Vizio VU42L, VS42L Service Manual

Service Manual

Model #: VIZIO VU42L FHDTV10A

/VS42L FHDTV10A_MT5373

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 VU42L/VS42L FHDTV10A Service Manual

VINC Service Manual

VIZIO VU42L/VS42L FHDTV10A

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 VU42L/VS42L FHDTV10A 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 3W

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 42.0” WUXGA TFT LCD (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.

2. TFT-LCD OPTICAL CHARACTERISTICS

Contrast ratio: 1.CR : 900(Typ) 2. CR WITH AI : 1500(Typ)

Surface Luminance, White: 500 cd/m

2 (Typ)

Luminance Variation, δ=1.3 (Max)

Response Time = 8 mx (Max=10mx)

Viewing Angle (CR>10)

Left: 89°typ.

Right: 89°typ.

Top: 89°typ.

Bottom: 89°typ.

3. Input Connectors

RJ11, D-SUB15PIN (MINI, 3rows), Headphone, HDMIX2, RCAX3 (component),

RCAX2 (AUDIO in), RCAX3 (composite), RCAX2 (AUDIO in), S-Video, Tuner

4. POWER SUPPLY

Input Voltage Level: 90~240 Vac, 50/ 60 Hz

Power Consumption: 280W MAX

Power OFF: to less than 3W MAX

5. Speaker

Output 10W (max) X2

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6. ENVIRONMENT

6-1. Operating Temperature: 5c~35c (Ambient)

6-2. Operating Humidity: Ta= 35 °C, 90%RH (Non-condensing)

6-3. Operating Altitude: 0 - 14,000 feet (4267.2m)(Non-Operating)

7. DIMENSIONS (Physical dimension)

Dimensions with stand：

1066mm(W) x 765.4mm(H) x 269.2mm(D) inches

Dimension without stand：

1066mm(W) x 650.5mm(H) x 123.5mm(D) inches

8. WEIGHT (Physical weight)

a. Net 36.0 +/- 0.5 kgs

b. Gross 43+/- 0.5 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.

(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.

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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. DNC (Low/Medium/Strong/Off)

2. Black level extender (Off/On)

3. White Peak Limiter (On/Off)

4. CTI (Low/Medium/Strong/Off)

5. Flesh Tone (Off/On)

6. Adaptive Luma (Off/On)

7. DCR (Off/On)

B. Audio：(Bold: Default)

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a. Volume (0~100, 25)

b. Bass (0~100, 50)

c. Treble (0~100, 50)

d. Balance (-50~50, 0)

e. Surround (ON/OFF)

f. Speakers (ON/OFF)

C. TV：(Bold: Default)

a. Tuner Mode (Cable/Air)

b. Auto Search

c. Skip Channel

d. Digital Audio Out (PCM/Dolby Digital/OFF)

e. Time Zone (Eastern/Indiana/Central/Mountain/Arizona/Pacific/Alaska/Hawaii)

f.

DAYLIGHT SAVING (ON, OFF)

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D. Setup：(Bold: Default)

a. Language (English/ Français / Espaňol)

b. Sleep Timer (OFF/30Min/60Min/90Min/120Min)

c. Analog CC (OFF/CC1~4/TT1~4)

d. Digital CC (OFF/CC1~4/Service1~6)

e. Digital CC Style

1. Caption Style (As Broadcaster/Custom)

2. Size (Large/Small/Medium)

3. Font Color (White/Green/Blue/Red/Cyan/Yellow/Magenta/Black)

4. Font Opacity (Solid/Translucent/Transparent)

5. Background Color (White/Green/Blue/Red/Cyan/Yellow/Magenta/Black)

6. Background Opacity (Solid/Translucent/Transparent)

7. Window Color (White/Green/Blue/Red/Cyan/Yellow/Magenta/Black)

8. Window Opacity (Solid/Translucent/Transparent)

f. PIP

1. Style (OFF/PIP/POP)

2. Input (TV, AV1, AV2, COMPONENT1, COMPONENT2, RGB, HDMI1, HDMI2)

3. Size (Small/Medium/Large)

4.

Position(Bottom Right, Bottom Center, Bottom Left, Middle Left, Top Left,

Top Center, Top Right, Middle Right)

g. H/V Position

1. H. Position (0~64, 32)

2. V. Position (0~32, 16)

3. V. size (0~100, 20)

h. Rest All Setting (OK/Cancel)

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E. Parental：(Bold: Default)

Password (Default => 0000)

a. Cannel Block

b. TV Rating

c. Move Rating

d. Block Unrated TV (NO/Yes)

e. Access Code Edit

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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, 65)

h. V-Position (0~100, 49)

i. Fine Tune (0~31, 17)

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B. Audio：(Bold: Default)

a. Volume (0~100, 25)

b. Bass (0~100, 50)

c. Treble (0~100, 50)

d. Balance (-50~50, 0)

e. Surround (ON/OFF)

f. Speakers (ON/OFF)

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D. Setup：(Bold: Default)

a. Language (English/ Français / Espaňol)

b. Sleep Timer (OFF/30Min/60Min/90Min/120Min)

c. Analog CC (OFF/CC1~4/TT1~4)

d. Digital CC (OFF/CC1~4/Service1~6)

e. Digital CC Style

1. Caption Style (As Broadcaster/Custom)

2. Size (Large/Small/Medium)

3. Font Color (White/Green/Blue/Red/Cyan/Yellow/Magenta/Black)

4. Font Opacity (Solid/Translucent/Transparent)

5. Background Color (White/Green/Blue/Red/Cyan/Yellow/Magenta/Black)

6. Background Opacity (Solid/Translucent/Transparent)

7. Window Color (White/Green/Blue/Red/Cyan/Yellow/Magenta/Black)

8. Window Opacity (Solid/Translucent/Transparent)

f. PIP

1. Style (OFF/PIP/POP)

2. Input (TV, AV1, AV2, COMPONENT1, COMPONENT2, RGB, HDMI1, HDMI2)

3. Size (Small/Medium/Large)

4.

Position(Bottom Right, Bottom Center, Bottom Left, Middle Left, Top Left,

Top Center, Top Right, Middle Right)

g. H/V Position

1. H. Position (0~64, 32)

2. V. Position (0~32, 16)

3. V. size (0~100, 20)

h. Rest All Setting (OK/Cancel)

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AV / COMPONENT MODE

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. DNC (Low/Medium/Strong/Off)

2. Black level extender (Off/On)

3. White Peak Limiter (On/Off)

4. CTI (Low/Medium/Strong/Off)

5. Flesh Tone (Off/On)

6. Adaptive Luma (Off/On)

7. DCR (Off/On)

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B. Audio：(Bold: Default)

a. Volume (0~100, 25)

b. Bass (0~100, 50)

c. Treble (0~100, 50)

d. Balance (-50~50, 0)

e. Surround (ON/OFF)

f. Speakers (ON/OFF)

C. Setup：(Bold: Default)

a. Language (English/ Français / Espaňol)

b. Sleep Timer (OFF/30Min/60Min/90Min/120Min)

c. Analog CC (OFF/CC1~4/TT1~4)

d. Digital CC (OFF/CC1~4/Service1~6)

e. Digital CC Style

1. Caption Style (As Broadcaster/Custom)

2. Size (Large/Small/Medium)

3. Font Color (White/Green/Blue/Red/Cyan/Yellow/Magenta/Black)

4. Font Opacity (Solid/Translucent/Transparent)

5. Background Color (White/Green/Blue/Red/Cyan/Yellow/Magenta/Black)

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6. Background Opacity (Solid/Translucent/Transparent)

7. Window Color (White/Green/Blue/Red/Cyan/Yellow/Magenta/Black)

8. Window Opacity (Solid/Translucent/Transparent)

f. PIP

1. Style (OFF/PIP/POP)

2. Input (TV, AV1, AV2, COMPONENT1, COMPONENT2, RGB, HDMI1, HDMI2)

3. Size (Small/Medium/Large)

4.

Position(Bottom Right, Bottom Center, Bottom Left, Middle Left, Top Left,

Top Center, Top Right, Middle Right)

g. H/V Position

1. H. Position (0~64, 32)

2. V. Position (0~32, 16)

3. V. size (0~100, 20)

h. Rest All Setting (OK/Cancel)

D. Parental：(Bold: Default)

Password (Default => 0000)

a. Cannel Block

b. TV Rating

c. Move Rating

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d. Block Unrated TV (NO/Yes)

e. Access Code Edit

HDMI MODE

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)

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i. Advanced Video

1. DNC (Low/Medium/Strong/Off)

2. Black level extender (Off/On)

3. White Peak Limiter (On/Off)

4. CTI (Low/Medium/Strong/Off)

5. Flesh Tone (Off/On)

6. Adaptive Luma (Off/On)

7. DCR (Off/On)

B. Audio：(Bold: Default)

a. Volume (0~100, 25)

b. Bass (0~100, 50)

c. Treble (0~100, 50)

d. Balance (-50~50, 0)

e. Surround (ON/OFF)

f. Speakers (ON/OFF)

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C. Setup：(Bold: Default)

a. Language (English/ Français / Espaňol)

b. Sleep Timer (OFF/30Min/60Min/90Min/120Min)

c. Analog CC (OFF/CC1~4/TT1~4)

d. Digital CC (OFF/CC1~4/Service1~6)

e. Digital CC Style

1. Caption Style (As Broadcaster/Custom)

2. Size (Large/Small/Medium)

3. Font Color (White/Green/Blue/Red/Cyan/Yellow/Magenta/Black)

4. Font Opacity (Solid/Translucent/Transparent)

5. Background Color (White/Green/Blue/Red/Cyan/Yellow/Magenta/Black)

6. Background Opacity (Solid/Translucent/Transparent)

7. Window Color (White/Green/Blue/Red/Cyan/Yellow/Magenta/Black)

8. Window Opacity (Solid/Translucent/Transparent)

f. PIP

1. Style (OFF/PIP/POP)

2. Input (TV, AV1, AV2, COMPONENT1, COMPONENT2, RGB, HDMI1, HDMI2)

3. Size (Small/Medium/Large)

4.

Position(Bottom Right, Bottom Center, Bottom Left, Middle Left, Top Left,

Top Center, Top Right, Middle Right)

g. H/V Position

1. H. Position (0~64, 32)

2. V. Position (0~32, 16)

3. V. size (0~100, 20)

h. 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, AV 2: 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: 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 solvents

(

MONITOR DISPLAY NOTHING (PC MODE)

Start

LED is lighted

Orange)

N0

1. Is Power board output
+5V(F2)?

2. Is J1 connector good?

3. Is DC-DC OK?

4. Is U8 pin2 (3.3V) working ok?

LED is lighting?

Is backlight on?

Yes

Yes

N0

N0

N0

It is in power saving

1. Check video cable

2. Is the timing supported?

3. Check sync input

4. Check VGASOG rout if analog

(SOG) (C88)

1.Check J1 PIN 13 (5V)

2.Is inverter ok?

3.Is Power Board ok?

Yes
Yes

N0

U11has no data

out?

Yes

It means data to LVDS

1. Is J7 connecting OK?

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

3. Is panel ok?

4.

Check P3 D-sub Input correct

5. Check analog input route

END

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(TV,

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

Start

N0

Input signal good?

1. Check video

2. Check DVD player

Yes

U14 input correct?

Yes

LVDS output correct?

Yes

1.Chcak J5 Connect is good?

2.Is panel working ok?

END

N0

N0

1. Check P11&J4 signal

2. Check signal between P2 and

U14 (IF AV1/AV2 mode)

3. Check Tuner &U14 (IF TV mode)

4. Check J4 (IF S-Video)

5. Check U14 POWER +3.3V

1.Check LVDS LINE

2.Check U4 clock (27MHz)(X1)

3.Check U4 power

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(COMPONENT1,

2) IS NOT DISPLAY CORRECTLY

Star t

N0

Is input signal good?

Yes

N0

Is P1 input correct?

Yes

N0

Is U14 input correct?

1. Check video

2. Check host’s setting

1. Check signal from P1

2. Check system power 12V& 5v

1. Check signal between U14&P1

2. Check X1 Clock (27MHZ)

Yes

Is LVDS output

correct ?

Yes

1 .Is J7 connected good?

2. Is panel working ok?

END

N0

1. Check U14

2. Check U14 power 3.3V&1.28v&1.3v & 1.5V

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(

HDMI) IS NOT DISPLAY CORRECTLY

Star t

Input signal good?

N0

1. Check video

2. Check host’s setting

U22 no data out ?

U14 input correct?

1.Is J7 connected good?

2.Is panel working ok?

Yes

Yes

Yes

N0

N0

1. Check p6&p7 connect

2. Check the pin18 & 19 of P6 & P7

3. Check the pin 6 of U23 & U25

1. Check U14 power
2 Check between signal U14 and

U22

3. Check U14 clock 27MHZ

Yes

END

Yes

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TROUBLE

OF DC-DC CONVERTER

Start

J1 PIN 9 10,11,

Yes

J1 PIN 2,3,4,5

Yes

U32 pin 5 6 7 8

Yes

U2, U8 & U33 pin2

N0

N0

N0

N0

The voltage is about + 5V

1. Check power board

2. Check power cable, F2 & connection J1

3. Check U8 pin1 (+5V) & pin2 (+3.3V)

The voltage is about + 12V while power switch on

1. Is J1 connection good

2. Check J1 Pin1 is up to about 3.3V?

3. Check power board

4. Check F1.

The voltage is about +5V while power switch on

1. Check F2 & U1

2. Check OPWRSB (R20)

3. Check U1 pin1&2 or pin 3&4, should have -1V more.

The voltage is about +3.3V

1. Check F2 & U1

2. Check U2, U4 & U33

Yes

CE15 pin 1

Yes

L7 pin2

Yes

U10 pin2

U3 pin1 & pin2

END

N0

N0

N0

The voltage is about +1.6V

1. Check F2 & U1

2. Check U6

The voltage is about +1.2V while power switch on

1. Check F2 & U1

2. Check U5

The voltage is about +2.6V while power switch on

1.Check J1 Connect

2.Check U10

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

1. Check F1

2. Check U3 pin1 (+12V) & U3 pin2 (+5V)

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TROUBLE

OF EDID READING

Start

Is Analog DDC OK?

Yes

Is HDMI DDC OK?

Yes

N0

Support DDC1/2B

1. Analog cable ok?
2 .Check signal (U21 to P3)

3. Check U21 Voltage

4. Is protocol compliant?

N0

Support DDC1/2B

1. Analog cable ok?

2. Check signal (U23 to P6)

3. Check signal (U25 to P7)

4. Is protocol compliant?

END

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