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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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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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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(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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D. 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/CC1~4/TT1~4)

3. Digital CC Style

a). Caption Style (As Broadcaster/Custom)

b). Font Size (Large/Small/Medium)

c). Font Color (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)

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h). Window Opacity (Solid/Translucent/Transparent)

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)

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)

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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)

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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

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D. 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. Reset All Setting (Cancel/OK)

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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)

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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)

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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)

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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)

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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)

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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)

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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. 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)

g. Rest All Setting (OK/Cancel)

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[INPUT]

“INPUT” could supply an interface providing a list. The list shows input sources

and provides the choices of different sources. The list includes items as below:

A. TV: Analog TV or digital TV

B. AV1, AV2: Composite (AV) signal

C. Component1, Component2: Color difference (YPbPr) video signals.

D. RGB: Video Graphics Array (VGA) or D-sub video signals.

E. HDMI1, HDMI2, HDMI3, HDMI4: High Definition Multimedia Interface (HDMI)

multimedia signals.

Note： The list of PIP provides the choices of different sources on sub-screen.

[INFO]

“INFO” button could show an information bar which displays the information about

the input signal on our LCD TV.

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Chapter 9 Trouble shooting

(

)

MONITOR DISPLAY NOTHING (PC MODE)

Start

LED is lighted

OrangeÎgreen

N0

1. Is Power board output +5VSB (F1)?

2. Is J1 connector of MB good?

3. Is DC-DC OK?

4. Is U22 pin2 (+3V3SB) working ok?

LED is lighting?

Yes

N0

N0

It is in power saving

1. Check video cable

2. Is the timing supported?

3. Check sync input

4. Check VGA SOG rout if analog (SOG) (C132)

Panel has no data

out?

Yes

It means data to LVDS

1. Is J8 connecting OK?

2. Check J1 +5VSB (F1)&+12V (F2)

3. Is panel ok?

4. Check P5 D-sub Input correct

5. Check analog input route

Yes

END

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(TV, COMPOSITE VIDEO1, 2, S-VIDEO) IS NOT DISPLAY CORRECTLY

Start

N0

Input signal good?

Yes

1. Check video

2. Check DVD player

N0

U13 input correct?

Yes

N0

LVDS output

Yes

1. Check J8 Connect is good?

2. Is panel working ok?

END

1. Check P14 signal

2. Check signal between P14 and U13 (IF AV1 mode)

3. Check Tuner & U13 (IF TV mode)

4. Check P3 (IF AV2 mode)

5. Check U13 POWER 3.3V

1. Check LVDS LINE

2. Check U13 clock (60MHz)(X1)

3. Check U13 Power

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(COMPONENT1,

2) IS NOT DISPLAY CORRECTLY

Start

N0

Input signal good?

Yes

N0

P3 input correct?

Yes

N0

U13 input correct?

1. Check video
’

1. Check signal from P3 or P14

2. Check system power 12V& 5V(5VSB)

1. Check signal between U13 & P3 or P14

2. Check Y1 Clock (60MHZ)

Yes

Is LVDS output

Yes

1 .Is J8 connected good?

2. Is panel working ok?

END

N0

1. Check U13

2. Check U13 power 3.3V&2.5v&1.8v&1.25v

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(

HDMI) IS NOT DISPLAY CORRECTLY

Start

Input signal

N0

1. Check video

2. Check host’s setting

U13 no data out ?

1.Is J9 connected good?

2.Is panel working ok?

Yes

Yes

N0

1. Check P7 & &P8&P9 connect

2. Check the pin18 & 19 of P7 & P8& P9

3. Check the pin 6 of U32 & U33& U34

Yes

END

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TROUBLE

OF DC-DC CONVERTER

Start

J1 PIN10,11,12

Yes

J1 PIN 2,3,4

Yes

U14 pin 5 6 7 8

No

No

No

The voltage is about + 5V(+5VSB)

1. Check power board

2. Check power cable, F1 & connection J1

3. Check U22 pin1 (+5VSB) & pin2 (+3V3SB)

The voltage is about + 12V while power switch on

1. Is J1 connection good

2. Check J1 Pin1 is up to about 3.3V (+3V3SB)?

3. Check power board

4. Check F2.

The voltage is about +5V while power switch on

1. Check F1 & U14

2. Check OPWRSB (R19)

3. Check U14 pin1&2 or pin 3&4, should have -1V more.

Yes

No

U15, U17,U22

Yes

No

U21 pin2

Yes

No

U19 pin2

U16 pin1 & pin2

Yes

No

The voltage is about +3.3V

1. Check F1 & U14

2. Check U15, U17,U22

The voltage is about +1.2V while power switch on

1. Check F1 & U14

2. Check U21 pin2

The voltage is about +2.5V while power switch on

1.Check J1 Connect

2.Check U19 pin2

The voltage is about +12V to +5V (for Tuner) while power
switch on

1. Check F2

2. Check U16 pin1 (+12V_AP) & U16 pin2 (+5V_TUNER)

END

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TROUBLE

OF EDID READING

Star t

Is Analog DDC OK?

Yes

Is HDMI DDC OK?

Yes

N0

Support DDC1/2B

1. Analog cable ok?
2 .Check signal (U31 to P5)

3. Check U31 Voltage

4. Is protocol compliant?

N0

Support DDC1/2B

1. Analog cable ok?

2. Check signal (U32 to P7)
3 Check signal (U 33 to P8)

4. Check signal (U34 to P9)

5. Is protocol compliant?

END

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