLK1 CHECK MCU,ADC & H&V BUFFER CKT AND SD1210 CKT ViewSonic Corporation VG900b-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 VG900b-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 VG900b-1 Confidential – Do Not Copy...
- Page 16 PANEL POWER STAR CHECK LCD_VCC,V+3.3V, +5.0V,+12V AND AUDIO +9.0V CHECK POWER CKT(+3.3V, +5V,+12V AND AUDIO +9.0V PANEL POWER CKT ViewSonic Corporation VG900b-1 Confidential – Do Not Copy...
- Page 17 AUDIO CKT ViewSonic Corporation VG900b-1 Confidential – Do Not Copy...
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Page 18: Spare Parts List
SPARE PARTS LIST Name: DPWBN5417T8---- Item Product ViewSonic P/N Part No. Location (pcs) 102001 VSILA4635A----- 102002 VSIPJ7809CZ---- 102002A VSIPL7809B----- U24 2nd SOURCE 102002B VSIL7809CV----- U24 2nd SOURCE 102701 PRDA-1253D8---- HEAT SINK FOR U22 102702 XEASD30P08000-- SCREW 202001 QJAKS0005D8D--G AUDIO IN... - Page 19 D1,2,3 260029A VSDBAV99A-----A SECOND SOURCE 260030 VSTIRLMS1503--A Q6,7 260030A VSTBSH107-----A SECOND SOURCE 260030B VSISI3442DV---A SECOND SOURCE 260032 M-MS-0808-8003 QSOCI1642T844-- U15 (PLCC44 260032A QSOCI1645T844-- SECOND SOURCE 260032B QSOCI1660T844-- SECOND SOURCE 260033 VSZRLZ5.6B----A ZD1,2,3,4,5,10 ViewSonic Corporation VG900b-1 Confidential – Do Not Copy...
- Page 20 SECOND SOURCE 260124B VCLFHN1HG150J-A SECOND SOURCE 260130 VCEABN1CX106M-A C19 (10UF/16V) 260130A VCEABN1CX106MNA SECOND SOURCE 260131 VCEABN1CX226M-A C100,113,118 (22UF/16V) 260132 VCEABN1CX107M-A C22,28,70,75,99,141,143,147,149,(100UF/16V) 260132A VCEABN1CX107MNA SECOND SOURCE 260133 VCEABN1CX107M-A C151,155,156 (100UF/16V) 260133A VCEABN1CX107MNA SECOND SOURCE ViewSonic Corporation VG900b-1 Confidential – Do Not Copy...
- Page 21 VESA METAL 420712 M-MS-0808-8258 LANG-2050D8---- D-SUB METAL 420713 M-MS-0808-8263 LANGH0029D8---- HINGE SUPPORT 420714 M-MS-0808-8266 PGUM-1105D8---- VESA GUM 420715 M-LB-0813-0711 HINDA1259D8---- VIEWSONIC TEXT LOGO 420716 M-MS-0808-6478 HBDGA1724D8---- LOGO PLATE (BIRDS MARK) 420717 XEPSD30P12WS0-- SPEAKER*4 420718 XBJSD30P10000-- FOR CAB-A*2 420719 XEPSD30P12000-- CAB-A*1...
- Page 22 Name: CPWB-5419T8FUSA Item Product ViewSonic P/N Part No. Location (pcs) 421001 M-LCD-0826-0136 VVLFLC48SXC8V-- FUJISTU PANEL (19") 421002 B-MB-0201-0697 DPWBN5419T8---A M/B BOARD ASS'Y 421003 B-SB-0221-0463 RUNTP5523T8---- INVERTER BOARD 421701 M-MS-0808-8262 LANGF2068D8---- MAIN METAL 421702 M-MS-0808-8267 PSLDM6477D8---- M/B SHIELD 421703 M-MS-0808-8268 PSLDM6478D8---A...
- Page 23 EXPLODED DIAGRAM ViewSonic Corporation VG900b-1 Confidential – Do Not Copy...
- Page 24 MECHANICAL PARTS LIST VIEWSONIC P/N PART NO REMARK 1 C-FP-0301-0894 GCABA2104D8F--- CAB-A CPWB-5419T8FUSA FUJITSU PANEL(19") 3 M-MS-0808-8262 LANGF2068D8---- MAIN METAL 4 M-MS-0808-8263 LANGH0029D8---- HINGE SUPPORT 5 B-MB-0201-0697 DPWBN5419T8---A M/B BOARD ASS'Y 6 B-SB-0221-0463 RUNTP5523T8---- INVERTER BOARD 7 B-AC-0215-0034 DPWBN5417T8---- AUDIO BOARD ASS'Y...
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Page 25: 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 Title VIEWSONIC VG900b 1000P 5.6V Size Document Number Custom 9883-140 Date: Thursday, July 04, 2002 Sheet ViewSonic Corporation VG900b-1 Confidential – Do Not Copy... - Page 26 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 VG900b Title Size Document Number Custom SIL151 Date: Thursday, July 04, 2002 Sheet ViewSonic Corporation VG900b-1 Confidential – Do Not Copy...
- Page 27 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 VG900b 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 28 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 VG900b 74LV4053 Title ASIC_RESET Size Document Number Custom OSD & PLL1 Date: Thursday, July 04, 2002 Sheet ViewSonic Corporation VG900b-1 Confidential – Do Not Copy...
- Page 29 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 VG900b Title Size Document Number Custom LVDS INTERFACE Date: Thursday, July 04, 2002 Sheet ViewSonic Corporation VG900b-1 Confidential – Do Not Copy...
- Page 30 3OE_ C135 ASIC_SDA 1N4148 0.1u 4.7K LED_GRN LED_AMBER 74LCX125 24LC16 AUDIO_MUTE POWER_ON_OFF VCLK00 VCLK01 DPWBN5419T8---- ViewSonic VG900b Title BOARD ID: QPWB-5419T8---C Size Document Number Custom SMO230 Date: Thursday, July 04, 2002 Sheet ViewSonic Corporation VG900b-1 Confidential – Do Not Copy...
- Page 31 MMBT3904L 0.1u 100u/16v PSC0 MMBT3904L PSC1 R101 MMBT3904L R102 R100 MMBT3904L AUDIO_EN R103 R104 DPWBN5419T8---- BOARD ID: QPWB-5419T8---C ViewSonic VG900b Title Size Document Number Custom POWER Date: Thursday, July 04, 2002 Sheet ViewSonic Corporation VG900b-1 Confidential – Do Not Copy...
- Page 32 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 VG900b Title Size Document Number Custom I/O INTERFACE Date: Thursday, July 04, 2002 Sheet ViewSonic Corporation VG900b-1 Confidential – Do Not Copy...
- Page 33 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 VG900b Size Document Number AUDIO Date: Thursday, July 04, 2002 Sheet ViewSonic Corporation VG900b-1 Confidential – Do Not Copy...
- Page 34 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 VG900b-1 Confidential – Do Not Copy...
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Page 35: Pcb Layout Diagram
PCB LAYOUT DIAGRAM ViewSonic Corporation VG900b-1 Confidential – Do Not Copy...