Acer AL2671W AL2671W Service Guide - Page 24

Pin Definition Between Main Board and I/O Board Item Specification 35 Audio_Center_Gnd_sig 'Center' signal of surround audio channels. nal (2) After decoding Dolby digital or other surround audio, digital receiver sends this signal to LCDTV main board for further processing. 36 Earphone_for_subpictu Audio ' Right ' channel paired with sub-picture. re_R ( 2 ) 37 Audio_Woofer_Gnd_gn Ground signal paired with audio ' Woofer ' channel. d ( 2 ) 38 Audio_Rear_L_R_Gnd Ground signal of rear left and right audio channels. _of_gnd ( 3 ) 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 'Ground' path paired with audio front "Left" and "Right" _of_Gnd 43 Teletext_Hs ( 3, from Horizontal Sync signal. LCDTV main board issues it for the use of Teletext mainboard ) decoder IC on the I/O module. 44 Teletext_Hs_Vs_return Common return path of horizontal and vertical sync signals which are ( 3 ) 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 Audio 'Left' channel paired with sub-picture. _of_L ( 3 ) 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 'Left' signal of audio rear channels. _of_L ( 3 ) LCD Item Vendor & model name LCD display area (diagonal, inch) Display technology QDI 26 (660.5mm) TFT Specification 24 Chapter 1