Acer RA19WAANU Service Manual page 6

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) )
Preset timing Chart
Preset Timing Chart
H-Sync
Item No Resoulution
(KHz)
1 T103 640x480@60Hz 31.469
2 T173 640x480@72Hz 37.861
3 T109 640x480@75Hz 37.500
4 T182 640x480@66.66Hz 35
5 T102 720x400@70Hz 31.469
6 T104 800x600@56Hz 35.156
7 T116 800x600@60Hz 37.879
8 T117 800x600@72Hz 48.077
9 T110 800x600@75Hz 46.875
10 T108 832x624@74.55Hz 49.722
11 T118 1024x768@60Hz 48.363
12 T157 1024x768@70Hz 56.476
13 T141 1024x768@75Hz 60.023
14 T203 1152x870@75Hz 68.700
15 T126 1152x864@75Hz 67.5
16 T161 1280x960@60Hz 60
17 T179 1280x1024@60Hz 63.981
18 T131 1280x1024@75Hz 79.976
19 T339 1280x720@60Hz 44.955
20 T213
1280x800@60Hz 49.702
21 T278
1366x768@60Hz 47.712
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
SXGA 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. Product Specification (continued)
V-Sync Band Width Polarit
Source
(KHz) (MHz)
H V
59.941 25.175 - - VESA
72.809 31.500 - - VESA
75.000 31.500 - - VESA
66.66 30.24 - - MAC
70.087 28.322 - + VGA
56.250 36.000 + + VESA
60.317 40.000 + + VESA
72.188 50.000 + + VESA
75.000 49.500 + + VESA
74.55 57.28 - - VESA
60.004 65.000 - - VESA
70.069 75.000 - - VESA
75.029 78.750 + + VESA
75.000 84.520 - -
75 108 + +
60 108 + + VESA
60.020 108.000 + + VESA
75.025 135.000 + + VESA
59.940 74.176 + +
+ +
59.810 83.500
- -
59.790 85.500
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 1366 x
768 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.
Table 2. AC TO DC Converter Requirements
AC to DC Converter Requirements
The operating range shall be from 90 to 132 and 195 to 265 AVC
Input Voltage Range
sinusoidal for all models specified.
Input power frequency range sha;; be from 47. 5 to 63 Hz over the
Input Frequency Range
specified input voltage range.
Power consumption for the monitor shall be less than 30W over the
Power Consumption specified voltage and frequency ranges. In suspend or sleep mode
the power consumption will be less than 2W.
The AC input shall be fused and become electrically open as a result
Line Fuse
on an unsafe current level. The fuse many not be user replace
The power supply shall start and function properly when under full
Initial Cold Start load, with worst case conditions of input voltage, input frequenct,
operating te mperature, and cold backlight lamps.
The inrush current must be limited to 30A when operated at
120VAC, and 50A when operated at 220VAC. Inrush current is
Inrush Current
measured at an ambient temperature of 25
temperature stabilized in the power -off.
The power supply shall be damaged when switched ON for one
second and OFF for one second for seven consecutive after
Hot Start Cycl e
operating for one hour at full load, 25
voltage.
The power supply shall contain protectio n circuitry such that the
application of an input voltage below the minimum specified in this
Under Voltage
table shall not cause damage to the power supply unit nor cause
failure of the input.
The power supply shall o perate within IEC 801 - 4 (± 1KV) and IEC
Line Transient 801-5 (± 2KV) for the domestic U.S. version. The UPS power
supply shall operate and comply with CE mark.
ACER X193HQ
Go to cover page
Table 2
able.
o C, with the unit
o C, and nominal input line
5