Samsung LW22N23N User manual

TFT-LCD TV/MONITOR

Chassis Model

VR22EO LW22N23N

Manual

SERVICE

TFT-LCD TV/MONITOR CONTENTS

1. Precautions

2. Product Specifications

3. Disassembly & Reassembly

4. Alignment & Adjustments

5. Troubleshooting

6. Exploded View & Parts List

7. Parts List

8. Block Diagram

9. Wiring Diagram

10. PCB Layout

11. Schematic Diagrams

12. Panel Description

LW22N23N 4-1

4 Alignments and Adjustments

4-1 General Alignment Instuction

1. Usually, a color TV-VCR needs only slight touch-up adjustment upon installation.

Check the basic characteristics such as height, horizontal and vertical sync.

2. Use the specified test equipment or its equivalent.

3. Correct impedance matching is essential.

4. Avoid overload. Excessive signal from a sweep generator might overload the front-end

of the TV. When inserting signal markers, do not allow the marker generator to distort

test result.

5. Connect the TV only to an AC power source with voltage and frequency as specified on

the backcover nameplate.

6. Do not attempt to connect or disconnect any wire while the TV is turned on. Make sure

that the power cord is disconnected before replacing any parts.

7. To protect aganist shock hazard, use an isolation transform.

4 Alignments and Adjustments

4-2 LW22N23N

4-2 Factory Mode Adjustments

4-2-1 Entering Factory Mode

1. To enter “Service Mode” Press the remote -control keys in this sequence :

- If you do not have Factory remote - control

- If you have Factory remote - control

4-2-2 Factory Mode Tree

- The buttons are active in the service mode.

1. Remote - Control Key : Power, Arrow Up, Arrow Down, Arrow Left

Arrow Right, Menu, Enter, Number Key(0~9)

2. Function - Control Key : Power, CH +, CH -, VOL +, VOL -,

Menu, TV/VIDEO(Enter)

4 Alignments and Adjustments

LW22N23N 4-3

4 Alignments and Adjustments

4-4 LW22N23N

4 Alignments and Adjustments

LW22N23N 4-5

4 Alignments and Adjustments

4-6 LW22N23N

4 Alignments and Adjustments

LW22N23N 4-7

4 Alignments and Adjustments

4-8 LW22N23N

* Unless otherwise specifid, do not adjust data in Factory Mode.

* Data may be changed for display improvement.

4 Alignments and Adjustments

LW22N23N 4-9

4-3 White Balance Adjustment

1. In factory mode (1, 3, 6), you can adjust the white balance.

2. As the adjustment and data values differ depending on input sources, different adjustments are

requried for RF, PC/DVI modes.

3. Optimum condition data for each mode are saved as default values. (Refer to Table 2, 3)

4. As the RF mode is applied with the same vlaues as for VIDEO and S-VIDEO, adjustment can be

made in any of RF, VIDEO and S-VIDEO modes.

Table 4-1. White Balance Setting Conditions

Table 4-2. Color Control Default Vlaue

Table 4-3. Color Control Default Vlaue

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