Samsung 330TFT, 531 TFT, 331 TFT, 530 TFT User Manual

COLOR MONITOR

SyncMaster 330TFT SyncMaster 530TFT SyncMaster 331TFT SyncMaster 531TFT

Manual

SERVICE

COLOR MONITOR CONTENTS

EXIT

SAMSUNG

1. Precautions

2. Reference Information

3. Product Specifications

4. Operating Instructions

5. Disassembly & Reassembly

6. Troubleshooting

7. Exploded View & Parts List

8. Block Diagram

9. Electrical Parts List

10. PCB Diagrams

11. Wiring Diagram

12. Schematic Diagrams

Samsung Electronics Co., Ltd. July 1998 Printed in Korea Code No.: BN68-60017A

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.

3. When the chassis is operating, semiconductor heatsinks are potential shock hazards.

1-1-2 Servicing the LCD Monitor

1. When servicing the LCD Monitor, remove the static charge by connecting a 10k ohm resistor in series with an insulated wire (such as a test probe) between the chassis and the anode lead. (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 resistor-capacitor 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 unitÕs 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 safety-related 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.

SyncMaster 33*TFT/53*TFT 1-1

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

DEVICE UNDER TEST

TEST ALL

EXPOSED METAL

SURFACES

(READING SHOULD

NOT BE ABOVE 0.5mA)

LEAKAGE CURRENT

TESTER

2-WIRE CORD

ALSO TEST WITH

PLUG REVERSED (USING AC ADAPTER PLUG AS REQUIRED)

EARTH

GROUND

1-2-1 General Servicing Precautions

1. Always unplug the unitÕs 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 wriststrap 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 Òanti-staticÓ 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 instrumentÕs ground lead to the instrument chassis ground before connecting the positive lead; always remove the instrumentÕs 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 Precautions

1-2 SyncMaster 33*TFT/53*TFT

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

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: If unforeseen circumstances create conflict between the following servicing precautions and any of the

safety precautions, always follow the safety precautions.

SyncMaster 33*TFT/53*TFT 2-1

2 Reference Information

2-1 List of Abbreviations, Symbols and Acronyms

2-1-1 Abbreviations

Abbreviation Definition Abbreviation Definition

AUTO_MENB AUTO ENABLE (NEG.) AUTO_SOG SINK ON GREEN ENABLE BL_EN LCD PANEL BACK LIGHT ENABLE BRIGHT BRIGHTNESS CONTROL DAB(7:0) BLUE COLOR DATA (ODD) FROM IC305 DAG(7:0) GREEN COLOR DATA (ODD) FROM IC305 DAR(7:0) RED COLOR DATA (ODD) FROM IC305 DBB(7:0) BLUE COLOR DATA (EVEN) FROM IC305 DBG(7:0) GREEN COLOR DATA (EVEN) FROM IC305 DBR(7:0) RED COLOR DATA (EVEN) FROM IC305 DDC_SCL DDC I2C CLOCK FROM PC DDC_SDA DDC I2C DATA FROM PC DEN LVDS DATA ENABLE DFSYNCB CONTROL SIGNAL FROM IC301 TO IC305 DHCLK DOT CLOCK FOR PANEL DRIVING DHS LVDS HSYNC DREFCLK1 67MHz OSC CLK FOR IC305 DV_BLU OSD BLUE DATA DV_FBK OSD ENABLE DV_GRN OSD GREEN DATA DV_RED OSD RED DATA DVACTIV1B HSYNC FOR OSD (NEG.) DVCLK DOT CLOCK FOR OSD DVS LVDS VSYNC DVSYNCB VSYNC FOR OSD (NEG.) FSD(47:0) VIDEO DATA BETWEEN IC301 AND

IC302,IC303,IC304 HSYNC_PLL HSYNC FOR PLL INVERT INTERLACE CONTROL SIGNAL KEY1 FUNCTION KEY SIGNAL1 TO MICOM KEY2 FUNCTION KEY SIGNAL2 TO MICOM LED LED ON LVDS_DATA DATA OUTPUT FROM IC310, IC311 LVDS_EN LVDS ENABLE M_HSYNC BUFFERED MICOM OUTPUT HSYNC M_HSYNC1 MICOM OUTPUT HSYNC M_VSYNC BUFFERED MICOM OUTPUT VSYNC M_VSYNC1 MICOM OUTPUT VSYNC OSCOUT BUFFERED 24MHz CLOCK

OSCOUT1 24MHz CLOCK PANEL_EN +12V_PANEL/+5V_PANEL ENABLE PC_BLUE_IN BLUE COLOR SIGNAL FROM PC PC_GREEN_IN GREEN COLOR SIGNAL FROM PC PC_HSYNC_IN HSYNC FROM PC PC_RED_IN RED COLOR SIGNAL FROM PC PC_VSYNC_IN VSYNC FROM PC PCBLUE(7:0) BLUE COLOR DATA FROM IC101 PCCLAMP BUFFERED VIDEO CLAMP SIGNAL PCCLAMP1 VIDEO CLAMP SIGNAL PCCLK PLL CLOCK OUT FOR IC301 PCCLK2 PLL CLOCK OUT FOR IC405 PCCLK3 PLL CLOCK OUT FOR IC110 PCGREEN(7:0) GREEN COLOR DATA FROM ADC(IC101) PCRED(7:0) RED COLOR DATA FROM IC101 PCVSYNC2 BUFFERED VSYNC RESETB RESET (NEG.) RGB_HSYNC HSYNC FOR MICOM(IC401) RGB_VSYNC VSYNC FOR MICOM(IC401) SCL I2C CLOCK SCSB IC305 ENABLE SDA I2C DATA SOG_CSYNC COMPOSITE SYNC FROM SOG SOURCE_PC SELF RASTER CHECK SIGNAL SPI_MISO SERIAL INPUT DATA CONTROL SPI_MOSI SERIAL OUTPUT DATA CONTROL SPI_SCK SERIAL CLOCK SW_REG_ENB POWER ON/OFF CONTROL VAIL_CSB IC301 ENABLE VCBLNKB CONTROL SIGNAL FROM IC305 TO IC301 VCC DC 5V FOR MICOM(IC401) VCLREQB CONTROL SIGNAL FROM IC305 TO IC301 VGABLUE(7:0) NC VGAGREEN(7:0) NC VGARED(7:0) NC VGBBLUE(7:0) BLUE COLOR DATA FROM IC301 VGBGREEN(7:0) GREEN COLOR DATA FROM IC301 VGBRED(7:0) RED COLOR DATA FROM IC301

2 Reference Information

2-2 SyncMaster 33*TFT/53*TFT

Acronym Definition Acronym Definition

ABL Automatic Brightness Limits AC Alternating Current ACL Automatic Contrast Limit AFC Automatic Frequency Control ANSI American National Standards Institute CMOS Complementary Metal Oxide

Semiconductor CRT Cathode Ray Tube DC Direct Current DDC Data Display Channel DF Dynamic Focus DMM Digital Multimeter DPMS Display Power Management Signaling DVM Digital Voltmeter DY Deflection Yoke EEPROM Electrically Erasable and

Programmable Read only Memory ESD Electrostatically Sensitive Device ESF Electronic Static Field FBT Flyback Transformer FET Field Effect Transistor FH Horizontal Frequency FS Fail Safe FV Vertical Frequency GD Geometric Distortion

H/V Horizontal/Vertical HV High Voltage I/O Input/Output IC Integrated Circuit LED Light Emitting Diode MAC Macintosh MOFA Mask Outside Frame Assembly OCP Over Current Protection OP AMP Operational Amplifier OSD On Screen Display P-P Peak to Peak PCB Printed Circuit Board PLL Phase Locked Loop PWM Pulse Width Modulation SMPS Switch Mode Power Supply SVGA Super Video Graphics Array TP Test Point UL Underwriters Laboratories USB Universal Serial Bus VESA Video Electronics Standard

Association VGA Video Graphics Array VR Variable Registor W/B White Balance

2-1-2 Acronyms

2-1-2 Symbols

Hot Ground

Cold Ground

Provides special safety considerations

3 Product Specifications

3-1 Specifications

LCD Panel TFT-LCD panel, RGB vertical stripe, normaly white, 15-Inch viewable,

0.297 (H) x 0.297 (V) pixel pitch, 13.3-Inch viewable, 0.264 (H) x 0.264 (V) pixel pitch

Scanning Frequency Horizontal : 30 kHz to 61 kHz (Automatic)

Vertical : 50 Hz to 75 Hz (Automatic) Display Colors 16.7 Million colors Maximum Resolution Horizontal : 1024 Pixels

Vertical : 768 Pixels Input Video Signal Analog, 0.714 Vp-p ± 5% positive at 75 Ω, internally terminated Input Sync Signal Type: Seperate H/V sync, Composite H/V, Sync-on-Green, automatic synchronization

without external switch of sync type

Level: TTL level Maximum Pixel Clock rate 80 MHz Active Display 13.3”: 270.3 mm / 207.8 mm

Horizontal/Vertical 15”: 304.1 mm / 228.1 mm AC power voltage & Frequency AC 90 to 264 Volts, 60/ 50 Hz ± 3 Hz Power Consumption 13.3”: 40 W (max.), 15”: 45 W (max.) Dimensions 13.3” 15”

Unit (W x D x H) 13.9x7.7x15.6 Inches (354.3 x 195.6 x 395 mm) 15.9x7.7x16.5 Inches (404 x 196.6 x 418.7 mm) Carton (W x D x H) 17.9 x 11.1 x 19.2 Inches (455 x 282 x 488 mm) 18.7 x 11.1 x 20.1 Inches (475 x 282 x 510 mm)

Weight (Net/Gross) 13.3”: 6.4 kg / 8.0 kg, 15”: 7.5 kg / 9.5 kg

Environmental Considerations Operating Temperature : 50°F to 104°F (10°C to 40°C)

Humidity : 10 % to 80 %

Storage Temperature : -13°F to 113°F (-25°C to 45°C)

Humidity : 5 % to 95 % Audio Characteristics • Audio Characteristics

• Built-in Microphone: High-sensitivity condenser microphone (mono)

• Audio input: Left/Right Stereo phone jack, 0.7 Vrms

• Sound output: 1 W (left) + 1 W (right)/THD 1% at 8ohm

• Frequency response: 80 Hz~20 kHz (at –3dB)

• Headphone: Max 50mW output (3.5-pi jack)

• Speaker: Internal semi Dome (8ohm x 2)

• SyncMaster 33*TFT/53*TFT complies with SWEDAC (MPR II) recommendations for reduced electromagnetic fields.

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

SyncMaster 33*TFT/53*TFT 3-1

Item Description

16 ~26 GND GND GND

3 Product Specifications

3-2 SyncMaster 33*TFT/53*TFT

3-2 Pin Assignments

Sync Type

Pin No.

15-Pin Signal Cable Connector

Separate Composite Sync-on-green

Sync-on-green

1 2 3 4 5 6 7 8

9 10 11 12 13 14 15

Red Green Blue GND GND (DDC Return) GND-R GND-G GND-B No Connection GND-Sync/Self Test GND DDC Data H-Sync V-Sync DDC Clock

Red Green Blue GND GND (DDC Return) GND-R GND-G GND-B No Connection GND-Sync/Self Test GND DDC Data H/V-Sync Not Used DDC Clock

Red Green + H/V Sync Blue GND GND (DDC Return) GND-R GND-G GND-B Not Used GND-Sync/Self Test GND DDC Data Not Used Not Used DDC Clock

Sync Type

Pin No.

26-Pin Signal Cable Connector

Separate Composite

9 10 11 12 13 14 15

Red Green Blue GND GND (DDC Return) GND-R GND-G GND-B No Connection GND-Sync/Self Test GND DDC Data H-Sync V-Sync DDC Clock

Red Green Blue GND GND (DDC Return) GND-R GND-G GND-B No Connection GND-Sync/Self Test GND DDC Data H/V-Sync Not Used DDC Clock

Red Green + H/V Sync Blue GND GND (DDC Return) GND-R GND-G GND-B Not Used GND-Sync/Self Test GND DDC Data Not Used Not Used DDC Clock

31.469

31.778

3.813

1.589

26.058

0.318

70.086

14.268

0.064

1.716

11.504

0.985

25.175

Positive Negative Separate

fH (kHz) A µsec B µsec C µsec D µsec E µsec fV (Hz) O msec P msec Q msec R msec S msec Clock

Frequency (MHz)

Polarity H.Sync

V.Sync Remark

IBM

3 Product Specifications

SyncMaster 33*TFT/53*TFT 3-3

QRS

Video

Sync

Horizontal

Vertical

CDE

Video

Sync

Separate Sync

3-3 Timing Chart

This section of the service manual describes the timing that the computer industry recognizes as standard for computer-generated video signals.

C D

Video

Sync

Video

Q R S

A : Line time total B : Horizontal sync width O : Frame time total P : Vertical sync width C : Back porch D : Active time Q : Back porch R : Active time E : Front porch S : Front porch

VGA3/60 Hz

640 x 480

640/72 Hz 640 x 480

640/75 Hz 640 x 480

800/56 Hz 800 x 600

800/60 Hz 800 x 600

VGA1/70 Hz

640 x 350

VGA2/70 Hz

720 x 400

Table 3-1. Timing Chart

31.469

31.777

3.813

1.589

26.058

0.318

70.087

14.268

0.064

0.858

13.155

0.191

28.322

Negative

Positive

Separate

31.469

31.778

3.813

1.589

26.058

0.318

59.940

16.683

0.064

0.794

15.761

0.064

25.175

Negative Negative Separate

37.861

26.413

1.270

3.810

20.825

0.508

72.809

13.735

0.079

0.528

13.100

0.026

31.500

Negative Negative Separate

37.500

26.667

2.032

3.810

20.317

0.508

75.000

13.333

0.080

0.427

12.800

0.027

31.500

Negative Negative Separate

35.156

28.444

2.000

3.556

22.222

0.667

56.250

17.778

0.057

0.626

17.067

0.028

36.000

Positive Negative Separate

37.879

26.400

3.200

2.200

20.000

1.000

60.317

16.579

0.106

0.607

15.840

0.026

40.000

Positive Positive

Separate

Mode

VESA

Timing

3 Product Specifications

3-4 SyncMaster 33*TFT/53*TFT

48.077

20.800

2.400

1.280

16.000

1.120

72.188

13.853

0.125

0.478

12.480

0.770

50.000

Positive Positive

Separate

fH (kHz) A µsec B µsec C µsec D µsec E µsec fV (Hz) O msec P msec Q msec R msec S msec Clock

Frequency (MHz)

Polarity H.Sync

V.Sync Remark

VESA

1024/60 Hz 1024 x 768

1024/70 Hz 1024 x 768

1024/75 Hz 1024 x 768

640/67 Hz

60 x 480

832/75 Hz 832 x 624

800/72 Hz

800 x 600

800/75 Hz

800 x 600

Table 3-1. Timing Chart Continued

46.875

21.333

1.616

3.232

16.162

0.323

75.000

13.333

0.064

0.448

12.800

0.021

49.500

Positive Positive

Separate

48.363

20.677

2.092

2.462

15.754

0.369

60.004

16.666

0.124

0.600

15.880

0.062

65.000

Negative Negative Separate

56.476

17.707

1.813

1.920

13.653

0.320

70.069

14.272

0.106

0.513

13.599

0.053

75.000

Negative Negative Separate

60.023

16.660

1.219

2.235

13.003

0.203

75.029

13.328

0.050

0.466

12.795

0.017

78.750

Positive Positive

Separate

35.000

28.571

2.116

3.175

21.164

2.116

66.667

15.000

0.086

1.114

13.714

0.086

30.240

Negative Negative Separate

49.726

20.110

1.117

3.910

14.524

0.559

74.551

13.414

0.060

0.784

12.549

0.020

57.284

Negative Negative Separate

Mode

MAC.

Timing

QRS

Video

Sync

Horizontal

Vertical

CDE

Video

Sync

Separate Sync

C D

Video

Sync

Video

Q R S

A : Line time total B : Horizontal sync width O : Frame time total P : Vertical sync width C : Back porch D : Active time Q : Back porch R : Active time E : Front porch S : Front porch

EXIT

SyncMaster 33*TFT/53*TFT 4-1

4 Operating Instructions

4-1 Control and Connectors

4-1-1 SyncMaster 331TFT/531TFT

EXIT

SAMSUNG

EXIT

DC 12V

Figure 4-2. Rear View

Figure 4-1. Front View and Control

4 5

1 Power Button

Power Indicator

EXIT Button3

Location Symbol Description

Table 4-1. Front Panel Controls

Signal Cable

Power Port

Up / Down / + / – Buttons4

MENU Button5

4 Operating Instructions

4-2 SyncMaster 33*TFT/53*TFT

EXIT

ON/OFF VOLUME

MIN MAX

BASS

MIN MAX

TREBLE

MIN MAX

MIC

ON OFF

EXIT

SAMSUNG

ON/OFF VOLUME BASS

TREBLE

MIC

MIN MAX MIN MAX MIN MAX

ON OFF

EXIT

SAMSUNG

MIC

AUDIO

OUT

Figure 4-4. Rear View

Figure 4-3. Front View and Control

1 2

Power Button Power Indicator Menu Button Exit Button

Up / Down / + / – Buttons

Audio On / Off & Volume Buttons

Bass Button

Treble Button

Microphone On / Off Button

Microphone

Amplified Stereo Speakers

Location Symbol Description

Table 4-2. Front Panel Controls

Power port

Microphone out port

Audio in port

Headphone jack

External microphone jack

4-1-2 SyncMaster 330TFT/530TFT

This monitor has no Òservice onlyÓ micom controls. Should there be a problem with the microprocessor, replace the entire circuit board. There are, however, user accessible adjustment features that are described below.

This monitor has factory preset display settings for each of the signals listed in the standard display modes Timing Chart (see pages 3-3 and 3-4). As a result, when the monitor senses one of the standard signal timings, it automatically adjusts to an optimum size and position.

However, the user may wish to adjust the monitor to their own preferred settings rather than use those preset at the factory. The monitor saves up to 16 user defined settings.

4-2-1 OSD Window

The adjustable features described below all use the on-screen menu system.

1. Push the ↵ button to open the display the on-

screen menu.

2. Use the or button to change an

adjustment icon, use the ↵ button to highlight

an adjustment icon, then use the + or Ð buttons to make the adjustments.

3. To select another adjustment on the same screen, use the or button to move to the next selection.

4. When you are done making adjustments on an adjustment icon, push the EXIT button.

5. When you are done making all adjustments, push the EXIT button.

Table 4-3 shows the adjustment types and their icons.

4 Operating Instructions

SyncMaster 33*TFT/53*TFT 4-3

4-2 Microprocessor Controls and Functions

Brightness Contrast

Auto Reset

Auto Adjustment Geometry Color

Misc.

Language Menu Position Menu Display Time

Display Mode

0 ~ 100 0 ~ 100

No/Yes No/Yes No/Yes

x1, x2, x4, x8 Normal/Expand

Color Temperature

Mode1 Mode2 Mode3

0 ~ 100 0 ~ 100 0 ~ 100

Color Control

Red Green Blue

Image Size

Zoom Display Size

0 ~ 100 0 ~ 100

Image Lock

Fine Coarse

Position

Horizontal Vertical

IBM VGA1/70 Hz 0-100

740-860

VGA2/70 Hz 0-100

840-960

VGA3/60 Hz 0-100

740-860

VESA SVGA/56 Hz 0-100

964-1084

SVGA/60 Hz 0-100

996-1116

XGA/60 Hz 0-100

1284-1404

Icon Description Adjustment Range Icon Description Adjustment Range

Table 4-3. Available adjustments

This monitor has a built-in power management system called PowerSaver. This system saves energy by switching your monitor into an off mode when it has not been used for an certain amount of time.

This system operates with a VESA DPMS compliant video card installed in your computer. You use a software utility installed on your computer to set up this feature. See the table below for details.

Note 1: This monitor automatically returns to

normal operation when horizontal and vertical sync return. This occurs when you move the computer's mouse or press a key on the keyboard.

Note 2: This monitor is EPA E

NERGY STAR

compliant and NUTEK compliant when used with a computer equipped with VESA DPMS functionality. If your computer system cannot support a display power management function, you can purchase an optional DPMS software program to enable the power saving function. Please contact Samsung or your dealer for more information.

Note 3: For energy conservation, turn your

monitor OFF when it is not needed, or when leaving it unattended for long periods.

Note 4: Audio Part is operated separately by

control button.

4 Operating Instructions

4-4 SyncMaster 33*TFT/53*TFT

4-3 Audio Controls

Your LCD monitor provides four audio control buttons located on the front of the stand.

4-3-1 Audio Adjustments

To access the on/off, volume, bass and treble functions push the appropriate blue control button until it pops out then turn it to the right or left to adjust the function.

Function

Name

Audio On/Off

and Volume

Effect of Control Movement

Left Right

Off

Decrease volume Decrease Low sounds Decrease high sounds

Bass

Treble

Increase volume

Increase low sounds

Increase High sounds

Function

Name

Audio On/Off

and Volume

Effect of Control Movement

In Out

Off On

Your LCD monitor includes an internal microphone which you can turn On or Off using the rightmost control of the Audio controls.

4-4 Power Management System

Table 4-4. Display Power Management Signaling (DPMS); 13.3”

State

Items

Normal

Operation

Horizontal Sync Vertical Sync Video

Power Indicator

Power Consumption/hr (13.3”)

Power Consumption/hr (15”)

Active Active Active

Green Amber

Amber Blinking (0.5 sec)

Amber

Blinking

(1 sec)

40 W (max.)

30 W

(nominal)

45 W (max.)

35 W

(nominal)

Less than

5 W

Less than

5 W

Less than

5 W

Less than

5 W

Less than

5 W

Less than

5 W

Inactive

Active

Blanked

Active Inactive Blanked

Power saving function EPA/NUTEK

Stand-By

Mode

Suspend Mode

Position A

Power Off Mode

Position B

Inactive Inactive Blanked

5-1-1 Removing the Stand

1. Carefully push the edge of the hinge cap with a ÔÐÕ screw driver until the opposite end of the hinge cap releases.

2. Remove 4 screws in the hinge area.

3. Push the stand to the left side to release the hinge.

Caution:Be careful. Signal cable and power

cable are still attached to the monitor.

4. Lift the stand away from the monitor until Vesa Cover is completely visible. And pry it off the back of the monitor.

5. Disconnect Power Cord and Signal Cable.

5-1-2 Main Body Disassembly

1. Remove the 4 screws on the Rear Cover. (Marked: )

2. Remove Rear Cover from the Front Cover.

3. Remove 6 screws on the Shield. (Marked: )

4. Disconnect Inverter wire, Function PCB wire and Interface wire.

5. Remove the Main PCB Assembly.

SyncMaster 33*TFT/53*TFT 5-1

5 Disassembly and Reassembly

This section of the service manual describes the disassembly and reassembly procedures for the SyncMaster 33*TFT/53*TFT monitors.

WARNING: This monitor contains electrostatically sensitive devices. Use caution when handling

these components.

5-1 Disassembly

Cautions:1. Disconnect the monitor from the power source before disassembly.

2. Follow these directions carefully; never use metal instruments to pry apart the cabinet.

Figure 5-1

Figure 5-3

Figure 5-4

Figure 5-2

6. Remove 4 screws on the Rear Panel Bracket. (15Ó : 6 screws)

7. Remove the Bracket Assembly from the Front Cover.

8. Remove 1 screw on the Power PCB.

9. Remove Function PCB from locking area of Function Knob.

10. Remove 4 screws on the Shield of Panel.

11. Remove the Shield.

12. Disconnect the jack between Panel and Inverter PCB.

13. Remove Rear Bracket.

14. Remove 2 screws between Rear Bracket and Inverter PCB.

15. Remove the Interface wire on the Rear Side of Panel.

5-1-3 Stand Disassembly

1. Stand the stand assembly with the base close to you.

5 Disassembly and Reassembly

5-2 SyncMaster 33*TFT/53*TFT

Figure 5-5

Figure 5-6

Figure 5-7

Figure 5-8

+ 36 hidden pages