Vizio L37 Manuel utilisateur

Service Manual

V, Inc

320A Kalmus Drive Costa Mesa, CA 92626

TEL : +714-668-0588 FAX :+714-668-9099

Top Confidential

Model #: VIZIO L37

VIZIO L37 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 L37

VIZIO L37 Service Manual

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.

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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 ,TV and DTV out

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

withresolution lower than 1366x768 is magnified

7. Picture In Picture (PIP) funtion to show TV or VCR 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), sound setting, PIP, TV channel program, aspect and gamma or

reset all setting.

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File No. SG-0176

Chapter 2 Specification

1. LCD CHARACTERISTICS

Type: WXGA TFT LCD

Size: 37 inch

Display Size: 37.02 inches (940.3mm) diagonal

Outline Dimension: 877.0/878.0 mm (H) x 516.8 mm (V) x 55.5 (D) mm (Typ.)

Pixel Pitch: 0.200mm x 0.600mm x RGB

Pixel Format: 1366 horiz. By 768 vert. Pixels RGB strip arrangement

Contrast ratio: 600(Typ)

Luminance, White: 500 cd/m2 (Typ)

Display Operating Mode: normally Black

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

Color Depth : 8-bit, 16.7 M colors

Viewing Angle (CR>10) : Viewing angle free ( R/L 176(Typ.), U/D 176(Typ.))

Power Consumption : Total 125Watt (Typ.) (Logic=4.5W, Lamp=120W [IBL=6.0mA] )

2. OPTICAL CHARACTERISTICS

Viewing Angle by Contrast Ratio :

Left: 88°typ.

Right: 88°typ.

Top: 88°typ.

Bottom: 88°typ.

3. SIGNAL (Refer to the Timing Chart)

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

3.2 Input Signal :

3.2.1 RCA-type (Yellow) Composite Video Connector :

a. Signal Level Video (Y+C): Analog 1Vp-p/75

Sync (H+V): 0.3V below Video (Y+C)

b. Frequency H: 15.734KHz V:60Hz (NTSC)

3.2.2 Four-Pin mini DIN S-Video Connector

a. Pin Assignment

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File No. SG-0176

b. Signal Level Video (Y): Analog 0.1Vp-p/75

Video (C): Analog 0.286p-p/75

Sync (H+V): 0.3V below Video (Y)

c. Frequency H: 15.734KHz V: 60Hz (NTSC)

3.2.3 F-Type TV RF connector

3.2.3.1 NTSC System:

a. Signal Level: Analog 1Vp-p typical(45dB~90dB)

b. System :NTSC

c. Frequency: 55~801MHz (NTSC)

3.2.3.2 ATSC System

a. IF-output level: 1Vp-p minimum

b. System: ATSC

c. Frequency: 57~863MHz(ATSC)

3.2.4 PC connector 15 pin male D-sub connector

a. Pin Assignment :

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b. Signal Level Video (R, G, B) : Analog 0.7Vp-p/75

Sync (H, V) : TTL level

c. Sync Type TTL (Separate / Composite) or Sync. On-Green

d. Sync polarity Positive or Negative

e. Frequency : H: support to 30K~70KHz

V: support to 50~85Hz

Pixel Clock: support to 110MHz

3.2.5 HDMI Signal (Digital HD):

a. Pin Assignment

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b. Type: TYPE A

c. Polarity: Positive or Negative

d. Frequency: H: 15.734KHz V: 60Hz (NTSC-480i)

H: 31KHz V: 60Hz (NTSC-480p)

H: 45KHz V: 60Hz (NTSC-720p)

H: 33KHz V: 60Hz (NTSC-1080i)

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File No. SG-0176

3.2.6 Component signal (Analog HD1 and Analog HD2)

3.2.6.1 Analog HD1

a. Frequency H: 15.734KHz V: 60Hz (NTSC-480i)

H: 31KHz V: 60Hz (NTSC-480p)

H: 45KHz V: 60Hz (NTSC-720p)

H: 33KHz V: 60Hz (NTSC-1080i)

b. Signal level Y: 1Vp-p Pb: ±0.350Vp-p Pr: ±0.350Vp-p

c. Impedance 75

3.2.6.2 Analog HD2

a. Frequency H: 15.734KHz V: 60Hz (NTSC-480i)

H: 31KHz V: 60Hz (NTSC-480p)

H: 45KHz V: 60Hz (NTSC-720p)

H: 33KHz V: 60Hz (NTSC-1080i)

b. Signal level Y: 1Vp-p Pb: ±0.350Vp-p Pr: ±0.350Vp-p

c. Impedance 75

3.2.7 Audio Signal

a. Signal Level 1Vrms

b. Frequency Response 250Hz-20KHz

4.Input Connectors

RJ11, D-SUB15PIN ,mini jack(PC Audio in), HDMI CONNECT, RCAX2 (component),

RCAX3 (AUDIO in), RCAX3 (composite), RCAX3 (AUDIO in),F CONNECTx2,S-Video

5. POWER SUPPLY

Power Consumption: 220W MAX

Power OFF: to less than 3W MAX

6.Speaker

Output 6Ω/10W (max) X2

7. ENVIRONMENT

7-1. Operating Temperature: 5°C ~35°C (Ambient)

7-2. Relative Humidity: Ta= 35 °C, 10~90%RH (Non-condensing)

7-3. Altitude: 0~40,0000 feet (Non-Operating)

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File No. SG-0176

8. DIMENSIONS (Physical dimension)

Width: 959.9mm.

Depth: 311.0mm

Height: 748.4mm

9. WEIGHT (Physical weight)

a. Net: 25.9kgs

b. Gross: 33.5kg

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.

(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.

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