acer AL2002 Service Manual
ACER_LCD_AL2002W_SM061206V0
LCD Color Monitor: T20BNUW-G1
Model Name: ACER AL2002W-Dual
Service Manual
Table of Contents
Important Safety Notice
01. Product Overview---------------------------------------------------------------------------------------02
02. General Requirement----------------------------------------------------------------------------------02
03. Electrica Related Information------------------------------------------------------------------------ 03
04. Flat Panel------------------------------------------------------------------------------------------------ 12
05. Optical Characteristics-------------------------------------------------------------------------------- 14
06. Environmental Requirements------------------------------------------------------------------------ 16
07. RGB settings---------------------------------------------------------------------------------------------17
08. Color grayscale linearity-------------------------------------------------------------------------------17
09. Packing Drawing----------------------------------------------------------------------------------------18
10. Exploded Diagram--------------------------------------------------------------------------------------19
11. Schematics and Layouts-------------------------------------------------------------------------------20
Appendixes:
Appendix-1 Product Matrix
Appendix-2 User s Manual
Appendix-3 Quick Start Guide
Appendix-4 Spare Parts List
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ACER AL2002W
e
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Important Safety Notic
Product Anouncement:
This product is certificated to meet RoHS Directive and Lead-Free produced definition. Using approved critical components only is
recommended when the situation to replace defective parts. Vender assumes no liability express or implied, arising out of any
unauthorized modification of design or replacing non-RoHS parts. Service providers assume all liability.
Qualified Repairability:
Proper service and repair is important to the safe, reliable operation of all series products. The service
providers recommended by vender should being aware of notices listed in this service manual in order to
minimize the risk of personal injury when perform service procedures. Furtermore, the possibile existed
improper repairing method may damage equipment or products. It is recommended that service engineers
should have repairing knowledge, experience, as well as appropriate product training per new model before
performing the service procedures.
NOTICE:
à To avoid electrical shocks, the products should be connect to an authorized power cord, and turn off the master power
switch each time before removing theAC power cord.
à To prevent the product away from water or explosed in extremely high humility environment.
à To ensure the continued reliability of this product, use only original manufacturer’s specified parts.
à To ensure following safty repairing behavior, put the replaced part on the components side of PWBA, not solder side.
à To ensure using a proper screwdriver, follow the torque/force listed in assembly and disassembly
à procedures to unscrew screws.
à Using Lead-Free solder to well mounted the parts.
à The fusion point of Lead-Free solder requested in the degree of 220°C.
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1. Product Overview:
This document defines the design and performance requirements for the Liteon standard 20” wide flat panel monitor. The
display element shall be a 20” inch diagonal, WSXGA (1680 x 1050) resolution, TFT-LCD (Thin Film Transistor Liquid Crystal
Display. Video input signals are Analog D-sub and DVI-D Digital with non-interlaced signaling. Power saving function
complies with the DPMS (Display Power Management Standard).
General display parameters
Display Area 20” diagonal, (H)433.44(H)x270.90(V)
Resolution 1680 x 1050 pixels
Display Color Number 16.7M colors(RGB 6-bit+Hi-FRC data)
Display Type a-Si TFT active-matrix
Contrast Ratio 800 : 1 typ.
Brightness 300cd/m2 typ.
Response Time (Ton + Toff) 5 ms typ.
Pixel Pitch 0.258mm x 0.258mm RGB Vertical Stripes
Vertical Viewing 160 degrees typ,
Horizontal Viewing 160 degrees typ,
CR=10
CR=10
Optical Characteristics
M201EW02 V1
Note: Per panel specification, over the life of the product, variation of parameters specified in panel
specification shall be maintained within reasonable limits. Check supplier quality inspection criteria for
the detail information.
2. GENERAL REQUIREMENTS:
2.1 Test Condition
Brightness level at max & contrast level at default full white pattern test mode following spec. Warm up more than 30
min, ambient light < 1 Lux, Luminance meter CA210 or BM7 or compatible equipment.
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2.2 Test Equipment
The reference signal source is a calibrated Chroma 2326 or Quantum 801GD video generator. The use of other signal
generators during qualification and production is acceptable provided the product complies with this specification.
3. ELECTRICAL RELATED INFORMATION:
This section describes the electrical requirement of the monitor. The block diagram in Figure 1 illustrates the various electrical
sub-system.
3.1. Product Block Diagram
The LCD monitor will contain an interface board, a Power / Inverter board, and a function key board. The interface block
will house the flat panel control logic, brightness control logic, and DC-DC conversion to supply the appropriate power to
the whole board and LCD panel, and transmitting LVDS signals into LCD Module to drive the LCD display circuit. The
inverter block will drive the four dual CCFLs (Cold Cathode fluorescent Tube). The power block will provide the DC power
to interface board and LCD panel. The function key block will provides the OSD control signal, power ON/OFF and LED
indicator to the interface board.
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3.2. Product Specification
Analog Signal Input
Digital Signal Input
Connectors
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ITEM SPEC
Frequency Ranges
Max Pixel clock 205MHz
RGB Input Level 0.7Vp-p
RGB Input Impedance 75Ω
Sync Input Signal
Sync Input Impedance 50Ω
Frequency Ranges
Max Pixel clock 165MHz
DVI Input Level 150mV Vp≦ -p 1560mV ≦
DVI Input Impedance Input Impedance 100Ω per pair
AC power AC 100V ~ AC 220V ± 10% 50/60Hz, 3 pin AC power cord
Input connectors D-SUB 15 pin, DVI-D
H 30kHz ~ 81kHz
V 56Hz ~ 76Hz
Separate SYNC, Composite Sync or Sync on Green are
supported
H 30kHz ~ 81kHz
V 56Hz ~ 76Hz
Power Consumption
User’s Control Front Panel Buttons POWER, MENU, SELECT, + , -
Dimming control range
(max-min/max) x 100%
Timing
Plug and Play VESA DDC2B
Power Saving DPMS
Input Signal Counter tolerance H ±1kHz, V ±1 Hz
3.3. Interface Connectors
3.3.1. Power Connector and Cables
AC IN 90~264V
Normal Operation
Standby, Suspend,
Active Off
Power Off < 1W @ (90VAC~240VAC)
Factory 11 Pre-Defined
User 15
49W Max
< 2W
35% typical
The AC inlet connector shall have an IEC/CEE-22 type male power receptacle for connection to mains power.
The power cord, exact type to be supplied in the appropriate Option Kit, shall be black have length of 1.8
0.05 meters.
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3.3.2. Signal Connectors and Cable
The analog signal cable shall be black and 1800 mini-meters, the digital signal cable shall be black and 1800
mini-meters, At the end of the analog cable shall be a molded-over, shielded, triple row, 15 position and blue
color D subminiature connector. At the end of the digital cable shall be a molded-over, shielded, triple row, 24
position, white color DVI-D connector. The CPU connection shall have captive screw locks, which will be
adequate for hand tightening. The monitor connection may use small screws.
3.3.3. Connector Pin Assignment
A. DSUB
Pin Signal Pin Signal Pin Signal
B. DVI-D (Digital TMDS) Connector
Pin Signal Pin Signal Pin Signal
1 Red-Video 6 Red-GND 11 GND
2 Green-Video 7 Green-GND 12 DDC-SDL
3 Blue-Video 8 Blue-GND 13 H-SYNC
4 GND 9 + 5V 14 V-SYNC
5 Self Test 10 DDC-GND 15 DDC-SCL
1 TMDS Data 2- 9 TMDS Data 1- 17 TMDS Data 0-
2 TMDS Data 2+ 10 TMDS Data 1+ 18 TMDS Data 0+
3 TMDS Data GND 11 TMDS Data GND 19 TMDS Data GND
4 NC 12 NC 20 NC
5 NC 13 NC 21 NC
6 DDC Clock 14 + 5V Power 22 TMDS Clock GND
7 DDC Data 15 Self Test 23 TMDS Clock +
8 NC 16 Hot Plug Detect 24 TMDS Clock -
C. Power Board Connector
Pin Signal
1 5.2V
2 5.2V
3 5.2V
4 5.2V
5 GND
6 GND
7 GND
8 GND
9 BKLT-EN
10 BKLT-ADJ
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D. Flat Panel Connector
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3.4. Input Signals (Analog RGB Signal Input):
3.4.1. Video Input Signal Ranges
No. Symbol Item Min Normal Max Unit Remark
1 Fh Horizontal Frequency 30 81 kHz Minimum range
2 Fv Vertical Frequency 56 76 Hz Minimum range
3 Fclk Locked Pixel Clock Frequency 165 MHz
4 Vih Hi Level Input 2.0 5.0 V Note 1)
5 Vil Low Level Input 0 0.8 V Note 1)
6 Video RGB Analog Video Level 0.0 0.735 V 75Ω to Ground
Note : 2.2kΩ to Ground, Schmitt-Triggers Input, Supported 3.3V device H & V sync. Output.
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3.4.2. Video Signal Amplitudes
The three video inputs consist of Red, Green, and Blue signals, each with its own coaxial cable terminated at
the monitor. These video signals are analog levels, where 0V corresponds to black, and 735 mV is the
maximum signal amplitude for the respective color, when each signal is terminated by a nominal 75.0 ohm. For
a given monitor luminance levels are measured using this defined video amplitude driving a monitor meeting
the termination requirements. The signal amplitude is not to be readjusted to compensate for variations in
termination impedance.
3.4.3. Video Signal Termination Impedance
This analog video signal termination shall be 75 ohm +/- 2% which shall be resistive with a negligible reactive
component.
3.4.4. Synchronization (Sync) Signals
The Horizontal Sync (HS) TTL signal is used to initiate the display of a horizontal line. HS may be either active
high or active low, depending upon the timing. The Vertical Sync (VS) TTL signal is used to initiate the display
of a new frame. VS may be either active high or active low, depending on the timing.
3.4.5. Sync Signal Levels
The monitor must accept sync signals from both 3.3 and 5 volt TTL logic families. The inputs shall sense a logic
0 when the input is 0.8 volt or less and shall sense a logic 1 when the input is 2.0 volts or greater. In addition to
these level requirements, there shall also be a minimum of 0.3 volt hysteresis provided for noise immunity
(typically by using a Schmitt Trigger input). That is, the input level at which the monitor actually detects a logic 0
shall be at least 0.3 volt lower than the level at which it actually detects a logic 1. If the monitor sync processing
circuits are designed around the 3.3 volt logic family, then the sync inputs must be 5 volt tolerant.
3.4.6. Sync Signal Loading
TTL input loading shall be equivalent to one TTL input load. When logic 0 is asserted by a sync input, the
maximum current source from any single monitor sync input to the driver is 1.6 mA. When logic 1 is asserted,
the maximum current source from the driver to any single monitor sync input is 400mA.
3.4.7. Abnormal Signal Immunity
The monitor shall not be damaged by improper sync timing, pulse duration, or absence of sync, or abnormal
input signal amplitude (video and/ or sync too large or too small), or any other anomalous behavior of a
graphics card video generator when changing modes, or when any combination of input signals is removed or
replaced. Additionally, under these conditions, the monitor shall not cause damage to the driving source.
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3.5. Interface Boards (Digital TMDS Input)
3.5.1. The interface board will house the Panel-Link receiver , and transmitting TTL level signals into LCD Module to
driver the LCD display circuit.
3.5.2. Video Signal Amplitudes
This video inputs consist of TX 0 ±, TX 1 ±, TX 2 ± and CLK ± signals, each with its own shielded twisted pair.
These video signals are digital levels, when each signal pair is terminated by a normal 100 ohms .The panel-Link
signal transmitting over the cable is based on 3V DC offset with ± 0.5V amplitude.
3.5.3. Video Signal Termination Impedance
This panel link signal termination shall be 100Ω per pair which shall be resistive with a negligible reactive
component.
3.5.4. Signal Connector (DVI-D 24 pin)
This signal cable connector shall be white color, molded – over and shielded twisted pair cable with 50Ω
impedance per line or 100Ω ±10% per differential pair. The cable shall be 2000 mini-meters long.
3.6. User Controls and Indicators:
3.6.1. Power On / Off Switch
The monitor shall have a power control switch visible and accessible on the front of the monitor.
The switch shall have no effect on the operation of the AC / DC converter. Instead, it shall interrupt the DC
supply to the monitor.
3.6.2. Power Indicator LED
The monitor shall make use of a LED type indicator located on the front of the monitor. The LED color shall
indicate the power states as given in Table below.
Power-ON Mode : Green
Power Saving Mode : Amber
3.6.3. On-Screen Display
The On Screen Display system shall be used, controlled by a select button (SELECT), a menu button (MENU),
LED Color
a plus (+) button and a minus (-) button. If the buttons remain untouched for OSD turn off time while displaying
a menu, the firmware shall save the current adjustments and exit. Also, if the video controller changes video
mode while the OSD is active, the current settings shall be saved immediately, the OSD turned off, and the new
mode is displayed.
A. Menu Operation
Pressing the MENU button the first time brings up the first menu level. The (MENU) button is used to enter
and exit the OSD menu. Pressing the MENU button brings up the second menu level for the item selected.
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B. OSD Controls
Brightness Backlight Luminance of the LCD panel is adjusted.
Contrast A gain of R,G and B signal is adjusted.
Color Temperature 9300K, 8200K, 7500, 6500K, 5000K And User settings.
Auto Adjust Clock system auto adjustment, about under 5 sec.
Left/Right The indication screen is horizontally moved right and left (1 pixel pitch)
Up/Down The indication screen is vertically moved up and down (1 pixel pitch)
Pixel Clock The ratio of dividing frequency of the dot clock is adjusted.
Phase The phase of dot clock is adjusted.
OSD Language Select the language used for the OSD menu from between English, French, Italian,
Recall Defaults All data copy from factory shipment data.
OSD Position The OSD indication position can be selected.
3.7. Monitor Modes and Timing Capability:
Item Description
Deutsch, Spanish, Japan, Simple Chinese and Traditional Chinese.
3.7.1. Format and Timing
The monitor shall synchronize with any vertical frequency from 56 to 76 Hz, and with any horizontal frequency
from 30 to 81 KHz. If the input frequency is beyond the specified range, the monitor shall display a warning
screen indicating that the input frequency is out of range. Under no circumstances shall any combination of
input signals cause any damage to the monitor.
3.7.2. Factory Assigned Display Modes
There are 11 factory pre-set frequency video modes. These modes have a factory pre-set for all characteristics
affecting front-of-screen performance. When the system is powered-on, previously stored screen
parameters for a pre-defined mode will be recalled if the operating mode is one of those stored in memory. If
the operating mode is not one of those stored in memory, the monitor CPU will select the PRESET timing for a
mode that is the next lowest in horizontal scanning frequency to the mode being currently used. The screen
parameters may be adjusted by the use of the front bezel controls and then may be saved as a user defined
mode. The monitor shall include all the preset video timings shown in the following page.
3.7.3. Mode Recognition Pull-in
The monitor shall recognize preset modes within a range of +,- 1KHz whichever is less for horizontal ; and
within +,- 1Hz for vertical.
3.7.4. User Display Modes
In addition to the factory pre-set video modes, provisions shall be made to store up to 15 user modes. If the
current mode is a user mode, the monitor shall select its previously stored settings. If the user alters a setting,
the new setting will be stored in the same user mode. The user modes are not affected by the pre-set
command. If the input signal requires a new user mode, storage of the new format is automatically performed
during user adjustment of the display (if required).
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Preset Timing Chart
No
NOTE: (1)76Hz FV: monitor can display but doesn’t guarantee.≦
(2) FH＞=85KHz, or Fv＞=80Hz: Power Save (OSD warning invalid mode).
3.8. Controller Requirements
3.8.1. General Requirements
The monitor shall include a controller capable of converting the analog RGB signal from a standard WSXGA
resolution video controller in the CPU to a signal which can be displayed on the panel. The controller will
Chroma
Timing
1 102 VGA 720 x 400 70Hz 31.47 28.322 - +
2 103 VGA 640 x 480 60Hz 31.47 25.175 - 3 109 VESA 640 x 480 75Hz 37.5 31.5 - 4 116 VESA 800 x 600 60Hz 37.88 40 + +
5 110 VESA 800 x 600 75Hz 46.88 49.5 + +
6 118 VESA 1024 x 768 60Hz 48.36 65 - 7 141 VESA 1024 x 768 75Hz 60.02 78.75 + +
8 126 MAC 1152 x 864 75Hz 67.5 108 + +
9 179 SXGA 1280 x 1024 60Hz 64 108 + +
10 131 SXGA 1280 x 1024 75Hz 80 135 + +
11 333 WSXGA 1680 x 1050 60Hz 65.3 146.25 - +
Timing Modes, FV(Hz)
FH Pixel Rate Sync Polarity
(KHz) (MHz) H V
include a PLL, A/D converters, and other circuitry necessary to perform its function. The PLL shall be stable
enough to ensure that a static image from the CPU is placed in the same physical location on the flat panel in
each frame.
3.8.2. Video Stretching
The monitor shall contain provisions to “stretch” the video signal, so that an input signal from the computer in
any resolution smaller than 1680 x 1050 is automatically expanded to fill the entire screen.
3.8.3. Panel Timing and Interface
The controller supplied with the monitor shall control all panel timing. This controller shall adequately insulate
the monitor from the computer, so that no possible combination of input signals from the computer shall
cause damage to the flat panel or any other component of the monitor. The LCD panel interface shall support
the TFT standard.
3.9. DC - AC Inverter Requirements:
The frequencies used by the DC - AC inverter used to power the backlight shall be chosen so as to prevent any
noticeable effects on the flat panel (such as a rolling effect).
3.10. Power Supply Requirements
The AC to DC converter power supply for the monitor shall be an integrated power supply. This power supply shall
have an IEC receptacle for mains power input and provide sufficient power for the monitor, the backlight assembly
and the “Dell Sound bar”, and shall meet all requirements specified in Table 2.
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Table 2. AC TO DC Converter Requirements
Input Voltage Range
Input Frequency Range
Power Consumption
Line Fuse
Initial Cold Start
The operating range shall be from 90 to 132 and 195 to 240 VAC sinusoidal for all
models specified.
Input power frequency range shall be from 47.5 to 63Hz over the specified input
voltage range.
Power consumption for the monitor shall be less than 49W over the specified voltage
and frequency ranges. In power off mode the power consumption will be less than
1W (at 90VAC~240VAC).
The AC input shall be fused and become electrically open as a result on an unsafe
current level. The fuse may not be user replaceable.
The power supply shall start and function properly when under full load, with worst
case conditions of input voltage, input frequency, operating temperature, and cold
backlight lamps.
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Inrush Current
Hot Start Cycle
Under Voltage
Line Transient
3.11. Display Communications Channel
The inrush current must be limited to 42A when operated at 120VAC, and 80A when
operated at 220VAC. In - rush current is measured at an ambient temperature of 25°
C, with the unit temperature stabilized in the power - off
The power supply shall not be damaged when switched ON for one second and OFF
for one second for seven consecutive times after operating for one hour at full load,
25°C, and nominal input line voltage.
The power supply shall contain protection circuitry such that the application of an
input voltage below the minimum specified in this table shall not cause damage to
the power supply unit nor cause failure of the input
The power supply shall operate within IEC 801-4 (±1KV) and IEC 801 -5 (±2KV) for
the domestic U.S. Version. The UPS power supply shall operate and comply with CE
mark.
The monitor assembly shall provide a display communications channel that conforms to VESA DDC2B hardware
requirements. This configuration shall contain the 256-byte EDID file as specified by VESA E-EDID Standard. The
monitor contains a separate EEProm for each video input to store EDID information. Once the EDID is programmed
there is a write protection that is enabled so that the EEPROM cannot be overwritten.
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4. FLAT PANEL:
4.1. General Requirements
The panel used as the display device shall be a WSXGA resolution, 20” diagonal, TFT-LCD.
4.2. Panel Timings
The controller included with the monitor shall translate all video timings from the CPU that meet the timing
requirements listed in Panel specification into timings appropriate for the panel. Under no circumstances may the
controller supply the panel with timings that may result in damage. The controller shall insulate the panel from the
CPU, so that the panel shall always be driven per its own specification regardless of the timings being sent from the
CPU.
4.3. Polarizer Hardness
The outer face of the front polarizer panel shall be covered with a coating with a 3H hardness value, Haze 44%
(AMLCD).
4.4. Backlight Requirements
4.4.1. General Requirements
The backlight assembly shall be designed to support field replacement at the customer site or authorized service
center. The lamps shall have a continuous operating life of at least 50,000 hours at 25oC. The operating life is
defined as having ended when the illumination of light has reached 50% of the initial value. The lamps shall
extend a sufficient amount from the edge of the light guide that sputtering over the life of the lamps shall not
cause degradation of the luminance uniformity (such as non-illuminated bands along the edges of the display).
4.4.2. Lamps Startup Time
The backlight lamps shall start within 3 sec. of the time the monitor power switch is pressed or the monitor is
restarted from a power - down mode .The starting time shall stay below 3 sec. for the minimum expected life of
the lamps.
Test conditions are as follows:
Ambient Light ---------------------- < 1.0 lux.
Temperature-------------------------- 10oC
Inactive Time ----------------------- > 24 hours
4.5. Defects:
4.5.1. Visual Inspection
The LCD panel shall be inspected with all pixels set to white, black, red, green, and blue. The color variation,
brightness variation, and overall appearance must not be perceived as poor quality by Lite - On. Areas and / or
parameters considered questionable shall be subjected to detailed measurements.
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4.5.2. Display Degradation
Over the life of the product, variation of the parameters specified in Panel specification shall be maintained
within reasonable limits. The panel must not exhibit any significant defects while in operation (excluding the
CCFL operation). This does not in any way change the warranty given by the panel manufacturer.
4.5.3. Light Leakage
Except for the active display area, there shall be no light emission visible from any angle from any other part of
the display. For this test, the ambient illumination will follow the panel specification 300 to 700 lux.
4.5.4. Allowable Defects
No cosmetic defects are allowed except those specified below. The conditions of visual inspections are as
follows:
; Viewing distance is to be approximately 35cm.
; Ambient illumination is to be 300 to 500 lux.
; Viewing angle range shall be 160 degrees Horizontal and 160 degrees vertical typically.(AMLCD)
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; Defects not apparent within one minute shall be ignored.
4.5.5. Defect Terminology
Below table is the descriptive terms used in classifying defects.
Dark Spots/Lines Spots or lines that appear dark in the display patterns and are usually the result
of contamination. Defects do not vary in size or intensity (contrast) when contrast
voltage is varied. Contrast variation can be achieved through the use of varying
gray shade patterns.
Bright Spots/Lines Spots or lines appear light in the display patterns. Defects do not vary in size or
intensity (contrast) when contrast voltage is varied. Contrast variation can be
achieved through the use of varying gray shade patterns.
Polarizer Scratch When the unit lights, lines appear light (white) with display patterns dark and do
not vary in size. Physical damage to the polarizer does not damage the glass.
Polarizer Dent When the unit lights, spots appear light (white) with display patterns dark and do
not vary in size. Physical damage to the polarizer that does not damage the
glass.
Rubbing Line Horizontal or diagonal lines that appear gray with the display patterns dark and
may have resulted from an “ out of control “ rubbing process on the polyimide or
“ waves “ on the BEFs or prism sheets .
Newton Ring The “rainbow” effect caused by non-uniform cell thickness.
Mottling When the unit lights, variation / non – uniformity (splotchiness) appears light
(white) with the display and might vary in size.
Dim Line When the unit lights, line(s) in the minor (vertical) or major (horizontal) axis
appear dim, but not completely on or off.
Cross Lines Off When the unit lights , lines in both the minor and major axis do not appear.
Bright / Dark Dot A sub - pixel (R, G, B dot) stuck off / on (electrical).
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4.5.6. Smudges, Streaks and Smears
When viewing the panel oriented so as to maximize reflected light, there shall be no visible smudging,
streaking, smearing or other non-uniformity from contaminants, fingerprints, or defects in any of the visible
surfaces. This is independent of whether the unit is operating or off.
4.5.7. LCD Inspection
Put LCD panel on inspection table and illuminate the panel with a daylight fluorescent lamp located above the
panel surface such that the luminance at the LCD panel is between 1000 lux. and 1500 lux. Defect limits are
given as following.
Smaller of (L+W)/2 or L/20 + 2W
< 0.1mm Non countable N / A
0.1mm - 0.3mm 10 15mm
0.31mm - 0.5mm 10 15mm
0.51mm - 1.25mm 5 15mm
1.26mm - 2.5mm 3 25.4mm
2.51mm - 0.3mm 3 25.4mm
Greater than 3.75mm None Not applicable
Average Diameter
Acceptable Number Minimum Separation
Allowable distance between spots of two sizes is the minimum separation number for the smaller spot.
Therefore, if there are two spots, 1.30mm and 0.4mm in diameter, they must be at least 15mm apart.
Note: Per panel specification, over the life of the product, variation of parameters specified in
Panel specification shall be maintained within reasonable limits. Check supplier quality
inspection criteria for the detail information.
5. Optical Characteristics:
5.1. Brightness uniformity
The uniformity is determined by using a photometer (CA-210) to measure the 9 points luminance in front of monitor
after at least 30 minutes warm up. It shall be test at 1680x1050/60Hz mode and full white square pattern with contrast
and brightness in default value. The values specified are at an approximate distance 20 cm from the LCD surface and
at 0 viewing angle.
5.1.1. The 9 test points are defined as the right
photo.
5.1.2. The brightness uniformity is calculated as below :
Brightness uniformity 75≧ ％
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5.2. Contrast ratio (CR)
The contrast ratio is determined by using a photometer (CA-210) to measure the maximum and minimum luminance in
front of monitor after at least 30 minutes warm up. It shall be test at 1680x1050/60Hz mode and full white/full black
square pattern with contrast/brightness in default value. The values specified are at an approximate distance 20 cm
from the LCD surface and at 0 viewing angle. The contrast ratio is calculated as below:
CR = (Max. full white luminance) / (Max. full black luminance)
CR = 800: 1(typ)
5.3. Response time
The response time is defined as below:
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Tr + Tf: 5 msec typ.
5.4. Viewing angles
The viewing angles are measured at CR=10 as below:
Horizontal Left: 80 degrees typ. (M201EW02 V1);
Right: 80 degrees typ. (M201EW02 V1);
Vertical Up: 80 degrees typ. (M201EW02 V1);
Down: 80 degrees typ. (M201EW02 V1);
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5.5. Chromaticity
The color chromaticity is measured by a photometer (CA-210) at 1680x1050/60Hz mode and full white square pattern
with contrast/brightness in default value. The x and y co-ordinates for 9300K, 8200K, 7500K, 6500K and 5000K. Preset
mode shall be as below:
9300K Preset : 0.253 x 0.313 ; 0.268 y 0.328≦≦ ≦≦
7500K Preset : 0.269 x 0.3≦≦ 29 ; 0.285 y 0.3≦≦ 45
6500K Preset : 0.283 x 0.343 ; 0.299 y 0.359≦≦ ≦≦
5000K Preset: 0.314 x 0.≦≦ 375 ; 0.329 y 0.3≦≦ 89
8200K Preset: 0.262 x 0.≦≦ 322 ; 0.277 y 0.3≦≦ 37
5.6. Brightness
The uniformity is determined by using a photometer (CA-210) to measure luminance on the center of screen after at
least 30 minutes warm up. It shall be test at 1680x1050/60Hz mode and full white square pattern with contrast at
default and brightness at max conditions. The values specified are at an approximate distance 20 cm from the LCD
surface and at 0 viewing angle. The brightness at 6500K Preset mode shall be 240 cd/m² min. (M201EW02 V1)
Note: Per panel specification, over the life of the product, variation of parameters specification Panel
specification shall be maintained within reasonable limits. Check supplier quality inspection
criteria for the detail information.
6. Environmental Requirements:
6.1. Temperature Ranges
Operating Temperature (guaranteed functional performance): 0oC to 50oC
Operating Temperature (guaranteed optical performance): 5oC to 35oC
Shipping Temperature: -20oC to 60oC
Storage Temperature: -20oC to 60oC
6.2. Humidity
Operating (non-condensing) : 10% to 80%
Shipping (non-condensing) : 5% to 90%
Storage (non-condensing) : 5% to 90%
6.3. Altitude
Operating 0 to +12,000 feet [3,658m].
Equivalent to 14.7 to 10.1 psia.
Shipping (Non-Operating) 0 to +40,000 feet [12,192m].
Equivalent to 14.7 to 4.4 psia.
17
6.4. Vibration Test Procedure
6.4.1. Vibration System. Perform in accordance with Liteon Spec.
6.4.2. Fixturing. The packaged product shall be secured to the vibration table to prevent the package from moving off
the vibration surface during test.
6.4.3. Test Axes. The packaged product shall undergo random profile vibration on all six (6) surfaces for a duration of
30 minutes per surface.
6.4.4. Random Vibration Spectrum. The total random vibration spectrum energy shall be 1.15 Grms and follow
spectrum specified below.
Random Vibration Spectrum Break Points
Frequency (Hz) PSD , G
1 0.0001
4 0.01
100 0.01
200 0.001
6.4.5. Acceptance Criteria. The package and its contents should be inspected and evaluated for failure against the
2
/Hz
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Acceptance Criteria. Ref. Section 4.0 Packaged Product Testing.
7. RGB settings
The red, green and blue areas shall be measured at a digital input signal full white square pattern at 1680x1050,
fH=65.3kHz/fV=60Hz mode with default color temperature setting (Normal Preset = 6500K). The u´ and v´ co-ordinates for
R, G and B shall be setting as follows:
Red u´ 0.411, v´ 0.503≧≧
Green u´ 0.140, v´ 0.548≦≧
Blue u´ 0.200, v´ 0.224≦≦
8. Color grayscale linearity
The co-ordinates of color grayscale shall be measured at a digital input signal full grayscale square pattern at 640x480,
fH=31.5 kHz/fV=60Hz mode with default color temperature setting (Normal Preset = 6500K). The measured u´ and v´
co-ordinates at grayscale 255,225,195,165,135,105 should meet the spec. as follows :
Δu´v´= ((u´max–u´min)² + (v´max–v´min)²)½ 0.02≦
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