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Acer AL2017 サービスマニュアル
Acer
1.6 Burn-in (Aging) Pattern
1.6.1 Burn-in patterns are: full Red, Green, Blue, White and Blac
1.6.2 Stop burn-in pattern by providing with video signal from D-sub 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
2.1.2 Input signal mode
PRESET TEST MODE TIMING
Resolution
640 x 480
800 x 600
1024 x 768
1152 x 864
1280 x 960
1280 x 1024
1400 x 1050
640 x 480
832 x 624
1152 x 870
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.
TTL level, Positive/Negative
H-Freq.
V-Freq.
(kHz)
(Hz)
31.5
60.0
37.9
72.0
37.5
75.0
35.1
56.0
37.9
60.0
48.1
72.0
46.9
75.0
48.4
60.0
56.5
70.0
60.0
75.0
67.5
75.0
60.0
60.0
64.0
60.0
80.0
75.0
65.371
59.978
82.28
74.87
35.0
66.7
49.7
74.6
68.7
75.0
Dot Clock
(MHz)
25.175
31.500
31.500
36.000
40.000
50.000
49.500
65.000
75.000
78.750
108.000
108.000
108.000
135.000
121.75
156.0
30.200
57.300
100.000
15
Service Manual
Mode
VESA Standard
Power Macintosh
series