Service Manual
Page 4
... Trouble Shooting 85 4.13 Ear-Mic Jack Detection Trouble Shooting 87 4.14 Ear-Mic Hook Detection Trouble Shooting 88 4.15 Ear-Mic Headset MIC Trouble Shooting 89 4.16 Ear-Mic Headset HSOR/HSOL Trouble Shooting 90 4.17 FM-Radio Trouble Shooting 91 4.18 Transflash Trouble Shooting 93 4.19 Main Key Backlight LED...
... Trouble Shooting 85 4.13 Ear-Mic Jack Detection Trouble Shooting 87 4.14 Ear-Mic Hook Detection Trouble Shooting 88 4.15 Ear-Mic Headset MIC Trouble Shooting 89 4.16 Ear-Mic Headset HSOR/HSOL Trouble Shooting 90 4.17 FM-Radio Trouble Shooting 91 4.18 Transflash Trouble Shooting 93 4.19 Main Key Backlight LED...
Service Manual
Page 11
... Decoded 64Poly Music Player MP3/ AAC/AAC+ Camcorder MPEG4, H.263, H.264 Voice Recording Yes Speaker Phone mode Yes Support Travel Adapter Yes CDROM Yes Stereo Headset Yes Data Cable Yes T-Flash (External Memory) Yes Comment Function Key: 4 Key Navigation, F1, F2, F3, F4, SND, CLR, End 7 Wheel key : Wheel 4, Wheel rotate... & Fax support Vibrator Built in Vibrator Bluetooth V2.0, HSP, HFP, OPP, FTP(server), BPP, A2DP, AVRCP MIDI(for training and service purposes Copyright © 2008 LG Electronics. Inc. 2.
... Decoded 64Poly Music Player MP3/ AAC/AAC+ Camcorder MPEG4, H.263, H.264 Voice Recording Yes Speaker Phone mode Yes Support Travel Adapter Yes CDROM Yes Stereo Headset Yes Data Cable Yes T-Flash (External Memory) Yes Comment Function Key: 4 Key Navigation, F1, F2, F3, F4, SND, CLR, End 7 Wheel key : Wheel 4, Wheel rotate... & Fax support Vibrator Built in Vibrator Bluetooth V2.0, HSP, HFP, OPP, FTP(server), BPP, A2DP, AVRCP MIDI(for training and service purposes Copyright © 2008 LG Electronics. Inc. 2.
Service Manual
Page 27
...right reserved. Only for telechips O telechips BP enable I End Of Charge O charger enable O telechips IO enable O Wheel chip reset O Headset path select I/O Wheel Touch key control I FM radio Interrupt O Hook detect enable O Sub LCD Reset O speaker enable O DA& power... P10 JACK_DETECT D17 MM_LDO_EN V18 HOOK_DETECT E18 HALL_PDN C18 LEDI2C_SCL Y8 LCD_BL_ENM G12 TOUCH_INT P13 TFLASH_DETECT AA13 C- HG_EN. Copyright © 2008 LG Electronics. R10 SLIDE D19 LEDI2C_SDA B18 LCD_BL_ENS V21 FM_RESET I/O Comment O telechips reset O Main/Sub LCD select, sub lcd cs pin...
...right reserved. Only for telechips O telechips BP enable I End Of Charge O charger enable O telechips IO enable O Wheel chip reset O Headset path select I/O Wheel Touch key control I FM radio Interrupt O Hook detect enable O Sub LCD Reset O speaker enable O DA& power... P10 JACK_DETECT D17 MM_LDO_EN V18 HOOK_DETECT E18 HALL_PDN C18 LEDI2C_SCL Y8 LCD_BL_ENM G12 TOUCH_INT P13 TFLASH_DETECT AA13 C- HG_EN. Copyright © 2008 LG Electronics. R10 SLIDE D19 LEDI2C_SDA B18 LCD_BL_ENS V21 FM_RESET I/O Comment O telechips reset O Main/Sub LCD select, sub lcd cs pin...
Service Manual
Page 36
... LG Electronics. HW Circuit Description 3.5.8 System Connector Pin No NET Name 1 FM_ANT 2 HSMICIP 3 JACK_TYPE 4 HSOUTL 5 HSOUTR 6 PORT1 7 PORT2 8 JACK_DETECT 9 VBAT 10 11 PWON 12 VCHG_IN 13 14 UART3_DSR 15 VBUS_IN 16 UART2_TX 17 UART2_RX 18 GND I/ O Comme nt I FM signal antenna I Headset... Mic signal I Jack type deteect I Headset receiver Left I Headset receiver Right I Multiport : UART, USB 2.0 , Remmoc on Interrupt I Multiport : UART, USB 2.0, Remmocon ADC valu ...
... LG Electronics. HW Circuit Description 3.5.8 System Connector Pin No NET Name 1 FM_ANT 2 HSMICIP 3 JACK_TYPE 4 HSOUTL 5 HSOUTR 6 PORT1 7 PORT2 8 JACK_DETECT 9 VBAT 10 11 PWON 12 VCHG_IN 13 14 UART3_DSR 15 VBUS_IN 16 UART2_TX 17 UART2_RX 18 GND I/ O Comme nt I FM signal antenna I Headset... Mic signal I Jack type deteect I Headset receiver Left I Headset receiver Right I Multiport : UART, USB 2.0 , Remmoc on Interrupt I Multiport : UART, USB 2.0, Remmocon ADC valu ...
Service Manual
Page 86
All right reserved. Inc. Only for training and service purposes - 87 - Check the Ear-Jack Detection. NO Re-solder FB303, VA301 YES Check the soldering status Of CN300. Is it O.K? NO Re-solder Pin #8 of phone. Connect the Ear-Mic Headset to the Ear-Mic Socket of CN300 YES The main_PCB has a Problem, Change the main_PCB. CN300 Copyright © 2008 LG Electronics. Is the status of phone. 4. Trouble Shooting 4.13 Ear-Mic Jack Detection Trouble Shooting START Disassemble the rear case of VA301 low? LGE Internal Use Only
All right reserved. Inc. Only for training and service purposes - 87 - Check the Ear-Jack Detection. NO Re-solder FB303, VA301 YES Check the soldering status Of CN300. Is it O.K? NO Re-solder Pin #8 of phone. Connect the Ear-Mic Headset to the Ear-Mic Socket of CN300 YES The main_PCB has a Problem, Change the main_PCB. CN300 Copyright © 2008 LG Electronics. Is the status of phone. 4. Trouble Shooting 4.13 Ear-Mic Jack Detection Trouble Shooting START Disassemble the rear case of VA301 low? LGE Internal Use Only
Service Manual
Page 87
NO Ear-Mic Headset has a problem. Is the status of phone. Inc. Trouble Shooting 4.14 Ear-Mic Hook Detection Trouble Shooting START Disassemble the rear case of FB300 LOW? Press the HOOK Button. YES Check the soldering status Of C307,C308,L303,U302 YES U103(DBB) is broken. Change the board. Connect the Ear-Mic Headset to the Ear-Mic Socket of phone. Exchange the Ear-Mic Headset NO Re-solder C307,C308,L303,U302 LGE Internal Use Only - 88 - Copyright © 2008 LG Electronics. Only for training and service purposes All right reserved. 4.
NO Ear-Mic Headset has a problem. Is the status of phone. Inc. Trouble Shooting 4.14 Ear-Mic Hook Detection Trouble Shooting START Disassemble the rear case of FB300 LOW? Press the HOOK Button. YES Check the soldering status Of C307,C308,L303,U302 YES U103(DBB) is broken. Change the board. Connect the Ear-Mic Headset to the Ear-Mic Socket of phone. Exchange the Ear-Mic Headset NO Re-solder C307,C308,L303,U302 LGE Internal Use Only - 88 - Copyright © 2008 LG Electronics. Only for training and service purposes All right reserved. 4.
Service Manual
Page 88
Connect the Ear-Mic Headset to the Ear-Mic Socket of R300,R301. Is it O.K? All right reserved. LGE Internal Use Only NO Check Soldering of phone. Re-solder C307,... for training and service purposes - 89 - YES NO Check the soldering Pin #2 of CN300 Copyright © 2008 LG Electronics. 4. Resolder Pin #2 of CN300 YES U102(ABB) is broken. Trouble Shooting 4.15 Ear-Mic Headset MIC Trouble Shooting START Disassemble the rear case of C307,C308,L303,FB300,VA300, L100,C119 Is it...
Connect the Ear-Mic Headset to the Ear-Mic Socket of R300,R301. Is it O.K? All right reserved. LGE Internal Use Only NO Check Soldering of phone. Re-solder C307,... for training and service purposes - 89 - YES NO Check the soldering Pin #2 of CN300 Copyright © 2008 LG Electronics. 4. Resolder Pin #2 of CN300 YES U102(ABB) is broken. Trouble Shooting 4.15 Ear-Mic Headset MIC Trouble Shooting START Disassemble the rear case of C307,C308,L303,FB300,VA300, L100,C119 Is it...
Service Manual
Page 89
YES Disassemble the rear case of the Headset. 16 0hm ± 15%? Copyright © 2008 LG Electronics. Ear-Mic Headset has a problem. NO Re-solder FB301, FB302, U604, L101, L102, C120, C121, C125, C126, L300, L301, C302-C305 LGE Internal Use Only - 90 -...YES The main_PCB has a Problem, Change the main_PCB. All right reserved. 4. Connect the Ear-Mic Headset to the Ear-Mic Socket. Inc. Only for training and service purposes Trouble Shooting 4.16 Ear-Mic Headset HSOR/HSOL Trouble Shooting START NO Check the resistance between HSOUTR/L & GND of phone. Exchange the Ear...
YES Disassemble the rear case of the Headset. 16 0hm ± 15%? Copyright © 2008 LG Electronics. Ear-Mic Headset has a problem. NO Re-solder FB301, FB302, U604, L101, L102, C120, C121, C125, C126, L300, L301, C302-C305 LGE Internal Use Only - 90 -...YES The main_PCB has a Problem, Change the main_PCB. All right reserved. 4. Connect the Ear-Mic Headset to the Ear-Mic Socket. Inc. Only for training and service purposes Trouble Shooting 4.16 Ear-Mic Headset HSOR/HSOL Trouble Shooting START NO Check the resistance between HSOUTR/L & GND of phone. Exchange the Ear...
Service Manual
Page 90
... trouble shooting NO Re-solder R302,R304,R308,U301 Copyright © 2008 LG Electronics. Only for training and service purposes - 91 - Inc. Trouble Shooting z Ear-Mic Headset Operation scheme is broken. All right reserved. Change the board. YES U103(DBB) is shown below. HSMICIP C307 0.1u C308 120p VRIO R302 ...GND 3 VINVIN+ 2 LMV7291MGX-NOPB R308 10K VRIO VRIO HOOK_EN U301 1 6 2S B1 5 3 VCC GND 4 A B0 FSA4157L6X R304 1K LAST CALL START Check the Ear_Mic Headset trouble YES Check Soldering of R302,R304,R308,U301 Is it O.K? LGE Internal Use Only 4.
... trouble shooting NO Re-solder R302,R304,R308,U301 Copyright © 2008 LG Electronics. Only for training and service purposes - 91 - Inc. Trouble Shooting z Ear-Mic Headset Operation scheme is broken. All right reserved. Change the board. YES U103(DBB) is shown below. HSMICIP C307 0.1u C308 120p VRIO R302 ...GND 3 VINVIN+ 2 LMV7291MGX-NOPB R308 10K VRIO VRIO HOOK_EN U301 1 6 2S B1 5 3 VCC GND 4 A B0 FSA4157L6X R304 1K LAST CALL START Check the Ear_Mic Headset trouble YES Check Soldering of R302,R304,R308,U301 Is it O.K? LGE Internal Use Only 4.
Service Manual
Page 110
... E4 SDRAM_SBANK0 SDRAM_NSRAS H3 J3 SDRAM_NSCAS SDRAM_NSWE E3 F3 SDRAM_NSDQMU SDRAM_NSDQML N4 L3 SDRAM_SDCLKX SDRAM_DQSH J4 SDRAM_DQSL E SD_CS K4 SDRAM_CS GPIO 3(INT_OUT) UART3 : B/T Headset B/T, AT Command U103 PD761811BZVL GPIO 48 MMC1_CLK MMC1_DAT0 MMC1_DAT1 GPIO 36 --> Useless using VRMMC MMC1_DAT2 MMC1_DAT3 MMC1_CMD GPIO_33 Useless GPIO33 becauseof sleep crt MMC1_PBIAS VDDS1_2...VRIO 1.8 200 VREXTH 1.8 / 2.8 [email protected] [email protected] VREXTL 1.3/1.05 1.8 / 2.8 [email protected] [email protected]~2.8V C157 10u 0.1u C158 0.1u C159 2.2u C156 7 8 9 Copyright © 2008 LG Electronics. 7.
... E4 SDRAM_SBANK0 SDRAM_NSRAS H3 J3 SDRAM_NSCAS SDRAM_NSWE E3 F3 SDRAM_NSDQMU SDRAM_NSDQML N4 L3 SDRAM_SDCLKX SDRAM_DQSH J4 SDRAM_DQSL E SD_CS K4 SDRAM_CS GPIO 3(INT_OUT) UART3 : B/T Headset B/T, AT Command U103 PD761811BZVL GPIO 48 MMC1_CLK MMC1_DAT0 MMC1_DAT1 GPIO 36 --> Useless using VRMMC MMC1_DAT2 MMC1_DAT3 MMC1_CMD GPIO_33 Useless GPIO33 becauseof sleep crt MMC1_PBIAS VDDS1_2...VRIO 1.8 200 VREXTH 1.8 / 2.8 [email protected] [email protected] VREXTL 1.3/1.05 1.8 / 2.8 [email protected] [email protected]~2.8V C157 10u 0.1u C158 0.1u C159 2.2u C156 7 8 9 Copyright © 2008 LG Electronics. 7.
Service Manual
Page 115
7. Copyright © 2008 LG Electronics. All right reserved. Inc. CIRCUIT DIAGRAM 1 2 3 4 5 6 7 8 9 10 A Stereo DAC & AMP VBAT DAC_2V8 VRIO C601 0.1u C600 10u C602 2.2u 1u C603 B U602 A6 A5 ... 1B0 1A 8 MIC_P MM_MICP 1 1B1 7 S1 B ABB_MICN 2 2B0 2A 5 MIC_N MM_MICN 3 2B1 4 GND S2 6 9 VCC CAM_RECORD_SEL From TC C608 0.1u R601 100K SPEAKER & RECEIVER 18P HEADSET SWITCH ( MM HS | ABB HS ) VBAT RCV_P R602 R604 RCV_N C620 27p 10 L600 100nH C624 100p SPK_AMPP 10 L601 100nH C625 27p SPK_AMPN U603...
7. Copyright © 2008 LG Electronics. All right reserved. Inc. CIRCUIT DIAGRAM 1 2 3 4 5 6 7 8 9 10 A Stereo DAC & AMP VBAT DAC_2V8 VRIO C601 0.1u C600 10u C602 2.2u 1u C603 B U602 A6 A5 ... 1B0 1A 8 MIC_P MM_MICP 1 1B1 7 S1 B ABB_MICN 2 2B0 2A 5 MIC_N MM_MICN 3 2B1 4 GND S2 6 9 VCC CAM_RECORD_SEL From TC C608 0.1u R601 100K SPEAKER & RECEIVER 18P HEADSET SWITCH ( MM HS | ABB HS ) VBAT RCV_P R602 R604 RCV_N C620 27p 10 L600 100nH C624 100p SPK_AMPP 10 L601 100nH C625 27p SPK_AMPN U603...