Hyundai L17T Schematic

TFT LCD COLOR MONITOR

TECHNICAL SERVICE MANUAL

L17T

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L17T Technical Service Manual

1 FORWORD

This document defines design and performance requirements for Hyundai 17.0" On Screen Display
Color TFT LCD monitor L17T. It is capable of displaying maximum 1,280 horizontal dots and 1024
vertical lines resolution image.
It also offers Power Management and DDC2B features according to VESA proposal.

2 GENERAL DESCRIPTION

The monitor described in the followings is based on a multi- scanning, digital control display, 17.0
inches diagonal. The monitor is intended to be a finished product, basically a display device mounted
inside a plastic enclosure which will provide the aesthetic, ergonomic and safety requirements.

2.1 LCD Descriptions

¬ Model Name : M170EN05
¬ Display Area : 337.92(H) x 270.336(V) mm
¬ Drive system : A - Si TFT active matrix
¬ Display Colors : 262K Colors
¬ Number of pixels : 1280 x 1024
¬ Module Size : 358.5 (H) x 296.5(V) x 19.0 typ. (D) mm
¬ Weight : 2,000g (TYP.)
¬ Contrast ratio : 450:1 (Typ.)
¬ Luminance : 260cd/m

'

(Typ)

Control Description

Front View

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Power Switch

LED Indicator

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L17T Technical Service Manual

ELECTRICAL CHARACTERISTICS

3.1 Analog R.G.B Input

The input signal shall be applied to the display device through a signal cable, which must be
intended as part of the monitor.
A signal connector shall be a shielded 15pin D- Sub connector and signal cable shall be Black or
White, 1.50

¡

0.05 meter long.

The interfacing method described above requires 7 input lines :
1 - Red (red video)

2 - Green (green video)
3 - Blue (blue video)
4 - H Sync (horizontal synchronization)
5 - V Sync (vertical synchronization)
6 - SDA
7 - SCL

The reference video controller (the device used for adjustment and test) will guarantee the
performances described below (measured on the output connector).

Video signals on 75 ohm termination to the ground
Red, Green & Blue Video (refer to Fig.3.01)
Level : 0 to 0.700 Vpp
Polarity : Positive

700mV

2.74mV

Blanking

Fig. 3.01 - Video Signal

Synchronization signals
Polarity : Positive or Negative
This monitor shall not be demaged by improper sync timing and pulse duration, absence of sync, or

abnormal input amplitude (video and/or sync too large too small).

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3.1.1 Horizontal Scan
Pixel Sampling Frequency : 25.056 ~ 135MHz
H sync Frequency : 31.0 ~ 80 KHz

3.1.2 Vertical Scan
Scanning Frequency : 56 ~ 75.0Hz

3.1.3 Timing
This monitor shall be capable of displaying following video timing chart.

* Timing Chart

Display Time (T4)

Front Porch (T5) Back Porch (T3)

Sync Width (T2) High Level : 2.4V min

Time Total (T1) Low Level : 0.4V max

Fig. 3.02 - H-Sync

Display Time (T4)

Sync Width (T2)

Front Porch (T5

)

Back Porch (T3)

Time Total (T1)

Fig. 3.03 - V-Sync

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L17T Technical Service Manual

3.1.4 Support Modes

No. Resolution

H Frequency

(kHz)

Vfreq

(Hz)

H

polarity

V

polarity

Dot Clock

(MHz)

1 720 x 400 31.5 70.1 0 1 28.322
2 640 x 480 31.5 59.9 0 0 25.175
3 640 x 480 37.5 75 0 0 31.500
4 800 x 600 35.2 56.3 1 1 36.000
5 800 x 600 37.9 60.3 1 1 40.000
6 800 x 600 48.1 72.2 1 1 50.000
7 800 x 600 46.9 75.0 1 1 49.500
8 832 x 624 49.725 74.55 0 0 57.283

9 1024 x 768 48.4 60.0 0 0 65.000
10 1024 x 768 56.5 70.1 0 0 75.000
11 1024 x 768 60.0 75.0 1 1 78.750
12 1152 x 864 67.5 75 1 1 108.000
13 1280 x 1024 63.9 60.0 1 1 108.000
14 1280 x 1024 80.0 75 1 1 135.000

Table 3-01. Support Modes

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3.1.5 Preset Timing

The timing shown in the following table will be factory preset for display.

-

Preset-mode table

The timing shown in the following table will be factory preset for display.

Horizontal Pixel 720 640 640 800 800 800 800 832 1024 1024 1024 1152 1280 1280

Pixel Clock MHz

28.322 25.175 31.500 36.000 40.000 49.500 50.000 57.283 65.000 75.000 78.750 108.00 108.00 135.00

Frequency kHz

31.469 31.469 37.500 35.156 37.879 46.875 48.077 49.725 48.363 56.476 60.023 67.500 63.981 79.976

Period (T1)

§`

31.777 31.778 26.667 28.444 26.400 21.333 20.800 20.111 20.677 17.707 16.660 14.815 15.630 12.504

Active (T4)

§`

25.422 25.422 20.317 22.222 20.000 16.162 16.000 14.524 15.754 13.653 13.003 10.667 11.852 9.481

Sync Width (T2)

§`

3.813 3.813 2.032 2.000 3.200 1.616 2.400 1.117 2.092 1.813 1.219 1.185 1.037 1.067

Back Porch (T3)

§`

1.907 1.907 3.810 3.556 2.200 3.232 1.280 3.910 2.462 1.920 2.235 2.370 2.296 1.837

Front Porch (T5)

§`

0.636 0.636 0.508 0.667 1.000 0.323 1.120 0.558 0.369 0.320 0.203 0.593 0.444 0.119

Vertical Lines 400 480 480 600 600 600 600 624 768 768 768 864 1024 1024

Frequency Hz

70.087 59.940 75.000 56.250 60.317 75.000 72.188 74.55 60.004 70.069 75.029 75.000 60.020 75.025

Period (T1)

§´

14.268 16.683 13.333 17.778 16.579 13.333 13.853 13.414 16.666 14.272 13.328 13.333 16.661 13.329

Active (T4)

§´

12.711 15.253 12.800 17.067 15.840 12.800 12.480 12.549 15.880 13.599 12.795 12.800 16.005 12.804

Sync Width (T2)

§´

0.064 0.064 0.080 0.057 0.106 0.064 0.125 0.060 0.124 0.106 0.050 0.044 0.047 0.038

Back Porch (T3)

§´

1.112 1.048 0.427 0.626 0.607 0.448 0.478 0.784 0.600 0.513 0.466 0.474 0.594 0.475

Front Porch (T5)

§´

0.381 0.318 0.027 0.028 0.026 0.021 0.770 0.020 0.062 0.053 0.017 0.015 0.016 0.013

Interlaced Y /N

N N N N N N N N N N N N N N

H

- - - + + + + - - - + + + +

Sync Polarity

V

+ - - + + + + - - - + + + +

Table 3-02. Preset-Timings

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L17T Technical Service Manual

3.1.6 Brightness

Definitions :

Brightness

This control is mainly intended as a raster luminance adjustment.

Setting of User Controls Luminance Limits

Brightness

Contrast

Data/Active area

Min Min

*

Max Max

180 cd/m

2

Table 3.03. Luminance Limits
Legend :
* Don’t care
Full White screen @ 700mV video level, 1280x1024 resolution at
H : 64kHz, V : 60Hz

The measurement shall be executed after warming-up time during 30 minutes in a dark

room ( Ambient luminance 10 lux, temperature 25

¡C

)

≤

≤

O

O

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3.2 Composite Video Input
The characteristics of video input composite are shown in Table 3.04
Signal Type Composite Video
Signal Level 1.0 Vpp
Connector Type RCA jack
Termination

75

Table 3.04 Video Input Composite

3.3 Separate Video Input (SVHS)
The characteristics of video input separate are shown in Table 3.05
Signal Type S-Video (Y/C)
Luma Level 1.0 Vpp
Chroma Level 0.286 Vpp(Reference Burst)
Connector Type 4-pin mini-DIN
Termination

75

Table 3.05 Video Input Separate

3.4 Input Formats
The Composite, YC Video input formats are shown in Table 3.06

VIDEO MODES

Mode Re solution Totoal

Normal

H-Freq(Khz)

Normal

V_Freq(Hz)

Normal

Pixel

Clock(Mhz)

NTSC Composite/YC

720x480

@

59.94Hz

858x525 15.734 59.940 13.500

PAL composite/YC

720x580

@

50Hz

864x625 15.625 50.000 13.500

Table 3.06 Composite, YC Input Formats

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L17T Technical Service Manual

3.5 TV Input

3.5.1 NTSC

i APPLICATION

- Receiving System : ( NTSC STANDARD SYSTEM )

- Channel VHF Low BAND : 2(55.25MHz) ~ H(163.25MHz)

High BAND : I(169.25MHz) ~ W+26(451.25MHz)
UHF BAND : W+27(457.25MHz) ~ 78(855.25MHz)

- Intermediate Frequeny PIF : (45.75)MHz
CIF : (44.83)MHz

SIF : (41.25)MHz

- Input Impedance : UHF/VHF Terminal (75) Y , Unbalanced

- Output Impedance : ViDEO : C.V.B.S

AUDIO : -

IF : SECOND IF

- Band Chang – Over System : (PLL Control System)

- Tuning System : (Electronic Tuning System With PLL)

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3.5.2 PAL

- APPLICATIONS

-Receiving System : ( PAL B/G+I+D/K + SECAM L/L’ STANDARD SYSTEM )

- Channel VHF Low BAND : E2(48.25MHz) ~ S10(168.25MHz)

High BAND : E5(175.25MHz) ~ S41(463.25MHz)
UHF BAND : E21(471.25MHz) ~ E69(855.25MHz)

- Intermediate Frequency PIF : PAL B/G/I/D/K, SECAM L 38.90MHz
SECAM L’ 33.90MHz
CIF : PAL B/G/I/D/K, SECAM L 34.47MHz
SECAM L’ 38.15 / 38.3MHz
SIF : PAL B/G 33.4MHz, PAL I 32.9MHz
PAL D/K, SECAM L 32.4MHz
SECAM L’ 40.4MHz

- Input Impedance : UHF/VHF Terminal (75)Y, Unbalanced

- Band Change – Over System : PLL Control System

- Tuning System : Electronic Tuning System With PLL

- Applicable Standard

Complies with European Regulations on Radiation, Signal handling and Immunity

CENELEC EN55020, EN55013

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L17T Technical Service Manual

3.6 Audio System
This monitor has a audio system including two micro loudspeakers .
Each of two micro loudspeakers has a 2W(Max.) output power .
This system also supports a headphone (earphone) output.

3.6.1 Audio Amplifiers

- 2W+2W Amplifier with DC Volume Control (for two micro loudspeakers)
R

L

=8 @THD=10% Vcc=14V (min. 10V, max. 18V)

3.6.2 Speaker

- Micro Loudspeaker Spec.
Normal impedance 8 15% at 1.0V 1.5KHz
Resonance Freq. 550Hz ±± 110Hz at 1.0V

Freq. Range fo ~ 20KHz
Power Rating. Normal 1.0W /Peak 2.0W

3.6.3 Audio System Specification

· Audio Amplifier Vcc=12V

· Audio Signal Input : < -10.0dB (Vrms=300mV) Max

· Audio Output : 1.0W Max (1ch) @THD=5% (Maximum Input)

3.7 Power Requirements

This display device shall maintain the specified performances in the range described below :

Frequency 50 / 60Hz
Voltage 90 ~ 264Vac RMS
Power On/Off time > 0.3 sec

The following consumption requirements shall be met ;
Power Consumption : 40W (max absolute value)
Current consumption : < 1.0 Aac RMS



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3.8 Power Management

3.8.1 Analog Signal
The monitor requires a signal based on VESA DPMS (Display Power Management Signaling)
proposal, and runs in three stages ;

On : Normal Operation
Off : Non Operation

This monitor shall comply with the following specifications.

Signals Power Recovery LED

State H- Sync V- Sync Video Consumption time Description

On Pulses Pulses Active 40W - Green On

Off no pulses no pulses Blanked Less than Within Orange On

3.5W 3 sec

Table 3.07 - Power Management

3.8.2 Video Signals ( S-Video,Composite Video)

There is no definition of power management for Video signals.

3.8.3 TV Signal

There is no definition of power management for TV signals.

3.8.4 Warm - Up Time
The warm - up time shall be 30 minutes minimum. At the end of the warm- up period, no adjustment
of service shall be necessary to cause the display to meet the requirements contained herei n. After

a warm- up time of 30 minutes, the display shall produce a usable image. Repetitive powe r

ON/OFF cycles must be possible with a minimum switch- off time of about 3 sec.

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L17T Technical Service Manual

4 USER INTERFACE

4.1 User Controls
This display device shall have following On- Screen Display controls.

A) User Control Panel

-

Source

-

Volume

-

Menu

-

Power

-

Select

-

Down

-

Up

B) Control Parameter (PC Mode)

-

Brightness

-

Contrast

-

Color Control

-

Miscellaneous

-

Audio

-

Auto Adjust

- Language

- H-V. Position

- Clock Phase

- Source

C) Control Parameter (S-Video, Video, TV Mode)

-

Brightness

-

Contrast

-

Image Adjust

-

Miscellaneous

-

Audio

- Language

- ( TV )

- Source

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4.2 On screen Display Controls
By pressing Menu button, OSD menu is activated. The selected item is expressed by a highlight
Icon and when ever button or button is pressed, a highlight icon is changed from side to side.
And by pressing the select button, an item is selected and activated. If any button isn’t pressed
during OSD setting time, the adjusted value is saved and OSD menu is disappeared.

4.2.1 Brightness and contrast
Brightness or Contrast is showed by pressing the menu button and selected by pressing
the select button.

4.2.2 Color Control
The color control(color temperature) selecting by pressing menu button is following
modes, mode1, mode2 and user modes. By selecting User mode, a user can

control a R- G- B gain.

4.2.3 Miscellaneous

- Recall
Return to Factory adjustment condition.
Change four parameters -> Brightness, Contrast, Color, Audio

- OSD Timer and OSD Position
By this menu, a user can control a location of OSD on screen and the display time of OSD
menu. OSD Position is showed and selected by pressing the select button.

4.2.4 Audio

- Volume : By this menu, a user can control the audio volume.

- Sound off : By this menu, a user can control the audio on/off.

- Treble : By this menu, a user can control the treble gain(

¡

14dB,15step).

- Base : By this menu, a user can control the base gain(

¡

14dB,15step).

4.2.5 AUTO Adjust

If you have done wrong selection at controlling this screen, you can use this menu.

Automatically, if you select this key, this monitor will make a optimum screen.
In order to get the optimized result of this function, display the white background or bright
gray level image.

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L17T Technical Service Manual

4.2.6 Language
By pressing LANGUAGE in main menu, a user can select one of 10 languages, English,
Spanish, German, French, Italian, Swedish, Finnish, Danish, Portuguese, Dut ch.
To select a language must press Select button.

4.2.7 H-V. Position

Horizontal (Vertical) Position is showed by pressing the menu button and selected by
pressing the select button.
To move the screen for the right side or the left side ( upward or downward) , and
button is used.

4.2.8 Clock Phase

1) Phase : This menu adjusts the PLL parameter to synchronize the PLL clock

2) Clock : This menu adjusts the image clock.

4.2.9 Source
This menu used to choose the desired input signal source.
There are four available signal source.

-

Analog RGB : 15 pin D-sub, analog signal

-

S-Video : MINI DIN, Separate video signal

-

Composite : RCA Jack, Composite video signal

-

TV : NTSC, PAL

4.3 Video ( T V ) User Control

Brightness or Contrast is showed by pressing the menu button and selected by pressing
the select button.

4.3.2 Image Adjust

- Saturation : By this menu, a user can control the saturation of the video image.

- Tint : By this menu, a user can control the tint of the video image

- Sharpness : By this menu, a user can control the sharpness of the video image

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4.3.3 Miscellangeous

- Recall
Return to Factory adjustment condition.
Change four parameters -> Brightness, Contrast, Image, Audio

- OSD Timer and OSD Position
By this menu, a user can control a location of OSD on screen and the display time of OSD
menu. OSD Position is showed and selected by pressing the select button.

4.3.4 Audio

- Volume : By this menu, a user can control the audio volume.

- Sound off : By this menu, a user can control the audio on/off.

- Treble : By this menu, a user can control the treble gain(

¡

14dB,15step).

- Base : By this menu, a user can control the base gain(

¡

14dB,15step).

4.3.5 Language
By pressing LANGUAGE in main menu, a user can select one of 10 languages, English,
Spanish, German, French, Italian, Swedish, Finnish, Danish, Portuguese, Dut ch.
To select a language must press Select button.

4.3.6 ( T V )

- CH Searching : By selecting country on the screen, this program enable to search for the

channels automati cally.
If cable(Air/CATV) is disconn ected or inap propriate country is selected,
it may be operated improperly.

- CH Edit : By this menu, a user can edit the TV channel (add channel / delete channel).

- CH Fine Tune : By this menu, a user can tune the TV channel finely.

- TV Input : By this menu, a user can select the TV channel (Air / Cable).

4.3.7 Source

This menu used to choose the desired input signal source.
There are four available signal source.

-

Analog RGB : 15 pin D-sub, analog signal

-

S-Video : MINI DIN, Separate video signal

-

Composite : RCA Jack, Composite video signal

-

TV : NTSC, PAL

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L17T Technical Service Manual

4.4 Direct Control ( Hot Key )

4.4.1 User Control Panel

- Source - Volume - Menu

- Power

- Select - Down ( ) - Up ( )

4.4.2 Function of each key

- Source
By this key, a user can change Input source sequentially. (PC->S-VIDEO->VIDEO->TV->PC)

- Volume
By this key, a user can activate Volume control menu.
And press button or button, a user can control the audio volume.

- Menu
By this key, a user can activate OSD menu.

- Power
By this key, a user can turn on (off) the main Power.

- Select
If a user press this key, AUTO Adjust function(4.2.5) executing.(PC Mode only)

- Down / Up
By this key, a user can change TV Channel sequentially.(TV Mode only)

4.5 Remote Controller

4.5.1 Figure of Remote Controller

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4.5.2 Function of each key

- POWER
By this key, a user can turn on (off) the main Power.

- INPUT SOURCE
By this key, a user can change Input source sequentially. (PC->S-VIDEO->VIDEO->TV->PC)

- Numeric
By this key, a user can select Channel directly.(TV Mode only)

- DISPLAY
By this key, a user can know about current state.(PC, S-VIDEO, VIDEO, TV – CH)

- PRE.CH
By this key, a user can move previous Channel.(TV Mode only)

- MUTE
By this key, a user can control the audio on/off. (4.2.4 & 4.3.4)

- EXIT
By this key, a user can exit all kinds of OSD menu.

- MENU
By this key, a user can activate OSD menu.
When OSD menu is activated, this key operate like select button.

- CH ( + / - )
By this key, a user can change TV Channel sequentially.(TV Mode only)
When OSD menu is activated, this key move selected item up or down.

- VOL ( + / - )
By this key, a user can control the audio volume.(4.2.4 & 4.3.4)
When OSD menu is activated, this key act like button or button.

- AUTO
If a user press this key, AUTO Adjust function(4.2.5) executing.(PC Mode only)

- CH SEARCH
If a user press this key, CH Searching function(4.3.6) executing.(TV Mode only)

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L17T Technical Service Manual

Connecting with External Equipment

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