ImageQuest L70S Operating manual

TFT LCD Color Monitor
TECHNICAL SERVICE MANUAL
L70S

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L70S Technical Service Manual
Safet 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 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)
2-3. OSD Controls
H/V Position, Clock Phase, Brightness, Contrast, Recall, Color Control, Language, Auto
Adjust, Miscellaneous, Audio control, Auto Color
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 Current A/1.5A
3-2. Video Input Signal
Level : 0.7 Vp-p analog signal(at 75 ohm termination to ground)
Polarity : Positive
3-3. Horizontal S nchronization Signal
Level : TTL High : .4V min
Low : 0.4V max
Polarity : - or +
Frequency : 31kHz ~ 80kHz
3-4. Vertical S nchronization Signal
Level : TTL High : .4V min
Low : 0.4V max
Polarity : - or +
Frequency : 56Hz ~ 75Hz

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Control Description
Front View
Support Modes
H Frequency
(kHz)
31.5
31.5
37.5
37.9
46.9
48.4
56.5
60.0
63.900
79.976
V Frequency
(Hz)
70.1
59.9
75.0
60.3
75.0
60.0
70.1
75.0
60.000
75.0 5
H
Polarity
0
0
0
1
1
0
0
1
1
1
V
Polarity
1
0
0
1
1
0
0
1
1
1
Dot Clock
(MHz)
8.3
5.175
31.500
40.000
49.500
65.000
75.000
78.750
108.00
135.00
NO
1
3
4
5
6
7
8
9
10
Resolution
7 0 x 400
640 x 480
640 x 480
800 x 600
800 x 600
10 4 x 768
10 4 x 768
10 4 x 768
1 80 x 10 4
1 80 x 10 4
Power Switch / LED Indecator

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)
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L70S 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)
• H-S nc • V-S nc
0
1
3
4
51
5
53
54
55 700mV
0mV
• Signal: 56 level gray
scale
• Linear stepping:
( .73mV ~ 56 Steps)

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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.
3
1
5
4
6
7
8
9
10
11
1
13
14
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.
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L70S Technical Service Manual
LINE OUT

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Theor of Operation
1. AC/DC INVERTER
Input voltage : DC 1 V
Input current : .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 - 64Vac RMS
The following consumption requirments shall be met:
Power Consumption : 35W(typ)
Current consumption : < 1.0 Aac RMS
Output Specification:
output1 : 1 V/ A
output : 5V/1.5A
3. Audio S stem
This monitor has a audio system including two micro loudspeakers.
Each of two micro loudspeakers has a W(Max) output power.
This system also supports a headphone(earphone) output.
- Auto Signal Input : < 600mVp-p(Max.)
- Auto Amplifiers
W+ W 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=3 @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 ~ 0KHz
Power Rating Normal 1.0W/Peak .0W
4. DPMS MODE
Status
on Pulse Pulse Active
Blank
No
Pulse
No
Pulse
off
Signal Power
Consumption
-
Within 3
Sec
Recovery
Time
Orange
LED
Indicator
Green
35W(typ)
1W (TYP) 30V AC
H-Sync V-Sync Video

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L70S 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:
he 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(9300K), Mode 2(6500K) 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.
1280x1024
H:63.9 V:60.0
BRIGHTNESSBRIGHTNESS

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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, Dutch and Japanese or chinese.
AUDIO
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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L70S 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.
Factor Setting & EEPROM Initialization Method
Factor 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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Specification
LCD Module
SIZE 17” Viewable diagonal
Dot Pitch 0. 64mm
Brightness
Response Time
60 cd/m (TYP)
16m- 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
Color
337.9 (H)X 70.336(V)mm
6 K Colors
Resolution
Video Bandwidth
User Control
&
OSD Control
Contrast,Brightness, Position, Auto Color,
Clock Phase, Color Control, Language,
Auto Adjust, Miscellaneous, Audio Control
Power Management VESA DPMS Standard
Plug & Play VESA DDC 1/ B
Safety &
Regulation
EMC
Ergonomi
Safety
FCC CLASS B , CE , VCCI
TCO’99
cULus, CE, TUV-GS, SEMKO
Temperature
30 to 80%(Non-condensing)
5 to 90%(Non-condensing)
packed
Humidity
Operating
Operating
Storage
Storage
5 to 35 °C
- 5 to 45 °C
Weight
unpacked
Dimension(WXHXD mm)
* Specification is subject to change without notice for performance improvement.
5.0Kg
37 .5 X 398 X 185 mm
3.8Kg
1 80 X 10 4 @ 75Hz
135MHz

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L70S Technical Service Manual
Critical Parts Specification
1. LCD Module
M170EN05(LTM170EU-L01, HT17E1 -100 is a a-si TFT active matrix color liquid crystal
comprising amorphous silicon TFT attached to each signal electrode, a driving circuit and a
backlight.
M170EN05(LTM170EX-L01, HT17E1 -100 has a built-in backlight display area contains
1 80X10 4 pixels and can display full color ( 6 K colors)
Display area 337.9 (H)X 70.336(V)mm
Drive system a-si TFT
Display color 6 K Colors
Number of Pixel 1 80X10 4
Pixel arrangement RGB vertical strip
Pixel pitch 0. 64(H)X0. 64(V)mm
Contrast Ratio* 450:1
Viewing angle*
Horizontal: 70 degree, 70 degree
Vertical: 70 degree, 70 degree
Response time* 16ms(Typ)
Luminance* 60cd/m (Typ)
Signal system Digital RGB signals, Sync signals(H, V-Sync),
Dot clock(DCLK) , DE(Data Enable)
Supply voltage 5V
Backlight Edge light type: Four colt cathode fluorescent lamps
power consumption 19.6W(TYP) CCFL
*: only M170EN05
Vendor
Au Optronics
SamSung
Hydis
Type
M170EN05
LTM170EU-L01
HT17E1 -100

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Connector Name / Designation
Manufacturer
Type Parts Number
Mating Housing Part Number
Interface Connector / Interface card
JAE or compatible
FI-X30S-HF
FI-X30S-H
) 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
3) Signal Pin
Connector Name / Designation
Manufacturer
Type Parts Number
Mating Type Part Number
Lamp Connector / Backlight lamp
JST
BHR-04VS-1
SM04(4.0)B-BHS-1-TB
Pin#
1
3
5
7
9
11
13
15
17
19
1
3
5
7
9
Pin#
4
6
8
10
1
14
16
18
0
4
6
8
30
Signal Name
Rxo0-
Rxo1-
Rxo -
GND
RxoC+
Rxo3+
RxEo+
RxE1-
GND
RxE +
RxEC+
RxE3+
NC
NC
Power
Signal Name
Rxo0+
Rxo1+
Rxo +
RxoC-
Rxo3-
RxE0-
GND
RxE1+
RxE -
RxEC-
RxE3-
GND
NC
Power
Power

4) Signal Description
The module using a pair of LVDS receiver SN75LVDS8 (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.
Note : Input signals of odd and even clock shall be the same timing.
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L70S Technical Service Manual
PIN #
1
3
4
5
6
7
8
9
10
11
1
13
14
15
16
17
18
19
0
1
3
4
5
6
7
8
9
30
SIGNAL NAME
RxO0-
RxO0+
RxO1-
RxO1+
RxO -
RxO +
GND
RxOC-
RxOC+
RxO3-
RxO3+
RxE0-
RxE0+
GND
RxE1-
RxE1+
GND
RxE -
RxE +
RxEC-
RxEC+
RxE3-
RxE3+
GND
NC
NC
NC
POWER
POWER
POWER
DESCRIPTION
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
Power
Power
LVDS DATA Name
DSP
V-S
H-S
DESCRIPTION
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

--14--
GENERAL DESCRI PTION
The MST9111 is a high performance, and fully integrated graphics processing IC solution for LCD
monitors with resolutions up to SXGA. It is configured with an integrated triple-ADC/PLL, a high qualit
scaling engine, an on-screen display controller, a built-in output clock generator, and LVDS displa
interface. To further reduce system costs, the MST9111 also integrates intelligent power managemen
control capability for green-mode requirements and spread-spectrum support for EMI management.
FEATURES
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High-quality zoom and shrink scaling engine
(Compatible with VGA thru SXGA)
Integrated 8-bit triple-ADC/PLL
On-screen display controller (OSD)
Support single-RGB inputs
Built-in LVDS transmitter
Support composite sync and SOG separator
Programmable 10-bit gamma correction
Integrated Brightness & Contrast control
adjustment
Support PWM backlit intensity control
Support sRGB function
Green PC and low EMI features
Low standby power mode (< 5mA)
High-Performance Scaling Engine
Programmable shrink/zoom capabilities
High-quality scaling for all VESA and IBM mode
to fit screen
Variable sharpness control
Analog RGB Compliant Input Port
Supports up to SXGA at 85Hz
Supports Composite Sync and SOG
(Sync-on-Green) separator
Auto-Detection/Tune
Autoinput signal format (SOG,Composite,
Separated HSYNC, VSYNC, and DE), and input
mode (all VESA & IBM modes w/ resolution and
polarity) detection
Auto-tuning function including phasing,
positioning, offset, gain, and jitter detection
Smart screen-fitting
On-Screen OSD Controller
Built-in OSD generator with 226 character font
programmable RAM
Internal OSD rotation degree of 90 and 270
Gradient color function
Pattern generator for production test
Support OSD MUX and alpha blending capability
LVDS Display Interface
Dual pixel with max. output LVDS clock rate of 85
MHz
Support 2 data output formats: Thine & TI data
mappings
Compatible with TIA/EIA
With 6/8 bits options
Reduced swing for LVDS for low EMI
External Connection/Component
Built-in DDC circuit
MST9111

L70S Technical Service Manual
PIN DIAGRAM

--16--
Pin Name
A0, A1 N.C.
A2 Device Address inputs
Vss Ground
SDA Data I/O
SCL Clock input
WP Write Protect
Vcc + 5 V or + 3 V
3.0 ABSOLUTE MAXIMUM RATINGS
Storage Temperature................................-65°C to + 125°C
Voltage with Respect to Ground.................-0.3 to + 6.5 V
NOTE: These are STRESS rating only. Appropriate conditions for operating these devices given elsewhere
may permanently damage the part. Prolonged exposure to maximum ratings may affect device reliability.
4.0 OPERATING CONDITIONS
Temperature under bias: MTV24C08/24LC08.......0°C to + 70°C
MTV24C08/24LC08-I.....-40°C to + 85°C
VCC
WP
SCL
SDA
A0
A1
A2
VSS
1
2
3
45
6
7
8
24C08
or
24LC08
TSSOP
VCC
WP
SCL
SDA
A0
A1
A2
VSS
VCC
WP
SCL
SDA
A0
A1
A2
VSS
1
2
3
4
8
7
6
5
1
2
3
45
6
7
8
Dual-In-Line
package SO package
(M8)
24C08
or
24LC08
24C08
or
24LC08
4LC08

--17--
L70S Technical Service Manual
5.0 ELECTRICAL CHARACTERISTICS
DC ELECTRICAL CHARACTERISTICS
(Vcc =5V +/- 10% ,MTV24C08/24LC08
°F Vcc =3V +/- 10% ,24LC08)
MTV24C08/
24LC08 24LC08 Units
Symbol Parameter Conditions Min Max Min Max
ICC1 Operating Current
(Program)
SCL = 100KHZ
CMOS Input Levels —10 —8mA
ICC2 Operating Current
(Read) SCL = 100KHZ CMOS Input Levels —2 —2mA
ISB Standby Current SCL = SDA = 0 V —10 —10µA
IIL Input Leakage VIN = 0 V to VCC -1 +1 -1 +1 µA
IOL Output Leakage VOUT = 0 V to Vcc -1 +1 -1 +1 µA
VIL Input Low Voltage -0.1 0.8 -0.1 0.15 V
CC
V
VIH Input High Voltage 2V
CC
+0.2 0.8VCC V
CC
+0.2 V
VOL1 Output Low Voltage IOL = 2.1mA TTL — 0.4 — 0.4 V
VOH1 Output High Voltage IOH = -400uA TTL 2.4 — 2.4 — V
VOL2 Output Low Voltage IOL = 10uA CMOS — 0.2 — 0.2 V
VOH2 Output High Voltage IOH = -10uA CMOS V
CC
-0.2 —V
CC
-0.2 —V
VLK
V
CC
Lockout Volta
g
e
Programming Command
Can Be Executed Default —Default —V
6.0 SWITCHING CHACTERISTICS (Under Operating Conditions )
AC ELECTRICAL CHARACTERISTICS
(Vcc =5V +/- 10% , MTV24C08
°F Vcc =3V +/- 10% ,24LC08)
(Vcc =5V +/- 10% , MTV24C08 Fast Mode)
MTV24C08/
24LC08 MTV24C08 (Fast Mode)
Parameter Symbol Min Max Min Max Units
Clock frequency Fscl 0 100 — 400 kHz
Clock high time Thigh 4000 — 600 — ns
Clock low time Tlow 4700 — 1200 — ns
SDA and SCL rise time Tr — 1000 — 300 ns
SDA and SCL fall time Tf — 300 — 300 ns
START condition hold time Thd:Sta 4000 — 600 — ns
START condition setup time Tsu:Sta 4700 — 600 — ns
Data input hold time Thd:Dat 0 — 0 — ns
Data input setup time Tsu:Dat 250 — 100 — ns
STOP condition setup time Tsu:Sto 4000 — 600 — ns
Output valid from clock Taa 300 3500 100 900 ns
Bus free time Tbuf 4700 — 1200 — ns
Data out hold time Tdh 300 — 50 — ns
Input filter spike suppression
(SDA and SCL pins) Tsp — 100 — 50 ns
Write cycle time Twr — 10 — 10 ms

--18--
CAPACITANCE TA= 25 ∞ C , f=250KHZ
Symbol Parameter Max Units
CO
UT Output capacitance 5 pF
CIN Input capacitance 5 pF
A.C. Conditions of Test
Input Pulse Levels Vcc x 0.1 to Vcc x 0.9
Input Rise and Fall times 10 ns
Input and Output Timming level Vcc x 0.5
Output Load 1 TTL Gate and CL = 100pf

--19--
L70S Technical Service Manual
Features
•Low dropout voltage
•Load regulation: 0.05% typical
•Trimmed current limit
•On-chip thermal limiting
•Standard SOT-223, TO-263, and TO-252 packages
•Three-terminal adjustable or fixed 2.5V, 2.85V, 3.3V, 5V
Applications
•Active SCSI terminators
•High efficiency linear regulators
•Post regulators for switching supplies
•Battery chargers
•5V to 3.3V linear regulators
•Motherboard clock supplies
Description
The RC1117 and RC1117-2.5, -2.85, -3.3 and -5 are low
dropout three-terminal regulators with 1A output current
capability. These devices have been optimized for low voltage
where transient response and minimum input voltage are
critical. The 2.85V version is designed specifically to be
used in Active Terminators for SCSI bus.
Current limit is trimmed to ensure specified output current
and controlled short-circuit current. On-chip thermal limiting
provides protection against any combination of overload and
ambient temperatures that would create excessive junction
temperatures.
Unlike PNP type regulators where up to 10% of the output
current is wasted as quiescent current, the quiescent current
of the RC1117 flows into the load, increasing efficiency.
The RC1117 series regulators are available in the industry-
standard SOT-223, TO-263 (D2PAK), and TO-252 (DPAK)
power packages.
Typical Applications
VIN = 3.3V VIN VOUT
ADJ
1.5V at 1A
RC1117
10 F 2 2 F
R1
124
R2
24.9
VIN = 5V VIN VOUT
GND
2.85V at 1A
RC1117-2.85
10 F ++
++
22 F
VOUT = VREF(1+R2/R1) + IAdj • R2
RC1117
1A Adjustable/Fixed Low Dropout Linear Regulator
RC1117X .5