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32_42LCD TV AOC LC32_42K0D3D
Service
Service
Service
LC32K0D3D
LC42K0D3D
TABLE OF CONTENTS
Description Page Description Page
Table of Contents............................................................1 6.2 Power Board..................................................34
Important Safety Notice...................................................2 6.3 Key Board.....................................................38
Revision List.........................................................3 6.4 IR Board.......................................................39
1. General Specification..................................................4 7. Adjustment.......................................................40
2. Operating Instructions............................................6 8. Block Diagram........................................................42
2.1 The Use of Remote Control...................................6 9. Schematic Diagram..........................................43
2.2 To Use the Menu.................................................7 9.1 Main Board....................................................43
2.3 How to Connect................................................11 9.2 Power Board..................................................56
2.4 Front Panel Control Knobs..................................18 9.3Key Board.....................................................58
3. Input/Output Specification.......................................19 9.4 IR Board........................................................59
4. Mechanical Instructions.........................................21 10. Exploded View..............................................60
5. Repair Flow Chart ..............................................26 11. BOM List......................................................62
6. PCB Layout .......................................................32
6.1 Main Board.......................................................32
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
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 TPV Model
A00 Apr.31,2010 Initial Release E32AA2NBW3G1NS
A00 Apr.31,2010 Initial Release E42AG2NBW3G1NS
3
1. General Specification
4
2. Operating Instructions
2.1 The Use of Remote Control
5
2.2 To Use the Menus
6
7
8
9
10
11
2.3 How to Connect
12
2.4 Front Panel Control Knobs
13
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 No Pin
2 Green Video 10 Sync Ground
3 Blue Video 11 RXD
4 TXD 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
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
14
3.3 AV/S-Video/Component Video Inputs
AV (Composite Video Input)
Video1
System PAL, SECAM and DVB-T
Amplitude 1Vpp (300mV-sync, 700mV-video)
Impedance 75 ohm terminated
S-Video (Y / C Input)
S-Video2
System PAL/ SECAM
Y signal amplitude 1VppY-signal
C signal amplitude +/-700mV C-signal
Impedance 75 ohm terminated
Component (Y, Pb/Cb, Pr/Cr Input)
Video3
15
4. Mechanical Instructions
1. Remove the 4 screws to remove the stand base
.
2. Remove 19 screws to remove the rear cover.
3. Remove 5 screws and unplug 4 connectors to remove the main board.
16
4. Remove 5 screws and unplug 2 connectors to remove the power board.
17
5. Remove 16 screws to remove the bracket.
6. Remove 4 screws to remove two speakers.
7.Remove the screw to remove the IR board.
18
7. Remove the connector to remove Key Board.
10.The panel
19
5. Repair Flow Chart
FOR LC-32K0D3D
20
FOR LC-42K0D3D
21
FOR LC-32/42K0D3D
22
23
24
25
26
27
28
29
30
31
6. PCB Layout
6.1Main Board
715G3805M1A000005B
32
33
6.2 Power Board
715G4088P0BW30003Ufor 32"
34
35
715G3829P01W30003U (for 42")
36
37
6.3 Key Board
715G4060K01000004B
38
6.4 IR Board
715G4061R01000004B
39
7. Adjustment
7.1 Auto color for signal slicering
7.1.1 General set-up
Equipment Requirements:
Minolta CA-210 or equivalent instrument.
Quantum Data Pattern Generator 881 or equivalent instrument.
Input requirements:
Input signal type: YPbPr signal
1. 1080i/25mode, TVBar100 pattern by QuantumData 881.
2. Select Picture mode to "Personal" mode and adjust the x, y data.
Input Signal Strength: 1 Vpp for Y signal ; 700 mVpp for Pb & Pr signal
Input Injection Point: YPbPr (RAC jack)
1080i/25, TVBar100 pattern
Alignment method:
Initial Set-up:
1. Select source as "YPbPr".
2. Set Smart Picture mode as "Personal" and then adjust Contrast = 58,
Brightness=48, Color=58, set Color Temp. to be "cool" mode.
3. Apply "TVBar100" pattern which is color bar pattern by signal generator.
4. Enter "factory mode menu": press MENU + Numeric keys "1999"
Alignment:
1. At factory mode menu, select AUTO_COLOR item. Then press "OK" key of remote control to adjust ADC_GAIN_R, ADC_GAIN_G, ADC_GAIN_B and ADC_OFFSET_R, ADC_OFFSET_G, ADC_OFFSET_B. Then store those values to NVM.
2. Check the 16 grayscale pattern should be distinguished and color bar is correct
3. Reset AV setting, picture mode shall be recalled to be "Vivid" and Contrast=58, Brightness=48; Color=58.
7.2 White balance adjustment (B)
Alignment method:
Initial Set-up:
1. Select source as "YPbPr".
2. Set Contrast = 58 and Brightness=48, Color=58, at normal menu mode.
3. Apply "80% white pattern or Flat 80 pattern by Component video generator.
4. Enter factory mode menu: press MENU + Numeric keys 1999".
Alignment:
40
1. Apply Flat80 pattern (80% white pattern).
2. Set color temperature to "NORMAL".
3. At factory mode menu, adjust the CLR TEMP R, CLR TEMP G, CLR TEMP B values to meet "NORMAL" color coordinates specification below. Then store those values to NVM
4. Set color temperature to "COOL".
5. At factory mode menu, adjust the CLR TEMP R, CLR TEMP G, CLR TEMP B values to meet "COOL" color coordinates specification below. Then store those values to NVM
6. Set color temperature to "WARM".
7. At factory mode menu, adjust the CLR TEMP R, CLR TEMP G, CLR TEMP B values to meet "WARM" color coordinates specification below. Then store those values to NVM
Color temperature Normal/Warm/Cool (x, y) co-ordinates specification:
`
Picture Mode x y
Normal (9000oK) 0.289