AOC LE22H067 User manual

21.5″&23.6″LCDTV AOC LE22(24)H067
1
Service
Service
Service
Horizontal Frequency
31~68KHz
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
6.2 Power Board………………..…….…….……….......32
6.3 LED Board...………………..…….…….……….......40
6.4 Key Board………………………..……..……….......40
6.5 IR Board………………………….……..……….......41
7. Adjustment……..………………………….................42
8. Block Diagram.…….................................................43
9. Schematic Diagram…..…………....………………...44
9.1 Main Board…………………………………...….......44
9.2 Power Board…………..….….……...………….......54
9.3 LED Board…….…………..….……...………….......60
9.4 Key Board……………….……….…………….........62
9.5 IR Board……...………….……….…………….........63
10. Exploded View………………………………….…...64
11. BOM List……………….………………….………….67
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 ……………………….…….…….....24
6. PCB Layout ………………..…………………....….......30
6.1 Main Board…………..………………...…….…….......30

2
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.)

3
Revision List
Version Release Date Revision Instructions Customer Model TPV Model
A00 Jun.7,2010 Initial Release
LE22H067 E22A2ZNKWEE6NN
LE24H067 E2CA6ZNKWEE6NN
A01 Dec.7,2010
Lead in the new LED board:
715G4614T01000004S
Update are as below:
Layout
Schematic Diagram
BOM List
LE22H067 E22A2ZNKWEE65N
LE24H067 E2CA6ZNKWEE65N
Lead in the new Power&LED board:
715G3798T02000004S&
715G4147P01H21002S&
715G4614T01000004S
Update are as below:
Layout
Schematic Diagram
BOM List
LE24H067 E2CA6ZNKWEAENN
A02 Jan.18,2011 Add New Model LE24H067 E2CA6ZNKWEM55N
A03 May.13,2011
Add new power board
715G4313P02000003S
Update are as below:
Repair Flow Chart
PCB Layout
Schematic Diagram
BOM List
LE22H067 E22A2ZNKWEE55N

4
1. General Specification
Model LE22H067/LE24H067
Panel Size LE22H067: 546 mm diagonal (21.5” viewable)
LE24H067: 598 mm diagonal (23.6” viewable)
Resolution 1920 x 1080
TV System NTSC standard ATSC standard (8-VSB, Clear-QAM)
Channel Coverage
VHF: 2 through 13
UHF: 14 through 69
Cable TV:
Mild band (A - 8 through A - 1, A through I)
Super band (J through W)
Hyper band (AA through ZZ, AAA, BBB)
Ultra band (65 through 94, 100 through 125)
Speaker 3 W x 2
Antenna Impedance 75Ω
Power Source 120V 60Hz, 50W
Standby Power Consumption <1W
Video/Audio Terminals Rear AV x1: S-Video/Video/Audio Input/Audio output.
S-Video Input* Y: 1 V (p-p), 75 ohm, negative sync.
C: 0.286 V(p-p) (burst signal), 75 ohm
Video/Audio Input VIDEO: 1 V(p-p), 75 ohm, negative sync. AUDIO: 500mv (rms)
Component Input
Rear Component x1:
Y: 1V(p-p), 75 ohm, including sync.
Pr/Cr: ±0.35V(p-p), 75 ohm Pb/Cb: ±0.35V(p-p), 75 ohm
AUDIO: 500mv (rms)
HDMI Terminals
HDMI INPUT: Rear HDMI x1; Side HDMI x1
HDCP compliant
E-EDID compliant
VGA Terminals
VGA INPUT:
Rear VGA (D-SUB 15 Pin) Input x1 E-EDID compliant
Audio Input: Mini-jack for stereo (3.5Ø )
Headphone Audio Output: Mini-jack for stereo (3.5Ø )
SPDIF Output Optical Digital Audio Out jack.
Size (W x H x D)
(With Base And Stand) (Mm)
LE22H067: 526.91x 394.95x 150
LE24H067: 571.2 x 420.2 x 160
Weight LE22H067: 3.75 Kg (with stand) / 3.5 Kg (w/o stand and base)
LE24H067: 4.2 Kg (with stand) / 3.9 Kg (w/o stand and base)
Wall Mount Size LE22H067: 100 x 100 mm (Wall mount kit is not included)
LE24H067: 100 x 100 mm (Wall mount kit is not included)
Wall-Mount Accessory Optional accessory and not included in standard package
Equipment:
Operation Temperature
Storage Temperature
35 ºC for moderate climates (Maximum ambient temperature)
-20 ºC~50 ºC
* S-Video Input
You can connect your TV set to a high-resolution video source (such as Super VHS videocassette recorder, Laser
Disc player, and DVD Home Theater Set) in order to provide maximum consumer viewing satisfaction.
Note:
1. Designs and specifications are subject to change without notice.
2. This model may not be compatible with features and/or specifications that may be added in the future.

5
2. Operating Instructions
2.1 The Use of Remote Control

6
2.2 To Use the Menus

7

8

9

10

11

12

13

14

15

16

17
2.3 How to Connect

18

19
2.4 Front Panel Control Knobs

20
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 SDA(Remote Control)
4 SCL(Remote Control) 12 Serial Data for DDC
5 Ground 13 H-Sync.
6 Red Video Ground 14 V-Sync.
7 Green Video Ground 15 Serial Clock for DDC
8 Blue Video 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 NC
15 SCL 16 SDA
17 DDC/CEC Ground 18 +5V Power
19 Hot Plug Detect