T200
LCD-Monitor
Chassis : LTW22HS / LTW22GS
LTW20HS / LTW20GS
Model :
SERVICE
TFT-LCD Monitor Contens
T220 / T220G
T220N / T220GN
T200 / T200G
T200N / T200GN
Manual
T220 / T220G / T220N / T220GN
T200 / T200G / T200N / T200GN
1. Precautions
2. Product specications
3. Disassembly and Reassemble
4. Troubleshooting
5. Exploded View & Part List
6. Wiring Diagram
7. Schematic Diagram
Refer to the service manual in the GSPN (see the rear cover) for the more information.
Contents
1. Precautions .............................................................................................................. 1-1
1-1. Safety Precautions ......................................................................................................... 1-1
1-2. Servicing Precautions ..................................................................................................... 1-2
1-3. Static Electricity Precautions .......................................................................................... 1-2
1-4. Installation Precautions .................................................................................................. 1-3
2. Product specications ............................................................................................ 2-1
2-1. Feature & Specications ................................................................................................. 2-1
2-2. Spec Comparison to the Old Models .............................................................................. 2-2
2-3. Accessories .................................................................................................................... 2-3
2-4. Accessories (Sold separately) ........................................................................................ 2-3
3. Disassembly and Assembly ................................................................................... 3-1
3-1. SIMPLE STAND Disassembly ........................................................................................ 3-1
4. Troubleshooting ...................................................................................................... 4-1
4-1. Troubleshooting .............................................................................................................. 4-1
4-2. When the Power Does Not Turn On ............................................................................... 4-2
4-3. When the screen is blank (Analog) .................................................................................4-4
4-4. When a blank screen is displayed (Digital) .....................................................................4-7
4-5. Error Examples and Actions ......................................................................................... 4-10
4-6. Adjustment .................................................................................................................... 4-11
5. Exploded View & Part List ...................................................................................... 5-1
5-1. Exploded View-T200 / T200(G) ...................................................................................... 5-1
5-2. Parts List-T200 / T200(G) ............................................................................................... 5-3
5-3. Exploded View-T220 / T220(G) ...................................................................................... 5-4
5-4. Parts List-T220 / T220(G) ............................................................................................... 5-6
6. Wiring Diagram ........................................................................................................ 6-1
6-1. Wiring Diagram - Main Board ......................................................................................... 6-1
6-2. Wiring Diagram - IP Board .............................................................................................. 6-2
6-3. Connector Functions ...................................................................................................... 6-3
6-4. Cables ............................................................................................................................ 6-3
7. Schematic Diagram ................................................................................................. 7-1
7-1. Circuit Descriptions ......................................................................................................... 7-1
7-2. Schematic Diagrams (Scaler Part) ................................................................................. 7-2
7-3. Schematic Diagrams (Power Flowchart) ........................................................................ 7-2
7-4. Schematic Diagrams (IP Board) ..................................................................................... 7-3
7-5. Schematic Diagrams (Main PBA) .................................................................................. 7-5
GSPN (Global Service Partner Network)
Area Web Site
North America http://service.samsungportal.com
Latin America http://latin.samsungportal.com
CIS http://cis.samsungportal.com
Europe http://europe.samsungportal.com
China http://china.samsungportal.com
Asia http://asia.samsungportal.com
Mideast & Africa http://mea.samsungportal.com
This Service Manual is a property of Samsung Electronics Co.,Ltd.
Any unauthorized use of Manual can be punished under applicable
International and/or domestic law.
© 2008 Samsung Electronics Co.,Ltd.
All rights reserved.
Printed in Korea
P/N: BN82-00357A-01
1. Precautions
1. Precautions
1-1. Safety Precautions
Follow these safety, servicing and ESD precautions to prevent damage and to protect against potential hazards such as
electrical shock.
1-1-1. Warnings
1.
For continued safety, do not attempt to modify the circuit board.
2.
Disconnect the AC power and DC power jack before servicing.
1-1-2. Servicing the LCD Monitor
1.
When servicing the LCD Monitor, Disconnect the AC line cord from the AC outlet.
2.
It is essential that service technicians have an accurate voltage meter available at all times. Check the calibration of
this meter periodically.
1-1-3. Fire and Shock Hazard
Before returning the monitor to the user, perform the following safety checks:
1.
Inspect each lead dress to make certain that the leads are not pinched or that hardware is not lodged between the
chassis and other metal parts in the monitor.
2.
Inspect all protective devices such as nonmetallic control knobs, insulating materials, cabinet backs, adjustment and
compartment covers or shields, isolation resistorcapacitor networks, mechanical insulators, etc.
3.
Leakage Current Hot Check (Figure 1-1):
WARNING : Do not use an isolation transformer during this test.
Use a leakage current tester or a metering system that complies with American National Standards Institute (ANSI
C101.1, Leakage Current for Appliances), and Underwriters Laboratories (UL Publication UL1410, 59.7).
(READING SHOULD)
NOT BE ABOVE 0.5mA
DEVICE
UNDER
TEST
TEST ALL
EXPOSED METAL
SURFACES
2-WIRE CORD
*ALSO TEST WITH
PLUG REVERSED
(USING AC ADAPTER
PLUG AS REQUIRED)
4.
With the unit completely reassembled, plug the AC line cord directly into a 120V AC outlet. With the unit’s AC switch
LEAKAGE
CURRENT
TESTER
EARTH
GROUND
Figure 1-1. Leakage Current Test Circuit
rst in the ON position and then OFF, measure the current between a known earth ground (metal water pipe, conduit,
etc.) and all exposed metal parts, including: metal cabinets, screwheads and control shafts.
The current measured should not exceed 0.5 milliamp.
Reverse the power-plug prongs in the AC outlet and repeat the test.
1-1-4. Product Safety Notices
Some electrical and mechanical parts have special safetyrelated characteristics which are often not evident from visual
inspection. The protection they give may not be obtained by replacing them with components rated for higher voltage,
wattage, etc. Parts that have special safety characteristics are identied by on schematics and parts lists. A substitute
replacement that does not have the same safety characteristics as the recommended replacement part might create
shock, re and/or other hazards. Product safety is under review continuously and new instructions are issued whenever
appropriate.
1-1
1-2
1. Precautions
1-2. Servicing Precautions
WARNING: An electrolytic capacitor installed with the wrong polarity might explode.
Caution: Before servicing units covered by this service manual, read and follow the Safety Precautions section of
this manual.
Note:
1-2-1 General Servicing Precautions
1.
Always unplug the unit’s AC power cord from the AC power source and disconnect the DC Power Jack before
attempting to:
(a) remove or reinstall any component or assembly, (b) disconnect PCB plugs or connectors, (c) connect a test
component in parallel with an electrolytic capacitor.
2.
Some components are raised above the printed circuit board for safety. An insulation tube or tape is sometimes
used. The internal wiring is sometimes clamped to prevent contact with thermally hot components. Reinstall all such
elements to their original position.
3.
After servicing, always check that the screws, components and wiring have been correctly reinstalled. Make sure that
the area around the serviced part has not been damaged.
4.
Check the insulation between the blades of the AC plug and accessible conductive parts (examples: metal panels,
input terminals and earphone jacks).
5.
Insulation Checking Procedure: Disconnect the power cord from the AC source and turn the power switch ON.
Connect an insulation resistance meter (500 V) to theblades of the AC plug.
The insulation resistance between each blade of the AC plug and accessible conductive parts (see above) should be
greater than 1 megohm.
6.
Always connect a test instrument’s ground lead to the instrument chassis ground before connecting the positive lead;
always remove the instrument’s ground lead last.
If unforeseen circumstances create conict between the following servicing precautions and any of the
safety precautions, always follow the safety precautions.
1-3. Static Electricity Precautions
Some semiconductor (solid state) devices can be easily damaged by static electricity. Such components are commonly
called Electrostatically Sensitive Devices (ESD). Examples of typical ESD are integrated circuits and some eld-effect
transistors. The following techniques will reduce the incidence of component damage caused by static electricity.
1.
Immediately before handling any semiconductor components or assemblies, drain the electrostatic charge from your
body by touching a known earth ground. Alternatively, wear a discharging wrist-strap device. To avoid a shock hazard,
be sure to remove the wrist strap before applying power to the monitor.
2.
After removing an ESD-equipped assembly, place it on a conductive surface such as aluminum foil to prevent
accumulation of an electrostatic charge.
3.
Do not use freon-propelled chemicals. These can generate electrical charges sufcient to damage ESDs.
4.
Use only a grounded-tip soldering iron to solder or desolder ESDs.
5.
Use only an anti-static solder removal device. Some solder removal devices not classied as “anti-static” can generate
electrical charges sufcient to damage ESDs.
6.
Do not remove a replacement ESD from its protective package until you are ready to install it. Most replacement ESDs
are packaged with leads that are electrically shorted together by conductive foam, aluminum foil or other conductive
materials.
7.
Immediately before removing the protective material from the leads of a replacement ESD, touch the protective
material to the chassis or circuit assembly into which the device will be installed.
Caution: Be sure no power is applied to the chassis or circuit and observe all other safety precautions.
8.
Minimize body motions when handling unpackaged replacement ESDs. Motions such as brushing clothes together,
or lifting your foot from a carpeted oor can generate enough static electricity to damage an ESD.
1. Precautions
1-4. Installation Precautions
For safety reasons, more than two people are required for carrying the product.
1.
Keep the power cord away from any heat emitting devices, as a melted covering may cause re or electric shock.
2.
Do not place the product in areas with poor ventilation such as a bookshelf or closet. The increased internal
3.
temperature may cause re.
Bend the external antenna cable when connecting it to the product. This is a measure to protect it from being exposed
4.
to moisture. Otherwise, it may cause a re or electric shock.
Make sure to turn the power off and unplug the power cord from the outlet before repositioning the product. Also check
5.
the antenna cable or the external connectors if they are fully unplugged. Damage to the cord may cause re or electric
shock.
Keep the antenna far away from any high-voltage cables and install it rmly. Contact with the highvoltage cable or the
6.
antenna falling over may cause re or electric shock.
When installing the product, leave enough space (10cm) between the product and the wall for ventilation purposes.
7.
A rise in temperature within the product may cause re.
1-3
1. Precautions
Memo
1-4
2. Product specications
2-1. Feature & Specications
Model T220 / T220G / T200N / T220GN
T200 / T200G / T200N / T200GN
Feature
Panel Specications: 300cd/m2, 2ms, CR 1000:1(DC), 170/160(CR>10)
�
DPMS : <1W
�
Magic Bright3, Magic Tune, Windows Vista authentication
�
DC 20,000: 1 applied
�
Supports xed vertical and horizontal ratios
�
Supports camera effect mode: Black and white/Sepia/Aqua/Green
�
Specications
Item Description
Model T220 / T220G / T200N / T220GN T200 / T200G / T200N / T200GN
2. Product specications
LCD Panel
Scanning Frequency Horizontal : 30 kHz ~ 81 kHz (Automatic)
Display Colors 16.7 Million colors
Maximum resolution Horizontal: 1680 Pixels
Input Signal 22” Dual 20” Dual
Input Sync Signal Seperate H/V sync, Composite H/V, Sync-on-Green
Maximum Pixel Clock rate 135 Mhz
Active Display
(Horizontal/Vertical)
AC power voltage & Frequency AC 110V~130V, 60Hz & AC, 200V~240V 50Hz
Power Consumption 45 W 40W
Dimensions Set (W x D x H)
Weight (Set/Package) Set : 5.8kg, Package : 7.5Kg
TFT-LCD panel, RGB vertical stripe, normally white transmissive,
22”wide Viewable 0.258(H) mm x
0.258(V) mm pixel pitch
Vertical: 56 Hz ~ 75 Hz(WSXGA+ : 60Hz)
Vertical: 1050 Pixels
Level: TTL level
473.76(H) x 296.1(V)
520 x 215 x 442 mm 486 x 215 x 422 mm
(With Stand)
20”wide Viewable 0.258(H) mm x
0.258(V) mm pixel pitch
Set : 5.4kg, Package : 7.0Kg
(With Stand)
Environmental Considerations Operating Temperature: 10˚C ~ 50˚C(50˚F ~ 122˚F)
Operating Humidity : 10% ~ 90%
Operating Temperature: -20˚C ~ 45˚C(-4˚F ~ 113˚F)
Operating Humidity: 5% ~ 90%
Note: Designs and specications are subject to change without prior notice.
2-1
2-2
2. Product specications
2-2. Spec Comparison to the Old Models
Model
Design
Resolution 1680 x 1050 1440 x 900
Input
Response Time 2ms 5ms(W to B)
Viewing Angle 170/160(CR>10) 170/160(CR>10)
Brightness 300cd/m² 300cd/m²
T220 / T220G / T200N / T220GN
T200 / T200G / T200N / T200GN
T220, T220G, T200, T200G :
Analog / DVI Digital
T220N, T220GN, T200N, T200GN :
Analog
Mckinley(943BW)
Analog / Digital with HDCP
Contrast 20,000:1(DC) 1000:1
MagicBright 7 step 7 step
Feature
Magic Color
Color Effect
Image Size
Magic Bright3
Magic Tune (Premium)
Magic Color
Color Effect
Image Size
Magic Bright3
Magic Tune (Premium)
*Color Effect
- Grey scale: Images are displayed in a grey tone on the screen.
- Green: Images are displayed in a green tone on the screen.
- Aqua: Images are displayed in a blue tone on the screen.
- Sepia: Images are displayed in a brown tone on the screen.
Image Size : If the resolution is not wide resolution, this option allows the screen size to be selected as normal or wide.
2-3
2. Product specications
2-3. Accessories
Product Description Ccde. No Remark
Quick Setup Guide BH68-00907A
Warranty Card
(Not available in all locations)
User’s Guide,
Monitor Driver,
Natural Color Pro Software
D-Sub(15 Pin) Cable BN39-00244G
Power Cord 3903-000042
2-4. Accessories (Sold separately)
Product Description Ccde. No Remark
DVI Cable BN39-00246L
BH68-00633B
BN59-00716A
Samsung Electronics
Service center
Samsung Electronics
Service center
2. Product specications
Memo
2-4
3. Disassembly and Assembly
3. Disassembly and Assembly
This section describes the disassembly and reassembly sequences for this monitor.
Warning: As this monitor has parts that are sensitive to static electricity, be careful when handling them.
3-1. Disassembly
Caution: 1. Turn the monitor off before beginning the disassembly process.
2. When disassembling the monitor, do not use any metal tools except for the provided jig.
3. Disassemble the monitor carefully as directed in the following procedures.
Description Photo Screws
1. Place a soft cloth on the table and place
the monitor onto it with the front part facing
downwards. Hold the monitor set with one hand
and hold and pull the stand body backwards with
the other hand to remove the stand body from the
monitor set.
2. Insert both hands into the groove and then lift up
and remove the cover.
3. Remove the four (2) screws.
3-1
3-2
3. Disassembly and Assembly
Description Photo Screws
4. Remove the cover and the LCD panel using the
provided jig on both grooves at the bottom.
5. Remove the INVERTER wire, LVDS cable, and
FUNCTION cable, and then remove the SHIELDCOVER.
INVERTER,
LVDS
FUNCTION
Description Photo Screws
6. After disconnecting SHIELD-LAMP of left side,
disassemble lamp wire between panel and IP
Board.
3. Disassembly and Assembly
7. Removethefour(4)screwsshowninthegure
and remove the Bracket support.
8. Remove the two (2) screws and then remove the
holders from the four (4) snaps designated in the
rightgureusingtheprovidedjig.
3-3
3-4
3. Disassembly and Assembly
Description Photo Screws
9. Remove the connectors.
Caution : Servicing is not supported for the PCB.
▶Assembly
10. The assembly is in the reverse order of the
disassembly.
11. Connect the disassembled snap and the LED
module again.
12.Fixtheconnectingwirewithlamenttape
Caution : If the wire is damaged when closing the
cover, an operating error may occur.
Therefore, make sure to close the
coverafterxingitwithlamenttape.
lamenttape
Description Photo Screws
13. The assembly is in the reverse order of the
disassembly. Insert the cover into the groove and
then press both sides.
※The assembly is in the reverse order of disassembly.
3. Disassembly and Assembly
3-5
3. Disassembly and Assembly
Memo
3-6
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