Vizio VP50HDTV20A Service Manual

Service Manual

Model #: VIZIO VP50 HDTV20A

(LPL/Samsung Panel)

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 VP50HDTV120A_LPL/Samsung Service Manual

VINC Service Manual

VIZIO VP50HDTV120A_LPL/Samsungl

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 VP50HDTV120A_LPL/Samsung 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 HDTV, composite video, HDMI ;,Componet in ,

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

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

image with resolution lower than 1366x768 is magnified

7. Picture In Picture (PIP) function to show TV or VCR/DVD images

8. Power saving to reduce consumption power too less than 3W

9. 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. PDP CHARACTERISTICS

PDP50X4 (50”WXGA PDP MODULE)

Item Specification

Panel

Display Pixels 1365(H) x 768 (V) pixels

Display Cells 4098 (H) x 768 (V) cells

Pixel Pitch 0.810 mm (H) X 0.810mm (V)

Pixel Type Non-stripe

Color Depth 1,024 (R) x 1,024 (G) x 1,024 (B) colors

Active Display Area 1105.65mm (H) x 622.08 mm(V)

Contrast ratio (panel spec)

Color Coordinates (typical)

White (Panel spec) x=0.285±0.02, y=0.285±0.02

White (w/glass filter) Warm (5400K)

Standard (6500K)

Cool (9300K)

User: x=0.285±0.03, y=0.285±0.03 RGB

SDI S50HW-YD02 LGE X4T35

13000:1 (Typical,

dark room)

15000:1 (Typical,

dark room)

Note

Viewing Angle(L/R/U/D) Free

Power Consumption Max. 500 W (Full-White)

Weight 22.2±0.5 Kg (Net 1EA)

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2.Input Connectors

RJ11, D-SUB15PIN (MINI, 3rows), HDMIX3, RCAX2 (component), RCAX2 (AUDIO

in), RCAX2 (composite), RCAX2 (AUDIO in), Tuner, S-Video X1

3.Output Connectors

Stereo RCA Jack (Analog audio out) , SPDIF Out (Optical Audio)

4. POWER SUPPLY

Power Consumption: 550W MAX

Power OFF: to less than 3W MAX

5.Speaker

Output 10W (max) X2

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 (Non-Operating)

7. DIMENSIONS (Physical dimension)

Width: 1241.0mm

Height: 856.3mm

Depth: 291.2mm

8. WEIGHT (Physical weight)

TV net 52.6kg

9.Please pay attention to the followings when you use this PDP module.

9-1. MOUNTING PRECAUTIONS

(1) You must mount a module using holes arranged in four corners or four sides.

(2) You should consider the mounting structure so that uneven force (ex. Twisted

stress) is not applied to the module. And the case on which a module is mounted

should have sufficient strength so that external force is not transmitted directly to

the module.

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(3) Please attach the surface transparent protective plate to the surface in order to

protect the polarizer.

Transparent protective plate should have sufficient strength in order to the resist

external force.

(4) You should adopt radiation structure to satisfy the temperature specification.

(5) Acetic acid type and chlorine type materials for the cover case are not desirable

because the former generates corrosive gas of attacking the polarizer at high

temperature and the latter causes circuit break by electro-chemical reaction.

(6) Do not touch, push or rub the exposed polarizes with glass, tweezers or

anything harder than HB pencil lead. And please do not rub with dust clothes

with chemical treatment.

Do not touch the surface of polarizer for bare hand or greasy cloth.(Some

cosmetics are detrimental to the polarizer.)

(7) When the surface becomes dusty, please wipe gently with absorbent cotton or

other soft materials like chamois soaks with petroleum benzene. Normal-hexane

is recommended for cleaning the adhesives used to attach front / rear polarizers.

Do not use acetone, toluene and alcohol because they cause chemical damage

to the polarizer.

(8) Wipe off saliva or water drops as soon as possible. Their long time contact with

polarizer causes deformations and color fading.

(9) Do not open the case because inside circuits do not have sufficient strength.

9-2. 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) 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.

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

occur.

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(5) 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.

9-3. 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

Main unit button

Power

MENU

CH ▲

CH ▼

VOL +

VOL -

Input

On Screen Display
TV Source

A. PICTURE：

a. PICTURE MODE

(CUSTOM/ STANDARD / MOVIE / GAME)

b. BRIGHTNESS (0~100)

c. CONTRAST (0~100)

d. COLOR (0~100)

e. TINT (-32~32)

f. SHARPNESS (0~7)

g. COLOR TEMPERATURE

(CUSTOM/COOL/NORMAL/WARM)

h. ADVANCED VIDEO

h-1. DNR(OFF/LOW/MEDIUM/STRONG)

h-2. BLACK LEVEL EXTENDER (ON/OFF)

h-3. WHITE PEAK LIMITATOR (ON/OFF)

h-4 CTI(OFF/LOW/MEDIUM/STRONG)

h-5 FLESH TONE (ON/OFF)

h-6 ADAPTIVE LUMA (ON/OFF)

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B. AUDIO：

a. VOLUME (0~100)

b. BASS (0~100)

c. TREBLE (0~100)

d. Balance (-50~50)

e. Surround (ON/OFF)

f. SPEAKERS (ON/OFF)

C. TV：

a. TUNER MODE (ANTENNA/CABLE)

b. AUTO SEARCH (RUN)

c. SKIP CHANNEL (TABLE)

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

e. TIME ZONE

(HAWALL/EASTTERN/INDIANA/CENTRAL/MOUNTAIN/ARIZONA/PACIFIC/ALASKA)

f. Daylight Saving(ON/OFF)

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D. SETUP：

a. LANGUAGE (ENGLISH/FRENCH/SPANISH)

b. PIP

b-1 Style OFF

b-2. Style PIP

a) Input (COMPONENT1/COMPONENT2/RGB/HDMI1/HDMI2/HDMI3)

b) Position (Bottom Right/ Bottom Center/Bottom Left/middle Left/Top Left /Top

Center/Top Right/Middle Right

c) Size (Small /Medium / Large)

b-3. Style POP Input (COMPONENT1/COMPONENT2/RGB/HDMI1/HDMI2/HDMI3)

c. SLEEP TIMER (OFF/30/60/90/120)

d. ANALOG CC (OFF/CC1/CC2/CC3/CC4)

e. DIGITAL CC(OFF/SERVICE1/ SERVICE2/

SERVICE3/ SERVICE4/ SERVICE5/ SERVICE6)

f. DIGITAL CC STYLE

f-1. CAPTION STYLE

(AS BROADCASTER/CUSTOM)

f-2. FONT SIZE(SMALL/MEDIUM/LARGE)

f-3. FONT COLOR

(GREEN/BLUE//RED/CYAN/YELLOW/MAGENTA/BLACK/WHITE)

f-4. FONT OPACITY

(SOLID/TRANSLUCENT/TRANSPARENT)

f-5. BACKGROUND COLOR

(GREEN/BLUE//RED/CYAN/YELLOW/MAGENTA/BLACK/WHITE)

f-6. BACKGROUND OPACITY

(SOLID/TRANSLUCENT/TRANSPARENT)

f-7. WINDOW COLOR

(GREEN/BLUE//RED/CYAN/YELLOW/MAGENTA/BLACK/WHITE)

f-8. WINDOW OPATITY

(SOLID/TRANSLUCENT/TRANSPARENT)

g. Image Cleaner

h. RESET ALL SETTING

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E. PARENTAL：

a. PASSWORD

a-1. CHANNEL BLOCK

a-2. TV RATING

a-3. MOVIE RATING

a-4 Check for New DTV rating

a-4. BLOCK TV UNRATED

a-5. ACCESS CODE EDIT

RGB Mode

A. PICTURE ADJUST：

a. AUTO Adjust (Run)

b. BRIGHTNESS (0~100)

c. CONTRAST (0~100)

d. COLOR TEMPERATURE(CUSTOM, 6500K,9300K)

e. H-SIZE (0~255)

f. H-POSITION (0~100)

g. V-POSITION (0~100)

h. FINE TUNE (0~31)

B. AUDIO：

a. VOLUME (0~100)

b. BASS (0~100)

c. TREBLE (0~100)

d. Balance (-50~50)

e. Surround (ON/OFF)

f. SPEAKERS (ON/OFF)

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C. SETUP：

a. LANGUAGE (ENGLISH/FRENCH/SPANISH)

b. PIP

b-1 Style OFF

b-2. Style PIP

a) Input (TV/AV1/AV2/AV3/HDMI1/HDMI2/HDMI3)

b) Position (Bottom Right/ Bottom Center/Bottom Left/middle Left/Top Left /Top

Center/Top Right/Middle Right

c) Size (Small /Medium / Large)

b-3. Style POP

Input (COMPONENT1/COMPONENT2/RGB/HDMI1/HDMI2/HDMI3)

c. SLEEP TIMER (OFF/30/60/90/120)

d. Image Cleaner

e. RESET ALL SETTING

HDMI MODE

A. PICTURE：

a. PICTURE MODE (CUSTOM/ STANDARD /MOVIE / GAME)

b. BRIGHTNESS (0~100)

c. CONTRAST (0~100)

d. COLOR (0~100)

e. TINT (-32~32)

f. SHARPNESS (0~7)

g. COLOR TEMPERATURE

(CUSTOM/COOL/NORMAL/WARM)

h. ADVANCED VIDEO

h-1. DNR(OFF/LOW/MEDIUM/STRONG)

h-2. BLACK LEVEL EXTENDER (ON/OFF)

h-3. WHITE PEAK LIMITATOR (ON/OFF)

h-4 CTI(OFF/LOW/MEDIUM/STRONG)

h-5 FLESH TONE (ON/OFF)

h-6 ADAPTIVE LUMA (ON/OFF)

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B. AUDIO：

a. VOLUME (0~100)

b. BASS (0~100)

c. TREBLE (0~100)

d. Balance (-50~50)

e. Surround (ON/OFF)

f. SPEAKERS (ON/OFF)

C. SETUP：

a. LANGUAGE (ENGLISH/FRENCH/SPANISH)

b. PIP

b-1 Style OFF

b-2. Style PIP

a) Input (TV/AV1/AV2/AV3/COMPONENT1/COMPONENT2)

b) Position (Bottom Right/ Bottom Center/Bottom Left/middle Left/Top Left /Top

Center/Top Right/Middle Right

c) Size (Small /Medium / Large)

b-3. Style POP

Input (COMPONENT1/COMPONENT2/RGB/HDMI1/HDMI2/HDMI3)

c. SLEEP TIMER (OFF/30/60/90/120)

d. Image Cleaner

e. RESET ALL SETTING

Video Sources：

AV1、AV2、COMPONENT1、COMPONENT2

A. PICTURE：

a. PICTURE MODE (CUSTOM/ STANDARD /MOVIE / GAME)

b. BRIGHTNESS (0~100)

c. CONTRAST (0~100)

d. COLOR (0~100)

e. TINT (-32~32)

f. SHARPNESS (0~7)

g. COLOR TEMPERATURE(CUSTOM/COOL/NORMAL/WARM)

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h. ADVANCED VIDEO

h-1. DNR(OFF/LOW/MEDIUM/STRONG)

h-2. BLACK LEVEL EXTENDER (ON/OFF)

h-3. WHITE PEAK LIMITATOR (ON/OFF)

h-4 CTI(OFF/LOW/MEDIUM/STRONG)

h-5 FLESH TONE (ON/OFF)

h-6 ADAPTIVE LUMA (ON/OFF)

B. AUDIO：

a. VOLUME (0~100)

b. BASS (0~100)

c. TREBLE (0~100)

d. Balance (-50~50)

e. Surround (ON/OFF)

f. SPEAKERS (ON/OFF)

C. SETUP：

a. LANGUAGE (ENGLISH/FRENCH/SPANISH)

b. PIP

b-1 Style OFF

b-2. Style PIP

a) Input (RGB/HDMI1/HDMI2/HDMI3/COMPONENT1/COMPONENT2) (For AV Input)

b) Input (Tv/HDMI1/HDMI2/HDMI3/AV/AV2/AV3) (For COMPONENT Input)

c) Position (Bottom Right/ Bottom Center/Bottom Left/middle Left/Top Left /Top

Center/Top Right/Middle Right

d) Size (Small /Medium / Large)

b-3. Style POP Input (COMPONENT1/COMPONENT2/RGB/HDMI1/HDMI2/HDMI3)

c. SLEEP TIMER (OFF/30/60/90/120)

d. Image Cleaner

e. RESET ALL SETTING

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D. PARENTAL：

a. PASSWORD

a-1. CHANNEL BLOCK

a-2. TV RATING

a-3. MOVIE RATING

a-4 Check for New DTV Rating

a-5. BLOCK TV UNRATED

a-6. ACCESS CODE EDIT

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Chapter 9 Trouble shooting

MONITOR DISPLAY NOTHING (PC MODE)

Start

LED is lighted

N0

1. Is Power board output
+5VSB &DV12?

2. Is J10 connector good?

3. Is DC-DC OK?

4. Is U1 (+5V) 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 VGA SOG rout if analog

(SOG)

1.Check J10 PIN14

2.Is Power Board ok?

Yes
Yes

U14 no data out?

Yes

N0

It means data to LVDS

1.Is J7 connecting OK?

2.Check J1 +5V & +12V

3.Is panel ok?

4.

Check P3 D-sub Input correct

5. Check analog input route

END

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(TV,

COMPOSITE VIDEO ) IS NOT DISPLAY CORRECTLY

Star t

N0

Input signal good?

1.Check video

2.Check DVD player

Yes

U14 input correct?

Yes

U14 output correct?

Yes

LVDS output correct?

Yes

1.Chcak J7 Connect is good?

2.Is panel working ok?

END

N0

N0

N0

1.Check P11(VIDEO) signal

2.Check signal between U14 (IF IN AV
mode)

3.Check Tuner & U13 (IF TV mode)

1. Check U14 :DV33&DV12&AV15&AV12

2. Check X1 is OK?

1.Check LVDS LINE

2.Check U14 clock (27MHz)

3.Check LVDS 5V or 12V

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(COMPONENT)

IS NOT DISPLAY CORRECTLY

Star t

N0

Input signal good?

Yes

N0

P1 input correct?

Yes

N0

U14 input correct?

Yes

N0

1.Check video

2.Check host’s setting

1.Check signal between P1

2.Check power 12V& 5v

1.Check signal between U14&P1

2.Check U14 Clock (27MHZ)

3.Check U14 :DV33&DV12&AV15&AV12

LVDS output correct ?

Yes

1.Is J7 connected good?

2.Is panel working ok?

END

1.Check U14

2. Check LVDS 5V or 12V

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(

HDMI) IS NOT DISPLAY CORRECTLY

Star t

Input signal good?

N0

1.Check video

2.Check host’s setting

U22 input correct?

U14 no data out ?

1.Is J7 connected good?

2.Is panel working ok?

Yes

Yes

N0

N0

1.Check p6 & p7& P13 connect

2.Check U22 signal

1.Check U14 power

2.Check between signal U22 and U14

3.Check U14 clock 27MHZ

Yes

END

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ROUBLE

OF DC-DC CONVERTER

Star t

Yes

J10 PIN10,11,12

Yes

J10 PIN 2,3

Yes

U1 pin 5 6 7 8

Yes

U4,U2 pin2

Yes

U10 pin2

N0

N0

N0

N0

N0

The voltage is about + 5V

1.Check power board

2.Check power cable connection J10

The voltage is about + 12V while power switch on

1.J10 connection good

2.Check J10 Pin2,3 transform +5V_TUNER

3.Check power board

The voltage is about +5V while power switch on

1.J10 connection good

2. Check U14 OPWRSB & OPCTRL2 Pin

The voltage is about +3.3V

The voltage is about +2.6V

Yes

U33 pin2

Yes

U7 pin2

Yes

U9 pin2

Yes

N0

N0

U35 pin2

END

The voltage is about +3.3V

The voltage is about +1.2V

The voltage is about +1.5V

The voltage is about +3.3V

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TROUBLE

OF DDC READING

Start

Yes

Analog DDC

Yes

HDMIDDC

Yes

N0

N0

Support DDC1/2B

1.Analog cable ok?

2.Check signal (U21 to P3)

3.Check U21 Voltage

4.Is compliant protocol?

Support DDC1/2B

1.Analog cable ok?

2.Check signal (U23 to P6)

3.Check signal (U25 to P7)

4.Check signal (U26 to P13)

5.Is compliant protocol?

END

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)

)

(TV_SIDE,

AUDIO) IS NOT DISPLAY CORRECTLY

Start

N0

Input signal good?

Yes

N0

J1 input correct?

Yes

N0

U1.U2 output correct?

Yes

N0

U7.U8 signal correct?

1. Check Audio source

2. Check the player of source

1. Check signal of Main Board

2. Check signal of Audio Board (J1)

3. Check the wire of Main Board to
Audio Board

1. Check the output volt of U1 and U2.

1. Check C200(Ch R) and C201(Ch

and C271 (Ch CT

L

Yes

N0

U7.U8 Volt correct?

Yes

N0

U7.U8 output correct?

Yes

END

1. Check VCC of U7 and U8.

2. Check 1/2VCC of U7 and U8
(R202.R203.R271).

3. Check ZD2(Ch R) and ZD3(Ch L)

and ZD4 (Ch CT)

1. Check feedback resistor and

capacitor.

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(SUBWOOFER_SIDE,

AUDIO) IS NOT DISPLAY CORRECTLY

Start

N0

Input signal good?

Yes

N0

J1 input correct?

Yes

N0

U1~U6output correct?

Yes

N0

U7.U8 signal correct?

1. Check Audio source

2. Check the player of source

1. Check signal of Main Board

2. Check signal of Audio Board (J1)

3. Having TX and RX module or not?

1. Check the output volt of U1 ~ U6.

1. Check C200(Ch R) and C201(Ch L)
and C170 (Ch SW) and C171 (VB)

Yes

N0

U7.U8 Volt correct?

Yes

N0

U7.U8 output correct?

Yes

END

1. Check VCC of U7 and U8.

2. Check 1/2VCC of U7 (R202.R203).

3. Check ZD2(Ch R) and ZD3(Ch L)

and ZD4 (Ch CT)

1. Check feedback resistor and

capacitor.

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