AOC ENVISION L32W661 User manual

32‟‟ LCD TV AOC L32W661
1
Service
Service
Service
Horizontal Frequency
31- 60 kHz
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
R FOR TH
UNIT WHEN S
7.1.Main Board…………..………….……….......26
7.2.Power Board……………..………….……….......28
7.3.Audio Board……………..………….……….......30
7.4.Connector Board……………………..……….......30
7.5.Key Board……………………………….……….......30
7.6 Side Board…………………………….……….......31
8. White-Balance, Luminance Adjustment...................32
9 Block Diagram.……...........................................34
10. Schematic……………...…….……..………………..35
10.1 Main Board…….………..….…………….….......35
10.2. Power Board…………….……….………….......51
10.3. Audio Board…………….……….………….......52
11. Exploded View..……………...........................…..53
12. BOM List……………….…………………………….55
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…...…………………….……….......6
2.3. How To Connect…….…………………….……….....11
2.4. Front Panel Control Knobs……………….……….....15
3. Precautions and Notices ……..……………..............16
4. Input/Output Specification…………....................…....16
5. Mechanical Instructions…………………….................18
6. Repair Flow Chart ……………………….…….…….....22
7. PCB Layout ………………..………………....….......26

32‟‟ LCD TV AOC L32W661
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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.)

32‟‟ LCD TV AOC L32W661
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Revision List
Version
Release Date
Revision Instructions
TPV Model
A00
May-31-2007
Initial Release
E327AZNK2WE1NN

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1. General Specification

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2. Operating Instructions
2.1. The Use of Remote Control
“POWER”
Press to power ON/OFF
(standby) TV.
(Note:1.TV is never completely
power off unless physically
unplugged.
2.Press to turn on TV after the
power on status LED had
changed to the amber color and
stopped flashing.)
“VIDEO”
Press repeatedly to choose
S-Video/
Composite source mode (Video 1
~ 4).
“COMP”
Press repeatedly to choose
Component source mode (Video
5 ~ 6).
“PC”
Press repeatedly to choose VGA
or HDMI source mode (Video 7 ~
9).
“TV”
Press to choose ATSC/NTSC TV
source mode.
“0 ~ 9 /- number”
Press to enter TV channel
number to select channel (Press
„-‟ to indicate choosing the
sub-channel).
“SLEEP”
Press to set a time period
(off/30min/60min/90min) after
which the TV should switch itself
to standby mode.
“FREEZE”
Press to freeze the displayed
picture “VOL- / VOL+” Press + or
- to adjust the volume.
“MENU”
Press to open or exit menu.
“”,“ ”,”＜”,“＞”,“OK”
Press to adjust the various
function items on the menu.
“V-CHIP”
Press to lock / unlock Parental
Control temporarily. (After setting
the restricted table of MPAA or
TV Rating.)
“DISPLAY”
Press to show the information
about the input source、TV
channel、display resolution and
current time.
“MUTE”
Press to set TV sound mute
ON/OFF
“PREV CH”
Press to display the previous TV
“MTS/SAP”
Press to activate the NTSC TV
sounds, such as: Stereo, SAP or
Mono tone.
“WIDE”
Press to choose the display
aspect as: Normal, Wide, Zoom
or Cinema mode.
“SOURCE”
Press repeatedly to choose the
various input sources (Video 1 ~
9).
“CH- / CH +”
Press + or - to browse through
the TV channels.
“Exit”
Press to exit menu or OSD.
“VIDEO ADJ”
Press to choose the Brightness
or
Contrast adjustment.
“AUDIO ADJ”
Press to switch the ATSC
multi-channel TV sounds.
“CC”
Press repeatedly to change the
closed caption type as
CC1/CC2/CC3/CC4/TEXT1/
TEXT2/TEXT3/TEXT4/Off.
“EPG”
Press to show the information
the same as “DISPLAY” key.
“FAV”
Press to display the favorite TV
channel.
(After setting the favorite TV
channel on main menu)
.

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2.2 To Use the Menus
1. Press the MENU button to display the main menu
2. Use the cursor up/down to select a menu item.
3. Use the cursor left/right to enter a submenu.
4. Press the OK button to enable/disable the function.
5. Press the MENU or EXIT button to exit the menu.
Press the MENU button to enter the main OSD (On Screen Display). Adjust the items including Setup menu, Video
menu, Audio menu and Feature menu. However, some function items in the menus may only be enabled in the
particular source modes.
ETUP MENU

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32‟‟ LCD TV AOC L32W661
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32‟‟ LCD TV AOC L32W661
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32‟‟ LCD TV AOC L32W661
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32‟‟ LCD TV AOC L32W661
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2.3 How to Connect

32‟‟ LCD TV AOC L32W661
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2.4 Front Panel Control Knobs

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4. Input/Output Specification
4.1 RGB Signal input
15 - Pin Color Display Signal Cable
Pin No.
Description
Pin No.
Description
1
Red Video
9
No Pin!
2
Green Video
10
Sync Ground
3
Blue Video
11
SDA(Remote Control)
4
SCL(Remote Control)
12
Serial Data for DDC
5
Ground
13
H-Sync.
6
Red Video Ground
14
V-Sync.
7
Green Video Ground
15
Serial Clock for DDC
8
Blue Video Ground
4.2 AV/S-Video/Component signal input
Video / S-Video / Component Video Input
All tests must be performed under “video standard testing conditions” unless otherwise specified
AV (Composite Video input)
Video1 / Video2
System
NTSC
Amplitude
1.0 V(p-p), negative sync.
Impedance
75 ohm terminated
S-Video (Y / C input)
S-Video1 / 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)
Component1/Component2
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
1
6
11
15
5
10

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4.2 Compatible Mode Table
ANALOG RGB INPUT SIGNAL TIMING
VESA MODES
Horizontal
Vertical
Mode
Resolution
Total
Nominal
Frequency
(KHz)
Sync
Polarity
Nominal
Freq.
(Hz)
Sync
Polarity
Nominal
Pixel
Clock
(MHz)
VGA
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
640x480@75Hz
840 x 500
37.5
N
75
N
31.500
SVGA
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
800x600@75Hz
1056 x 625
46.0875
P
75
P
49.5
XGA
1024x768@60Hz
1344x806
48.363
N
60.004
N
65.000
1024x768@70Hz
1328x806
56.476
N
70.069
N
75.000
1024x768@75Hz
1312x800
60.023
P
75.029
P
78.750
WXGA
1360x768@60Hz
1792x795
47.712
P
60.015
P
85.5
HDMI INPUT SIGNAL TIMING:
VESA MODES
Horizontal
Vertical
Mode
Resolution
Total
Nominal
Frequency
(KHz)
Sync
Polarity
Nominal
Freq.
(Hz)
Sync
Polarity
Nominal
Pixel
Clock
(MHz)
720P
1280×720P
45.00
60
74.25
1080i
1920X1080i
33.75
60
74.25
480P
720X480P
31.54
60
27.00

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5. Mechanical Instructions
Step
Figure
Description
Preparation
and remove
the base
Lay the
LCD-TV on a
flat, soft and
clean
surface.
Remove the
screws
remarked in
red
Remove rear
cover
Remove the
screws
remarked in
red

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Remove main
frame
Remove the
screws
remarked in
red
Remove the
shield
Remove the
screws
remarked in
red

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remove the
boards
Remove the
screws
remarked in
red
Remove main
frame
Remove the
screws
remarked in
red

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Remove the
bezel
Remove the
screws
remarked in
red