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
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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
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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
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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
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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
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