Acer AL1717 - Burn-In (Aging) Pattern; Warm up; Input Signal; Video Signal Input

Acer Service Manual
14
1.6 Burn-in (Aging) Pattern
1.6.1 Burn-in patterns are: full Red, Green, Blue, White and Black
1.6.2 Stop burn-in pattern by providing with video signal from D-sub or DVI-D connector
1.6.3 Enter or exit burn-in mode by setting “burn-in” to be “on” or “off” in the factory mode
1.7 Warm Up
All test units have to be done warm up after at least 2 hours in a room with temperature of 40±5°C.
(Except particular requirement)
2. INPUT SIGNAL
2.1 Video Signal Input
2.1.1 VESA Analog
The video input consists of red, green, and blue signals. The video signals are analog levels, where
0V corresponds to black and 700mV is the maximum signal amplitude. Input impedance of video
pins is 75 ohm ±1%.
Sync signal input
The capability of sync signal inputs shall include separate sync. Input impedance: 2k2 ohms the
signals are defined as follow:
Separate sync TTL level, Positive/Negative
2.1.2 Input signal mode
PRESET TEST MODE TIMING
Resolution H-Freq. (kHz) V-Freq. (Hz) Dot Clock (MHz) Mode
31.5 60.0 25.175
37.9 72.0 31.500
640 x 480
37.5 75.0 31.500
35.1 56.0 36.000
37.9 60.0 40.000
48.1 72.0 50.000
800 x 600
46.9 75.0 49.500
48.4 60.0 65.000
56.5 70.0 75.000
1024 x 768
60.0 75.0 78.750
64.0 60.0 108.000
1280 x 1024
80.0 75.0 135.000
VESA
IBM-AT
Compatible
machine
PC-9800 series
640 x 350 31.5 70.0 25.175
720 x 400 31.5 70.0 28.322
US/IBM Text
832 x 624 49.7 74.6 57.283
60.2 75.0 80.000
1024 x 768
48.8 60.0 64.000
Power Macintosh
series
2.1.3 VGA signal cable
15 pin D-sub VGA connector of signal cable.
2.1.4 Interface
Analog signal: The input signals are applied to display through D-sub cable.
Length: 1.8 m +/- 50 mm (fixed)
Connector type: D-sub male.
With DDC_2B pin assignments.