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Service Manual
Model #: VIZIO VW32L
HDTV40A_SST(RF)_LGD
V, Inc
320A Kalmus Drive Costa Mesa, CA 92626
TEL : +714-668-0588 FAX :+714-668-9099
Top Confidential
Page 2
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
VIZIO VW32L HDTV40A_SST(RF)_LGD Service Manual
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VINC Service Manual
VIZIO VW32L HDTV40A_SST(RF)_LGD
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 VW32L HDTV40A_SST(RF)_LGD Service Manual
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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 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 1366x768 is magnified.
7. Advanced video functions for personal favor.
8. Power saving to reduce consumption power too less than 1 W.
9. On Screen Display: user can define display mode (i.e. color, brightness, contrast,
sharpness, backlight), sound setting, TV channel program, aspect and gamma
or reset all setting.
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Chapter 2 Specification
1. TFT-LCD CHARACTERISTICS
Model Name: LGD_LC320WXN-SAC2
Display Size: 31.51 inches
Outline Dimension: 760.0 mm(H) x 450.0 mm(V) x 48.0 mm(D) (Typ.)
Pixel Pitch: 0.51075 mm(H) x 0.51075 mm(V)
Pixel Format: 1366 horiz. By 768 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: 1100:1(Typ)
Surface Luminance, White: 500 cd/m
2 (Typ)
Luminance Variation, δ=1.3 (Max)
Response Time = 8 ms (Typ) , (Max=12ms)
Viewing Angle (CR>10)
Left: 89°typ.
Right: 89°typ.
Top: 89°typ.
Bottom: 89°typ.
3. Input Connectors
1 x RF (F connector for internal NTSC/ATSC/ QAM Hybrid Tuner x 1)
2 x HDMI(v1.3) with HDCP plus Stereo Audio
2 x Component Y/Pb/Pr plus Stereo Audio
1 x Composite Video/ 1x S-Video plus Stereo Audio
1 x Analog RGB plus Stereo Audio
4. POWER SUPPLY
Input Voltage Level: 120 Vac, 50/ 60 Hz
Power Consumption: 150W MAXPower OFF: to less than 1W MAX
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5. Speaker
Output 10W (max) X2
6. ENVIRONMENT
Operating Temperature: 0c~50c (Ambient)
Operating Humidity: Ta= 39 °C, 90%RH (Non-condensing)
Operating Altitude: 0 - 14,000 feet (4267.2m)(Non-Operating)
7. DIMENSIONS (Physical dimension)
Width: 895mm. +/- 3 mm
Depth: 225mm +/- 3 mm
Height: 710mm +/- 3 mm
8. WEIGHT (Physical weight)
a. Net: 13.9 kg
b. Gross: 17.1 kg
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.
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(6) Module has high frequency circuits. Sufficient suppression to the
electromagnetic interference shall be done by system manufacturers.
Grounding and shielding methods may be important to minimized the
interference.
(7) Please do not give any mechanical and/or acoustical impact to LCM.
Otherwise, LCM can’t be operated its full characteristics perfectly.
(8) A screw which is fastened up the steels should be a machine screw.
(if not, it causes metallic foreign material and deal LCM a fatal blow)
(9) Please do not set LCD on its edge.
(10) It is recommended to avoid the signal cable and conductive material over
the inverter transformer for it can cause the abnormal display and
temperature rising.
(11) Partial darkness may happen during 3~5 minutes when LCM is operated
initially in condition that uminance is under 40% at low temperature (under
5℃). This phenomenon which disappears naturally after 3~5 minutes is
not a problem about reliability but LCD characteristic.
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 ormal-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.
[Initial Setup]
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TV Source
A. Picture：(Bold: Default)
a. Picture Mode (Standard / Movie / Game / Custom)
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. Color Temperature (Cool/Normal/Warm/Custom)
i. Advanced Video
1. DNR (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. Digital Audio Out (PCM/OFF/Dolby Digital)
g. Speaker (ON/OFF)
h. Lip Sync (0~5 , 0)
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C. TV：(Bold: Default)
a. Tuner Mode (Cable/Antenna)
b. Auto Search
c. Skip Channel
d. MTS (Stereo/SAP/Mono)
Time Zone( Eastern, Atlantic, Indiana, Central, Mountain, Arizona, Newfoundland, Pacific,
e.
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. Wide (Wide/Panoramic/Normal/Stretch)
d. Input Naming (AV /COMPONENT1/COMPONENT2/RGB/HDMI1/HDMI2)
e. CC (OFF/CC1~4)
f. CC On Mute (OFF/ON)//移除
g. Digital CC Style
h. H/V Position
i. Reset All Setting
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E. Parental：(Bold: Default)
Password (Default => 0000)
a. Cannel Block
b. US TV Rating
c. US Move Rating
d. Canadian English Rating
e. Canadian French Rating
f. Check for New DTV Rating
g. Block TV Unrated (NO/Yes)
h. Access Code Edit
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RGB Mode
A. Picture Adjust：(Bold: Default)
a. Auto Adjust
b. Backlight (0~100, 90)
c. Brightness (0~100, 50)
d. Contrast (0~100, 50)
e. Color Temperature (9300/Custom/6500)
f. H-Size (0~255, 127)
g. H-Position (0~100, 48)
h. V-Position (0~100, 47)
i. Fine Tune (0~31, 29)
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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. Digital Audio Out(PCM/OFF/Dolby Digital)
g. Speakers (ON/OFF)
h. Lip Sync (0~5 , 0)
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C. Setup：(Bold: Default)
a. Language (English/ Français / Espaňol)
b. Sleep Timer (OFF/30Min/60Min/90Min/120Min)
c. Wide (Wide/Normal/Stretch)
d. Input naming (AV/COMPONENT1/COMPONENT2/HDMI1/HDMI2)
e. Rest All Setting (OK/Cancel)
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AV / COMPONENT MODE
A. Picture：(Bold: Default)
a. Picture Mode (Custom/Standard/Movie /Game / Custom)
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. Color Temperature (Cool/Normal/Warm/Custom)
i. Advanced Video
1. DNR (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. Digital Audio Out (PCM/OFF/Dolby Digital)
g. Speakers (ON/OFF)
h. Lip Sync (0~5)
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C. Setup：(Bold: Default)
a. Language (English/ Français / Espaňol)
b. Sleep Timer (OFF/30Min/60Min/90Min/120Min)
c. Wide (Wide/Normal)
d. Input Naming (AV/COMPONENT1/COMPONENT2/HDMI1/HDMI2)
e. CC(OFF/CC1-4)
f. CC On Mute (OFF/ON)移除
g. H/V Position
h. Reset All Setting (OK/Cancel)
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D. Parental：(Bold: Default)
Password (Default => 0000)
a. Cannel Block
b. US TV Rating
c. US Move Rating
d. Canadian English Rating
e. Canadian French Rating
f. Check for New DTV Rating
g. Block TV Unrated (NO/Yes)
h. Access Code Edit
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HDMI MODE
A. Picture：(Bold: Default)
a. Picture Mode (Custom/Movie/Game/Standard Custom)
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. Color Temperature (Cool/Normal/Warm/Custom)
i. Advanced Video
1. DNR (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. Digital Audio Out
g. Speakers (ON/OFF)
h. Lin Sync (0~5 , 0)
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C. Setup：
a. Language (English/ Français / Espaňol)
b. Sleep Timer (OFF/30Min/60Min/90Min/120Min)
c. Wide (Wide/Normal/Stretch)
d. Input Naming (AV/COMPONENT1/COMPONENT2/HDMI1/HDMI2)
e. H/V Position
f. 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. AV: Composite (AV) & S-Video 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.
[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 shooting
(
)
MONITOR DISPLAY NOTHING (PC MODE)
Start
LED is lighted
OrangeÎgreen
N0
1. Is Power board output +5VSB (F1)?
2. Is J1 connector of MB good?
3. Is DC-DC OK?
4. Is U4 pin2 (+3V3SB) working ok?
LED is lighting?
Yes
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
Yes
N0
Panel has no data
out?
Yes
It means data to LVDS
1. Is J5 connecting OK?
2. Check J1 +5VSB (F1)&+12V (F2)
3. Is panel ok?
4. Check P5 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?
Yes
1. Check video
2. Check DVD player
N0
U12 input correct?
Yes
N0
LVDS output
Yes
1. Check J5 Connect is good?
2. Is panel working ok?
END
1. Check P2 signal
2. Check signal between P2 and U12 (IF AV1/AV2 mode)
3. Check Tuner & U12 (IF TV mode)
4. Check P2 (IF S-Video)
5. Check U12 POWER 3.3V
1. Check LVDS LINE
2. Check U12 clock (60MHz)(X1)
3. Check U12 Power
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(COMPONENT1,
2) IS NOT DISPLAY CORRECTLY
Start
N0
Input signal good?
Yes
N0
P10 input correct?
Yes
N0
U12 input correct?
1. Check video
2. Check host’s setting
1. Check signal from P10 & P11
2. Check system power 12V& 5V(5VSB)
1. Check signal between U12 & P10
2. Check Y1 Clock (60MHZ)
Yes
Is LVDS output
correct ?
Yes
1 .Is J5 connected good?
2. Is panel working ok?
END
N0
1. Check U12
2. Check U12 power 3.3V&2.5v&1.8v&1.25v
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(HDMI) IS NOT DISPLAY CORRECTLY
Start
N0
Input signal
U12 no data out ?
1.Is J5 connected good?
2.Is panel working ok?
Yes
N0
Yes
1. Check video
2. Check host’s setting
1. Check P7 & P9 connect
2. Check the pin18 & 19 of P7 & P9
3. Check the pin 16 & 15 of U19 &
U30
Yes
END
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(
)
TROUBLE
OF DC-DC CONVERTER
Start
J1 PIN9,PIN10,PIN11
Yes
J1 PIN 2,3,4
Yes
U51 pin 3
N0
N0
N0
The voltage is about + 5V(+5VSB)
1. Check power board
2. Check power cable, F1 & connection J1
3. Check U4 pin1 (+5VSB) & pin2 (+3V3SB)
The voltage is about + 12V while power switch on
1. Is J1 connection good
2. Check J1 Pin1 is up to about 3.3V (+3V3SB)?
3. Check power board
4. Check F2.
The voltage is about +5V while power switch on
1. Check F1 & U51
2. Check OPWRSB (R11)
3. Check U51 pin1&2 , should have -1V more.
Yes
N0
U7 pin2
Yes
N0
U8 pin2
Yes
N0
U9 pin2
U11 pin1 & pin2
Yes
N0
Yes
The voltage is about +3.3V
1. Check F1 & U51
2. Check U7 pin2
The voltage is about +1.2V while power switch on
1. Check F1 & U51
2. Check U8 pin2
The voltage is about +2.5V while power switch on
1.Check J1 Connect
2.Check U9 pin2
The voltage is about +12V to +5V (for Tuner) while
power switch on
1. Check F2
2. Check U11 pin1 (+12V_AP) & U11 pin2
+5V TUNER
END
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TROUBLE
OF EDID READING
Start
Is Analog DDC OK?
Yes
Is HDMI DDC OK?
N0
N0
Support DDC1/2B
1. Analog cable ok?
2 .Check signal (U26 to P5)
3. Check U26 Voltage
4. Is protocol compliant?
Support DDC1/2B
1. Analog cable ok?
2. Check signal (U19 to P7)
3. Check signal (U30 to P9)
4. Is protocol compliant?
Yes
END
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