LG KG280 Service Manual - Page 64
Speaker Trouble
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4.9 Speaker Trouble TEST POINT U204 4. TROUBLE SHOOTING CIRCUIT 1V8_VCAM 2V8_VCAM C202 0.1u C203 4.7u C204 4.7u _MIDI_RST 26M_MIDI C235 1000p R202 6.8K C210 2200p C211 100p _MIDI_CS MADD01 MADD02 C212 M_WR M_RD 1000p A_DATA08 A_DATA09 A_DATA10 A_DATA11 A_DATA12 A_DATA13 A_DATA14 A_DATA15 _MIDI_IRQ _MIDI_IRQ ACOUSTIC & MIDI 64 POLY MIDI IC(MP3 Ringtone) FB200 VBAT VBAT SPK_N E8 IOVDD1 H3 IOVDD2 D7 DVDD1 DVDD2 E1 J3 DVDD3 C1 AVDD C8 SPVDD B2 VREF ECCH0000182 10V Over 10V Over ECTH0004807 ECCH0004904 10V Under C205 0.1u D3 _RST E2 CLKI D2 PLLC H4 _CS__SS F1 A0 E3 A1 J5 _WR_SCK G4 _RD_SI G3 D0 J2 D1 H2 D2 G2 D3 H1 D4 J1 D4_H1 F3 D5 G1 D6 F2 D7 J6 SO H5 SMODE G5 IFSEL G7 MTR J8 MTR_G7 U204 YMU792P EUSY0306401 H8 LED0 H7 LED1 J7 LED2 E7 _IRQ H6 GPIO C200 4.7u C201 1u C206 0.1u C208 0.1u C2 TXOUT C234 27p SPK_SEL REC_P A2 EXC C6 EXTOUT B5 BBL REC_N R203 100K B6 HPOUTL MIDI_HP FM_AUDIO BBR C5 HPOUTR A6 MIDI_HPR HPC B3 B4 EQ1 A3 EQ2 A4 EQ3 A7 SPOUT2 R207 24K C217 R224 20K 0.01u R209 82K C218 390p C233 0.1u SPK_P R230 NA R231 NA C209 10u SPKP_P SPK_N U200 1 VCC NO2 10 2 9 NO1 COM2 3 COM1 IN2 8 4 IN1 7 NC2 5 NC1 GND 6 NLAS5223BMNR2G C213 1u C236 27p L H ADD01 ADD02 A_WR A_RD R226 R227 R228 R229 100ohm 100ohm 0 0 VA200 EVL5M02200 SPK_SEL RECEIVER SPEAKER C237 C238 SPK_RCV_P SPK_RCV_N VA201 EVL5M02200 MADD01 MADD02 M_WR M_RD C239 C240 G8 BCLK F7 LRCK F8 SDIN E6 MCLK D6 TESTI0 F6 TESTI1 G6 TESTI2 C7 TESTI3 SPOUT1 B7 A8 SPOUT1_B7 C3 RXIN RXIN_C3 A1 C4 EXTIN D4 INDEX C219 0.068u R225 NA C221 C222 SPK_P FM_AUDIO_R REC_P 7.5p 7.5p 7.5p 7.5p 47p 47p D1 DVSS1 D8 DVSS2 J4 DVSS3 B1 AVSS A5 HPVSS B8 SPVSS Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 65 - LGE Internal Use Only
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