Acer Service Manual
Digital-Only Connector Pin Assignments
Pin Signal Assignment Pin Signal Assignment Pin Signal Assignment
1 T.M.D.S. Data2- 9 T.M.D.S. Data1- 17 T.M.D.S. Data0-
2 T.M.D.S. Data2+ 10 T.M.D.S. Data1+ 18 T.M.D.S. Data0+
3
T.M.D.S. Data2/4
Shield
11
T.M.D.S. Data1/3
Shield
19
T.M.D.S. Data0/5
Shield
4 No Connect 12 No Connect 20 No Connect
5 No Connect 13 No Connect 21 No Connect
6 DDC Clock 14 +5V Power 22
T.M.D.S. Clock
Shield
7 DDC Data 15 Ground (for +5V) 23 T.M.D.S. Clock+
8 No Connect 16 Hot Plug Detect 24 T.M.D.S. Clock-
3. FUNCTION CHECK
3.1 OSD Function Test
3.1.1 Test mode: 1680x1050 @ 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: 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: 800x600 @ 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: 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 ≤ 55W Green
Standby (No H/V
sync)
< 1W Orange
Power off < 1W No display
15