Service manual

ManualsBrandsViewSonic ManualsTVN3250w-1L

Service Manual

ViewSonic N3250w-1L

Model No. VS11335-1L

32” LCD TV

(N3250w-1L_SM Rev.1b_Aug.2008)

ViewSonic

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

Summary of content (103 pages)

PAGE 1
Service Manual ViewSonic N3250w-1L Model No. VS11335-1L 32” LCD TV (N3250w-1L_SM Rev.1b_Aug.
PAGE 2
Copyright Copyright© 2006 by ViewSonic Corporation. All rights reserved. No part of this publication may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language or computer language, in any form or by any means, electronic, mechanical, magnetic, optical, chemical, manual or otherwise, without the prior written permission of ViewSonic Corporation.
PAGE 3
TABLE OF CONTENTS 1. Precautions and Safety Notices................................................................. 1 2. Specification.................................................................................................4 3. Front Panel Function Control Description................................................ 9 4. Circuit Description.......................................................................................18 5. Adjustment Procedure ................................................
PAGE 4
1. Precautions and Safety Notices 1. Appropriate Operation (1) (2) (3) (4) (5) (6) (7) (8) (9) Turn off the product before cleaning. Use only a dry soft cloth when cleaning the LCD panel surface. Use a soft cloth soaked with mild detergent to clean the display housing. Disconnect the power plug from AC outlet if the product is not used for a long period of time. If smoke, abnormal noise, or strange odor is present, immediately switch the LCD display off.
PAGE 5
Circuit (IEC60950 or UL1950). Do not connect the CFL in Hazardous Voltage Circuit. 5.2. Handling and Placing Methods Correct Methods: Incorrect Methods: Only touch the metal frame of the LCD panel Surface of the LCD panel is pressed by fingers or the front cover of the monitor. Do not touch and that may cause “Mura” the surface of the polarizer. Take out the monitor with cushions ViewSonic Corporation Taking out the monitor by grasping the LCD panel.
PAGE 6
Place the monitor on a clean and soft foam pad. Placing the monitor on foreign objects.
PAGE 7
2. Specification Parameter Specification a-Si TFT Active Matrix Wide Color, Trans missive Mode, Normally LCD Type Black LCD Interface 1-Channel LVDS Resolution (Native) WXGA, 1366 x 768 Display Area 27” diagonal; 596.259 (H) x 335.232 (V) mm. Pixel Pitch 0.4365(H) × 0.4365(V) mm Viewing Angle H = +/- 88°, V = +/- 88° with CR≥20 (Typical) Contrast Ratio 1000:1 (Typ); 800:1 (Min) Brightness 550 nits (Typ.); 450 nits (Min) Response Time 8ms, (Typical), g-g Color Gamut NTSC 75% Typ Brightness Uniformity 1.
PAGE 8
2. Video Built-in A/D converter shall provide analog to digital converter for this product. Input Parameter Specification CVBS Characteristics: Video Amplitude Signal 0.7(min.)–1.1(max.) V DC Level Sync Pulse Typical. 0.3 Vp-p S-Video Characteristics: Y : 1.0Vp-p W / Neg. Sync (IN 75 Ω ) Video Amplitude Signal C : 0.285Vp-p (IN 75 Ω ) DC Level Sync Pulse Y, Cb,Cr Characteristics: Y:1.0Vp-p(IN 75 Ω) Video Amplitude Signal Pb:0.7 Vp-p(IN 75 Ω),Pr:0.
PAGE 9
Efficiency Shall not result in permanent failure of power supply (including blown fuse) Normal: 150 W (Max) // Stand by: < 3 W There shall be no visible interference between power supply, RF and video signals. This applies to all available RF channels and video modes. This product shall adhere to the compatibility and immunity specifications in FCC. Able to withstand an ANSI / IEEE C62.41 – 1980 2000V ring wave with no damage. Able to withstand 1.25X nominal Line Voltage for one cycle with no damage.
PAGE 10
Channel Add/Del. Parental RCU Key function Power Picture Sound TV MTS Sleep Info Mute 0 ~ 9, 100/Return Guide CH up/down Volume Up/Down/Left/Right arrows Fav.ch Fav.A/D Menu Input Freeze Zoom Wide Enter PIP/POP P.Pos P.size Swap P.input C.
PAGE 11
7. Mechanical The following table defines the mechanical specifications of this product for both chassis and cabinet. Parameter Specification Dimension W=808mm, H=628mm and D=243mm Net Weight 21.7kg(47.
PAGE 12
3. Front Panel Function Control Description Front View of the Product 1 2 3 4 7 5 6 8 1 Volume Down Decrease sound volume or adjust a highlighted control while in OSD menu. 2 Volume Up Increase sound volume or adjust a highlighted control while in OSD menu. 3 Menu Turn OSD menu ON/OFF. 4 CH Down Channel down when source is at TV or select a control while in OSD menu. 5 CH Up Channel up when source is at TV or select a control while in OSD menu. 6 ENTER To highlight a control in OSD menu.
PAGE 13
Rear View of the Product A B C D E F I H G A Analog TV input Connect to NTSC, PAL M/N TV source. B S-Video input Connect this port to the S-Video output of A/V device. C AV/ S-Video signal Audio input (left/right) Connect this port to the RCA audio output connectors of your A/V device. D YPbPr signal Audio input (left/right) Connect this port to the RCA audio output connectors of your A/V device. E YPbPr signal input Connect this port to the YPbPr output of A/V device.
PAGE 14
Remote Control ViewSonic Corporation 11 Confidential - Do Not Copy N3250w-1L
PAGE 15
ENGLISH Remote control button function as follow 1 POWER Power ON/OFF 2 MTS 3 INFO Select Mono, Stereo or SAP in TV 4 SLEEP Set TV Sleep timer 5 SOUND Select sound modes 6 0~9, 100/- number button Directly channel select 7 VOL+ and VOL- Adjust volume UP/DOWN 8 FAV.
PAGE 16
OSD Functions ADVANCED OPERATION — OSD MENU Video Menu — Adjusting the picture quality ENGLISH Video Menu is active in all but the VGA input source. • Contrast: To adjust contrast of video. (right: Max, left: Min.) • Brightness: To adjust luminance of video. (right: Max, left: Min.) • Color: To adjust color. (right: brilliant color, left: pale color.) • Tint: To adjust tint level. (right: greenish tone, left: reddish tone.) • Sharpness: To adjust picture sharpness. (right: sharper, left: softer.
PAGE 17
TV Menu — To set up for TV ENGLISH It is only active in TV source. • Tuner Mode: To select Cable or Air as the TV source. • Auto Scan: To auto scan the TV channels. Press ENTER to start auto scanning TV channels. Press ENTER again at any time to interrupt scanning. • TV: To select the TV channel to be skipped. Press ◄► to change channel. • Channel Add/Del.: Select Delete to skip the channel appointed, or select Add to restore the channel appointed.
PAGE 18
ENGLISH When you enter this control, the screen below will be displayed. The factory default of the password is “0000”. To enable parental control, input the password, press ▼ button to focus on OK key, and press ENTER. (select Cancel if you want to exit) After entering, the following screen will be shown. Channel Lock: To lock channels. Use ◄► to select the channel you want to lock, and then press ENTER to lock or unlock it.
PAGE 19
VGA Menu — To set up for computer ENGLISH It is only active in VGA sources. • Auto Adjust: Press ENTER to auto adjust picture’s horizontal position, vertical position, ﬁne tune and H-Size. • Contrast: To adjust contrast of the video. • Brightness: To adjust luminance of the video. • Fine Tune: To adjust the delay time of data and clock to reduce noise in picture. • Manual Clock: To adjust the horizontal pixel clock of the video. • H Position: To adjust the horizontal position of the picture.
PAGE 20
2. Use ◄► to select the sub-input source and press ENTER to conﬁrm. Note: To select the input source for main screen, press INPUT button. • SWAP: Press SWAP to exchange main screen to sub-screen, including video and sound. ENGLISH The function is available both in PIP and POP. • PIP Size Select: Press P.SIZE to select the size of sub-screen. The function only acts on PIP. • PIP Position Select: Press P.POS to select the position of sub-screen. The function only acts on PIP.
PAGE 21
4. Circuit Description A. Analog Switch and Video input. MT8202 is a highly integrated video and audio single chip processor for emerging HDTV-Ready LCD TV. It includes one 3D/2D TV Decoder recovering the best image from CVBS, and in addition, its analog input also support popular S-Video, Component, VGA video source. On-chip advanced motion adaptive de-interlacer (MDDitm) converts accordingly the interlace video into smooth non-flicking progressive motion pictures.
PAGE 22
C. HDMI. MT8293 is fully HDMI-compliant receiver that fits directly into home theater products such as LCD TVs, plasma TVs and HDTVs. The receiver is capable of supporting bandwidths up to 165 MHz and video resolutions up to 1080p and UXGA. The MT8293 supports the DVD-Audio standard, including 7.1- surround audio at 96kHz and stereo audio at 192kHz.
PAGE 23
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/DSDA to access MT8293 HDCP related register. HDMI Transmitter will pull high HDMI_PLUG_POWER (pin 18 in connector) when the cable is connected. LCD Controller will pull high HDMI_HPD (pin 19 in connector) to info the HDMI transmitter that the receiver is ready.
PAGE 24
5. Adjusting Procedure 1. Function Test 1.1. Product - 32” LCD TV 1.2. Test Equipment -PC signal generator: CHROMA 2525 CARD ,CHROMA 2327 or 2329,Pioneer DV-S969AVi. -TV and Video signal generator. -Color analyzer: MINOLTA CA110. -Power meter: CP-310A or CP-320A. -AC power supply transformer: 110V/120V ±20% 60Hz ±5%. -Digital ammeter 1.3.
PAGE 25
2.After adjusting, switch to FULL WHITE and check the value of each color. Preset color for N3250W-L x=0.283±0.015 y=0.298±0.015 3.Under the picture NTSC color bar of YPbPr source, select WHITE BALANCE and press ENTER, The color warm will auto adjust. The act of EHITE BALANCEL is completed when EHITE BALANCEL disappeared. 4.After adjusting, switch to FULL WHITE and check the value of each color. Preset color for N3250W-L x=0.283±0.015 y=0.298±0.015 1.4.3 Power Consumption Check ( VGA MODE ) A.
PAGE 26
You should do “All Mode Reset” again. Turn off the LCD TV by pressing “Power” button. TV Frequency Table: U.S.A Channel (TABLE 1) VIF 45.75 MHz, SIF 41.25 MHz (Unit：MHz) Ch. 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 31 32 33 34 35 36 37 38 39 40 41 42 Freq.range fp (picture) fs (sound) 59.75 55.25 54 – 60 65.75 61.25 60 – 66 71.75 67.25 66 – 72 81.75 77.25 76 – 82 87.75 83.25 82 – 88 179.75 175.25 174 – 180 185.75 181.25 180 – 186 191.75 187.25 186 – 192 197.75 193.
PAGE 27
U.S.A. CATV (TABLE 2) VIF 45.75 MHz, SIF 41.25 MHz Ch. 2 3 4 5A 5 6 A-5 A-4 A-3 A-2 A-1 A B C D E F G H I 7 8 9 10 11 12 13 J K L M N O P Q R S T U V W AA BB CC DD EE FF GG HH II 2 3 4 1 5 6 95 96 97 98 99 14 15 16 17 18 19 20 21 22 7 8 9 10 11 12 13 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 Freq.
PAGE 28
1.5. TV receiving test: 1.5.1 TV SIGNAL TEST ITEM CENTRALISM TRANSMITTING SIGNAL CHECK CONTENT SET CONTENT CHECK CHANNEL FREQUENCY (MHz) CONTENT ORDER PATTERN SOUND P/S(dB) 55.25 MONO SCOPE SWEEP TONE -10 ELECTRIC CHANNEL 2 ABNORMITY SOUND 83.25 COLOR BAR 400Hz -10 SOUND ,PICTURE CHANNEL 6 175.25 Full White (100 STEREO -10 STERO FUNCTION CHANNEL 7 IRE) 211.25 STAIR DUAL -10 SUB FUNCTION CHANNEL 13 471.25 MULTIBURST MONO -16 IMAGE AND SOUND CHANNEL 14 DISTURB 603.
PAGE 29
TIMING TABLE (FACTORY PRESET MODE) (TABLE 3) 1 2 3 4 TIMING 640*480@60HZ 640 *480@75HZ 800 *600@60HZ 800*600@75HZ Pixel Rate 25.175MHZ 31.500MHZ 40.000MHZ 49.500MHZ H TOTAL 31.778us 26.667us 26.400us 21.333us H DISPLAY 25.422us 20.317us 20.000us 16.162us H B-Porch 1.907us 3.810us 2.200us 3.232us H Width 3.813us 2.032us 3.200us 1.616us H Border 0.318us 0.000us 0.000us 0.000us V TOTAL 16.683ms 13.334ms 16.579ms 13.333ms V DISPLAY 15.253ms 12.800ms 15.840ms 12.
PAGE 30
TIMING TABLE (FACTORY PRESET MODE) (TABLE 3) 9 10 TIMING 1360 ×768 60HZ 1280 ×1024 60HZ Pixel Rate 85.5MHZ 108MHZ H TOTAL 20.959us 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 Width 0.126ms 0.047ms V Border 0.00ms 0.00ms H/V Sync +/+ +/+ Interlace No. No.
PAGE 31
2. VGA DDC Key In Procedure Note: 1. Every time after replacing the main board, you have to do the DDC key in. 2. If you find the DDC does not conform to the LCD TV, you have to do the DDC key in. 2.1 Equipment Needed - N3250W-L LCD TV DDC Card PC RS-232 cable Barcode Reader VGA Cable N3250W-L LCD TV RS-232 Cable DDC Card PC VGA Cable Barcode Reader 2.2 Setup Procedure 2.2.1 Connect VGA Card and DDC Card with RS-232 cable.
PAGE 32
2.2.2 Barcode Reader connects with keyboard and PC keyboard port. 2.2.3 Connect DDC Card and N3250W-L LCD TV with VGA Cable. (when key in DVI DDC information, use VGA transform to DVI port ) 2.2.4 Connect Power Cord to N3250W-L LCD TV. 2.3 DDC Key In Procedure 2.3.1 Run DDC.
PAGE 33
2.3.2 Choose model number then 2.3.3 Press “ENTER” key.
PAGE 34
2.3.4 Press “F4” key. 2.3.
PAGE 35
2.3.6 Press “ENTER” key, then the successful picture is as follows. “DDC DOWNLOED OK! 2.3.7 Exit program.
PAGE 36
3. HDMI DDC Key In Procedure 3.1 Equipment Needed - N3250W-L LCD TV PC RS-232 cable Barcode Reader HDMI Cable N3250W-L LCD TV RS-232 Cable PC HDMI Cable Barcode Reader 3.2 Setup Procedure 3.2.1Connect HDMI Card and DDC Card with RS-232 cable.
PAGE 37
3.2.2 Barcode Reader connects with keyboard and PC keyboard port. 3.2.3 Connect DDC Card and N3250W-L LCD TV with HDMI Cable. 3.2.4 Connect Power Cord to N3250W-L LCD TV. 3.3 DDC Key In Procedure 3.3.1 Run DDC.
PAGE 38
3.3.2 Choose model number then . 3.3.3 Press “ENTER” key.
PAGE 39
3.3.4 Input barcode 3.3.5 Press “ENTER” key, then the successful picture is as follows. “DDC DOWNLOED OK! 3.3.6 Exit program.
PAGE 40
4. Firmware Upgrade Procedure When you receive the returned LCD TV, please check whether the firmware version is the latest. If not, please do the following procedures to upgrade it to the latest version. 4.1 Equipment Needed - N3250W-L LCD TV - Fixture for Firmware Upgrade - VGA Cable - PC (Personal Computer) - Firmware Upgrade Program - One additional LCD TV for checking the program execution N3250W-L ISP FIXTURE PC 4.2 Installing the USB device driver. The USB driver will be upgraded if necessary.
PAGE 41
4.5.2 Select COM port. Depends on the COM port assigned in System Device Manager (Refer below right). 4.5.3 Select Baud Rate.
PAGE 42
4.5.4 Enable the USB Bridge. 4.5.5 Browsing the File to download.
PAGE 43
4.5.6 Press Upgrade to download file. Note : 1. The Baud Rate is auto setting if mismatch found between 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 unsupported Flash Type or fail to download.
PAGE 44
Packing For Shipping And Disassembly Procedure Packing For Shipping 1. Packing Procedure 1.1 Paste protection film to protect the LCD TV. (Figure 1) 1.2 Put the LCD TV in the PE bag and seal the bag. (Figure 2) Figure 1 Figure 2 1.3 Put the cushions on the LCD TV. (Figure 3) 1.4 Place the LCD TV into the carton and then Put the other cushions on the LCD TV,put all the accessories into the carton. At last, close the carton and seal it with tape. (Figure 4) 1.Power Cord 2.VGA Cable 3.RF Cable 4.
PAGE 45
PACKING PART LIST ( N3250w-1L ) ViewSonic Model Number: VS11335-1L Rev: 1a Item ViewSonic P/N DESCRIPTION STATUS 1 2 P-00005968 Polyethy Bag Active 3 P-00004461 Foam-EPE (Right) Active 4 P-00004462 Foam-EPE (Left) Active 5 P-00004463 Foam-EPE (Down) Active 6 N/A N/A N/A 7 DC-00006367 User Guide Active 8 DC-00006620 Quick Start Guide (Guarant Card) Active 9 A-00005362 10 CB-00003425 Cable RCA 3P(Y/R/W) 2562#26 1.8M BLK Active 11 A-VC-0101-0386 Video Cable-Cable ,D15/D15 20276(3+6) 1.
PAGE 46
Disassembly Procedure 1. Disassembly of Stand and Dust Cover from LCD TV. 1.1 Unscrew 4 screws that secure Stand Unit and detach Dust Cover from the LCD TV.
PAGE 47
2. Disassembly of Rear Cover. 2.1 Unscrew 16 screws to remove Rear Cover. Rear Cover 3. Disassembly of Main Board,Power Board,IR Board,Speaker,Front Cover and Panel Unit. 3.1 Unscrew 14 screws to remove Shield Plate.
PAGE 48
3.2. Unscrew 9 screws to remove Dust Cover and METAL FITTG.
PAGE 49
3.3. Unscrew 5 screws and disconnect the wires to remove Main Board. Main Board 3.4. Unscrew 4 screws and disconnect the wires to remove Power Board.
PAGE 50
3.5. Unscrew 3 screws and disconnect the wires to remove KeyPad Board. 3.6. Unscrew 8 screws to remove Speaker.
PAGE 51
3.7. Unscrew 8 screws to remove Bracket.Fix. BRACKET,FIX 3.8. Unscrew 4 screws to remove IR Board.
PAGE 52
3.9. Unscrew 4 screws to remove Front Cover. Front Cover 3.10. Lay Panel Unit facedown and unscrew 8 screws on its right,left,up and down sides, to remove Panel Bracket.
PAGE 53
3.11.Unscrew 8 screws to remove Bracket.and Panel Unit.
PAGE 54
6. Trouble Shooting Flow Chart 6.1.
PAGE 55
6.2. NO POWER No Connect the wire START Chcek P100 5V,12V No Check Wire Connection on power board is OK? Yes Replace Power Board Yes No Check 3.3V is on C113? Replace I101 Yes No 1.
PAGE 56
Check Video wave form is on I112 Pin12 ? YPb Pr No Replace I112 No Replace L221,R172 R173,C332,or C334 Check L224,R197,C340 is OK? Yes Yes Check L215,R501,R170,C331 is OK? Check L221,R172,R173,C332,C33 4 is OK? S-VIDEO No Yes Replace L215.R501,R170 or C331 AV Yes Check L226,R203,C335 is OK? No Replace L224,R197 or C340 Replace L226,R203, or C335 53 Check I106 has output signal at Pin11~16 and Pin19~22 of P114 ? No No Confidential - Do Not Copy NTSC TV N3250w-1L 6.3.
PAGE 57
HDMI Check HDMI Cable is well connected ? No Connect the cable Yes Check 27MHz is on Pin4 of I115? No Check I106 Yes Yes Check I114 is defective Replace I114 No Check I115 has output signal at RP25~RP30? No Replace I115 Yes Check I106 has output signal at Pin11~16 and Pin19~22 of P114 ? No Replace I106 Yes Check the LVDS wire from P114 to panel is OK? No Replace LVDS Wire Yes Check inverter wire from power board to panel is OK? No Replace Inverter Wire Yes Replace Panel ViewSonic Corp
PAGE 58
7.
PAGE 59
8. Schematic Diagrams 8.1. DC Input HOLE/GND H101 5VSB 2 3 4 5 9 8 7 6 H100 9 8 7 6 PWM1 4.7K R100 47K 1 B R105 SOT C 3 100K 2 E 23 G S S S D D D D 5 6 7 8 C102 220U/16V MMBT3904 C779 1U 9 8 7 6 R106 1K 1 2 3 4 5 9 8 7 6 AP9435M C103 47U/16V HOLE/GND 2 3 4 5 H103 9 8 7 6 1 R107 R108 R109 PWM0 Q102 1 B 4.7K HOLE/GND 2 3 4 5 9 8 7 6 1 (NC)47K C101 0.
PAGE 60
8.2. DC TO DC SB33B Power ON alive source + L219 2 C112 0.1U C0603 OCSET EN AP1510 R121/0805 30uH D152 0.7m/m R517 3.65K 1% SR54 VSS VSS 3 SB33A 6 5 2 Output Output FB 1 L103 SB18 ASB33A C781 0.1U C0603 C782 0.1U C0603 + C113 100U/16V CE050080 L104 C111 + + IN 4 OUT ADJ AZ1117/adj C117 47U/16V SB18A R60/0603 SB18A I102 C114 0.1U 47U/16V R121/0603 R518 1.15K 1% 7 8 R516 + C110 220U/16V 20K CE050080 VCC C780 0.1U C0603 SB33A L102 1 4 R515 3.9K C109 0.
PAGE 61
8.3.
PAGE 62
8.4. MT8202 Analog Decoupling NORMAL ANALOG POWER STANDBY ANALOG POWER XTALVDD XTALVDD 3 ADCVDD 3 AVICM 3 PWM2VREF 3 DACFS 3 LVDDA 3 L113 R60/0603 L114 XTALVDD ADCVDD AVICM PWM2VREF AVICM ASB18A ASB18A R121/0603 C226 10U/50V C228 1U C229 4.7U C230 0.1U C0603 LVDS_GND C227 10U/50V + C231 1U C232 4.7U C233 0.
PAGE 63
8.5. MT8202 DDR & Flash DV25B A_DQS[0..3] A_RA[0..11] A_BA[0..1] A_DQM[0..1] A_DQ[0..31] A_DQS[0..3] A_RA[0..11] A_BA[0..1] A_DQM[0..1] A_DQ[0..
PAGE 64
8.6. MT8202 Digital Decoupling MT8202 DIGITAL POWER & DECOUPLING SB33A SB18A SB18A DV18A C286 0.1U C293 0.1U C0603 C287 0.1U C294 0.01U C0603 C288 3300P C0603 DV33A ViewSonic Corporation C300 100U/16V C304 0.1U 61 C290 0.1U C0603 C291 0.1U C0603 C292 0.1U C0603 C296 3300P C0603 C297 3300P C0603 C298 3300P C0603 C295 3300P C0603 5VSB + C289 0.1U C0603 Confidential - Do Not Copy C305 0.1U C306 0.1U N3250w-1L C301 0.1U C0603 C302 0.1U C0603 C303 0.
PAGE 65
8.7. Audio/Video in Circuit CVBS0 CVBS1 SY0 SC0 Y0+ Y0PB0+ PB0PR0+ PR0SOY0 MPX1 MPX2 CVBS0 CVBS1 SY0 SC0 Y0+ Y0PB0+ PB0PR0+ PR0SOY0 3 3 3 3 3 3 3 3 3 3 3 MPX1 3 MPX2 3 THIS PAGE NEARLY IC R170 R171 C331 AVCVBS0 0 0.047U C333 330P R172 VFE_GND1 AVCVBS1 C335 R174 TO MT8202 AVY0P CVBS1 0.047U NC AVSOY0 CVBS0 R173 C332 4.7n SOY0 68 C334 0.01U Y0+ 0 C336 15P C337 330P AVY0N R175 100 C338 0.01U Y0- AVPB0P R176 68 C339 0.
PAGE 66
8.8. NTSC Tuner ADDRESS TUNER VCC IF TUNER L237 L213 VS_TUNER FQ1216 : PAL FQ1236 /F : NTSC C2 86 2mH SG20 + + C770 (NC)470U/16V C769 1000U/16V VCC C771 1U C772 0.1U C773 3300P I112 R155 10K L214 TH3 GND3 TH4 GND4 Q104 2 SCL 3 2N7002 N-MOSFET DV33B VS_IF 1 CVBS VS_IF AF /MPX SCL_V50 12 13 14 TH1 TH2 1 2 3 4 5 6 7 8 9 10 11 GND1 GND2 NC NC VS_TUNER SCL SDA AS NC NC AF-R AF-L 2nd SIF OUT FQ1236/F H-5 SG20 + C774 1000U/16V C775 1U C776 0.
PAGE 67
8.9. Analog Input Interface 0 YPBPR0L_IN AVSOY0 2 R185 L221 Y0_IN D100 YPBPR/AV Input. D101 AVY0P R80/0603 200mA (NC)5.6V R187 100K 1 R188 75 C354 0.01U 10p P101 Y_GND 4 PR0_IN 3 PB0_IN 2 Y0_IN 1 AV0_IN YPBPR0R_IN R533 0 2 6 AVY0N D102 (NC)5.6V L222 PB0_IN C355 0.
PAGE 68
8.10. MT8293- HDMI Input VI[0..23] VI[0..23] AVCC 3,11 DV33B L140 3,11 3,11 100U/16V I113 + C362 ADJ AIC117-1.8V/SOT223 DATA1DATA0+ DATA0CLOCK+ L143 3 3 8293MCLK 8293BCLK 8293LRCK 8293SD0 11 11 11 11 HDMISD1 HDMISD2 HDMISD3 3 3 3 8293MCLK 8293BCLK 8293LRCK 8293SD0 10 10 10 10 DDC_SCL R206 DDC_SDA R207 C368 R121/0603 C369 AVCC PLUGPWR C370 1000P 0.1U 10U/50V C371 C372 C373 C374 C375 C376 R208 0.1U 1000P 0.1U 1000P 0.1U 1000P 1K L144 HDMICAB REGVCC 0.
PAGE 69
8.11. VGA source Input VGASOG VGASOG VGAHSYNC_1 VGAVSYNC_1 VGAHSYNC_1 3 VGAVSYNC_1 3 VGAL_IN VGAR_IN GNDA NEARLY IC VGA IN L229 RED 3 VGAL_IN VGAR_IN VFE_GND NEARLY VGA CON 3 3 3 3 3 3 20 20 VFE_GND 2,3,5,8 GNDA 3,5,8,22 DLSW2 11 VGASDA_IN 12 HSYNC_1 13 VSYNC_1 14 VGASCL_IN 15 C608 0.01U RED+ R324 100 C610 0.01U RED- R325 0 C611 4.7n VGASOG R327 68 C612 0.01U GREEN+ R329 100 C614 0.01U GREEN- R335 68 C615 0.01U BLUE+ 100 C619 0.
PAGE 70
8.12.
PAGE 71
8.13. Audio ADC AUDIO ADC L179 + ADCVL ADCVA VCC R121/0603 ADCVA C634 10U/50V + C635 10U/50V ADCVD L180 R121/0603 DV33B L181 ADCVD C637 0.1U C638 1U C639 0.1U + ADCVL R121/0603 C636 100U/16V ADCVL C640 1U R367 10K C641 0.1U R492 R368 10K ADCM0 ADCRST_1 R370 (NC)10K ADCM1 R371 (NC)10K R372 (NC)10K ADCVA C642 0.1U C643 0.1U R373 634 1% C644 470P ADCVA ADCVL 4 R374 100K + 10K C646 1 4.7U/50V 3 R378 90.
PAGE 72
8.14. Audio RCA Output TO ERAPHONE OUTPUT 3 3 MTK modify R415 BYPASS AUDIO OUTPUT 20K OP1VREF ADD R406 C678 150P R121/0805 R419 0 C679 10U/50V R420 10K R421 5.1K + AR 4 L211 47K R524 + VIDEO_OUT VIDEO_OUT 3 C669 220U/16V 47K + C681 820P 10U/50V 3 I139A 1 OP1VREF C665 2 OP1VREF AUDIO_OUT2_R NJM4558 OPA 8 12V OPA1V120 4 OPA1V120 + AL AR - AL AR I139B MTK modify R424 C685 150P R426 0 C686 10U/50V R427 10K R428 5.
PAGE 73
8.15. Audio Amp. L182 R121/0603 L183 R121/0603 RA L202 15uH LA 12V L200 VCC R121/0805 VDDSUB C675 0.1U C0603 L201 C676 0.1U C0603 C677 0.1U C0603 R121/0805 VDDLR C683 0.1U C0603 L212 3_3AMP C682 0.1U R121/0805 + C749 C0603 470U/16V L0805 CE050080 + C671 47U/16V CE0250050 I148 C662 0.1U C684 0.1U C0603 C680 0.1U C0603 C666 0.1U + C750 C0603 470U/16V CE050080 IN 4 OUT C672 C674 + 3 2 0.1U R394 R402 10 10 C658 1n C0603 C660 1n C0603 C659 1n C0603 C744 1n C0603 C661 0.
PAGE 74
8.16. IR & Keypad Interface SB33B 5VSB UP3_0 UP3_1 GPIO10 GPIO11 GPIO12 GPIO13 GPIO14 GPIO15 GPIO16 IRRCVR1 R458 R459 330 R460 330 Q120 R462 MMBT3906 4.7K 1 R461 1K 2 GPIO12 R463 4.7K Q121 MMBT3906 C726 C727 47U/16V 0.1U 1 3 5VSB 3 2 UP3_1 47 R465 R466 R467 R468 R469 R470 IRRCVR1 LED_G LED_R C309 470P C728 C729 C730 C731 C732 C733 C734 UP3_0 GPIO16 GPIO15 GPIO13 GPIO11 GPIO14 GPIO10 71 Confidential - Do Not Copy P113 1 2 3 4 5 6 7 7P_2mm 0.1U 0.1U 0.1U 0.1U 0.1U 0.1U 0.
PAGE 75
8.17. Panel LVDS interface PANELVCC P803 GPIO2 CLK1+ CLK1- GPIO2 3 CLK1+ CLK1- 3 3 AP[0..3] AP[0..3] 3 AN[0..3] AN[0..3] 3 LVDS_GND LVDS_GND AP3 AN3 CLK1+ CLK1AP2 AN2 AP1 AN1 AP0 AN0 2,3,5 LVDS_GND 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 CON 2X15 2mm 12V CHANGE 5VSB L195 R121/0805 L196 (NC)R121/0805 C740 R480 47K 0.
PAGE 76
8.18. System EEPROM SB33B RESET# Circuit SCL SDA R425 4.7K R503 4.7K RXD P115 TXD 1 2 3 4 5 6 PCRXD PCTXD TP72 SCL SDA 7,10 7,10 PCTXD PCRXD PCTXD PCRXD 19 19 DLSW1 DLSW2 DLSW1 DLSW2 19 19 TXD RXD TXD RXD 3 3 R482 (NC)R DLSW1 DLSW2 SB33 R483 10K + C741 10U/50V URST_1 URST_1 GPIO4 (NC)6x1 W/HOUSING 6P200VM NEW USB DOWNLOAD I/F Q123 3 C SOT R484 B 1 URST_1 GPIO4 3 3 DTVU0TX DTVU0RX DTVU0TX DTVU0RX 11 11 MMBT3904 C791 SCL0 SDA0 SCL0 SDA0 11 11 0.
PAGE 77
8.
PAGE 78
6 7 1 2 1 1 2 4 1 3 2 2 2 1 4 3 3 3 1 2 3 3 1 4 4 2 3 11 3 1 2 8.
PAGE 79
9. PCB Layout Diagrams 9.1.
PAGE 80
9.2.
PAGE 81
9.3.
PAGE 82
9.4.
PAGE 83
9.5.
PAGE 84
9.6.
PAGE 85
10.
PAGE 86
ViewSonic Corporation 83 Confidential - Do Not Copy N3250w-1L
PAGE 87
EXPLODED PARTS LIST (N3250w-1L) ViewSonic Model Number: VS11335-1L Rev: 1a Serial No.
PAGE 88
11. Recommend Spare Parts List RECOMMENDED SPARE PARTS LIST (N3250w-1L) ViewSonic Model Number: VS11335-1L Serial No.
PAGE 89
BOM LIST (N3250w-1L) ViewSonic Model Number: VS11335-1L Rev: 1e Serial No.
PAGE 90
Item 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 ViewSonic P/N N/A E-C-0404-4424 N/A E-C-0404-4424 N/A E-C-0404-4424 N/A E-C-0404-4424 E-C-0404-4424 N/A E-C-0404-4424 N/A E-C-0404-4424 N/A N/A N/A E-00003865 N/A E-00003865 N/A N/A N/A N/A E-C-0404-4425 N/A E-
PAGE 91
Item 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 ViewSonic P/N N/A N/A N/A N/A N/A N/A E-D-0403-1779 E-D-0403-2808 E-D-0403-1779 E-D-0403-2808 E-D-0403-1779 E-D-0403-2808 E-D-0403-1779 E-D-0403-2808 E-D-0403-1779 E-D-0403-2808 E-D-0403
PAGE 92
Item 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 ViewSonic P/N N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
PAGE 93
Item 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 ViewSonic P/N E-Q-0402-1608 E-Q-0402-1087 E-Q-0402-1624 E-Q-0402-1608 E-Q-0402-1087 E-Q-0402-1624 E-Q-0402-1608 E-Q-0402-1087 E-Q-0402-1607 N/A E-Q-0402-1607 E-Q-0402-1607 N/A E-Q-0402-1
PAGE 94
Item 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 ViewSonic P/N E-R-0405-6603 E-R-0405-7003 E-R-0405-6600 E-R-0405-7003 E-R-0405-6603 E-R-0405-7003 E-R-0405-6603 E-R-0405-7003 E-R-0405-7003 E-R-0405-6602 E-R-0405-7003 E-R-0405-6602 E-R-
PAGE 95
Item 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 ViewSonic P/N E-00003527 E-00003527 E-00003527 E-00003527 E-R-0405-6411 E-00003527 E-00003527 E-00003527 E-00003527 E-00003527 E-R-0405-6411 E-00003527 E-00003527 E-00003527 E-00003527 E
PAGE 96
Item 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 ViewSonic P/N E-00003527 N/A E-R-0405-6411 E-R-0405-6411 E-R-0405-6411 E-R-0405-6999 E-R-0405-6411 E-00003527 E-00003527 E-R-0405-6419 E-R-0405-6600 E-R-0405-6998 E-R-0405-7003 E-R-0405-
PAGE 97
Item 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 ViewSonic P/N N/A N/A N/A N/A E-00000999 E-00000999 N/A N/A N/A N/A N/A N/A N/A E-00000999 E-00000999 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A E-00000999 N/A N/A E-00000999 E-00000999
PAGE 98
Item 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 ViewSonic P/N N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A E-00003865 N
PAGE 99
Item 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 ViewSonic P/N N/A N/A N/A N/A N/A N/A E-C-0404-4424 E-C-0404-4424 E-C-0404-4424 E-C-0404-4424 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
PAGE 100
Item 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 ViewSonic P/N E-D-0403-1779 E-D-0403-2808 E-D-0403-1779 E-D-0403-2808 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A E-R-0405
PAGE 101
Item 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 ViewSonic P/N N/A N/A N/A N/A M-SW-0815-0182 M-SW-0815-0182 M-SW-0815-0182 M-SW-0815-0182 M-SW-0815-0182 M-SW-0815-0182 N/A N/A N/A M-MS-0808-6354 M-S
PAGE 102
Item 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 ViewSonic P/N M-SCW-0824-6944 N/A N/A N/A N/A N/A A-00006621 A-00005362 A-VC-0101-0386 CB-00005507 CB-00003425 DC-00006367 DC-00006620 P-00004497 N/A P-00006630 N/A N/A M-LB-0813-0856 M-LB-0813-0959 P-00004461 P-00004462 P-00004463 N/A P-00005968 P-00006599 Ref.
PAGE 103
Reader’s Response* Dear Readers: Thank you in advance for your feedback on our Service Manual, which allows continuous improvement of our products. We would appreciate your completion of the Assessment Matrix below, for return to ViewSonic Corporation. Assessment A. What do you think about the content of this Service Manual? Unit Excellent Good Fair Bad 1. Precautions and Safety Notices 2. Specification 3. Front Panel Function Control Description 4. Circuit Description 5. Adjustment Procedure 6.