Hyundai ImageQuest L50A Betriebsanleitung

Multiscanning Color Monitor

TECHNICAL SERVICE MANUAL

L50A(L50C)

http://monitor.hei.co.kr

http://hyundaiQ.com

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L50A(L50C) Technical Ser ice Manual

Safety Precaution

WARNING

Service should not be attempted by anyone unfamiliar with the necessary precautions on this

monitor.

The followings are the necessary precautions to be observed before servicing.

1. When managing this monitor , cover with shield plate to avoid to scrach on LCD surface.

. When replacing a chassis in the cabinet, always be certain that all the protective devices are

put back in place, such as nonmetallic control knobs, insulating covers, shields, isolation

resistor capacitor network etc.

3. Before returning the monitor to the customer, always perform an AC leakage current check

on the exposed metallic parts of the cabinet, such as signal connectors, terminals, screw

heads, metal overlays, control shafts etc, to be sure the monitor is safe to operate without

danger of electrical shock.

General Information

1. Description

This 15" LCD color display monitor is operated in R, G, B drive mode input.

2. Operating instructions

2-1. Front

Power Switch , Menu, Select, Down, Up, DPMS (Power) LED

2-2. Rear

Input connector (AC & Signal Cable)

2-3. OSD Controls

H/V Position, Clock Phase, Brightness, Contrast, Recall,Color Control, Language, Auto

Adjust, Miscellaneous

3. Electrical Characteristic

3-1. Power Supply

AC/DC - Input Voltage : 90V~ 64V

Input Current : 1.0 A Max

Input Ferquency : 50 ~ 60Hz

- Output Voltage 1 V/5V

Output Vurrent A/ A

3-2. Video Input Signal

Level : 0.7 Vp-p analog signal(at 75 ohm termination to ground)

Polarity : Positive

3-3. Horizontal Synchronization Signal

Level : TTL High : .4V min

Low : 0.4V max

Polarity : - or +

Frequency : 31kHz ~ 60kHz

3-4. Vertical Synchronization Signal

Level : TTL High : .4V min

Low : 0.4V max

Polarity : - or +

Frequency : 56Hz ~ 75Hz

--2--

Control Description

Front View

Support Modes

LED Indicator Soft Power Switch

H Frequency

(kHz)

31.5

37.9

46.9

48.4

56.5

60.0

V Frequency

(Hz)

70.0

59.9

7 .8

60.3

75.0

60.0

70.1

75.0

Polarity

8.3

5.175

31.500

40.000

49.500

65.000

75.000

78.750

Resolution

7 0 x 400

640 x 480

800 x 600

10 4 x 768

Refresh rate

70.087

59.940

7 .809

60.317

75.000

60.004

70.069

75.0 9

Video Input Signal

Recommended signal are shown below

•Video Signal

Video level : 0 to 700mV

Polarity : positive

Video Input : RGB separated

Analog level

Sync input : H-Sync(TTL level)

V-Sync (TTL level)

•Wa eform

Video input(R.G.B)

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L50A(L50C) Technical Ser ice Manual

ACTIVE (T4)



Front Porch

(T5) Period (T1)

Sync Width (T2)

Back Porch (T3)

ACTIVE (T4)



Front Porch

(T5) Period (T1)

Sync Width (T2)

Back Porch (T3)

• H-Sync • V-Sync

55 700mV

0mV

• Signal: 56 level gray

scale

• Linear stepping:

( .73mV ~ 56 Steps)

--4--

Video Input Terminal

A 15 Pin D-sub connector is used as the input signal connector

Pin and input signals are shown in the table below.

Pin Description

D-Sub miniature connector

SIGNAL

PIN NO.

SEPARATE SYNC/

DDC 1/ B

RED

GREEN

BLUE

GND

RETURN

RED GROUND

GREEN GROUND

BLUE GROUND

N.C

LOGIC GROUND

GROUND

SDA

H-SYNC(TTL)

V-SYNC(VCLK)

15 SCL

Connecting with External Equipment

Cautions

Be sure to turn off the power of your computer before connecting the monitor.

--5--

L50A(L50C) Technical Ser ice Manual

Theory of Operation

1. AC/DC Adapter

Input voltage : 90 ~ 64 Vac, 50/60 Hz

Input current : Max 1A (Vin : 90Vac , 50Hz)

Inrush current : 15A peak (At 115Vac Max . Load)

30A peak (At 30Vac Max. Load)

2. DC/AC INVERTER

Input voltage : DC 1 V

Input current : .0A(Max)

Frequency(switching) : 40 - 80 KHz

On/off control voltage : 5.0V

3. DPMS MODE

Reference to DPMS files

--6--

Mode

Normal

Suspend

off

LED

10W

LED

Indicator

40W

Green

Orange

Unplugged 0W

Not illuminated

--7--

L50A(L50C) Technical Ser ice Manual

On Screen Controls & LED Indicator

The menu for screen setting adjustment is located in the OSD and can be viewed in one of

five languages OSD feature andmain funcrions are as follows:

The OSD adjustments available to you are listed below.

BRIGHTNESS

Adjust the brightness of the screen.

CONTRAST

Adjust the contrast of the screen.

COLOR CONTROL

Color temperature affects the tint of the image. With lower color

temperatures the image turns reddish and with higher temperatures

bluish.

There are three color settings available: Mode 1(a warm white), Mode 2(a cool white)

or USER. With the USER setting you can set individual values for red, green and blue.

H/V POSITION

H-POSITION

Adjusts the horizontal position of the entire screen image.

V-POSITION

Adjusts the vertical position of the entire screen image.

--8--

CLOCK PHASE

PHASE

Adjust the noise of the screen image.

CLOCK

Adjust the horizontal size of the entire screen image.

AUTO ADJUST

You can adjust the shape of screen automatically at the full screen pattern.

MISCELLANEOUS

RECALL

Recall the saved color data.

OSD TIMER

You can set the displayed time of OSD Menu window on the screen by using this

adjustment.

OSD POSITION

Adjust the OSD menu's horizontal or vertical position on the screen.

LANGUAGE

You can select the language in which adjustment menus are displayed.

The following languages are available : English, French, German, Italian,

Spanish, Swedish, Finnish, Danish, P

--9--

L50A(L50C) Technical Ser ice Manual

Getting Fine Picture

Step 1. At first Display, a full screen, such as, Window's background or "H" character should

be achieved by using Editor (ex: Notepad. exe)

Step 2. Adjust the screen to the center of the Display(LCD), by using the top and bottom

display controls. (i.e.Using V-Position Adjust menu)

Step 3. Adjust the screen to the center of the Display(LCD), by using the right and left

display controls. (i.e.Using Clock and H-Position adjust menu)

Step 4. Adjust the Clock-phase until the "H" Character displays clear.

Step 5. Using the Contrast. Brightness, and Color Control menu, set the color to your

preference.

Step 6. When you finish the adjustment, you can save your settings by pressing on the menu

until the OSD screen has disappeared.

Factory Setting & EEPROM Initialization Method

Factory Setting Method

- Connect the signal cable and power cable to the LCD monitor.

- Press Power switch with pressed MENU key.(Menu key + Power key).

- Then, a User can change the factory setting value in OSD menu.

- Save changed value and Turn off the power s/w.

- Turn on the power, adjust the screen.

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