Vizio VOJ320F1A-MT5382-LGD User manual

Service Manual
V, Inc
320A Kalmus Drive Costa Mesa, CA 92626
TEL : [phone] FAX :[phone]
Top Confidential
Model #: VIZIO
VOJ320F1A_MT5382_LGD

VIZIO VOJ320F1A_MT5382_LGD 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

VINC Service Manual
VIZIO VOJ320F1A_MT5382_LGD
VIZIO VOJ320F1A_MT5382_LGD 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-0284
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 to less than 0.5W.
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-0284
Chapter 2 Specification
1. TFT-LCD CHARACTERISTICS
Model Name: VOJ320F1A
Display Size: 31.55 inches (801.31mm) diagonal
Outline Dimension: 760.0 mm (H) x 450.0 mm (V) x 48.0 mm (D) (Typ.)
Pixel Pitch: 0.36375mm x 0. 36375mm 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) _ LC320WUN-SAA1
Surface Luminance, White: 500 cd/m2 (Typ)
Luminance Variation, δ=1.3 (Max)
Response Time = 6ms (Max=9ms)
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)
3x 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)

CONFIDENTIAL – DO NOT COPY Page 2-2
File No. SG-0284
4. POWER SUPPLY
Input Voltage Level: 100~120 Vac, 50/ 60 Hz
Power Consumption: 170W Max. Power Off / Standby: to less than 1W
5. Speaker
Output 12W (max) X2
6. ENVIRONMENT
Operating Temperature: 0c~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：
801.8mm(W) x 568.4mm(H) x 217.9mm(D) inches
Dimension without stand：
801.8mm(W) x 536.8mm(H) x 105.0mm(D) inches
8. WEIGHT (Physical weight)
a. Net 12.5 +/- 0.5 kgs
b. Gross 16.6 +/- 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.)

CONFIDENTIAL – DO NOT COPY Page 2-3
File No. SG-0284
(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.
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-0284
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-0284
A. Picture: (Bold: Default)
a. Picture Mode (Custom/Standard/Movie/Game/Vivid/Football/Golf/Basketball/
Baseball)
b. Backlight (0~100, 90)
c. Brightness (0~100, 50)
d. Contrast (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
B. Audio: (Bold: Default)
a. Audio Mode (Flat/Rock/Pop/Classic/Jazz)
b. Equalizer
c. Balance (-50~50, 0)

CONFIDENTIAL – DO NOT COPY Page 3-3
File No. SG-0284
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
C. TV: (Bold: Default)
a. Tuner Mode (Cable/Antenna)
b. Auto Search
c. Partial Channel Search
d. Skip Channel
e. MTS (ATV:Mono/Stereo/Sap；DTV:Language1/Language2/Language3)
f. Time (Eastern/Atlantic/Indiana/Cential/Mountain/Arizona/Newfoundland/
Pacific/Alaska/Hawaii)
g. Daylight Saving (On/Off)