Vizio VP42HDTV20A Service Manual
Service Manual
Model #: VIZIO VP42 HDTV20A
V, Inc
320A Kalmus Drive Costa Mesa, CA 92626
TEL : +714-668-0588 FAX :+714-668-9099
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 VP42 HTDV20A Service Manual
VINC Service Manual
VIZIO VP42 HDTV20A
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 VP42 HTDV20A 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. Smoothing function enables display of smooth texts and graphics even if
image withresolution lower than 1024x768 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, backlight), sound setting, PIP, TV channel program,
aspect and gamma or reset all setting.
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Chapter 2 Specification
1. LCD CHARACTERISTICS
Type: PDP MODULE 42'' PDP42X3 (LG)(China)(Film type)
Size: 42.02inch
Display Size: 42 inches (1067.308mm) diagonal
Outline Dimension: 1005 mm (H) x 597 mm (V) x 60.7 mm (D) (Typ.)
Pixel Pitch: 0.9mm x 0.676mm x RGB
Pixel Format: 1024 horiz. By 768 vert. Pixels RGB strip arrangement
Contrast ratio:
Luminance, White: 480 cd/m
10000:1(Typ) (panel spec)
2 (Typ) (1/100 White Window)
Display Operating Mode: normally Black
Surface Treatment: Hard Coating (3H) ,Anti-glare treatment of the front
polarizer.
2. OPTICAL CHARACTERISTICS
Viewing Angle
Left: free
Right: free
Top: free
Bottom: free
3. SIGNAL (Refer to the Timing Chart)
Sync Signal
1) Type: TMDS
2) Input Voltage Level: 100~240 Vac, 50/ 60 Hz
4.Input Connectors
RJ11, D-SUB15PIN (MINI, 3rows), Headphone, HDMIX2, RCAX3 (component),
RCAX2 (AUDIO in), RCAX3 (composite), RCAX2 (AUDIO in), S-Video, Tuner
5. POWER SUPPLY
Power Consumption: 380W MAX
Power OFF: to less than 3W MAX
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6.Speaker
Output 10W (max) X2
7. ENVIRONMENT
5-1. Operating Temperature: 5c~35c (Ambient)
5-2. Operating Humidity: 90%RH (Non-condensing)
5-3. Operating Altitude: 0 - 14,000 feet (4267.2m)(Non-Operating)
8. DIMENSIONS (Physical dimension)
Width: 1048.0 mm.
Depth: 308.0mm
Height: 757.0mm
9. WEIGHT (Physical weight)
a. Net: 33.26+/-0.5kgs
b. Gross: 40.5+/-0.5kgs
Precaution
Please pay attention to the followings when you use this TFT LCD 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.
(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.
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(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) 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.
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(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.
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
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. Brightness (0~100, 55)
c. Contrast (0~100, 50)
d. Color (saturation)(0~100, 50)
e. Tint (hue) (-32~32, 0)
f. Sharpness (0~7, 4)
g. Color Temperature (Cool/Normal/Warm/Custom)
h. Advanced Video
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. 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)
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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)
g. Image Cleaner (ON/OFF)
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. Brightness (0~100, 55)
c. Contrast (0~100, 50)
d. Color Temperature (6500/9300/Custom)
e. H-Size (0~255, 127)
f. H-Position (0~100, 65)
g. V-Position (0~100, 49)
h. 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. Image Cleaner(ON/OFF)
g. Rest All Setting (OK/Cancel)
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AV / COMPONENT MODE
A. Picture：(Bold: Default)
a. Picture Mode (Standard/Movie /Game / Custom)
b. Brightness (0~100, 55)
c. Contrast (0~100, 50)
d. Color (saturation)(0~100, 50)
e. Tint (hue) (-32~32, 0)
f. Sharpness (0~7, 4)
g. Color Temperature (Cool/Normal/Warm/Custom)
h. Advanced Video
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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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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. Image Cleaner (ON/OFF)
g. Rest All Setting (OK/Cancel)
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D. 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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HDMI MODE
A. Picture：(Bold: Default)
a. Picture Mode (Standard/Movie /Game / Custom)
b. Brightness (0~100, 55)
c. Contrast (0~100, 50)
d. Color (saturation)(0~100, 50)
e. Tint (hue) (-32~32, 0)
f. Sharpness (0~7, 4)
g. Color Temperature (Cool/Normal/Warm/Custom)
h. Advanced Video
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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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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
f. Image Cleaner (ON/OFF)
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: 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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Chapter4 Factory preset timings
This timing chart is already preset for the PDP analog & digital display
monitors.
Resolution
Refresh
rate
640x480 60Hz 31.5kHz 59.94Hz N N 25.175
640x480 75Hz 37.5kHz 75.00Hz N N 31.500
800X600 60Hz 37.9kHz 60.317Hz P P 40.000
800x600 75Hz 46.9kHz 75.00Hz P P 49.500
800X600 85Hz 53.7kHz 85.06Hz P P 56.250
1024x768 60Hz 48.4kHz 60.01Hz N N 65.000
1024X768 75Hz 60.0kHz 75.03Hz P P 78.750
720x400 70Hz 31.46kHz 70.08Hz N P 28.320
1366X768 60Hz 47.7KHZ 60.00HZ P N 85.500
Remark: P: positive N: negative
Horizontal
Frequency
Vertical
Frequency
Horizontal
Polarity
Vertical
Polarity
Pixel
Rate
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Chapter5 Pin Assignment
The TFT LCD analog display monitors use a 15 Pin Mini D-Sub connector as
video input source.
Pin Description
1 Red
2 Green
3 Blue
4 Ground
5 Ground
6 R-Ground
7 G-Ground
8 B-Ground
9 +5V for DDC
10 Ground
11 No Connection
12 (SDA)
13 H-Sync (Composite Sync)
14 V-Sync
15 (SCL)
1
11
5
106
15
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HDMI CONNECT PIN ASSIGNMENT
PIN SIGNAL ASSIGNMENT
1 TMDS Data2+
2 TMDS Data2 Shield
3 TMDS Data2-
4 TMDS Data1+
5 TMDS Data1 Shield
6 TMDS Data1-
7 TMDS Data0+
8 TMDS Data0 Shield
9 TMDS Data0-
10 TMDS Clock+
11 TMDS Clock Shield
12 TMDS Clock-
13 CEC
14 Reserved (N.C on device)
15 SCL
16 SDA
17 DDC/CEC Ground
18 +5V Power
19 Hot Plug Detect
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Four-Pin mini DIN S-Video Connector
a. Pin Assignment
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)
Signal Level Video (Y) : Analog 0.1Vp-p/75
Video (C) : Analog 0.286p-p/75
Sync (H+V): 0.3V below Video (Y)
Frequency H: 15.734Khz V: 60HZ (NTSC)
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F-Type TV RF connector
a. Signal Level 60dBµV typical
b. System NTSC
c. Frequency 55~801MHz (NTSC)
PC connector 15 pin male D-sub connector
a. Pin Assignment Refer to Section 2.3.10
b. Signal Level Video (R, G, B): Analog 0.7Vp-p/75
Sync (H, V): TTL level
RGB Signal:
a. Sync Type TTL (Separate / Composite) or Sync. On Green
b. Sync polarity Positive or Negative
c. Video Amplitude RGB: 0.7Vp-p
d. Frequency H: support to 30K~70KHz
V: support to 50~85Hz
Pixel Clock: support to 110MHz
HDMI Signal (HDMI):
a. Pin Assignment Refer to HDNI Pin Assignment
b. 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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Component signal (Component 1 and Component 2)
Component 1
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
Component 2
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
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