2.1 Main board layout ............................................................................................................................................... - 10 -
2.2 MSD6308 includes product ................................................................................................................................ - 13 -
3. Factory/Service OSD Menu and Adjustment ................................................................................................................ - 13 -
3.1 How to enter the Factory OSD Menu .............................................................................................................. - 13 -
3.2 Factory OSD Menu ............................................................................................................................................. - 14 -
.4.2 Upgrading main software with Tftpd32、securecrt .......................................................................................... - 20 -
4.3 Upgrading with the USB disk ............................................................................................................................. - 23 -
6.1 Power assign and block diagram ........................................................................................................................ - 31 -
6.2 Main board signal process .................................................................................................................................. - 31 -
BEFORE SERVICING THE LCD TV, READ THE SAFETY PRECAUTIONS IN THIS
MANUAL.
WHEN REPLACEMENT PARTS ARE REQUIRED, BE SURE TO USE REPLACEMENT
PARTS SPECIFIED BY THE MANUFACTURER.
Proper service and repair is important to the safe, reliable operation of all Hisense Electric Co.,
Ltd Equipment. The service procedures recommended by Hisense and described in this Service
Guide are effective methods of performing service operations. Some of 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.
Hisense 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, Hisense has not undertaken any such broad evaluation. Accordingly, a
serviceman that uses a service procedure or tools, which are not recommended by Hisense,
- 3 -
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Confident
must first satisfy himself thoroughly that neither his safety nor the safe of the equipment
will be jeopardized by the service method selected.
Hereafter throughout this manual, Hisense Electric Co., Ltd will be referred to as Hisense.
1.1 Warning
1.1.1
Critical components having special safety characteristics are identified with a
by the Ref.
No. in the parts list. Use of substitute replacement parts, which do not have the same specified
safety characteristics, may create shock, fire, or other hazards.
Under no circumstances should the original design be modified or altered without written
permission from Hisense. Hisense assumes no liability, express or implied, arising out of any
unauthorized modification of design. Serviceman assumes all liability.
DANGER CAUTION
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 GUIDE.
1.1.2.
All ICs and many other semiconductors are susceptible to electrostatic discharges (ESD).
Careless handling during repair can reduce life drastically. When repairing, make sure that you
are connected with the same potential as the mass of the set by a wristband with resistance.
Keep components and tools also at this same potential.
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1. Never replace modules or other components while the unit is switched on.
2. When making settings, use plastic rather than metal tools. This will prevent any short
circuits and the danger of a circuit becoming unstable.
1.1.3
To prevent electrical shock, do not use this polarized ac plug with an extension cord, receptacle,
or the outlet unless the blades can be fully inserted to prevent blade exposure.
To prevent electrical shock, match wide blade or plug to wide slot, fully insert.
1.1.4
When replacement parts are required, be sure to use replacement parts specified by the
manufacturer or have the same characteristics as the original part. Unauthorized substitutions
may result in fire, electric shock, or other hazards.
1.1.5
Safety regulations require that after a repair the set must be returned in its original condition. In
particular attention should be paid to the following points.
-Note: The wire trees should be routed correctly and fixed with the mounted cable clamps.
-The insulation of the mains lead should be checked for external damage.
1.1.6
(1) Do not touch Signal and Power Connector while this product operates. Do not touch EMI
ground part and Heat Sink of Film Filter.
(2) Do not supply a voltage higher than that specified to this product. This may damage the
product and may cause a fire.
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(3) Do not use this product in locations where the humidity is extremely high, where it may
be splashed with water, or where flammable materials surround it. Do not install or use the
product in a location that does no satisfy the specified environmental conditions. This may
damage the product and may cause a fire.
(4) If a foreign substance (such as water, metal, or liquid) gets inside the panel module,
immediately turn off the power. Continuing to use the product may cause fire or electric
shock.
(5) If the product emits smoke, and abnormal smell, or makes an abnormal sound,
immediately turn off the power. Continuing to use the product, it may cause fire or electric
shock.
(6) Do not disconnect or connect the connector while power to the product is on. It takes
some time for the voltage to drop to a sufficiently low level after the power has been turned
off. Confirm that the voltage has dropped to a safe level before disconnecting or connecting
the connector.
(7) Do not pull out or insert the power cable from/to an outlet with wet hands. It may cause
electric shock.
(8) Do not damage or modify the power cable. It may cause fire or electric shock.
(9) If the power cable is damaged, or if the connector is loose, do not use the product:
otherwise, this can lead to fire or electric shock.
(10) If the power connector or the connector of the power cable becomes dirty or dusty, wipe
it with a dry cloth. Otherwise, this can lead to fire.
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(11) Use only with the cart, stand, tripod, bracket, or table specified by the manufacturer, or
sold with the apparatus. When a cart is used, use caution when moving the cart/apparatus
combination to avoid injury from tip-over.
1.2 Notes
Notes on Safe Handling of the LCD panel and during service
The work procedures shown with the Note indication are important for ensuring the safety of
the product and the servicing work. Be sure to follow these instructions.
• Before starting the work, secure a sufficient working space.
• At all times other than when adjusting and checking the product, be sure to turn OFF the
POWER Button and disconnect the power cable from the power source of the TV during
servicing.
• To prevent electric shock and breakage of PC board, start the servicing work at least 30
seconds after the main power has been turned off. Especially when installing and removing the
power board, start servicing at least 2 minutes after the main power has been turned off.
• While the main power is on, do not touch any parts or circuits other than the ones specified. If
any connection other than the one specified is made between the measuring equipment and the
high voltage power supply block, it can result in electric shock or activation of the
leakage-detection circuit breaker.
• When installing the LCD module in, and removing it from the packing carton, be sure to have
at least two persons perform the work.
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d
Confident
• When the surface of the panel comes into contact with the cushioning materials, be sure to
confirm that there is no foreign matter on top of the cushioning materials before the surface of
the panel comes into contact with the cushioning materials. Failure to observe this precaution
may result in, the surface of the panel being scratched by foreign matter.
• When handling the circuit board, be sure to remove static electricity from your body before
handling the circuit board.
• Be sure to handle the circuit board by holding the large parts as the heat sink or transformer.
Failure to observe this precaution may result in the occurrence of an abnormality in the soldere
areas.
• Do not stack the circuit boards. Failure to observe this precaution may result in problems
resulting from scratches on the parts, the deformation of parts, and short-circuits due to residual
electric charge.
• Routing of the wires and fixing them in position must be done in accordance with the original
routing and fixing configuration when servicing is completed. All the wires are routed far away
from the areas that become hot (such as the heat sink). These wires are fixed in position with
the wire clamps so that the wires do not move, thereby ensuring that they are not damaged and
their materials do not deteriorate over long periods of time. Therefore, route the cables and fix
the cables to the original position and states using the wire clamps.
• Perform a safety check when servicing is completed. Verify that the peripherals of the
serviced points have not undergone any deterioration during servicing. Also verify that the
screws, parts and cables removed for servicing purposes have all been returned to their proper
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Confident
locations in accordance with the original setup.
The lightning flash with arrowhead symbol, within an equilateral triangle is
intended to alert the user to the presence of uninsulated dangerous voltage within
the products enclosure that may be of sufficient magnitude to constitute a risk of electric shock.
The exclamation point within an equilateral triangle is intended to alert the
user to the presence of important operating and maintenance (servicing)
instructions in the literature accompanying the set.
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2. Product Specifications
2.1 Main board layout
2.1.1 1Main board: 5645
Take LHD32K160NAMN 、LTDN48K20DAM main board(5645)for example:
Top:
MSD6308
HDT V INPUT
USB
HDMI
Flash
Tuner
HDMI VGA
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Bottom:
Confident
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2.1.2 Main board: 5650
Take LHD24N10NAM、LHD32N10NAM 、main board(5650)for example:
3. Press number key 1->9->6 ->9 in sequence when “Balance” item is focused.
Note: If necessary, re-do number keys.
4. Factory OSD appears.
Note: Press “exit” key on the RC, which can exit factory OSD menu.
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3.2 Factory OSD Menu
The Factory OSD Menu comprises Factory Menu and Design menu.
3.2.1、Factory Menu
White balance:
Option:
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Init:
Version:
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3.2.2、Design Menu
Note:
The above “Factory/Service OSD Menus” are reference only, please refer to the actual unit to
determine the appearances.
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4. Software updating
Software updating includes boot write and main softwar e update. Usually first write boot to nand flash
With Mstar Tool(MSTV_Tool.exe), then update main software With ISP_Tools、
Tftp and SecureCRT upgrading Tools.
4.1 Write boot software to nand flash
4.1.1 Hardware connecting
You can update the software through a special tool (as following)
Connect the Debug board to the TV use the RS232 (4 pin), the other USB port to the PC.
4.1.2 Mstar Tool (MSTV_Tool.exe) to write boot
1、Power on the TV ->connect the USB-series port Tool.-> double click the MSTV_Tool.exe
Icon(path:supernova\target\isdb.nugget\boot\CreatRomBoot_050B_256x1\tool ), and then a dialog
window will show as below.
2、Click the ” view “button. And then a dialog window will show as below.
Draw on the front of “Hex”
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3、Choose “Eagle/Nugget NAND program”, And then a dialog window will show as below.
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Now, introduce how to choose the file.
ARM \MIPS File button:
Load :supernova\target\isdb.nugget\boot\CreatRomBoot_050B_256x1\050B_TOOL.bin.
DRAM Script button:
Load : supernova\target\isdb.nugget\boot\CreatRomBoot_050B_256x1\MIU init sequence\
DDR3_16_8X_CL11_1600_050B_1T_TOOL.bin.txt.txt
Program button:
After above all have chosen, then Click the “Program” button and wait write end. If “status” shows
*success,please reset power*, it indicates successful.
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.4.2 Upgrading main software with Tftpd32、securecrt
a) Run Tftpd32.exe. Browse the Base Directory file “*_dtv.a7”
Settings as following, late click “OK”.
b) Run Securecrt.exe to set up a serical section.
Select FileConnectNew seccion
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AC power off the TV, this time the mouse must lies on the Securecrt interface.
then AC power on the TV, at the same time press “enter” key.
you will see“<<mstar>>#”on the Securecrt interface.
(the following image).
Next input : set ipaddr 192.168.5.200;set serverip 192.168.5.211;saveenv ,then press “enter”
key. late input: “mstar mscript/auto_update.txt”to update (the following image).
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Note1
After software update has finished, the TV OSD appears following.
Note2:
1) Serverip “192.168.5.211”is PC LAN IP address. When update the main software.
2) you must replace you PC IP address with 192.168.5.211,and net mask with 255.255.255.0 .
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4.3 Upgrading with the USB disk
4.3.1 TV in normal state
1. Copy the “USBUpgrade.bin” file that MBoot and main software named to the root directory
of two USB disks respectively.
2. Insert the USB disk into the USB slot of the TV SET.
3. Press “Menu” button of remote control and call up Factory OSD Menu, choose "
OPTION "->”Software Update(USB)” item.
Detail see 3.1 HowtoentertheFactoryOSDMenu
4. Press the
Press button to select “yes” in the confirm message box, then TV will automatic update.
5. Then it will update the software automatically, Please don’t power off during the updating
process.
key on RC, it will show a confirm message box, Are you sure?
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6. After update succeeds, TV SET will restart automatically.
7. First update the Boot software, second update the main software. In order to
convenience, prepare two USB disks to save different software respectively.
4.3.2 TV in abnormal state
If the method of 4.3.1 can not update successfully or TV can not power on normally.
You will adopt the force update method. Insert the USB disk with USBUpgrade.bin into the U
SB slot of the TV. AC power on the TV , at the moment ,press the” menu “key of TV keypad.
Longer about 5 seconds. Then the TV will automatically update. If defeat, try again.
Note:
After update, you must confirm the software version in the “Factory Menu” and you'd better
do a " UnProtected Clear" in the “Factory Menu”.
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5.Troubleshooting
5.1 Troubleshooting for Remote Control
Remote control does not work
Try new batteries
NO
Replace RC
Check IR receiver
YES
YES
Replace battery
Replace remote control
Change Led & IR board
NO
Change Led & IR cable
NO
Replace main board
YES
Replace Led & IR BD
YES
Replace Led & IR cable
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5.2 Troubleshooting for Function Key
Buttons does not work
Check switches
YES
Check solder connections and
see if any switches are stuck.
NO
Check key board
NO
Check Key BD cable
YES
Replace Key BD
YES
Change Key BD
OK
NO
Replace main board
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5.3 TV won’t Power On
TV won’t power on
Is LED
light?
NO
Check Power
Output
YES
Make Sure Power
source is live
YES
NO
BLUE
RED
Panel Bright
NO
YES
Check signal
Source
YES
NO
Check Power
Cord
NO
Try Power on by
RC and Button
Neither
works
Replace Main
BD
YES
Only
one works
Both
Work
Replace
Power Cord
Check/replace IR
BD or Keypad
PCA
NO
(to contact Hisense tech support.)
Replace Main BD
Replace Panel
OK
YES
Power on
NO
Replace Power BD
YES
OK
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5.4 Troubleshooting for Audio
No sound
Check connecter
YES
Reconnect
NO
Check speaker wire
NO
Check speaker set
YES
YES
Replace speaker wire
Replace speaker set
NO
Replace main board
NO
YES
OK
Power Supply Board
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5.5 Troubleshooting for TV/VGA/HDMI input
No picture on the screen
NO
Check Signal Source
Make sure signal
source is available
YES
Check connect
NO
YES
Check cab le
NO
Replace main board
Reconnect
Replace cable
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5.6 Troubleshooting for YPbPr input
No picture on the screen
Check Source work or not
YES
Check connect
NO
Check Wires (Green Blue, Red)
NO
Replace main board
NO
YES
YES
Check Source Device
Reconnect
Replace wires
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5.7 Troubleshooting for Video input
No picture on the screen
Check Source work or not
YES
Check connect
NO
Check Cable/ Wires
NO
Replace main board
NO
YES
YES
Check Signal Source
Reconnect
Replace Cable/Wires
6. Circuit instruction
6.1 Power assign and block diagram
6.2 Main board signal process
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Confident
7. Schematic circuit diagram
8. Explode View
- 33 -
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5
Confident
4
3
2
1
5V_STB/2A
0R
DD
12V
TPS54328
12V
5VAIN/3A
PWR-ON/OFF
IN
5VAIN
POWER IN
IN
+12V12V
MOS
CC
X3
X1VGA
X1
X1
X2
X1RJ45
HDMI1
HDMI2
HDMI3
YUV
AV1AV
USB1
USB2
MSD6308RT
输入
HDMI
MHL
VGA
输入
BB
输入
YUVI
输入
输入
USB
网络输入
12V/2A
AMS1117-3.3V +3.3V_Standby/300MA
+5V_MHL/1ASWITCH
NAND_FLASH
2GBITS
SPI FLASH
16MBITS
EEPROM
32KBITS
PANELLVDS
TAS5727
EARPHONE
+1.15V_VDDC/3A
+1.5V_DDR/250MA
+3.3VAl/200MAAMS1117-3.3V5VAIN
L_OUT
R_OUT
MP1495
1117ADJ
AMS1117-3.3V 3.3V_Tuner/250MA5VAIN
FUSE5V_USB/1A5VAIN
MOSVCC-Panel /1.5A 0R
TAS5727
I2C
L
R
L
R
MSD6308RT
AV_OUT
输出
音视频
L/R_OUT
遥控接收、键控板
光感接收、指示板
3
2
1
AV_L/R
IF1
TUNE
输入
AA
5
IF2
IF
VGA_L/R
音频输入
4
YUV_L/R
X3AV
Page 34
5
MB:5645
Power Input
XP21
12
3
4
BL-ADJUST
DD
VCC-AUDIO
5VS
BLM18PG330SN1D/NC
3D_EN_I4
3D_SYNC_DY4
L52
BLM18PG330SN1D/NC
VCC-AUDIO
L57
R42 0R
VCC-A
R730R
12VS
STANDBY
BL
5
7
9
11
13
BL-ON/OFF
6
12VS
8
10
VCC-AUDIO
12
BLM18PG330SN1D/NC
14
BLM18PG330SN1D/NC
L43
L58
R19 0R
5VAIN
DVDD3V3
4
12VS
BLM18PG330SN1D/NC
L50
+12V
L51
BLM18PG330SN1D
L53
12VS
BLM21PG220SN1D
L54
+12V
BLM21PG220SN1D/NC
12VS
C447
10u/16V
5VS
L55
BLM21PG220SN1D
BLM21PG220SN1D/NC
L56
5Vstb
C448
10u/10V
VCC-A
+12V
C449
10u/16V
VCC-A
12VSTB
5Vstb
5VAIN
3
5VAIN
R9
R14
R8
10k/NC
4.7k
R11
4.7k
R22
0R
V9
MMBT3904LT1/NC
23
PWR-ON/OFF
1
R12
0R/NC
R13
4.7k
VBL_CTRL2
BRI_ADJ2
PWR-ON/OFF2
10k/NC
BRI_ADJ
R10
1
VBL_CTRL
1k
3.3VA
V6
MMBT3904LT1
23
1
R20
4.7k/NC
R15
4.7k
V10
MMBT3904LT1
23
R17
1k
R18
4.7k/NC
R16
0R
R25
0R/NC
2
BL-ON/OFF
R26
0R/NC
C4
10u/16V/NC
DIM_INPANEL 4
DIM_OUTPANEL 4
BL-ADJUST
+3.3V_Standby
R1
10k
R2
0R/NC
R3 4.7k
1
5Vstb
R4
10k
V2
MMBT3904LT1
23
1
5Vstb
R6
10k
R5
4.7k
1
R7
V1
100R
MMBT3904LT1
23
STANDBY
Power for Panel
for LED<=32"
+3.3V_Standby
CC
PWR-ON/OFF2
H:ON
L:OFF
PWR-ON/OFF
R40
1k
R41
12VS
R45
12VS
100k
C11
100n/16V
R43
4.7k
R44
100k
10k
V13
1
MMBT3904LT1
23
C44
100n/16V
1
2
3
4
+12V
C15
10u/16V
N40
AO4459
S1
S2
S3
G
+12V
8
D1
7
D1
6
D2
5
D2
for LED<=32"
R46
C12
10k
100n/16V
R47
1k
MMBT3904LT1
5Vstb5VAIN
N42
AO4459
1
8
S1
D1
2
7
S2
D1
3
6
S3
D2
4
5
G
D2
R48
10k
1
V28
C16
1u/16V
23
C64
22u/6.3V
PWR-ON/OFF
C13
1u/16V
PANEL_ON/OFF2
+12V
5VAIN
BLM18PG121SN1/NC
3.3VA
L5
BLM18PG121SN1
L40
R33 10k
10k/NC
R38
C19
10u/16V
C20
100n/16V
R78 10k
R31
0R/NC
100n/16V
1
C32
R32 1k
V8
MMBT3904LT1
23
R27
20k
VDD_Panel
C38
1u/25V
1
2
V19
1
R29
10k
V15
MMBT3904LT1
23
3
AO3401L
C33 100n/16V/NC
VCC-Panel
C34
10u/16V
C35
100n/16V
5V Power-12V/5V
12VSTB
R235
10k
C226
C230
10u/16V/NC
10u/16V
靠近
DC-DC
C211
C225
1u/25V
100n/16V
BB
Core Power 1.15V-MP1495(3A)
+12V
C244
10u/16V
C31
100n/16V
10u/16V
R35
100k
R36
33k
C39
C231
100n/16V
2
7
6
8
IN
VCC
EN/SYNC
FB
3.3V Standby Power
5Vstb+3.3V_Standby
L80
BLM18PG121SN1
AA
C48
C49
100n/16V
2.2u/10V
1.25 x _1+180/110_ = 3.3V
5
3
VIN
SPX1117M3-ADJLD1117A-ADJ
8.2n/50V
MP1495
N17
8
1
3
C212
N8
VOUT
VOUT
ADJ
1
N7
VIN
EN
VRG5
SS4GND
9
R250
100k
3
SW
1
SS
5
BST
4
GND
4
2
SW
VBST
VFB
EPAD
TPS54528
R58
10k
C37
1n/50V
6
7
100n/16V
2
5
C242
100n/16V
R34
10R
R30
110R
R28
180R
L08
4.7 uH
C216
L09
6.8uH
R224
R1
130k
R219
22R/NC
R220
27k
C215
1n/50V/NC
Vout=0.765*(1+R1/R2)=5.16V
R1:130k, R2:27K//140K.
C241
15p/50V
R49
0R
R39
82k
C50
C51
100n/16V
10u/10V
Main IC Max:300mA
靠近电感
L08和DC-DC
5VS
C224
22p/50V
R229
140k
C234
22u/6.3V
C233
22u/6.3V
22u/6.3V/NC
R2
+1.15V_VDDC
R255
22k
R249
48.7k
C243
22u/6.3V
C240
22u/6.3V
C247
100n/16V
3.3V Normal Power
5VAIN
L60
C396
100n/16V
3
C741
10u/10V
3.3VA
BLM21PG220SN1D
BLM21PG220SN1D
4
放置
C235
N35
LD1117A-3.3AZ1117H-3.3
VOUT
VIN
VOUT
ADJ
1
R68
0R
DVDD3V3
L63
4
2
R67
0R/NC
C732
22u/6.3V
3.3VA
C733
22u/6.3V
C1113
100n/16V
3
1.5V Normal Power for DDR3
N36
5VAIN
C54
100n/16V
SPX1117M3-ADJLD1117A-ADJ
3
VIN
C60
10u/10V/NC
SOT-223
4
VOUT
2
VOUT
ADJ
1
R59
1k
R60
200R
2
BLM18PG121SN1
C56
10u/10V
L07
250mA
+1.5V_DDR
Hisense Electric Co.,Ltd.
Hisense Electric Co.,Ltd.
Hisense Electric Co.,Ltd.
No.11,Jiangxi Road,Qingdao,China