Hitachi CML200UXWB Bedienungsanleitung

CAUTION:

Before servicing this chassis, it is important that the service technician read the “Safety

Precautions” and “Product Safety Notices” in this service manual.

ATTENTION:

Avant d’effectuer l’entretien du châassis, le technicien doit lire les «Précautions de sécurité»

et les «Notices de sécurité du produit» présentés dans le présent manuel.

VORSICHT:

Vor Öffnen des Gehäuses hat der Service-Ingenieur die „Sicherheitshinweise“ und „Hinweise

zur Produktsicherheit“ in diesem Wartungshandbuch zu lesen.

SERVICE MANUAL

MANUEL D'ENTRETIEN

WARTUNGSHANDBUCH

Data contained within this Service

manual is subject to alteration for

improvement.

Les données fournies dans le présent

manuel d’entretien peuvent faire l’objet

de modifications en vue de perfectionner

le produit.

Die in diesem Wartungshandbuch

enthaltenen Spezifikationen können sich

zwecks Verbesserungen ändern.

SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT

LCD MONITOR

July 2002

No. 0534

CML200UXWB

TABLE OF CONTENTS

1. Precaution and Notices ………….……………………………………… 3

1.1 Safety Precaution ………….………………………………………. 3

1.2 Product Safety Notice ……………………………………………… 3

1.3 Service Notes ………………………………………………………. 3

2. Specifications ………….……………………………...………………… 4

2.1 Monitor Specifications ……..………………………………………. 5

2.2 Timing Supported – Analog Inputs ..………………………………. 5

2.2 Timing Supported – Digital Inputs ..……………………………….. 6

3. Adjusting Your Display ...........…………………………………………. 7

4. Disassembly Instructions ……………………………………………….. 8

5. General Connection and Applications ………………………………….. 11

5.1 Connecting the Monitor to the Computer ………………………….. 11

6. Electronic Circuit Description ………………………………………….. 13

7. Electronic Block Diagram ………………………………………………. 14

8. Troubleshooting Flow Chart……………………………………………. 15

Appendix A. PCB Circuit

Appendix B. PCB Layout

AppendixC. PartsLists

Appendix D. Mechanical Disassembly

1. Precautions and Notices

1.1

Safety Precautions

Although LCD monitors are displays without high voltage as that in the CRTs, the

following precautions still should be take care of.

1) Observe all cautions and safety related notes located inside the display cabinet and on

the display chassis.

2) Operation of these displays outside the cabinet or with the cover removed involves a

shock hazard from the display backlight’s inverter. Work on the display should not be

attempted by anyone who is not thoroughly familiar with precautions necessary when

working on high voltage equipment.

3) Before returning a serviced display to the customer, a thorough safety test must be

performed to verify that the display is safe to operate without danger or shock.

1.2

Product Safety Notice

1) Many electrical and mechanical parts in this chassis provide special visual safety

protection. The protection afforded by them cannot necessarily be obtained by using

replacement components rated for higher voltage, wattage, etc.

2) Before replacing any of these components, read the parts list manual carefully. The use

of substitute replacement parts, which do not have the same safety characteristics, as

specified in the parts list may create shock, fire or other hazards.

1.3

Service Notes

1) When replacing parts or circuit boards, wrap the wires around terminals before

soldering.

2) Keep wires away from high temperature components.

3) Keep cable and their shielding in their original position so as to reduce interference.

2. Specifications

2.1

Monitor Specification

LCD Module 20.1-in, active matrix TFT, anti-glare coating, 0.255 mm pixel pitch

Display Size 408 mm x 306 mm

Viewing Angle

Left/Right

Up/Down 85°/ 85°(Typical)

85°/85°(Typical)

Luminance

Contrast Ratio 250 cd/m2(Typical)

500 : 1 (Typical)

Display Colors 16.7 million

Power Input 100 ~ 240 VAC Full Range, 50/60 Hz (External AC adapter)

Maximum power

consumption < 70W

Signal Input

Video Signal

Sync signals Analog:RGB positive 0.7VPP, 75ohm

Separate & Composite, TTL Level

Digital:TMDS 0.3Vp-p differential

Line (horizontal)

frequency Analog:31.5 kHz ~ 80 kHz / Digital :31.5kHz ~ 75kHz

Raster (vertical)

frequency Analog:56 Hz ~ 75 Hz / Digital :60Hz~75Hz

Pixel dot clock 162 MHz (maximum)

Recommended mode 1600 x 1200 @ 60 Hz

Pedestal tilt 15°forward, -5°backward

Pedestal swivel 45°right ,45°left

Dimensions

(W x H x D) 494 x 448 x 224 mm (without speaker)

Weight 11 kg

Operating Conditions

Temperature

Humidity

Altitude

5°~ 40°C at altitude 0 ~ 2000m

5°~ 30°C at altitude 2000 ~ 3000m

20% ~ 85% RH, non-condensing

3000m Max.

Storage Conditions

Temperature

Humidity -20°~ 60°C

5% ~ 85% RH

Altitude 10000m Max.

2.2

Analog Inputs

Mode

No. Mode Name

Resolution H.Freq.(KHZ)

V.Freq.(HZ) H. Polarity

V. Polarity Pixel CLK

(MHZ)

1 VGA 60HZ

640*480 31.469

59.941 －

－

25.175

2 VGA 72HZ

640*480 37.804

72.81 －

－

31.5

3 VGA 75HZ

640*480 37.5

75.0 －

－

31.5

4 SVGA 56HZ

800*600 35.156

56.25 ＋

＋

36.0

5 SVGA 60HZ

800*600 37.879

60.317 ＋

＋

40.0

6 SVGA 72HZ

800*600 48.077

72.188 ＋

＋

50.0

7 SVGA 75HZ

800*600 46.875

75.0 ＋

＋

49.5

8 XGA 60HZ

1024*768 48.363

60.004 －

－

65.0

9 XGA 70HZ

1024*768 56.476

70.069 －

－

75.0

10 XGA 75HZ

1024*768 60.023

75.029 ＋

＋

78.75

11 SXGA 60HZ

1280*1024 63.981

60.020 ＋

＋

108

12 SXGA 75HZ

1280*1024 79.976

75.025 ＋

＋

135

13 UXGA 60Hz

1600 * 1200 75.0

60 ＋

＋

162

14 MAC SVGA

640*480 35.0

66.667 －

－

30.24

15 MAC SVGA

832*624 493725

74.550 －

－

57.283

16 US TEXT

720*400 31.469

70.087 －

＋

28.322

2.3 Digital Input:

Mode

No. Mode Name

Resolution H.Freq.(KHZ)

V.Freq.(HZ) H. Polarity

V. Polarity Pixel CLK

(MHZ)

1 VGA 60HZ

640*480 31.469

59.941 －

－

25.175

2 VGA 75HZ

640*480 37.5

75.0 －

－

31.5

3 SVGA 60HZ

800*600 37.879

60.317 ＋

＋

40.0

4 SVGA 75HZ

800*600 46.875

75.0 ＋

＋

49.5

5 XGA 60HZ

1024*768 48.363

60.004 －

－

65.0

6 SXGA 60HZ

1280*1024 63.981

60.020 ＋

＋

108

7 US TEXT

720*400 31.469

70.087 －

＋

28.322

8 UXGA 60Hz

1600 * 1200 75.0

60 ＋

＋

162

Note:

The display is capable of going beyond these recommended modes.

ENGLISH

3. Adjusting Your Display

This chapter contains information about how to changing display settings for your LCD

Monitor. It is designed with an OSD menu to help you easily adjust to its optimum

performance.

Note: You must perform auto setup before making any adjustment.

Summary of Control Buttons

There are three control buttons located at the lower part of the front panel of your display:

Select: Display the On-Screen Display (OSD) “Main Menu” and selects items for user

adjustment.

Note: Hold down this key for 2 seconds will clear OSD menu.

Right( ): Move upward through the choice in the OSD submenu. If an adjustment

bar is displayed, this button increases the setting value.

Note: This key is also used as ‘direct key’ to bring-up OSD “Audio/Video”.

Left( ): Move downward through the choice in the OSD submenu. If an adjustment

bar is displayed, this button decreases the setting value.

Note: This key is also used as ‘direct key’. When the OSD “Main Menu” is inactive,

press this key will bring-up ‘Auto Setup’ submenu.

Displaying the OSD “Main Menu”

You can use the OSD features to change the screen settings of your display. To display

the OSD “Main Menu”, please press the ‘Select’ button.

Brightness

 100

4. Disassembly Instructions

To disassembly the monitor, follow the steps as below:

Face Down the Monitor.

Note:

Face the monitor down ona smooth plane with a soft material onthatplane to

protect the panel faceplate.

Hinge Cover and base Removal

As below, remove the hinge cover and the 4 screw “B” then remove the base “C”.

Back Cover Removal:

As below, after removing the base, there will be 7 screws (indicated by “D”), and remove

them. Then you can remove the back covere “E” of the monitor.

Metallic Cover Removal:

Remove 12 screws indicated as “F” from the back metallic cover. Then remove the back

metallic cover “G”.

PCB Assembly Removal:

Caution: When serving or replacing the panel, disconnect the DC power jack completely.

(a) Unplug all connected wires from the PCB.

(b)Remove 4 screws indicated as “H” from the audio board, and then remove the board

carefully.

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