AOC LE32A1330/61, LE40A1330/61 Schematic
31.5″&39″LCD TV AOC LE32A1330/61-LE40A1330/61
Service
Service
Service
TABLE OF CONTENTS
Description Page Description Page
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……..……………….…….……….....17
2.4 Front Panel Control Knobs…….………….……….....19
3. Input/ Output Specification………....................…....20
4. Mechanical Instructions…………………….................22
5. Repair Flow Chart ……………………….…….…….....25
6. PCB Layout ………………..………………....….......32
SAFETY NOTICE
ANY PERSON ATTEMPTING TO SERVICE THIS CHASSIS MUST FAMILIARIZE HIMSELF WITH THE CHASSIS
6.1 Main Board…………..……………...…….…….......32
6.2 Power Board……...…………..….…….……….......35
6.3 Key Board…...………………………………….......37
6.4 IR Board…...…………………………………….......37
7. Adjustment..............................................................38
8. Block Diagram.…….................................................39
9. Schematic Diagram…..…………....………………...40
9.1 Main Board…………………………………...….......40
9.2 Power Board…………..….….……...………….......49
9.3 Key Board……………….……….…………….........51
9.4 IR Board…...…………….……….…………….........52
10. Exploded View………………………………….…...53
11. BOM List……………….………………….………….55
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
1
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.)
2
Revision List
Version Release Date Revision Instructions Customer Model TPV Model
LE32A1330/61 E32C1KNCCQACNNX
A00 Sep.5,2012 Initial release
LE40A1330/61 E39C2KNCCQA1NNX
3
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.
4
2. Operating Instructions
2.1 The Use of Remote Control
5
2.2 To Use the Menus
Picture Setup
Note: Certain screen setups may be unavailable or have different options in accordance with the input
sources.
6
Picture Setup (For PC source only)
Note:
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.
7
Audio Setup
8
Features Setup
9
Channel Search
This setup is available in TV mode only.
Note: Make sure you have connected RF signal cable before performing channel search.
10
Manual search description
11
Computer Setup
12
USB Media Center
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:
13
Play Music files
14
Playing Music files
USB menu settings for Music play
Playing Video files
USB menu setting for video play
Reading Text files
15
USB menu setting for text read
16
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
17
Video Out Signal Connection
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
18
2.4 Front Panel Control Knobs
19
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 Clock13 CEC 14 NC
15 SCL 16 SDA
17 DDC/CEC Ground 18 +5V Power
19 Hot Plug Detect
20
Compatible Mode Table
LE32A1330/61
Analog RGB Input Signal Timing
Item
Resolution
1 720x400 31.5 N 70 P 28
2
3 800x600 37.9 P 60 P 40.0
4
5
HDMI Input Signal Timing
PC Timing
Item
1
2 800x600 37.9 P 60. P 40.0
3
4
Video Timing
No Mode Resolution V. Freq. (Hz) H. Freq. (KHz)
1 480i 720(1440)x480 60 35 27 4:3/16:9
2 480P 640x480 60 31.5 25 4:3
3 480p 720x480 60 31.5 27 4:3/16:9
4 576i 720(1440)x576 50 15.6 27 4:3/16:9
5 576p 720x576 50 31.3 27 4:3/16:9
6 720p 1280x720 60 45 74.2 16:9
7 720p 1280x720 50 37.5 74.3 16:9
8 1080i 1920x1080 50 28.1 74.3 16:9
9 1080i 1920x1080 60 67.4 148.4 16:9
10 1080p 1920x1080 60 67.5 148.5 16:9
11 1080p 1920x1080 50 56.3 148.5 16:9
LE40A1330/61
RGB Input Signal Timing
Dots × Lines
640 X 480 59.9 31.5 NEG NEG YES YES YES
720 X 400 69.6 31.3 NEG POS 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
1360 X 768 60 47.7 POS POS YES YES YES
1920 X 1080 60 67.4 POS POS YES YES YES
640x480 31.5 N 60 N 25.2
1024x768 48.4 N 60 N 65.0
1360x768 47.7 P 60 p 85.8
Resolution
640x480 31.5 N 60 N 25.2
1024x768 48.4 N 60 N 65.0
1360x768 47.7 P 60 p 85.8
Vertical Horizontal Sync Polarity Presence
Frequency Frequency Horizontal Vertical Horizontal Vertical FULL
(Hz) (KHz) (16:9)
Horizontal Vertical
Nominal
Freq. (KHz)
Horizontal Vertical
Nominal
Freq. (KHz)
Sync
Polarity
Sync
Polarity
Nominal
Freq.(Hz)
Nominal
Freq.(Hz)
Sync
Polarity
Sync
Polarity
Pixel clock
(MHz)
Nominal Pixel
Clock (MHz)
Nominal Pixel
Clock (MHz)
Screen Mode
Screen
Mode
21
4. Mechanical Instructions
1. Remove the screws to remove BASE.
2. Remove the screws to remove REAR COVER.
22
3. Remove the screws to remove SPEAKERS, MAIN BOARD and POWER BOARD.
4. Remove the IR board.
23
5. Remove the screws to remove the Panel.
24
p
p
5. Repair Flow Chart
1. No power
No power (LED “Off”)
Check the AC input and
the
ower is “ON”?
Yes
Power board
out
ut=5.2V?
Yes
Check the IR board and LED
Replace the IR board
No
Replace the main board
No
Power “On”
No
Replace the power board
25
2. Can’t start
Can’t start (LED red)
Power board output＝12/16V?
Yes
Check the power key is under control?
No
Check the IR receiver is normal?
No
Replace the power board
Yes
Replace the key board
Yes
Replace the IR board
No
Replace the main board
No
Replace the Power board
26
3. Abnormal display
Abnormal Display
Check the source
Yes
Enter factory mode to do
“EEPROM initial”&“Reset”
No
No
Reset the source
Check the main board
Yes
Check the LVDS cable
Yes
Check the panel
No
Replace the panel
No
Replace the main board
No
Replace the LVDS cable
27
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