Hyundai ImageQuest L70A Betriebsanleitung

Multiscanning Color Monitor

TECHNICAL SERVICE MANUAL

L70A

http://monitor.hei.co.kr

http://hyundaiQ.com

--1--

L70A Technical Service 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.

2. 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 17" 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 & DVI Cable & Video Cable & USB Cable)

2-3. OSD Controls

H/V Position, Clock (H-Size),Clock Phase, Brightness, Contrast, Recall,Color Control, Preset

mode, Language, OSD Adjust , Auto Adjust, Hue, Fleshtone. Input Select

3. Electrical Characteristic

3-1. Power Supply

AC/DC - Input Voltage : 90V~264V

Input Current : 1A (Max)

Input Ferquency : 50 ~ 60Hz

- Output Voltage 12V

Output Current 3.75A

3-2. Video Input Signal

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

Polarity : Positive or Negative

3-3. Horizontal Synchronization Signal

Level : TTL High : 2.4V min

Low : 0.4V max

Polarity : - or +

Frequency : 31kHz ~ 80kHz

3-4. Vertical Synchronization Signal

Level : TTL High : 2.4V min

Low : 0.4V max

Polarity : - or +

Frequency : 56Hz ~ 75Hz

Control Description

Front View

Support Modes

*Aualog R,G,B Input

*Digital R,G,B Input

--2--

LED In icator Soft Power Switch

Resolution

720 x 400

640 x 480

800 x 600

832 x 624

1024 x 768

1152 x 870

1280 x 1024

H Frequency

(kHz)

31.5

37.5

35.2

37.9

48.1

46.9

49.725

48.4

56.5

60.0

68.681

63.900

79.976

V Frequency

(kHz)

70.1

59.9

56.3

60.3

72.2

75.0

74.55

60.0

70.1

75.0

75.000

60.000

75.025

H Polarity

V Polarity

No.

Dot Clock

(MHz)

28.322

25.175

31.5

36.000

40.000

50.000

49.500

57.283

65.000

75.000

78.750

100.00

108.00

135.00

Resolution

640 x 480

800 x 600

1024 x 768

1280 x 1024

H Frequency

(kHz)

31.5

37.9

48.4

63.9

V Frequency

(kHz)

59.9

60.3

60.0

H Polarity

V Polarity

No.

Dot Clock

(MHz)

25.175

40.000

65.000

108.00

--3--

L70A Technical Service Manual

Video Input Signal

Recommended signal are shown below

•Video Signal

Video level : 0 to 700mV

Polarity : positive or Negative

Video Input : RGB separated

Analog level

Sync input : H-Sync(TTL level)

V-Sync (TTL level)

•Waveform

Video input(R.G.B)

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

251 252

253

254

255 700mV

0mV

• Signal: 256 level gray

scale

• Linear stepping:

(2.73mV ~ 256 Steps)

Video Input Terminal

1. Analog

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

--4--

D-Sub miniature connector

10 9876

SIGNAL

PIN NO.

SEPARATE SYNC/

DDC 1/2B

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

--5--

L70A Technical Service Manual

Pin Description

2. Digital

24 Pin DVI-D Interface connector is used as the input signal connector Pin and input signal

are shown in the table below.

Digital-Only Receptacle Connector

17 18 19 20 21 22 23 24

1514

PIN NO.

SEPARATE SYNC/

DDC 1/2B

T.MD.S Data 2-

T.MD.S Data 2+

T.MD.S Data2/4 Shield

T.MD.S Data 4-

T.MD.S Data 4+

DDC Clock

DDC Data

No Connect

T.MD.S Data1-

T.MD.S Data1+

T.MD.S Data 1/3 Shield

T.MD.S Data 3-

PIN NO.

T.MD.S Data 3+

+5V Power

Ground(for +5V)

Hot Plug Detect

T.M.D.S Data 0-

T.M.D.S Data 0+

T.M.D.S Data 0/5 Shield

T.M.D.S Data 5-

T.M.D.S Data 5+

T.M.S.D Clock Shield

T.M.D.S Clock +

T.M.D.S Clock -

SEPARATE SYNC/

DDC 1/2B

--6--

Connecting with External Equipment

Cautions

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

15 pin D-sub cable

(Analog RGB)

DVI-D cable (Digital TMDS)

Theory of Operation

1. DC/AC INVERTER

Input voltage : DC 12V

Input current : 2.0A(Max)

Output current : 6mArms(TYP)

Frequency(switching) : 60KHz(Max)

Output power : 17W(TYP)

On/off control voltage : 5.0V

2. DPMS MODE

Reference to DPMS files

--7--

L70A Technical Service Manual

Status

on Pulse Pulse Active

Blank

Pulse

off

Signal Power

Consumption

Within 3

Sec

Recovery

Time

Orange

LED

Indicator

Green

45W

Less Than 5W

H-Sync V-Sync Video

--8--

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:

* Analog OSD Control

* Digital OSD Control

1280X1024

V:60.0/H:63.9

BRIGHTNESS

1280X1024

V:60.0/H:63.9

BRIGHTNESS

--9--

L70A Technical Service Manual

OSD Adjustments

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 cool white), Mode 2(a warm

white) or USER. With the USER setting you can set individual values for red,

green and blue.

YUV COLOR

In particular, color technology allows users to make the following color

adjustment.

HUE

Adjust the hue of the video image.

FLESH TONE

Adjust the flesh Tone of the video image.

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.

AUTO ADJUST

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

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