Function Check; Osd Function Test; Screen Picture Check; Auto Color Balance - Acer AL1917W Service Manual

Acer
Length: 1.8 m +/- 50 mm (fixed)
Connector type: D-sub male.
With DDC_2B pin assignments.
Blue connector thumb-operated jack screws
Pin Assignment:

3. FUNCTION CHECK

3.1 OSD Function Test

3.1.1 Test mode: 1440x900 @ 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: 1440x900 @ 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: 1440x900 @ 60 Hz
3.5.2 Test pattern: pattern #11 of "BLACK"
3.5.3 Adjusting both brightness and contrast value to maximum,
3.5.4 Measure power consumption as the following
Standby (No H/V
PIN
SIGNAL
No.
1 Red video input
2 Green video input
3 Blue video input
4 GND
5 Cable detect
6 Red video GND
7 Green video GND
8 Blue video GND
Status Power Consumption
Normal < 42W(with audio)
PIN No.
9 VGA +5V
10 GND
11 GND
Serial data line
12
(SDA)
13 H. Sync / H+V
14 V. Sync
15 Data clock line (SCL)
LED Display
< 1W
15
Service Manual
SIGNAL
Green
Amber