User manual LG 24EA53VQ-P

[. . . ] 7 4. 4 LCD display trouble. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80 4. 5 Camera Trouble. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82 4. 6 Receiver & Speaker trouble. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84 4. 7 Microphone trouble. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86 4. 8 Vibrator trouble. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87 4. 9 SIM & uSD trouble. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89 4. 10 Touch trouble. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92 4. 11 LCD LED trouble. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93 4. 12 Trouble shooting of Receiver part. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94 4. 13 Trouble shooting of Transmitter part. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 4. 14 Trouble shooting of WI-FI/BT/FM part. . . . . . . . . . . . . . . . . . . . . . . . . . . . . PERFORMANCE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 2. 1 H/W Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 2. 2 Technical Specification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 3. [. . . ] The InGaP die, the silicon die, nad the passive components are mounted on a multi layer laminate substrate. The assembly is encapsulated with plastic overmold. RF input and output ports are internally matched to 50ohm to reduce the number of external components Extremely low leakage current(2. 5uA) maximizes handset standby time. Band select(BS) circuitry select GSM transmit frequency band(logic0) and DCS/PCS transmit frequency(logic1). MODE circuitry selects GMSK modulation (logic0) or EDGE modulation(logic1). VRAMP controls the output power for GMSK modulation and provides bias optimization for EDGE modulation depending on the state of MODE control. The integrated multi-function(MFC) provides envelope amplitude control in GMSK mode, reducing sensitivity to input drive, temp, power supply, and process variation. In EDGE mode, the MFC configures the PA for fixed gain, and provides the ability to optimize the PA bias operation at different power levels, This circuitry regulates PA bias conditions, reducing sensitivity to temp. , power supply, and process variation. The Enable input signal(pin8) provides a standby state to minimize battery drain. . . Table 3-16 PAM pin description LGE Internal Use Only - 72 - LG Electronics 72/143 Copyright © 2010 LG Electronics. Only for training and service purposes LGE Property 3. TECHNICAL BRIEF 24EA53VQ-P Operational Description Revision A 3. 23 PAM Schematic VBAT L404 4. 7p 12 10 13 9 14 11 8 DCS_PCS_OUT GSM850_900_OUT BY_CAP1 BY_CAP2 GND1 GND2 GND3 PGND TX_EN GSM850_900_IN DCS_PCS_IN MODE_SELECT BS 1 2 3 4 5 6 7 R407 100P HBAND_PAM_IN PA_MODE S1_PA_BAND C428 0. 5p L406 3. 9p C433 8. 2n TQM7M5005H U402 VBATT VRAMP R403 10K R404 PA_LEVEL TXON_PA LBAND_PAM_IN C410 12n C417 22n C425 0. 01U C422 0. 01U 15 OK 100P C414 1u C437 33u C434 27P C441 100P C415 100P C420 47P C429 100P OK Figure 3-36 PAM schematic Copyright © 2010 LG Electronics. Only for training and service purposes LG Electronics R323 100Kohms 78/143 LGE Property 4. TROUBLE SHOOTING 24EA53VQ-P Operational Description 24EA53VQ-P Operational Description Revision A A Revision START START 18pin IO(CN401) 18pin IO(CN401) Is soldered ?Is soldered No No Resolder the CN301 Resolder the CN301 Yes Yes Source pin Source pin of of U401 4. 8V ?U401 = = 4. 8V No No The TATA can be The can be broken broken Change other TATA Change other then retest then retest 5pin IO(CN301) 5pin IO(CN301) Figure 4-7. Connector Yes Yes Output pin Output pin of of U310 =4. 2V?No No Check solder Check solder U310 or or replace it U310 replace it Yes Yes Battery voltage is is Battery voltage over 3. 4V?Yes Yes Battery thermistor Battery thermistor value value is about 10K?Yes Yes Charge is operating properly Charge is operating properly No No No No Waiting until Waiting until battery battery Voltage goes upup to Voltage goes to 3. 4V 3. 4V U310 U310 TP1: Source pin TP1: Source pin Change the Battery Change the Battery retest retest U310 U310 TP2: Output pin TP2: Output pin Figure 4-8. USB SWITCH Copyright © 2010 LG Electronics. 79/143 - 79 LG Electronics LG Electronics 79/143 Only for training and service purposes LGE Internal LGE Property LGE Property Use Only 4. TROUBLE SHOOTING 24EA53VQ-P Operational Description Revision A 4. 4 LCD display trouble Check Points -LCD assembly status ( LCD FPCB, Connector on FPCB) -EMI filter soldering -Connector combination LCD CONNECTOR EVRC14S03Q030100R DIF_D0 DIF_D1 DIF_D2 DIF_D3 9 8 7 6 INOUT_B1 INOUT_B2 INOUT_B3 INOUT_B4 G2 G1 5 2V85_VFM CN804 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 C817 1U 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 R817 DNI LCD_PWM LCD_ID MLED MLED1 MLED2 MLED3 MLED4 MLED5 MLED6 IF_MODE1 FL803 INOUT_A1 INOUT_A2 INOUT_A3 INOUT_A4 G1 5 G2 1 2 3 4 10 G1 DIF_D4 DIF_D5 DIF_D6 DIF_D7 4 3 2 1 INOUT_A4 INOUT_A3 INOUT_A2 INOUT_A1 INOUT_B4 INOUT_B3 INOUT_B2 INOUT_B1 6 7 8 9 DIF_VSYNC TP801 IF_MODE0 VA804 EVLC14S02050 G2 10 EVRC14S03Q030100R 1 2 INOUT_A1 INOUT_A2 INOUT_A3 INOUT_A4 INOUT_B1 INOUT_B2 INOUT_B3 INOUT_B4 9 8 7 6 DIF_RESET 3 4 DIF_CD DIF_CS DIF_RD DIF_WR 10 5 FL804 FL805 EVRC14S03Q030100R Figure 4-9. [. . . ] L607 Description Part Number Spec 3. 3 uH, N , 2. 5*2. 0*1. 0 , R/TP , MLCI Power , ; , 3. 3 , 30% , ; , ; , ; , ; , ; , SHIELD , 2. 5X2X1MM , [empty] , [empty] , Inductor, Wire Wound, Chip 100 pF, 50V , J , NP0 , TC , 1005 , R/TP 10 nH, J , 1005 , R/TP , 5 pF, 50V , C , NP0 , TC , 1005 , R/TP 15 nH, G , 1005 , R/TP , chip coil 4. 7 uH, M , 1 , R/TP , , ; , , 0. 3NH , , , , , , NON SHIELD , 2. 5X2X1MM , 11MM , R/TP 1800 ohm, 1005 , Chip bead , ; , 1800ohm , ; , [empty] , R/TP 1800 ohm, 1005 , Chip bead , ; , 1800ohm , ; , [empty] , R/TP 47 nH, J , 1005 , R/TP , PBFREE 47 nH, J , 1005 , R/TP , PBFREE NTC , 10000 ohm, SMD , 1005, 3350~3399k, J, R/T, PBFREE NTC , 10000 ohm, SMD , 1005, 3350~3399k, J, R/T, PBFREE EMT6 , 150 mW, R/TP , DUAL TRANSISTORS ESM , 0. 15 W, R/TP , , ; , NPN , 5V , 60V , 50V , 150mA , 0. 1uA MAX , 10 MIN 700 MAX , 100mW , ESM , R/TP , 3P 3300 ohm, 1/16W , J , 1005 , R/TP 22 Kohm, 1/16W , F , 1005 , R/TP 330 Kohm, 1/16W , J , 1005 , R/TP 22 ohm, 1/16W , J , 1005 , R/TP 10 Kohm, 1/16W , F , 1005 , R/TP 1. 5 Kohm, 1/16W , J , 1005 , R/TP 22 ohm, 1/16W , J , 1005 , R/TP 10 Kohm, 1/16W , F , 1005 , R/TP 100 Kohm, 1/16W , F , 1005 , R/TP 100 Kohm, 1/16W , F , 1005 , R/TP 390 Kohm, 1/16W , F , 1005 , R/TP 75K ohm, 1/16W, F, 1005, R/TP 100 Kohm, 1/16W , J , 1005 , R/TP 1. 5 Kohm, 1/16W , J , 1005 , R/TP 1 ohm, 1/16W , J , 1005 , R/TP Color Remark 7 INDUCTOR, SMD, POWER ELCP0008007 7 7 7 7 7 7 7 7 7 7 L608 L609 L611 L612 L699 L701 L702 L703 L704 PT401 CAP, CHIP, MAKER INDUCTOR, CHIP CAP, CHIP, MAKER INDUCTOR, CHIP INDUCTOR, SMD, POWER FILTER, BEAD, CHIP FILTER, BEAD, CHIP INDUCTOR, CHIP INDUCTOR, CHIP THERMISTOR ECZH0000813 ELCH0004706 ECZH0000806 ELCH0012510 ELCP0008004 SFBH0008105 SFBH0008105 ELCH0001421 ELCH0001421 SETY0006301 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 PT601 Q201 Q501 R101 R102 R103 R104 R105 R106 R107 R108 R109 R110 R111 R112 R113 R114 R115 THERMISTOR TR, BJT, NPN TR, BJT, NPN RES, CHIP, MAKER RES, CHIP, MAKER RES, CHIP, MAKER RES, CHIP, MAKER RES, CHIP, MAKER RES, CHIP, MAKER RES, CHIP, MAKER RES, CHIP, MAKER RES, CHIP, MAKER RES, CHIP, MAKER RES, CHIP RES, CHIP RES, CHIP, MAKER RES, CHIP, MAKER RES, CHIP, MAKER SETY0006301 EQBN0013701 EQBN0020501 ERHZ0000465 ERHZ0000244 ERHZ0000467 ERHZ0000441 ERHZ0000203 ERHZ0000529 ERHZ0000441 ERHZ0000203 ERHZ0000204 ERHZ0000204 ERHY0000166 ERHY0000150 ERHZ0000406 ERHZ0000529 ERHZ0000434 LGE Internal Use Only - 182 - Copyright © 2010 LG Electronics. Only for training and service purposes 13. EXPLODED VIEW & REPLACEMENT PART LIST Level 7 7 7 7 7 7 Location No. R116 R117 R118 R119 R120 R201 Description RES, CHIP, MAKER RES, CHIP, MAKER RES, CHIP, MAKER RES, CHIP, MAKER RES, CHIP, MAKER PCB ASSY, MAIN, PAD SHORT PCB ASSY, MAIN, PAD SHORT RES, CHIP, MAKER RES, CHIP RES, CHIP RES, CHIP RES, CHIP, MAKER RES, CHIP, MAKER RES, CHIP, MAKER RES, CHIP, MAKER RES, CHIP RES, CHIP, MAKER RES, CHIP, MAKER RES, CHIP, MAKER RES, CHIP, MAKER RES, CHIP, MAKER RES, CHIP, MAKER RES, CHIP, MAKER PCB ASSY, MAIN, PAD SHORT RES, CHIP, MAKER RES, CHIP, MAKER RES, CHIP RES, CHIP, MAKER RES, CHIP, MAKER RES, CHIP, MAKER Part Number ERHZ0000405 ERHZ0000406 ERHZ0000404 ERHZ0000406 ERHZ0000404 SAFP0000501 Spec 10 Kohm, 1/16W , J , 1005 , R/TP 100 Kohm, 1/16W , J , 1005 , R/TP 1 Kohm, 1/16W , J , 1005 , R/TP 100 Kohm, 1/16W , J , 1005 , R/TP 1 Kohm, 1/16W , J , 1005 , R/TP Color Remark 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 R202 R203 R205 R207 R208 R209 R212 R213 R214 R216 R217 R218 R219 R220 R221 R223 R224 R225 R301 R302 R303 R305 R306 R308 SAFP0000501 ERHZ0000437 ERHY0000254 ERHY0000254 ERHY0000254 ERHZ0000405 ERHZ0000204 ERHZ0000406 ERHZ0000404 ERHY0000137 ERHZ0000204 ERHZ0000443 ERHZ0000443 ERHZ0000405 ERHZ0000301 ERHZ0000405 ERHZ0000405 SAFP0000501 ERHZ0000463 ERHZ0000463 ERHY0000254 ERHZ0000404 ERHZ0000405 ERHZ0000404 33 ohm, 1/16W , J , 1005 , R/TP 33 ohm, 1/16W , J , 1005 , R/TP 4. 7K ohm, 1/16W, J, 1005, R/TP 1 Kohm, 1/16W , J , 1005 , R/TP 10 Kohm, 1/16W , J , 1005 , R/TP 1 Kohm, 1/16W , J , 1005 , R/TP 2 Kohm, 1/16W , J , 1005 , R/TP 4. 7K ohm, 1/16W, J, 1005, R/TP 4. 7K ohm, 1/16W, J, 1005, R/TP 4. 7K ohm, 1/16W, J, 1005, R/TP 10 Kohm, 1/16W , J , 1005 , R/TP 100 Kohm, 1/16W , F , 1005 , R/TP 100 Kohm, 1/16W , J , 1005 , R/TP 1 Kohm, 1/16W , J , 1005 , R/TP 27K ohm, 1/16W, F, 1005, R/TP 100 Kohm, 1/16W , F , 1005 , R/TP 2200 ohm, 1/16W , J , 1005 , R/TP 2200 ohm, 1/16W , J , 1005 , R/TP 10 Kohm, 1/16W , J , 1005 , R/TP 560 Kohm, 1/16W , F , 1005 , R/TP 10 Kohm, 1/16W , J , 1005 , R/TP 10 Kohm, 1/16W , J , 1005 , R/TP Copyright © 2010 LG Electronics. 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