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Service Manual
ViewSonic N3252w-1M
Model No. VS11335-1M 32" LCD TV
(N3252w-1M_SM Rev.1b_Aug.2008)
ViewSonic® 381 Brea Canyon Road, Walnut, California 91789 USA - (800) 888-8583
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. Disclaimer ViewSonic makes no representations or warranties, either expressed or implied, with respect 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 Corporation. ViewSonic is a registered trademark of ViewSonic Corporation. All other trademarks used within this document are the property of their respective owners.
Revision History
Revision SM Editing Date ECR Number Description of Changes Editor
1a 1b
06/01/06 08/18/08
Initial Release Add schematics of power / supply board and menu / power lock feature
Sophia Kao Sophia Kao
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TABLE OF CONTENTS
1. Precautions and Safety Notices................................................................. 1 2. Specification................................................................................................. 4 3. Front Panel Function Control Description................................................ 9 4. Circuit Description.......................................................................................24 5. Adjustment Procedure ................................................................................28 6. Trouble Shooting Flow Chart................................................................ .....59 7. Block Diagram .............................................................................................63 8. Schematic Diagrams....................................................................................64 9. PCB Layout Diagrams .................................................................................92 10. Exploded Diagram And Exploded Parts List...........................................98 11. Recommend Spare Parts List...................................................................101
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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. Do not touch the LCD panel surface with sharp or hard objects. Do not place heavy objects on the LCD display, video cable, or power cord. Do not use abrasive cleaners, waxes or solvents for your cleaning. Do not operate the product under the following conditions: - Extremely hot, cold or humid environment. - Areas susceptible to excessive dust and dirt. - Near any appliance generating a strong magnetic field. - Place in direct sunlight.
2. Caution No modification of any circuit should be attempted. Service work should only be performed after you are thoroughly familiar with all of the following safety checks and servicing guidelines. 3. Safety Check Care should be taken while servicing this LCD display. Because of the high voltage used in the inverter circuit, the voltage is exposed in such areas as the associated transformer circuits. 4. Power Supply Requirements The external AC power operating range shall be from 90 to 264Vac 5. LCD Module Handling Precautions 5.1. Handling Precautions (1) Since front polarizer is easily damaged, pay attention not to scratch it. (2) Be sure to turn off power supply when inserting or disconnecting 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. (5) Since the panel is made of glass, it may break or crack if dropped or bumped on hard surface. (6) Since CMOS LSI is used in this module, take care of static electricity and insure human earth when handling. (7) Do not open nor modify the Module Assembly. (8) Do not press the reflector sheet at the back of the module to any directions. (9) In case if a Module has to be put back into the packing container slot after once it was taken out from the container, do not press the center of the CCFL Reflector edge. Instead, press at the far ends of the CFL Reflector edge softly. Otherwise the TFT Module may be damaged. (10) At the insertion or removal of the Signal Interface Connector, be sure not to rotate nor tilt the Interface Connector of the TFT Module. (11) After installation of the TFT Module into an enclosure (LCD monitor housing, for example), do not twist nor bend the TFT Module even momentary. At designing the enclosure, it should be taken into consideration that no bending/twisting forces are applied to the TFT Module from outside. Otherwise the TFT Module may be damaged. (12) Cold cathode fluorescent lamp in LCD contains a small amount of mercury. Please follow local ordinances or regulations for disposal. (13) Small amount of materials having no flammability grade is used in the LCD module. The LCD module should be supplied by power complied with requirements of Limited Power Source (IEC60950 or UL1950), or be applied exemption.
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(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. 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
Taking out the monitor by grasping the LCD panel. That may cause "Mura"
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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"
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2. Specification
Specification a-Si TFT Active Matrix Wide Color, Transmissive 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 CR20 (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 1.3 (Max), measured per panel spec. Chromaticity (CIE1931) White-x:0.285,White-y:0.293 (Standard Mode Only) Colors 16.7M (8-bit) Surface Treatment Hard coating (3H) Backlight 14 CCFLs (Cold cathode Fluorescent Lamp) Refer to the panel acceptance criteria specification. Note: Intermittent and/or Display Pattern defects which result in Panel Acceptance further bright or dark dots will be counted individually against the above specification. VS Standard: a.) No Visible Streaking, Sag or Smearing artifacts when driven by the specified video cards (see 7.1 General Test Equipment) in the Front Screen Artifacts primary mode (VGA at 60 Hz) and after user adjustment b.) No image drift or lose fine-tune settings due to panel temperature change Note: Panel performance characteristics " MUST BE" met in all display modes/inputs at standard test conditions. Parameter
1.
RF Tuner RF tuner of this product shall be provided by" Philips FQ1236/FH-5" and "Samsung DTVS203CH201M" for NTSC/ATSC. The following table defines this tuner specification. Parameter Specification RF Input Level 45 ~ 85dBµV NTSC: 55.25 to 801.25 MHz, 2-69 Channels for RF Tuning Range Off-Air and 2-125 Channels for CATV RF Tuner Sensitivity (S/N Ratio at un-weight) 45 dB (min.) Channel Bandwidth NTSC/ATSC: 6 MHz Maximum CVBS Characteristics: 0.7(min.)1.1(max.) V Video Amplitude Signal DC Level Sync Pulse Typical. 0.35 V Audio Characteristics: AF Output Level Measured via LP 20 kHz Typical. 0.35Vrms Filter, RMS Decoder, 75us De-emphasis THD 10% (max.) S/N 44 dB (min.) Compatible system TUNER NTSC/ATSC Compatible system AV NTSC M
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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 ) Video Amplitude Signal C : 0.285Vp-p (IN 75 ) DC Level Sync Pulse Y, Cb,Cr Characteristics: Y:1.0Vp-p(IN 75 ) Video Amplitude Signal Pb:0.7 Vp-p(IN 75 ),Pr:0.7 Vp-p(IN 75 ) DC Level Sync Pulse Video Bandwidth NTSC: 6 MHz Maximum HDMI Characteristics Panel Link T.M.D.S HDMI-1.1 Analog VGA RGB Characteristics: Signal Type TTL, Separate Sync, with 4.7K pull-down resistors Sync Type 1250mv Max without damage to the product, 0-700 mv Full Input Signal Rating Range Sync Level: 2.5-5.25 V Frequency Range Horizontal: 30-80K Hz, Vertical: 50-75 Hz Pixel Color 16 M
3.
Audio Audio amp of this product shall be provided by "Advanic" with a Model Number of AD8256 , "MTK" MT8202 for N2751w-M and N3252w-M 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. Parameter Specification Phone Jack out Tuner Input Base band Input Speaker Power Output Max 10 W x 2 at 10% T.H.D 10W x 2 at 10% T.H.D. Rating Distortion Distortion main spk :3 + 3 main spk :3 + 3 Speaker Impedance Treble spk :5.2 Treble spk :5.2 500 mV rms (Typ) Line In Per Tuner Spec 1.6 V rms (Max) Impedance: 600 ohms 500 mVrms +/- 10% 500 mVrms +/- 10% @1K Hz tone (with +/-25k Hz @1K Hz tone (with +/-25k Hz Line Out deviation at input, volume deviation at input, volume with non-attenuation and with non-attenuation and loading with 47k Ohm) loading with 47k Ohm) Flatness of Amplitude Response +/- 3 db (at 1KHz @1W) +/- 3 db (at 1KHz @1W) (100Hz ~ 10KHz) Total Harmonic Distortion 2% 1% (1KHz @1W) Signal to Noise (1KHz @1W) 30 dB (40Hz to 15KHz) 40dB(400Hz to 20 kHz)
4.
Electrical The following table defines the electrical specification of this product. ELECTRICAL SPECIFICATION Power Input Voltage Range 100-240VAC +/- 10% Wide Range Input Frequency Range Input Current Power Supply Inrush 47-63 Hz 3.0A @ 115VAC // 1.5A @ 230VAC Max in < 150A (with fully loaded power supply) at 230Vac Shall not result in permanent failure of power supply
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(including blown fuse) Power Consumption: Normal Interference with RF and Video Electromagnetic Compatibility Power Supply Transient Immunity (Supply Transients and Outage) Surge Immunity Test Power Supply Missing Cycle Immunity Power Supply Acoustics Efficiency Leakage Current Power Saving(DPMS) Recovery Time Power Factor Correction 5. 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. Function properly without reset or visible screen artifact when 1/3 cycle of AC Power is randomly missing. Power supply shall not produce any audible 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. >= 80% @ full load, nominal line <0.5mA @ 240VAC N/A < 3 sec. Compliant with EN61000-3-2
Firmware & OSD The product firmware of VS11257-1M / VS11335-1M shall have a firmware version of V:P01. Any changes/revisions afterward shall also be pre-approved by ViewSonic in written. For VS11257-1M / VS11335-1M, its firmware shall have a built-in frequency table for NTSC/ATSC off-air TV/CATV, Closed-Caption, and with MTS implementation. All audio/video and other output adjustments shall be performed by using an On Screen Display (OSD) via a Remote Control Unit (RCU) adjustments. The following tables list the OSD functions supported by VS11257-1M / VS11335-1M.
OSD Table for VS11257-1M / VS11335-1M OSD Brightness Adjust the Black levels Contrast Adjust the White levels Sharpness Adjust the Sharpness levels Color Adjust the Color levels Tint Adjust the Tint levels Color Temperature Selections on Normal, Warm, user, Cold Back Light Adjust the Back Light levels Aspect ratio Selections the Image Size on Full, Wide1, Wide2, Wide3, 4:3, 16:9, No scale, Normal Language Selections English, Spanish , French By area have some difference OSD Timeout Set OSD disappearing time Memory recall Set user settings to factory preset value Treble Adjust the Hi Frequency levels Bass Adjust the Low Frequency levels Balance Adjust the Spk output levels Audio out Audio signal output On or Off Surround Surround sound effect On or Off Auto Scan TV program Auto Search Tuner Mode Selections TV sources to Air or Cable Channel Edit TV channel name edit
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Channel Add/Del. Parental RCU Key function Power Picture Sound TV/DTV 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.C V-chip 6.
TV channel Add or Delete TV program controlled by parents via password setting Soft power on or off Picture effect selections on Cinema, Sport, Vivid, Hi-bright, and User Sound effect selections on Rock, POP, Live, Dance, Techno, Classic, Soft, and User Swap analog TV (NTSC) and DTV (ATSC). Swap to TV when in other source Selection on Mono, Stereo and Sap sound Set TV Power off time Display current source input information Mute On or Off sound Direct channel key number Return to last channel Electric program guide on Digital TV Adjust channel up or channel down Adjust the Volume levels Select or adjust the function of OSD Switch to favorite channel Add or Del favorite channel Turn On or Off OSD main menu or exit current menu Selections Input Source To freeze the current image Enlarge or shrink current image on the screen Adjust image size on Full, Wide1, Wide2, Wide3, 4:3, 16:9, No scale, Normal Confirm the selection Toggle to select PIP or POP function Adjust picture position of sub source during in PIP Adjust image size of sub source during in PIP Switch between main screen and sub screen during in PIP or POP Sub source selection during in PIP or POP Displaying captions during closed caption source and closed caption mode select Set V-chip rating
Remote Control Unit (RCU) An IR remote control unit shall accompany this product along with battery. In addition, this remote control unit shall have an operational distance of 5 meters and an operational angle of 15 degrees for both horizontal and vertical. Parameter Specification Type IR; Made by Bontech Electronics Co., Ltd. Off axis ± 15° 5M Range On axis: 7M Life Testing 100,000 cycle operations at a rate of 20~30 cycle / minute without load (with (Buttons) battery) Painting Color - PANTONE 427C (Black for front bezel & back cover) Power Key - PANTONE 032C (RED) Key Pads PANTONE 11C & PANTONE 5C(Cool Gray) Color Texts Printed on Front Cover and Key Pads - PANTONE 427C, PANTONE 433C(Black)
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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(47.7 ib) Chassis Plastic Material ABS (ABS HB / ABS VO / PC+ABS) External Plastic Chassis Plastic Chassis, Cover, Stand, Lens and Button Components Internal Plastic Cabinet N/A Components Exterior Chassis Color "Black" Pantone 4001 Chassis Component's Color N/A (Only silver color on chassis) Difference Chassis Color Drift Due to The color drift due to UL-Light shall be less than 10 "Delta UV-Light E" in the 1976 CIE L*a*b color space. Testing shall be performed according to the requirements of ASTM Test Method D4459-93. Chassis Texture Front Bezel:N/A ; Back Cover:MT-11020 Molded Plastic Workmanship shall be inspected according to ViewSonic Molded Plastic Parts Specification, VSCMPPSPEC001V1.2. Screen Printed Parts, Bird Logo Artwork shall be provided and confirmed by ViewSonic. Recess 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. Wall- Mount 400mmx200mm VESA high hole (n=6),pattren 6mm,1.0 pitch x 10mm long screw mounting kit not imcluded. (Figure 7)
Sample
Sample of textured color chips, plastic material specification, and Material Safety Data Sheets shall be submitted to ViewSonic prior to Mass Production Release. In addition, all exterior surfaces shall have uniform texture/color. The maximum acceptable gap between the buckets to bezel plastic pieces shall be within 1.5 mm. The maximum acceptable gap between LCD panel and bezel shall be within 2.5 mm.
8. Environmental Operating Temperature Storage Temperature Operating Relative Humidity Storage Relative Humidity Operating Altitude Storage Altitude
0°C to +40°C -20°C to +60°C 65% non-condensing 85% non-condensing 0 to +3,000 meters above sea level 0 to +12,000 meters above sea level
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3. Front Panel Function Control Description
Front View of the Product
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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/DTV or select a control while in OSD menu. 5 CH Up Channel up when source is at TV/DTV or select a control while in OSD menu. 6 ENTER To highlight a control in OSD menu. 7 Power ON/OFF button 8 Power LED Indicator / Remote Control Receiver
Manufactured under license from Dolby Laboratories. Dolby and the double-D symbol are trademarks of Dolby Laboratories. (Only for DTV source in this model.) Note: 1. Press VOL+ and MENU buttons at the same time to lock power button, and press VOL+ and MENU buttons again to unlock it. 2. Press VOL- and VOL+ buttons at the same time to lock OSD menu, and press VOL- and VOL+ buttons again to unlock it.
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Rear View of the Product
A B C D E F G
I H
A Analog TV input Connect to NTSC TV source. B Digital TV input Connect to ATSC TV source. C S-Video input Connect this port to the S-Video output of A/V device. D AV/ S-Video signal Audio input (left/right) Connect this port to the RCA audio output connectors of your A/V device. E YPbPr signal Audio input (left/right) Connect this port to the RCA audio output connectors of your A/V device. F YPbPr signal input Connect this port to the YPbPr output of A/V device. G Composite Video input Connect this port to the composite video output of A/V device. H Audio output Connect this port to your A/V device with audio in (RCA) connectors or to audio amplifier. I PC Audio input Connect this port to PC line out jack. VGA signal input Connect this port to the VGA output of your PC. HDMI Input Terminal Connect this port to the HDMI output of A/V device. SPDIF Optical output Connect this port to the SPDIF input of A/V device. Headphone Jack Connect this port to your headphone. Power (AC input) Using power cord provided, connect to a power source.
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Remote Control
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Remote control button function as follow
1 POWER 2 MTS 3 INFO 4 SLEEP Power ON/OFF Select Mono, Stereo or SAP in TV / Select audio language in DTV Display current information Set TV Sleep timer Select sound modes Directly channel select Adjust volume UP/DOWN Show electronic program guide (EPG) To skip or restore Favorite Channels
ENGLISH
5 SOUND 6 0~9, 100/- number button 7 VOL+ and VOL8 GUIDE 9 FAV.A/D
10 UP/ DOWN /LEFT/ RIGHT/ UP/ DOWN/ LEFT/ RIGHT: Navigate and adjust OSD ENTER function ENTER: Enter the function setting 11 INPUT 12 ZOOM 13 FREEZE 14 P.POS 15 C.C 16 P.SIZE 17 MUTE 18 TV/DTV 19 PICTURE 20 RETURN 21 CH and CH 22 FAV. CH 23 MENU 24 WIDE 25 PIP/POP 26 P.INPUT 27 V-CHIP 28 SWAP Input source select Adjust window size "Freeze-Frame" the current screen Adjust sub-screen window position Displaying captions during closed caption source and closed caption mode select Adjust sub-screen window size Volume mute ON/OFF Swap between TV/DTV. Swap to TV when in other source Select picture modes Return to previous channel Adjust Channel UP/DOWN Select from preset Favorite Channels On Screen Display (OSD) menu ON/OFF Change the image size Toggle to enable/disable Picture in Picture/Picture Out of Picture function POP/PIP input source select Set V-Chip rating Switch between main screen and sub-screen
Note: PIP means Picture In Picture. POP means Picture Out Of Picture.
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OSD Functions
ADVANCED OPERATION -- OSD MENU Video Menu -- Adjusting the picture quality
Video Menu is active in all but the VGA input source. ENGLISH
Note: To adjust the Video settings, Smart Picture must be set to the User mode. (Select through the Picture button on the remote control)
· 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).
Audio Menu -- To set the audio quality and status
Audio Menu is active in all but the VGA input source.
Note: To adjust the Audio settings, Smart Sound must be set to the User mode. (Select through the Sound button on the remote control)
· Bass: To adjust bass. · Treble: To adjust the treble · Balance: To adjust left and right audio balance. · Surround: To enjoy a concert hall effect, select On when stereo is playing. · Audio Out: To control sound output ON/OFF from the RCA audio out connectors.
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TV Menu -- To set up for TV
It is only active in TV source.
ENGLISH
· 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. · Channel Edit: Press ENTER to edit a name for the channel appointed. Use to select the letters you want, and use BackSpace key to delete backwards. Move the cursor to OK and then press ENTER to complete and save the channel name. To cancel editing, choose Cancel or exit without pressing OK.
Setup Menu -- To set up OSD window
Setup Menu is active in all input sources.
· Language: To select a OSD language from English, French or Spanish. · Parental: To set up parental control.
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When you enter this control, the screen below will be displayed.
Channel Lock: To lock channels. Use to select the channel you want to lock, and then press ENTER to lock or unlock it. Change Password: To change the password, press ENTER and enter the password again. Press ENTER, and the following screen appears.
Enter the new password, use to move the cursor down, and then enter the new password again, press OK to confirm or Cancel to exit. Note: Please make sure you remember your new password after changing, because you cannot recall the default setting of the password by any selection. Clear All: To clear all the locks set before, press ENTER. Press MENU to return to the previous page. · Color Temperature: To select the color temperature from Warm, Cold, Normal or User. (If you select User, you can adjust the degree of R, G, B in Color Temp. to suit your personal preference.) · Back Light: To adjust the luminance of the back light. · Aspect Ratio: To select image size between Normal, Full, Wide1, Wide2, Wide3, 4:3, 16:9, and No scale. · OSD Timeout: To setup the display time of OSD. (5, 15, 45, and 60 seconds) · Memory Recall: To restore the factory default settings.
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ENGLISH
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.
DTV Menu -- To set up DTV settings
It is only active in DTV sources.
ENGLISH
· Audio Language: To select an audio language from English, French, or Spanish. · Time Zone: To select Time Zones. · SPDIF Type: To select the type of audio transfer file format. · Auto Scan: Press ENTER to start scanning DTV channels automatically. Press MENU at
any time to cancel Auto Scan.
· Manual Scan: To scan the DTV channels manually.
Press ENTER and select Scan Mode with .
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When in Add-on Mode, Press ENTER to start scanning all channels, and press MENU at anytime to cancel scanning.
When in Range Mode, use and number buttons to set the scanning range.
Press ENTER to start scanning, and press MENU at anytime to cancel scanning.
· Channel Skip: To skip channels when viewing channels with CH and .
Press ENTER, and then use ENTER to check/uncheck the channel you want to skip.
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ENGLISH
· Channel Block: Press ENTER to enter the password and block/unblock the channel(s). · Caption: To select closed caption signal formats and set up caption modes. (CC1~CC4,
Service1~Service 6) Use to select Analog Closed Caption or Digital Closed Caption, and then use to select caption types. Move the cursor to Caption Style, and press ENTER.
ENGLISH
Use to select Caption Style from As Broadcaster or Custom. When Custom is selected, use to select the desired controls, to adjust detailed settings.
Font Size: To select a font size from Large, Small, or Medium. Font Color: To select a font color from Black, White, Green, Blue, Red, Cyan, Yellow, or Magenta. Font Opacity: To select font opacity from Solid, Translucent, or Transparent. Background Color: To select background color. Background Opacity: To select background opacity. Window Color: To select window color. Window Opacity: To select window opacity.
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VGA Menu -- To set up for computer
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. · V Position: To adjust the vertical position of the picture
ADVANCED OPERATION -- REMOTE CONTROL
V-Chip Menu
V-Chip is transmitted from TV station to help parents monitor what their children watch. According to the pre-set of factory, viewers can see all of the channels. However, setting V-Chip can block the appointed channels. To set up V-CHIP function: Press V-CHIP button enter the password press ENTER, and the following screen will be displayed. Note: The factory default of the password is "0000". If you have changed the password, please make sure you remember the new password, because you cannot recall the default setting of the password by any selection.
Use to select your desired optional item, and press ENTER.
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ENGLISH
· Block MPAA Rating: To adjust movie blocking level in the US. You can select between
NONE, G, PG, PG-13, R, NC-17, or X.
ENGLISH
The movie Ratings in the US are defined as following. G PG General audience Parental guidance suggested R X Restricted Adult audience only NC-17 No one 17 and under limited
PG-13 Parents strongly cautioned
Use ENTER button to block or unblock the ratings, and use MENU to exit.
· Block TV Rating: To adjust TV blocking level in the US. You can select between TV-Y,
TV-Y7, TV-G, TV-PG, TV-14, or TV-MA.
The TV Rating in the US are defined as following. TV-Y All children TV-PG Parental guidance suggested TV-14 Parents strongly cautioned: this program contains some material that is unsuitable for children under 14 years of age TV-Y7 Directed to older children: this program is designed for children age 7 and above TV-G General audience
TV-MA Mature audience only
Use ENTER button to block or unblock the ratings, and use MENU to exit.
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· Canadian English Rating: To adjust blocking level in English-speaking region of Canada.
You can select between CE_E, CE_C, CE_C8, CE_G, CE_PG, CE_14, and CE_18.
The TV Ratings in English-speaking region of Canada are defined as following. CE_E CE_C CE_G Exempt Children General programming, suitable for all audiences CE_PG Parental guidance CE_14 Viewers 14 years and older CE_18 Adult programming
CE_C8 Children eight years and older
Use ENTER button to block or unblock the ratings, and use MENU to exit.
· Canadian French Rating: To adjust blocking level in French-speaking region of Canada.
You can select between CF_E, CF_G, CF_8ANS, CF_13ANS, CF_16ANS, and CF_18ANS.
The TV Ratings in French-speaking region of Canada are defined as following. CF_E CF_G Exempt General CF_13ANS This emission can not be appropriate to the children of less than 13 years CF_16ANS This emission is not appropriate for less than 16 years CF_18ANS This emission is reserved to the adults
CF_8ANS General-Disadvised to the young children
Use ENTER button to block or unblock the ratings, and use MENU to exit.
· Block MPAA Unrated: To block unrated movies. · Block TV None Rating: To block unrated TV programs.
Notes:Initial password:0000 If you forget your initial password,you can press"8866"to resume.
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ENGLISH
PIP/POP button allows you to watch two screens from different sources at the same time. (PIP is picture in picture; POP is picture out of picture) Press PIP/POP on the remote control repeatedly. The screen will change from normal screen PIP screen POP screen.
PIP/POP
PIP Screen ENGLISH
POP Screen
· PIP Input Source Select
Main Screen TV DTV HDMI YPbPr AV S-Video VGA
1. Press P.INPUT button to select input source for sub-screen as following. Available Sub-Screen Input Source DTV / HDMI / YPbPr / VGA TV / YPbPr / AV / S-Video / VGA TV / YPbPr / AV / S-Video / VGA TV / DTV / HDMI / AV / S-Video DTV / HDMI / YPbPr / VGA DTV / HDMI / YPbPr / VGA TV / DTV / HDMI / AV / S-Video
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.
The function is available both in PIP and POP.
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· 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.
Note that the screen indexed with the pink frame is the screen you select to set up. Use to move the index between the main screen and the sub-screen.
"MENU" Lock & Un-lock: Pressing "Vol+" and "Vol-" from Front Panel Keys. "POWER" Lock & Un-lock: Pressing "Vol+" and "MENU" from Front Panel Keys.
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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. Analog switch is built in MT8202 and accept CVBS, YPbPr, S-Video, RGB signal directly to internal video front end. For most system application, there is no need to add external components to add analog video multiplexer on board. The video ADC sample analog input signals. After ADC, all signal processing is digital domain.The source select multiplex all inputs from digital 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 image from popular composite signals. Embedded HDTV/VGA decoders let the high bandwidth input signals perfectly reproduced. 24/16/8 bits digital port may accept all kinds of external digital input video source. New 2nd generation advanced motion adaptive de-interlacer converts accordingly the interlace video into progressive one with overlay of a 2D Graphic processor. Advanced full function color processing with fully 10-bit path provides high quality video contents. Independent two Flexible scalers provide wide adoption to various LCD panels for two of different video sources at the same time. MT8202 supports alpha blending for Video and two OSD planes. It also supports 10bit gamma correction and advanced dithering processing for LCD display with 6/8/10 bit output.
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C. DTV and HDMI. MT5111CE is a fully integrated single-chip 8-VSB and 64/256-QAM demodulator. The chip is designed specifically for the digital terrestrial HDTV and CATV receivers. MT5111CE includes a 10-bit A/D converter, 8-VSB/QAM demodulator, TCM (Trellis-Coded modulation) decoder, and Reed- Solomon Forward Error Correction decoder. Moreover, an internal controller handles the acquisition and tracking to ensure the best receiving performance. The internal controller communicates with the external host controller via the I2C-compatible interface, and also provides direct control to the RF tuner via the second I2C-compatible interface. MT5111CE accepts either the direct IF signals and the IF signals are sampled by a 10-bit A/D converter. Afterward, the digitized samples are further processed for adjacent channel interference rejection. MT5111CE measures the power level of the digitized sequence, and feeds the control voltages back to the RF tuner and the IF amplifier respectively. 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 power level at a desired level and maximizes the received SNR. The MT5351AG is a DTV Backend Decoder SOC which support flexible transport demux, HD MPEG-2 video decoder, JPEG decoder, MPEG1,2, MP3, AC3 audio decoder, HD TV encoder. It incorporates a processor for system control. The processor issues instructions to control the peripheral via I˛C and communicates with MT8202 via UART. DDR SDRAM is externally connected to the MT5351AG, the unified memory allows all internal decoders can share data,which reduces external memory types and capacities. The MT5351AG receives bitstream input in TS format, and then separates the TS into audio and video PES, analyzing the PES header, and transferring the PES to the audio and video decoders. 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
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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. The built-in High-bandwidth Digital Content Protection (HDCP) decryption engine secures the digital link for transmission of valuable high-definition video and audio. Built-in HDCP self-test engine simplifies manufacturing testing.
12c interface
TMDS0~3
CSDL,CSDA
MT8202 LCD Controller IC
Digital audio interface
MT8293
PWR5V DSDL,DSDA KSDL,KSDA
HDMI_PLUG_POWER
HDMI Conn ector
DVI 0~23,DE,Hsync, Vsync,clk
HDMI_HPD 12C interface 12C interface
EEPROM for HDCP Key
EEPROM for EDID
CP10 interface
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. The HDMI transmitter sends the video & audio to MT8293 via 3 Data TMDS pairs & 1 CLOCK TMDS pairs. Digital video signals are directly output from the MT5351AG and MT8293 and then transfer them to the MT8202 for advanced processing.
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D. Audio MT8202 incorporates a on-chip audio processor decodes whole world standard audio signals from tuner with lip sync control, delivering high quality post-processed sound effect to customers. Audio interface accept analog audio signal from Tuner, e.g. SIF or AF. It also includes preprocessing circuit to filter the noisy audio signals. Audio decoder will decode the BTSC, and output best sound with enhanced 3D surround post-processing. The 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 removes dc offsets. External analog audio signal , such as AV, S-video, etc. is directly fed into AD12250 via a audio switch and converted to I2S digital audio data. Digital audio, such as HDMI and DTV, have decoded by MT5351 and MT8293, is converted to I2S digital audio already. The I2S digital audio data is decoded and processed by MT8202, and then be delivered to AD8256 for audio amplifying.
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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. Test Condition Before function test and alignment, each LCD TV should be run-in and warmed up for at least 30 minutes with the following conditions: (a) In room temperature, (b) With full-white screen, and 16 grey scale, (c) With cycled display modes. 1.4. Test Display Modes & Pattern 1.4.1 EEPROM INIT A. Timing: 1366*768@60Hz B. Pattern: 16*12 pane 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 disappeared. 1.4.2 COLOR TEMPERATURE ADJUSTING PC MODE: A. Timing: 1360*768@60Hz. B. Pattern: 16 grey scale. C. LCD TV should be run-in and warmed up for at least 30 minutes. D. Make sure the distance between SENOR of the CA110 and the LCD TV is about 20cm. E. Color Temperature adjusting. 1.Fig. 1: under the picture 16 grey scale of VGA source, select WHITE BALANCE and press ENTER, The color warm will auto adjust. The act of EHITE BALANCEL is completed when the picture is steady.
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2.After adjusting, switch to FULL WHITE and check the value of each color. Preset color for N3252W 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 N3252W x=0.283±0.015 y=0.298±0.015 1.4.3 Power Consumption Check ( VGA MODE ) A. TIMING: 1360 x 768@60Hz B. Pattern: 1010UPRIGHTNESS PATTERN C. BRIGHTNESS=MAX, CONTRAST=MAX. D. The power that each MODE consumed is shown in Chart 1. MODE NORMAL Stand-by MAX POWER COMSUMED 150W(max) for 27" 200W(max) for 32" 3 W (max) Chart 1 RED POWER LED COLOR GREEN
1.4.4 Check the position of the picture displayed and phase auto adjusting (VGA MODE). Depend on the TIMING of TIMING TABLE (TABLE 3) to switch MODE in order, stay about 10 seconds each MODE, it can changed and stored automatically each MODE. We can't switch over to the next MODE until AUTO ADJUST disappears. 1.4.5 HDMI MODE FUNCTION TEST A.DVI MODE: Depend on the TIMING of TIMING TABLE (TABLE 3 ) to check MODE in order. B.HDMI MODE: make sure the 480i, 480p, 720p, 1080i TIMING is right. 1.4.6 OSD FUNCTION TEST A. Time: 1360x768@60Hz B. Pattern: 16*12 pane C. Make sure that Each FUNCTION has one right action. 1.4.7 DTV FUNCTION TEST A. Select input source to DTV, Fig.3 will be shown.
Fig.3 1.4.8 YPbPr, S-VIDEO, AV, TV, DTV'S FUNCTION TEST A. Input YPbPr, S-VIDEO, AV , TV, DTV'S signal and check. B. Input USA air channel (TABLE 1) and USA CATV channel for TV channel. C. Under YPbPr MODE, Make sure the 408i, 480P, 720P, 1080i is right. 1.4.9 AUDIO FUNCTION TEST A. Audio input includes PC AUDIO IN, S-VIDEO/AV AUDIO IN and YPbPr AUDIO IN. B. Under PC MODE, input PC AUDIO signal, checks whether the action of AUDIO IN is right. C. Under S-VIDEO/AV MODE, input L/R AUDIO signal, checks whether the action of AUDIO IN is right. D. Under YPbPr MODE, input L/R AUDIO signal, checks whether the action of AUDIO IN is right. E. Under HDMI MODE, checks whether the action of AUDIO IN is right.
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F. Under DTV MODE, checks whether the action of SPDIF is right. G. AUDIO OUT FUNCTION TEST: Under all patterns except PC pattern, The Audio output meets active extra speaker, examines whether the extra speaker makes the sound. 1.4.10 EARPHONE FUNCTION TEST Under PC MODE, input PC AUDIO signal, determines whether the action of INT SPEAKER output is right. Meets earphone with the EARPHONE, Determined whether the action of EARPHONE output is normal. 1.4.11 All Modes Reset After final QC step, we must to erase all saved changes again and restore the factory defaults. You should do "All Mode Reset" again. Turn off the LCD TV by pressing "Power" button.
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TV Frequency Table: U.S.A Channel (TABLE 1) VIF 45.75 MHz, SIF 41.25 MHz (UnitMHz) 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 88 179.75 175.25 174 180 185.75 181.25 180 186 191.75 187.25 186 192 197.75 193.25 192 198 203.75 199.25 198 204 209.75 205.25 204 210 211.25 210 216 215.75 471.25 470 476 475.75 477.25 476 482 481.75 483.25 482 488 487.75 489.25 488 494 493.75 495.25 494 500 499.75 501.25 500 506 505.75 507.25 506 512 511.75 513.25 512 518 517.75 519.25 518 524 523.75 525.25 524 530 529.75 531.25 530 536 535.75 537.25 536 542 541.75 543.25 542 548 547.75 549.25 548 554 553.75 555.25 554 560 559.75 561.25 560 566 565.75 567.25 566 572 571.75 573.25 572 578 577.75 579.25 578 584 583.75 585.25 584 590 589.75 591.25 590 596 595.75 597.25 596 602 601.75 603.25 602 608 607.75 609.25 608 614 613.75 615.25 614 620 619.75 621.25 620 626 625.75 627.25 626 632 631.75 633.25 632 638 637.75 639.25 639 644 643.75 fosc 101.00 107.00 113.00 123.00 129.00 221.00 227.00 233.00 239.00 245.00 251.00 257.00 517.00 523.00 529.00 535.00 541.00 547.00 553.00 559.00 565.00 571.00 577.00 583.00 589.00 595.00 601.00 607.00 613.00 619.00 625.00 631.00 637.00 643.00 649.00 655.00 661.00 667.00 673.00 679.00 685.00 Ch. 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 Freq.range 644 650 650 656 656 662 662 668 668 674 674 680 680 686 686 692 692 698 698 704 704 710 710 716 716 722 722 728 728 734 734 740 740 746 746 752 752 758 758 764 764 770 770 776 776 782 782 788 788 794 794 800 800 806 fp (picture) fs (sound) 645.25 649.75 651.25 655.75 657.25 661.75 663.25 667.75 669.25 673.75 675.25 679.75 681.25 685.75 687.25 691.75 693.25 697.75 699.25 703.75 705.25 709.75 711.25 715.75 721.75 717.25 727.75 723.25 733.75 729.25 739.75 735.25 745.75 741.25 751.75 747.25 757.75 753.25 763.75 759.25 769.75 765.25 775.75 771.25 781.75 777.25 787.75 783.25 793.75 789.25 799.75 795.25 805.75 801.25 fosc 691.00 697.00 703.00 709.00 715.00 721.00 727.00 733.00 739.00 745.00 751.00 757.00 763.00 769.00 775.00 781.00 787.00 793.00 799.00 805.00 811.00 817.00 823.00 829.00 835.00 841.00 847.00
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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.range 54 60 60 66 66 72 72 78 76 82 82 88 90 96 96 102 102 108 108 114 114 120 120 126 126 132 132 138 138 144 144 150 150 156 156 162 162 168 168 174 174 180 180 186 186 192 192 198 198 204 204 210 210 216 216 222 222 228 228 234 234 240 240 246 246 252 252 258 258 264 264 270 270 276 276 282 282 288 288 294 294 300 300 306 306 312 312 318 318 324 324 330 330 336 336 342 342 348 348 354 fp fs (sound) (picture) 59.75 55.25 65.75 61.25 71.75 67.25 77.75 73.25 81.75 77.25 87.75 83.25 95.75 91.25 101.75 97.25 107.75 103.25 113.75 109.25 119.75 115.25 125.75 121.25 131.75 127.25 137.75 133.25 143.75 139.25 149.75 145.25 155.75 151.25 161.75 157.25 167.75 163.25 173.75 169.25 179.75 175.25 185.75 181.25 191.75 187.25 197.75 193.25 203.75 199.25 209.75 205.25 215.75 211.25 221.75 217.25 227.75 223.25 233.75 229.25 239.75 235.25 245.75 241.25 251.75 247.25 257.75 253.25 263.75 259.25 269.75 265.25 275.75 271.25 281.75 277.25 287.75 283.25 293.75 289.25 299.75 295.25 305.75 301.25 311.75 307.25 317.75 313.25 323.75 319.25 329.75 325.25 335.75 331.25 341.75 337.25 347.75 343.25 353.75 349.25 fosc 101.00 107.00 113.00 119.00 123.00 129.00 137.00 143.00 149.00 155.00 161.00 167.00 173.00 179.00 185.00 191.00 197.00 203.00 209.00 215.00 221.00 227.00 233.00 239.00 245.00 251.00 257.00 263.00 269.00 275.00 281.00 287.00 293.00 299.00 305.00 311.00 317.00 323.00 329.00 335.00 341.00 347.00 353.00 359.00 365.00 371.00 377.00 383.00 389.00 395.00 Ch. JJ KK LL MM NN OO PP QQ RR SS TT UU VV WW AAA BBB CCC DDD EEE 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 Freq.range 354 360 360 366 366 372 372 378 378 384 384 390 390 396 396 402 402 408 408 414 414 420 420 426 426 432 432 438 438 444 444 450 450 456 456 462 462 468 468 474 474 480 480 486 486 492 492 498 498 504 504 510 510 516 516 522 522 528 528 534 534 540 540 546 546 552 552 558 558 564 564 570 570 576 576 582 582 588 588 594 594 600 600 606 606 612 612 618 618 624 624 630 630 636 636 642 642 648 (UnitMHz) fp fs (picture) (sound) 355.25 359.75 361.25 365.75 367.25 371.75 373.25 377.75 379.25 383.75 385.25 389.75 391.25 395.75 397.25 401.75 403.25 407.75 409.25 413.75 415.25 419.75 421.25 425.75 427.25 431.75 433.25 437.75 439.25 443.75 445.25 449.75 451.25 455.75 457.25 461.75 463.25 467.75 469.25 473.75 475.25 479.75 481.25 485.75 487.25 491.75 493.25 497.75 499.25 503.75 505.25 509.75 511.25 515.75 521.75 517.25 527.25 523.25 533.75 529.25 539.75 535.25 545.75 541.25 551.75 547.25 557.75 553.25 563.75 559.25 569.75 565.25 575.75 571.25 581.75 577.25 587.75 583.25 593.75 589.25 599.75 595.25 605.75 601.25 611.75 607.25 617.75 613.25 623.75 619.25 629.75 625.25 635.75 631.25 641.75 637.25 647.75 643.25 fosc 401.00 407.00 413.00 419.00 425.00 431.00 437.00 443.00 449.00 455.00 461.00 467.00 473.00 479.00 485.00 491.00 497.00 503.00 509.00 515.00 521.00 527.00 533.00 539.00 545.00 551.00 557.00 563.00 569.00 575.00 581.00 587.00 593.00 599.00 605.00 611.05 617.00 623.00 629.00 635.00 641.00 647.00 653.00 659.00 665.00 671.00 677.00 693.00 689.00
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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 603.25 MULTIBURST MONO -10 TEST Close-caption T1 CHANNEL 36 FUNCTION 801.25 MONO SCOPE MONO(1KHz) -10 NOISE LIMMITTED CHANNEL 69 SENSITIVITY TV TEST METHOD A.CHANNEL2 Examines sound by ear, whether the sound does have mechanical resonation and the electrical unusual sound, and image to sound disturbance. B.CHANNEL6: Check sound and picture. C.CHANNEL7: Examines whether the sound does receive the image disturbance, Judgment basis: Whether there is unusual sound, input signal LEVEL<=36dBu,and STEREO SENSITIVITY is normal. D.CHANNEL13: Under main/sub/main-sub mode, check sub function. E.CHANNEL14: Examines whether the sound does receive the image disturbance, Judgment basis: Whether there is unusual sound. F. CHANNEL 36:Check T1 of close-caption. Input signal level<=45dBu. G.CHANNEL 69: Adjustment attenuator, If the critical point of the change of the image signal to noise ratio is under 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 most greatly is 90dBu,check whether CONTRAST of the image is normal; Whether appears the disturbance phenomenon. C.AFT CHECK, (1) The frequency of the input TV signal is 211.25MHz (CH13), after confirmed the TV set receives this signal, closure radio station; Then set frequency of the TV signal generator to be 212.25MHz, turn on the TV set and check whether the TV set receives the signal of CH13. (2). The frequency of the input TV signal is 211.25MHz (CH13), after confirmed the TV set receives this signal, closure radio station; Then set frequency of the TV signal generator to be 212.00MHz, turn on the TV set and check whether the TV set receives the signal of CH13. (3). After all of FUNCTION TEST completed, we must erase all saved changes again and restore the factory defaults. 1.6. DTV TEST ITEM FREQUENCY SOUND dB PETTEN CHECK CONTENT CHANNEL 471.25MHz Y 50 Dynamic picture Picture 14 603.25MHz Y 50 Color bar Color 36 801.25MHz Y 75 Dynamic picture Sound and Picture 69 DTV CHECK METHOD A.CHANNEL14: Check whether there are some pause or the mosaic phenomenon in the picture. 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
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under LEVEL<45~85> dBu, regards as normally. TIMING TABLE (FACTORY PRESET MODE) ITEM TIMING Pixel Rate H TOTAL H DISPLAY H B-Porch H Width H Border V TOTAL V DISPLAY V B-Porch Vs Width V Border H/V Sync Interlace ITEM TIMING Pixel Rate H TOTAL H DISPLAY H B-Porch H Width H Border V TOTAL V DISPLAY V B-Porch Vs Width V Border H/V Sync Interlace 1 640*480@60HZ 25.175MHZ 31.778us 25.422us 1.907us 3.813us 0.318us 16.683ms 15.253ms 1.049ms 0.064ms 0.254ms -/No. 5 1024 ×768 60HZ 65.000MHZ 20.677us 15.754us 2.462us 2.092us 0.000us 16.666ms 15.880ms 0.600ms 0.124ms 0.000ms -/No. 2
(TABLE 3) 3 800 *600@60HZ 40.000MHZ 26.400us 20.000us 2.200us 3.200us 0.000us 16.579ms 15.840ms 0.607ms 0.106ms 0.000ms +/+ No. 7 1280 ×720 60HZ 74.250MHZ 22.222us 17.239us 2.936us 1.007us 0.000us 16.667ms 16.000ms 0.444ms 0.111ms 0.000ms -/No. 4 800*600@75HZ 49.500MHZ 21.333us 16.162us 3.232us 1.616us 0.000us 13.333ms 12.800ms 0.448ms 0.064ms 0.000ms +/+ No. 8 1280 ×768 60HZ 65.000MHZ 20.677us 15.754us 2.462us 2.092us 0.000us 16.666ms 15.880ms 0.600ms 0.124ms 0.000ms -/No.
640 *480@75HZ 31.500MHZ 26.667us 20.317us 3.810us 2.032us 0.000us 13.334ms 12.800ms 0.427ms 0.080ms 0.000ms -/No. 6 1024 ×768 75HZ 78.750MHZ 16.660us 13.003us 2.235us 1.219us 0.000us 13.328ms 12.795ms 0.466ms 0.050ms 0.000ms +/+ No.
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TIMING TABLE (FACTORY PRESET MODE) ITEM TIMING Pixel Rate H TOTAL H DISPLAY H B-Porch H Width H Border V TOTAL V DISPLAY V B-Porch Vs Width V Border H/V Sync Interlace 9 1360 ×768 60HZ 85.5MHZ 20.959us 15.906us 2.994us 1.310us 0.000us 16.662ms 16.097ms 0.377ms 0.126ms 0.00ms +/+ No. 10
(TABLE 3) 11 12
1280 ×1024 60HZ 108MHZ 15.630us 11.852us 2.296us 1.037us 0.000us 16.661ms 16.005ms 0.594ms 0.047ms 0.00ms +/+ No.
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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 N3252W LCD TV DDC Card PC RS-232 cable Barcode Reader VGA Cable
N3252W LCD TV
DDC Card
PC
RS-232 Cable
VGA Cable
Barcode Reader
2.2 Setup Procedure 2.2.1 Connect VGA Card and DDC Card with RS-232 cable.
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2.2.2 Barcode Reader connects with keyboard and PC keyboard port.
2.2.3 Connect DDC Card and N3252W LCD TV with VGA Cable. (when key in DVI DDC information, use VGA transform to DVI port ) 2.2.4 Connect Power Cord to N3252W LCD TV.
2.3 DDC Key In Procedure 2.3.1 Run DDC.exe
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2.3.2 Choose model number then
2.3.3 Press "ENTER" key.
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2.3.4 Press "F4" key.
2.3.5 Input barcode
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2.3.6 Press "ENTER" key, then the successful picture is as follows. "DDC DOWNLOED OK!
2.3.7Exit program.
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3. HDMI DDC Key In Procedure 3.1 Equipment Needed N3252W LCD TV PC RS-232 cable Barcode Reader HDMI Cable
N3252W LCD TV
PC
RS-232 Cable
HDMI Cable
Barcode Reader
3.2 Setup Procedure 3.2.1Connect HDMI Card and DDC Card with RS-232 cable.
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3.2.2 Barcode Reader connects with keyboard and PC keyboard port.
3.2.3 Connect DDC Card and N3252W LCD TV with HDMI Cable. 3.2.4 Connect Power Cord to N3252W LCD TV. 3.3 DDC Key In Procedure 3.3.1 Run DDC.exe
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3.3.2 Choose model number then
.
3.3.3 Press "ENTER" key.
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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.
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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 - N3252W LCD TV - Fixture for Firmware Upgrade - VGA Cable - PC (Personal Computer) - Firmware Upgrade Program - One additional LCD TV for checking the program execution
N3252W
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 USB port. Then you can found the USB Device detected and follow Windows comments to finish the Driver install. 4.4 Execute the Mtktool to start download the file. The Mtktool program will be upgraded if necessary.
"MtkTool Auto BaudRate.exe"
4.5 The Mtktool Operat 4.5.1 Select Platform : MT8105 , MT1389 or MT8205
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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. 115200x 8 (Suggestion)
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4.5.4 Enable the USB Bridge.
4.5.5 Browsing the File to download.
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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 Media Tek contact window if any problem found like unsupported Flash Type or fail to download.
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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.RCA Cable 5.User's Guide 6.Remote contrl 7.Guarant Card 8.Battery
Figure 3
Figure 4
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PACKING PART LIST ( N3252w-1 )
ViewSonic Model Number: VS11335-1M Rev: 1a
Item ViewSonic P/N DESCRIPTION STATUS 1 2 P-00005968 Polyethy Bag Active 3 P-00006596 Foam Top (R) Active 4 P-00006597 Foam Top (L) Active 5 N/A N/A N/A 6 N/A N/A N/A 7 DC-00006593 User's Guide Active 8 DC-00006594 Quick Start Guide Active 9 A-00005362 10 CB-00003425 Cable RCA 3P(Y/R/W) 2562#26 1.8M BLK Active 11 N/A N/A N/A 12 A-VC-0101-0386 Video Cable-Cable ,D15/D15 20276(3+6) 1.83M Black Active 13 P-00004497 Box (Carton 360X220X50mm (WXDXH) Box(B) Active 14 P-00006595 Craft Box N3252w Active 15 N/A N/A N/A 16 N/A N/A N/A 17 A-00005500 REMOTE CONTROL Active Ref. P/N 2013054007P 2012184000P 2012184100P 2012184200P 2013228807P 2001131602P 2002310590P 2427130046P 2427701893P 2427740321P 2427501187P 2011100017P 2011132536P 2055632218P 2005100500P 2419200070P Location N3252W monitor POLYETHY BAG POLYFOAM (R) POLYFOAM (L) POLYFOAM(DOWN) POLYETHY BAG OWNER GUIDE GUARANT CARD(QSG) AC POWER CORD RCA CABLE RF CABLE VGA CABLE CARTON BOX CARTON BOX LABEL BATTERY REMOTE CONTRL Q'ty 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 1
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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.
Stand
Dust Cover
Dust Cover
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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.
Shield Plate
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3.2. Unscrew 9 screws to remove Dust Cover and METAL FITTG.
METAL FITTG-I/O-Down
DUST COVER
METAL FITTG-I/O-Side
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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.
Power Board
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3.5. Unscrew 3 screws and disconnect the wires to remove KeyPad Board.
3.6. Detach Speaker from the LCD TV
Speaker
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3.7. Unscrew 8 screws to remove Bracket.Fix.
BRACKET,FIX
3.8. Unscrew 4 screws to remove IR Board.
IR Board
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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.
Panel Bracket
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3.11.Unscrew 8 screws to remove Bracket.and Panel Unit.
Panel Unit
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6. Trouble Shooting Flow Chart
6.1. NO VOICE
TV
AV,S-VIDEO,YPbPr
Check I112 Pin11 has output signal?
No Replace I112
Check I134 Pin3,13 has output signal?
No Replace I134
Yes
Yes
No Replace I106
Check I106 has I2S signal output to I145?
Check I135 is defective?
Yes Replace I135
Yes
No
Check I136 is defective?
Yes Replace I136
Yes
Check Pin37 of I145 is high?
Yes
Check Earphone circuit
No
Check I145 is defective?
Yes Replace I145
No
Check Speaker Wire
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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 1.9V is on I102 Pin2? Replace I102
Yes
No Check IR Board Replace IR Board
Yes
Check X100 is OK?
No
Replace x100
Yes
Replace I106 & I107
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NTSC TV
YPb Pr
S-VIDEO
Check Video wave form is on I112 Pin12 ?
No Replace I112
Check L221,R172,R173,C332,C33 4 is OK?
No
Replace L221,R172 R173,C332,or C334
Check L224,R197,C340 is OK?
No
Replace L224,R197 or C340
Yes
Yes
Yes
Check L215,R501,R170,C331 is OK?
No
Replace L215.R501,R170 or C331
AV
Yes
Check I106 has output signal at Pin11~16 and Pin19~22 of P114 ?
No Replace I106 Yes
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
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Check L226,R203,C335 is OK?
No
Replace L226,R203, or C335
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6.3. NO DISPLAY
DTV
HDMI
Check Inner RF cable is OK?
No Replace Inner RF cable
Check HDMI Cable is well connected ?
No Connect the cable
Yes
Yes
Check +30V on Pin9 +5V on Pin17 of I124?
No
Replace I123 or I119
Check 27MHz is on Pin4 of I115?
No Check I106
Yes
Yes
Check I126 has output signal at RP42~RP44
No Replace I126 Check I114 is defective
Yes Replace I114
Yes
No
Check X103 has 27MHz clock output
No Replace X103
Check I115 has output signal at RP25~RP30?
No Replace I115
Yes
Yes
Check I127 has output signal at RP32~RP41?
No Replace I127
Check I106 has output signal at Pin11~16 and Pin19~22 of P114 ?
No Replace I106
Yes
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
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7. Block Diagram
DDR SDRAM DDR SDRAM
Flash
HDCP EEPROM
SPDIF (Optical) MT5351 (Mpeg decoder)