ViewSonic VTMS2431, VS12335-2M Service Manual

Service Manual

ViewSonic VTMS2431

Model No. VS12335-2M

23.6” LCD TV

(VTMS2431_SM Rev. 1a Apr. 2009)

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

Copyright© 2009 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 04/21/09 Initial Release Sophia Kao

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TABLE OF CONTENTS

1. Precautions and Safety Notices................................................................. 1

3. Front Panel Function Control Description................................................ 9

4. Circuit Description....................................................................................... 30

5. Adjustment Procedure................................................................................ 37

6. Trouble Shooting Flow Chart................................................................ ..... 64

7. Block Diagram............................................................................................. 67

8. Schematic Diagrams.................................................................................... 68

9. PCB Layout Diagrams................................................................................. 87

10. Exploded View And Exploded Parts List..................................................94

11. Recommend Spare Parts List................................................................... 97

2. Specification................................................................................................. 3

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1. Precautions and Safety Notices

1. Appropriate Operation

(1) Turn off the product before cleaning. (2) Use only a dry soft cloth when cleaning the LCD panel surface. (3) Use a soft cloth soaked with mild detergent to clean the display housing. (4) Disconnect the power plug from AC outlet if the product is not used for a long period of time. (5) If smoke, abnormal noise, or strange odor is present, immediately switch the LCD display off. (6) Do not touch the LCD panel surface with sharp or hard objects. (7) Do not place heavy objects on the LCD display, video cable, or power cord. (8) Do not use abrasive cleaners, waxes or solvents for your cleaning. (9) 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. (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.

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5.2. Handling and Placing Methods

Correct Methods: Incorrect Methods:

Only touch the metal frame of the LCD panel or the front cover of the monitor. Do not touch the surface of the polarizer.

Surface of the LCD panel is pressed by fingers and

that may cause “Mura”

Take out the monitor with cushions Taking out the monitor by grasping the LCD panel.

That may cause “Mura”

Place the monitor on a clean and soft foam pad. Placing the monitor on foreign objects. That could

scratch the surface of the panel or cause “Mura”

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LCD panel of this product shall be provided by “CMO” with a model number of M236H1-L01.The following table defines this panel specification. Any changes in panel must be pre-approved by ViewSonic in written.

Parameter Specification

LCD Type

a-Si TFT Active Matrix Wide Color, Transmissive Mode,

Normally Black LCD Interface 1-Channel LVDS Resolution (Native) 1920 x 1080 Display Area 23.6” diagonal; 521.28 (H) x 293.22 (V) mm Pixel Pitch 0.2715 (H) x 0.2715 (V) mm Viewing Angle H = 170, V = 160 with CR≥10 (Typical) Contrast Ratio 1000:1 (Typical) Brightness 300 nits (Typical) Response Time 5 ms, (Typical), g-g Brightness Uniformity 75% (Min), measured per panel spec. Chromaticity(CIE1931) White-x:0.313,White-y:0.329 (Standard Mode Only) Colors 16.7M (8-bits) Surface Treatment Hard coating (3H) Backlight 4 CCFLs (Cold cathode Fluorescent Lamp) Preset Color Panel Default Gray Scale 0-255 Rated Life (Backlight) > 50KHrs*(ILO at 3.0mA)

Front Screen Artifacts

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 primary mode (VGA & 60 Hz) and after user adjustment

b.) No image drift or lose fine-tune settings due to panel

temperature change.

Panel Acceptance Spec

Refer to the panel acceptance criteria specification.

Note: Intermittent and/or Display Pattern defects which result

in further bright or dark dots will be counted individually

against the above specification.

Note: Also refer to the panel defect acceptance specification. Panel performance characteristics “ MUST BE” met in all display modes/inputs at standard test conditions.

1. RF Tuner

RF tuner of this product shall be provided by “Samsung DTVS205CH201A” for NTSC/ATSC. The following table defines this tuner specification.

Parameter Specification

RF Tuning Range

NTSC/ATSC: 55.25 to 803 MHz, 2-69 Channels for Off-Air and

1-125 Channels for CATV RF Tuner Sensitivity (S/N Ratio at un-weight)

44 dB (min.)// 48 dB (max.)

Channel Bandwidth NTSC/ATSC/Digital Cable: 6 MHz Maximum CVBS Characteristics:

Video Amplitude Signal

0.8(min.)–1.2(max.) V

Audio Characteristics: SIF out level

500mV (typ.)

Compatible system TUNER NTSC/ATSC/QAM

Compatible system AV NTSC M

2. Specification

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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 DC Level Sync Pulse

0.7(min.) – 1.1(max.) V Typical. 0.3 V

S-Video Characteristics: Video Amplitude Signal

Y : 1.0Vp-p W / Neg. Sync (IN 75 Ω ) C : 0.285Vp-p (IN 75 Ω )

Y, Pb, Pr Characteristics: Video Amplitude Signal

Y:1.0Vp-p (IN 75 Ω) Pb:0.7 Vp-p(IN 75 Ω),Pr:0.7 Vp-p (IN 75 Ω)

Video Bandwidth

TSC: 6 MHz Maximum HDMI Characteristics Panel Link T.M.D.S HDMI-1.3 RGB Characteristics: Signal Type Sync Type Input Signal Rating

Sync Level: Frequency Range Pixel Color DDC Compliance

EDID Data Table

Analog VGA TTL, Separate Sync, with 2.2KΩ pull-down resistors 1250mV Max without damage to the product, 0-700 mV Full Range

2.5-5.25 V

Horizontal: 30-82K Hz, Vertical: 55-75 Hz

16.7 M DDC2B Compliant, Rev 1.3 Refer to Appendix

USB Characteristics USB 2.0

3. Audio

Audio amp of this product shall be provided by “YAMAHA” with a Model Number of YDA148 . “MST” MSD2248AL for VTMS2431-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

Tuner Input Base band Input

Power Output Max Rating 5W at 10 % T.H.D Distortion 5W at 10% T.H.D Distortion Speaker Impedance main speaker :8 Ω main speaker :8 Ω

Line In

NTSC: BTSC Mono / Stereo(standard) PAL: FM Mono / Stereo(standard)

500 mV rms (Typ)

1.6 V rms (Max) Impedance: 600 ohms

Line Out earphone jack

500 mV rms 15 mW@32Ω

Flatness of Amplitude Response

+/- 3 db (at 1KHz @1W) +/- 3 db (at 1KHz @1W)

Total Harmonic Distortion (Po=0.1 to 1 W, f=1KHz)

<2% <2%

Signal to Noise:

12 dB (100Hz to 1KHz) 8 dB (1kHz to 10kHz)

35 dB (100Hz to 10 kHz)

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4. Electrical

The following table defines the electrical specification of this product.

ELECTRICAL SPECIFICATION

1 Power Input Voltage Range 100-240VAC +/- 10% Wide Range

2 Input Frequency Range 47-63 Hz

3 Input Current 1.0A @ 115VAC // 0.5A @ 230VAC

4 Power Supply Inrush

Max in < 80A (with fully loaded power supply) at 230Vac Shall not result in permanent failure of power supply (including blown fuse)

5 Power Consumption: 60 W (Normal), 75W (Max) // Stand by: < 2 W

6 Interference with RF and Video

There shall be no visible interference between power supply, RF and video signals. This applies to all available RF channels and video modes.

7 Electromagnetic Compatibility

This product shall adhere to the compatibility and immunity specifications in FCC.

Power Supply Transient Immunity (Supply Transients and Outage)

Able to withstand an ANSI / IEEE C62.41 – 1980 2000V ring wave with no damage.

9 Surge Immunity Test

Able to withstand 1.25X nominal Line Voltage for one cycle with no damage.

Power Supply Missing Cycle Immunity

Function properly without reset or visible screen artifact when 1/3 cycle of AC Power is randomly missing.

11 Power Supply Acoustics

The Power Supply shall not produce audible noise that would be detectable by the user (Excluding Power Supply Fan). “Audible” shall be defined in accordance with ISO 7779 (DIN EN27779:1991). Power Switch noise shall be Excluded.

12 Efficiency >= 80% @ full load, nominal line

13 Leakage Current <0.5mA @ 240VAC

14 Power Saving(DPMS) N/A

15 Recovery Time < 3 sec.

16 Power Factor Correction Compliant with EN61000-3-2

5. Firmware & OSD

The product firmware of VS12335-2M shall have a firmware version of V2.00EB0. Any changes/revisions afterward shall also be pre-approved by ViewSonic in written. For VS12335-1M, its firmware shall have a built-in frequency table for NTSC/ATSC off-air TV/CATV, 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) in conjunction with the front panel adjustments.The following tables list the OSD functions supported by VS12335 -2M.

OSD Table for VS12335-2M

Picture Mode Standard,Dynamic,Soft,Personal

Contrast 0~50~100

Brightness 0~50~100

Sharpness 0~50~100

Tint -50~0~+50

Color 0~50~100

Color Mode Cool, Normal, Warm

Zoom Mode Full, Movie Scale, Zoom In,4:3

PICTURE

Noise Reduction Standard, Strong, Weak, Off

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Sound Mode

Standard, Music, Movie, Sports, Personal

Treble/Bass Bass, Treble, Balance

Prefer Language(ATSC) English, French, Spanish

Surround Sound On, Off

ADUIO

Audio Only On, Off

Sleep Timer

OFF, 5,10,15,20,30,45,60,90,120,180,240 Min

Time Zone

Pacific, Alaska, Eastern, Central, Mountain, Hawaii

DST On, Off

Time-Format 12/24-hour

Auto Sync On, Off

TIME

Clock

Year, Month, Day, Hour, Min, OK, Cancel

Menu Language English, French, Spanish

Transparency 0%,25%,50%,75%,100%

OSD Time Out 5,15,30,45,60 sec.

Closed Caption CC off, CC on, CC on mute

Basic Selection off, CC 1~4 Text 1~4

Advanced Selection(ATSC) off, Service 1~6

Option, Font style, Front size, Front edge style Front edge color, FG color, BG color, F G Opacity

Option(ATSC)

GG Opacity

DCR On, Off

Restore Default Yes, No

OPTION

TV ID 01-99

TV Source Air, CATV

CHANNEL

Auto Scan

Scan all channels, Digital channel only, Analog channel only

OSD Table for

VS12335-2M USB

MOVIE File list

Previous, Play/Pause,Next,Stop,Timer

PHOTO Photo file list preview

Previous,Play/Pause,Next,Rotate, Stop,Zoom,File name

E-BOOK FILE File list Refer to MOVIE or PHOTO

Language English, French, Spanish Slideshow duration 3s,5s,15s,1mins,15mins,1hour

Slideshow mode

Random, Fading, Off Bottom to top, Top to bottom Left to right, Right to left Door close, Door open Horizontal cross, Vertical cross

Movie repeat mde Repeat all, Repeat one

SETUP

Auto run On, Off

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6. 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. Besides the key-code and protocol has fully conformed to VS standard.

Parameter Specification

Type IR; Made by Sighter Electronics Co., Ltd.

Range

Off axis ± 15° ≥ 5M

On axis: ≥ 7M Life Testing (Buttons)

100,000 cycle operations at a rate of 20~30 cycle / minute without load (with

battery)

Color

Painting Color - PANTONE 427C (Black for front & back cover)

Power Key - PANTONE 032C (RED)

Key Pads – PANTONE 10C & PANTONE 7C(Cool Gray)

Texts Printed on Front Cover and Key Pads - PANTONE 427C Protocol VS key-code & protocol.

7. Mechanical

The following table defines the mechanical specifications of this product for both chassis and cabinet.

Parameter Specification

Dimension W/O stand

W=566.7mm, H=441.9mm and D=211.0mm

W=566.7mm, H=386.7mm and D=85mm Net Weight 7.0kg Chassis Plastic Material ABS (ABS HB ) External Plastic Chassis Components

Plastic Chassis, Cover, Stand, Len and Button

Internal Plastic Cabinet Components

N/A

Exterior Chassis Color Refer to- Product ID Guide Chassis Component’s Color Difference

Refer to- Product ID Guide

Chassis Color Drift Due to UV-Light

The color drift due to UL-Light shall be less than 10 “Delta 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:N/A ; MT11010) Molded Plastic Workmanship shall be inspected according to ViewSonic

Molded Plastic Parts Specification, VSCMPPSPEC001V1.2. Screen Printed Parts, Bird Logo Recess

Artwork shall be provided and confirmed by ViewSonic.

Rear Label A label identifying the product name, model/serial number and

FCC ID/Logo shall be placed into the rear label recess located

on the rear panel of the chassis. Wall- Mount 100mmx100mm VESA high hole (n=4), M4 x 10mm, pitch

=0.7mm screw mounting kit not included. 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 1.0mm. The maximum

acceptable gap between LCD panel and bezel shall be within 1.3 mm.

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8. Environmental

The following table defines the operational/storage conditions of the product.

Operating Temperature

0°C to +40°C

Humidity 10% ~ 65% non-condensing

Altitude 0 meter to +2000 meters above sea level

Storage Temperature

-20°C to +60°C

Humidity 0 ~ 90% non-condensing

Altitude 0 meter to 12,000 meters above sea level

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3. Front Panel Function Control Description

Front View of the Product

Item Description

Power ON/OFF button

Turn the power on from standby mode or turn the power off to return to the standby mode.

Power LED Indicator

Lights up in blue when the TV is turned on. Lights up in orange when the TV is in standby mode.

Remote Control Receiver

Receives IR signals from the remote control.

Volume Down

Decrease sound volume or adjust a highlighted control while in OSD menu.

Volume Up

Increase sound volume or adjust a highlighted control while in OSD menu.

Turn OSD menu ON/OFF.

CH Down

Channel down when source is TV, or select a control while in OSD menu.

CH Up

Channel up when source is TV, or select a control while in OSD menu.

INPUT

Select input source.

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Rear View of the Product

Item Description

1 Power (AC input)

Plug-in the supplied AC Power cord and connect to the AC input power source.

HDMI Input Terminal

Connect this port to the HDMI/HDMI-DVI jack of the compatible equipment.

VGA signal input

Connect a 15-pin D-sub RGB cable to the RGB output of your computer and the other end to the RGB input on the rear of the LCD TV.

YPbPr signal input

Connect this jack to the YPbPr output of A/V device.

Composite Video input

Connect this jack to the composite video output connectors on your A/V equipment.

S-Video input

Connect the S-Video cable from the compatible device to this connector on the rear panel of the LCD TV.

AV/ S-Video Audio input (left/ right)

Connect the Audio in cable for AV/ S-Video from this jack to the corresponding connectors on your A/V device.

YPbPr/ DVI Audio input (left/ right)

Connect the Audio in cable for YPbPr/ HDMI-DVI from this jack to the corresponding connectors on your A/V device.

PC Audio input

Connect the RGB Audio Out on your computer to the RGB Audio on the rear of the LCD TV.

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Item Description

10 Headphone Jack

Connect to your headphones. By connecting the headphones, you can listen to the sound from the TV on headphones.

※

If you connect the headphones, the TV speakers will be muted.

11 TV Input Jack

Connect this jack to your Cable or VHF/UHF antenna.

12 RS232 signal

input

This port is for the service technician’s use. For the function description of RS232, please download the complete user guide from www.viewsonic.com and refer to RS232 Protocol on page 45 to 55. (The RS232 application software is not supplied with TV.)

13 USB

Connect to your USB devices, such as USB ash drive/ portable hard drive.

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Connecting the LCD TV

VHF/ UHF CABLE

Digital cable box

Digital satellite receiver

DVD Player

Audio system

Blu-ray Disc Player/ PS3

Personal Computer

HeadphoneDVD Player/ VCD Player/ Game system

DVD Player/ VCD Player/ Game system

DVD Player/ Personal Computer

AC power socket

DVD Player/ VCD Player/ Game system

USB Device

☼

• Please refer to the Quick Start Guide (supplied) when connecting the other equipment to your LCD TV.

• For detailed information, please download the complete user guide from www.viewsonic.com

and refer to page 16 to 20.

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Remote Control

ENGLISH

Buttons located at the bottom of the LCD TV will operate the same as these buttons on the remote control.

Button Description

1 INPUT

Input source select

2 ENTER

Conrm selection or enter selected menu

3 TV

Direct to TV source

4 - VOL +

Adjust volume UP/DOWN

5 GUIDE

Show electronic program guide (EPG)

6 LIST

Select channel from program list

7 0~9, -

number buttons

Directly channel select

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Button Description

8 RECALL

Return to previous channel

9 SLIDE

SHOW

Display the photo les in slideshow mode

10 PLAY/

PAUSE

Pause or play in photo/movie mode

11 PREVIOUS

Display previous photo

12 NEXT

Display next photo

13 POWER

Power ON/OFF

14 ▲▼◄►

buttons

Move the cursor in OSD menu: UP/ DOWN for OSD function select and LEFT/ RIGHT for function adjust

15 MENU

On Screen Display (OSD) menu ON/OFF

16 ▼ CH ▲

Adjust Channel UP/DOWN

17 ZOOM

Adjust window size

18 FAV

Select from preset Favorite Channels

19 MUTE

Volume mute ON/OFF

20 INFO

Display current information

21 SLEEP

Set timer to turn off TV

22 MTS

Select Mono, Stereo or SAP sound

23 C.C

Select caption mode

24 16:9/4:3

Switch between 16:9 and 4:3 aspect ratio screen

25 ROTATE

Rotate the photos in 90°, 180°, 270°, and 0°

26 EXIT

Exit the current screen

27 STOP

Return to photo thumbnail screen or stop the movie playing and go back to the Movie Preview screen

※

Button 9~12, 24~27 only works under Movie mode of the USB

input source.

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Operation

Storing Channels into Memory

1. Press the MENU button to display the OSD main menu.

2. Press ◄ or ► to select the “CHANNEL” menu. Press ▲ or ▼ to select “TV Source”, and use ◄ or ► to select the antenna connection to “Air” or “Cable”. Air: RF signal programs by “Air”. Cable: RF signal programs by “Cable”.

3. Press ▲ or ▼ to select “Auto Scan”, then press ► to

enter.

4. Press ▲ or ▼ to select “Scan all channels”, “Digital channel only”, or “Analog channel only” and press ► to

perform Auto Scan function. To stop scanning, press MENU at any time.

5. The Auto Scan screen will be shown, and after it is

done, the screen will return to the rst found channel.

Viewing the Menus

1. Press the MENU button to display the OSD main menu. There are six top menus on the screen: PICTURE,

AUDIO, TIME, OPTION, LOCK, and CHANNEL.

2. Press ◄ or ► to select your desired top menu.

3. Press ENTER or ▼ to enter the menu you select.

4. Use ▲▼ to select the control you want to adjust.

5. When selecting the control with ►, press ► to enter next level menu or enable the function. (► will only

appear when the control is highlighted)

6. Press ◄► to adjust or select the settings.

7. Press MENU to exit from the OSD menu.

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Selecting the Input Source

To select the TV or other external input sources connected to the TV.

1. Press the INPUT button on the remote control.

2. Press ▲ or ▼ to select the required input source between

TV, AV, S-Video, YPbPr, HDMI, PC, or USB.

3. To conrm the selection, press ENTER.

Favorite Channel Setting

To set your favorite channel into memory:

1. Press the MENU button to display the OSD main menu.

2. Press ◄ or ► to select the “CHANNEL” menu. Press ▲ or ▼ to select “Favorite”, then press ► button to enter “Favorite” setting.

3. Press ▲ or ▼ to select the channel you’d like to be your

favorite channel. Press ENTER to conrm your selection.

4. To cancel the selection, Press ENTER again on the selected channel.

5. Press MENU to exit.

＊To view your favorite channels, press FAV button to show Favorite List and select your favorite channels that have already been stored.

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Channel Name Setting

To edit a name for the current channel:

1. Press the MENU button to display the OSD main menu.

2. Press ◄ or ► to select the “CHANNEL” menu.

3. Press ▲ or ▼ to select “Channel No.”, then press ◄ or ►

to select the channel you want to edit the name.

4. Press ▲ or ▼ to select “Channel Label”, then press ► button to enter “Channel Label” setting.

5. Use ▲ or ▼ to choose letters or signs, ◄ or ► to move

forward or backward.

6. After you input the channel name, press MENU or ENTER to complete the setting.

7. Press MENU to exit.

Adding/Erasing Channel

When the channel is erased, it will not appear on the

screen when you browse the channels with ▼CH▲

button. To see the channel again, you must add the channel

or perform the “Auto Scan” (page 9) function again.

1. Press the MENU button to display the OSD main menu.

2. Press ◄ or ► to select the “CHANNEL” menu. Press ▲ or ▼ to select “Show/Hide”, then press ► button to enter “Show/Hide” setting.

3. Press ▲ or ▼ to select the channel you want to Show/

Hide, and check or uncheck it with ENTER button.

4. Press MENU to exit.

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Adjusting the Settings

(1) Press the MENU button to display the OSD main menu.

(2) Press ◄ or ► to select your desired top Menu. (3) Press ▲ or ▼ to select the control of “Contrast”,

“Brightness”, “Sharpness”, “Tint”, “Color”, then press ◄ or ► to adjust the level.

(4) Press MENU to exit.

(1) Press the MENU button to display the OSD main menu.

(2) Press ◄ or ► to select your desired top Menu. (3) Press ▲ or ▼ to select the control of “Picture Mode”,

“Color Mode”, “Zoom Mode”, “Noise Reduction”, “Sound Mode”, “MTS”, “Prefer Language” (in DTV mode), “Surround Sound”, “Audio Only”, “Sleep Timer”, “Time Zone”, “DST”, “Time Format”, “Auto Sync”, “Clock”, “Menu Language”, “Transparency”, “OSD Time Out”, “DCR” (Dynamic Contrast Ratio), and “TV ID”, then press ◄ or ► to select your desired option.

(4) Press MENU to exit. ＊When in YPbPr source, the option selected in Picture Mode

of PICTURE Menu (Standard, Dynamic, Soft, or Personal) will be applied in USB source.

(1) Press the MENU button to display the OSD main menu.

(2) Press ◄ or ► to select your desired top Menu. (3) Press ▲ or ▼ to select the control with ►, including

“Treble/Bass”, “Closed Caption”, “Restore Default”, then press ► to perform the function or enter detailed

settings.

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Closed Caption Setting

1. Press the MENU button to display the OSD main menu.

2. Press ◄ or ► to select the “OPTION” menu. Press ▲ or ▼ to select “Closed Caption”, then press ► button to enter “Closed Caption” setting.

3. Press ▲ or ▼ to select CC Mode, Basic Selection, or Advanced Selection, and use ◄ or ► to make your choice.

Basic Selection: To set basic analog closed caption options. (CC1~CC4, TEXT1~TEXT4, Off) Advanced Selection: To select closed caption signal formats and set up caption modes for digital TV channels. (Service1~6, Off)

Setting up Time menu

1. Press the MENU button to display the OSD main menu.

2. Press ◄ or ► to select the “TIME” menu.

3. Press ▲ or ▼ to select “Sleep Timer”, and press ◄ or ► to set the “Sleep Timer” from 5~240 min, or Off.

4. Press ▲ or ▼ to select “Time Zone”, and select the correct time zone of your area with ◄ or ►. The displayed time of “Clock” will be changed at the same time automatically. To adjust “Clock”, select “Clock” and press ►. Use ◄ or ► to change between year/ month/ date/ hour/ minute, ▲ or ▼ to adjust. When you nish adjustment, select “OK” and press ENTER to complete the setting. ＊The “Clock” time can only be adjusted manually when “Auto Sync” is set to “Off”.

5. Press ▲ or ▼ to select “DST” (Daylight Saving Time), and select On or Off with ◄ or ► according to the time zone of your area. The “Clock” time will change

automatically.

6. Press ▲ or ▼ to select “Time Format”, and ◄ or ► to

select 12-hour or 24-hour.

7. Press MENU to exit.

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Using the Parent Controls

1. Press the MENU button to display the OSD main menu.

2. Press ◄ or ► to select the “LOCK” menu.

3. Press ENTER or ▼ to enter Password.

4. Enter the password. (The default password is 0000)

5. Move to “System Lock”, and select “On” to enable the

detailed settings.

6. Move to “US” or “Canada” rating system.

For detailed Close Caption setting:

1. Press ▲ or ▼ to select “Option”, then press ► to enter “Option” setting.

2. Press ◄ or ► to select the Mode to be “Custom”, and then use ▲ or ▼ to select desired options and use ◄ or ► to

adjust detailed settings.

＊When you select the Mode to be “Default”, you can

not adjust the detailed settings.

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US: Press ► to set TV or MPAA ratings.

(1) TV

1. Press ▲ or ▼ to select “TV”, then press ► to enter “TV” rating system setting.

The following screen will allow you to customize the following TV ratings:

Y (all children) Y7 (older children) G (general audience) PG (guidance suggested) 14 (strongly cautioned) MA (mature audience)

You can also customize the TV ratings for the following content: ALL (

All types content)

FV (fantasy violence) V (violence) S (sexual situations) L (adult language) D (sexsual dialog)

2. Press ENTER to set or reset each area.

3. Press MENU to exit.

(2) MPAA

1. Press ▲ or ▼ to select “MPAA”.

2. Press ▲ or ▼ to select your desired MPAA ratings

level.

The MPAA ratings level are dened as following:

G (general audience) PG (parental guidance suggested) PG-13 (recommended for children 14 years of age

or older)

R (mature audience) NC-17 (no one under 17 years of age) X (adult audience only) N/A (not applicable)

3. Press MENU to exit.

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Canada: Press ► to set Canadian English and French

ratings. (1) Canadian English

1. Press ▲ or ▼ to select “Canada Eng”.

2. Press ► to enter.

3. Press ▲ or ▼ to select your desired Canadian

English rating level.

The Canadian English rating levels are dened as

following:

C (children) C8+ (children eight years and older) G (general programming, suitable for all audiences) PG (parental guidance) 14+ (viewers and older) 18+ (adult programming) EXEMPT (exempt)

4. Press MENU to exit.

(2) Canadian French

1. Press ▲ or ▼ to select “Canada Fre”.

2. Press ► to enter.

3. Press ▲ or ▼ to select your desired Canadian

French rating level.

The Canadian French rating levels are dened as

following:

G (genenral) 8ans+ (children eight years and older) 13ans+ (not appropriate for children of less than 13

years) 16ans+ (not appropriate for children of less than 16 years)

18ans+ (reserved to adults) EXEMPT (exempt)

4. Press MENU to exit.

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To Block Unrated Movie or TV Programs

1. Press ▲ or ▼ to select “Unrated Lock”, then press ◄ or ► to select “On” or “Off”. When “On” is selected,

all programs that are not rated will be blocked.

2. Press MENU to exit.

To Set Rating Region Table

RRT Setting defines the rating standard for a particular geographic region and/ or country.

1. Press ▲ or ▼ to select “RRT Setting”, then press ► to

enter RRT setting.

2. Select each adjustable setting with ▲ or ▼, then press ◄ or ► to select the sub-selection.

3. Press MENU to exit.

＊The picture here only shows an example of the content of RRT Setting. However, the selections and subselections of RRT Setting may be different in your OSD menu according to the local broadcasting system.

＊To reset RRT setting, move to “Reset RRT”, and press ► to reset.

To Change Password

1. Press ▲ or ▼ to select “Change Password”, then press ► to enter “Change Password” setting.

2. Move to “Enter Old Password”, then enter the old

password with number keys.

3. Enter your new password on “Enter New Password”.

4. Enter your new password again on “Conrm Password”.

After you complete the last step, the screen will return to

the top page of LOCK menu. If so, the password has been

changed successfully.

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To block by Input Source

1. Press ▲ or ▼ to select “Input Block”.

2. Press ▲ or ▼ to select the input source, then press ◄ or ► to select from “Block” or “UnBlock”.

3. Press MENU to exit.

To Restore Factory Setting

1. Press the MENU button to display the OSD main menu.

2. Press ▲ or ▼ to select the “OPTION” menu.

3. Press ENTER or ► to enter “OPTION” menu.

4. Press ▲ or ▼ to select “Restore Default”, then press ►

to restore the factory default setting.

5. Select “Yes” and press ENTER to conrm the setting.

Setting RS232 Parameter

1. Press the MENU button to display the OSD main menu.

2. Press ▲ or ▼ to select the “OPTION” menu.

3. Press ENTER or ► to enter “OPTION” menu.

4. Press ▲ or ▼ to select “TV ID”, then press ◄ or ►

to set the TV ID number from 01~99. For detailed information, please download the complete user guide from www.viewsonic.com and refer to RS232 Protocol on page 45~55.

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Using PC Function

1. When in PC source, press the MENU button to display the OSD main menu.

2. Press ◄ or ► to select the “PICTURE” menu.

3. Press ▲ or ▼ to select your desired controls, and press ◄ or ► to adjust.

4. For advanced PC functions, select “Advanced” (only in PC source) and press ► to enter.

5. Press ▲ or ▼ to select “Auto” (Auto adjustment), “H-Pos” (H-Position), “V-Pos” (V-Position), “Clock” or “Phase”, and adjust the level with ◄ or ►.

＊When in PC source, the other menus are the same as or

similar to when in other source.

＊When there is no signal in the PC mode, “No Signal” will

be displayed on the screen and the TV will automatically turn into power-saving mode after a few seconds’ idleness. Press INPUT or POWER button on the remote control and the TV will return to VGA mode.

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Using USB Function

1. After a USB device is inserted into the USB jack, the screen will automatically jump to the USB mode selection screen.

2. The default modes are: MOVIE, PHOTO, E-BOOK, FILE, and SETUP. Press ◄ or ► keys

on the remote control to switch between different modes, and press ENTER to enter the selected mode.

3. Use ▲ or ▼ to move the cursor up and down, ◄ to return to previous level, ► to enter next

level. Press EXIT or MENU will return to the top level menu screen.

4. When the le you wish to play is selected, press ENTER to play.

※You can also use the buttons on the TV panel to make selection. The panel buttons function

the same as the following keys on the remote control:

VOL - : ◄ VOL + : ◄ MENU : MENU/EXIT CH - : ▼ CH + : ▲ INPUT : ENTER

＊Press the CH - and INPUT keys together at the same time will change the input source

from USB mode to TV mode.

MOVIE mode: Select the Movie icon to get to the Movie Preview screen. All the movie

les will be listed in the playlist at the left of the screen. The right side of the screen will start playing the selected movie. Use arrow keys to navigate between the movie les, and you can

preview the movie in the window on the right side of the screen.

＊When playing the movie in the preview screen, audio will be muted.

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Press ENTER to play the movie. Press ENTER again and the info bar at the bottom of the screen will be displayed.

The info bar includes some quick launch buttons:

Item Function Description

◄

Preivous

Play the previous movie in the playlist.

►/

Play/Pause

Stop the movie from playing. Press again to play.

►

Play the next movie in the playlist.

Stop/Back

Stop the movie playing and go back to the Movie Preview screen.

PHOTO mode: Photo thumbnails will be displayed in this folder. Use arrow keys to select a photo.

＊The photo will not be displayed if it is not supported by this TV. Instead, the photo

thumbnail will be replaced by the “ ” icon.

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+ 72 hidden pages

ViewSonic VTMS2431, VS12335-2M Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual