ViewSonic N4251w-1M Service Manual Download Page 3

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TABLE OF CONTENTS

1. Precautions and Safety Notices

................................................................. 1

3. Front Panel Function Control Description

................................................ 8

4. Circuit Description

.......................................................................................19

5. Adjustment Procedure

................................................................................23

6. Trouble Shooting Flow Chart

.....................................................................51

7. Block Diagram

.............................................................................................55

8. Schematic Diagrams

....................................................................................56

9. PCB Layout Diagrams

.................................................................................82

10. Exploded Diagram And Exploded Parts List

...........................................90

11. Recommend Spare Parts List

...................................................................93

ViewSonic Corporation

Confidential - Do Not Copy

N4251w-1M

2. Specification

.................................................................................................3

Summary of Contents for N4251w-1M

Page 1: ...Service Manual ViewSonic N4251w 1M Model No VS11502 1M 42 LCD TV N4251w 1M_SM Rev 1b Jul 2007 ViewSonic 381 Brea Canyon Road Walnut California 91789 USA 800 888 8583...

Page 2: ...ranty 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 obli...

Page 3: ...uit Description 19 5 Adjustment Procedure 23 6 Trouble Shooting Flow Chart 51 7 Block Diagram 55 8 Schematic Diagrams 56 9 PCB Layout Diagrams 82 10 Exploded Diagram And Exploded Parts List 90 11 Reco...

Page 4: ...ing from input connector 3 Wipe off water drop immediately Long contact with water may cause discoloration or spots 4 When the panel surface is soiled wipe it with absorbent cotton or other soft cloth...

Page 5: ...ods Correct Methods Incorrect Methods Only touch the metal frame of the LCD panel or the front cover of the monitor Do not touch the surface of the polarizer Surface of the LCD panel is pressed by fin...

Page 6: ...and after user adjustment b No image drift or lose fine tune settings due to panel temperature change Panel Acceptance Spec Refer to the panel acceptance criteria specification Note Intermittent and...

Page 7: ...Audio Audio amp of this product shall be provided by ESMT with a Model Number of 8256A MTK MT8202 for N4251w M shall be used as sound processor In addition a pair of speakers shall be integrated withi...

Page 8: ...le noise during startup and normal operation Audible shall define to be in compliance with ISO 7779 DIN EN27779 1991 Power Switch noise shall be Excluded Efficiency 80 full load nominal line Leakage C...

Page 9: ...ct ratio Up Down Left Right Enter Up Down for OSD function select and Left Right for function adjust Enter Enter the function setting Menu On screen display OSD menu ON OFF CH and CH Change channel fo...

Page 10: ...anship shall be inspected according to ViewSonic Molded Plastic Parts Specification VSCMPPSPEC001V1 2 Screen Printed Parts Bird Logo Recess Artwork shall be provided and confirmed by ViewSonic Rear La...

Page 11: ...bol are trademarks of Dolby Laboratories Only for DTV source in this model ENTER To highlight a control in OSD menu CH Up Channel up when source is at TV or select a control while in OSD menu CH Down...

Page 12: ...the VGA output of your PC Composite Video input Connect this port to the composite video output of A V device YPbPr signal input Connect this port to the YPbPr output of A V device S Video input Conne...

Page 13: ...Remote Control ViewSonic Corporation Confidential Do Not Copy N4251w 1M 10...

Page 14: ...buttons Select desire device M Zoom Adjust window size N WIDE Change aspect ratio O UP DOWN LEFT RIGHT ENTER UP DOWN for OSD function select and LEFT RIGHT for function adjust ENTER Enter the function...

Page 15: ...vid and Hi Bright Audio Menu To set the audio quality and status Audio Menu is active in all input sources Bass To adjust bass Treble To adjust the treble Balance To adjust left and right audio balanc...

Page 16: ...factory default of the password is 0000 To enable parental control input the password press button to focus on OK key and then press ENTER Select Cancel if you want to exit After entering the followi...

Page 17: ...To clear all the locks set before press ENTER The factory default of the password is 0000 To enable parental control input the password press button to focus on OK key and then press ENTER Select Can...

Page 18: ...TV PG TV 14 or TV MA The TV Ratings in English speaking region of Canada are de ned as following Use ENTER button to block or unblock the ratings and use MENU to exit CE_E Exempt CE_PG Parental guidan...

Page 19: ...n the TV Menu TV Menu To set up for TV It is only active in TV source The TV Ratings in French speaking region of Canada are de ned as following Use ENTER button to block or unblock the ratings and us...

Page 20: ...r Medium Font Style To select different font style from Style 1 to Style 7 Font Color To select a font color from Black White Green Blue Red Cyan Yellow or Magenta Font Opacity To select font opacity...

Page 21: ...put source for main screen press SOURCES button PIP Size Select Press PIP Size to select the size of sub screen The function only acts on PIP PIP Position Select Press to select the position of sub sc...

Page 22: ...and analog video ports and route them into Main and PIP data path B 3D comb filter Video Decoder Deinterlacer and Scaling controller MT8202 includes 3D comb filter TV decoder to retrieve the best ima...

Page 23: ...ctively The control voltages are converted to analog signals through the on chip 1 bit sigma delta D A converters plus the off chip R C low pass filters The automatic gain control keeps the received p...

Page 24: ...UG_POWER MT8293 has 3 I2C interfaces LCD Controller IC use the CSDL CSDA interface to access MT8293 registers MT8293 use KSDL KSDA interface to read HDCP key from the EEPROM HDMI transmitter use DSDL...

Page 25: ...AD12250 converts stereo single ended analog input signals into 24 bit I2S digital audio data through on chip anti aliasing filter multi bit modulator decimation filter and high pass filter which remov...

Page 26: ...e C Press POWER and ENTER at the same time then go into the FACTORY MODE Fig 1 Fig 2 D Figure 1 Select EEPROM INITIAL and press ENTER The act of EEPROM INITIAL is completed when EEPROM INIT disappeare...

Page 27: ...when using an antenna TV system This air input jack both support TV and DTV systems Besides the TV system NTSC and DTV systems ATSC can be found by the scanning of AIR in the AUTO SCAN function B Cabl...

Page 28: ...75 203 75 209 75 215 75 475 75 481 75 487 75 493 75 499 75 505 75 511 75 517 75 523 75 529 75 535 75 541 75 547 75 553 75 559 75 565 75 571 75 577 75 583 75 589 75 595 75 601 75 607 75 613 75 619 75...

Page 29: ...7 00 263 00 269 00 275 00 281 00 287 00 293 00 299 00 305 00 311 00 317 00 323 00 329 00 335 00 341 00 347 00 353 00 359 00 365 00 371 00 377 00 383 00 389 00 395 00 JJ KK LL MM NN OO PP QQ RR SS TT U...

Page 30: ...er LEVEL 60dBu regards as normally PRODUCTS OUTPUT CHECK ITEM A The same as CENTRALISM TRANSMITTING SIGNAL CHECK CONTENT B saturation TEST inputs the TV signal the input signal LEVEL establishment mos...

Page 31: ...0 106ms 0 064ms V Border 0 254ms 0 000ms 0 000ms 0 000ms H V Sync Interlace No No No No ITEM 5 6 7 8 TIMING 1024 768 60HZ 1024 768 75HZ 1280 720 60HZ 1280 768 60HZ Pixel Rate 65 000MHZ 78 750MHZ 74 2...

Page 32: ...959us 15 630us H DISPLAY 15 906us 11 852us H B Porch 2 994us 2 296us H Width 1 310us 1 037us H Border 0 000us 0 000us V TOTAL 16 662ms 16 661ms V DISPLAY 16 097ms 16 005ms V B Porch 0 377ms 0 594ms Vs...

Page 33: ...nform to the LCD TV you have to do the DDC key in 2 1 Equipment Needed N4251W 1M LCD TV DDC Card PC RS 232 cable Barcode Reader VGA Cable N4251W 1M LCD TV DDC Card PC RS 232 Cable VGA Cable Barcode Re...

Page 34: ...Card and N4251W 1M LCD TV with VGA Cable when key in DVI DDC information use VGA transform to DVI port 2 2 4 Connect Power Cord to N4251W 1M LCD TV 2 3 DDC Key In Procedure 2 3 1Run DDC exe 2 3 2 Cho...

Page 35: ...3 3 Press ENTER key 2 3 4 Input bar code 2 3 5 Press ENTER key then the successful picture is as follows DDC DOWNLOED OK 2 3 6 Exit program ViewSonic Corporation Confidential Do Not Copy N4251w 1M 32...

Page 36: ...e different EDID into each HDMI connector 3 1 Equipment Needed N4251W 1M LCD TV PC RS 232 cable Barcode Reader HDMI Cable N4251W 1M LCD TV PC RS 232 Cable HDMI Cable Barcode Reader 3 2 Setup Procedure...

Page 37: ...eyboard port 3 2 3 Connect DDC Card and N4251W 1M LCD TV with HDMI Cable 3 2 4 Connect Power Cord to N4251W 1M LCD TV 3 3 DDC Key In Procedure 3 3 1 Run DDC exe 3 3 2 Choose model number then ViewSoni...

Page 38: ...3 3 Press ENTER key 3 3 4 Input bar code 3 3 5 Press ENTER key then the successful picture is as follows DDC DOWNLOED OK 3 3 6 Exit program ViewSonic Corporation Confidential Do Not Copy N4251w 1M 35...

Page 39: ...execution N4251W 1M ISP FIXTURE PC 4 2 Installing the USB device driver The USB driver will be upgraded if necessary PL 2303 Driver Installer exe 4 3 Insert the USB to RS232 Download Board to PC s US...

Page 40: ...5 2 Select COM port Depends on the COM port assigned in System Device Manager Refer below right 4 5 3 Select Baud Rate 115200x 8 Suggestion ViewSonic Corporation Confidential Do Not Copy N4251w 1M 37...

Page 41: ...4 5 4 Enable the USB Bridge 4 5 5 Browsing the File to download ViewSonic Corporation Confidential Do Not Copy N4251w 1M 38...

Page 42: ...your platform and Mtktool 2 You can slow down the baud rate if some Flash memory can not works properly in high speed download 3 Please call the MediaTek contact window if any problem found like unsu...

Page 43: ...g Figure 2 1 3 Put the cushions on the LCD TV and put all the accessories into the carton Figure 3 1 4 Place the LCD TV into the carton At last close the carton and seal it with tape Figure 4 Figure 4...

Page 44: ...01131652P OWNER GUIDE 1 9 DC 00008107 2002310609P GUARANT CARD QSG 1 10 A 00005362 2427130046P AC POWER CORD 1 11 CB 00003425 2427701893P RCA CABLE 1 12 N A 2427704061P F F CABLE 1 13 A VC 0101 0386 2...

Page 45: ...om LCD TV 1 1 Unscrew 4 screws that secure Stand Unit and detach Dust Cover from the LCD TV 2 Disassembly of Rear Cover 2 1 Pull the Holder from the LCD TV 2 2 Unscrew 23 screws in the Rear Cover Stan...

Page 46: ...2 3 Prize the rectangle hole on Rear Cover Fig 1 with a screwdriver Fig 2 to make the Rear Cover detach from the LCD TV Fig 1 Fig 2 ViewSonic Corporation Confidential Do Not Copy N4251w 1M 43...

Page 47: ...3 Disassembly of Main Board Power Board IR Board Speaker Front Cover and Panel Unit 3 1 Unscrew 24 screws to remove Shield Plate Rear Cover ViewSonic Corporation Confidential Do Not Copy N4251w 1M 44...

Page 48: ...3 2 Unscrew 4 screws to remove speaker Speaker ViewSonic Corporation Confidential Do Not Copy N4251w 1M 45...

Page 49: ...3 3 Remove the function key ass y 3 4 Unscrew 18 screws to remove Front Cover and Bracket Fix ViewSonic Corporation Confidential Do Not Copy N4251w 1M 46...

Page 50: ...3 5 Unscrew 17 screws to remove metal fiting vesa support Bracket fix ViewSonic Corporation Confidential Do Not Copy N4251w 1M 47...

Page 51: ...ew 13 screws and disconnect the wires to remove Main Board 3 7 Unscrew 4 screws and disconnect the wires to remove Power Board Power Board Main Board ViewSonic Corporation Confidential Do Not Copy N42...

Page 52: ...rews to remove metal fiting io 3 9 Lay Panel Unit facedown and unscrew 18 screws on its right left up and down sides to remove Panel Unit and Panel Bracket ViewSonic Corporation Confidential Do Not Co...

Page 53: ...Panel Unit ViewSonic Corporation Confidential Do Not Copy N4251w 1M 50...

Page 54: ...145 No Yes Yes Check I135 is defective Replace I135 Yes Check I136 is defective Replace I136 Yes Check Pin37 of I145 is high Check Earphone circuit Yes Check I145 is defective Replace I145 Yes Check S...

Page 55: ...s Yes Replace I106 I107 START Check X100 is OK Replace I101 Replace I102 No No No Replace IR Board Replace x100 No No Check Wire Connection on power board is OK Replace Power Board Connect the wire Ye...

Page 56: ...Video wave form is on I804 Pin21 Check Q802 C886 is OK Check I106 has output signal at Pin13 22 of P803 Check the LVDS wire from P803 to panel is OK Replace Q802 or C886 Replace I804 Check L816 R172 R...

Page 57: ...Hz is on Pin4 of I115 Check I106 No Check I114 is defective Replace I114 Yes Check I115 has output signal at RP25 RP30 Replace I115 Yes No Yes Yes No Check I106 has output signal at Pin11 16 and Pin19...

Page 58: ...5112 Demod LCD Module NTSC HDMI SWITCH AV CVBS MT8202 COMBO Tuner S Video2 MT5351 Mpeg decoder CABLE DDR SDRAM HDMI 1 Speaker 10Wx2 YPbPr HDMI 3 Flash AV SV Audio RCAx2 MT8293 HDMI Rx DDR SDRAM PC Aud...

Page 59: ...6 1K R107 10K L236 R121 0805 6A C806 0 1U H105 HOLE GND 2 3 4 5 9 8 7 6 1 2 3 4 5 9 8 7 6 1 E B C SOT 23 Q102 MMBT3904 1 3 2 R103 4 7K C104 1U R102 10K L234 R121 0805 6A C805 4 7uF 50V C105 1000U 16V...

Page 60: ...AZ1117 adj 3 2 1 4 C121 100U 16V C116 0 1U L109 R121 0805 6A I101 AP1510 1 8 2 7 3 6 4 5 FB VSS EN VSS OCSET Output VCC Output R515 3 9K R517 3 65K 1 ADJ OUT IN I104 AIC117 1 8V SOT223 3 2 1 4 R844 6...

Page 61: ...A_CS_1 4 SY0 8 ERO3_GPIO 20 VIDEO_OUT 21 CCIR_GPIO_D 10 SDA0 26 SCL0 26 AUD_CTRL 12 TUNER_SW 13 READY 7 RED_LED 24 GREEN_LED 24 PWR_ON_OFF 1 IDT_OE 13 HD_PON 11 SB33B SB18A DV33A SB33B SB33B DV18A SB...

Page 62: ...0 1U C172 3300P R140 75 R121 0 C163 0 1U R143 150 C150 0 1U C145 0 1U RP18 47x4 1 2 3 4 5 6 7 8 C170 3300P R144 75 C180 0 1U C199 0 1U C0603 R123 22 C184 0 1U C137 0 1U C151 0 1U C188 0 1U I107 29LV1...

Page 63: ...P3 3 ADACVDD 3 ADCVDD 3 LVDDB 3 REFP 3 PLLVDD3 3 TESTP4 3 AADCVDD 3 TESTN3 3 GNDA 3 21 22 LVDDA 3 REFN 3 PLLVDD1 3 AVDD_VAD0 3 DACFS 3 AVDD_VAD1 3 AV33A AV33A ASB33A ADCV33A ADCV18A ASB18A ASB18A ADCV...

Page 64: ...603 C288 3300P C0603 C301 0 1U C0603 C304 0 1U C295 3300P C0603 C290 0 1U C0603 C296 3300P C0603 C305 0 1U C302 0 1U C0603 C306 0 1U C286 0 1U C291 0 1U C0603 C297 3300P C0603 C287 0 1U C294 0 01U C06...

Page 65: ...C818 0 1uF C0603 SMD R815 4 7K R0603 SMD C819 10nF C0603 SMD C822 10nF C0603 SMD R819 100 R0603 SMD R820 100K R0603 SMD L804 R121 0805 6A BEAD SMD 0805 2A R817 4 7K R0603 SMD Q802 2SC2712 SOT23 SMD 1...

Page 66: ...AVY0N SY0 TUMPX1 Y0 3 TUMPX1 7 MPX1 3 PR0 3 AADCVSS 3 5 21 22 SOY0 3 AVSY0 9 AVPR0P 9 VFE_GND1 2 3 5 22 AVPR0N 9 SY0 3 AVPB0N 9 CVBS0 3 SC0 3 PB0 3 AVSOY0 9 CVBS1 3 PB0 3 AVY0P 9 AVCVBS1 9 Y0 3 AVPB0...

Page 67: ...SC0 8 AV0SY0R_IN 19 YPBPR0L_IN 19 AVPR0P 8 AVY0N 8 AVSY0 8 AVPB0N 8 AVCVBS1 8 YPBPR0R_IN 19 AV0SY0L_IN 19 AVPB0P 8 AVY0P 8 AVSOY0 8 AVPR0N 8 AV0SY0L_IN 19 AV0SY0R_IN 19 YPBPR0L_IN 19 YPBPR0R_IN 19 L81...

Page 68: ...5 0 1U TP59 C362 100U 16V C391 0 1U C380 1000P RP29 33x4 1 2 3 4 5 6 7 8 L142 R121 0603 3A L141 R121 0603 3A C389 0 1U C361 1000P R223 NC C393 0 1U TP44 RP31 33x4 1 2 3 4 5 6 7 8 C374 1000P C402 0 1U...

Page 69: ...APM2301 P P809 HDMI_con 20 21 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 22 23 SHELL1 SHELL2 D2 D2 Shield D2 D1 D1 Shield D1 D0 D0 Shield D0 CK CK Shield CK CE Remote NC DDC CLK DDC DATA GND 5V H...

Page 70: ...3 SDA1 VI10 VOG3 U2RX AO1SDATA0 DV33 VI18 SCL1 VOR0 AO1MCLK 8293LRCK 8293SD0 8293BCLK 8293MCLK AO1LRCK AO1SDATA0 AO1MCLK AO1BCK HDMISD0 HDMILRCK HDMIMCLK HDMIBCLK AUD_CTRL AUD_CTRL 8293BCLK 8293MCLK 8...

Page 71: ...0 1uF C0603 SMD C857 0 1uF C0603 SMD C849 0 1uF C0603 SMD C862 0 1uF C0603 SMD R828 1M R0603 SMD R831 4 7K R0603 SMD C860 0 1uF C0603 SMD C828 10nF C0603 SMD L811 R121 0805 6A BEAD SMD 0805 C845 0 1uF...

Page 72: ...063 C439 0 1U C0603 I808 AP1510 1 2 3 4 8 7 6 5 FB EN OCSET VCC VSS VSS OUTPUT OUTPUT R850 1_3K C783 0 1U C0603 R232 0 R0603 C317 10U 50V C880 0 01uF NC L158 10uH SMD DRWW9 12 0 6mm C883 0 1U C0603 I1...

Page 73: ...R17 R18 D27 D28 E25 E26 E27 E28 F25 F26 F27 F28 G25 G26 G27 G28 H25 H26 H27 H28 J25 J26 J27 J28 K25 K26 K27 K28 L25 L26 L27 L28 M25 M26 M27 M28 N25 N26 N27 N28 P25 P26 P27 P28 T28 T27 T26 T25 U28 U27...

Page 74: ...GND VCNTL RP57 47x4 1 2 3 4 5 6 7 8 C496 0 1U C0603 R282 47 C535 0 1U C0603 C541 0 1U C0603 C512 0 1U C0603 C517 0 1U C0603 RP51 47x4 1 2 3 4 5 6 7 8 C525 0 1U C0603 RP48 75x4 1 2 3 4 5 6 7 8 RP68 75...

Page 75: ...DV33 DV33 DV33 DV33 DV33 DV33 R303 4 7K R0603 R295 NC 4 7K R0603 TP68 U1RX TP SMD D0 6 C550 0 1U C0603 R299 4 7K R0603 TP78 JTDO TP SMD D0 6 TP75 JTMS TP SMD D0 6 L168 R121 0603 3A L0603 RP83 10Kx4 RN...

Page 76: ...0603 C606 0 1U C0603 C560 4 7U C0805 C568 0 1U C0603 R314 47 R0603 C603 0 1U C0603 C582 0 1U C0603 C588 0 1U C0603 C557 1500P C0603 C566 4 7U C0805 C601 4 7U C0805 C579 0 1U C0603 C602 0 1U C0603 C552...

Page 77: ...L_IN 9 YPBPR0R_IN 9 AV0SY0L_IN 9 AV0SY0R_IN 9 GPIO7 3 GPIO9 3 12V 21 23 SG_12V SG_12V SG_12V SG_12V SG_12V SG_12V SG_12V SG_12V SG_12V R355 47K R362 47K R354 10K C633 0 1U C0603 C629 22U 50V R353 47K...

Page 78: ...C643 0 1U C649 10U 50V R379 10K R383 100K I136 AD12250 TSSOP16 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 M0 MCLK VL SDOUT GND VD SCLK LRCK RST AINL VQ AINR VA REF_GND FILT M1 C641 0 1U L181 R121 0603 3A...

Page 79: ...A 5 6 7 8 4 R498 NC 220 R430 100 R429 100 I139A NJM4558 OPA 3 2 1 8 4 E B C SOT 23 Q125 NC MMBT3904 1 3 2 R497 NC 10K C692 1000P L188 R121 0603 3A R415 20K C685 150P C669 220U 16V C687 820P C688 22U 5...

Page 80: ...D132 5 6V 1 2 C610 0 01U R340 510 R328 75 C623 0 01U C615 0 01U L824 R80 0603 200mA C621 5P R348 2K R324 100 R333 NC 10K D133 NC 5 6V 1 2 R327 68 I133 24C21 SMD DIP 1 2 3 4 5 6 7 8 NC1 NC2 NC3 GND SDA...

Page 81: ...03 C762 1n C0603 L202 15uH SMD C757 NC C0603 R404 4 7K R400 NC C659 1n C0603 L185 R121 0603 3A C675 0 1U C0603 L209 R121 0603 3A L200 R121 0805 6A R241 47 R242 47 C744 1n C0603 C663 1n C0603 C677 0 1U...

Page 82: ...0 3 RED_LED 3 GREEN_LED 3 GPIO11 3 GPIO15 3 GPIO16 3 IRRCVR 3 SB33B 5VSB 5VSB Q121 MMBT3906 1 2 3 C734 0 1U R469 10K R468 10K R467 10K R458 47 C728 0 1U R466 10K C732 0 1U R464 10K R465 10K C730 0 1U...

Page 83: ...858 22K P803 CON 2X15 2mm 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 C735 100U 16V R859 180 0805 C740 0 1U I142 AP9435M 1 8 2 7 3 6 4 5 S D S D S D G D E B C SOT...

Page 84: ...SCL 3 10 13 23 SDA 3 10 13 23 SCL0 3 SDA0 3 SB33B SB33B 5VSB SB33B SB33B SB33B C741 100U 16V R503 4 7K R513 0 R846 10K R484 10K R489 47K C742 0 1U R487 10K D137 LL4148 E B C SOT 23 Q123 MMBT3904 1 3...

Page 85: ...9 PCB Layout Diagrams 9 1 MAIN PCB TOP VIEW ViewSonic Corporation Confidential Do Not Copy N4251w 1M 82...

Page 86: ...9 2 MAIN PCB BOTTOM VIEW ViewSonic Corporation Confidential Do Not Copy N4251w 1M 83...

Page 87: ...9 3 CON PCB TOP VIEW ViewSonic Corporation Confidential Do Not Copy N4251w 1M 84...

Page 88: ...9 4 CON PCB BOTTOM VIEW ViewSonic Corporation Confidential Do Not Copy N4251w 1M 85...

Page 89: ...9 5 IR PCB TOP VIEW ViewSonic Corporation Confidential Do Not Copy N4251w 1M 86...

Page 90: ...9 6 IR PCB BOTTOM VIEW ViewSonic Corporation Confidential Do Not Copy N4251w 1M 87...

Page 91: ...9 7 SWITCH PCB TOP VIEW ViewSonic Corporation Confidential Do Not Copy N4251w 1M 88...

Page 92: ...9 8 SWITCH PCB BOTTOM VIEW ViewSonic Corporation Confidential Do Not Copy N4251w 1M 89...

Page 93: ...10 Exploded View And Exploded Parts List ViewSonic Corporation Confidential Do Not Copy N4251w 1M 90...

Page 94: ...ViewSonic Corporation Confidential Do Not Copy N4251w 1M 91...

Page 95: ...24 0811 2080003700P SCREW SPE ISZZTER001A M3 6L MSWR17 FZMYI 6 33 N A 2080006900P SCREW SPE M4 10MM P TYPE 9 1MM 2 34 N A 2080006900P SCREW SPE M4 10MM P TYPE 9 1MM 2 35 N A 2071982000P METAL FITTG JC...

Page 96: ...08080 2212012000P V901 18 Hardware Bracket 2 0T HW 00008019 2071882300P 5B03 19 Box Carton 360X220X50mm B P 00004497 2011100017P 6P85 20 Polybag P 00008063 2013054002P 6P60 21 Craft Box P 00008103 201...

Page 97: ...C429FE FUNC COVER BKT SECC0 8 6F05 1 40 M SCW 0824 0812 2084730062P SCREW BND T M3X6 BND T 6F06 1 41 N A 2082630062P SCREW M3X6 P 0 5 6F07 2 42 M SCW 0824 0812 2084730062P SCREW BND T M3X6 BND T 6F08...

Page 98: ...6P CAP CHIP 125 C CS 0603 X7R 50V 0 1u K T C134 1 124 E C 0404 4423 2341122096P CAP CHIP 125 C CS 0603 COG 50V 22p J T C135 1 125 N A 2341127096P CAP CHIP 125 C CS 0603 COG 50V 27p J T C136 1 126 N A...

Page 99: ...36022713P HI LIFE LOW ESR E CAP 4000HR EC 220u 16V 8 7 P 5 0 T C220 1 210 N A 2336310713P CAP MINI ELE 105 C EC 100u 16V 6 3 7 P 2 5 T C222 1 211 N A 2346110496P CAP CHIP 125 C CS 0603 X7R 50V 0 1u K...

Page 100: ...50V 5 11 P 2 5 T C317 1 296 N A 2346110496P CAP CHIP 125 C CS 0603 X7R 50V 0 1u K T C318 1 297 N A 2346147396P CAP CHIP 125 C CS 0603 X7R 50V 0 047u K T C331 1 298 N A 2346147296P CAP CHIP 125 C CS 0...

Page 101: ...C CS 0603 X7R 50V 0 1u K T C429 1 382 N A 2346110496P CAP CHIP 125 C CS 0603 X7R 50V 0 1u K T C430 1 383 N A 2336310713P CAP MINI ELE 105 C EC 100u 16V 6 3 7 P 2 5 T C431 1 384 N A 2346110496P CAP CH...

Page 102: ...CAP CHIP 125 C CS 0603 X7R 50V 0 1u K T C564 1 468 N A 2346110496P CAP CHIP 125 C CS 0603 X7R 50V 0 1u K T C565 1 469 N A 2347647596P CAP CHIP 85 C CS 0805 Y5V 16V 4 7u Z T C566 1 470 N A 2346110496P...

Page 103: ...0603 X7R 50V 0 1u K T C654 1 554 N A 2346710596P CAP CHIP 85 C CS 0603 Y5V 16V 1 0u Z T C655 1 555 N A 2341110296P CAP CHIP 125 C CS 0603 COG 50V 1000p J T C658 1 556 N A 2341110296P CAP CHIP 125 C C...

Page 104: ...C817 1 639 N A 2346110496P CAP CHIP 125 C CS 0603 X7R 50V 0 1u K T C818 1 640 N A 2346110396P CAP CHIP 125 C CS 0603 X7R 50V 0 01u K T C819 1 641 N A 2336610613P CAP MINI ELE 105 C EC 10u 50V 5 7 P 2...

Page 105: ...IODE RECT SMD BAS32L SOD80C PHILIPS D130 RC 1 725 E 00003830 2364601396P DIODE SWITCH SMD 1N4148W 7 F SOD 123 DIODES D130 RD 1 726 E D 0403 1779 2364503996P DIODE ZENER SMD BZV55 C5V6 5 SOD 80C PHILIP...

Page 106: ...811 N A 2365425416P DIGITAL IC NJM4558M DMP8 JRC I139 1 812 E 00000915 2360501196P FET P CH SMD AP9435GM SO 8 APEC I142 RA 1 813 E 00003529 2360501796P FET P CH SMD APM9435KC SO 8 Anpec I142 RB 1 814...

Page 107: ...12 3 4 5 YOUTH L206 1 898 N A 2370115016P COIL CHOKE SMD 15uH 12 3 12 3 4 5 YOUTH L207 1 899 N A 2379512106P BEAD HI CURRENT Z 120 ohm 0603 I 3 0A L208 1 900 N A 2379512106P BEAD HI CURRENT Z 120 ohm...

Page 108: ...624 2360301696P XISTOR NPN R SMD PMBS3904 SOT 23 PHILIPS Q103 RA 1 988 E Q 0402 1608 2360300896P XISTOR NPN R SMD MMBT3904K SOT 23 FAIRCHILD Q103 RB 1 989 E Q 0402 1087 2360301896P XISTOR NPN R SMD MM...

Page 109: ...IP 1 10W RC 0603 1 10W 22 ohm J T R132 1 1069 E R 0405 6600 2253200096P RES CHIP 1 10W RC 0603 1 10W 0 ohm J T R133 1 1070 N A 2253275096P RES CHIP 1 10W RC 0603 1 10W 75 ohm J T R134 1 1071 N A 22532...

Page 110: ...0603 1 10W 75 ohm J T R275 1 1156 N A 2253247096P RES CHIP 1 10W RC 0603 1 10W 47 ohm J T R276 1 1157 N A 2253275096P RES CHIP 1 10W RC 0603 1 10W 75 ohm J T R277 1 1158 N A 2253247096P RES CHIP 1 10W...

Page 111: ...J T R391 1 1242 N A 2253210096P RES CHIP 1 10W RC 0603 1 10W 10 ohm J T R393 1 1243 N A 2253210096P RES CHIP 1 10W RC 0603 1 10W 10 ohm J T R394 1 1244 N A 2253210096P RES CHIP 1 10W RC 0603 1 10W 10...

Page 112: ...P RES CHIP 1 10W RC 0603 1 10W 0 ohm J T R537 1 1329 E R 0405 6600 2253200096P RES CHIP 1 10W RC 0603 1 10W 0 ohm J T R538 1 1330 E R 0405 6600 2253200096P RES CHIP 1 10W RC 0603 1 10W 0 ohm J T R801...

Page 113: ...P4R 1 16W 33 ohm J P 0 8 RP26 1 1414 N A 2259233008P RES CHIP NETWORKS 8P4R 1 16W 33 ohm J P 0 8 RP27 1 1415 N A 2259233008P RES CHIP NETWORKS 8P4R 1 16W 33 ohm J P 0 8 RP28 1 1416 N A 2259233008P RES...

Page 114: ...4600P PCB MULTILAYER JC378AB11UA M B FR4 4 357 150 U101 1 1465 N A 2202136500P PC BOARD JC429FE K B CEM1 120 20 U701 1 1466 N A 2202126400P PC BOARD JC206 IR B CEM1 51 5 9 U702 1 1467 N A 2202132800P...

Page 115: ...low Chart 7 Block Diagram 8 Schematic Diagrams 9 PCB Layout Diagrams 10 Exploded Diagram And Exploded Parts List 11 Recommended Spare Parts List B Are you satisfied with this Service Manual Item Excel...

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