Product Specification; General Requirements; Test Condition; Test Equipment - Acer A221HQV Service Manual

ACER A211H/A221HQ
2
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This model combine with three platforms. See below
explanation.
1. Scaler IC: RTD2482D used in VGA, DVI and HDMI port.
Using simply word to define it.(1A1D1H)
2. Scaler IC: RTD2281 used in VGA and DVI port. Using simply
word to define it.(1A1D)
3. Scaler IC: RTD2280L used in VGA port. Using simply word to
define it.(1A)
1.1 Scope:
This document defines the design and performance
requirements for the 21.5" wide flat panel monitor. The
display elements shall be a 21.5" inch diagonal, UXGA
(1920 x1080) resolution TFT-LCD display .Video input
signals include D-sub and digital DVI-D , HDMI and
DP(DisplayPort) depends on different model. Power saving
function complies with the VESA DPMS (Display Power
Management Standard).
General display parameters:
Display Area
Resolution
Display Color Number
Display Type
Contrast Ratio
Brightness
Response Time
Pixel Pitch
Vertical Viewing
Horizontal Viewing

1.2 General Requirements:

1.2.1 Test Condition:

Normal test condition is that brightness level set at
Max. and contrast level set default. Test pattern is full
white pattern. The warm up time is more than 30
minutes. Ambient light should be less than 1 Lux.

1.2.2 Test Equipment:

The reference signal source is a calibrated Chroma
2326 or Quantum 801GD video generator. The use of
compatible generators during qualification and
production is acceptable.
Luminance meter is Minolta CA210, TOPCON BM7 or
compatible equipment.
1.3 Electrical:
This section describes the electrical requirement of the
monitor. Below is the block diagram.

1. Product Specification

21.5" diagonal
476.64mm(H)x268.11mm(V)
1920 x 1080 pixels
16.7M colors(6bit Hi FRC)
a-Si TFT active-matrix
1000 : 1 typ.
250cd/m2 typ.
(Ton + Toff) 5 ms typ.
0.248mm(H) x 0.248mm(W)
160 degrees typ, CR>10
170 degrees typ, CR>10
CCFL
DC 5V
Power Board
AC to DC Adapter
DC to AC Inverter
Audio
AMP
(Option)
Audio line input
Speaker
line input
1W*2
Speaker Audio Source
AC-IN
(Option)
This LCD monitor includes an interface board, a power
board and a function key board.
The interface board controls the TFT panel control logic,
brightness control logic, and DC-DC conversion to supply
the appropriate power to the whole board and LCD panel.
The LVDS signals transmit video data to LCD Module to
drive the LCD display circuit.
The power board will provide the DC power to the interface
board, LCD panel and inverter board.
The function key board is used for OSD control, monitor
power ON/OFF and the LED indicator for power status.
This monitor meets Energy Efficiency grade 2 of China.
ITEM
Frequency Ranges
Max Pixel clock
Analog Signal Input
Video input
(VGA)
RGB Input Impedance
Sync Input Signal
Sync Input Impedance
Frequency Ranges
Digital Signal Input
Max Pixel clock
(DVI&HDMI)
Input Level
Input Impedance
AC power
Connectors
Input connectors
Audio Jack (OPTIONAL) Audio input 3.5Ö
AC IN 100~240V
Normal Operation
Power Consumption
Power Saving
Power Off
User's Control Front Panel Buttons
Dimming control range
(max-min/max) x100%
Preset Timing
Pre-Defined Timing
User's Timing
Plug and Play
Power Saving
Input Signal Counter tolerance
LCD Flat Panel
Panel data & control. DC power
Interface Board
Flat Panel Controller,DDC
Video Signal input& DDC Function key input
Function Key
Host Computer
Board
SPEC
H 31kHz ~ 82kHz
V 56Hz ~ 75Hz
210MHz
0.7Vp-p
75Ù
Separate SYNC, Composite Sync
2.4KÙ(1A1D1H), 50Ù(1A1D/1A)
H 31kHz ~82kHz
V 56Hz ~ 75Hz
165MHz
150mV<=Vp-p<=1560mV
Input Impedance 100Ù per pair
AC 100V ~ AC 240V ± 10% 50/60Hz,
3 pin AC power cord
D-SUB 15pin, DVI-D 24pin, HDMI
19pin
30W Max(with audio)
< 1W
< 1W (90VAC~264VAC)
Right, Left, MENU, AUTO,E,Power
35%typical, 65%min
13
9
VESA DDC2B
VESA DPMS
H ±1kHz, V ±1 Hz