AOC LE32A3330/61 User manual

31.5″LCDTV AOC LE32A3330/61
Copyright © 2012 by TPV Corporation. All rights reserved. Specifications are subject to change without notice.
No part of this publication may be reproduced in any form or means, without the prior written permission of TPV Corporation.
Otherwise we will reserve the right to investigate the legal responsibility.
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Service
Service
Service
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 Power Board……...…………..….…….……….......31
6.2 Key Board…...………………………………….......34
6.3 IR Board…...…………………………………….......34
7. Adjustment..............................................................35
8. Schematic Diagram…..…………....………………...36
8.1 Power Board…………..….….……...………….......36
8.2 Key Board……………….……….…………….........38
8.3 IR Board…...…………….……….…………….........39
9. Exploded View………………………………….…...40
10. BOM List……………….……………….………….42
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 Menus….....………………….…..…….......6
2.3 How to Connect……..……………….…….……….....16
2.4 Front Panel Control Knobs…….………….……….....18
3. Input/ Output Specification………....................…....19
4. Mechanical Instructions…………………….................21
5. Repair Flow Chart ……………………….…….…….....24
6. PCB Layout ………………..………………....….......31

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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 Customer Model TPV Model
A00 Nov.9.2012 Initial release LE32A3330/61 E32C11NCCHA1NNX

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1. General Specification
Notes:
• Designs and specifications are subject to change without notice.
• This model may not be compatible with features and/or specifications that may be added in the future.

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2. Operating Instructions
2.1 The Use of Remote Control

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2.2 To Use the Menus
Picture Setting

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Sound Setting
Setting Menu

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Channel Search
Note: This setting is only available in TV mode.

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Manual search description
1. Select Channel Search menu.
2. Select Manual Search and press OK key or ►arrow key to get Manual search sub-menu
Channel Edit Menu

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Other Adjustments
Notes:
• Passwords Setting, TV Lock, Blue Screen functions are available only in TV mode.
• Noise Reduction, DCR, DCC will be enable only when the Picture mode is Personal.
• Press Red key on remote control to reset Blue screen, Sleep time, Zoom, Noise Reduction, DCR,DCC, functions to
the default settings.

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Sound and OSD

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PC setting
Notes:
• If the PC is connected to the TV and no signal has been input from the PC for more than 30 seconds, the TV enters
the standby mode automatically.
• This setting is only available in VGA source

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Media Functions(USB)
TV USB port can be used to view JPEG photos, play mp3 music and Video files, and read text present in USB
devices.
Entering to USB Media:
Press the Direct USB key on remote to get USB Media menu as shown above
Or
Press the Source key and ▲/▼/◄/►keys on remote and select USB source to get USB Media menu as shown
above
Select the Media type (Photo/ Music/ Video/ Text) to be viewed and press OK key to enter into USB Media
and When USB drive is detected by the TV, USB drive is displayed as a folder on the screen as shown below. If
more then one USB is pluged to the TV two folders will be displayed. Select the required drive and press OK
key to view subfolder or files in the USB drive.
Notes:
• If USB storage device is plug-in to TV USB port, Media menu will pop up on TV screen irrespective of Input
Source .
• Files of selected Media type can only be viewed through USB. Media type can be any one amoung Photo / Music /
Video / Text.
Viewing Photos
1. Thumbnail of the available images will be displayed on the screen. If no images are displayed then select the
folder containing the Photos .
2. To select a particular image and to display it in fullscreen press key and press OK key.
Slide show starts automatically when image is viewed in full screen.
3. Press key to play/pause slideshow. Press to view previous or next image. Press key to stop
slideshow

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USB menu settings for Photo Slide show
Press OK key to get following Menu setup shown above.
1. [Transition Effect] : Select the slide transition as None, Top To Bottom, Bottom To Top, Left To Right, Right To
Left, Random.
2. [Rotate] : Rotate the select photo by 90° clock wise direction.
3. [Play Time] : Select the duration of time a photo is to be displayed.
4. [Information] : Display the information of the file.
Playing Music files
1. Thumbnail of the available music files will be displayed on the screen. If no files are displayed then select the
folder containing the music files.
2. To play particular music file select the required file and press OK key.
3. Press key to play/pause music. Press to play previous or next track. Press key to stop
Music play.
USB menu settings for Music play
Press OK key to get following Menu setup shown above.
1. [Repeat Mode] : Select the repeat mode as None, Single,Random,All.
2. [Sound Mode] : Select sound mode like Pop,Rock,Class,Dance,Music,Personal.
3. [DSS Effect] : Turn on or off TV DSS effect.
4. [Background Music] : Select it to on to turn off display and to get only sound from TV
5. [Information] : Display the information of the file.
Playing Video files
1. Thumbnail of the available video files will be displayed on the screen. If no files are displayed then select the
folder containing the video files.
2. To play particular video file select the required file and press OK key.
3. Press key to play/pause video. Press to play previous or next video. Press key to stop
video play.
USB menu settings for Video play
Press OK key to get following Menu setup shown above.
1. [Repeat mode] : Select the repeat mode as None, Single,All,Random.
2. [Information] : Display the information of the file.

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Reading Text files
1. Thumbnail of the available text files will be displayed on the screen. If no files are displayed then select the folder
containing the text files.
2. To read particular text file select the required file and press OK key.
3. Press ◄/►/▲/▼keys to browse the text. Press MENU key to stop text read.
USB menu settings for text read
Press OK key to get following Menu setup shown above.
1. [Next Page] : Select the duration of time a page is to be displayed.
2. [Display Mode] : Select the text display mode as 4:3 and 16:9.
Formats supported to multimedia mode: Photo, Music, and Video.
Remarks:
1. USB interface of digital multimedia player is not all-purpose. So when some USB devices could not be recognized,
the problem is usually not the performance failure but due to device driver.
2. Because USB devices and memory capability are different, the time needs for multimedia player to read
information are also different. So the information reading speed of the player temporarily getting slow are not the
performance failure.
3. The voltage supplied to USB interface is 5V, and the most electrical current is 500mA. When some interface
criteria of USB devices are different from standard USB protocol, digital multimedia player may be unable to
recognize USB devices correctly, which is normal status.
4. USB could be used as an interface to update software.
5. If some files source could not play because of the parameter decoding-limitation, the problem is not performance
failure.
6. The system can not support dynamic Gif format.

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2.3 How to Connect
You can enjoy standard-definition and high-definition digital programming (if available in your area), along with
standard-definition analog programming.
It is strongly recommended that you connect the antenna/cable input using a 75-ohm coaxial cable to receive
optimum picture quality. A 300- ohm twin lead cable can be easily affected by radio frequency interference, resulting
in signal degradation.
Cable or VHF/UHF(or VHF only)
High Definition Interface
You can enjoy high-definition programming by subscribing to a high-definition cable service or a high-definition
satellite service. For the best possible picture, make sure you connect this equipment to your TV via the HDMI or
component video (with audio) input on the back of your TV.
HDMI Connection
If the equipment has a DVI jack and not an HDMI jack, connect the DVI jack to the HDMI IN (with DVI-to-HDMI cable
or adapter) jack and connect the audio jack to the PC AUDIO IN jacks.
Component Signal Connection
Composite Signal Connection

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PC Connection
Use the TV as a monitor for your PC shown below with the HD15 to HD15 connection. This TV can also be
connected to a PC with DVI or HDMI output.
• Connect the PC IN jack to the PC using the HD15- HD15 cable with ferrite core (analog RGB) and audio cable.
• If the PC is connected to the TV and no signal has been input from the PC for more than 30 seconds, the TV enters
the standby mode automatically.
Connecting USB drive Connecting Earphone
Connecting VIDEO

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2.4 Front Panel Control Knobs

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3. Input / Output Specification
RGB Signal Input
15 - Pin Color Display Signal Cable
Pin No. Description Pin No. Description
1 Red Video 9 +5V
2 Green Video 10 Sync Ground
3 Blue Video 11 Not Used
4 Not Used 12 Serial Data for DDC
5 Ground 13 H-Sync.
6 Red Ground 14 V-Sync.
7 Green Ground 15 Serial Clock for DDC
8 Blue Ground
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

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Compatible Mode Table
LE32A3330/61
RGB Input Signal Timing
Dots × Lines
Vertical Horizontal Sync Polarity Presence Screen
Mode
Frequency Frequency Horizontal Vertical Horizontal Vertical FULL
(Hz) (KHz) (16:9)
640 X 480 59.9 31.5 NEG NEG YES YES YES
800 X 600 60 37.9 POS POS YES YES YES
1024 X 768 60 48.3 NEG NEG YES YES YES
1280 x 1024 60 - - - - - -
1360 X 768 60 47.7 POS POS YES YES YES