Haier LT26M1CA, LT26M1C Schematic
26”LCD TV Haier LT26M1CA<26M1C
Service
Service
Service
30~80 kHz
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 Menu…...…………………….…….......10
2.3. How To Connect…….…………………….……….....20
2.4. Front Panel Control Knobs……………….……….....26
3. Input/Output Specification…………....................…....27
4. Mechanical Instructions…………………….................29
5. Repair Flow Chart ……………………….…….…….....33
6. PCB Layout ………………..………………....….......37
6.1.Main Board………………..……………...……….......37
SAFETY NOTICE
ANY PERSON ATTEMPTING TO SERVICE THIS CHASSIS MUST FAMILIARIZE HIMSELF WITH THE CHASSIS
6.2.Power Board……………..………….……….......39
6.3.Key Board………………………..……….......40
6.4.IR Board…………………………..……….......40
7. White-Balance, Luminance Adjustment...................41
8. Block Diagram.……...........................................43
9. Wiring Diagram.……...........................................44
10. Schematic……………...…………..………………...45
10.1 Main Board………………………………...….......45
10.2.Power Board………….…………...………….......64
10.3.Key Board……………….……….………….......65
10.4.IR Board……………………………..……….......66
11. Exploded View………………………………….…...67
12. BOM List……………….…………………………….70
13. Different Parts List…………….…………………119
Horizontal Frequency
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
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26”LCD TV Haier LT26M1CA<26M1C
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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26”LCD TV Haier LT26M1CA<26M1C
Revision List
Version Release Date Revision Instructions Model Name TPV Model
E268M2NBW9H3NN
A00 Jun.-12-2008 Initial Release LT26M1CA
E268M2NBW9H32N
A01 Sep.-25-2008 Initial Release LT26M1C E26RM2NBW9H62N
A02 Dec.-03-2008 Update BOM
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26”LCD TV Haier LT26M1CA<26M1C
1. General Specification
Items Specification
Panel Type V260B1-L11 CMO 26" panel
Driving system TFT-LCD CMO Panel
Aspect Ratio 16:9
Resolutions 1366 x768
LCD Panel
OSD Language
ENHANCEMENT
CONNECTIONS
WEIGHT & DIMENSION
Brightness
Contrast 800:1
Pixel Pitch 0.282mm x0.282mm
Display colors 16.7 million
Color Temperature Cool / Warm/normal
English, German, French, Italian, Spanish, Portuguese, Dutch,
Danish, Finnish, Swedish, Norwegian, Polish, Russian, Greek
Sound Output (RMS Watts) 5 W
Sound Mode Rock, Pop, Live, Dance, Techno, Classic, Soft
Picture Formats
Picture Mode User, Cinema, Sport, Vivid, Hi-bright
Rear Connectors
Side Connectors
Product Dimension
(WxDxH)
Net Weight 8.8 kg
500 cd/㎡
Automatic, Panorama, 4:3, Movie expand 14:9,
Movie expand 16:9, 16:9 subtitle, Wide screen
Tuner input (75 OHM)
SCART 1
PC IN :VGA and Audio cable
Component Video and L/R Audio input
SPDIF Output (Digital audio out)
AV L/R Audio Output
HDMI 1
Earphone Output
AV In (Composite Audio/ Video)
S-Video
HDMI 2
Common Interface
652 mm
480 mm
220 mm
POWER
Operation (Max.) < 55 W
Standby < 1W
AC100-240V
Mains Power
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1.5A
50-60Hz
26”LCD TV Haier LT26M1CA<26M1C
2. Operating Instructions
2.1 The Use of Remote Control
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Basic Operation
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2.2 To Use the Menus
OSD SETTING
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2.3 How to Connect
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2.4 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 Video 9 Mandatory +5V Supply for PC Bypass
2 Green Video 10 Sync Ground
3 Blue Video 11 SDA(Remote Control)
4 SCL(Remote Control) 12 Bi-directional Data (SDA) for PC Bypass
1
6
11 15
5
10
5 Ground 13 H-Sync.
6 Red Video Ground 14 V-Sync.
7 Green Video Ground 15 Data Clock (SCL) for PC Bypass
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
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26”LCD TV Haier LT26M1CA<26M1C
3.3 TV Signal type
1. RF Signal: Aerial input / 10mV(30-100dBuV)
2. Video signal:
a) CVBS input (RCA jack) / 1Vpp (300mV-sync, 700mV-video.)
b) S-video input / 1VppY-signal, +/-300mV C-signal
c) SCART input: CVBS、RGB signal ( for WE model only)
d) Component video in(YPbPr input)/ 1Vpp Y signal, +/-350mV Pb, Pr signal
e) HDMI input: Compliance with HDMI Specification 1.3a. 480i/p, 576i/p, 720p, 1080i/p signal handling capability.
3. Audio signal:
Audio (1) R/L for AV IN(AV and S-Video).
Level: - Nominal: 0.5 V rms.
- Maximum: 1.5 V rms.
- Impedance > 10 k .
Audio (2) R/L for SCART IN
Level: - Nominal: 0.5 V rms.
- Maximum: 1.5 V rms.
- Impedance > 10 k .
Audio (3) R/L for Component video IN.
Level: - Nominal: 0.5 V rms.
-Maximum: 1.5 V rms.
-Impedance > 10 k .
Audio (4) digital audio for HDMI IN.
4. SCART output: (for WE model only)
Video: TV output 1Vpp / Impedance: 75Ω.
Audio: R/L output (from TV)
Level: Nominal: 0.5 V rms. Impedance < 10 k.
5. Headphone
Audio: R/L output –10mW at 32Ω.
3.5mm stereo jack. Impedance is between 8 and 600.
3.4 PC Timings List
Mode Resolution Dot Clock
Established
Timing
Standard Timing 1280 x 720--60Hz 74.25
720 x 400--70Hz 28.32
640 x 480--60Hz 25.175
640 x 480--67Hz 30.24
640 x 480--72Hz 31.5
640 x 480--75Hz 31.5
800 x 600--56Hz 36
800 x 600--60Hz 40
800 x 600--72Hz 50
800 x 600--75Hz 49.5
832 x 624--75Hz 57.28
1024 x 768--60Hz 65
1024 x 768--70Hz 75
1024 x 768--75Hz 78.75
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26”LCD TV Haier LT26M1CA<26M1C
4. Mechanical Instructions
1. Remove the 3 screws to remove the stand.
2. Remove 9 screws to remove the rear cover.
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26”LCD TV Haier LT26M1CA<26M1C
3. Remove the screws to remove the SHIELDING-EMI
4. Remove 2 screws to remove the bkt-vesa.
5. Release the connectors.
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