Vizio VW22LHDTV10T User manual

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Service
Service
Service
Horizontal Frequency
31~60kHz
TABLE OF CONTENTS
Description Page Description Page
SAFETY NOTICE
ANY PERSON ATTEMPTING TO SERVICE THIS CHASSIS MUST FAMILIARIZE HIMSELF WITH THE CHASSIS
AND BE AWARE OF THE NECESSARY SAFETY PRECAUTIONS TO BE USED WHEN SERVICING
ELECTRONIC EQUIPMENT CONTAINING HIGH VOLTAGES.
CAUTION: USE A SEPARATE ISOLATION TRANSFOMER FOR THIS UNIT WHEN SERVICING
6.1.Main Board…………..……………...……….......25
6.2.Power Board……………..………….……….......28
6.3.Key Board………………………..……….......29
6.4.IR Board…………………………..……….......29
7. White-Balance, Luminance Adjustment...................30
8. Block Diagram.……...........................................32
9. Schematic……………...…………..………………...33
9.1 Main Board…………………………………...….......33
9.2.Power Board…………….…………...………….......46
9.3.Key Board……………….……….………….......48
10. Exploded View………………………………….…...49
11. BOM List……………….…………………………….50
Table Of Contents.......……..............................…........1
Important Safety Notice.......................................……......2
Revision List…………………………………………………3
1. General Specification..............................………........4
2. Operating Instructions…………………….……….......5
2.1. The Use Of Remote Control…….………….…….......5
2.2. To Use The Menu…...…………………….……….......7
2.3. How To Connect…….…………………….……….....13
2.4. Front Panel Control Knobs……………….……….....14
3. Input/Output Specification…………....................…....15
4. Mechanical Instructions…………………….................17
5. Repair Flow Chart ……………………….…….…….....20
6. PCB Layout ………………..………………....….......25

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Important Safety Notice
Proper service and repair is important to the safe, reliable operation of all AOC Company Equipment. The service
procedures recommended by AOC and described in this service manual are effective methods of performing service
operations. Some of these service operations require the use of tools specially designed for the purpose. The
special tools should be used when and as recommended.
It is important to note that this manual contains various CAUTIONS and NOTICES which should be carefully read in
order to minimize the risk of personal injury to service personnel. The possibility exists that improper service
methods may damage the equipment. It is also important to understand that these CAUTIONS and NOTICES ARE
NOT EXHAUSTIVE. AOC could not possibly know, evaluate and advise the service trade of all conceivable ways in
which service might be done or of the possible hazardous consequences of each way. Consequently, AOC has not
undertaken any such broad evaluation. Accordingly, a servicer who uses a service procedure or tool which is not
recommended by AOC must first satisfy himself thoroughly that neither his safety nor the safe operation of the
equipment will be jeopardized by the service method selected.
Hereafter throughout this manual, AOC Company will be referred to as AOC.
WARNING
Use of substitute replacement parts, which do not have the same, specified safety characteristics might create
shock, fire, or other hazards.
Under no circumstances should the original design be modified or altered without written permission from AOC.
AOC assumes no liability, express or implied, arising out of any unauthorized modification of design.
Servicer assumes all liability.
FOR PRODUCTS CONTAINING LASER:
DANGER-Invisible laser radiations when open AVOID DIRECT EXPOSURE TO BEAM.
CAUTION-Use of controls or adjustments or performance of procedures other than those specified herein may
result in hazardous radiation exposure.
CAUTION -The use of optical instruments with this product will increase eye hazard.
TO ENSURE THE CONTINUED RELIABILITY OF THIS PRODUCT, USE ONLY ORIGINAL MANUFACTURER'S
REPLACEMENT PARTS, WHICH ARE LISTED WITH THEIR PART NUMBERS IN THE PARTS LIST SECTION OF
THIS SERVICE MANUAL.
Take care during handling the LCD module with backlight unit
-Must mount the module using mounting holes arranged in four corners.
-Do not press on the panel, edge of the frame strongly or electric shock as this will result in damage to the screen.
-Do not scratch or press on the panel with any sharp objects, such as pencil or pen as this may result in damage to
the panel.
-Protect the module from the ESD as it may damage the electronic circuit (C-MOS).
-Make certain that treatment person’s body is grounded through wristband.
-Do not leave the module in high temperature and in areas of high humidity for a long time.
-Avoid contact with water as it may a short circuit within the module.
-If the surface of panel becomes dirty, please wipe it off with a soft material. (Cleaning with a dirty or rough cloth may
damage the panel.)

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Revision List
Version Release Date Revision Instructions TPV Model
A00 Apr.-07-2008 Initial Release E2282ZNKW7VZNN

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1. General Specification

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2. Operating Instructions
2.1 The Use of Remote Control

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MAIN MEN
U
USING YOUR TV
2.2 To Use the Menus
1. Press the MENU button on the remote control or the side of the TV and the OSD menu will be shown on the
screen.
2. Press the UP and Down arrow buttons on the remote control buttons or the CH + or CH – buttons on the side of
the HDTV to select one of the other menu options.
3. Once the menu option is displayed, press the Left arrow button on the remote control or the VOL + or VOL –
button on the side of the TV to select one of the items to adjust.
4. Press the MENU button to return to previous screen when finished.
5. Repeat steps 2 through 5 to adjust additional options within this menu.
6. Once the adjustments are completed press the EXIT button to exit the OSD completely.
The OSD consists of several menu options: SETUP, VIDEO, AUDIO and FEATURE.
Note: Some of the submenu options may vary depending on your selected input source.
Picture adjustment
Press the MENU button to activate the On Screen Display (OSD), select the VIDEO option to adjust the contrast,
brightness, sharpness, color, tint and the backlight.
Contrast
Press the Right and Left arrow buttons to start adjusting the contrast and the menu page will disappear and be

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replaced by a small Contrast Indicator Bar so you can see the contrast level between the minimum and maximum
available levels.
The Contrast adjusts the white levels in the picture. If the contrast is too low the picture will look washed out and if
the contrast is too high you will not be able to see any detail in the bright parts of a picture.
Brightness
Select the Brightness option in the Video submenu.
Press the Right and Left arrow buttons to start adjusting the Brightness and the menu page will disappear and be
replaced by a small Brightness Indicator Bar so you can see the brightness level between the minimum and
maximum available levels.
The Brightness adjusts the black levels in the picture. If the brightness is too low you will not be able to see the detail
in darker parts of the picture and if the brightness is too high the picture will look washed out.
Sharpness
Select the Sharpness option in the Video submenu. Press the Right and Left arrow buttons to start adjusting the
Sharpness and the menu page will disappear and be replaced by a small Sharpness Indicator Bar so you can see
the sharpness level between the minimum and maximum available levels.
Color
Select the Color option in the Video submenu. Press the Right and Left arrow buttons to start adjusting the Color
and the menu page will disappear and be replaced by a small Color Indicator Bar so you can see the color level
between the minimum and maximum available levels.
Tint
Select the Tint option in the Video submenu. Press the Right and Left arrow buttons to start adjusting the Tint and
the menu page will disappear and be replaced by a small Tint Indicator Bar so you can see the color level between
the minimum and maximum available levels.
The Tint adjusts the hue of the picture. The easiest way to set tint is to look at flesh tones and adjust for a realistic
appearance. In most cases, the default middle position is correct. If people’s faces look too orange try reducing the
level of color first as the case of this is often too much color.
Backlight
Select the Backlight option in the Video submenu. Press the Right and Left arrow buttons to start adjusting the
Backlight and the menu page will disappear and be replaced by a small Backlight Indicator Bar so you can see the
backlight level between the minimum and maximum levels (1 ~ 10).
The Backlight level does not affect the Brightness (black level) or Contrast (white level) of the picture, it adjusts the
lamp current and this affects the overall brilliance of the picture.
Setting
Select the Settings option in the Video submenu. Press the Right arrow button on the remote control to restore all
video settings to factory default.

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Audio adjustment
Press the MENU button to activate the On Screen Display (OSD). Select the AUDIO option to adjust the Audio
Language, Bass, and Treble, Balance, Digital Audio Output and TV Speaker settings.
Press the MENU button to activate the On Screen Display (OSD). Select the AUDIO option to adjust the Audio
Language, Bass, and Treble, Balance, Digital Audio Output and TV Speaker settings.
Audio language
Select the audio language option in the audio submenu.
Press the right arrow button to select an alternate language if more than one language is available for the program
(default, English, espanol, francais)
Note: this option is only available when ATSC TV selected as the input source.
Bass
Select the Bass option in the Audio submenu. Press the Right and Left arrow buttons to start adjusting the Bass and
the menu page will disappear and be replaced by a small Bass Indicator Bar so you can see the bass level between
the zero and maximum available levels.
Treble
Select the Treble option in the Audio submenu. Press the Right and Left arrow buttons to start adjusting the Treble
and the menu page will disappear and be replaced by a small Treble Indicator Bar so you can see the treble level
between the zero and maximum available levels.
Balance
Select the Balance option in the Audio submenu. Press the right and left arrow buttons to start adjusting the balance
and the menu page will disappear and be replaced by a small Balance Indicator Bar so you can see the balance
adjustment to the left or right of the nominal position.
Digital audio output
Select the Digital Audio Output option in the Audio submenu. Press the right arrow button to select RAW, PCM or
OFF.

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TV speaker
Select the TV Speaker option in the Audio submenu. Press the right arrow button to select ON or OFF. You may
want to turn-off the internal speakers when listening to the audio through your Home Theatre System.
Feature
Press the MENU button to activate the On Screen Display (OSD). Select the FEATURE option to adjust the Time,
Sleep Timer, Advanced Video Menu, Password, Parental Control, Analog Captions, Digital Captions, Digital Closed
Caption, Input Label, Component Set, and VGA Set settings.
Time set
Select the Time Set option in the Feature submenu to set the current time. Press the right arrow button to select
from Alaska, Hawaii, Pacific, Central, Mountain or Eastern time zones.
Sleep timer
Select the Sleep Timer option in the Feature submenu to set the HDTV to turn off automatically. Press the right
arrow button to select from OFF, 5, 10, 15, 30, 45, 60, 90, 120, 180, or 240 minutes.
Advanced video menu
Select the Advanced Video Menu option in the Feature submenu to set the Noise Reduction, Color Temperature, 3D
Y/C and Dynamic Contrast.
The Noise Reduction may be set to OFF, Low, Mid or High. Use this feature to diminish picture artifacts caused by
the digitizing of image motion content that may be present in the picture.
The Color Temperature may be set to Cool, Normal or Warm.
The 3D Y/C may be set to ON or OFF.
The Dynamic Contrast may be set to ON or OFF. Large areas of darkness in a picture will result in a lower Average
Picture Level (APL) causing the overall picture to look too dark. Activate this feature to raise the APL.
Password set
Select the Password Set option in the Feature submenu to set the password for parental control options. Press the
right arrow button and the Password panel will be displayed. Enter the four digit password using the number buttons

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on the remote control. Enter it a second time to confirm you entered it correctly. Note: If you forget your password,
entering 3448 will allow you to set a new password. This feature is not available when HDMI, Component, or VGA is
selected as the input source.
Parental control
Select the Parental Control option in the Feature submenu to set the parental control levels for USA and Canada
ratings.
Press the right arrow button and the Password panel will be displayed. Enter your password and the Parental
Control menu will open.
Select USA Parental Locks or Canadian Parental Locks by highlighting the selection and pressing the right arrow
button to open the selection.
Use the arrow buttons on the remote control to highlight the rating to be locked and press the OK button.
All ratings higher than your selection will also be locked. For example, if the “PG-13” rating is selected as your
choice, the “R”, “NC-17”, and “X” ratings will also be locked.
TV Ratings may also be used to customize the program blocking of the following TV ratings:
Y – All children
Y7 – Older children
G – General audience
PG – Guidance suggested
14 – Strongly cautioned
MA – Mature audience
You can also customize the TV ratings for the following content:
FV – Fantasy Violence
L – Adult language
S – Sexual situations
V - Violence
D – Sexually suggestive dialog

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Digital caption
When watching DTV, the Digital Captions feature is available in the Feature menu. Press the right arrow button to
select from Service 1-6, Text 1-4, and CC 1-4.
Note: This feature is not available when HDMI, Component, or VGA is selected as the input source.
Digital closed caption
Select the Digital Closed Caption option in the Feature submenu. Press the right arrow button to open the Digital
Closed Caption Menu. You can adjust the Size, Font, Text Color, Text Opacity, Background Opacity, Edge Effect
and Edge Color. Note: This feature is not available when HDMI, Component, or VGA is selected as the input source.
Analog caption
The Analog Caption feature is available in the Feature menu when a Composite input source is selected. Press the
right arrow button to select from Text 1-4, and CC 1-4. Note: This feature is only available when Composite or
S-Video is selected as the input source.
Input label
The Input Label feature is available in the Feature menu. Press the right arrow button to open the Input Label panel.
This feature has been added to allow you to modify the input label. You can use up to ten characters to label the
input.
Note: This feature is not available when DTV/TV is selected as the input source.
Component Set
The Component Set option is available in the Feature menu. This option lets you adjust the Horizontal Position,
Vertical Position, and Phase. Select the Settings option to restore to factory default settings. Note: This feature is
only available when Component is selected as the input source.
VGA Set
The VGA Set option is available in the Feature menu. This option lets you adjust the Horizontal Position, Vertical
Position, Clock and Phase. You can also select Auto Adjust to automatically set the settings. Select the Settings
option to restore to factory default settings. Note: This feature is only available when VGA is selected as the input
source.

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2.3 How to Connect
HDMI – Connect the primary source for digital video such as a DVD multimedia player or set top box through this all
digital connector. The white color band on the rear of the TV indicates this connection. Your VIZIO Certified HDMI
cables are available for purchase from www.VIZIO.com or by calling 888-VIZIOCE (888-849-4623).
RGB PC – Connect the video and audio cables from a computer here.
AV/S-VIDEO IN – Connect the primary source for composite video devices, such as a VCR or video game. Use the
white and red connectors to connect the external audio from the same source. The signal being carried by the
S-Video cable and connector, if connected, will take priority over the Video RCA connector (yellow connector).
COMPONENT (YPb/CbPr/Cr with Audio L/R) – Connect the primary source for component video devices such as
a DVD Player or set top box here. From left to right, use red for Pr, blue for Pb, green for Y, red for right audio (R)
and white for left audio (L) inputs.
DTV – Connect to an antenna or digital cable (out-of-the-wall, not from Cable Box) for Digital TV.*
SPDIF (Optical Digital Audio Out) - When a digital audio signal is associated with the input selected for viewing,
the digital audio will be available on this SPDIF connection to your home theater system.

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2.4 Front Panel Control Knobs
Remote control sensor- this is the window through which all of the remote control signals
pass to the sensor. Point the remote control directly at this window for the best response to
the remote signal.
Power light- the power light will illuminate with a red light when the HDTV is powered
off, a blue light indicates the HDTV is powered ON.

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3. Input/Output Specification
3.1 RGB Signal input
15 - Pin Color Display Signal Cable
Pin No. Description Pin No. Description
1 Red Video 9 Mandatory +5V Supply for PC Bypass
2 Green Video 10 Sync Ground
3 Blue Video 11 SDA(Remote Control)
4 SCL(Remote Control) 12 Bi-directional Data (SDA) for PC Bypass
5 Ground 13 H-Sync.
6 Red Video Ground 14 V-Sync.
7 Green Video Ground 15 Data Clock (SCL) for PC Bypass
8 Blue Video Ground
3.2 HDMI Digital connector pin assignments
Pin No. Description Pin No. Description
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 NC
15 SCL 16 SDA
17 DDC/CEC Ground 18 +5V Power
19 Hot Plug Detect
1
6
11 15
5
10

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3.3 AV/S-Video/Component Video Inputs
3.4 Compatible Mode Table
VESA MODES
Horizontal Vertical
Mode Resolution Total
Nominal
Frequency
(KHz)
Sync
Polarity
Nominal
Freq.
(Hz)
Sync
Polarit
y
Nominal
Pixel
Clock
(MHz)
640x480@60Hz 800 x 525 31.469 N 59.940 N 25.175
640x480@72Hz 832 x 520 37.861 N 72.809 N 31.500
VGA
640x480@75Hz 840 x 500 37.5 N 75 N 31.500
800x600@56Hz 1024 x 625 35.156 P 56.25 P 36.000
800x600@60Hz 1056 x 628 37.879 P 60.317 P 40.000
800x600@72Hz 1040 x 666 48.097 P 72.188 P 40.000
SVGA
800x600@75Hz 1056 x 625 460875 P 75 P 49.5
1024x768@60Hz 1344x806 48.363 N 60.004 N 65.000
1024x768@70Hz 1328x806 56.476 N 70.069 N 75.000
XGA
1024x768@75Hz 1312x800 60.023 P 75.029 P 78.750
WXGA 1680x1050@60Hz 64.674 P 59.883 P 119
AV (Composite Video input)
Video1
System NTSC
Amplitude 1.0 V (p-p), negative sync.
Impedance 75 ohm terminated
S-Video (Y / C input)
S-Video2
System NTSC
Y signal amplitude 1.0Vpp (including sync)
C signal amplitude 0.286Vpp
Impedance 75 ohm terminated
Component (Y, Pb/Cb, Pr/Cr input)
Video3
System 1080i, 480p, 720p, 480i
Y signal amplitude 1.0Vpp (including sync)
Cr, (R-Y) / Cb, (B-Y)
Signal amplitude ±0.35Vpp, 75 ohm
Impedance 75 ohm terminated

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4. Mechanical Instructions
1. Remove the 3 screws to remove the stand base.
2. Remove 7 screws to remove the rear cover.
3.Remove4screws&connectortoremovethespeaker.

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4. Remove 3 screws to remove key board and stand.
5. Remove the screws & connectors to remove the main board, power board.
6. Remove the bezel.
7. Remove IR board.

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8. Remove the 4 screws to remove the main frame.
9. The panel.

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5. Repair Flow Chart
1. No Power (No LED indicator)
2. Can not start (LED indicator yellow)
NG
Check power cord and board interface Plug in power cord and interface
OK
Check F901, BD901, C905 NG Replace F901 or BD901 or C905
OK
Check IC901, Q901
Check D904, D906
NG Replace IC901 or Q901
OK
Check T901
OK
Replace T901
Replace D904 or D906
OK
NG
NG
Check ZD920 NG Replace ZD920
NG Re
p
air the ke
y
board
OK
Check 5V SB NG Return to “1”
OK
Check PWR ON si
g
nal NG Check U409
,
Q706
,
0704 NG Replace U409 or Q706 or
Q704
Check I
2
C communication
OK
Check U401
,
U402 NG Re
p
lace the main board
OK
OK
Check main board
p
ower su
pp
l
y
p
art
Check ke
y
board
Check I
2
C communication
OK
Check 3.3V SB NG Check U706