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

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

Low : 0.4V max Polarity : - or +

Frequency : 56Hz ~ 75Hz

--1--

Control Description

Front View

			LED Indecator
Support Modes(A70A/B71A/M17A/M17B/B90A/B91A)				Power Switch
No.	Resolution		Horizontal Frequency	Refresh rate
1	720 x	400	31.5 KHz	70 Hz
2	640 x	480	31.5 KHz	60 Hz
3	640 x	480	37.5 KHz	75 Hz
4	* 800 x 600		35.2 KHz	56 Hz
5	800 x	600	37.9 KHz	60 Hz
6	* 800 x 600		48.1 KHz	72 Hz
7	800 x 600		46.9 KHz	75 Hz
8	* 832 x 624		49.7 KHz	75 Hz
9	1024 x	768	48.4 KHz	60 Hz
10	1024 x	768	56.5 KHz	70 Hz
11	1024 x	768	60.0 KHz	75 Hz
12	*1152 x 864		67.5 KHz	75 Hz
13	1280 x	1024	63.9 KHz	60 Hz
14	1280 x	1024	80.0 KHz	75 Hz

* Only B90A/B91A

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

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)

•Waveform

Video input(R.G.B)

255

254

253

252

251

4

3

2

1

0

700mV

•Signal: 256 level gray scale

•Linear stepping:

(2.73mV ~ 256 Steps)

0mV

• H-Sync

• V-Sync

ACTIVE (T4)

ACTIVE (T4)

Period (T1)

Period (T1)

Front Porch

Front Porch

(T5)

(T5)

Back Porch (T3)

Back Porch (T3)

Sync Width (T2)

Sync Width (T2)

--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
SIGNAL	SEPARATE SYNC/
PIN NO.	DDC 1/2B
1	RED
2	GREEN
3	BLUE
4	GND
5	RETURN
6	RED GROUND
7	GREEN GROUND
8	BLUE GROUND
9	N.C
10	LOGIC GROUND
11	GROUND
12	SDA
13	H-SYNC(TTL)
14	V-SYNC(VCLK)
15	SCL

D-Sub miniature connector

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

Connecting with External Equipment

Cautions

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

LINE OUT

* Audio System option Model

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

-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

4. DPMS MODE

	Status		Signal		Power	Recovery	LED
		H-Sync	V-Sync	Video	Consumption	Time	Indicator
	on	Pulse	Pulse	Active	35W(typ)	-	Green
	off	No	No	Blank	1W (TYP) 230V AC	Within 3	Orange
		Pulse	Pulse			Sec

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

1280x1024 H:63.9 V:60.0

BRIGHTNESS

* 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

Change The

LED ? Green ?

Adaptor

YES

NO

Check the Monitor

Check the DC Input

LED Green ?

CN3, DC 12V

U18 Output, DC 5V

YES

Check the Video Output Line

YES

Check the LVDS

OK

END

1. Full white Pattern or RGB

Cable & Output ?

Garbage Video

NO

NO

YES

Check the Lamp!

Chang the

END

Screen is dark in the lsghton condiforn ?

INVERTER

YES

& You com see the faint Video int the darhroom

NO

NO

Check MCU, Vcpu Voltage ? U5 #7 Pin

Power Saving mode

NO

H/V Sync

-> Check LED Color Green / Orange Toggle ?

YES

Signal Line ? U5 #41, # 42 Pin

YES

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

OK

OK

Check Signal Line Waveform ?

Change

OK

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

			SIZE	17”/19" Viewable diagonal
	LCD Module		Dot Pitch	17" : 0.264mm , 19" : 0.294
			Brightness	300 cd/m2 (TYP)
			Response Time	12m-sec (Typ)/8m-sec (Typ)
	Input		Signal	R.G.B Analog
			Connector	15 pin D-SUB Connector
	SYNC		H-Freq	31.0kHz ~ 80.0kHz
			V-Freq	56.0Hz ~ 75Hz
	Display		Area(H)X(V)	17" : 337.92X270.336mm, 19" : 376.32X301.056
			Color	16.2M Colors
	Resolution			1280 X 1024 @ 75Hz
	Video Bandwidth			135MHz
	User Control			Contrast,Brightness, Position, Auto Color,
				Clock Phase, Color Control, Language, Auto Adjust,
		&
	OSD Control			Miscellaneous, Audio Control, Audio(Option)
	Power Management			VESA DPMS Standard
	Plug & Play			VESA DDC 1/2B
			EMC	FCC CLASS B , CE , VCCI
	Safety &
			Safety	cULus, CE, TUV-GS, SEMKO
	Regulation
			Ergonomi	TCO’03/99
	Temperature		Operating	5 to 35 °C
			Storage	- 5 to 45 °C
			Operating	30 to 80%(Non-condensing)
	Humidity
			Storage	5 to 90%(Non-condensing)
			unpacked	17" : 3.2Kg, 19" : 3.5Kg
	Weight
			packed	17" : 4.8Kg, 19" : 5.2Kg
	Dimension(WXHXD mm)			17" : 374x401x200, 19" : 412x428x200

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

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Critcal Parts Specification

1. LCD Module

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)

Model		B70/B71A/M70A/M70B	B90A/B91A
Display area		337.92(H)X20.336(V)mm	376.32(H)X301.056(V)mm
Drive system		A-Si TFT	A-Si TFT
Display color		16.2M Colors	16.7M Colors
Number of Pixel		1280x1024	1280x1024
Pixel arrangement		RGB vertical strip	RGB vertical strip
Pixel pitch		0.264(H)X0.264(V)mm	0.294(H)X0.294(V)mm
Weight		2.1Kg	2.75Kg
Conerast ratio		500:1	700:1
View angle	Horizontal	75 degree, 75 degree	75 degree, 75 degree
	Verticel	75 degree, 60 degree	75 degree, 60 degree
			8ms(Typ)
Response time		12ms(max)
Luminance		300cd/m(typ)	300cd/m(typ) / 250cd/m(typ)
Signal system		Digital RGB signals, Sync	Digital RGB signals, Sync
		signals(H, V-Sync)	signals(H, V-Sync)
Supply voltage		5.0V(Typ)	5.0V(Typ)
Backlight Edge light		Four colt cathode flurescrnt	Four colt cathode flurescrnt
type		lamps With in-verter	lamps With in-verter
Power consumption		2.8W(Typ) without B/L	2.8W(Typ) without B/L
LCD Type/Vendor		LTM170EU-L21(SAMSUNG)	LTM190EX-L01(SAMSUNG)
		LTM 170E01-A5K3(LG)	LTM 190E04-A4(LG)

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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				Interface Connector / Interface card
		Manufacturer			JAE or compatible
		Type Parts Number			FI-X30S-HF
Mating Housing Part Number					FI-X30S-H
Connector Name / Designation				Lamp Connector / Backlight lamp
		Manufacturer			JST
		Type Parts Number			BHR-04VS-1
	Mating Type Part Number				SM04(4.0)B-BHS-1-TB
3) Signal Pin
Pin#		Signal Name		Pin#	Signal Name
1		Rxo0-		2	Rxo0+
3		Rxo1-		4	Rxo1+
5		Rxo2-		6	Rxo2+
7		GND		8	RxoC-
9		RxoC+		10	Rxo3-
11		Rxo3+		12	RxE0-
13		RxEo+		14	GND
15		RxE1-		16	RxE1+
17		GND		18	RxE2-
19		RxE2+		20	RxEC-
21		RxEC+		22	RxE3-
23		RxE3+		24	GND
25		NC		26	NC
27		NC		28	Power
29		Power		30	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	DESCRIPTION
1	RxO0-	Negative LVDS differential data input (odd data)
2	RxO0+	Positive LVDS differential data input	(odd data)
3	RxO1-	Negative LVDS differential data input (odd data)
4	RxO1+	Positive LVDS differential data input	(odd data)
5	RxO2-	Negative LVDS differential data input (odd data, H-Sync, V-Sync,DSPTMG)
6	RxO2+	Positive LVDS differential data input (odd data, H-Sync, V-Sync,DSPTMG)
7	GND	Power Ground
8	RxOC-	Negative LVDS differential clock input (odd clock)
9	RxOC+	Positive LVDS differential clock input (odd clock)
10	RxO3-	Negative LVDS differential data input (odd data)
11	RxO3+	Positive LVDS differential data input	(odd data)
12	RxE0-	Negative LVDS differential data input (Even clock)
13	RxE0+	Positive LVDS differential data input	(Even data)
14	GND	Power Ground
15	RxE1-	Positive LVDS differential data input	(Even data)
16	RxE1+	Negative LVDS differential data input (Even data)
17	GND	Power Ground
18	RxE2-	Negative LVDS differential data input (Even data)
19	RxE2+	Positive LVDS differential data input	(Even data)
20	RxEC-	Negative LVDS differential clock input (Even clock)
21	RxEC+	Positive LVDS differential clock input (Even clock)
22	RxE3-	Negative LVDS differential data input (Even data)
23	RxE3+	Positive LVDS differential data input (Even data)
24	GND	Power Ground
25	NC	-
26	NC	-
27	NC	-
28	POWER	Power
29	POWER	Power
30	POWER	Power

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

LVDS DATA Name	DESCRIPTION
DSP	Display Timing : When the signal is high, the pixel data shall be valid to be displayed
V-S	Vertical Sync : Both Positive and Negative polarity are acceptable
H-S	Horizontal Sync : Both Positive and Negative polarity are acceptable

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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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