User manual LG GX500 SERVICE MANUAL

DON'T FORGET : ALWAYS READ THE USER GUIDE BEFORE BUYING !!!

If this document matches the user guide, instructions manual or user manual, feature sets, schematics you are looking for, download it now. Diplodocs provides you a fast and easy access to the user manual LG GX500. We hope that this LG GX500 user guide will be useful to you.


LG GX500 SERVICE MANUAL: Download the complete user guide (32421 Ko)

Manual abstract: user guide LG GX500SERVICE MANUAL

Detailed instructions for use are in the User's Guide.

[. . . ] Service Manual Internal Use Only Service Manual GX500 Model : GX500 Date: March, 2010 / Issue 1. 0 Table Of Contents 1. INTRODUCTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1. 1 Purpose. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1. 2 Regulatory Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1. 3 Abbreviations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] This frequency serves as comparison frequency of the phase detector and as clock frequency for all digital circuitry. The divider in the feedback path of the synthesizer is carried out as a multi-modulus divider (MMD). The loop filter is fully integrated and the loop bandwidth is about 100 kHz to allow the transfer of the phase modulation. The loop bandwidth is automatically adjusted prior to each slot (OLGA2). To overcome the statistical spread of the loop filter element values an automatic loop filter adjustment (ALFA) is performed before each synthesizer startup. The fully integrated quad-band VCO is designed for the four GSM bands (850, 900, 1800, 1900 MHz) and operates at double or four times transmit or receive frequency. To cover the wide frequency range the VCO is automatically aligned by a binary automatic band selection (BABS) before each synthesizer startup. 3. 20 DCXO The SMARTiPM contains a fully integrated 26MHz digitally controlled crystal oscillator (DCXO) with three outputs for the system clock, one output for the GSM baseband and two additional for other subsystems (GPS, Bluetooth, etc. ). The only external part of the oscillator is the crystal itself. The frequency tuning is performed along the selected subrange by programming the frequency control word (XO_TUNE) via the three wire bus (“3Wbus”) GND1 FSYS3 FSYS2 XO XOX 14 13 10 11 12 X401 4 1 3 2 26MHz DSX321SG-26M Figure 3-34 DCXO Schematic LGE Internal Use Only - 70 - Copyright © 2010 LG Electronics. Only for training and service purposes LG Electronics 70/143 LGE Property 3. TECHNICAL BRIEF GX500 Operational Description Revision A 3. 21 Front End Module control Implemented in the S-Gold3 (FL600) are two outputs which are FE1, FE2 for direct control of front end modules with two logic input pins to select RX and TX mode as well as low and high band operation. Table 3-15 FEM Control Logic MODE VDD VC1 VC2 Tx 1GHz ON OFF ON Tx 2GHz ON ON ON Rx 1GHz ON OFF OFF Rx 2GHz ON ON OFF FE1 FE2 16 12 18 10 14 15 19 LMSP43NA-782 VC2 NC 1 GND1 GND2 GND3 GND4 GND402 ANT401 L403 20p 1 SW401 ANT G3 COMMON G4 3 4 2 C418 100P FL401 17 ANT GSM1800_1900TX GSM850RX1 GSM850RX2 GSM900RX1 C405 2. 2n C436 18n 1 3 4 5 GSM900RX2 C440 1p 7 8 13 2 6 11 GSM850_900TX GSM1800RX1 GSM1900RX1 GSM1800RX2 GSM1900RX2 100NH L407 GND5 NC2 VC1 20 100P C439 100P C424 9 L404 4. 7p C428 0. 5p C433 8. 2n GSM850 GSM900 DCS1800 PCS1900 Figure 3-35 FEM schematic Copyright © 2010 LG Electronics. Only for training and service purposes - 71 - LGE Internal Use Only LG Electronics 71/143 LGE Property 3. TECHNICAL BRIEF GX500 Operational Description Revision A 3. 22 Power Amplifier Module The TQM7M5005H Power Amplifier Module(PAM) is designed in a compact from fact for quad-band cellular handsets comprising GSM850/900, DCS1800, PCS1900, supporting GMSK and linear EDGE modulation. Class12 General Packet Radio Service(GPRS) multi-slot operation is also supported. The module consists of a GSM850/900 PA block and a DCS1800/PCS1900 PA block, impedance matching circuitry for 50ohm input and output impedances, and a Multi-function Power Amplifier Control(MFC) block. A custom CMOS integrated circuit provides the internal MFC function and interface circuitry. Two separate Heterojunction Bipolar Transistor(HBT) PA blocks are fabricated onto InGaP die; one supports the GSM850/900 bands, the other supports the DCS1800 and PCS1900 bands. The InGaP die, the silicon die, nad the passive components are mounted on a multi layer laminate substrate. 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. [. . . ] Only for training and service purposes - 181 - LGE Internal Use Only 13. 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. 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. [. . . ]

DISCLAIMER TO DOWNLOAD THE USER GUIDE LG GX500




Click on "Download the user Manual" at the end of this Contract if you accept its terms, the downloading of the manual LG GX500 will begin.

 

Copyright © 2015 - manualRetreiver - All Rights Reserved.
Designated trademarks and brands are the property of their respective owners.