Haier L22C360 User manual

SERVICE MANUAL
LCD TV
Model No. L22C360
Chassis
MST 6M48
This service information is designed for experienced repair technicians only and is not designed for use by the general public.
It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product.
Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to service or repair
the product or products dealt with in this service information by anyone else could result in serious injury or death.
Haier Group
©2009 Qingdao Haier Electronics Co., Ltd.
All rights reserved. Unauthorized copying and distribution is a violation of law.
WARNING

1-1. Table of Contents
1. General Information...........................................................................
1-1. Table of Contents
1-3. Important Notice
4
Chapter 1: General Information
1
4
1-2. General Guidelines
1-4. How to Read this Service Manual
4
7
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Service Manual
Model No.:
- 01 -
3. Location of Controls and Components...........................................
3-1. Board Location
3-2. Main Board & AV Board
3-3. Power Board
3-4. LCD Panel
4. Disassemble and Assemble..........................................................
4-1 Remove the Pedestal
7
8
8
8
8
11
12
15
15
4-2 Remove the Back Cover 15
4-3 Remove the Adhesive Tape 15
4-4 Remove the Terminal Bracket 16
4-5 Remove the Power Module 16
4-6 Remove the Main Board 16
4-7 Remove the Speaker 17
4-8 Remove the Remote Control Board 17
5. Installation Instructions..…....………………...........………….........18
5-1 External Equipment Connections 18
5-2 HDMI Connections 21
6. Operation Instructions....…....………………...........………….........24
6-1 Front Panel Controls
6-2 Back Panel Controls
6-3 Universal Remote Control
24
24
25
7. Electrical Parts…....………………...........…………......................... 26
7-1. Block Diagram
7-2. Circuit Diagram
26
27
8. TV OPERATION........………….........................................................34

Service Manual
Model No.:
- 02 -
9. Trouble-shooting………….............................................................. 37
9-1. Simple Check 37
9-2. Main Board Failure Check
9-3. Panel Failure
38
50

1-2. General Guidelines
When servicing, observe the original lead dress. If a short circuit is found, replace all parts
which have been overheated or damaged by the short circuit.
After servicing, see to it that all the protective devices such as insulation barriers, insulation
papers shields are properly installed.
After servicing, make the following leakage current checks to prevent the customer from
being exposed to shock hazards.
1) Leakage Current Cold Check
2) Leakage Current Hot Check
3) Prevention of Electro Static Discharge (ESD) to Electrostatically Sensitive
1-3. Important Notice
1-3-1. Follow the regulations and warnings
Most important thing is to list up the potential hazard or risk for the service personnel to
open the units and disassemble the units. For example, we need to describe properly
how to avoid the possibility to get electrical shock from the live power supply or charged
electrical parts (even the power is off).
This symbol indicates that high voltage is present inside.It is dangerous to
make any king of contact with any inside part of this product.
This symbol indicates that there are important operating and maintenance
instructions in the literture accompanying the appliance.
1-3-2. Be careful to the electrical shock
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to rain or excessive moisture. This TV must not be exposed to dripping or splashing water,
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1-3-3. Electro static discharge (ESD)
Some semiconductor (solid state) devices can be damaged easily by static electricity. Such
components commonly are called Electrostatically Sensitive (ES) Devices. The following
techniques should be used to help reduce the incidence of component damage caused by
electros static discharge (ESD).
1-3-4. About lead free solder (PbF)
This product is manufactured using lead-free solder as a part of a movement within the
consumer products industry at large to be environmentally responsible. Lead-free solder
must be used in the servicing and repairing of this product.
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Special parts which have purposes of fire retardant (resistors), high-quality sound
(capacitors), low noise (resistors), etc. are used.
When replacing any of components, be sure to use only manufacture's specified parts
shown in the parts list.
Safety Component
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Service Manual
Model No.:
- 03 -

1-3-6 Safety Check after Repairment
- 04 -
Service Manual
Model No.:
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in the original positions, or whether there are the positions which are deteriorated around
the serviced places serviced or not. Check the insulation between the antenna terminal or
external metal and the AC cord plug blades. And be sure the safety of that.
General Servicing Precautions
1. Always unplug the receiver AC power cord from the AC power source before;
a. Removing or reinstalling any component, circuit board module or any other receiver
assembly.
b. Disconnecting or reconnecting any receiver electrical plug or other electrical
connection.
c. Connecting a test substitute in parallel with an electrolytic capacitor in the receiver.
CAUTION: A wrong part substitution or incorrect polarity installation of electrolytic
capacitors may result in an explosion hazard.
2. Test high voltage only by measuring it with an appropriate high voltage meter or other
voltage measuring device (DVM, FETVOM, etc) equipped with a suitable high voltage
probe.
Do not test high voltage by "drawing an arc".
5. Do not defeat any plug/socket B+ voltage interlocks with which receivers covered by this
service manual might be equipped.
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3. Do not spray chemicals on or near this receiver or any of its assemblies.
4. Unless specified otherwise in this service manual, clean electrical contacts only by
applying the following mixture to the contacts with a pipe cleaner, cotton-tipped stick or
comparable non-abrasive applicator; 10% (by volume) Acetone and 90% (by volume)
isopropyl alcohol (90%-99% strength).
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Capacitors may result in an explosion hazard.
6. Do not apply AC power to this instrument and/or any of its electrical assemblies unless
all solid-state device heat sinks are correctly installed.
7. Always connect the test receiver ground lead to the receiver chassis ground before
connecting the test receiver positive lead.
Always remove the test receiver ground lead last. Capacitors may result in an explosion
hazard.
9. Remove the antenna terminal on TV and turn on the TV.
10. Insulation resistance between the cord plug terminals and the eternal exposure metal
should be more than Mohm by using the 500V insulation resistance meter.
11. If the insulation resistance is less than M ohm, the inspection repair should be required.
If you have not the 500V insulation resistance meter, use a Tester. External exposure
metal: Antenna terminal Headphone jack

Service Manual
Model No.:
- 05 -
Electrostatically Sensitive (ES) Devices
1-3-7. Ordering Spare Parts
1. Immediately before handling any semiconductor component or semiconductor-
equipped assembly, drain off any electrostatic charge on your body by touching a known
earth ground. Alternatively, obtain and wear a commercially available discharging wrist
strap device, which should be removed to prevent potential shock reasons prior to applying
power to the unit under test.
2. After removing an electrical assembly equipped with ES devices, place the assembly
on a conductive surface such as aluminum foil, to prevent electrostatic charge buildup or
exposure of the assembly.
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to damage ES devices.
7. Immediately before removing the protective material from the leads of a replacement
ES device, touch the protective material to the chassis or circuit assembly into which the
device will be installed.
CAUTION: Be sure no power is applied to the chassis or circuit, and observe all other
safety precautions.
3. Use only a grounded-tip soldering iron to solder or unsolder ES devices.
Some semiconductor (solid-state) devices can be damaged easily by static electricity.
Such components commonly are called Electrostatically Sensitive (ES) Devices.
Examples of typical ES devices are integrated circuits and some field-effect transistors
and semiconductor "chip" components. The following techniques should be used to help
reduce the ncidence of component damage caused by static by static electricity.
4. Use only an anti-static type solder removal device. Some solder removal devices not
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6. Do not remove a replacement ES device from its protective package until immediately
before you are ready to install it.
(Most replacement ES devices are packaged with leads electrically shorted together by
conductive foam, aluminum foil or comparable conductive material).
8. Minimize bodily motions when handling unpackaged replacement ES devices.
(Otherwise harmless motion such as the brushing together of your clothes fabric or the
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an ES device.)
Please include the following informations when you order parts. (Particularly the Version
letter)
1. Model number, Serial number and Software Version
The model number and Serial number can be found on the back of each product and the
Software Version can be found at the Spare Parts List.
2. Spare Part No. and Description
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- 06 -
Service Manual
Model No.:
1-3-8. Photo used in this manual
The illustration and photos used in this Manual may not base on the final design of
products, which may differ from your products in some way.
1-4. How to Read this Service Manual
Using Icons:
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each icon is described in the table below:
Note:
A “note” provides information that is not indispensable, but may nevertheless be valuable
to the reader, such as tips and tricks.
Caution:
A “caution” is used when there is danger that the reader, through incorrect manipulation,
may damage equipment, loose data, get an unexpected result or has to restart(part of) a
procedure.
Warning:
A “warning” is used when there is danger of personal injury.
Reference:
A “reference” guides the reader to other places in this binder or in this manual, where he/
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Service Manual
Model No.:
- 07 -
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Model L22C360
Screen Size 21.5inch
Aspect Ratio 16:9
Resolution 1366*768
Response Time (ms) 6.5 (GRAY TO
GRAY)
Angel of View 176o
Color Display 16.7M
No. of Preset Channels 99
OSD Language English
Color System PAL
Audio System DK, BG, I
Audio Output Power
(Built-in) (W) 3W×2
Audio Output Power
(outer) (W) No
Total Power Input (W) 60W
Voltage Range (V) AC100V-240V
Power Frequency (Hz) 50~60Hz
Net Weight (KG) 4.95
Gross Weight (KG) 6.2
Net Dimension (MM) 530*97*352
Packaged Dimension
(MM) 586*200*453

- 08 -
Service Manual
Model No.:
3. Location of Controls and Components
3-1 Board Location
No. Part Number Description
3-2 Main Board & AV Board
A Board
B Board
A Board DC1KK0M0101M Main Board
B Board 514C2411M14 Power Board

Service Manual
Model No.:
- 09 -
3-2-1 Function Description:
Main Board
Process signal which incept from exterior equipment then translate into signal that panel
can display.
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Main board connector
Power connectors (CN101)
CN101
Notes:
CN101-Pin 3: Backlight on/off:
The system can turn on or turn off the backlight of TFT LCD Panel through the power
supply unit path.
CN101-Pin5: System power on / standby
System board will use this pin to control system power.
CN101-Pin 2: Control the luminance of backlight
The system can generate the PWN signal to control the strength of TFT LCD Panel’s
backlight through this connector
Pin number Signal name
3
4
5POWER ON/OFF
6+5VSTB
7
+5V
8
+5V
9
10
GND
11
GND
12 +12V
+12V
BL ON
1GND
2BRIGHT
+5V
GND
13

- 10 -
Service Manual
Model No.:
Pin number Signal name Description
1 LED_R LAMP RED
2 LED_G LAMP GREEN
3
4 IR REMOTE CONTROL
5 GND GND
6 5V POWER FOR REMOTE
Pin number Signal name Description
1 KEY1
2 KEY0
3 GND
remote connector (CN201)
Keypad and connector (CN202)
Speaker connector CN701
Pin number Signal name Description
1 RSPK+ RSPK+
2 RSPK- RSPK-
3 LSPK- LSPK-
4 LSPK+ LSPK+

3-3. Power Board
3-3-1 Function Description:
Supply power for Main board, Panel.
Service Manual
Model No.:
- 11 -
CON5
3
4
5
6
7
8
9
10
11
12
1
2
POWER ON/OFF
+5VSTB
+5V
GND
GND
+12V
+12V
BL ON
GND
+5V
GND
DIM

3-4. LCD Panel
- 12 -
Service Manual
Model No.:
MTC216TVM-C14H(CMO:V216B1-P13)

Service Manual
Model No.:
- 13 -
3-5 Interface Connections
Pin No. Symbol Description Note
1 NC No Connection (2)
2 NC No Connection (2)
3 NC No Connection (2)
4 GND Ground
5 RX0- Negative transmission data of pixel 0
6 RX0+ Positive transmission data of pixel 0
7 GND Ground
8 RX1- Negative transmission data of pixel 1
9 RX1+ Positive transmission data of pixel 1
10 GND Ground
11 RX2- Negative transmission data of pixel 2
12 RX2+ Positive transmission data of pixel 2
13 GND Ground
14 RXCLK- Negative of clock
15 RXCLK+ Positive of clock
16 GND Ground
17 RX3- Negative transmission data of pixel 3
18 RX3+ Positive transmission data of pixel 3
19 GND Ground
20 NC No Connection (2)
21 SELLVDS Select LVDS data format (3)
22 NC No Connection (2)
23 GND Ground
24 GND Ground
25 GND Ground
26 VCC Power supply: +5V
27 VCC Power supply: +5V
28 VCC Power supply: +5V
29 VCC Power supply: +5V
30 VCC Power supply: +5V
Note (1) Connector part no.: P-TWO 196108-30041 (1.0mm FFC) or compatible
Note (2) Reserved for CMO internal use, please leave it open
Note (3) Low: JEIDA data format. High/open: VESA data format.
Note (4) Logic level voltage definition: Low: 0V, High: 3.3V

4. Disassemble and assemble
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faces upward
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4-2Remove the Back Cover
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unit.
Service Manual
Model No.:
- 15 -
Remove the eight screw indicated on
4-1 Remove the Pedestal

4-4 Remove the Terminal Bracket
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4-5 Remove the power module
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4-6 Remove the Main board
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Service Manual
Model No.:
- 16 -
CN201,CN202,CN205,CN101 CN701,CN403,CN102

4-7 Remove the speaker
Take out the speaker
4-8 Remove the remote control
Remove the screw, take out the remote control
board
Service Manual
Model No.:
- 17 -

5. Installation Instructions
5-1 External Equipment Connections
Accessories
Remote Control User GUIDE Battery
Antenna Connection
Connect one end of a coaxial cable (not included) to the ANT IN jack on the back of
your TV/DVD combo, then connect the other end of the cable into the antenna or cable
TV wall outlet.
To improve picture quality from an antenna in a poor signal area, install a signal
DPSOL¿HU
If you need to split the antenna signal to connect two TVs, install a two-way splitter.
Service Manual
Model No.:
- 18 -

Service Manual
Model No.:
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AV EQUIPMENT
This TV provides two groups of A
V
, one group of
YPbPr for convenient connection to VCR,
DVD or other
video equipment. Please refer to the owner's manual of the equipment
to be connected as well.
You can
use the input terminals on TV set
rear as follows.
VIDEOEQUIPMENTwithYPbPr
GBR
HDMI
Toaudio
outputs
terminal
VIDE
OEQUIPM
ENT
RWY
output
Tovideo
YR
W
with
WY
RWY R
A
V2INA
VOUT
GBRR
W
R
W
HDMI1INPUTHDMI2INPUTL
RAV
Pr
Y
Pb
PC
AUDIO INPUTRFINPUT
AV2IN/AVOUT
It can be connected to the following appliances: VCR, multi disc player, DVD, camcorder, video game
or stereo system, etc.....
YPbPr can support these video fomats: 480i, 576i, 480p, 576p, 720p, 1080i, 1080p.
Red(audioR)
White(audio L)
Red(Pr or Cr)
R
W
R
Blue(Pb or Cb)
Green(Y)
B
G
Yellow(video)
Y
Note: 1.A
V and
YPbPr share one
audio channel.
2.When HDMI 1
port get DVI
signal, the "PC
Audio" channel
is changed to
receive the audio
for
HDMI1 port.
3.Sometimes it will
not support in
different device because
the device supplys
nonstandard signal.
4.When current source
is TV
, A
V OUT
signal is TV;
when current source
is A
V
, A
V OUT
signal is
AV; other sourceshave noAV OUT signal.

Service Manual
Model No.:
- 20 -
STEPS:
PC
Be sure both the TV and computer are Power off.
1.Connect VGA and audio cable
2.Connect power cord
3.Power on the TV, switch to PC mode
4.Power on the PC
This sequence is very important.
8
100-240V~ 50/60Hz
AC-INPUT HDMI1 INPUT HDMI2 INPUT
L
R
AV
Pr
Y
Pb
PC
AUDIO INPUT
RF INPUT
AV2IN/AV OUT
PRESET MODE (PC)
NOTE: PCV
.Freq.(Hz) not more than 60Hz.
1
2
3
800*600
1024*768
60
60
37.88
48.36
RESOLUTIONV
.Freq.(Hz) H.Freq.(KHz)
1360*768
(Only for 19", 22") 60 47.7
4
1280*768
(Only for 24") 60 47.3
PRESET MODE (HDMI)
1
2
3
800*600
1024*768
60
60
37.88
48.36
RESOLUTIONV
.Freq.(Hz) H.Freq.(KHz)
1360*76860 47.7
4
1280*76860 47.3
5
1920*1080
(Only for 24") 60 67.5
5
1920*108060 67.5