ViewSonic N4285p-4M Service Manual
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ViewSonic N4285p-4M Service Manual

42" lcd tv
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Service Manual
ViewSonic N4285p-4M
Model No. VS11983-4M
42" LCD TV
(N4285p-4M_SM Rev. 1a Oct. 2009)
®
ViewSonic
381 Brea Canyon Road, Walnut, California 91789 USA - (800) 888-8583

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  • Page 1 Service Manual ViewSonic N4285p-4M Model No. VS11983-4M 42” LCD TV (N4285p-4M_SM Rev. 1a Oct. 2009) ® ViewSonic 381 Brea Canyon Road, Walnut, California 91789 USA - (800) 888-8583...
  • Page 2 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

    6. Trouble Shooting Flow Chart..............57 7. Block Diagram ..................... 60 8. Schematic Diagrams..................61 9. PCB Layout Diagrams ................. 79 10. Exploded View And Exploded Parts List ..........81 11. Recommend Spare Parts List..............90 ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...

  • Page 4: Precautions And Safety Notices

    (IEC60950 or UL1950), or be applied exemption. (14) The LCD module is designed so that the CFL in it is supplied by Limited Current Circuit (IEC60950 or UL1950). Do not connect the CFL in Hazardous Voltage Circuit. ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...
  • Page 5 Taking out the monitor by grasping the LCD panel. That may cause “Mura” Place the monitor on a clean and soft foam pad. Placing the monitor on foreign objects. That could scratch the surface of the panel or cause “Mura” ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...

  • Page 6: Specification

    Typical. 0.35 V Audio Characteristics: AF Output Level Measured via Typical. 0.35Vrms LP 20 kHz Filter, RMS Decoder, 75us De-emphasis 10% (max.) 44 dB (min.) Compatible system TUNER NTSC/ATSC Compatible system AV NTSC M ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...
  • Page 7 Audio amp of this product shall be provided by “YAMAHA” with a Model Number of YDA148 . “SiS” SiS328MX for N4285p-4M shall be used as sound processor. In addition, a pair of speakers shall be integrated within this product. The audio signals of this product shall comply with the specification listed in the following table.
  • Page 8 5. Firmware & OSD The product firmware of VS11983-4M shall have a firmware version of V:P01 or later version. Any changes/revisions afterward shall also be pre-approved by ViewSonic in written. For VS11983-4M, its firmware shall have a built-in frequency table for NTSC/ATSC off-air TV/CATV, Closed-Caption, and with MTS implementation.
  • Page 9 External Plastic Chassis Components Plastic Chassis, Cover, Stand (Metal + Plastic),Len and Button Exterior Chassis Color/Texture/Details Refer to Figure 1 – Product ID Chassis Component’s Color Difference Refer to Figure 1A – Color Guide ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...
  • Page 10 Workmanship 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 Label A label identifying the product name, model/serial number and FCC ID/Logo shall be placed into the rear label recess located on the rear panel of the chassis.

  • Page 11: Front Panel Function Control Description

    Turn OSD menu ON/OFF. Increase sound volume or adjust a highlighted control while in Volume Up OSD menu. Decrease sound volume or adjust a highlighted control while in Volume Down OSD menu. ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...
  • Page 12 Connect the S-Video cable from the compatible device to this S-Video input connector on the rear panel of the LCD TV. Connect this port to the RCA audio output connectors of your HDMI 1 signal Audio input (left/right) A/V device. ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...
  • Page 13 Connect this port to PC line out jack. SPDIF Optical output Connect this port to the SPDIF input of A/V device. Connect the coaxial (RF) connector from Antenna/ Cable/ Air/Cable input jack Digital cable. ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...
  • Page 14 ( For China area ) ( For Hong Kong area ) ( For China area ) ( For Hong Kong area ) ( For China area ) ( For Hong Kong area ) ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...
  • Page 15 Press to display the Electronic Program Guide (EPG). It contains the program information for the channel you’re watching. ＊ The picture here shows an example of the GUIDE screen in a DTV source. ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...
  • Page 16 ＊ To preset favorite channels, use the FAV.A/D key. 21 MENU Press to turn the OSD (On-Screen Display) menu on. When in OSD menu, press to exit or return to the previous page. ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...
  • Page 17 7. The Initial Setup will be completed after Channel scanning is finished. To interrupt the scanning, press MENU at any time. (see Figure 6) Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...
  • Page 18 (It shows all or some of the information about Input, Channel, Resolution, Audio Type, etc., depending on what input source it is in) ＊The picture here shows an example of the INFO screen in a DTV source. ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...
  • Page 19 TV, AV, S-Video, YPbPr 1, YPbPr 2, HDMI 1, HDMI 2, VGA or USB (When in USB input source, the system only supports JPEG image files.). 3. To confirm the selection, press ENTER. ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...
  • Page 20 4. Press ▲ or ▼ to select the control with ►, such as “Color Temp”, “Auto Scan”, “Channel Skip”, “Input Label”, “Time Setup”,“Closed Caption”, “V-Chip”, “Memory Recall”, then press ENTER or ► to perform the function or enter detailed settings. ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...
  • Page 21 ENTER button to enter “Channel Skip” setting. 3. Press ▲ or ▼ to select the channel you want to skip, and check or uncheck it with ENTER button. 4. Press MENU to exit. ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...
  • Page 22 To perform custom digital caption style settings, select “Digital CC Style” to “By User”, then use ▲ or ▼ to select desired controls, ◄ or ► to adjust detailed settings. 4. Press MENU to exit. ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...
  • Page 23 PG-13 (recommended for children 14 years of age or older) R (mature audience) NC-17 (no one under 17 years of age) X (adult audience only) NR (not applicable) 2. Press MENU to exit. ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...
  • Page 24 16 ans+ (not appropriate for children of less than 16 years) 18 ans+ (reserved to adults) 2. Press ENTER to set or reset the rating level. 3. Press MENU to exit. ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...
  • Page 25 4. Press ▲ or ▼ to select “TV ID”, then press ◄ or ► to set the TV ID number from 01~99. For detailed information, refer to the RS232 Protocol on page 42~52. ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...
  • Page 26 TV channels. Auto Scan: To auto scan TV and DTV channels. • Channel Skip: To skip channels. • MTS: To select audio mode. • Prefer Language: To select available audio language. • ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...
  • Page 27 - BG Opacity: To select background opacity. V-Chip: To set TV blocking level for DTV programs. • Memory Recall: To restore the factory default settings. • TV ID: To set the TV ID number from 01~99. • ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...
  • Page 28 ＊ Rotate: Select Rotate and press Enter to rotate the picture. ＊ Last Layer: Press this key to return to the previous page. Notes:Initial password:0000 If you forget your initial password,you can press"3660"to resume. ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...

  • Page 29: Circuit Description

    As illustrated in figure 1, external components to constitute an affordable Full HD DTV system based on SiS 316MX thus comprise only a demodulator, a larger-power audio amplifier driving speaker, one piece of 32MX16 bit DDRII-800, one 4 MB code-flash, and one 512KB Data-flash. ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...
  • Page 30 ► 6 Degree Low Angle edge Interpolation ► Scalar ► Linear & Non-Linear Panoramic Scaling ► Noise Reduction ► 3D Adaptive NR ► De-blocking filter ► Contrast Enhancer ► LTI/CTI Sharpening with Peaking Control ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...
  • Page 31 ► Dual LVDS Links support either 24/36bpp single pixel up to 110Mhz or 30bpp dual pixels up to 85Mhz ► Support Thine & TI output data mapping ► Spread spectrum technology for EMI suppression 1.12 Embedded Processor Core ► Two High-Performance MIPS®4KEcTM CPU cores ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...
  • Page 32 The HVAGPIOxx category employs type C which is a 3.3V output and 5V input –tolerant with internal pull-up when operated in the input mode. Note that the pull-up is software-enabled/disabled. Upon power cord first plugged in, the pull-up is disabled. ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...

  • Page 33: Adjustment Procedure

    1. VGA source: under the picture FULL WHITE and check the value of each color. Preset color for N4785P4M x=0.283±0.030 y=0.298±0.030 2. YpbPr source: under the picture FULL WHITE and check the value of each color. Preset color for N4785P4M x=0.283±0.030 y=0.298±0.030 ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...
  • Page 34 After final QC step, we must to erase all saved changes again and restore the factory defaults. You should do “Memory Recall” again. Turn off the LCD TV by pressing “Power” button. ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...
  • Page 35 655.00 613.75 614 – 620 615.25 661.00 619.75 620 – 626 621.25 667.00 625.75 626 – 632 627.25 673.00 631.75 632 – 638 633.25 637.75 679.00 639 – 644 639.25 643.75 685.00 ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...
  • Page 36 635.75 677.00 336 – 342 337.25 341.75 383.00 636 – 642 637.25 641.75 693.00 342 – 348 389.00 642 – 648 643.25 689.00 343.25 347.75 647.75 348 – 354 349.25 353.75 395.00 ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...
  • Page 37 B.CHANNEL36: Check whether the color of the color bar is normal. C.CHANNEL69: Turn RF attenuator and check the critical point of the change of the image’s S/N is under LEVEL<45~85> dBu, regards as normally. ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...
  • Page 38 16.666ms 13.328ms 16.666ms V TOTAL 12.800ms 15.880ms 12.795ms 15.880ms V DISPLAY 0.448ms 0.600ms 0.466ms 0.600ms V B-Porch 0.064ms 0.124ms 0.050ms 0.124ms Vs Width 0.000ms 0.000ms 0.000ms 0.000ms V Border H/V Sync Interlace ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...
  • Page 39 16.661ms 16.679ms 16.686ms V TOTAL 16.097ms 16.005ms 16.082ms 16.22ms V DISPLAY 0.377ms 0.594ms 0.459ms 0.36ms V B-Porch 0.126ms 0.047ms 0.092ms 0.075ms Vs Width 0.00ms 0.00ms 0.00ms 0.00ms V Border H/V Sync Interlace ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...
  • Page 40 DDC Card RS-232 cable Barcode Reader VGA Cable N4285P4M LCD TV DDC Card RS-232 Cable VGA Cable Barcode Reader 2.2 Setup Procedure 2.2.1 Connect VGA Card and DDC Card with RS-232 cable. ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...
  • Page 41 2.2.4 Connect Power Cord to N4285P4M LCD TV. 2.2.5 Press ‘MENU’and ‘ENTER’ at the same time, then go into the BURN IN MODE. 2.3 DDC Key In Procedure 2.3.1 run DDC exe 2.3.2 Choose model number the ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...
  • Page 42 2.3.3 Press “ENTER” key. 2.3.4 Press “F4” key and Input bar code ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...
  • Page 43 2.3.5 Press “ENTER” key, then the successful picture is as follows. “DDC DOWNLOAD OK! 2.3.6 Exit program. ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...
  • Page 44 3.1 Equipment Needed N4285P4M LCD TV RS-232 cable Barcode Reader HDMI Cable N4285P4M LCD TV RS-232 Cable HDMI Cable Barcode Reader 3.2 Setup Procedure 3.2.1 Connect HDMI Card and DDC Card with RS-232 cable. ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...
  • Page 45 3.2.3 Connect DDC Card and N4285P4M LCD TV with HDMI Cable. 3.2.4 Connect Power Cord to N4285P4M LCD TV. 3.3 DDC Key In Procedure 3.3.1 Run DDC.exe 3.3.2 Choose model number then ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...
  • Page 46 3.3.3 Press “ENTER” key. 3.3.4 Press “F4” key. ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...
  • Page 47 3.3.5 Input bar code 3.3.6 Press “ENTER” key, then the successful picture is as follows. “DDC DOWNLOAD 3.3.7 Exit program ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...
  • Page 48 - Firmware Upgrade Program N4285P4M USB Update Method. 4.2.1 Set up a folder of “N4285p-4M” (has to be the same capitalization) under the USB root menu. 4.2.2 Put the three files of “codeFlash.code”, “custom.save”, and “dataFlash.data” into the folder of “N4285p-4M”.
  • Page 49 1.4 Place the LCD TV into the carton. At last, close the carton and seal it with tape. (Figure 4) 1.Power Cord 2. User’s Guide 3.Remote control 4.Guarant Card 5.Battery Figure 3 Figure 4 Figure 3 ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...
  • Page 50 PACKING PART LIST ( N4285p-4M ) ViewSonic Model Number: VS11983-4M Rev:1a Item ViewSonic P/N Ref. P/N Description Q'ty N4285P4M monitor P-00009056 2013054063P POLYETHY BAG P-00008342 2012199910P POLYFOAM(TOP) P-00008106 2012196800P POLYFOAM(B.L) P-00008107 2012196900P POLYFOAM(B.R) 2013222536P POLYETHY BAG 2438501329P CD-OWNER GUIDE 2002310761P...
  • Page 51 1.1 Unscrew 4 screws that secure Stand Unit and detach Dust Cover from the LCD TV. Stand 2. Disassembly of Rear Cover. 2.1 Pull the Holder from the LCD TV. 2.2 Unscrew 23 screws in the Rear Cover. ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...
  • Page 52 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 N4285p-4M Confidential - Do Not Copy...
  • Page 53 Rear Cover 3. Disassembly of Main Board, Power Board, IR Board, Front Cover and Panel Unit. 3.1 Unscrew 24 screws to remove Shield Plate. ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...
  • Page 54 3.2. Remove the function key ass’y. 3.3. Unscrew 18 screws to remove Front Cover and Bracket Fix. ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...
  • Page 55 3.4. Unscrew 17 screws to remove metal fiting vesa support. Bracket Fix ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...
  • Page 56 3.4. Unscrew 17 screws and to remove Shield plate. Shield plate 3.5. Unscrew 6 screws and disconnect the wires to remove Power Board. Power Board ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...
  • Page 57 3.6. Unscrew 5 screws and disconnect the wires to remove Main Board. Main Board 3.7. Unscrew 5 screws to remove METAL FITTG-I/O. METAL FITTG-I/O ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...
  • Page 58 3.8. 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 N4285p-4M Confidential - Do Not Copy...
  • Page 59 Panel Unit ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...

  • Page 60: Trouble Shooting Flow Chart

    Check P102 5V,12V Connection on power Replace Power module module is OK? Chenk 3 3V is on Replace I113 C183? Check IR Board Replace IR board Check X101 is OK? Replace X101 Replace I121 ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...
  • Page 61 6.2. NO VOICE AV,S-VIDEO,YPbPr Check I103 Pin14 has output signal? Replace I103 Check I121 signal Replace I121 output to I601 Check Speaker Wire ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...
  • Page 62 6.3. NO DISPLAY ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...

  • Page 63: Block Diagram

    AUDIO INPUT: YPP2: PORT2 AV1 & SV AUDIO OUTPUT YPP2 YPP1 HDMI2 USB*1 CONN. HDMI1 CONN. HDMI2 CONN. VGA CONN. RCA3*2 CONN. AV1/SV CONN. RCA3*2 CONN. RCA2*2 CONN. PHONE JACK1*2 CONN. OPTICAL CONN. ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...

  • Page 64: Schematic Diagrams

    R388 1N4148 AUX_PWROK Cload: 20pF RESET# R392 6.04K_1% 1N4148 APX809-31SA_SOT23 SIS_LVDS_SWING_C R394 Vth=3.08V NC/10K MAIN_PWROK AUX_PWROK C441 R391 NC/10K C443 NC/100nF_16V NC/47pF R395 C444 S101 NC/22K C442 BUTTON C440 1uF_16V NC/100nF_16V 10uF_10V ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...
  • Page 65 YPP_VS0 R346 VGA_VSYNC 4,12 HDMIA_5VDET HDMI_RSET HDMIB_5VDET SIS_HDMIA_HPD R348 V_3.3V_AUX D129 SIS_HDMIB_HPD C429 1N4148 R347 HDMI_CEC NC/22pF 建議 L102=3.9uH ,C427=360pF,C428=3 60pF,R344=75ohm 499R_1% V_3.3V jean:預留不上件 R349 1K_1 HDMI_RTTRSET V_5V_AUX R350 SIS_HDMIA_HPD R351 SIS_HDMIB_HPD ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...
  • Page 66 HDMI1_AUDIO_L_R HDMI1_DVI_Audio_L SIF_REFB C364 10uF_10V C383 R321 C384 C365 100nF_16V NC/1nF NC/47K NC/330pF C368 C369 100nF_16V 100nF_16V R295 C385 R322 0R/1K HDMI1_R0 1uF_16V HDMI1_AUDIO_R HDMI1_AUDIO_R_R HDMI1_DVI_Audio_R C386 R323 C387 NC/1nF NC/47K NC/330pF ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...
  • Page 67 V_1.8V I121,I123 V_1.8V R282 1K_1% C335 470uF_16V_LESR DDR_VREF C336 100nF_16V R283 1K_1% C350 C351 C352 C353 100nF_16V 100nF_16V 100nF_16V 100nF_16V CLOSE TO I123 CLOSE TO DIVIDER CLOSE TO DRAM CLOSE TO SIS328 ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...
  • Page 68 80Z_0603 80Z_0603 80Z_0603 C318 C319 C320 80Z_0603 C315 AVDD1P2_HDMI AVDD1P2_USB 100nF_16V C314 100nF_16V C316 C317 220pF 10uF_10V NC/1uF_16V 100nF_16V 100nF_16V AVSS1P2_USBCLK C321 C322 NC/1uF_16V NC/1uF_16V 請留意 接地時請勿於 C 底下直接打 ， 需拉至 外在接地 ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...
  • Page 69 1uF_16V PLACE THESE CAPACITORS V_3.3V PLACE THESE UNDER SIS328 SOLDER SIDE V_1.2V CAPACITORS UNDER V_1.8V SIS328 SOLDER SIDE PLACE THESE CAPACITORS PLACE THESE UNDER SIS328 SOLDER SIDE CAPACITORS UNDER SIS328 SOLDER SIDE ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...
  • Page 70 R641 240K PLIMIT SLEEPN R634 CHANNEL AVDD_3.3V R645 SPEAKER R621 AMP_MUTE_L SIS_MUTE_SP_N C618 R696 C654 NC/1uF_16V 1.5K C653 220nF_50V/0805 220nF_50V/0805 L608 PVDD PVDD 15UH-CHOKE-5mm C656 C655 0.33uF_63V/DIP 220nF_50V/0805 L609 15UH-CHOKE-5mm C657 220nF_50V/0805 ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...
  • Page 71 DDC_CLK1 R271 SIS_HDMIB_SCL 4 DDC_DAT1 R272 SIS_HDMIB_SDA 4 HDMIB_5V R195 100R HDMIB_5VDET 5 HDMIB_HPD_R R275 D155 D156 D157 D158 D159 NC/1K P118 HDMI/19 R276 100R SIS_HDMIB_HPD 5 4.7P 4.7P 4.7P 4.7P 4.7P ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...
  • Page 72 NC/MMBT3904 AV/S-Terminal P116 MINIDIN6 L180 3.3uH_0805 SV1_Y AV1_FIL C390 22pF C392 C393 R334 75R_1% 390pF 390pF SV1_Y0 SV1_C0 L181 3.3uH_0805 SV1_C C398 22pF D154 D160 D161 C403 R338 C402 75R_1% 390pF 390pF ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...
  • Page 73 HP_L SIS_HP_L0 C228 R238 2N7002 SIS_HP_L 1uF_16V L137 600Z PC_HDMI2_AUDIO_IN PC_HDMI2_A_R2 PC_HDMI2_A_R1 R239 100R PC_HDMI2_AUDIO_R L138 600Z PC_HDMI2_A_L2 PC_HDMI2_A_L1 R240 100R PC_HDMI2_AUDIO_L D120 D121 D122 D123 D124 4.7P 4.7P 4.7P 4.7P 4.7P ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...
  • Page 74 SIS_SPI_CS_N SIS_SPI_DO 4 SIS_SPI_CS1_N SIS_SPI_CS_N V_3.3V_SPI FLASH_SPI_DI 4 1x3HEADER_SW AUX_PWROK 4 SIS_SPI_CS0_N R377 6.8K V_3.3V_SPI V_3.3V_SF100 SIS_SPI_CS1_N R378 6.8K B9B-PH SIS_SPI_CLK R379 6.8K V_3.3V_AUX D107 R464 NC/0 BAT54C 建議量產時可省下 上 464 D107, ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...
  • Page 75 CON 2X20 2mm Panel LVDSB_CLK_DN CON20X2VM-2M SIS_LVDSB_CLK_DN LVDSB_CLK_DP SIS_LVDSB_CLK_DP NC/CHOKE_CM14 R194 HOLE/GND HOLE/GND HOLE/GND HOLE/GND GND32PDX GND32PDX GND32PDX GND32PDX GNDPADL39X118 GNDPADL39X118 SD02 SD95X87 SHIELDING COVER HOLE/GND HOLE/GND HOLE/GND GNDPADL39X118 GNDPADL39X118 GND32PDX GND32PDX GND32PDX GNDGNDGNDGND ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...
  • Page 76 V_5V_AUX V_3.3V_AUX V_5V_AUX VOUT R171 V_5V_AUX DEFUALT:0~3.3V POWER_EN R173 R174 SIS_PSON V_5V FOR 0~5V:UNSTUFF R173, I114_SET Amp12_18V 4.7K NC/4.7K STUFF R174 Amp12_18V BL_EN SIS_BL_EN CON11 P=2.0mm CON12 P=2.0mm 11P200H3 42">Amp12V 12P200H3 47">Amp18V ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...
  • Page 77 100nF_50V/0603 1uF_50V_LESR 120Z0805_3A C231 C232 100nF_16V 100uF_16V_LESR I108 C168 FP6736S5PTR V_IN 100nF_16V C170 C166 100nF_50V/0603 R152 100uF_16V_LESR 274K_1% SHDN R0603 R153 11K5_1% R152(Rb) = 274K for FP6736S5PTR R152(Rb) = 267K for AP1522WA ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...
  • Page 78 R143 SDA_TUNER_3 V_1.2V_DM C147 C148 I2C BUS NC/22pF NC/22pF close to S5H1411 C140 C141 C142 C143 C144 C145 C146 100nF_16V 100nF_16V 100nF_16V 100nF_16V 100nF_16V 100nF_16V 100nF_16V Each pin has one bypass capacitors ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...
  • Page 79 I603 TPA6113A2 10uF_10V 100nF_16V C610 R612 10uF_10V 5.6K IN1- C611 R613 10uF_10V 5.6K LINE_OUT_R 13 IN2- AUDIO_DAC_EN R616 AUDIO_EN LINE_OUT_L 13 SHUTDOWN BYPASS SHUTDOWN = 1 =>MUTE SHUTDOWN = 0 =>NORMAL C612 1uF_16V ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...
  • Page 80 S703 S704 S706 S707 GND-K P711 LED_R VOL+ VOL- DOWN MENU LED_G IR_IN I711 CAM-1538TP5 JST 5/P=2.0/180 D711 B.P.F GND-IR Center Frequecy = 38Khz GND-IR P712 PWRON S701 JST 2/P=2.0/180 GND-IR GND-IR ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...
  • Page 81 PA02 MRXD RRXD RA07 U0RX RIN1 ROUT1 RIN2 ROUT2 MTXD RA10 U0TX T1OUT TIN1 TOUT2 TIN2 MC2P RA08 MC2M DB9_V CA05 CA06 CA07 0.1uF 0.1uF 0.1uF MAX232DR/ADM3202 CA08 0.1uF pin2,pin3 change 2008-09-08 ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...

  • Page 82: Pcb Layout Diagrams

    9. PCB Layout Diagrams 9.1. MAIN PCB TOP VIEW ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...
  • Page 83 9.2. MAIN PCB BOTTOM VIEW ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...

  • Page 84: Exploded View And Exploded Parts List

    9.3. CON PCB TOP VIEW 9.4. CON PCB BOTTOM VIEW ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...
  • Page 85 9.5. IR PCB TOP VIEW 9.6. IR PCB BOTTOM VIEW ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...
  • Page 86 9.7. SWITCH PCB TOP VIEW ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...
  • Page 87 9.8. SWITCH PCB BOTTOM VIEW ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...
  • Page 88 9.9. RS232 PCB TOP VIEW ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...
  • Page 89 9.10. RS232 PCB BOTTOM VIEW ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...
  • Page 90 10. Exploded View And Exploded Parts List ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...
  • Page 91 ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...
  • Page 92 Exploded Parts List ( N4285p-4M ) ViewSonic Model Number: VS11983-4M Rev:1a Item ViewSonic P/N Ref. P/N Description Q'ty 2024274502P FRONT BEZEL JC429FE ABS94HB PZ2-608-80 2053754801P LED INDIC.-PWR JC268FE PMMA LIMPID 2033150802P IR COVER JC428FE 121R-BR2D052T DARK GRAY PC 2032202001P GRILL...

  • Page 93: Recommend Spare Parts List

    Remark 1: Above listed items are examples, supplier can expand the rows to add more necessary item All revised RSPLs with newly added items or any change made should be highlighted and correlated with the ECN/ECR approved by ViewSonic Corporation. This is to eliminate repeated cross checks of each item between Remark 2: version and prior versions.
  • Page 94 BOM LIST (N4285P-4M ) ViewSonic Model Number: VS11983 Rev: 1a Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty 27001C11300 SET ASS'Y N4285P-4M 27011C11300 PCB ASS'Y N4285P-4M 27021C11300 PCB-MAIN N4285P-4M 27041C11300 AUTO INSERT-MAIN N4285P-4M 27061C11300 SMT-MAIN N4285P-4M 2340127096P CAP CHIP...
  • Page 95 Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty 2345710496P-02 CAP CHIP CS 0402/Y5V/16V 0.1u Z T 2345710496P-03 CAP CHIP CS 0402/Y5V/16V 0.1u Z T WALSIN 2345710496P-01 CAP CHIP CS 0402/Y5V/16V 0.1u Z T DARFON 2345710496P-02 CAP CHIP CS 0402/Y5V/16V 0.1u Z T...
  • Page 96 Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty 2345710496P-02 CAP CHIP CS 0402/Y5V/16V 0.1u Z T 2345710496P-03 CAP CHIP CS 0402/Y5V/16V 0.1u Z T WALSIN 2340147196P CAP CHIP CS 0402/NPO/50V 470p J T 2345710496P-01 CAP CHIP CS 0402/Y5V/16V 0.1u Z T...
  • Page 97 Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty 2346310596P-03 CAP CHIP CS 0603/X7R/16V 1.0u K T WALSIN 2346310596P-01 CAP CHIP CS 0603/X7R/16V 1.0u K T DARFON 2346310596P-02 CAP CHIP CS 0603/X7R/16V 1.0u K T 2346310596P-03 CAP CHIP CS 0603/X7R/16V 1.0u K T...
  • Page 98 Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty 2345710496P-03 CAP CHIP CS 0402/Y5V/16V 0.1u Z T WALSIN 2347710696P-01 CAP CHIP CS 0805/Y5V/10V 10u Z T DARFON 2347710696P-02 CAP CHIP CS 0805/Y5V/10V 10u Z T 2347710696P-03 CAP CHIP CS 0805/Y5V/10V...
  • Page 99 Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty 2436247996P VARISTOR ESD V-PORT 0603 4.7P M 2436250996P VARISTOR ESD V-PORT 0603 5.0P M 2436247996P VARISTOR ESD V-PORT 0603 4.7P M 2436250996P VARISTOR ESD V-PORT 0603 5.0P M 2436247996P VARISTOR ESD V-PORT 0603 4.7P M...
  • Page 100 Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty 2365425386P DIGITAL IC AP1522WA SOT23-5L ANACHIP 2365335976P LINEAR IC MT1117-3.3A SOT-223 MT 2365808196P IC LINEAR(SMD) AP1117E33L-13 SOT-223 DIODES 2365807196P IC LINEAR(SMD) AMC1117-3.3 SOT-223 2365808396P IC LINEAR(SMD) AIC1117-33PY SOT-223 2365336086P LINEAR IC LD1117AL-1.2V-A SOT-223...
  • Page 101 Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty 2253110196P RES CHIP 1/16W RC 0402 1/16W 100 ohm J T 2253100096P RES CHIP 1/16W RC 0402 1/16W 0 ohm J T 2253110196P RES CHIP 1/16W RC 0402 1/16W 100 ohm J T...
  • Page 102 Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty 2251110006P RES CHIP 1/16W RC 0402 1/16W 100 ohm F T 2251110016P RES CHIP 1/16W RC 0402 1/16W 1Kohm F T 2251110016P RES CHIP 1/16W RC 0402 1/16W 1Kohm F T...
  • Page 103 Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty 2253122296P RES CHIP 1/16W RC 0402 1/16W 2.2Kohm J T 2253110296P RES CHIP 1/16W RC 0402 1/16W 1K ohm J T 2253110396P RES CHIP 1/16W RC 0402 1/16W 10Kohm J T...
  • Page 104 Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty 2345710496P-01 CAP CHIP CS 0402/Y5V/16V 0.1u Z T DARFON 2345710496P-02 CAP CHIP CS 0402/Y5V/16V 0.1u Z T 2345710496P-03 CAP CHIP CS 0402/Y5V/16V 0.1u Z T WALSIN 2345710496P-01 CAP CHIP CS 0402/Y5V/16V 0.1u Z T...
  • Page 105 Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty 1086 2346310596P-03 CAP CHIP CS 0603/X7R/16V 1.0u K T WALSIN 1087 2345710496P-01 CAP CHIP CS 0402/Y5V/16V 0.1u Z T DARFON 1088 2345710496P-02 CAP CHIP CS 0402/Y5V/16V 0.1u Z T 1089...
  • Page 106 Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty 1185 2347710696P-02 CAP CHIP CS 0805/Y5V/10V 10u Z T 1186 2347710696P-03 CAP CHIP CS 0805/Y5V/10V 10u Z T WALSIN 1187 2347710696P-01 CAP CHIP CS 0805/Y5V/10V 10u Z T DARFON 1188...
  • Page 107 Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty 1284 2369106901P-02 XTAL OSC 24.690MHZ/49US 20pF/0.1mW SKC 1285 2369106901P-03 XTAL OSC 24.690MHZ/49US 20pF/0.1mW LIMING 1286 2369106901P-04 XTAL OSC 24.690MHZ/49US 20pF/0.1mW SHIN KOLN 1287 2369103611P-02 XTAL OSC 12.0000MHZ/49US 0.1mW/20pF 1288 2369103611P-03 XTAL OSC 12.0000MHZ/49US 0.1mW/20pF...
  • Page 108 1457 27006C11300 PACKING ASS'Y N4285P-4M 1458 P-00009779 2011142139P CARTON BOX VIEWSONIC N4285P-4M VS11983-4M 1459 2055632346P LABEL N4285P-4M VS11983-4M (M) CMO USA 1460 2055613612P LABEL ENERGY STAR STICKER 18x18mm 1461 2055613721P LABEL VIEWSONIC DOLBY/HDMI STICKER 50*8MM WHITE C-2009 1462 2055613379P LABEL VIEWSONIC CONTAINER LABEL 0.13...
  • Page 109 C. Do you have any other opinions or suggestions regarding this service manual? Reader’s basic dada: Name: Title: Company: Add: Tel: Fax: E-mail: After completing this form, please return it to ViewSonic Quality Assurance in the USA at facsimile 1-909-839-7943. ViewSonic Corporation N4285p-4M Confidential - Do Not Copy...

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