ViewSonic VX2025wm-1 User Manual Download

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ViewSonic VX2025wm-1

Model No. VS10859

20” Color TFT LCD

Display

(VX2025wm-1_SM Rev. 1b Sep. 2006)

ViewSonic 381 Brea Canyon Road, Walnut, California 91789 USA – (800) 888-8583

Service Manual

Summary of Contents for VX2025wm-1

Page 1: ...ViewSonic VX2025wm 1 Model No VS10859 20 Color TFT LCD Display VX2025wm 1_SM Rev 1b Sep 2006 ViewSonic 381 Brea Canyon Road Walnut California 91789 USA 800 888 8583 Service Manual ...

Page 2: ...pect to 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 from time to time in the contents hereof without obligation of ViewSonic to notify any person of such revision or changes Trademarks Optiquest is a registered trademark of ViewSonic Corporati...

Page 3: ...otices 1 2 Specification 4 3 Front Panel Function Control Description 9 4 Circuit Description 12 5 Adjustment Procedure 24 6 Troubleshooting Flow Chart 38 7 Recommended Spare Parts List 41 8 Exploded Diagram and Exploded Parts List 44 9 Block Diagram 48 10 Schematic Diagrams 49 11 PCB Layout Diagrams 56 ...

Page 4: ...CHECK 4 1 Plug the AC cord directly into the AC outlet Do not use an isolation transformer during this check 4 2 Connect a 1500 ohm 10 watt resistor paralleled by a 0 15uF capacitor between each metallic part and a good earth ground 4 3 Use an AC voltmeter with 1000 ohm volt or more sensitivity and measure the AC voltage across the combination 1500 ohm resistor and 0 15uF capacitor 4 4 Move the re...

Page 5: ...r on foreign objects That could scratch the surface of panel Surface of the panel is pressed by fingers this may cause MURA Do not touch the surface of the polarizer Take out the monitor with cushion correct method Place the monitor on a clean soft foam pad ViewSonic Corporation Confidential Do Not Copy VX2025wm 1 2 ...

Page 6: ...y bezel when assemble disassembly bezel when assemble disassembly bracket when assemble disassembly bracket when you get the lcd monitor when you get the lcd monitor ViewSonic Corporation Confidential Do Not Copy VX2025wm 1 3 ...

Page 7: ...ignals 1 Video RGB Analog Separate Composite and Sync on Green 2 TMDS Digital Video Impedance 75 Ohms Analog 100 Ohms Digital Maximum PC Video Signal 950 mV with no damage to monitor Maximum Mac Video Signal 1250 mV with no damage to monitor Sync Signals LVDS DDC 1 2B Compliant with Revision 1 3 Sync Compatibility Separate Sync Composite Sync SOG Video Compatibility Shall be compatible with all PC...

Page 8: ...1 5 times nominal line voltage for one cycle with no damage Power Supply Missing Cycle Immunity Shall be able to function properly without reset or visible screen artifacts when cycle of AC power is randomly missing at nominal input Power Supply Acoustics The power supply shall not produce audible noise that would be detectable by the user Audible shall define to be in compliance with ISO 7779 DIN...

Page 9: ...58 1kHz Yes Yes 20 1024 x 768 75Hz 60 0kHz Yes Yes 21 1024 x 768 85Hz 68 67kHz No No 22 1152 x 864 75Hz 67 5kHz Yes Yes 23 1152 x 870 75Hz 68 7kHz Yes Yes 24 1280 x 1024 60Hz 63 4kHz Yes Yes 25 1280 x 1024 75Hz 79 97kHz Yes Yes 26 1280x 720 60Hz 45kHz Yes Yes 27 1680 x 1050 60Hz 65 3kHz Yes Yes 28 1680 x 1050 75Hz 82 3kHz Yes No 29 1680 x 1050 85Hz 93 9kHz No No Primary Presets 1680x1050 60Hz AUDI...

Page 10: ...trast Max Brightness Max 300 cd m2 Typ after 30 minute warm up 240 cd m2 Min after 30 minute warm up Brightness Uniformity 80 Typ 75 Min Contrast Ratio 800 1 typ 400 1 min Color Depth 16 7 million colors 8 bits Viewing Angle Horizontal CR 10 Typical 176º Minimum 150º CR 5 Typical T B D Minimum T B D Viewing Angle Vertical CR 10 Typical 176º Minimum 150º CR 5 Typical T B D Minimum T B D Response Ti...

Page 11: ...Depth 16 7 million colors 8 bits Viewing Angle Horizontal CR 10 Typical 178º Minimum 150º CR 5 Typical T B D Minimum T B D Viewing Angle Vertical CR 10 Typical 178º Minimum 150º CR 5 Typical T B D Minimum T B D Response Time 10 90 Ta 25 C Tr 25 ms Tf 15 ms Total 40ms max Tr 11 ms Tf 5ms Total 16ms typ Without OD Board gray gray Average of Tr and Tf 8 ms typ Panel Defects Please see Panel Quality S...

Page 12: ...ViewSonic Corporation Confidential Do Not Copy VX2025wm 1 9 3 Front Panel Function Control Description ...

Page 13: ... and richer red Custom User Color Individual adjustments for red green and blue 1 To select color R G or B press button 2 2 To adjust selected color press or 3 When you are finished making all color adjustments press button 1 twice G Information displays the timing mode video signal input coming from the graphics card in your computer See your graphic card s user guide for instructions on changing...

Page 14: ...n display screen is displayed For example with a 15 second setting if a control is not pushed within 15 seconds the display OSD disappears I OSD Position allows you to move the on screen display menus and control screens J Memory Recall returns adjustments to the original factory settings if the display is operating in a factory Preset Timing Mode listed in this user guide ...

Page 15: ... the cabinet 1 3 OSD menu includes the following function Auto Image Adjust only active under analog input Contrast Brightness Input Select Audio Adjust Color Adjust Information Manual Image Adjust Setup Menu Memory Recall 1 4 Contrast and Brightness can be directly controlled with UP DOWN key 1 5 Audio volume can be controlled with UP DN key when Audio Adjust menu is active 2 CONNECTORS 2 1 AC in...

Page 16: ... connection 6 SCL DDC2B Clock 7 SDA DDC2B Data 8 VS Reserved No connection 9 RX1 TMDS negative differential input channel 1 10 RX1 TMDS positive differential input channel 1 11 GND Logic Ground 12 RX3 Reserved No connection 13 RX3 Reserved No connection 14 5V Power 15 GND Logic Ground 16 HP SENSE Pin Pull High 17 RX0 TMDS negative differential input channel 0 18 RX0 TMDS positive differential inpu...

Page 17: ...fault Brightness Default Ambient 20 5 C Input AC Warming up 30 min Display 1680 x 1050 3 2 POWER 3 2 1 Power supply Input voltage 100 240Vac Power frequency 50 60Hz 1 5Arms 90Vac Input current Inrush current 80A Max at 230Vac cold start Power consumption 47W typical 50Watts Max 3 2 2 Power Management State Power Indicator On 47Watts Green Standby 2Watts Amber Off 2Watts Off ...

Page 18: ...ID Analog EDID is stored in IC4 ______________________________________________________________________ EDID Block 0 Bytes 0 127 128 BYTES OF EDID CODE 0 1 2 3 4 5 6 7 8 9 ________________________________________ 0 00 FF FF FF FF FF FF 00 5A 63 10 1D E5 01 01 01 01 01 0F 01 03 20 0E 2B 1B 78 2E CF E5 A3 5A 49 30 A0 24 13 50 54 BF EF 80 B3 0F 40 81 80 81 40 71 4F 01 01 01 01 50 01 01 01 01 21 39 90 ...

Page 19: ...____ 2 20 24 Power Management and Supported Feature s Active Off Very Low Power Standard Default Color Space Preferred Timing Mode Display Type R G B Color 25 34 CHROMA INFO Red X 0 640 Green X 0 288 Blue X 0 144 White X 0 313 Red Y 0 352 Green Y 0 628 Blue Y 0 076 White Y 0 329 35 ESTABLISHED TIMING I 720 X 400 70Hz IBM VGA 640 X 480 60Hz IBM VGA 640 X 480 67Hz Apple Mac II 640 X 480 72Hz VESA 64...

Page 20: ...nc Pulse Width 176 pixels Border 0 pixels Frequency 65 29 KHz Vertical Active Time 1050 lines Blanking Time 39 lines Sync Offset 3 lines Sync Pulse Width 6 lines Border 0 lines Frequency 59 95 Hz Digital Separate Horizontal Polarity Vertical Polarity ______________________________________________________________________ 72 89 Detailed Timing Descriptor Block 2 Monitor Serial Number Q6Y050100001 __...

Page 21: ...0 01 01 01 01 21 39 90 30 62 1A 60 27 40 68 B0 36 00 B1 0F 11 00 70 00 1C 00 00 00 FF 00 51 36 59 80 30 35 30 31 30 30 30 30 31 0A 90 00 00 00 FD 00 32 4B 1E 52 11 100 00 0A 20 20 20 20 20 20 00 00 110 00 FC 00 56 58 32 30 32 35 77 120 0A 20 20 20 20 20 00 6A ______________________________________________________________________ 08 09 ID Manufacturer Name ________________ VSC 11 10 Product ID Code...

Page 22: ...hite Y 0 329 35 ESTABLISHED TIMING I 720 X 400 70Hz IBM VGA 640 X 480 60Hz IBM VGA 640 X 480 67Hz Apple Mac II 640 X 480 72Hz VESA 640 X 480 75Hz VESA 800 X 600 56Hz VESA 800 X 600 60Hz VESA 36 ESTABLISHED TIMING II 800 X 600 72Hz VESA 800 X 600 75Hz VESA 832 X 624 75Hz Apple Mac II 1024 X 768 60Hz VESA 1024 X 768 70Hz VESA 1024 X 768 75Hz VESA 1280 X 1024 75Hz VESA 37 Manufacturer s Reserved Timi...

Page 23: ...se Width 6 lines Border 0 lines Frequency 59 95 Hz Digital Separate Horizontal Polarity Vertical Polarity ______________________________________________________________________ 72 89 Detailed Timing Descriptor Block 2 Monitor Serial Number Q6Y050100001 ______________________________________________________________________ 90 107 Detailed Timing Descriptor Block 3 Monitor Range Limits Min Vertical ...

Page 24: ...bines a triple ADC a DVI compliant TMDS receiver a multi color on screen display OSD controller and many other functions in a single chip It provides user a simple flexible and cost effective solution for various flat panel display products The NT68563HF operates at frequencies up to 205MHz analog only suitable for LCD monitor up to UXGA resolution The NT68563HF also build in noise reduction funct...

Page 25: ...IO to control audio volume and back light brightness b Serial interface ports pin 25 26 DVI and pin 27 28 VGA This serial interface ports communicate with MCU and support up to 400Kbit per second transmit rate 6 1 2 Power Regulator AIC1563 U1 AIC1117 U3 U4 U5 The AIC1563 is a monolithic control IC containing the primary functions required for DC to DC converters The device consists of an internal ...

Page 26: ...c Input Current 2A Off state Input Power 0 1W INPUT On off control Voltage 2 5 25 for on 0 0 2 for off Rated Output Strike on Voltage 1500 2000Vrms Rated Output Voltage 710Vrms at 6mA Rated Output Frequency 40 50KHz OUTPUT Rated Output Current 6 7mA 6 4 This is a general purpose AC DC adapter which converter 90 240 Vac to a stabilized DC voltage 20V for inverter and 12V for system board with rated...

Page 27: ...Hz 31 5kHz No Yes 5 640 x 480 67Hz 35 0kHz Yes Yes 6 640 x 480 72Hz 37 9kHz Yes Yes 7 640 x 480 75Hz 37 5kHz Yes Yes 8 640 x 480 85Hz 43 27kHz No No 9 720 x 400 70Hz 31 5kHz Yes Yes 10 800 x 600 56Hz 35 1kHz Yes Yes 11 800 x 600 60Hz 37 9kHz Yes Yes 12 800 x 600 75Hz 46 9kHz Yes Yes 13 800 x 600 72Hz 48 1kHz Yes Yes 14 800 x 600 85Hz 53 7kHz No No 15 832 x 624 75Hz 49 7kHz Yes Yes 16 1024 x 768 60...

Page 28: ...ightness and contrast are set to 100 Pattern 2 3 RGB color performance RGB color Check the color temperature of RGB signal color Pattern 3 4 5 4 Sub pixel defect RGB color Check the sub pixel defect Pattern 3 4 5 5 Full white Full white Check the brightness and contrast ratio and check for bright pixel defects Pattern 6 6 Full black Full black Pattern 7 7 5 cycle pattern 5 cycle pattern Check the ...

Page 29: ...ViewSonic Corporation Confidential Do Not Copy VX2025wm 1 26 Pattern 5 Pattern6 Pattern 7 Pattern 8 Pattern 9 ...

Page 30: ...re When you received a received monitor please check whether the firmware version If not please following procedure to upgrade to the latest version 1 Equipment needed VX2025wm PC Personal computer LPT cable TWO FEMALE Fixture ISP Firmware upgrade program 2 Connection To Monitor To PC ...

Page 31: ...to install the software for ISP 0 To setup ISP environment Hardware PC or notebook parallel printer cable ISP tooling Software If OS was Win2000 or WinXP please install PORT95NT exe In order to ensure can execute ISP program please set BIOS in PC or Notebook as Fig 0 0 Fig 0 0 ...

Page 32: ...Confidential Do Not Copy VX2025wm 1 29 1 Install ISP 1 1 User could download ISP software EasyWirter 1 2 double click the file of EasyWriterV2 10p2 exe to install Fig 1 0 1 3 Press Next button to continue see Fig 1 1 Fig 1 1 ...

Page 33: ...tial Do Not Copy VX2025wm 1 30 1 4 Keep default setting or press Change button for selecting the path that you want and then press Next button to continue see Fig 1 2 Fig 1 2 1 5 Press Install button to continue see Fig 1 3 Fig 1 3 ...

Page 34: ...ViewSonic Corporation Confidential Do Not Copy VX2025wm 1 31 1 6 Press Next button to continue see Fig 1 4 Fig 1 4 1 7 Installation has finished press Finish button see Fig 1 5 Fig 1 5 ...

Page 35: ...ic Corporation Confidential Do Not Copy VX2025wm 1 32 Appendix B Use ISP to program MCU 2 1 press Load Hex button to load the hex file see fig2 1 Fig 2 1 2 2 Select item 4 4 NT68F633 64k IC see fig2 2 Fig 2 2 ...

Page 36: ...5wm 1 33 2 3 press Auto button to continue see fig2 3 Fig 2 3 2 4 Check the status is Auto Process Finished and show 100 in the bar see fig2 4 Fig 2 4 2 4 If show Can t enter ISP mode message please re check all ISP connection is ready see fig2 5 Fig 2 5 ...

Page 37: ...ock stand screw 4 unlade lcd cover with a fixture 5 tear off yellow tape and uninsert lcd cabel 10 unlock gnd plate and take out pcb holder 14 unlock pcb a screw and uninsert power cabel 11 take out pcb a 12 pull out cable from pcb a 13 ViewSonic Corporation Confidential Do Not Copy VX2025wm 1 34 ...

Page 38: ...ielding screw 6 pull out CCFT CABLE 7 unlock button b screw 8 tear off yellow tape and uninsert lcd cabel 15 tear off AL FOIL 16 unlock bezel screw 17 ViewSonic Corporation Confidential Do Not Copy VX2025wm 1 35 ...

Page 39: ...unlock bkt L R screw 18 pull out button b cable from button b connector 9 ViewSonic Corporation Confidential Do Not Copy VX2025wm 1 36 ...

Page 40: ...ssemble END CAP R L 4 put lcd in carton 5 put cable base manual assemble handle 6 accessories check cover carton 1 1 1 2 注意PANEL面朝向 BASE MANUAL POWER CABLE AUD VGA CABLE DVI CABLE HANDLE 美紋膠帶 ViewSonic Corporation Confidential Do Not Copy VX2025wm 1 37 ...

Page 41: ... Copy VX2025wm 1 38 6 Troubleshooting Flow Chart No Power No Power Check CN6 pin 1 2 12V correct Check U4 U3 pin2 3 3V correct Check U5 pin 2 1 8V correct Check Y1 frequency 12MHz Change M B Change Y1 Change U5 Change U3 U4 Change power board ...

Page 42: ... CN6 pin 1 2 12V correct Check U6 pin 6 Volume and Q7 Check U6 pin12 mute p11 stby Change M B Check input source or change J1 Change speaker Change power board module Change Q7 Change U6 NO OK NO NO NO NO OK OK OK OK OK ViewSonic Corporation Confidential Do Not Copy VX2025wm 1 39 ...

Page 43: ...mal Check panel cable Check open short of IC2 Check panel power supply of Q4 Check panel Change M B Change panel cable Repair open short Change Q4 Change panel OK OK OK OK NO NO NO NO ViewSonic Corporation Confidential Do Not Copy VX2025wm 1 40 ...

Page 44: ... M SCW 0824 0813 MF30060BBJ6 PCBAs to metal shielding 27 Nut MBLI1004018 IO LI1 MBLI1004 REV3A M MS 0808 8986 MBLI1004018 DVI D SUB to shielding 28 Rubber Plug M MS 0808 9815 GAL9V002014 rubber plug vesa 29 LCD Film Rev 3A M 00004158 JXW0ZB01019 LCD panel 30 Update Vendor P 00005217 HFW0VX03014 31 Part 09 07 06 HFW0VX01011 carton 32 Foam End Cap Left P 00005218 HBW0VX01018 cushion 33 Foam End Cap ...

Page 45: ...018 IO NUT LI1 MBLI1004 REV3A GP 4 42 N A FBL5T009018 AL FOIL 40 47 L5TD FBL5T009 REV3A GP 2 43 N A MM30030IBJ4 SCREW M3 3 I NI GP 4 44 N A FCL7G001016 AL FOIL L7G FCL7G001 REV3A HAN GP 2 45 N A 25W0VXLC006 W0VX LCD COVER ASSY 1 46 C 00005209 35W0VXLS008 W0VX LCD COVER SUB ASSY GP 1 47 N A 26W0VXSA007 W0VX STAND ASSY GP 1 48 C 00006705 37W0VXSU001 W0VX STAND SUB ASSY GP 1 49 N A 27W0VXCS013 W0VX A...

Page 46: ...04814 HCL7V022011 CARTON STICKER L7VC HCL7V022 REV3A GP 1 91 M 00003446 HCL7V023018 WARRANTY STICKER L7VC HCL7V023 R3A GP 1 92 DC 00003443 HCL7V024014 ADDRESS LABEL L7VC HCL7V024 REV3B 1 93 A PC 0106 0306 DM333181S01 POWER 3P 1 8M CHN Y546B300012180QD GP 1 94 A PC 0106 0224 DM333181G97 POWER CORD 3P 1 8M USA V04VS350012180 GP 1 95 A PC 0106 0227 DM333181801 POWER CORD SP 023 IS 14 1 8M B EU GP 1 9...

Page 47: ...ViewSonic Corporation Confidential Do Not Copy VX2025wm 1 44 8 Exploded Diagram and Exploded Parts List ...

Page 48: ... MBLI1004 REV3A GP 4 26 CB 00004151 DD0W0EIV008 CABLE MB INV 7P 8P 320MM W0E GP 1 27 N A FBL5T009018 AL FOIL 40 47 L5TD FB5T009 REV3A GP 2 28 N A FAW0VX01017 PCB SHIELDING W0VX FAW0VX01 REV3A GP 1 29 M MS 0808 9248 FCL7A001014 AL FOIL L7A FCL7A001 REV3A GP 4 30 N A FCL7G001016 AL FOIL L7G FCL7G001 REV3A HAN GP 2 31 M MS 0808 9411 FBL70008014 LOCK METAL L70B FBL70008 REV3A GP 1 32 M SCW 0824 6895 M...

Page 49: ...ViewSonic Corporation Confidential Do Not Copy VX2025wm 1 46 ...

Page 50: ...6 N A HCW0VX02015 ID LABEL W0VX A 1 7 M LB 0813 1042 HCL7V019011 CARTON LABEL L7VC 1 8 M LB 0813 0747 HCL7V004013 CORE LABEL 1 9 DC 00005212 HGW0VX03015 CD QSG W0VX A 1 10 N A HDW0VA03013 B 20 W SERV PAPER 1 11 P 00005217 HFW0VX03014 CARTON W0VX A 1 12 N A HFW0VX02018 SPACE PLATE W0VX 0 063 13 PL 00005198 JXLM5003011 HANDLE LM5S 1 14 CB 00003440 DD0L0TTH108 CABLE ASSY 1 15 N A DDW9ZA9A009 CABLE AU...

Page 51: ... X TAL 12MHz SI9435 TDA7496L STEP DOWN CONVERTER 3 3V CVDD1V8 1 8V MCU VDD 3 3V 5V 12V 12V PHONE JACK MUTE STANDBY VOLUME 5V LCD_VDD 3 3V 1 8V Key Pad BL ON BL BRIGHT SDA CSL VGA SDA VGA SCL DVI SDA DVI SCL VGA SDA VGA SCL DVI SDA DVI SCL SDA CSL LCD ON RSTN REFCLKI MCU VDD 3 3V INVERTER HV MCU VDD 3 3V INVERTER BOARD AC 90 264V 20V ON OFF ADJ LDO LDO LDO LVDS ...

Page 52: ... NC C1 BEAD 30 6 L3 D2 BAV99 NC 1 3 2 22pF 6 NC C3 4 7K 6 R5 1K 6 R3 D3 ZD5V6 NC 1 2 D4 ZD5V6 NC 1 2 0 6 L2 100 6 R119 100 6 NC R121 BEAD 30 6 L1 D5 BAV99 NC 1 3 2 D1 BAV99 NC 1 3 2 0 6 L4 D SUB Female CN1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 G G C2 0 1uF 6 100 6 R120 BEAD 30 6 L5 75 6 R6 100 6 NC R122 0 6 L6 75 6 R1 4 7K 6 R2 2 2K 6 NC R108 R8 100 6 NC D6 ...

Page 53: ... NC 1 3 2 D13 ZD5V6 NC 1 2 1K 6 R16 10 6 R18 4 7K 6 R12 10 6 R17 10 6 R11 D14 BAV99 NC 1 3 2 D15 BAV99 NC 1 3 2 CN2 DVI I Female 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 31 32 C1 C2 C3 C4 C5 C6 TX2 TX2 TX2 4 Shld TX4 TX4 DDC CLK DDC DATA A VS TX1 TX1 TX1 3 Shld TX3 TX3 5V GND HP Detect TX0 TX0 TX0 5 Shld TX5 TX5 TXC Shld TXC TXC SHELL1 SHELL2 AR AG AB AHS AGND NC 10 6 R20 4 7...

Page 54: ...7 106 105 104 103 AGND RX2 RX2 AVCC RX1 RX1 AGND RX0 RX0 AGND RXC RXC AVCC REXT PVCC PGND ADC_GNDA ADC_VAA BVMID BIN1 BIN1 SOGI1 GIN1 GIN1 RIN1 RIN1 RVMID ADC_VAA ADC_GNDA BIN0 Y0 BIN0 Y1 SOGI0 Y2 GIN0 Y3 GIN0 Y4 RIN0 Y5 RIN0 Y6 ADC_GND Y7 VREF HSYNCI1 VSYNCI1 TOUTP HSYNCI0 GPO5 VSYNCI0 GPO4 DPLL_GND OSCO OSCI DPLL_VDD GPO10 PWM0 GPO9 PWM1 GPO8 GPO7 YUV_CLK CGND CVDD DVDD NC NC NC NC NC NC NC NC D...

Page 55: ... 25 2 29 30 31 34 35 1 36 37 18 19 38 39 40 32 33 PC2 SOGI PC1 PC0 RSTB VDD PD6 GND OSCO OSCI P30 RXD P31 TXD P34 T0 P35 T1 PB3 ADC3 INTE1 PB2 ADC2 INTE0 PB1 ADC1 PB0 ADC0 PA7 PWM9 PA6 PWM8 PA5 PWM7 PA4 PWM6 PA3 PWM5 PA2 PWM4 PA1 PWM3 PB7 SDA1 PB6 SCL1 PB5 SDA0 PB4 SCL0 PA0 PWM2 PD5 PD4 PD3 PD2 PD1 PD0 PC7 PC6 PE0 PE1 PC5 PC4 PC3 NC1 NC2 R112 1K 6 R47 2K 6 R117 10K 6 R53 4 7K 6 R43 100 6 R52 4 7K ...

Page 56: ...D_A R67 10K 6 NC C46 330uF 16V L11 BEAD 120 1206 NC C45 2200pF 6 R69 0 6 NC L10 BEAD 120 1206 NC C44 2200pF 6 CN4 1841 30P 1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 R73 4 7K 6 Q3 SI9435 2 3 4 5 7 6 8 1 C47 0 1uF 6 Q4 MMBT3904 3 2 1 C48 0 1uF 6 R72 2 2K 6 R68 10K 6 NC L12 BEAD 120...

Page 57: ...U5 AIC1084 TO252 1 2 3 ADJ GND VOUT VIN C52 0 1uF 6 R90 150 6 1 C83 10K 6 C65 330pF 6 NC D26 RB081L 20 2 1 C66 330uF 16V C61 330uF 16V NC R76 330K 6 R75 47 6 C62 100uF 25V NC C70 100uF 25V R89 330 6 1 C64 0 1uF 6 NC R87 200 6 1 R88 330 6 1 R84 1K 1 NC C71 100uF 25V C49 0 1uF 6 NC U3 LT1117 TO223 1 2 3 4 ADJ GND VOUT VIN 4 L21 BEAD 120 0805 R79 3K 6 1 C56 1uF 8 R81 560 6 NC D20 1SS355 D19 1SS355 U3...

Page 58: ... 47uF 6 U6 TDA7496L 4 9 5 6 7 17 14 12 11 10 13 15 16 1 2 3 19 20 18 INL INR VAROUT_L VOLUME VAROUR_R OUTL OUTR MUTE STBY SVR GND VS VS GND GND GND GND GND GND C76 330uF 16V R96 100 6 C73 0 1uF 6 L22 BEAD 1206 C82 330uF 16V R102 10K 6 Q8 DTC144EUA 2 3 1 R100 BEAD 120 0805 R91 1K 6 L27 BEAD 1206 CN7 4606 04 04P R 1 2 3 4 L24 BEAD 120 0805 1 2 R95 2K 6 R93 6K8 6 C79 220pF 6 Q7 MMBT3904 2 3 1 L26 BEA...

Page 59: ...ViewSonic Corporation Confidential Do Not Copy VX2025wm 1 56 11 PCB Layout Diagrams 11 1 ...

Page 60: ...ViewSonic Corporation Confidential Do Not Copy VX2025wm 1 57 11 2 ...

Page 61: ...ViewSonic Corporation Confidential Do Not Copy VX2025wm 1 58 11 3 ...

Page 62: ...low Chart 7 Recommended Spare Parts List 8 Exploded Diagram and Exploded Parts List 9 Block Diagrams 10 Schematic Diagrams 11 PCB Layout Diagrams B Are you satisfied with this Service Manual Item Excellent Good Fair Bad 1 Service Manual Content 2 Service Manual Layout 3 The form and listing C Do you have any other opinions or suggestions regarding this service manual Reader s basic dada Name Title...

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