Acer NA23WABAS User manual
Table of Contents
Important Safety Notice------------------------------------------------------------------------------------- 01
01. Product Specification--------------------------------------------------------------------------------- 02
02. OSD Menu-----------------------------------------------------------------------------------------------14
03. Exploded Diagram
05.
Appendix I : User s Manual
Appendix II: User’s QSG
------------------------------------------------------------------------------------- 18
Troubleshooting----------------------------------------------------------------------------------------27
08. Block Diagram and schematic----------------------------------------------------------------------- 56
’
04. Assembly and Disassembly Procedures-----------------------------------------------------------20
06. Firmware Upgrade Procedure------------------------------------------------------------------------51
07. Writing EDID Procedure-------------------------------------------------------------------------------53
Appendix III : Spare Parts List
Appendix IV: Software Pack
Model ID:
Published by Wistron Corporation Printed in Taiwan © All rights reserved Subject to modification
18th-Nov.-2008
DBG DPBU IIDBG DPBU II
Service
ACER_LCD_V233H_SM081118V1
Safety Notice
Any person attempting to service this chassis must familarize with the chassis and be
aware of the necessary safety precautions to be used when serving electronic equipment containing
high voltage.
Service Manual
ACER
NA23WABAS
ProductAnnouncement:
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.
QualifiedRepairability:
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. Furthermore, the possible 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:
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 the
AC power cord.
To prevent the product away from water or exploded
in extremely high humility environment.
To ensure the continued reliability of this product,
use only original manufacturer’s specified parts.
To ensure following safety repairing behavior, put the
replaced part on the components side of PWBA, not
solder side.
!
!
!
!
To ensure using a proper screwdriver, follow the
torque and force listed in assembly and disassembly
procedures to screw and unscrew screws.
!
Using Lead-Free solder to well mounted the parts.!
!The fusion point of Lead-Free solder requested in the
degree of 220 C.°
Important Safety Notice
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1
ACER V233H
This model combine with two platform. See below
explanation.
1.Scaler IC:NT68627U used in VGA port. Using simply
word to define it(1A)
2.
3.Scaler IC:NT68671UMFG used in VGA ,DVI and HDMI
port .Using simply word to define it.(1A1D1H)
1A and 1A1D product specification:
Scaler IC:NTNT68667U used in VGA and DVI port. Using
simply word to define it(1A1D)
1.1 SCOPE
This document defines the design and performance
requirements for a 23W inch diagonal , flat panel monitor
.The display element shall be a 1920x1080 or a 2048x1152
resolution TFT-LCD (Thin Film Transistor Liquid Crystal
Display).16.7M colors(Hi-FRC) images are displayed on the
panel.
Video input signals are analog RGB (0.7Vp-p). 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 stored in memory( 21 factory , 9 users timing ).
This monitor operates normal by non-interlaced mode.
DDC (Display Data Channel) function is DDC2Bi
compliance.Power saving function complies with the DPMS
(Display Power Management Signaling) standard.
1.2 GENERAL REQUIREMENTS
1.2.1 Test Condition
Brightness level & contrast level max. Full white
pattern test mode following spec. Warm up more than
1 hr, ambient light < 10 Lux , Luminance meter Ca210
or BM7 or same equipment .
1.2.2 Test Equipment
The reference signal source is a calibrated Chroma
2237 video generator or higher. The use of other
signal generators during qualification and production is
acceptable provided the product complies with this
specification.
1.3 ELECTRICAL
This section describes the electrical requirement of the
monitor.
1. Product Specification
The LCD monitor consists of an interface board, a power board
and inverter board, a function key board.
The interface board will house the flat panel control
logic , brightness control logic, audio function control
(option), key function control, DDC and DC to DC
conversion to supply the appropriate power to the
whole board and LCD flat panel , and transmitting
LVDS signals into LCD flat panel module to drive the
LCD display circuit .
The power board will support main power DC5V to
interface board, and drive the two CCFLs (Cold
Cathode Fluorescent Tube).
The interface board provides the power ON / OFF
control over the power board.
Whole monitor to control the DPMS LED indicator to
function key board.
1.3.1 Interface Connectors
1.3.1.1 Power Connector and Cables
The AC input shall have an IEC/CEE-22 type male
power receptacle for connection to mains power.
The power cord shall be with length of 1.8 0.005
meters.
1.3.1.2 Video Signal Connectors and Cable
The signal cable shall be 1.8 0.005 meters long.
At the end of the cable shall be a molded-over,
shielded, triple row, 15 position, D-subminiature
connector. The CPU connection shall have captive
screw locks, which will be adequate for hand
tightening. The monitor connection may use small
screws.
ITEM SPEC
Frequency Analog:
H:30kHz~76kHz
V:55Hz~61Hz
Pixel clock 205MHz (Max)
Video Input Analog 0.7Vp-p
DisplayPixels 640x480(VGA)~2048x1152(WUXGA)
Signal Input
(Analog)
Sync Signal Separate SYNC for TTL (N or P)
Frequency Digital:
H:30kHz~76kHz
V:55Hz~61Hz
Pixel clock 165MHz (Max)
Video Input Analog 0.7Vp-p
Input Impedance 75Ω
Signal Input
(Digital)
DisplayPixels 640x480(VGA)~2048x1152(CVT-RB)
AC Input AC100V ~ AC240V 10% 50/60Hz, 3 pin AC power cord
Input connector D-SUB 15 pin, DVI-D
Connector
Audio Jack (OPTIONAL) Audio input 3.5Φ
Power Comsumption AC in 100V~240V Active 55W, power saving < 2W
Front Empowering, Auto Adjust, Adjust(-), Adjust(+), Menu,
Power
User’s Control
OSD Contrast, Brightness, Position, Clock, Phase, Analog/Digital,
Reset, Color, Language select, etc.
Factory 21Pre-Defined Timing
User 9
Plug and Play VESA DDC2Bi
Power Saving VESA DPMS
Input Signal Counter Tolerence ≦H1kHz, ≦V1Hz
2
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ACER V233H
1. Product Specification (continued)
1.3.1.3 Audio Jack (option)
This jack shall connect the audio input from
host computer.
1.3.2 Video Input Signals
Video Input Signal
D -S UB Pin D e scription
Pin Name Description
1 Red-Video Red video signal input.
2 Green-Video Green video signal input.
3 B lu e - V id e o B lu e vid e o sig na l inp u t.
4GND Ground
5 DDC-GND DDC ground for the VESA DDC2Bi function.
6 Red-GN D Analog signal ground for the Red video.
7 Green-GN D Analog signal ground for the Green video.
8 Blue- GN D Analog signal ground for the Blue video .
9 +5 V +5 V input from host system for the VESA DDC 2Bi function.
10 Sync-G N D Signal ground
11 GND Ground
12 DDC_SDA SDA signal input for the VESA DDCB2ifunction.
13 H-SYN C Horizontal signal input from the host system.
14 V- SYN C Vertical signal input from the host system.
15 DDC-SCL SCL signal input for the VESA DDC2Bi function.
Connector Pin Description
1.3.2.1 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 0 V corresponds to black ,
and 700 mV is the maximum signal amplitude for
the respective color, when each signal is
terminated by a nominal 75.0 ohms .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 impendence.
1.3.2.2 Video Signal Termination Impedance
This analog video signal termination shall be 75
1% which shall be resistive with a negligible reactive
component.
1.3.2.3 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 .
1.3.2.4 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 .
1.3.2.5 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 400 uA .
1.3.2.6 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 .
Ω
3
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ACER V233H
1. Product Specification (continued)
1.3.3 User Controls and Indicators
1.3.3.1 Power On / Off Switch
The monitor shall have a power control switch
visible and accessible on the front of the monitor .
The switch shall be marked with icons per IEC 417
, # 5007 and # 5009.The switch shall interrupt the
DC supply to the monitor.
1.3.3.2 Power Indicator LED
The monitor shall make use of an LED type
indicator located on the front of the monitor .
The LED color shall indicate the power states as
given in Table 1.
Function LED Color
Full Power Blue color
Sleep Orange color
Table 1
1.3.3.3 On-Screen Display
The Wistron On Screen Display system shall be
used, controlled by a Menu 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 turn off, and new video
mode is displayed.
ITEM CONTENT
AUDIO VOLUME To increase or decrease the sound level
BRIGHTNESS Back light Luminance of the LCD panel is adjusted.
CONTRAST A gain of R , G and B signal is adjusted.
AUTO CONTRAST A gain of R , G and B signal auto adjust.
CLOCK The ratio of dividing frequency of the dot clock is adjusted.
PHASE The phase of the dot clock is adjusted.
H-POSITION The indication screen is horizontally moved right and left (1 Pixels pitch).
V-POSITION The indication screen is vertically moved up and down (1 Pixels pitch).
AUTO ADJUST Clock system auto adjustment, about under 8 sec.
COLOR BALANCE Select three kinds of modes. ( USER /WARM / Cold ).
OSD POSITION The OSD indication position can be adjusted.
OSD LANGUAGE
Select the language used for the OSD menu among English , French ,
Italian , Deutsch and Spanish.. . . .EMEA. . .
RECALL DEFAULTS All data copy from factory shipment data.
OSD DURATION Adjust OSD menu off time range from10~120 second.
POWER-SAVE Back light of the LCD panel is cut when the signal is not input (AC line
power consumption 2W or less).
INFORM ATION The frequency of the horizontal / vertical synchronizing signal under the
input is indicated.
※NOTE : OSD MENU SEE APPENDIX A
1.3.4 Monitor Modes and Timing Capability
1.3.4.1 Format and Timing
The monitor shall synchronize with any vertical
frequency from 55 to 61 Hz , and with any
horizontal frequency from 30 to 76KHz. If the input
frequency is out of the above – 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 .
1.3.4.2 Factory Assigned Display Modes
There are 18 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.( Please
see Note. (3) )
1.3.4.3 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.
1.3.4.4 User Display Modes
In addition to the factory pre-set video modes,
provisions shall be made to store up to 9 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).( Please
see Note.(4) )
4
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ACER V233H
1. Product Specification (continued)
Polarity
Item Resolution H-Sync
(kHz)
V-sync
(Hz)
Band Width
(MHz) HV Source
1 640 х 480 31.469 59.94 25.175 - - VGA
2 800 х 600 35.156 56.250 36 + + VESA
3 800 х 600 37.879 60.317 40 + + VESA
4 1024 х 768 48.363 60.004 65 - - VESA
5 1280 х 960 60 60 108 + + VESA
6 1280 х 1024 63.981 60.02 108 + + VESA
7 1440 х 900 55.469 59.01 88.75 + - CVT-RB
8 1440 х 900 55.935 59.887 106.5 - + CVT
9 1280 х 720 45 60 74.25 - + CEA
10 1280 х 800 49.702 59.810 83.5 - + CVT
11 1600 х 1200 75 60 162 + + VESA
12 1600 х 1200 74.006 59.924 130.25 + - CVT-RB
13 1680 х 1050 65.29 59.954 146.25 - + CVT
14 1680 х 1050 64.674 59.883 119 + - CVT-RB
15 1920 х 1200 74.038 59.95 154 + - CVT-RB
16 1920 х 1200 74.556 59.885 193.25 - + CVT
17 2048 х 1152 71.52 60 197.967 - + CVT
18 2048 х 1152 70.992 59.909 156.75 + - CVT-RB
Digital inputs (DVI-D: Conflicting video- and PC-timings are to
be treated as Video timings with one exception:
640x480p/60Hz timing to be treated as PC-timing.
Analog input (VGA) treats all timings as PC-timings.
PRESET PC TIMINGS (ANALOG AND DIGITAL INPUTS)
(For 1920x1080 LTM230HT01 projects)
PRESET PC TIMINGS (ANALOG AND DIGITAL
INPUTS) (For 2048x1152 LTM230TT01 projects)
Polarity
Item Resolution H-Sync
(kHz)
V-sync
(Hz)
Band Width
(MHz) HV Source
1 640 х 480 31.469 59.941 25.175 - - VGA
2 640 х 480 35 66.66 30.24 - - VESA
3 640 х 480 37.861 72.809 31.5 - - VESA
4 720 х 400 31.469 70.087 28.322 - + VESA
5 800 х 600 35.156 56.250 36 + + VESA
6 800 х 600 37.879 60.317 40 + + VESA
7 800 х 600 48.077 72.188 50 + + VESA
8 1024 х 768 48.363 60.004 65 - - VESA
9 1024 х 768 56.476 70.069 75 - - VESA
10 1152 х 864 67.5 75 108 + + VESA
11 1280 х 720 44.955 59.94 74.176 - + CEA
12 1280 х 800 49.702 59.810 83.5 - + CVT
13 1280 х 960 60 60 108 + + VESA
14 1280 х 1024 63.981 60.020 108 + + VESA
15 1366 х 768 47.712 60.015 85.5 - + CVT
16 1440 х 900 55.935 59.887 106.5 - + CVT
17 1680 х 1050 65.290 59.954 146.25 + - CVT
18 1600 х 1200 75 60 162 + + VESA
19 1920 х 1080 67.158 59.963 173 + - CVT
20 1920 х 1080 67.5 60 148.5 + - CEA
21 1920 х 1080 66.587 59.934 138.5 + - CVT-RB
Digital inputs (DVI-D: Conflicting video- and PC-timings are to
be treated as Video timings with one exception:
640x480p/60Hz timing to be treated as PC-timing.
Analog input (VGA) treats all timings as PC-timings.
1.3.5 Controller Requirements
1.3.5.1 General Requirements
The monitor shall include a controller capable of
converting the analog RGB signal from a standard
2048x1152/ 1920x1080 resolution video controller
in the CPU to a signal which can be displayed on
the panel. The controller will include a PLL,A/D
converters, LVDS transmitter 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.
1.3.5.2 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 2048 x
1152 is automatically expanded to fill the entire
screen.
1.3.5.3 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.
1.3.6 DC - AC Inverter Requirements
The DC-AC inverter is on the power board. 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).
1.3.7 Power Supply Requirements
The AC to DC converter power supply for the monitor
shall be an external AC to DC converter ”brick” This brick
shall have an IEC receptacle for main power input and a
pin - in ---socket for DC power out. The brick shall provide
sufficient power for both the monitor and the backlight
assembly, and shall meet requirements specified in Table
2.
5
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ACER V233H
1. Product Specification (continued)
1.3.8 Display Communications Channel
The monitor assembly shall provide a display
communications channel that conforms to VESA
DDC2Bi hardware requirements. This configuration
shall contain the 128-byte EDID file as specified by
VESA EDID standard. The monitor should not write to
the EDID file for the first two minutes of operation
following power-up UNLESS some action taken by the
user or the host CPU forces the write (for instance,
requesting the serial number via the OSD).
Furthermore, it is recommended that CMOS switches
be incorporated to isolate the DDC IC from outside
connections while the EDID Fault Management is
being updated. This is to prevent corruption of the
data by attempts to read the data while it is being
changed.
1.3.9 Firmware Update Function (same ISP function)
The update firmware need through from the D-Sub
connector, use DDC I2C bus to do update firmware.
1.4. ELECTRICAL
1.4.1.General Requirements
The panel used as the display device shall be an
2048 x 1152 or an 1920x1080 resolution 23W, TFT
LCD. This panel shall be approved for use in this
monitor.
1.4.2. 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 it's own specification regardless of the timings being
sent from the CPU.
1.4.3. Polarizer Hardness
The outer face of the front polarizer panel shall be
covered with a coating witha#3hardness value .
1.4.4. Backlight Requirements
1.4.4.1 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 25 . 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).
1.4.4.2 Lamps Startup Time
The backlight lamps shall start about 2 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 about 2 sec. for the
minimum expected life of the lamps.
Test conditions are as follows :
Ambient Light ---------------------- < 1.0 lux
Temperature-------------------------- 10
Inactive Time ----------------------- > 24 hours
1.4.5.Defects
1.4.5.1 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 Wistron . Areas and / or parameters
considered questionable shall be subjected to
detailed measurements .
℃
℃
6
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ACER V233H
1. Product Specification (continued)
1.4.5.2 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 .
1.4.5.3 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 must
follow panel's specification.
1.4.5.4 Allowable Defects
No cosmetic defects are allowed except those specified
below. The conditions of visual inspections are as
follows :
For 24W Series.
Viewing distance is to be approximately 35-50cm
Ambient illumination is to be 300 to 700 lux.
Viewing angle shall be at 90 degree.
Defects not apparent within one minute shall be
ignored.
1.4.5.5 Defect Terminology
Table 3 gives the descriptive terms used in classifying
defects.
Table 3
Dark / Spots / Lines
Spots or lines that appea r dark in the displa y patterns and are
usually the resu lt of contamination. D efects 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 that appe ar light in th e display patterns.
Defects do not vary in size or intensity (contrast) w hen
contrast voltage is varied. Contrast variation can be achieved
through the u se of varying gray shade patterns.
Polarizer Scratch
W hen the un it lights, lin es ap pea r light (w hite ) w ith display
patterns dark and do not vary in size. Physical damage to the
polarizer that does not damage the glass
Polarizer Dent
W hen 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 R ing The “rainbow” effect caused b y non-uniform cell thickness.
M ottling
W hen the unit lights, variation / non – uniformity
(splotc hiness) appears light (w hite ) with th e display a nd
might vary in size.
Dim Line W hen the un it lights, lin e(s) in the m onitor (vertical) or m ajor
(horizontal) axis appear dim, but not completely on or off.
Cross Lines Off W hen the unit lights, lin es in both the minor and m ajor axis
do not appear.
Bright / Dark Dot A sub – pixel (R,G ,B dot) stuck off / on (electrical).
1.4.5.6 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 .
1.4.5.7 Other Defects
Undefined defects that are considered to be
rejectable by Wistron will be reviewed by Wistrin as
they become apparent. These panels will be referred
to the Wistron Corporate / Manufacturer Purchasing
Agreement for disposition.
1.4.5.8 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 in Table 4 .
Table 4
Average Diameter smaller of
(L+W)/2 or L/20+2W Acceptable Number Minimum Separation
< 0.1mm Non countable N / A
0.1mm~0.3mm 10 15mm
0.31 mm ~ 0.5 mm 10 15 mm
0.51 mm ~ 1.25 mm 5 15 mm
1.26 mm ~ 2.5 mm 3 25.4 mm
2.51 mm ~ 3.75 mm 3 25.4 mm
Greater than 3.75 mm NONE Not applicable
Note : 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.
1.5 Optical Characteristics
Depends on the LCD supplier's spec. Details refer to QA
Inspection Spec.
7
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ACER V233H
1. Product Specification (continued)
1A1D1H product specification:
1.1 SCOPE
This document defines the design and performance
requirements for a 23W inch diagonal , flat panel monitor
.The display element shall be a 1920x1080 resolution TFT-
LCD (Thin Film Transistor Liquid Crystal Display).16.7M
color(Hi-FRC) images are displayed on the panel.
Video input signals are analog RGB (0.7Vp-p). 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 stored in memory( 22 factory mode).
This monitor operates normal by non-interlaced mode.
DDC (Display Data Channel) function is DDC2Bi
compliance.Power saving function complies with the DPMS
(Display Power Management Signaling) standard.
1.2 GENERAL REQUIREMENTS
1.2.1 Test Condition
Brightness level & contrast level max. Full white
pattern test mode following spec. Warm up more than
1 hr, ambient light < 10 Lux , Luminance meter Ca210
or BM7 or same equipment .
1.2.2 Test Equipment
The reference signal source is a calibrated Chroma
2237 video generator or higher. The use of other
signal generators during qualification and production is
acceptable provided the product complies with this
specification.
1.3 ELECTRICAL
This section describes the electrical requirement of the
monitor.
The LCD monitor consists of an interface board, a power board
and inverter board, a function key board.
The interface board will house the flat panel control
logic , brightness control logic, audio function control
(option), key function control, DDC and DC to DC
conversion to supply the appropriate power to the
whole board and LCD flat panel , and transmitting
LVDS signals into LCD flat panel module to drive the
LCD display circuit .
The power board will support main power DC5V to
interface board, and drive the two CCFLs (Cold
Cathode Fluorescent Tube).
The interface board provides the power ON / OFF
control over the power board.
Whole monitor to control the DPMS LED indicator to
function key board.
1.3.1 Interface Connectors
1.3.1.1 Power Connector and Cables
The AC input shall have an IEC/CEE-22 type male
power receptacle for connection to mains power.
The power cord shall be with length of 1.8 0.005
meters.
1.3.1.2 Video Signal Connectors and Cable
The signal cable shall be 1.8 0.005 meters long.
At the end of the cable shall be a molded-over,
shielded, triple row, 15 position, D-subminiature
connector. The CPU connection shall have captive
screw locks, which will be adequate for hand
tightening. The monitor connection may use small
screws.
IT EM SP EC
Frequency Analog:
H:30kHz~94kHz
V: 5 0H z~ 7 5H z
Pixel cloc k 205M Hz (M a x)
Video Input Analog 0.7Vp-p
DisplayPixels 640x480(VGA)~1920x1080
Signal Input
(Analog)
Sync Signal Separate SYNC for TTL (N or P)
Frequency Dig ital:
H:30kHz~94 kHz
V: 5 0H z~ 7 5H z
Pixel cloc k 165M Hz (M a x)
Video Input TMDS
Input Impedance 75Ω
Signal Input
(D ig it al )
DisplayPixels 640x480(VGA)~1920x1080
AC Input AC100V ~ AC240V 10% 50/60Hz, 3 pin AC power cord
Input connector D-SUB 15 pin, DVI-D & HDMI
Connector
Audio Jack (OPT IONA L) Audio input 3.6Φ
Power Comsu mption AC in 100V~240V Active 55W, power saving < 2W
Front Empowering,Auto Adjust,Adjust(-), Adjust(+), Menu,
Power
User’s Control
OSD Contrast, Brightness, Position, Clock, Phase,Analog/Digital,
Reset, Co lor, Language select, etc.
Factory 22Pre-Defined Timing
User 9
Plug and Play VESA DDC2Bi
Power Sav ing VESA DPM S
Input Signal Counter Tolerance ≦H1kHz, ≦V1Hz
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ACER V233H
1. Product Specification (continued)
1.3.1.3 Audio Jack (option)
This jack shall connect the audio input from
host computer.
1.3.2 Video Input Signals
D-SUB Pin Description
Pin N ame D escription
1 Red-Video Red video signal input.
2 Green-Video Green video signal input.
3 B lu e - V id e o B lu e v id e o s ig n a l in p u t .
4GND Ground
5 DDC-GND DDC ground for the VESA DDC2Bifunction.
6 Red-GN D Analog signal ground for the Red video.
7 Green-GN D Analog signal ground for the Green video.
8 B lu e - G N D A n a lo g s ig n a l g r o u n d fo r t h e B lu e v id e o .
9 + 5V + 5V input from host system for the V ES A DD C 2Bi function.
1 0 S ync -G N D S ignal gro und
11 GN D Ground
12 DDC_SDA SDA signalinput for the VESA DDC B2i function.
13 H-S YN C Horizontal signal input from the host system.
1 4 V -S Y N C V e rtic al s ignal input fro m the host system .
15 DDC -SC L S CL signal input for the VESA DDC 2Bi function.
Connector Pin D escription
1.3.2.1 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 0 V corresponds to black ,
and 700 mV is the maximum signal amplitude for
the respective color, when each signal is
terminated by a nominal 75.0 ohms .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 impendence.
1.3.2.2 Video Signal Termination Impedance
This analog video signal termination shall be 75
1% which shall be resistive with a negligible reactive
component.
1.3.2.3 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 .
1.3.2.4 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 .
1.3.2.5 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 400 uA .
1.3.2.6 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 .
Ω
NO. Symbol Item Min Normal Max Unit Remark
1 Fh Scanning Horizontal Frequency 30 94 kHz Minimum Range
2 Fv Scanning Vertical Frequency 50 75 Hz Minimum Range
3 Vih Hi Level Input 2 5 Note 1)
4 Vil Low Level Input 0 0.8 V Note 1)
5 Video RGB Analog Video Level 0.0 0.7 1.0 V 75? to Ground
Note1) Schmitt-Triggers Input , Supported 3.3V device H ( & V) sync output from PC
9
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ACER V233H
1. Product Specification (continued)
1.3.3 User Controls and Indicators
1.3.3.1 Power On / Off Switch
The monitor shall have a power control switch
visible and accessible on the front of the monitor .
The switch shall be marked with icons per IEC 417
, # 5007 and # 5009.The switch shall interrupt the
DC supply to the monitor.
1.3.3.2 Power Indicator LED
The monitor shall make use of an LED type
indicator located on the front of the monitor .
The LED color shall indicate the power states as
given in Table 1.
Function LED Color
Full Power Blue color
Sleep Orange color
Table 1
1.3.3.3 On-Screen Display
The On Screen Display system shall be used,
controlled by a Menu 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 save immediately, the
OSD turn off, and new video mode is
displayed.
1.3.4 Monitor Modes and Timing Capability
1.3.4.1 Format and Timing
The monitor shall synchronize with any vertical
frequency from 50 to 75 Hz , and with any
horizontal frequency from 30 to 94KHz. If the input
frequency is out of the above – 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 .
1.3.4.2 Factory Assigned Display Modes
There are 22 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.( Please
see Note. (3) )
1.3.4.3 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.
1.3.4.4 User Display Modes
In addition to the factory pre-set video modes,
provisions shall be made to store more than 9
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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ACER V233H
1. Product Specification (continued)
PRESET PC TIMINGS (ANALOG AND DIGITAL
INPUTS)
Analog input (VGA) treats all timings as PC-timings.
1.3.5.3 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.
1.3.6 DC - AC Inverter Requirements
The DC-AC inverter is on the power board. 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).
1.3.7 Power Supply Requirements
The AC to DC converter power supply for the monitor
shall be an external AC to DC converter ”brick” This brick
shall have an IEC receptacle for main power input and a
pin - in ---socket for DC power out. The brick shall provide
sufficient power for both the monitor and the backlight
assembly, and shall meet requirements specified in Table
2.
Polarity
Item Reso lution H-Sync
(kHz)
V- sy nc
(Hz)
Band Width
(MHz) HV Source
1640 х 480 31.5 60 25.175 - - VGA
2640 х 480 35 67 30.24 - - MAC
3640 х 480 37.9 72 31.5 - - VESA
4720 х 400 31.5 70 28.322 - + VGA
5800 х 600 35.2 56 36 + + VESA
6800 х 600 37.9 60 40 + + VESA
7800 х 600 48.1 72 50 + + VESA
81024 x 600 37.3 60 49 - + CVT
91024 х 768 48.4 60 65 - - VESA
10 1024 х 768 56.5 70 75 - - VESA
11 1152 х864 67.5 75 108 + + VESA
12 1280 х 720 44.9 60 74.17 + + VESA
13 1280 х 800 49.7 60 83.5 - + CVT
14 1280 х 960 60 60 108 + + VESA
15 1280 х 1024 64 60 108 + + VESA
16 1360 х 768 47.7 60 85.5 + + VESA
17 1440 х 900 55.9 60 106.5 - + CVT
18 1600 х 1200 75 60 162 + + VESA
19 1680 х 1050 65.3 60 146.25 - + CVT
20 1920 х 1080 67.2 60 173 - + CVT
21 1920 х 1080 67.5 60 148.5 + + CEA
22 1920 х 1080 66.6 60 138.5 + - CVT-RB
PRESET VIDEO TIMING(DIGITAL INPUT)
1.3.5 Controller Requirements
1.3.5.1 General Requirements
The monitor shall include a controller capable of
converting the analog RGB signal from a standard
1920x1080 resolution video controller in the CPU
to a signal which can be displayed on the panel.
The controller will include a PLL,A/D converters,
LVDS transmitter 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.
1.3.5.2 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 1920 x
1080 is automatically expanded to fill the entire
screen.
CEA-861 H-Back V-Back H-Freq. V-Freq. P-Freq. Pol.
-c-code H-Active V-Active I/P H-Total Porch H-Width V-Total Porch V-Width (kHz) (Hz) (MHz) H V
1 640 480 P 800 48 96 525 33 2 31.5 60 25.2 - -
2,3 720 480 P 858 60 62 525 30 6 31.5 60 27.027 - -
4 1280 720 P 1650 220 40 750 20 5 45 60 74.25 + +
5 1920 1080 I 2200 148 44 1125 15 5 33.75 60 74.25 + +
16 1920 1080 P 2200 148 44 1125 36 5 67.5 60 148.5 + +
17,18 720 576 P 864 68 64 625 39 5 31.25 50 27 - -
19 1280 720 P 1980 220 40 750 20 5 37.5 50 74.25 + +
20 1920 1080 I 2640 148 44 1125 15 5 28.125 50 74.25 + +
31 1920 1080 P 2640 148 44 1125 36 5 56.25 50 148.5 + +
11
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ACER V233H
1. Product Specification (continued)
1.3.8 Display Communications Channel
The monitor assembly shall provide a display
communications channel that conforms to VESA
DDC2Bi hardware requirements. This configuration
shall contain the 128-byte or 256-byte EDID file as
specified by VESA EDID standard. The monitor should
not write to the EDID file for the first two minutes of
operation following power-up UNLESS some action
taken by the user or the host CPU forces the write (for
instance, requesting the serial number via the OSD).
Furthermore, it is recommended that CMOS switches
be incorporated to isolate the DDC IC from outside
connections while the EDID Fault Management is
being updated. This is to prevent corruption of the
data by attempts to read the data while it is being
changed.
1.3.9 Firmware Update Function (same ISP function)
The update firmware need through from the D-Sub
connector, use DDC I2C bus to do update firmware.
1.4. ELECTRICAL
1.4.1 General Requirements
The panel used as the display device shall be an
1920x1080 resolution 23W, TFT LCD. This panel shall
be approved for use in this monitor.
1.4.2. 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 it's own specification regardless
of the timings being sent from the CPU.
1.4.3.Polarizer Hardness
The outer face of the front polarizer panel shall be
covered with a coating witha#3hardness value .
1.4.4.Backlight Requirements
1.4.4.1 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 25 . 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).
1.4.4.2 Lamps Startup Time
The backlight lamps shall start about 2 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 about 2 sec. for the
minimum expected life of the lamps.
Test conditions are as follows :
Ambient Light ---------------------- < 1.0 lux
Temperature-------------------------- 10
Inactive Time ----------------------- > 24 hours
1.4.5.Defects
1.4.5.1Visual 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
.Areas and / or parameters considered
questionable shall be subjected to detailed
measurements .
1.4.5.2 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 .
1.4.5.3 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 must follow panel's
specification.
℃
℃
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ACER V233H
1. Product Specification (continued)
1.4.5.4 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 35-50cm
Ambient illumination is to be 300 to 700 lux. Viewing
angle shall be at 90 degree. Defects not apparent within
one minute shall be ignored.
1.4.5.5 Defect Terminology
Table 3 gives the descriptive terms used in classifying
defects.
Table 3
1.4.5.6 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 .
1.4.5.7 Other Defects
Undefined defects that are considered to be rejectable
will be reviewed as they become apparent. These
panels will be referred to the Corporate / Manufacturer
Purchasing Agreement for disposition.
1.4.5.8 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 in Table 4 .
Table 4
Average Diameter smaller of
(L+W)/2 or L/20+2W Acceptable Number Minimum Separation
< 0.1mm Non countable N / A
0.1mm~0.3mm 10 15mm
0.31 mm ~ 0.5 mm 10 15 mm
0.51 mm ~ 1.25 mm 5 15 mm
1.26 mm ~ 2.5 mm 3 25.4 mm
2.51 mm ~ 3.75 mm 3 25.4 mm
Greater than 3.75 mm NONE Not applicable
Note : 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.
1.5 Optical Characteristics
Depends on the LCD supplier's spec. Details refer to QA
Inspection Spec.
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 that 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
W hen the unit lights, lines appear light (w hite) w ith display
patterns dark and do not vary in size. Physical dam age to the
polarizer that does not damage the glass
Polarizer Dent
W hen 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 m ay 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.
M ottling
W hen the unit lights, variation / non – uniformity
(splotchiness) appears light (w hite) w ith the display and
might vary in size.
Dim Line W hen the unit lights, line(s) in the m onitor (vertical) or m ajor
(horizontal) axis appear dim, but not completely on or off.
Cross Lines Off W hen 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).
13
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ACER V233H
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