Acer Service Manual
15
3.2 Screen Picture Check
3.2.1 Test mode: 1680x1050 @ 60 Hz
3.2.2 Test pattern: pattern #1 of crosshatch (GENERAL-1)
3.2.3 Select OSD menu to execute ‘Auto’ function, screen picture shouldn’t appear abnormal
phenomenon and picture on screen should fit in with active display screen.
3.3 Auto Color Balance
3.3.1 Test mode: 640x480 @ 60 Hz
3.3.2 Test pattern: pattern #42 of 5-MOSAIC
3.3.3 Enter "Factory Mode" pressing "Auto color" key, and execute "AUTO".
3.4 Timing Check
3.4.1 Test mode: Refer to preset timing table and power saving mode
3.4.2 Test pattern: pattern #1 of crosshatch (GENERAL-1)
3.4.3 After change above timing and execute “Auto” function automatically, picture should fit in with
active display screen.
3.4.4 Under power saving mode, LED lamp on the key board should be orange
3.5 Power Consumption Function Test
3.5.1 Test mode: 1680x1050 @ 60 Hz
3.5.2 Test pattern: pattern #41 of “WHITE”
3.5.3 Adjusting both brightness value to maximum,
3.5.4 Measure power consumption as the following
Status Power Consumption LED Display
Normal < 45W(with audio) Green
Standby (No H/V
sync)
< 2W Orange
Power off < 1W No display
3.6 VGA Cable Detect Test
If VGA cable of LCD monitor isn’t connected to video pattern generator or PC, “NO SIGNAL” should be
shown on screen.
3.7 Hi-Pot test
Test condition:
a. high voltage 2.3KV(DC)
b. leakage current 10mA
c. rising time 1 sec.
d. test time 3 sec.
3.8 Grounding Test
Test condition:
a. test current 30A / 2 sec
b. impedance < 0.1Ω
3.9 Bumping Test
3.9.1 Test mode: 1680x1050 @ 60 Hz;
3.9.2 Test pattern: pattern #1 of crosshatch (GENERAL-1)
3.9.3 To shock LCD monitor lightly at the center of rear cover and edges with 1~2kg/cm2 force for three
times, no abnormal phenomenon is found on panel screen.
4. DISPLAY CHECK
4.1 Panel Flicker Check
Connect LCD monitor to PC, set LCD monitor to be timing of 1680x1050@60 Hz, adjust brightness to
be default value (brightness at maximum), execute “Auto” function, and then check picture of shut down
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