Sharp LC-20AV7U Service Manual - Page 28

A7144BLS 8-1 NOTE: CBA AND PWB MEANS PRINTED WIRING BOARD. IC1202 (TV MICRO CONTROLLER) KEY-IN-2 4 KEY-IN-1 3 REMOTE 27 RESET 94 XIN 37 XOUT 38 Q917 RESET AL+3.3V(D) X1301 27MHz VCOM 19 DTV-ON-H 152 BACKLIGHT-SW 157 P-ON-H 28 VGH-H 26 BACKLIGHT-ADJ 20 IF-MUTE 18 INPUT-2 51 INPUT-0 49 INPUT-1 50 S-SW 47 SCL 30 SDA 31 AFT-IN 5 VOLUME 23 AUDIO-MUTE 48 FSC 44 BUS-OPEN 29 DTV-S-SREQ 17 DTV-S-SCLK 155 DTV-S-SIN 16 DTV-S-SOUT 15 DTV-S-RESET 153 IC101 (DTV SIGNAL PROCESS) DTV-S-RESET 204 DTV-S-SOUT 153 DTV-S-SIN 154 DTV-S-SCLK 155 DTV-S-SREQ 38 DTV MODULE CBA UNIT CN101 CN61 12 DTV-S-RESET 12 10 DTV-S-SOUT 10 9 DTV-S-SIN 9 8 DTV-S-SCLK 8 7 DTV-S-SREQ 7 IC1205 (MEMORY) 7 WP 5 SDA 6 SCL IC61 (MEMORY) 5 SDA 6 SCL MAIN CBA CN1301 1 KEY-IN-2 2 KEY-IN-1 CL1107 1 2 FUNCTION CBA KEY SWITCH KEY SWITCH CN1302 3 REMOTE 4 P-ON-H CL1104 3 4 RV1142 REMOTE SENSOR Q1142 LED DRIVE D1142 POWER AL+3.3V(D) IR SENSOR CBA VCOM DTV-ON-H BACKLIGHT-SW P-ON-H VGH-H BACKLIGHT-ADJ TO LCD BLOCK DIAGRAM TO POWER SUPPLY BLOCK DIAGRAM TO LCD BACKLIGHT BLOCK DIAGRAM IF-MUTE INPUT-2 INPUT-0 INPUT-1 S-SW AFT-IN FSC TO IF/VIDEO BLOCK DIAGRAM SCL SDA SCL SDA VOLUME AUDIO-MUTE TO DTV MODULE BLOCK DIAGRAM TO AUDIO BLOCK DIAGRAM BLOCK DIAGRAMS System Control Block Diagram