Changhong Electric LED32HTC2000E User manual

LED COLOUR TV
MAINTENANCE MANUAL
CHASIS: HLS49J（MSD308B）
MODEL: LED32HTC2000E
(JUC7.820.00084054)
Please read this manual carefully before maintenance

Chapter1 Safety and notes..........................................................................................................................................................3
1-1 Installation notes..........................................................................................................................................................3
1-2 Attention points of operation and using .......................................................................................................................3
1-3 Storage notes................................................................................................................................................................3
1-4 Dismantling notes ........................................................................................................................................................3
1-5 High-voltage warning ..................................................................................................................................................4
Chapter2 whole machine standard and terminal functions ........................................................................................................4
2-1 Basic standard..............................................................................................................................................................4
2-2 Introduction of terminals(practicality photos) .............................................................................................................5
Chapter3 Main chip functions and the introductions of power supply ......................................................................................6
3-1 Main IC and functions of HLS49J...............................................................................................................................6
3-2 Pin function description of HLS49J chip.....................................................................................................................7
3-2-1 MSD308B recommended operating power conditons...................................................................................7
3-2-2 M25P16 16Mbit(2M x 8bit) brief introduction: ............................................................................................7
3-2-3 SY8009B DC-DC brief introduction:.........................................................................................................7
3.3 Brief introduction of power supply ..............................................................................................................................8
Chapter4 The chassis frame diagram, mainboard power supply systems, mainboard interface definition................................8
4-1 Power supply system ...................................................................................................................................................9
4-1-1 The composition and distribution of the TV power supply ..............................................................................9
4-1-2 Pin voltage of the voltage adjustor on the mainboard ....................................................................................10
4-1-3 Interface definition .........................................................................................................................................11
Chapter5 Software upgrade instructions ..................................................................................................................................11
5-1 Software upgrade tooling---there are two kinds of using upgrade tooling ................................................................11
5-2 Software upgrade introduction...................................................................................................................................12
Chapter6: Classical accident maintenance procedures and examples......................................................................................16
6-1 The thinking of don’t boot .........................................................................................................................................16
6-2 Common problems for your reference.......................................................................................................................16
Chapter7 High voltage and high current wearing parts list......................................................................................................17
Chapter8 Factory mode parameter setting instructions and notes............................................................................................17
8-1 Enter into the factory mode .......................................................................................................................................17
8-2 Setting method of factory menu.................................................................................................................................19
Chapter9 Instructions of HLS49J module Circuit Schematic Diagram ...................................................................................20
Appendix ：Circuit Schematic Diagram ..............................................................................................................................20

Chapter1 Safety and notes
1-1 Installation notes
(1) Please don't beat or rub, scratch the surface of the LED screen heavily, don’t touch it with your hand
casually.
(2) When the screen is dirty, please clean it with absorbent cotton or cotton cloth slightly.
(3) Please clean it timely when water or other viscosity pollution fall, which may make the LED face or
color change.
(4) Please don’t make the LED screen shaked by strong external force.
1-2 Attention points of operation and using
(1) Please unplug the power cable before moving the LED screen.
(2) Please don’t change the original setting of the mainboard’s, if not, the brightness and white balance
etc. may not meet the specification.
(3) The radiation of a long time using in the room temperature is larger than the 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 the mobile phone to protect your TV.
1-3 Storage notes
(1)When stored for a long time, please keep the temperature between 0℃to 40℃,don’t expose the TV to
the strong sunlight, the humidity should be less than 85％RH.
(2)Please don’t put your TV under high humidity and high temperature environment, for example, the
temperature: 60℃, and the humidity: 85%RH.
(3)Please don’t put your TV under low temperature environment, for example, the temperature lower
than -25℃.
1-4 Dismantling notes
(1)As LED screen is easy to be damaged, while dismantle, please attention to protect.
(2)Please attention the position of each screw when dismantle, in case to beat the wrong position when
install, if not, it 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 LED screen is generated by the power supply board, without attention to
exposure to the high voltage, one may meet a serious electricity shock.
Chapter2 whole machine standard and terminal functions
2-1 Basic standard
Item Standard
Model Name M320X13-E1-A(G3)
visual area 32 inches（opposite angles）
aspect ratio 16:9
resolving ratio 1,366x768 Pixel
visual area H x V 697.685(H) x 392.256(V)
display colour 8 bit, 16.7M million
Contrast Ratio 3000：1
brightness 280cd/m²
visual angle 178°(horizontal)/178° (vertical)
react time 6.5ms
backlight life 30000 hours
the parameters are for
reference only,the specific
should accord to the standard
of the screen practicality of
the batch orders
LED Panel
color temperature cold/hot
sound system B/G、D/K、I、L
TV function color system PAL / SECAM
AV AV x 1 Audio L/R x 1
aberration signal YPbPr x 1 support to1080P ，Audio L/R x 1,
HDMI HDMI x3 support to1080P
USB USB x1 support media player
plug and use
input frequency H: 31.5K -50KHz
V: 60Hz
recommend 1280x768(60HZ)
Audio and video
signal input
PC input
Phone x 1 PC audio input
Video output Output CVBS signal Output TV and AV signal ,Audio L/R x
1
Audio output Audio output L / R 8W inner speakers for each channel

power supply AC100V~240V, 50/60Hz
Power power achievement <150W
requirement for environment
operation temperature
storage temperature
operation humidity
+ 0° ~ + 40° ，
- 20 ° ~ + 60°
10% ~ 85%
appearance size W x H x D
net weight no accessory Kg
2-2 Introduction of terminals(practicality photos)
ATTENTION:
1.HDMI and YPbPr support to 1080P；
2.The recommendation resolving ratio of PC is 1280X768；
PCMCIA Card Slot
USB input
HDMI3 input
Coaxial output
RF input
PC input PC audio input
AV out
HDMI1 input HDMI2 input
Power input
Keypad IR input
Audio output
YPBPR input
Lvds output
AV input

Chapter3 Main chip functions and the introductions of power supply
3-1 Main IC and functions of HLS49J
N
o. Item no. Model(EXAMPLE) Main function
1 U001 AMS1117/A-3.3 5V to 3.3V LDO
2 U200 MSD308B Video decoder, image processor, A/D and D/A conversion
3 U201 H5TQ1G63DFR-PBC DDR3
4 U205 EN25Q64-104HIP 64Mbit(8M x8bit), low voltage, Serial Flash memory
5 U804 AMS1117/A-3.3 5V to 3.3V LDO
6 U805
AMS1117/A-3.3 5V to 3.3V LDO
7 U809 SY8009B 5V to 1.15V DC-DC
8 U808
AMS1117/A-1.5 5V to 1.5V LDO
9 U700 RT9108NBGCP Power amplifier
10 A002 DT21WN-2A-E Silicon high frequency head integrated chips
11 U806 MP1471 12V to 5V DC-DC
12 UT001 MSB101A DVBT2 DEMO
13 UT002 AMS1117/A-3.3 5V to 3.3V LDO
14 UT003 AMS1117-ADJ 5V to 1.2V LDO
15 UT004
EN25F40-100GCP 4M-bit (512K-byte)
U200：MSD309B
U201：DDR3
U808：LDO-1.5V
U804：LDO-3.3V
U805：LDO-3.3V
UT002：LDO-3.3V
U205:Flash Memory
U809: DC-DC-1.15V
A002: TDA18273HN
或者 DT21WN-2A-E
U700：RT9108NBGCP
U806:MP1471
U001：LDO-3.3V
UT003：LDO-1.2V
UT001：MSB101A
UT004：Flash Memory

3-2 Pin function description of HLS49J chip
3-2-1 MSD308B recommended operating power conditons
(The Main Chip cancel 1.8V Supply Voltages because of DDR3 supplied by 1.5V )
Parameter Symbol Min Typ Max Unit
3.3STB Supply Voltages VvDD_33 3.14 3.3 3.46 V
3.3V Supply Voltages VvDD_33 3.14 3.3 3.46 V
1.5V Supply Voltages VvDD_15 1.43 1.5 1.57 V
1.15V Supply Voltages VvDD_1v15 1.09 1.15 1.21 V
2.5V Supply Voltages VvDD_25 2.38 2.5 2.62 V
1.2V Supply Voltages VvDD_12 1.14 1.2 1.26 V
JunctionTemperature Tj 125 ℃
Case Temperature TC100 ℃
3-2-2 EN25Q64-104HIP64Mbit(8M x 8bit) brief introduction:
Pin NO. Pin Name I/O Function
1 CS# I Chip Select
2 SO O Serial Data Output
3 WP# I White Protect
4 Vss Ground
5 SI I Serial Data Input
6 SCK I Serial Clock
7 HOLD# I Power Supply
8 VDD Power Supply
3-2-3 SY8009B DC-DC brief introduction:
Pin introduction:
Pin SYMBOL Function description
1 EN Enable Input.
2 GND Ground
3 OUT Power Switching Output.
4 IN DC Power Input.
5
N
C
N
ot Connect
6 FB Feedback Input.

3.3 Brief introduction of power supply
Chapter4 The chassis frame diagram, mainboard power supply systems,
mainboard interface definition
This chapter mainly introduce the chassis frame diagram, power supply system, interface definition
Use for mainbord
power supply.
PS-ON
DIM
BL-ON
GND
GND
GND
GND
12V
12V
12V
Use for LED backlight
power supply.
AC input
AC100-240V
50/60HZ

2.5V
4-1 Power supply system
Power board has two kinds of output voltage: +12V
4-1-1 The composition and distribution of the TV power supply
U200 MST308BT
CON801
Q81012VU
LVDS
POWER
U700 TPA3110D
L713
U001 LDO-3.3V
A002
SI-TUNER
DT21WN-2A-E
U804 LDO-3.3V
U205 FLASH Memory
5VA
U805 LDO-3.3V
U808 LDO-1.5V
U809 DC-DC 1.15V L805A
U201 DDR3
D802
U806
5VU
UT002 LDO-3.3V
UT003 LDO-1.2V UT001
MSB101A
UT006
FLASH Memory
Q812

4-1-2 Pin voltage of the voltage adjustor on the mainboard
item No. Q810 U808 U001,U805,U804 D802 U809 UT003
output voltage 12V 1.5V 3.3V 2.5V 1.15V 1.2V
3.3V
3.3V
3.3V
1.15V
1.5V
12V
PIN1
,
2
,
3=12V
1.2V

4-1-3 Interface definition
Chapter5 Software upgrade instructions
5-1 Software upgrade tooling---there are two kinds of using upgrade tooling
1.Use the combined interface(the parallel port) upgrade tooling: use the upgrade programme: TV
Utility_4.4.
2.Use interface upgrade tooling, use the upgrade programme: versions higher than TV Utility_4.4
OUTL+
OUTL-
OUTR+
OUTR-
5VSTANDY
GND
IR-IN
LED-R
LED-G
NC
KEY1
KEY0
GND
PS-ON PB-ADJ PB-ON/OFF GND GND GND GND +12V +12V +12V

5-2 Software upgrade introduction
1. Set up ISPTooling to upgrade the mboot software
2.Open the ISP tooling and select “Connect”
Computer upgrade
tooling
LED TV
Combine interface or USB
VGA
LAN

3.Pls select “OK” once you connect the tooling successfully
4.Select “Read”

5. Choose right mboot document and open the file.
6. Select “Auto”

7. Select “Run”.
8. The mboot is updating.

9. Please turn on the TV again once the mboot is updated successfully.
Chapter6: Classical accident maintenance procedures and examples
6-1 The thinking of don’t boot
The power is not connected.
6-2 Common problems for your reference
To speed you to dignose and solve problems, the following commom problems are offered for your
reference.
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 numberical 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
No picture, no sound and indicator
light is green
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

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
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
Chapter7 High voltage and high current wearing parts list
The introduction of maintenance parts are for reference only, modification of parameters will not be
informed any more. For accurate data and related specifications, please consult the newest data of our
company.
Number Name Part number Proportion of easy damage
（‰）
1 Mainboard part JUC6.690.00084057 1
2 Remote receiving board part JUG6.695.625 0.5
3 Keyboard part JUG6.694.672 0.5
4 Inner power module MP066 5
5 LED screen M320X13-E1-A(G3) 0.1
6 Dynamic speaker YDT312-B1A-10W-8Ω2
Chapter8 Factory mode parameter setting instructions and notes
8-1 Enter into the factory mode
Switch on TV set, and make it works normally:
Press 【SOURCE】key on the remote control
Press number keys “3”、“1”、“3”、“8” on remote control to enter password. Finish entering the factory
mode. If you want to quit the factory mode, Please. press【EXIT】key to exit source.
Factory menu displays as bellow⑴：

Contents of first page：
Setting item Setting content Setting method Remark
ADC Adjust Automatic calibration function 【﹥】、【﹤】key Output in Ypbpr and VGA
Picture Mode Set audio value 【﹥】、【﹤】key
W/B Adjust Set White balance 【﹥】、【﹤】key Set colour temperature
SSC Setting LVDS & DDR frequency extend 【﹥】、【﹤】key
System setting Set system content Derition key
VIF Setting Control VIF singal 【﹥】、【﹤】key
QMAP Adjust Set PQ value
N
one
PEQ OFF OFF
SW Information Set color temp Derition key
Nonlinear Set frep of factory signal Derition key
Software Update(USB) Use USB to Update software Derition key
(2) Use the key 【▲】/【▼】on remote control to select items that need to adjust,，use the key 【﹥】
/【﹤】to adjust them.
Contents of sub pages：
ADC Adjust W/B Adjust
Setting item Default value Setting item Default value
Mode PC-RGB/YPbPr(SD)
/YpbPr(HD)/Scart Mode DTV/ATV/AV1/Component1
/PC-RGB/HDMI1/2/3
R-Gain 4096 Temperature Medium
G-Gain 4096 R-Gain 126
B-Gain 4096 G-Gain 128
R-Offset 0 B-Gain 130
G-Offset 0 R-Offset
1038
B-Offset 0 G-Offset
1024
Auto ADC Fail B-Offset 1035
System Setting
Setting item Setting content Remark
2Hour Off Off Auto shut down TV after 2Hours
WDT On Watch dog timer
WHITE PATTERN Off Color of background
Initial E²PROM initialization Only done in first setting station
PVR-RecordAll Off Personal video record switch
Power Mode Direct Boot way
Aging Mode Off Advoid ageing
Hotel Mode On Hotel Mode switch
PVR-RecordAll Off Personal video record switch
Backlight 10
Backlight home 10
Nonlinear
Setting item Setting Remark

value
Inout Source DTV/ATV/AV1/Component1/
PC-RGB/HDMI1/2/3/USB Inout channel
Volume Set volume nonlinear Different from UI setting volume and actual volume
Brightness Set brightness nonlinear Different from UI setting brightness and actual value
Contrast Set contrast nonlinear Different from UI setting contrast and actual value
Color Set color nonlinear Different from UI setting color and actual value
Sharpness Set sharpness nonlinear Different from UI setting sharpness and actual value
Tint Set tint nonlinear Different from UI setting tint and actual value
Picture Mode
Picture Mode standard Picture Mode Soft
Brightness 50 Brightness 50
Contrast 50 Contrast 25
Color 50 Color 35
Sharpness 50 Sharpness 40
Tint 50 Tint 50
Backlight 100 Backlight 100
Picture Mode Vivid Picture Mode User
Brightness 50 Brightness 50
Contrast 75 Contrast 70
Color 65 Color 80
Sharpness 60 Sharpness 50
Tint 50 Tint 50
Backlight 100 Backlight 100
Picture Mode Home
Brightness 50
Contrast 65
Color 50
Sharpness 50
Tint 50
Backlight 70
Notes：
Set INITIAL will clear the memory data, So do not set it unless it is needed; other setting items do not
need setting.
8-2 Setting method of factory menu
Choose setting item⑴
Operators can choose setting item orderly with【P+】and【P-】key, font having background display
represents the item has been chosen. Press【V+】key to enter sub directory. Use 【P+】and 【P-】keys
on remote control to make up or down option, and use【V+】and【V-】keys to set.
(2)All the menu functions are opened in factory mode, item checking and effect testing can be done by

using menu if it is needed.
(3)Switching TV signal in factory mode can be done by directly pressing the number key. Press
【MENU】key to back to the parent of working directory, press【EXIT】key to quit factory mode.
Chapter9 Instructions of HLS49J module Circuit Schematic Diagram
9-1 Clear EEPROM,and set the parameters after upgrading according to the upgrade instructions.
9-2 Check each channel/source to see if the image and sound are normal.
Appendix ：Circuit Schematic Diagram