Samsung 214T Service manual

SERVICE

Manual

LCD Monitor

Fashion Feature

LCD-Monitor

Chassis LS21BRBS Model 214T

- Applying MFM UI

- Applying Magic Color Pro

- Applying HDCP / PIP

- Supporting Magic Tune 4.0

- Supporting Analog / Digital / Video / S-video

Samsung Electronics Co.,Ltd.

416, Maetan-3Dong, Yeongtong-Gu, Suwon City, Gyeonggi-Do, Korea, 443-742 Printed in Korea P/N : BN82-00133T-00 URL : http://itself.sec.samsung.co.kr/

-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.

1 Precautions

1-1

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

Ser vicing 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).

Figure 1-1. Leakage Current Test Circuit

4. With the unit completely reassembled, plug the AC line cord directly into a 120V AC outlet. With the unit’s AC switch first 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 identified 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, fire and/or other hazards. Product safety is under review continuously and new instructions are issued whenever appropriate.

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 Precautions

1-2

1-2-1 General Ser vicing

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.

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 sufficient 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 classified as “anti-static” can generate electrical charges sufficient to damage ESDs.

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 the blades 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.

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 floor can generate enough static electricity to damage an ESD.

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 are integrated circuits and some field-effect transistors. The following techniques will reduce the incidence of component damage caused by static electricity.

1-2 Ser vicing 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: If unforeseen circumstances create conflict between the following servicing precautions and any of the safety

precautions, always follow the safety precautions.

1 Precautions

1-3

1-4 Installation Precautions

1. For safety reasons, more than two people are required for carrying the product.

2. Keep the power cord away from any heat emitting devices, as a melted covering may cause fire or electric shock.

3. Do not place the product in areas with poor ventilation such as a bookshelf or closet. The increased internal temperature may cause fire.

4. Bend the external antenna cable when connecting it to the product. This is a measure to protect it from being exposed to moisture. Otherwise, it may cause a fire or electric shock.

5. Make sure to turn the power off and unplug the power cord from the outlet before repositioning the product. Also check the antenna cable or the external connectors if they are fully unplugged. Damage to the cord may cause fire or electric shock.

6. Keep the antenna far away from any high-voltage cables and install it firmly. Contact with the highvoltage cable or the antenna falling over may cause fire or electric shock.

7. When installing the product, leave enough space (10cm) between the product and the wall for ventilation purposes. A rise in temperature within the product may cause fire.

1 Precautions

1-4

Memo

2 Product Specifications

2-1

2 Product Specifications

2-1 Fashion Feature

- Support Analog, Digital, Video, S-Video

- Improved Response Time by Adopting 16ms

- Support Magic Color Pro Magic Color, Color Tone, Gamma, 6-Color, Color Weakness

- Support PIP when the sources are Anaolg and Digital

- Magic Bright : 4steps used Test, Internet, Entertain. Custom

- Magictune 4.0 and Pivot software installed

- Auto Pivot :

When the monitor is rotated in 90 degree, the display LED and OSD also are autimatically rotates accordingly. This can be performed only when Magictune 4.0 and the Pivot software are running.

LCD Panel TFT-LCD panel, RGB vertical stripe, normally black transmissive,

21-Inch viewable, 0.270 (H) x 0.270 (V) mm pixel pitch

Scanning Frequency Horizontal : 31 kHz ~ 80 kHz (Automatic)

Vertical : 56 Hz ~ 75 Hz (UXGA : 60 Hz) Display Colors 16.7 Million colors Maximum Resolution Horizontal : 1600 Pixels

Vertical : 1200 Pixels Input Signal Analog / Digital / Video / S-Video

Input Sync Signal Seperate H/V sync, Composite H/V, Sync-on-Green, Automatic synchroniza

tion whitout external swith of sync type

Support Video mode : NTSC / PAL / SECAM / PAL M / PAL N / NT43 / PAL60

support DVI mode : 480i/p,720p@50Hz, 720p@60Hz , 1080i@50Hz

1080i@60Hz (Support HDCP)

Level : TTL level Maximum Pixel Clock rate 165 MHz Active Display

Horizontal/Vertical 432(H) x 324(W) mm AC power voltage & Frequency

AC 90 ~ 264 Volts, 60/50 Hz ± 3 Hz Power Consumption 63W (Max) Dimensions

Set (W x D x H) 17.5 x 9.0 x 18.0 Inches (445 x 228.5 x 457.2mm) State of stand installed Package 17.0 x 10.8 x 22.8 Inches (432 x 275 x 580 mm) State of stand pivoted Weight (Set/Package) 8.15 kg (17.9 lbs) / 10.35 kg (22.8 lbs)

Environmental Considerations

- Designs and specifications are subject to change without prior notice.

Description

Item

2-2 Specifications

2 Product Specifications

2-2

2-3 LS21BRBS feature

No Feature Feature

Operating method

Magic tune 4.0

It must be installed Magic tune 4.0 and Pivot Software to the PC

Color menu of Magictune 4.0

If Brahms turns on in some resolution for the first time, it can execute Auto adjustment automatically for the high Quality

Brahms can check the change of Source Automatically and change the source to the active Input

Brahms supports Wall mount (100mmx100mm VESA-compliant mounting interface pad.)

Brahms supports 9-Step Fine Adjustment for Gamma & Color temperature

Brahms supports 4 different Brightness Mode (Text / Internet / Entertain / Custom)

As Brahms has sensor IC for Pivot,

1) if Brahms rotates 90

2) MCU can detect the current status through sensor IC,

3) Magic tune 4.0 &Pivot Software can make change Screen to the rotated degrees automatically

Off - Returns to the original mode Demo - The screen before applying MagicColor appears on the right

and the screen after applying MagicColor appears on the left Full - Displays vivid natural color with clearness Intelligent - Displays not only vivid natural color but also

more realistic natural skin color with clearness

Auto Auto

Auto Power

on/off

Wall mount

Gamma &

Color temper-

ature

Fine Adjust

Magic Bright

Adjust the Sharpness

Sharpness

Auto Pivot

Magic Color

2 Product Specifications

2-3

2-4 Spec Comparison

2 Product Specifications

2-4

2-5 Spec Comparison to the Other Models

SDVL_MC

OEDIV

REDOCED

SDVL_MC

OEDIV

REDOCED

2 Product Specifications

2-5

2-6 Option Specification

Item Item Name CODE.NO Remark

Quick Setup Guide

BH68-00376L

BH68-00261F

BN59-00395P

3701-001219

3903-000085

Warranty Card

(Not available in all locations)

User's Guide,

Monitor Driver,

Natural Color software,

MagicTune

software

D-Sub(15 Pin)

Cable

Power Cord

BN39-00246F

DVI Cable

Memo

2 Product Specifications

2-6

3 Alignments and Adjustments

3-1

3-1 Required Equipment

The following equipment is necessary for adjusting the monitor:

 Computer with Windows 95, Windows 98, Windows NT, Windows 2000, or Windows XP.  MTI-2031 DDC MANAGER JIG

3-2 Automatic Color Adjustment

To input video, use 16 gray or any pattern using black and white.

1. Press and hold down both the MENU and the

keys at the same time for about 5 seconds.

2. A blinking display informs you that the automatic color adjustment process is completed.

3. The automatic color adjustment feature is also available in the service function.

3-3 DDC EDID Data Input

1. Input DDC EDID data when replacing AD PCB.

2. Receive/Download the proper DDC file for the model from HQ quality control department. Install the below jig (Figure 1) and enter the data.

3-4 OSD Adjustment When Replacing Panel

1. Set the Brightness and Contrast to zero, and push the MENU button more than 5 seconds. The Function OSD is displayed like Figure 2.

2. Select the Panel Information.

3. Select a panel that you want to replace with.

3-5 OSD Adjustment When Replacing Lamp Only

1. Set the Brightness and Contrast to zero, and push the MENU button more than 5 seconds. The Function OSD is displayed like Figure 2.

2. Select the Panel Information.

3. Select the upper lamp/ lower lamp.

3 Alignments and Adjustments

This section of the service manual explains how to use the RS232 JIG. This function is needed for AD board change and program memory (IC200) change.

031

Figure 1.

TI-2

DDC Manager

Parallel Connector

(25P Cable)

Connect Monitor

(Signal Cable)

3 Alignments and Adjustments

3-2

3-6 Ser vice Function Spec.

3-6-1 How to Display Service Function OSD

1. The OSD is displayed just like in 3-2.

2. To exit the service function, press the POWER key and restart the Monitor.

Figure 2. The example of service function OSD

Figure 3. The display of the Panel Information in the Function OSD

3-6-2 How to Control Service Function OSD

Use the

or buttons to select an item that you want and press the Enter button.

3 Alignments and Adjustments

3-3

3-7 Hidden Key list

3 Alignments and Adjustments

3-4

3 Alignments and Adjustments

3-5

3-8 EDID Installation with Windows Progr am

1. Execute "WinDDC.exe"

2. Click "Sys Config" Select "Station : Write station" Check "Serial No and Week : Don't change" Click "Save"

3. Click "Open" icon. Select "Connected Port #1" and Next "OK". * File Name - SM214TA1.DDC : Analog

- SM214TD1.DDC : Digital

Press enter key on your keyboard.

4. Confirm the "DDC OK".

- After Replacing the Main Board

- EDID Installation (Analog and Digital)

3 Alignments and Adjustments

3-6

Memo

4 Troubleshooting

4-1

4 Troubleshooting

Notes: 1. Before troubleshooting, setup the PC's display as below.

- Resolution: 1600 x 1200

- H-frequency: 75 kHz

- V-frequency: 60 Hz

2. If no picture appears, make sure the power cord is correctly connected.

3. Check the following circuits.

- No raster appears: Function PBA, Main PBA, IP Board

- 5V develop but no screen: Main PBA

- 13V, 5V does not develop: IP Board, Main PBA

4-1 No Power

Does proper DC 13V appear at

Pin 5, 6, 7 of CN501?

Check IP Board and Panel Cable.

Check Function ass'y.

Yes

Does the BL_EN signal appear

at R525?

Check R525.

Yes

Replace IP Board.

4 Troubleshooting

4-2

X201 oscillate properly?

4-2 No Video (ANALOG)

Replace or check related circuit.

Check signal cable connection and

power.

Yes

Is there R, G, B input at R104, R105 and R106?

Check input part.

Yes

Is there Hsync, Vsync waveform

at R112, R113?

Check input part.

Yes

Is there Hsync, Vsync waveform

at Pin 40, 41 of IC201?

Check IC201 and related circuit.

Yes

Dose proper DC 5V appear

at Pin 2 of IC501?

Check Panel Cable.

Yes

Does the output signal

appear at Pin 3, 4, 6, 7, 9, 10,

12, 13, 15~20 and 22~27

of CN602?

Check IC201, IC601 and

related circuit.

Yes

Replace LCD Panel.

4 Troubleshooting

4-3

WAVEFORMS

4 Troubleshooting

4-4

X201 oscillate properly?

4-3 No Video (DIGITAL)

Replace or check related circuit.

Check signal cable connection and

power.

Yes

Is there input data at

R133, R134, R135, R136,

R137 and R138?

Check input part.

Yes

Is there waveform

at R139, R140?

Check input part.

Yes

Is there R, G, B input at R134, R135, R136, R137 and R138?

Check Panel Cable.

Yes

Does the output signal

appear at Pin 3, 4, 6, 7, 9, 10,

12, 13, 15~20 and 22~27

of CN602?

Check IC201, IC601 and

related circuit.

Yes

Replace LCD Panel.

4 Troubleshooting

4-5

WAVEFORMS

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