Acer AL2671W - Page 24

24 Chapter 1
35 Audio_Center_Gnd_sig
nal (2)
'Center' signal of surround audio channels.
After decoding Dolby digital or other surround audio, digital receiver sends
this signal to LCDTV main board for further processing.
36 Earphone_for_subpictu
re_R ( 2 )
Audio ' Right ' channel paired with sub-picture.
37 Audio_Woofer_Gnd_gn
d ( 2 )
Ground signal paired with audio ' Woofer ' channel.
38 Audio_Rear_L_R_Gnd
_of_gnd ( 3 )
Ground signal of rear left and right audio channels.
After decoding Dolby digital or other surround audio, digital receiver sends
this signal to LCDTV main board for further processing.
39 YUV_1_Pr_Return ( 6 ) Return path of ' Pr ' signal. It belongs to YUV signal set -1.
40 YUV_1_Pb_Return ( 6 ) Return path of ' Pb ' signal. It belongs to YUV signal set -1.
41 YUV_1_Y_Return ( 6 ) Return path of ' Y ' signal. It belongs to YUV signal set -1.
42 Audio_Front_L_R_Gnd
_of_Gnd
'Ground' path paired with audio front "Left" and "Right"
43 Teletext_Hs ( 3, from
mainboard )
Horizontal Sync signal. LCDTV main board issues it for the use of Teletext
decoder IC on the I/O module.
44 Teletext_Hs_Vs_return
( 3 )
Common return path of horizontal and vertical sync signals which are
issued by LCDTV main board
45 TV_Out Video output for signal set AV3_OUT
46 TV_R Audio 'Right' channel of signal set AV3_OUT
47 TV_L Audio 'Left' channel of signal set AV3_OUT
48 Audio_Mute Disable all the analog audio signals from I/O modules
49 12V_max_1A_a ( 2 ) Power pins which supply +12V to digital receiver.
50 12V_max_1A_b ( 2 ) Power pins which supply +12V to digital receiver.
51 5V_max_1.5A_a ( 2 ) Power pins which supply +5V to digital receiver.
52 5V_max_1.5A_b ( 2 ) Power pins which supply +5V to digital receiver.
53 USDA SDA signal issued by LCDTV main board to access ICs and
modules of analog option
54 USCL SCL signal issued by LCDTV main board to access ICs and
modules of analog option
55 ID_1 Identification signal -1
56 ID_2 Identification signal -2
57 GND_3_of_(3) Power ground
58 Audio_Rear_L_R_Gnd
_of_L ( 3 )
Audio 'Left‘ channel paired with sub-picture.
59 YUV_2_Pr ( 3 ) 'Pr' signal of YUV-2 signal set.
60 YUV_2_Pb ( 3 ) 'Pb' signal of YUV-2 signal set.
61 YUV_2_Y ( 3 ) 'Y ' signal of YUV-2 signal set.
62 Audio_Front_L_R_Gnd
_of_L ( 3 )
'Left' signal of audio rear channels.
LCD
Item Specification
Vendor & model name QDI
LCD display area (diagonal, inch) 26 (660.5mm)
Display technology TFT
Pin Definition Between Main Board and I/O Board
Item Specification