LG KG270 Service Manual - Page 35
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3. TECHNICAL BRIEF VINNORP VINNORN MAIN_MIC VMIC R300 1K R301 2.2K C303 39p C304 10u C307 0.1u R304 C306 100ohm 0.1u R307 100ohm C309 0.1u R309 2.2K 39p 39p C308 39p OB4-15L42-C33L 2 1 MIC300 C314 C313 Figure 3-10-4 Main Microphone interface VMIC R316 1.5K AUXIN C317 0.1u C318 NA AUXIP C320 0.1u R318 2.2K C319 10u 2V8_VIO 2V8_VIO C321 39p R322 NA R323 100K AUXOP_FML AUXOP_FMR TXD RXD C323 10u C324 10u C325 39p C326 39p HS_DET RPWRON DSR 100K R321 2V8_VIO EAR_MIC I/O CONNECTOR VBAT CN301 VCHARGE 21 FOR RADIO 19 1 FB300 1800 2 3 FB301 1800 4 FB302 1800 5 6 7 8 2V8_VIO 9 10 11 R324 12 100K 13 14 15 C327 C328 16 10u 56p 17 (2012) 18 (10V,Z,Y5V) (50V,J,NP0) 20 22 L300 270nH 1608 C322 10p FOR RADIO 2 : AUDIO 4 : EAR_L 5 : EAR_R 6 : TXD 7 : RXD 8 : JACK_D 9,10 : BATT 11 : R/ON 12,13 : CHG FM_ANT VBAT HSEJ-18S04-25R BATT_TEMP R332 0 C336 C337 3p 18p 3 2 1 CN302 (50V,C,NP0) (TOL:0.25P) (50V,J,NP0) Figure 3-10-5 Headset interface - 36 -
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