DEXP HLS80JS User manual

LED COLOUR TV
MAINTENANCE MANUAL
MODEL: HLS80JS CHASSIS（MSD3663）
PCB VERSION：JUC7.820.00213099-2
Please read this manual carefully before maintenance

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CATALOG
Chapter1 Safety and notes ......................................................................................................................................................... 1
1-1 Installation notes ......................................................................................................................................................... 1
1-2 Attention points of operation and using ...................................................................................................................... 1
1-3 Storage notes ............................................................................................................................................................... 1
1-4 Dismantling notes ........................................................................................................................................................ 1
1-5 High-voltage warning .................................................................................................................................................. 2
Chapter2 whole machine standard and terminal functions ........................................................................................................ 2
2-1 Basic standard ............................................................................................................................................................. 2
2-2 Introduction of terminals(practicality photos) ............................................................................................................. 3
Chapter3 Main chip functions and the introductions of power supply ...................................................................................... 4
3-1 Main IC and functions of HLS80JS ............................................................................................................................ 4
3-2 Pin function description of HLS80JS chip .................................................................................................................. 5
3-2-1MSD3663 recommended operating power conditons ................................................................................ 5
3-2-2 GD25Q64CSIG brief introduction: .................................................................................................................. 5
Chapter4 The chassis frame diagram, mainboard power supply systems, mainboard interface definition ............................... 8
4-1 Power supply system ................................................................................................................................................... 8
4-1-1 MSD3663 Power Block Diagram ............................................................................................................................ 8
4-1-2 Pin voltage of the voltage adjustor on the mainboard .............................................................................................. 8
Chapter5 Software upgrade instructions .................................................................................................................................. 10
5-1 UART Upgrade ......................................................................................................................................................... 10
Chapter6: Classical accident maintenance procedures and examples ..................................................................................... 14
6-1 The thinking of don’t boot ......................................................................................................................................... 14
6-2 Common problems for your reference ...................................................................................................................... 14
Chapter7 Factory mode parameter setting instructions and notes ........................................................................................... 15
7-1 Enter into the factory mode ....................................................................................................................................... 15
7-2 Setting method of factory menu ................................................................................................................................ 41

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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

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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
ATV function sound system B/G、D/K、I、M
color system PAL / SECAM / NTSC
DTV function
DVB-T/T2 COFDM
DVB-C 16QAM,32QAM,64QAM,128QAM, 256QAM
DVB-S2 QPSK,8PSK
Video System MPEG2 MP@ML, MPEG-2MP@MLh, H264, HEVC
Sound System MPEG-1Layer 1/2, DD, DD+, AAC, HE-AAC
Audio and video
signal input
AV AV x 1 Audio L/R x 1
HDMI HDMI x2 support to1080P
USB USB x1 support media player
PC input
plug and use
input frequency H: 31.5K -50KHz
V: 60Hz
recommend 1280x768(60HZ)
Audio output Audio output L / R 8W inner speakers for each channel
Support Dolby Pro Logic
SPDIF Optical Fiber Support Audio output
Power power supply AC100V~240V, 50/60Hz
requirement for environment
power achievement <50W
operation temperature
storage temperature
operation humidity
+ 0° ~ + 40° ，
- 20 ° ~ + 60°
10% ~ 85%
appearance size W x H x D
net weight no accessory Kg

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2-2 Introduction of terminals(practicality photos)
RF input
HDMI2 input
Audio output
LVDS output
USB input
CI input
AV i n
p
ut
Satellite input
SPDIF output
HDMI1 input
POWER KEY
AC input
Backlight output
IR

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Chapter3 Main chip functions and the introductions of power supply
3-1 Main IC and functions of HLS80JS
UM2:Flash Memory
UM1: MSD3663
UTO1
UE2:DC-DC UE4:LDO
USO1
UE3:LDO
UE1:DC-DC
UZ1:LNB
UA1: Amplifier

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N
o. Item no. Model Main function
1 UTO1 R842 Tuner input IF signal
Support PAL\NTSC\SECAM\DVB-T\DVB-T2\DVB-C
2 USO1 RDA5815M Tuner input IF signal
Support DVB-S/DVB-S2
3 UM1 MSD3663LSA-005N Video decoder, image processor, A/D and D/A conversion
4 UA1 OB6228UP
15W Stereo (BTL) Analog Input Audio Amplifier with
Power Limiter and DC Detect
5 UM2 GD25Q64CSIG 64 Mbit(8M x8bit), low voltage, Serial Flash memory
6 UE1 MP1657GTF-Z 12VS to 5VS DC-DC
7 UE2 MP1657GTF-Z 12VS to 1.1V DC-DC/For COER
8 UE3 LC1117CLTR15 5VA to 1.5V_DDR LDO/FOR DDR3
9 UE4 LC1118CS8TRAD33 5VS to 3.3VS LDO/5VA to 3.3V_T LDO
10 UZ1 RT5047BGSP LNB power
3-2 Pin function description of HLS80JS chip
3-2-1 MSD3663 recommended operating power conditons
3-2-2 GD25Q64CSIG brief introduction:
3-2-3 MP1657GTF-Z brief introduction:

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3-2-4 LC1117CLTR15 brief introduction:
3-2-5 RT5047GSP brief introduction:
3-2-6 LC1118CS8TRAD33 brief introduction:

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3-2-7 OB6228UP brief introduction:

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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
4-1 Power supply system
Power board has two kinds of output voltage: +12V
4-1-1 MSD3663 Power Block Diagram
4-1-2 Pin voltage of the voltage adjustor on the mainboard
item No. UE1 UE2 UE3 UE4 QE1 QL1 CONP2 CONP3
output voltage 5VS 1.1V 1.5V 3.3V 5VA VCC-panel 12VS LED

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3.3V
12VS
1.5V
R+
R-
L-
L
+
LED
5VS
VCC-pane
1.1V
5VA

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Chapter5 Software upgrade instructions
5-1 UART Upgrade
UART upgrade is very slow,about 10 minutes.if the main board is not dead,please do not use UART
upgrade.
URAT upgrade software tool is MSTV_Tool.
1.tools prepare:
A).USB cable
B).URAT tool
C).4-Pin Reverse Wire
D).VGA upgrade tool

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2.UART upgrade
A).Copy the bin file upgrading to usb key root folder and then put USB key to main board USB terminal;
B).MSTV_Tool ->COM port ->COM port ->COM4
C).power on the TV set,you will message in the blue window;

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D).view -> direct command mode -> keypad emulator ->click “67”key
E).When upgrade is finish the TV will auto power on.

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5.2 USB Upgrade
(1)Power on TV set ,Copy the bin file upgrading to usb key root folder and then put USB key to main board USB terminal.
(2)Press remote control key”MENU”,then choose option find software upgrade (USB),then press “ENTER”.
(3)Press remote control “ENTER”,it will ask you “are you sure?”choose yes and System auto loads the upgrade bin and
start upgrading,processing bar will be shown .During the upgrading the OSD will show like bellow;When upgrade is finish
the TV will auto power on.

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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
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

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Chapter7 Factory mode parameter setting instructions and notes
7-1 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.
⑴Factory menu displays as bellow：
The first menu value The second items value The third items value
ADC ADJUST MODE RGB/Ypbpr(SD)/Ypbpr(HD)/S
CART
ADC Tune Fail
R-GAIN 5159
G-GAIN 5192
B-GAIN 5206
R-OFFSET 0
G-OFFSET 0
B-OFFSET 0
Ypbpr Phase 0
Picture mode Source VGA/HDMI1/HDMI2/HDMI3/
SCART/DTV/ATV/AV/YPBPR
1
Picture mode Home/vivid/standard/mild/user
Brightness 50
Contrast 100
Color 60
Sharpness 60
Tint 50
Copy all
White balance Source VGA/HDMI1/HDMI2/HDMI3/

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SCART/DTV/ATV/AV/YPBPR
1
TEMPERATURE Medium/warm/user/cool/
R-GAIN 128
G-GAIN 118
B-GAIN 127
R-OFFSET 1024
G-OFFSET 1024
B-OFFSET 1025
Copy all
SSC MIU enable 1
MIU
modulation(Khz)
25
MIU
percentage(%)
10
LVDS enable 1
LVDS
modulation(Khz)
35.0Khz
LVDS
percentage(%)
2.00%
Panel swing 250
SPECIAL SET 2HOUR OFF Off/on
WDT Off/on
WHITE
PATTERN
Off/on
GE/GOP
PATTERN
BMAP PATTERN
Restore factory

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default
PVR RECORD
ALL
Off/on
Power Off/on/last
Mirror enable On/off
Aging mode Off/on
Hotel mode On/off
VIF1 VIF1 AFEC_D4 0
AFEC_D5[2] 0
AFEC_D8[3:0] 0
AFEC_D9[0] 0
AFEC_A0 10
AFEC_A1 20
AFEC_66[7:6] 0
AFEC_6E[7:4] 8
AFEC_6E[3:0] 8
VIF_TOP 5
VIF_VGAMAXIMUM 7000
VIF_GAIN_DISTRIBUTTO
N
6A00
AFEC_CB 0
China_DESCRAMNLER_B
OX
32
VIF2 VIF_CR_KP1 3
VIF_CR_KI1 3
VIF_CR_KP2 6
VIF_CR_KI2 5
VIF_CR_KP 6
VIF_CR-KI 9

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VIF_CR_LOCK_THR 20
VIF_CR_THR 500
VIF_CR-KP_KI_ADJUST 1
VIF_DELAY_REDUCE 0
VIF_OVER_MODULATIO
N
0
VERSION 005
VIF3 AFEC_D7_[3:0] E
AFEC_D7_[7:4] 18
AFEC_43 14
AFEC_44 90
VIF_CLAMPGAIN_GAIN_
OV
600
VIF_CLAMPGAIN_CLAM
P_O
750
Audio_HIDEV_MODE HIDEV
L1
AFEC_DSP_version 19C
AUDIO_NR_THR 0
CHINA_DES.BO
X delay
0.0
QMAP
ADJUST
Input source RF_PAL_BGHI
AFEC RFIN