Hyundai B70A, B71A, B90A, B91A, M17A Service Manual

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B70A/B71A/B90A/B91A/M17A/M17B

TFT LCD Color Monitor

TECHNICAL SERVICE MANUAL

B70A/B71A/M17A/M17B/B90A/B91A 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"/19" 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, Audio(Option) control, Auto Color

3. Electrical Characteristic

3-1. Power Supply

+12A DC 3.3A

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 : 2.4V min

Low : 0.4V max Polarity : - or +

Polarity : - or +

3-4. Vertical Synchronization Signal

Level : TTL High : 2.4V min

Frequency : 56Hz ~ 75Hz

Low : 0.4V max

Polarity : - or +

--1--

Control Description

Power Switch

LED Indecator

No.

1 2 3 4 5 6 7 8

9 10 11 12 13 14

Resolution

720

400 640 x 480 640 x 480 * 800 x 600 800 x 600

* 800 x 600 800 x 600

* 832 x 624 1024 x 768 1024 x 768 1024 x 768

*1152 x 864 1280 x 1024 1280 x 1024

Horizontal Frequency

31.5 KHz

37.5 KHz

35.2 KHz

37.9 KHz

48.1 KHz

46.9 KHz

49.7 KHz

48.4 KHz

56.5 KHz

60.0 KHz

67.5 KHz

63.9 KHz

80.0 KHz

Refresh rate

70 Hz 60 Hz 75 Hz 56 Hz 60 Hz 72 Hz 75 Hz 75 Hz 60 Hz 70 Hz 75 Hz 75 Hz 60 Hz 75 Hz

Front View

Support Modes

* Only B90A/B91A

(A70A/B71A/M17A/M17B/B90A/B91A)

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B70A/B71A/M17A/M17B/B90A/B91A Technical Service 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)

Video Input Signal

Recommended signal are shown below

•Video Signal

Video level : 0 to 700mV Polarity : positive Video Input : RGB separated

Sync input : H-Sync(TTL level)

•Waveform

Video input(R.G.B)

Analog level

V-Sync (TTL level)

• H-Sync

255

254

253

252

251

• Signal: 256 level gray

• Linear stepping: (2.73mV ~ 256 Steps)

700mV

scale

0mV

• V-Sync

--3--

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

PIN NO.

SIGNAL

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)

SCL

D-Sub miniature connector

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B70A/B71A/M17A/M17B/B90A/B91A Technical Service Manual

LINE OUT

* Audio System option Model

Connecting with External Equipment

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

--5--

Theory of Operation

1. AC/DC INVERTER

Input voltage : DC 12V Input current : 2.0A(Max) Output current : 6.5mArms(TYP) Frequency(switching) : 47KHz(Max) Output power : 18W(TYP) On/off control voltage : 5.0V

2. AC/DC ADATOR

This display device shall maintain the specified per formances in the range de scribed below

Frequency : 50/60Hz Voltage : 90 - 264Vac RMS

The following consumption requirments shall be met:

Power Consumption : 35W(typ) Current consumption : < 1.0 Aac RMS

Output Specification:

+12V DC

3.3A Max

3. 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.

- Auto Signal Input : < 600mVp-p(Max.)

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

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

Dual-Audio Power Amplifier (for a headphone output)

RL=32

- Speaker Micro Loudspeaker Spec.

Normal impedance 8 Resonance Freq. 550Hz +/- 110Hz at 1.0V Freq. Range fo ~ 20KHz Power Rating Normal 1.0W/Peak 2.0W

4. DPMS MODE

@THD=10% Vcc=4.5V (min. 1.8V, max. 15V)

15% at 1.0V 1.5KHz

Status

off

H-Sync

Pulse

Signal

V-Sync Video

Active

Pulse

Blank

Power

Consumption

35W(typ)

1W (TYP) 230V AC

--6--

Recovery

Time

Within 3

Sec

LED

Indicator

Green

Orange

B70A/B71A/M17A/M17B/B90A/B91A Technical Service Manual

1280 x 1024

H:63. 9 V:60.0

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:

1280x1024

H:63.9 V:60.0

BRIGHTNESSBRIGHTNESS

* Audio system Option Model

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

POSITION

H POSITION

Adjusts the horizontal position of the entire screen image.

V POSITION

Adjusts the vertical position of the entire screen image.

--7--

CLOCK PHASE

PHASE

Adjust the noise of the screen image.

CLOCK

Adjust the horizontal size of the entire screen 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 COLOR

Optimum color setting is auto programmed for user’s convenience.

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, Portuguese and Dutch(Option kiorea, Japanese chinese)

AUDIO

(Audio System Option Model)

VOLUME

Adjust the audio volume level.

AUDIO

This menu is used to choose audio on or off.

AUTO ADJUST

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

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B70A/B71A/M17A/M17B/B90A/B91A Technical Service 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.

--9--

1. No Video

Check The Adaptor NO LED ? Green ?

YES

Check the Monitor

LED Green ?

YES

Check the Video Output Line YES OK

1. Full white Pattern or RGB Garbage Video

NO NO

Check the Lamp! YES Screen is dark in the lsghton condiforn ? YES & You com see the faint Video int the darhroom

Power Saving mode

-> Check LED Color Green / Orange Toggle ?

NO Check the DC Input

YES YES

Change The

Adaptor

CN3, DC 12V U18 Output, DC 5V

Check the LVDS Cable & Output ?

NO H/V Sync

END

Chang the

INVERTER

Check MCU, Vcpu Voltage ? U5 #7 Pin

Signal Line ? U5 #41, # 42 Pin

END

Check the Voltage Line Replae & Check 12V Line con1 -> TO INVERTER 1. INVERTER 5V Line -> Vlcd, con4 NO 2 PCB Pattern 5v -> 3.3V, U 3 3 U 3 5V -> 1.8V, U 1 4 U 1

Check Signal Line Waveform ? Change

1. Y2 Cvystal ? NO 1. LVDS Cable

2. CON4, LVDS Output ? 2. Panel

YES NO

END OK

Check the Scaler, U4 & Replae Check the MCU 45 <-> Scaler U4 WaveForm? #19,20 #33, 34 Pin

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B70A/B71A/M17A/M17B/B90A/B91A Technical Service Manual

Specification

LCD Module

Input

SYNC

Display

Resolution

Video Bandwidth

User Control

OSD Control

Power Management

Plug & Play

Safety &

Regulation

Temperature

SIZE

Dot Pitch17" : 0.264mm , 19" : 0.294

Brightness

Response Time

Signal

Connector

H-Freq

V-Freq

Area(H)X(V)

Color

EMC

Safety

Ergonomi

Operating

Storage

17”/19" Viewable diagonal

300 cd/m 12m-sec (Typ)/8m-sec (Typ)

R.G.B Analog

15 pin D-SUB Connector

31.0kHz ~ 80.0kHz

56.0Hz ~ 75Hz

17" : 337.92X270.336mm, 19" : 376.32X301.056

16.2M Colors

1280 X 1024 @ 75Hz

135MHz

Contrast,Brightness, Position, Auto Color, Clock Phase, Color Control, Language, Auto Adjust, Miscellaneous, Audio Control, Audio(Option)

VESA DPMS Standard

VESA DDC 1/2B

FCC CLASS B , CE , VCCI

cULus, CE, TUV-GS, SEMKO TCO’03/99

5 to 35 °C

- 5 to 45 °C

(TYP)

Humidity

Operating

Storage

unpacked

Weight

packed

Dimension(WXHXD mm)

* Specification is subject to change without notice for performance improvement.

30 to 80%(Non-condensing)

5 to 90%(Non-condensing)

17" : 3.2Kg, 19" : 3.5Kg

17" : 4.8Kg, 19" : 5.2Kg

17" : 374x401x200, 19" : 412x428x200

--11--

Critcal Parts Specification

1. LCD Module

Model

Display area

Drive system

Display color

Number of Pixel

Pixel arrangement

Pixel pitch

Weight

Conerast ratio

View angle Horizontal

Verticel

Response time

Luminance

Signal system

Supply voltage

Backlight Edge light

type

Power consumption

LCD Type/Vendor

B70/B71A/M70A/M70B

337.92(H)X20.336(V)mm

A-Si TFT

16.2M Colors

1280x1024

RGB vertical strip

0.264(H)X0.264(V)mm

2.1Kg

500:1

75 degree, 75 degree

75 degree, 60 degree

12ms(max)

300cd/m(typ)

Digital RGB signals, Sync

signals(H, V-Sync)

5.0V(Typ)

Four colt cathode flurescrnt

lamps With in-verter

2.8W(Typ) without B/L

LTM170EU-L21(SAMSUNG)

LTM 170E01-A5K3(LG)

B90A/B91A

376.32(H)X301.056(V)mm

A-Si TFT

16.7M Colors

1280x1024

RGB vertical strip

0.294(H)X0.294(V)mm

2.75Kg 700:1

75 degree, 75 degree

75 degree, 60 degree

8ms(Typ)

300cd/m(typ) / 250cd/m(typ)

Digital RGB signals, Sync

signals(H, V-Sync)

5.0V(Typ)

Four colt cathode flurescrnt

lamps With in-verter

2.8W(Typ) without B/L

LTM190EX-L01(SAMSUNG)

Lcd Module is a A-SI TFT active martix color liquid crystal compising amorphous silicon TFT attached to each signal elecrode, a driving circuit and a backlight. a built-in backlight display area contains 1280x1024 pixels and can display full color (16.2M/16.7M colors)

--12--

LTM 190E04-A4(LG)

B70A/B71A/M17A/M17B/B90A/B91A Technical Service Manual

2) CONNECTIONS Physical interface is described as for the connector on module. These connectors are capable of accommodating the following signals and will be following

components

Connector Name / Designation

Manufacturer

Type Parts Number

Mating Housing Part Number

Connector Name / Designation

Manufacturer

Type Parts Number

Mating Type Part Number

3) Signal Pin

Pin#

Signal Name

Rxo0-

Rxo1-

Rxo2-

GND

RxoC+

Rxo3+

RxEo+

RxE1-

GND

RxE2+

RxEC+

RxE3+

Power

Interface Connector / Interface card

JAE or compatible

FI-X30S-HF

FI-X30S-H

Lamp Connector / Backlight lamp

JST

BHR-04VS-1

SM04(4.0)B-BHS-1-TB

Pin#

Signal Name

Rxo0+

Rxo1+

Rxo2+

RxoC-

Rxo3-

RxE0-

GND

RxE1+

RxE2-

RxEC-

RxE3-

GND

Power

--13--

4) Signal Description The module using a pair of LVDS receiver SN75LVDS82 (Texas Instruments) or compatible.

LVDS is a differential signal technology for LCD interface and high speed data transfer device. Transmitter shall be SN75LVDS83(negative edge sampling)or compatible. The first LVDS port(RxOxxx)transmots odd pixels while the second LVDS port(RxExxxx)transmits even pixels.

PIN #

SIGNAL NAME

RxO0-

RxO0+

RxO1-

RxO1+

RxO2-

RxO2+

GND

RxOC-

RxOC+

RxO3-

RxO3+

RxE0-

RxE0+

GND

RxE1-

RxE1+

GND

RxE2-

RxE2+

RxEC-

RxEC+

RxE3-

RxE3+

GND

POWER

Negative LVDS differential data input (odd data)

Positive LVDS differential data input (odd data)

Negative LVDS differential data input (odd data)

Positive LVDS differential data input (odd data)

Negative LVDS differential data input (odd data, H-Sync, V-Sync,DSPTMG)

Positive LVDS differential data input (odd data, H-Sync, V-Sync,DSPTMG)

Power Ground

Negative LVDS differential clock input (odd clock)

Positive LVDS differential clock input (odd clock)

Negative LVDS differential data input (odd data)

Positive LVDS differential data input (odd data)

Negative LVDS differential data input (Even clock)

Positive LVDS differential data input (Even data)

Power Ground

Positive LVDS differential data input (Even data)

Negative LVDS differential data input (Even data)

Power Ground

Negative LVDS differential data input (Even data)

Positive LVDS differential data input (Even data)

Negative LVDS differential clock input (Even clock)

Positive LVDS differential clock input (Even clock)

Negative LVDS differential data input (Even data)

Positive LVDS differential data input (Even data)

Power Ground

Power

DESCRIPTION

Note : Input signals of odd and even clock shall be the same timing.

LVDS DATA Name

DSP

V-S

H-S

Display Timing : When the signal is high, the pixel data shall be valid to be displayed

Vertical Sync : Both Positive and Negative polarity are acceptable

Horizontal Sync : Both Positive and Negative polarity are acceptable

DESCRIPTION

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B70A/B71A/M17A/M17B/B90A/B91A Technical Service Manual

TSU16AL-LF

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B70A/B71A/M17A/M17B/B90A/B91A Technical Service Manual

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