Acer AL2623W Instrukcja serwisowa - Strona 16
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Acer
3.
FUNCTION CHECK
3.1 OSD Function Test
3.1.1 Test mode: 1920x1200 @ 60 Hz
3.1.2 Test pattern: pattern #1 of crosshatch (GENERAL-1)
3.1.3 Check single key function and hot key function about key "Power", "Menu"," ►", "◄ ",
"Exit/Auto", it should operate normally
3.2 Screen Picture Check
3.2.1 Test mode: 1920x1200 @ 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: 1920x1200 @ 60 Hz
3.3.2 Test pattern: pattern #48 of 32 gray levels (32 GRAYS)
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: 1920x1200 @ 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
Standby (No H/V
Power off
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
b. leakage current
c. rising time
d. test time
3.8 Grounding Test
Test condition:
b. impedance
Status
Power Consumption
Normal
sync)
2.3KV(DC)
10mA
1 sec.
3 sec.
a. test current
30A / 2 sec
< 0.1Ω
LED Display
≤ 130W
< 2W
< 1W
15
Service Manual
Green
Orange
No display