AOC LE32K0D7D(U) User manual

31.5″& 42″LCDTV AOC LE32K0D7D(U)/LE42K0D7D(U)
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Service
Service
Service
Horizontal Frequency
31~67KHz
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………………..…….…….……….......27
6.3 Key Board………………………..……..……….......33
6.4 IR Board………………………….……..……….......33
7. Adjustment……..………………………….................34
8. Block Diagram.…….................................................35
9. Schematic Diagram…..…………....………………...37
9.1 Main Board…………………………………...….......37
9.2 Power Board…………..….….……...………….......54
9.3 Key Board……………….……….…………….........63
9.4 IR Board……...………….……….…………….........65
10. Exploded View………………………………….…...66
11. BOM List……………….………………….………….70
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……..……………….…….……….....10
2.4 Front Panel Control Knobs…….………….……….....11
3. Input/Output Specification…………....................…....12
4. Mechanical Instructions…………………….................14
5. Repair Flow Chart ……………………….…….…….....18
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 Customer Model TPV Model
A00 Aug.30,2010 Initial release
LE32K0D7D E32AA2NBWEG12N
LE42K0D7D E42AA2NBWRG12N
LE32K0D7DU E32AA2NBWEG22N
LE42K0D7DU E42AA2NBWRG22N
A01 May.13,2011 Add new model
LE32K0D7D E32AA2NBWEG32N
LE42K0D7D E42AA2NBWRG32N
LE32K0D7DU E32AA2NBWEG42N
LE42K0D7DU E42AA2NBWRG42N

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1. General Specification
Model LE32K0D7D(U) LE42K0D7D(U) LC32K0D3D LC42K0D3D
Screen Size 32” diagonal 42” diagonal 32” diagonal 42” diagonal
Resolution 1920 x 1080
OSD Language
Bulgarian, Croatian, Czech, Danish, Dutch, English, Finnish, French,
Gaeilge, German, Greek, Hungarian, Italian, Norwegian, Polish,
Portuguese, Rumanian, Russian, Serbian, Slovakian, Slovenian, Spanish,
Swedish, Turkish, Latvian, Estonian, Lithuanian, Ukrainian
View Angle 178°(H)/178°(V)
Brightness 450 cd/m2 450 cd/m2 450 cd/m2 500 cd/m2
Video System PAL/SECAM/DVBT/DVBC
Audio System B/G, D/K, I, LL’ B/G, D/K, I, LL’ B/G, D/K, I, LL’ B/G, D/K, I, LL’
Speaker Output 10W x 2 Speaker: 8W x 2
Woofer: 10W 10W x 2 10W x 2
Rear Connectors
Component Video & L/R Audio
Input
EXT(RGB/AV)
SPDIF Output
HDMI
Tuner Input
PC IN: D-SUB & PC Audio
Component Video & L/R Audio Input
SCART
SPDIF Output
HDMI
Side Connectors
Tuner Input
COMMON INTERFACE
PC IN: D-SUB & PC Audio
Earphone Output
HDMI
USB
COMMON INTERFACE
AV In
Earphone Output
HDMI
USB
Input Voltage 220-240V, 50/60Hz
Power Consumption ≤100W ≤120W ≤115W ≤200W
Standby Power
Consumption ≤0.5W
Set Dimension(W X H X D)
(With Base And
Stand)(mm)
775 x 563 x 210 1005 x 691 x
230 779 x 553 x 251 1011 x 698 x 278
Set Dimension(W X H X D)
(W/O Base And
Stand)(mm)
775 x 521 x 46 1005 x 651 x 46 779 x 553 x 98 1011 x 650 x 108
Net Weight (Kg) 10.5 17 12 20
Wall Mount Size 200 x 100mm 200 x 200mm 200 x 200mm 400 x 200mm
Operation Temperature 0ºC~35ºC
USB Photo/Music/Video
Supported Formats
Picture JPEG
Baseline
Progressive
Audio MP3 MPEG1 Layer 3
8~48 KHz
8~576 Kbps
Mono/Stereo
Video MPEG1 MPG MPEG-1 Video
MPEG4 AVI, MP4 MPEG-4

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2. Operating Instructions
2.1 The Use of Remote Control

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2.2 To Use the Menus

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8

9

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2.3 How to Connect

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2.4 Front Panel Control Knobs

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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 9 +5V (Supply from PC)
2 Green 10 Sync Ground
3 Blue 11 NC
4 NC 12 Bi-directional data(SDA)
5 Ground 13 H-Sync.
6 Red Ground 14 V-Sync. (VCLK)
7 Green Ground 15 Data clock(SCL)
8 Blue 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 Reserved (N.C. on device)
15 SCL 16 SDA
17 DDC/CEC Ground 18 +5V Power
19 Hot Plug Detect

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3.3 Compatible Mode Table
Item H.Freq. (KHz) Mode Resolution V.Freq. (Hz)
1 31.469 IBM VGA 12H 640x480 59.940
2 35.156 VESA 800x600 56.250
3 37.879 VESA 800x600 60.317
4 48.363 VESA 1024x768 60.004
5 44.772 1280x720 59.855
6 47.776 CVT 2.3MA 1280x768 60
7 47.7 VESA 1360x768 60
8 63.981 VESA 1280x1024 60.020
9 65.29 VESA 1680x1050 60
10 66.587 VESA reduced blanking mode 1920x1080 60.0

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4. Mechanical Instructions
LE32K0D7D(U)
1. Remove the screws to remove the stand ass’y.
2. Remove the screws to remove rear cover.

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3. Remove the screws to remove bracket, AC cover, main board and power board.
4. Remove the screws to remove IR board, key board, speakers and bracket and separate the panel and bezel.

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LE42K0D7D(U)
1. Remove the screws to remove the stand ass’y and rear cover.
2. Remove the screws to remove bracket, speakers, main board and power board.

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3. Remove the screws to remove IR board, key board and bracket and separate the panel and bezel.

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5. Repair Flow Chart
1. No power
No power (LED “Off”)
Check the AC input and
the
p
ower is “ON”? Power “On”
Check the IR board and LED
Replace the IR board
Replace the main board
Power board output=5V? Replace the power board
No
Yes
No
Yes
No

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2. Can’t start
Can’t start（LED red）
Replace the main board
Replace the Power board
No
Yes
No
Yes
No
No
Power board output＝24V?
Check the power key is under control?
Check the IR receiver is normal?
Replace the power board
Replace the key board
Yes
Replace the IR board

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3. Abnormal Display
Abnormal Display
Reset the source
Check the source
Check the panel
Replace the main board
Replace the LVDS cable
Replace the panel
No
No
No
Yes
Yes
Yes
No
No
Check the main board
Enter factory mode to do
“EEPROM initial”&“Reset”
Check the LVDS cable