Service Manuals, User Guides, Schematic Diagrams or docs for : Samsung Monitor Monitor Samsung SyncMaster 800TFT
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COLOR MONITOR
SyncMaster 800TFT
(Toshiba Panel)
SERVICE Manual
COLOR MONITOR CONTENTS
1. Precautions
2. Product Specifications
3. Disassembly & Reassembly
4. Alignments & Adjustments
5. Troubleshooting
6. Exploded View & Parts List
7. Electrical Parts List
8. Block Diagram
9. Wiring Diagram
10. Schematic Diagrams
1 Precautions
Follow these safety, servicing and ESD precautions to prevent damage and to protect against potential hazards such as
electrical shock.
1-1 Safety Precautions
1-1-1 Warnings
1. For continued safety, do not attempt to modify the (READING SHOULD
circuit board. NOT BE ABOVE 0.5mA)
2. Disconnect the AC power and DC power jack
before servicing. DEVICE
LEAKAGE
CURRENT
UNDER TESTER
1-1-2 Servicing the LCD Monitor TEST
TEST ALL
EXPOSED METAL
1. When servicing the LCD Monitor, Disconnect the SURFACES
AC line cord from the AC outlet.
2-WIRE CORD
2. It is essential that service technicians have an
accurate voltage meter available at all times. Check
the calibration of this meter periodically. *ALSO TEST WITH
PLUG REVERSED
(USING AC ADAPTER
PLUG AS REQUIRED) EARTH
1-1-3 Fire and Shock Hazard GROUND
Before returning the monitor to the user, perform the Figure 1-1. Leakage Current Test Circuit
following safety checks:
1. Inspect each lead dress to make certain that the 4. With the unit completely reassembled, plug the AC
leads are not pinched or that hardware is not line cord directly into a 120V AC outlet. With the
lodged between the chassis and other metal parts in unit's AC switch first in the ON position and then
the monitor. OFF, measure the current between a known earth
2. Inspect all protective devices such as nonmetallic ground (metal water pipe, conduit, etc.) and all
control knobs; insulating materials; cabinet backs; exposed metal parts, including: metal cabinets,
adjustment and compartment covers or shields; screwheads and control shafts. The current
isolation resistor-capacitor networks; mechanical measured should not exceed 0.5 milliamp. Reverse
insulators, etc. the power-plug prongs in the AC outlet and repeat
3. Leakage Current Hot Check (Figure 1-1): WARNING: the test.
Do not use an isolation transformer during this test.
Use a leakage current tester or a metering system 1-1-4 Product Safety Notices
that complies with American National Standards
Some electrical and mechanical parts have special
Institute (ANSI C101.1, Leakage Current for
safety-related characteristics which are often not
Appliances), and Underwriters Laboratories (UL evident from visual inspection. The protection they give
Publication UL1410, 59.7). may not be obtained by replacing them with
components rated for higher voltage, wattage, etc. Parts
that have special safety characteristics are identified by
! on schematics and parts lists. A substitute
replacement that does not have the same safety
characteristics as the recommended replacement part
may create shock, fire and / or other hazards. Product
safety is under review continuously and new
instructions are issued whenever appropriate.
SyncMaster 800TFT 1-1
1 Precautions
1-2 Servicing Precautions
WARNING: An electrolytic capacitor installed with the wrong polarity may explode.
Caution: Before servicing units covered by this service manual, read and follow the Safety Precautions
section of this manual.
Note: If unforeseen circumstances create conflict between the following servicing precautions and any of the
safety precautions, always follow the safety precautions.
1-2-1 General Servicing Precautions
1. Always unplug the unit's AC power cord from the 4. Check the insulation between the blades of the AC
AC power source and disconnect the DC power plug and accessible conductive parts (examples:
jack before attempting to: metal panels, input terminals and earphone jacks).
(a) remove or reinstall any component or assembly. 5. Insulation Checking Procedure: Disconnect the
(b) disconnect PCB plugs or connectors. power cord from the AC source and turn the power
(c) connect a test component in parallel with an switch ON. Connect an insulation resistance meter
electrolytic capacitor. (500 V) to the blades of the AC plug.
2. Some components are raised above the printed The insulation resistance between each blade of the
circuit board for safety. An insulation tube or tape AC plug and accessible conductive parts (see
is sometimes used. The internal wiring is above) should be greater than 1 megohm.
sometimes clamped to prevent contact with
6. Always connect a test instrument's ground lead to
thermally hot components. Reinstall all such
the instrument chassis ground before connecting the
elements to their original position.
positive lead; always remove the instrument's
3. After servicing, always check that the screws, ground lead last.
components and wiring have been correctly
reinstalled. Make sure that the area around the
serviced part has not been damaged.
1-3 Electrostatically Sensitive Devices (ESD) 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 components are integrated circuits and some
field-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 6. Do not remove a replacement ESD from its
charge from your body by touching a known earth protective package until you are ready to install it.
ground. Alternatively, wear a discharging wrist- Most replacement ESDs are packaged with leads
strap device. To avoid a shock hazard, be sure to that are electrically shorted together by conductive
remove the wrist strap before applying power to foam, aluminum foil or other conductive materials.
the monitor. 7. Immediately before removing the protective
2. After removing an ESD-equipped assembly, place it material from the leads of a replacement ESD,
on a conductive surface such as aluminum foil to touch the protective material to the chassis or
prevent accumulation of an electrostatic charge. circuit assembly into which the device will be
installed.
3. Do not use freon-propelled chemicals. These can
generate electrical charges sufficient to damage Caution: Be sure no power is applied to the
ESDs. chassis or circuit and observe all
4. Use only a grounded-tip soldering iron to solder or other safety precautions.
desolder ESDs.
8. Minimize body motions when handling
5. Use only an anti-static solder removal device. Some unpackaged replacement ESDs. Motions such as
solder removal devices not classified as "anti-static" brushing clothes together, or lifting your foot from
can generate electrical charges sufficient to damage a carpeted floor can generate enough static
ESDs. electricity to damage an ESD.
1-2 SyncMaster 800TFT
2 Product Specifications
2-1 Specifications
Item Description
LCD Panel TFT-LCD panel, RGB vertical stripe, normally white transmissive,
18-Inch viewable, 0.28 mm pixel pitch
Scanning Frequency Horizontal : 30 kHz to 81 kHz (Automatic)
Vertical : 56 Hz to 85 Hz (~XGA), 76 Hz (SXGA)
Display Colors 16.7 Million colors
Maximum Resolution Horizontal : 1280 Pixels @ 81 kHz
Vertical : 1024 Pixels @ 76 Hz
Input Video Signal Analog, 0.714 Vp-p ◦ Jabse Service Manual Search 2026 ◦ Jabse Pravopis ◦ onTap.bg ◦ Other service manual resources online : Fixya ◦ eServiceinfo