JVC LT46DR710, HISENSE MSD209GL Schematic
LCD Television
Service Manual
Chassis： MSD209GL
Product Type：
Ver 1.0
Electric Co.，.
April，2010
LCD TV Service Manual
Contents
Contents............................................................................................................................................... - 2 -
Service Manual.................................................................................................................................... - 3 -
1. Precautions and notices.............................................................................................................. - 3 -
1.1 Warning.............................................................................................................................- 4 -
1.2 Notes ................................................................................................................................. - 7 -
2. Factory/Service OSD Menu and Adjustment............................................................................. - 9 -
2.1 To enter the Factory OSD Menu.......................................................................................- 9 -
2.2 Factory OSD Menu...........................................................................................................- 9 -
3. UPDATE SOTFWRE............................................................................................................... - 13 -
4. Troubleshooting....................................................................................................................... - 14 -
4.1 Troubleshooting for Remote Control.............................................................................. - 14 -
4.2 Troubleshooting for Function Key.................................................................................. - 15 -
4.3 TV won’t Power On........................................................................................................- 16 -
4.4 Troubleshooting for Audio.............................................................................................. - 17 -
4.5 Troubleshooting for TV/VGA/HDMI input.................................................................... - 18 -
4.6 Troubleshooting for YPbPr input.................................................................................... - 19 -
4.7 Troubleshooting for Video/S-Video input....................................................................... - 20 -
5. Explode View...........................................................................................................................- 21 -
6. Schematic circuit diagram........................................................................................................ - 21 -
Hisense Confidential
- 2 -
LCD TV Service Manual
Service Manual
1. Precautions and notices
BEFORE SERVICING THE LCD TV, READ THE SAFETY PRECAUTIONS IN
THIS MANUAL.
USE ONLY MANUFACTURER SPECIFIED REPLACEMENT PARTS WHEN
SERVICING.
USE OF NON-AUTHORIZED PARTS WILL VOID THE MANUFACTURE'S
WARRANTY
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 these 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 and pose risk of personal injury
. It is also important to understand that these CAUTIONS and NOTICES ARE NOT
EXHAUSTIVE. Service should only be performed by an experienced electronics
Hisense Confidential
- 3 -
LCD TV Service Manual
techician trained in the proper Television safety and service methods and procedures
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 non-manufacturer's recommended parts 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.
Servicetech 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, be sure to
use anti-static table mats and properly use a grounding wrist stra. Keep components and
tools also at this same potential.
Hisense Confidential
- 4 -
IMPORTANT:
Always disconnect the power cord from AC outlet before replacing parts or modules.
1.1.3
To prevent electrical shock, use only a properly grounded 3 prong outlet or extension
cord.
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 and will void the
LCD TV Service Manual
manufacturer's warranty.
1.1.5
Safety regulations require that after a repair the set must be returned in its original
condition. In addition, prior to closing set, check that:
-Note:
>All wire harnesses and flex cables are properly routed and secured with factory tape
and/or mounted cable clamps.
> All cables and connectors are properly insulated and do not have any bare wires/lead
exposed.
Hisense Confidential
- 5 -
1.1.6
(1) Do not supply a voltage higher than that specified to this product. This may
damage the product and may cause a fire.
(2) Do not use this product:
> High humidity areas
> In an area where any water could enter or splash into the unit.
High humidity and water could damage the product and cause fire.
(3) 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
LCD TV Service Manual
or electric shock.
(4) 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.
(5) Do not pull out or insert the power cable from/to an outlet with wet hands. It may
cause electric shock.
(6) Do not damage or modify the power cable. It may cause fire or electric shock.
(7) 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.
(8) 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.
(9) Use only with the cart, stand, tripod, bracket, or table specified by the manufacturer,
Hisense Confidential
- 6 -
or sold with the apparatus. When a cart is used, use caution when moving the
cart/apparatus combination to avoid injury from tip-over.
LCD TV Service Manual
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
may trip the main 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.
• When the surface of the panel comes into contact with the cushioning materials, be
Hisense Confidential
- 7 -
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.
• 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 soldered 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
LCD TV Service Manual
short-circuits due to residual electric charge.
• 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 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.
Hisense Confidential
- 8 -
LCD TV Service Manual
2. Factory/Service OSD Menu and Adjustment
2.1 To enter the Factory OSD Menu
a. With factory RC (remote control)
1. Press “M” button and enter factory mode.
2. Press “Menu” button and enter factory OSD menu.
3 . Press “CH+”/“CH-” button select the function menu, press “VOL+”/“VOL-” enter the
selected function menu. Press “VOL+”/“VOL-” button adjust values in the menu.
4. Press “M” button exit factory mode in the factory OSD menu.
When TV outgoing factory,user can not enter factory OSD menu with Factory Remote
b. With user’s RC
1. Power TV On
2. Press Menu button and call up User OSD Menu
3. Select Sound-> Balance
4. When Balance value is “0”,Enter 0->5->3 ->2 in sequence.
Note: If necessary, re-do number keys.
5. Factory OSD appears.
6. Press the standby button then AC turn off and restart the TV, which can exit factory OSD
menu.
2.2 Factory OSD Menu
The Factory OSD Menu comprises Factory Menu and Design Menu .
2.2.1、Factory Menu
Factory Menu
Panel
Software Version
WhiteBalance
Auto Color
Optons
Clean All
Clean Protect
Test Pattern
Hisense Confidential
- 9 -
White Balance
Mode
R-GAIN:
G-GAIN:
B-GAIN:
R-OFFSET:
G-OFFSET:
B-OFFSET:
TEMPERATURE
Auto Color
MODE
AUTO ADC
R-GAIN:
G-GAIN:
B-GAIN:
R-OFFSET:
G-OFFSET:
B-OFFSET:
LCD TV Service Manual
Hisense Confidential
- 10 -
Options
TOFAC M
Logo Hisense
OSD language English
HDCP Mode outside
HIDEV off
Test Pattern OFF
LCD TV Service Manual
2.2.2、Design Menu
Design Menu
Color T emperature
Video Curve
Picture Mode
Audio Curve
Sound Mode
EMC Adjust
Over Scan
Hisense Confidential
- 11 -
LCD TV Service Manual
Picture Mode
Mode
Picture Mode Standard
Soft
User
Bright
BRIGHTNESS 50
C0NTRAST 50
COLOR 50
Video Curve
MODE Brightness
Sharpness
Color
Contrast
TINT
Curve _0
Curve _25
Curve _50
Curve _75
Sound Mode
120HZ
500HZ
1.5KHZ
5KHZ
10KHZ
Mode Standard
Music
Movie
Speech
Audio Curve
Curve _0
Curve _25
Curve _50
Curve _75
Curve _100
MODE ATV VOL
AV VOL
HDMI VOL
120HZ/500HZ/
1.5KHZ/5KHZ
/10KHZ
Hisense Confidential
- 12 -
SSC Adjust
SSC MIU
MIU SPAN
MIU STEP
SSC LVDS
LVDS SPAN
LVDS STEP
LCD TV Service Manual
Over Scan
H_Size
H_Pos
V_Size
V_Pos
Note：
The above “Factory/Service OSD Menu” are reference only, please refer to the actual units to
determine the appearances.
3. UPDATE SOTFWRE
MSD209 Series can update with USB, the software name should be merge.bin.
The Updating Steps : turn on the TV then insert the USB(the update file merge.bin
should in root directory), you should go to Option->Software Update(USB) in the main
menu. After the updating，TV will reboot。
If enter the Software Update option， it can not update，please reboot the TV and insert
the USB again.
After the updating, you must confirm the software in the Factory Menu and you'd better
"Clear All".
Hisense Confidential
- 13 -
Loading...