LG KE600 Service Manual - Page 85
Speaker trouble
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5. Trouble shooting 5.6 Speaker trouble Check Points -Speaker spring contact -Audio amp soldering -analog switch soldering 2V85_IO2 VBAT C306 C357 4.7u 0.1u 1u C304 FB309 FB310 C310 C311 22p 22p OUT301 OUT302 D309 PG05DBTFC D310 PG05DBTFC GND1 4 GND2 12 20 GND3 3 VDD1 16 VDD2 PGND 25 SCL SDA TP304 TP303 R309 100K 11 SCL 10 SDA 13 ID_ENB 2 VOC 7 I2CSPI_VDD 14 I2CSPI_SEL C369 0.1u U301 LM4946SQX 21 CBYPASS 18 LHP3D1 1 LHP3D2 C323 0.068u C320 0.01u C358 2.2u 9 LIN C313 6 LOUT 23 C361 220n MONO_IN+ 22 C362 220n MONO_IN- 15 MONO+ MONO- 17 RHP3D1 19 24 RHP3D2 0.068u C324 8 C312 220n RIN 5 ROUT SNDOUT_L SNDOUT_R C317 47p C316 47p AMP_IN_R AMP_OUT_R AMP_OUT_L AMP_IN_L FM_MAIN AMP_IN_R 2V85_IO2 U302 9 8 1A 1S 7 6 2S 2A R331 100K 5 GND VCC 10 C329 0.01u 1 1B0 2 1B1 3 2B0 4 2B1 R327 0 R330 0 FSA2267L10X SNDOUT_L FM_L SNDOUT_R FM_R 220n AMP_IN_L Checking Point FB309 Check Audio amp, In output signal U301 Check the contact spring tension and dust on the contact point Check the analog switchs U302 FB310 C313 C312 - 86 - R327 R330
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