Changhong Electric LS09C User manual

LED COLOUR TV
MAINTENANCE MANUAL
MODEL: LS09CCHASSIS
Please read this manual carefully before maintenance.

2
CATALOG
Chapter1:Safety and notes............................................................................................3
Chapter2: TV specifications and ports functions.........................................................4
Chapter3: Software upgrade tooling,software upgrade instructions,software
initialization,parameter setting,software version and screen matching instructions......6
Chapter4:Repair process and examples of typical accident.......................................11
Chapter5: Factory model parameters setup instructions and precautions..................16
Chapter6:Instructions of simple factory debugging specification .............................19

3
Chapter1:Safety and notes
1-1 Installation notes
(1) Please don't beat or rub, scratch the surface of the LCD screen heavily, don’t touch it with
hand casually.
(2) When the screen is dirty, please clean it with absorbent cotton or cotton cloths lightly.
(3) Please clean it timely when water or other viscosity pollution fall, which may make the LCD
face or color change.
(4) Please don’t make the LCD screen shocked by a strong external force.
1-2 Attention points of operation and using
(1) Please unplug the power cable before moving LCD screen.
(2) Please don’t change the mainboard’s original setting, otherwise brightness, white balance etc.
may not meet the specification.
(3) Radiation of long time use at room temperature is larger than at low temperature.
(4) Please note that the long displaying image may remain at the top when shutdown the
machine .
(5) Please avoid the impact from mobile phone to protect your TV.
1-3 Storage notes
(1)When store for a long time, please keep the temperature between 0℃to 40℃,don’t expose the
TV to the sun, the humidity should be less than 85％RH.
(2)Please don’t put your TV under high humidity and high temperature circumstance ,e.g
temperature: 60℃,humidity:85%RH.
(3)Please don’t put your TV under low temperature circumstance ,e.g temperature lower than
25℃.
1-4 Dismantling notes
(1)As LCD screen is easy to be damaged, when dismantle, please attention to protect.
(2)Please attention the position of each screw when dismantle, in case to beat the wrong position
when install which may lead to crack or slide of the face frame.
(3) If you need to dismantle the power board or the mainboard, please attention the position and
direction of each line, especially the direction of the screen line, in case of causing accident
when install. Before dismantle ,we can take some photos of the line route for the comparison
of installing.
(4)After check and maintenance, please assure that there is no foreign body in the machine when
install.
1-5 High-voltage warning
The high-voltage of the LCD screen is generated by the power supply step-up board, without
attention to exposure to high voltage, one may meet a serious electric shock.

4
Chapter2:TV specifications and ports function
2-1 Basic specifications（The parameters are for reference only, the specifications should
accord to practicality of the batch orders）

5
2-2 Introduction of ports(practicality photos)
ATTENTION:
1. HDMI and YPbPr support to 1080P；
2.The recommendation resolving ratio of VGA is 1024X768；
3. Av output supports TV input /AV output，Av input /AV output;
4.The picture is for a reference only,the actual item is the standard.

6
Chapter3: Software upgrade tooling , software upgrade instructions ,
software initialization , parameter setting , software version and
screen matching instructions
3-1 Software upgrade tooling
there are two kinds of using upgrade tooling：
1.Use the combined interface(the parallel port) upgrade tooling :use the upgrade program: ISP_
Tool V4.0.5.exe（and higher versions）
2.Use USB interface upgrade tooling , use the upgrade program : versions higher than ISP Tool
V4.3
3. Use the USB upgrade
3-2 Software upgrade instructions
3-2-1 Tooling upgrade
1. Driver Installation: Upgrade tooling connected to the computer via USB, the first connection
will be prompted to find the hardware, follow the prompts to install the driver, Driver file from the
attachment "usb-updateTOOL-DRIVER" folder inner tube MSTAR name of the subfolder word
where you can, you are prompted three times, three times to be installed.
2. After installing the driver tooling, tooling and TV connected (switched on), open the upgrade
tool "ISP_Tool V4.3.9.4.exe" (Note: The following chart version of the tool used for the
interception chart, the upgrade is still using V4 .3.9.4 version), run the upgrade program
computer upgrade tooling LCD TV
Combined interface or USB
VGA

7
Cancel the selection in the red line frame of last chart , as following shows:
3.Select(connect)first ,if normal ,system will feedback the flash style of the machine chassis As
following

8
4.Select the toolbar on the "Read", then click on the bottom there's "Read", select the upgrade file,
such as "CH-P06U (VC)-V1.15-YD12.bin"
5. select "Auto", and check the options according to the following chart

9
6. Select the top of the "Connect", if connected, there will be "Device Type" prompt, select "OK"
and then click "RUN", After the upgrade is complete, the green "PASS" prompt will appear in the
progress bar below

10
3-2-2 USB Upgrade
1) The first method
Copy the file to root catalogue of USB, The filename has to be for "bin_6m181. bin".Turn
on the TV, Insert the USB flash , .Entre the menu to choose "Sotfware Update(USB)", And press
key "ENTER" of remote control ，Then follow the on-screen prompt to request and complete
your update.
2) The second method
Copy the file to root catalogue of USB, The filename has to be for "bin_6m181. bin" ,Insert
the USB flash , then turn on the AC switch, update will be completed automatically, during
updating, The indicator will gleam.
3-3 Software initialization
After finishing the software upgrading ,enter into the factory menu ,select INIT TV，clear
EEPROM.
5-4Software version
Enter into the factory menu ,select SW INFORMATION

11
Chapter4:Classical accident maintenance procedures and examples
4-1 Power Supply Trouble
4-2 Display Trouble（exceptional screen）

12
4-3 Display Trouble （white screen）
4-4 Display Trouble（black screen）

13
4-5 Audio Trouble（No sound)
4-6 Function Trouble（TV video）

14
4-7 Function Trouble（PC）
4-8 Function Trouble（SCART、HDMI、YPbPr、DVB/TV）

15
4-9 When you meet the following common problems, you might diagnose and
get the solutions without contacting with the technicians.
Symptoms Possible Reason Solutions
No picture, no sound, and no
indicator light on 1.The power cord is not plugged in 2.The power is off 1.Plug in the power cord 2.Turn the power on
abnormity Picture and sound
with
1.Contrast, sharpness, and color are
set improperly
2.Color system is improperly
3.Sound system is improperly
1.Adjust the numerical value of
Contrast, sharpness, and color
2.Set the Color system to the
country broadcasting standard
3.Set the Sound system to meet
the country’s broadcasting
standard
Picture is spotted or with snow Signal source is low-grade or the
signal cord is in a lower quality Use the qualified signal cord
Contrast, brightness, color and
volume are all in the minimum value
or TV is in mute mode.
Adjust the value of contrast,
brightness, color and volume
No picture, no sound and
indicator light is green The signal cable is not correctly
connected. Connect the signal cable correctly
Blue screen, AV or SVIDEO is
displayed
There is no signal input or the video
cable is not connected or incorrectly
connected
Connect the video cable
correctly
Picture is unclear or shaking or
with black horizontal strips (in
VGA mode)
VGA picture is not centered
VGA picture is not correctly adjusted.
Enter “SETUP” menu, select
“Auto Tracking” item to
perform automatic calibration
and adjust “Phase” to solve the
problem
No sound There is no audio signal input or audio cable is not connected correctly
Connect the audio cable
correctly
VGA picture display with
improper color The color temp is adjusted incorrectly by user Readjust the color temp, or select the original color setting
HDMI source, with snow pixel
of full screen The signal source is not normal Plug the HDMI cable again
The remote control does not
work Batteries are improperly installed or exhausted
1. Make sure the positive and
the negative polarities are
correct.
2.Check if there is a loose
contact between the batteries
and the springs
3.Replace the batteries

16
Chapter5: Factory mode parameter setting instructions and notes
5-1 Enter into the factory mode
Switch on TV set, and make it works normally:
1.Press 【MENU】key on the remote control
2.Press number keys “1”、“1”、“4”、“7” on remote control to enter password. Finish entering
the factory mode. If you want to quit the factory mode, Please. press【EIXT】key
Factory menu displays as bellow：
5-1-1ADC ADJUST (ONLY FOR YPBPR AND VGA)
1. AUTO ADC ：AUTO ADJUST FOR Ypbpr CHANNEL
2．Restore Factory Def：RESET THE CHANGES
5-1-2．GENERAL SETING (Usually used)
W/B ADJUST(Usually used)

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1.W/B ADJUST(Usually used): Going to the white balance adjusting page.
2.PICTURE MODE: To change Parameters for different picture mode like mild worm…
3.Sound Mode :To change Parameters for different sound mode like standard music …
4.Volume curve :To change the volume page.note:the volume curve mode should not set here
WHITE PATTERN Press to generate 6 kinds of output pattern like white red…
5.Backlight :Press to change the voltage of PINADJ to change the brightness of the panel.
6.LVDS MAP:Press to change the Lvds map (Caution: Press this may close the output
signal ,you just keep press left or right or ok, and never press any key else especially key up and
down)
7.POWER MAP:
Set it to: 0 : Means you must press the power key to run the TV when it get power. ON: Auto
power on when get power Last: Go to the last state when it lost power supply.
Logo:
It will not show logo when open up if you set it to close.
5-1-3.DEBUG

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1.PQ NONLINEAR (Usually used)
MODE: Channel
PICTURE MDOE: Mostly we set it to standard
Brightness Curvel: To change the brightness page
Contrast Curve: To change the contrast page
Saturation Curve: To change the saturation page
Hue Curve: To change the hue page
Sharpness Curve: To change the sharpness page
Volume Curve: To change the volume page
All the CURVE are almost the same, so I only show Brightness curve as sample: Usually
we only change the OSD_50 item , it is correspond to the brightness of user OSD with the value
50. OSD_100 is correspond to the value 100 of user OSD who is the max brightness.
5-1-4. SW INFORMATION :Press to show the detail of the software like the time and the
checksum.
5-1-5. INIT TV: Initialize the TV totally, reset the EEPROM
5-1-6. INIT FAC CHANEL :Initialize the factory channel
5-1-7. Burn Mode: Go to burn mode (Power to exit)
5-2 Setting method of factory menu
1. Select the setting item
Operators can choose setting item with【P+】and【P-】key, font with background display means
the item has been chosen. Press【V+】key to enter sub directory. Use 【P+】and 【P-】keys on
remote control to select up and down, then use【V+】and【V-】keys to set.
2.Most of the menu functions are open under factory mode, if need , item checking and effect test
can be done by using menu .
3. TV signal switching can be done by directly pressing the number keys in factory mode .Press
【MENU】to back to the parental catalog ,press【EXIT】to quit factory mode.

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Chapter6:Instructions of simple factory debugging specification
6-1 Clear EEPROM ,and set the parameters after upgrading according to the
upgrade instructions.
6-2 Check each channel/source to see if the image and sound are normal.

1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
D D
C C
B B
A A
C7
NC/0.1uF-0402-Y5V-+80%-20%-16V
12
E1
100uF-16V-±20%-6*7
－ 105 ℃
+5V_STB
C8
NC/0.1uF-0402-Y5V-+80%-20%-16V
ADJ
BL ON
+5V_STB
Q6
PMBT3904
5V_SW
R20
33ohm-0402-±5%-1/16W
R26
510ohm-0402-±5%-1/16W
R31
10Kohm-0402-±5%-1/16W
Q7
PMBT3904
R29
1Kohm-0402-±5%-1/16W
GND
C32
1uF-0603-Y5V-+80%-20%-10V
GND
PVCC
R22
NC/10Kohm-0402-±5%-1/16W
VCC-Panel
C35
0.1uF-0402-Y5V-+80%-20%-16V
+
E7
NC/100uF-25V-±20%-6*7
－ 105 ℃
Q9
PMBT3904
R35
4K7ohm-0402-±5%-1/16W
R36
100Kohm-0402-±5%-1/16W
C20
0.1uF-0402-Y5V-+80%-20%-16V
BL_ON
R38
3K3ohm-0402-±5%-1/16W
Q8
A03407
C31
0.1uF-0402-Y5V-+80%-20%-16V
R21
510ohm-0402-±5%-1/16W
C22
0.1uF-0402-Y5V-+80%-20%-16V
R17
10Kohm-0402-±5%-1/16W
R19
510ohm-0402-±5%-1/16W
5V_SW
L3
MGGB1005M301HT-LF
L4
MGGB1005M301HT-LF
+3.3V_STB
C1
0.1uF-0402-Y5V-+80%-20%-16V
C3 0.1uF-0402-Y5V-+80%-20%-16V
+5V_STB
P_panel
M1
MARK M2 MARK M3 MARK M4 MARK
GND
H1
Location hole
H2
Location hole
H3
Location hole
H4
Location hole
GND
5V_SW
+1.2V_VDDC
GND
+
E6
470uF-16V-±20%-8*12
－ 105 ℃
BS 1
IN
2SW 3
GND
4
FB 5
COMP
6
EN
7
NC 8
U4
RT8284NGSP
C33
NC/100pF-0402-NPO-±5%-50V
C30
0.01uF-0402-X7R-±10%-50V R32
2K2ohm-0402-±5%-1/16W
C19 0.01uF-0402-X7R-±10%-50V
R24
5K1ohm-0402-±1%-1/16W
R27
12Kohm-0402-±1%-1/16W
C18 0.01uF-0402-X7R-±10%-50V
C23
10uF-0805-X5R-±10%-6.3V
R28
NC/10Kohm-0402-±5%-1/16W
C29
0.01uF-0402-X7R-±10%-50V
C21
0.1uF-0402-Y5V-+80%-20%-16V
C26
0.1uF-0402-Y5V-+80%-20%-16V
VI
3VO 2
ADJ
1
VO 4
U3
BM1117-ADJ(SOT-223)
C15
0.1uF-0402-Y5V-+80%-20%-16V
R8
91ohm-0402-±1%-1/16W
R11 100ohm-0402-±1%-1/16W
C17
NC/0.1uF-0402-Y5V-+80%-20%-16V
C13
0.1uF-0402-Y5V-+80%-20%-16V
5V_SW
+
E4
470uF-16V-±20%-8*12
－ 105 ℃
L2
DR2W4*5.5-10uH
12
E2 100uF-16V-±20%-6*7
－ 105 ℃
+3.3V
C10
0.1uF-0402-Y5V-+80%-20%-16V
C12 0.1uF-0402-Y5V-+80%-20%-16V
5V_SW
VI
3VO 2
ADJ
1
VO 4
U1
BM1117-3.3(SOT-223)
BL_ADJ
R25
10Kohm-0402-±5%-1/16W
Vref=1.25V
+3.3V
5V_SW
Power_ ON
R23
NC/10Kohm-0402-±5%-1/16W
R37
NC/4K7ohm-0402-±5%-1/16W
R30
NC/10Kohm-0402-±5%-1/16W
BS
AVDD_DDR_2.5V_
P1
22.5*22*6(
缺口向上）
C16
1uF-0603-Y5V-+80%-20%-10V
C9
NC/10uF-0805-X5R-±10%-6.3V
1
2
3
+
_
CN2
DC-001-
内径为 2.0mm-G
12V
1
2
3
4
5
6
7
8
9
10
CN1
NC/10PIN-2.0-D-H-G
GND
GND
12V
12V
12V
12V
GND
GND
GND
GND
+5V
1
2
3
4
5
6
CN5
NC/6PIN-2.0-D-H-G
PW_ON
+
E3
470uF-25V-±20%-10*13
－ 105 ℃
C6
0.1uF-0402-Y5V-+80%-20%-16V
F1
3F.3150212021ZLQGMV
+12V
C5
0.1uF-0402-Y5V-+80%-20%-16V
12V
+
E9
470uF-16V-±20%-8*12
－ 105 ℃
L13
TC5026U-470K-BK/NA
BS 1
IN
2SW 3
GND
4
FB 5
COMP
6
EN
7
NC 8
U7
RT8269GSP
C196
100pF-0402-NPO-±5%-50V
C194 0.01uF-0402-X7R-±10%-50V
R188 10Kohm-0402-±5%-1/16W
C122
0.01uF-0402-X7R-±10%-50V
R184
180Kohm-0402-±1%-1/16W
R186
39Kohm-0402-±1%-1/16W
C193
0.1uF-0402-Y5V-+80%-20%-16V
C121 0.01uF-0402-X7R-±10%-50V
+12V
C123
0.1uF-0402-Y5V-+80%-20%-16V
D34
SK34A-SMA
+5VR5
10Kohm-0402-±5%-1/16W
R187
4K7ohm-0402-±5%-1/16W
GND
GND
C125
0.1uF-0402-Y5V-+80%-20%-16V
Q2
PMBT3904
R7
4K7ohm-0402-±5%-1/16W
R183
100Kohm-0402-±5%-1/16W
R4
NC/0ohm-1206-±5%-1/4W
R185
47Kohm-0402-±5%-1/16W Q1
WPM2341-3/TR
+5V
5V_SW
Power_ ON
C120
NC/0.47uF-0603-Y5V-+80%-20%-16V
C126
NC/0.47uF-0603-Y5V-+80%-20%-50V
GND
GND
GND
C204
0.1uF-0402-Y5V-+80%-20%-16V
Q23
PMBT3904
R190
4K7ohm-0402-±5%-1/16W
R191
100Kohm-0402-±5%-1/16W
R189
NC/0ohm-1206-±5%-1/4W
R192
47Kohm-0402-±5%-1/16W Q21
A03407
+12V
Power_ ON
+12VOFF
+5V_STB
R9
NC/510ohm-0402-±5%-1/16W
Q5
NC/D-MMBT3904-7-F
R15
NC/10Kohm-0402-±5%-1/16W
R10
NC/4K7ohm-0402-±5%-1/16W
Q3
NC/PMBT3906
R12
NC/10Kohm-0402-±5%-1/16W
Power_ ON
PW_ON
+5V_STB
+5V
R3
0ohm-1206-±5%-1/4W
+5V
+5V_STB
R1
0ohm-1206-±5%-1/4W
R2
NC/0ohm-1206-±5%-1/4W
+12V
+E5
NC/100uF-25V-±20%-6*7
－ 105 ℃
PW_ON
ADJ
BL ON
VI
3VO 2
ADJ
1
VO 4
U2
BM1084-3.3(TO263-2)//NC/BM1117-3.3(SOT-223)
+5V
PVCC
+12V
PVCC
+
E23
100uF-16V-±20%-6*7
－ 105 ℃
+
E22 NC/100uF-16V-±20%-6*7
－ 105 ℃
L39
0ohm-0603-±5%-1/10W
+3V3
R142
NC/10Kohm-0402-±5%-1/16W +5V_STB
H5
Location hole
5V 1
PVCC 2
3.3V 3
CN23
3PIN-2.54-D-H-M
+3V3
12V 1
PVCC 2
CN4
NC/2PIN-2.54-D-H-M
ADJ
BL ON
1
2
3
4
5
6
CN3
6PIN-2.0-D-H-
红色 -G
12V