Vizio VO42L Service Manual

Service Manual

Model #: VIZIO VO42L

FHDTV10A_AUO/LPL

V, Inc

320A Kalmus Drive Costa Mesa, CA 92626

TEL : [phone] FAX :[phone]

Top Confidential

Table of Contents

CONTENTS PAGE

Sections

1. Features 1-1

2. Specifications 2-1

3. On Screen Display 3-1

4. Factory Preset Timings

5. Pin Assignment

4-1

5-1

6. Main Board I/O Connections 6-1

7. Theory of Circuit Operation 7-1

8. Waveforms 8-1

9. Trouble Shooting 9-1

10. Block Diagram 10-1

11. Spare parts list 11-1

12. Complete Parts List 12-1

Appendix

1. Main Board Circuit Diagram

2. Main Board PCB Layout

3. Assembly Explosion Drawing

Block Diagram

VIZIO VO42L FHDTV10A_AUO/LPL Service Manual

VINC Service Manual

VIZIO VO42L FHDTV10A_AUO/LPL

COPYRIGHT © 2000 V, INC. ALL RIGHTS RESERVED.

IBM and IBM products are registered trademarks of International Business Machines
Corporation.

Macintosh and Power Macintosh are registered trademarks of Apple Computer, Inc.

VINC and VINC products are registered trademarks of V, Inc.

VESA, EDID, DPMS and DDC are registered trademarks of Video Electronics Standards
Association (VESA).

Energy Star is a registered trademark of the US Environmental Protection Agency (EPA).

No part of this document may be copied, reproduced or transmitted by any means for any
purpose without prior written permission from VINC.

FCC INFORMATION
This equipment has been tested and found to comply with the limits of a Class B digital device,
pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable
protection against harmful interference in a residential installation. This equipment generates,
uses and can radiate radio frequency energy, and if not installed and used in accordance with
the instructions, may cause harmful interference to radio communications. However, there is
no guarantee that the interference will not occur in a particular installation. If this equipment
does cause unacceptable interference to radio or television reception, which can be
determined by turning the equipment off and on, the user is encouraged to try to correct the
interference by one or more of the following measures -- reorient or relocate the receiving
antenna; increase the separation between equipment and receiver; or connect the into an
outlet on a circuit different from that to which the receiver is connected.

FCC WARNING
To assure continued FCC compliance, the user must use a grounded power supply cord and
the provided shielded video interface cable with bonded ferrite cores. Also, any unauthorized
changes or modifications to Amtrak products will void the user’s authority to operate this
device. Thus VINC Will not be held responsible for the product and its safety.

CE CERTIFICATION
This device complies with the requirements of the EEC directive 89/336/EEC with regard to
“Electromagnetic compatibility.”

SAFETY CAUTION
Use a power cable that is properly grounded. Always use the AC cords as follows – USA (UL);
Canada (CSA); Germany (VDE); Switzerland (SEV); Britain (BASEC/BS); Japan (Electric
Appliance Control Act); or an AC cord that meets the local safety standards.

VIZIO VO42L FHDTV10A_AUO/LPL Service Manual

Chapter 1 Features

1. Built in TV channel selector for TV viewing

2. Simulatnueous display of PC and TV images

3. Connectable to PC’s analog RGB port

4. Built in S-video, HDTV, composite video, HDMI and TV out

5. Built in auto adjust function for automatic adjument of screen display

6. High quality 1920X1080 pixel by pixel display.

7. Smoothing function enables display of smooth texts and graphics even if

image with resolution lower than 1920X1080 is magnified

8. Advanced video functions for personal favor.

9. Picture In Picture (PIP) funtion to show TV or VCR images

10. Power saving to reduce consumption power too less than 1W

11. On Screen Display: user can define display mode (i.e. color, brightness,

contrast, sharpness, backlight), sound setting, PIP, TV channel program,

aspect and gamma or reset all setting.

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File No. SG-0262

Chapter 2 Specification

1. TFT-LCD CHARACTERISTICS

Model Name: LPL LC420WUN (Vendor: LG. Philips LCD Co., Ltd)

LPL LC420WU5 (Vendor: LG. Philips LCD Co., Ltd)

Display Size: 42.02 inches (1067.31mm) diagonal

Outline Dimension: 983.0 mm (H) x 576.0 mm (V) x 51.0 mm (D) (Typ.)

Pixel Pitch: 0.4845mm x 0.4845mm x RGB

Pixel Format: 1920 horiz. By 1080 vert. Pixels RGB strip arrangement

Display Operating Mode: Transmissive mode, normally Black

Surface Treatment: Hard Coating (3H), Anti-glare treatment of the front

polarizer (Haze 13%).

2. TFT-LCD OPTICAL CHARACTERISTICS

Contrast ratio: 1300(Typ) _

LPL LC420WUN

Contrast ratio: 1000(Typ) _ LPL LC420WU5

Surface Luminance, White: 500 cd/m

2 (Typ)

Luminance Variation, δ=1.3 (Max)

Response Time = 5ms (Max=8ms)

Viewing Angle (CR>10)

Left: 89° (min).

Right: 89° (min).

Top: 89° (min).

Bottom: 89° (min).

3. Input Connectors

1x Co-axial RF (ATSC/QAM/NTSC)

4x HDMI™** with HDCP (1 with Stereo Audio RCA)

2x Component YPbPr plus Stereo Audio

1x RGB PC plus Stereo Audio

1x S-Video plus Stereo Audio (shared with AV1)

2x Composite Video plus Stereo Audio (AV1 & AV2)

4. POWER SUPPLY

Input Voltage Level: 100~240 Vac, 50/ 60 Hz

Power Consumption: 250W MAXPower OFF: to less than 1W MAX

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Page 2-1

5. Speaker

Output 10W (max) X2

6. ENVIRONMENT

Operating Temperature: 5c~35c (Ambient)

Operating Humidity: Ta= 35 °C, 90%RH (Non-condensing)

Operating Altitude: 0 - 14,000 feet (4267.2m)(Non-Operating)

7. DIMENSIONS (Physical dimension)

：

Dimensions with stand

1024.4mm(W) x 669.2mm(H) x 243.4mm(D) inches

Dimension without stand

：

1024.4mm(W) x 665.7mm(H) x 99.9mm(D) inches

8. WEIGHT (Physical weight)

a. Net 20.2 +/- 0.5 kgs

b. Gross 26.2 +/- 1.0 kgs

Precaution

Please pay attention to the followings when you use this TFT LCD module.

1. OPERATING PRECAUTIONS

(1) The spike noise causes the mis-operation of circuits. It should be lower

than following voltage :

V=±200mV(Over and under shoot voltage)

(2) Response time depends on the temperature. (In lower temperature, it

becomes longer.)

(3) Brightness depends on the temperature. (In lower temperature, it becomes

lower.)And in lower temperature, response time (required time that

brightness is stable after turned on) becomes longer.

(4) Be careful for condensation at sudden temperature change. Condensation

makes damage to polarizer or electrical contacted parts. And after fading

condensation, smear or spot will occur.

(5) When fixed patterns are displayed for a long time, remnant image is likely

to occur.

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Page 2-2

(6) Module has high frequency circuits. System manufacturers shall do

sufficient suppression to the electromagnetic interference. Grounding and

shielding methods may be important to minimize the interference.

2. HANDLING PRECAUTIONS FOR PROTECTION

(1) The protection film is attached to the bezel with a small masking tape.

When the protection film is peeled off, static electricity is generated

between the film and polarizer. This should be peeled off slowly and

carefully by people who are electrically grounded and with well ion-blown

equipment or in such a condition, etc.

(2) When the module with protection film attached is stored for a long time,

sometimes there remains a very small amount of glue still on the bezel after

the protection film is peeled off.

(3) You can remove the glue easily. When the glue remains on the bezel

surface or its vestige is recognized, please wipe them off with absorbent

cotton waste or other soft material like chamois soaked with

normal-hexane.

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Chapter 3 On Screen Display

On Screen Display (OSD) is a friendly interface providing the function adjusting in our system.

Customers could operate it only by few buttons. There is the introduction of the OSD.

Main unit button

MENU OK
CH ▲ ↑
CH ▼ ↓
VOL + ←
VOL - →

Input

[MENU]

“MENU” button could star the OSD which could adjust the performance and set up the setting

between the different input sources. There are the structures.

TV Source

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A. Picture: (Bold: Default)

a. Picture Mode (Standard/Movie /Game / Custom)

b. Backlight (0~100, 90)

c. Contrast (0~100, 50)

d. Brightness (0~100, 50)

e. Color (saturation) (0~100, 50)

f. Tint (hue) (-32~32, 0)

g. Sharpness (0~7, 4)

h. Color Temperature (Cool/Normal/Warm/Custom)

i. Advanced Video

1. Noise Reduction (Low/Medium/Strong/Off)

2. Color Enhancement (Normal/Rich Color/Green/Flesh/Green/Blue/Off)

3. Advanced Adaptive Luma (Low /Medium/Strong/Extend/Off)

4. Enhanced Contrast Ratio (Off/On)

5. Color Temperature (Cool/Normal/Warm/Custom)

B. Audio: (Bold: Default)

a. Audio Mode (Flat/Rock/Pop/Classic/Jazz)

b. Equalizer

c. Balance (-50~50, 0)

d. Surround (ON/OFF)

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e. Digital Audio Out (PCM/off/Dolby Digital)

f. Speakers (ON/OFF)

g. Audio out (Fixed/Variable)

h. Lip Sync (0~5)

i. Reset Audio Mode

C. TV: (Bold: Default)

a. Tuner Mode (Cable/Antenna)

b. Auto Search

c. Partial Channel Search

d. Skip Channel

e. MTS (Stereo/SAP/Mono)

Time (Eastern/Atlantic/Indiana/Cential/Mountain/Arizona/Newfoundland/Pacific/Alaska/Hawaii)

f.

g. Daylight Saving (On/Off)

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