Vizio VO42L User manual

Service Manual
V, Inc
320A Kalmus Drive Costa Mesa, CA 92626
TEL : [phone] FAX :[phone]
Top Confidential
Model #: VIZIO VO42L
FHDTV10A_AUO/LPL

VIZIO VO42L FHDTV10A_AUO/LPL Service Manual
Table of Contents
CONTENTS PAGE
Sections
1. Features 1-1
2. Specifications 2-1
3. On Screen Display 3-1
4. Factory Preset Timings 4-1
5. Pin Assignment 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

VINC Service Manual
VIZIO VO42L FHDTV10A_AUO/LPL
VIZIO VO42L FHDTV10A_AUO/LPL Service Manual
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.

CONFIDENTIAL – DO NOT COPY Page 1-1
File No. SG-0262
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.

CONFIDENTIAL – DO NOT COPY Page 2-1
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/m2 (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

CONFIDENTIAL – DO NOT COPY Page 2-2
File No. SG-0262
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.

CONFIDENTIAL – DO NOT COPY Page 2-3
File No. SG-0262
(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.

CONFIDENTIAL – DO NOT COPY Page 3-1
File No. SG-0262
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

CONFIDENTIAL – DO NOT COPY Page 3-2
File No. SG-0262
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)

CONFIDENTIAL – DO NOT COPY Page 3-3
File No. SG-0262
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)
f. Time (Eastern/Atlantic/Indiana/Cential/Mountain/Arizona/Newfoundland/Pacific/Alaska/Hawaii)
g. Daylight Saving (On/Off)

CONFIDENTIAL – DO NOT COPY Page 3-4
File No. SG-0262
D. Setup: (Bold: Default)
a. Language (English/ Français / Espaňol)
b. PIP
1.PIPMode(OFF/PIP/POP)
2.PIPSource
3.
PIP Position(Bottom Right, Bottom Center, Bottom Left, Middle Left,
Top Left, Top Center, Top Right, Middle Right)
4.Size(Small/Medium/Large)
5. Audio Source (Main/PIP/POP)
c. Sleep Timer (OFF/30Min/60Min/90Min/120Min)
d. Wide
e. Input Naming
f. CC
1. CC on Mute (Off/On)
2.CC(OFF/CC1~4/TT1~4)
3. Digital CC Style
a). Caption Style (As Broadcaster/Custom)
b).FontSize(Large/Small/Medium)
c).FontColor(White/Green/Blue/Red/Cyan/Yellow/Magenta/Black)
d). Font Opacity (Solid/Translucent/Transparent)
e). Background Color (White/Green/Blue/Red/Cyan/Yellow/Magenta/Black)
f). Background Opacity (Solid/Translucent/Transparent)
g). Window Color (White/Green/Blue/Red/Cyan/Yellow/Magenta/Black)

CONFIDENTIAL – DO NOT COPY Page 3-5
File No. SG-0262
h). Window Opacity (Solid/Translucent/Transparent)
g.H/VPosition
1.H.Position(0~64,32)
2.V.Position(0~32,16)
3. H-Size (0~100, 0)
4. V-Size (0~100, 20)
h. Parental:(Bold: Default)
Password (Default => 0000)
1. Cannel Block
2. US TV Rating
3. US Move Rating
4. Canadian English Rating
5. Canadian French Rating
6. DTV Rating
7. Block Unrated TV (NO/Yes)
8. Access Code Edit
i. Rest All Setting (OK/Cancel)

CONFIDENTIAL – DO NOT COPY Page 3-6
File No. SG-0262
RGB Mode
A. Picture Adjust:(Bold: Default)
a. Auto Adjust
b. Backlight (0~100, 90)
c. Contrast (0~100, 50)
d. Brightness (0~100, 50)
e. Color Temperature (6500/9300/Custom)
f. H-Size (0~255, 127)
g. H. Position (0~100, 61)
h. V. Position (0~100, 47)
i. Fine Tune (0~31, 16)

CONFIDENTIAL – DO NOT COPY Page 3-7
File No. SG-0262
B. Audio: (Bold: Default)
a. Audio Mode (Flat/Rock/Pop/Classic/Jazz)
b. Equalizer
c. Balance (-50~50, 0)
d. Surround (ON/OFF)
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

CONFIDENTIAL – DO NOT COPY Page 3-8
File No. SG-0262
D. Setup : (Bold: Default)
a. Language (English/ Français / Espaňol)
b. PIP
1. PIP Mode (OFF/PIP/POP)
2.PIPSource
3.
PIP Position(Bottom Right, Bottom Center, Bottom Left, Middle Left,
Top Left, Top Center, Top Right, Middle Right)
4.Size(Small/Medium/Large)
5. Audio Source (Main/PIP/POP)
c. Sleep Timer (OFF/30Min/60Min/90Min/120Min)
d. Wide
e. Input Naming
f. Reset All Setting (Cancel/OK)

CONFIDENTIAL – DO NOT COPY Page 3-9
File No. SG-0262
AV / COMPONENT MODE
A. Picture：(Bold: Default)
a. Picture Mode (Standard/Movie /Game/Vivid/Football/Golf/Basketball/Baseball/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. 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)
i. Reset Picture Mode (OK/Cancel)

CONFIDENTIAL – DO NOT COPY Page 3-10
File No. SG-0262
B. Audio：(Bold: Default)
a. Audio Mode (Flat/Rock/Pop/Classic/Jazz)
b. Equalizer
c. Balance (-50~50, 0)
d. Surround (ON/OFF)
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 (OK/Cancel)

CONFIDENTIAL – DO NOT COPY Page 3-11
File No. SG-0262
C. Setup：(Bold: Default)
a. Language (English/ Français / Espaňol)
b. PIP
1. PIP Mode (OFF/PIP/POP)
2. PIP Source
3. PIP Position(Bottom Right, Bottom Center, Bottom Left, Middle Left, Top Left, Top
Center, Top Right, Middle Right)
4. Size (Small/Medium/Large)
5. Audio Source (Main/PIP/POP)
c. Sleep Timer (OFF/30Min/60Min/90Min/120Min)
d. Wide
e. Input Naming
f. CC
1. CC on Mute (Off/On)
2. CC (OFF/CC1~CC4)
g. H/V Position
1.H.Position(0~64,32)
2.V.Position(0~32,16)
3. H-Size (0~100, 0)
4. V-Size (0~100, 20)
h. Parental:(Bold: Default)

CONFIDENTIAL – DO NOT COPY Page 3-12
File No. SG-0262
Password (Default => 0000)
1. Cannel Block
2. US TV Rating
3. US Move Rating
4. Canadian English Rating
5. Canadian French Rating
6. DTV Rating
7. Block Unrated TV (NO/Yes)
8. Access Code Edit
i. Rest All Setting (OK/Cancel)

CONFIDENTIAL – DO NOT COPY Page 3-13
File No. SG-0262
HDMI MODE
A. Picture：(Bold: Default)
a. Picture Mode (Standard/Movie /Game/Vivid/Football/Golf/Basketball/Baseball/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. 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)
i. Reset Picture Mode (OK/Cancel)