Service Manuals, User Guides, Schematic Diagrams or docs for : AOC LCD LE19K097 LE22K097 LE24K097 aoc_le19k097_le22k097_le24k097_lcd_tv

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19_22_24LCD TV AOC LE19_22_24K097

Service
Service
Service
LE19K097
LE22K097
LE24K097

TABLE OF CONTENTS

Description Page Description Page

Table of Contents............................................................1 6.2 Power Board..................................................27
Important Safety Notice...................................................2 6.3Led Board...............................................31
Revision List.........................................................3 6.4 Key Board.....................................................32
1. General Specification..................................................4 6.5 IR Board.......................................................33
2. Operating Instructions............................................5 7. Adjustment.......................................................34
2.1 The Use of Remote Control...................................5 8. Block Diagram........................................................36
2.2 To Use the Menu.................................................6 9. Schematic Diagram..........................................37
2.3 How to Connect................................................12 9.1 Main Board....................................................37
2.4 Front Panel Control Knobs..................................13 9.2 Power Board..................................................50
3. Input/Output Specification.......................................14 9.3 Inverter Board.................................................52
4. Mechanical Instructions.........................................16 9.4 Key Board.....................................................53
5. Repair Flow Chart ..............................................20 9.5 IR Board........................................................54
6. PCB Layout .......................................................25 10. Exploded View..............................................55
6.1 Main Board.......................................................25 11. BOM List......................................................58

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:
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 E19AM2NBWEG1NS

A00 Apr.31,2010 Initial Release E22AM2NBWEG1NS

A00 Apr.31,2010 Initial Release E24AM2NBWEG1NS

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. Unplug the base
.

2. Remove 11 screws to remove the rear cover.

3. Remove5screws and unplug 4 connectors to remove the main board.

16
4. Remove 4 screws and unplug 4 connectors to remove the power board.

17
5. Remove 7 screws to remove the bracket.

6. Unplug two speakers.

7.Remove the 1 connect to remove the IR board.

8.Remove the 1 screw and 1 connect to remove the LED board.

18
9. Remove the front bezel.

10. Unplug Key Board.

11.The panel

19
5. Repair Flow Chart
No Picture (LED Orange)

No picture

OK
NG
Check key board/IR board Change key board/IR board

OK
NG
Check 43V power supply Check the power supply circuit

Check main board standby power supply NG Change U751

NG Change U401
Check U401

NG
Check I2C bus Check I2C communication

20
Abnormal Display

NG
Check the source Reset source

NG
Check signal filter circuit Replace the filter or resistance

OK
NG OK
Check input RF signal Check TV system setup

OK OK
NG

Check LVDS cable Replace LVDS cable Check Tuner

OK
OK

No Sound Check panel Replace panel Replace Tuner
NG
Check the source Reset source

Check if mute

OK
NG
NG NG Check TV
Check input signal TV SIF Reset TV system
system

OK OK
OK NG
Check U401 Check U601 Change U601
NG
OK Change U401

NG
Check U601 Change U601

OK
NG
Check speaker Change speaker

21
No Power (No LED Indicator)
For 19
NG
Check power cord and board interface Plug in power cord and interface

NG
Check F901, BD901 Replace F901, BD901

NG
Check IC901 Replace IC901

OK
NG
Check T901 Replace T901

Check Q901 Q920 D901 NG Replace Q901 Q920 D901
D915 D910 D908 D913 D923 D915 D910 D908 D913 D923

For 22
NG
Check power cord and board interface Plug in power cord and interface

NG
Check F901, BD901 Replace F901, BD901

NG
Check IC901 Replace IC901

OK
NG
Check T901 Replace T901

Check Q901 Q920 D901 NG Replace Q901 Q920 D901
D908 D913 D908 D913

22
For 24
NG
Check power cord and board interface Plug in power cord and interface

NG
Check F901, BD901 Replace F901, BD901

NG
Check IC901 Replace IC901

OK
NG
Check T901 Replace T901

Check Q901 Q920 D901 NG Replace Q901 Q920 D901
D908 D913 D908 D913

No Display (LED Indicator Green)

Check the source NG Reset source
OK
NG
Check LVDS cable Reset LVDS cable
OK
NG
Check Q750, Q7501 Replace Q750, Q7501
OK
NG
Check Q401, Q402 Replace Q401, Q402
OK
NG
Check U401 Replace main board
OK
NG
Check panel Replace panel

23
Key Board

OSD is unstable or not working

N
Is Key Pad Board connecting normally? Connect Key Pad Board

N
Is Button Switch normally? Replace Button Switch

N
Is Key Pad Board Normally? Replace Key Pad Board

Check Main Board

24
6. PCB Layout
6.1Main Board
715G4035M1A000005B

25
26
6.2 Power Board
715G3762P01W30002Ufor 19"

27
28
715G3895P0AH20002U (for 22"_24")

29
30
6.3 Led Board
715G4100T01000004B

31
6.4 Key Board
715G4099K02000003U

32
6.5 IR Board
715G4098R01000004B

33
7. Adjustment

7.1 Auto color for signal slicering
7.1.1 General set-up
Equipment Requirements:
Knoica Minolta CS-200 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.

Note:
EU 2k10 models have no need to operate "AUTO_COLOR" function, due to EFUSE is set "Disable" within NVM for defult. These ADC values will be produced by Main chip (MT5363) interal defination.

7.2 White balance adjustment
Alignment method:
Initial Set-up:
1. Select source as "YPbPr".
2. Set Contrast = 58 and Brightness=48, Color=58, at Vivid mode.
3. Apply "80% white pattern or Flat80 pattern by Component video generator.

34
4. Enter factory mode menu: press MENU + Numeric keys 1999".

Alignment:
1. Apply Flat pattern (80% white pattern).
2. Set color temperature to "NORMAL".
3. At factory mode menu, adjust the Scaler R Gain, Scaler G Gain, Scaler B Gain 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 Scaler R Gain, Scaler G Gain, Scaler B Gain 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 Scaler R Gain, Scaler G Gain, Scaler B Gain 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

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