LG F7100 Service Manual Download Page 61

Page: 61 / 126

4. TROUBLE SHOOTING

- 62 -

Set the audio volume max.

START

Yes

ABB is out of order.

Change the board.

SPK_SEL signal is

low?

Resolder the U203

and R217.

Otherwise change it.

Replace t he

receiver

Set audio part at test equipment
as PRBS or continuous w ave, not echo.

Does sine wave

appear

at R215, R216 ?

Check the contact

State of receiver. Is it

OK?

No Trouble

Check the soldering state of

U203 and R217. Is it OK?

DBB is out of

order.

Change the board.

Summary of Contents for F7100

Page 1: ...Service Manual Model F7100 Service Manual F7100 P N MMBD0035501 Date July 2004 Issue 1 0 ...

Page 2: ...LE SHOOTING 38 4 1 RF Components 38 4 2 RX Trouble 39 4 2 1 Checking Regulator Circuit 40 4 2 2 Checking VCTCXO Circuit 41 4 2 3 Checking Transceiver Control Signal 42 4 2 4 Checking Antenna Switch Mobile Switch 43 4 2 5 Checking SAW Filter 44 4 2 6 Checking RX IQ 45 4 3 TX Trouble 46 4 3 1 Checking Regulator Circuit 47 4 3 2 Checking VCTCXO Circuit 48 4 3 3 Checking PLL Control Signal 49 4 3 4 Ch...

Page 3: ...2 LED 102 10 3 3 Backlight 102 10 3 4 Buzzer 102 10 3 5 Vibrator 102 10 3 6 LCD 103 10 3 7 Keypad 103 10 3 8 MicSpkTest 103 10 3 9 Compass 103 11 STAND ALONE TEST 104 11 1 Introduction 104 A Tx Test 104 B Rx Test 104 11 2 Setting Method 104 A COM port 104 B Tx 104 C Rx 104 11 3 Means of Test 105 12 AUTO CALIBRATION 107 12 1 Overview 107 12 2 Requirements 107 12 3 Menu and settings 107 12 4 AGC 109...

Page 4: ...e equipment provided to customer is faulty and possibly causing harm or interruption in service to the telephone network it should disconnect telephone service until repair can be done A telephone company may temporarily disconnect service as long as repair is not done C Changes in Service A local telephone company may make changes in its communications facilities or procedure If these changes cou...

Page 5: ...d Use a suitable grounded soldering iron Keep sensitive parts in these protective packages until these are used When returning system boards or parts like EEPROM to the factory use the protective package as described 1 3 Abbreviations For the purposes of this manual following abbreviations apply APC Automatic Power Control BB Baseband BER Bit Error Ratio CC CV Constant Current Constant Voltage DAC...

Page 6: ...n Square RTC Real Time Clock SAW Surface Acoustic Wave SIM Subscriber Identity Module SLR Sending Loudness Rating SRAM Static Random Access Memory PSRAM Paeudo SRAM STMR Side Tone Masking Rating TA Travel Adapter TDD Time Division Duplex TDMA Time Division Multiple Access UART Universal Asynchronous Receiver Transmitter VCO Voltage Controlled Oscillator VCTCXO Voltage Control Temperature Compensat...

Page 7: ...21 2 X 45 5 X 21mm close 97 X 45 5 X 21mm Weight 91g Charging Time 3Hours Display 128X160 pixel 65K STN LCD ANT Internal Ear Phone Jack Yes PC synchronization Yes Speech Coding EFR FR HR Data and Fax Yes Vibrator Yes Loud Speaker Yes Voice Recording Yes C mike Yes Receiver Yes Travel Adaptor Yes Option Data Kit ...

Page 8: ... Error 0 1 ppm GSM EGSM Level Power Toler Level Power Toler 5 33 dBm 2dB 13 17 dBm 3dB 6 31 dBm 3dB 14 15 dBm 3dB 7 29 dBm 3dB 15 13 dBm 3dB 8 27 dBm 3dB 16 11 dBm 5dB 9 25 dBm 3dB 17 9 dBm 5dB 10 23 dBm 3dB 18 7 dBm 5dB 11 21 dBm 3dB 19 5 dBm 5dB 4 Power Level 12 19 dBm 3dB DCS Level Power Toler Level Power Toler 0 30 dBm 2dB 8 14 dBm 3dB 1 28 dBm 3dB 9 12 dBm 4dB 2 26 dBm 3dB 10 10 dBm 4dB 3 24 ...

Page 9: ...m 6 000 71 due to modulation DCS Offset from Carrier kHz Max dBc 100 0 5 200 30 250 33 400 60 600 1 200 60 1 200 1 800 60 1 800 3 000 65 3 000 6 000 65 6 000 73 GSM EGSM Offset from Carrier kHz Max dBm 400 19 600 21 1 200 21 6 Output RF Spectrum 1 800 24 due to switching transient GSM Offset from Carrier kHz Max dBm 400 22 600 24 1 200 24 1 800 27 7 Spurious Emissions Conduction Emission Status ...

Page 10: ... 4 6 3 400 4 9 4 000 0 12 RLR 2 3 dB Frequency Hz Max dB Min dB 100 12 200 0 300 2 7 500 5 13 Receiving Response 1 000 0 5 3 000 2 5 3 400 2 10 4 000 2 Mean that Adopt a straight line in between 300 Hz and 1 000 Hz to be Max level in the range 14 STMR 13 5 dB 15 Stability Margin 6 dB dB to ARL dB Level Ratio dB 35 17 5 30 22 5 16 Distortion 20 30 7 10 33 3 0 33 7 7 31 7 10 25 5 17 Side Tone Distor...

Page 11: ...e 500 mA Slow Charge 60 mA Antenna Bar Number Power 5 85 dBm 4 90 dBm 86 dBm 24 Antenna Display 3 95 dBm 91 dBm 2 100 dBm 96 dBm 1 105 dBm 101 dBm 0 105 dBm Battery Bar Number Voltage 0 3 62 V 25 Battery Indicator 1 3 62 3 73 V 2 3 73 3 82 V 3 3 82 V 26 Low Voltage Warning 3 62 0 03 V Call 3 5 0 03 V Standby 27 Forced shut down Voltage 3 35 0 03 V 1 Li ion Battery Standard Voltage 3 7 V 28 Battery...

Page 12: ...r uses a low IF receiver architecture which allows for the on chip integration of the channel selection filters eliminating the external RF image reject filters and the IF SAW filter required in conventional superheterodyne architectures A RF front end RF front end consists of Antenna Switch FL401 two SAW Filters FL402 FL403 and dual band LNAs integrated in transceiver U402 The Received RF signals...

Page 13: ...ier PGA which is controlled with the AGAIN 2 0 bits in register 05h Figure3 2 The quadrature IF signal is digitized with high resolution A D converters ADCs The ADC output is downconverted to baseband with a digital 100KHz quadrature LO signal Digital decimation and IIR filters perform channel selection to remove blocking and reference interference signals The selectivity setting CSEL 0 or a low s...

Page 14: ...seband signals caused by imperfections in the D A converters The Tx Modulator implements a quadrature modulator A quadrature mixer upconverts the differential in phase TXIP TXIN and quadrature TXQP TXQN signals with the IFLO to generate a SSB IF signal that is filtered and used as the reference input to the OPLL The IFLO frequency is generated between 766 and 896 MHz and internally divided by 2 to...

Page 15: ...plexed VCOs The RF1 VCO is used for receive mode and the RF2 VCO is used for transmit mode The IF PLL is used only during transmit mode All VCO tuning inductors are also integrated The IF and RF output frequencies are set by programming the N Divider registers NRF1 NRF2 and NIF Programming the N Divider register for either RF1 or RF2 automatically selects the proper VCO The output frequency of eac...

Page 16: ... directly from the DAC output The device is designed for use as the final RF amplifier in GSM 850 E GSM 900 DCS and PCS handheld digital cellular equipment and other applications in the 824 849 MHz 880 915 MHz 1710 1785 MHz and 1850 1910 MHz bands On board power control provides over 37 dB of control range with an analog voltage input TX_RAMP and power down with a logic low for standby operation T...

Page 17: ...3522 U202 MIC5255 U410 supplies power to transceiver SI4205 U402 One port of ADP3522 supplies power to VCTCXO X401 Main power VBAT from battery is used for PAM RF3133 U401 because PAM requires high power 1608 GND 2 OUT 3 4 VCC VCONT 1 X401 13MHz 2V75_VTCXO 1000p C434 C437 2 2u 15K R413 R412 100 AFC Figure 3 6 VCTCXO circuit diagram VBAT C457 10u BYP 4 3 EN 2 GND IN 1 OUT 5 MIC5255 2 85BM5 U410 C43...

Page 18: ...nd Instruction Cache The microcontroller subsystem supports all the GSM terminal software including the layer 1 2 and 3 of the GSM protocol stack the MMI and applications software such as data services test and maintenance It is tightly associated with on chip system SRAM and also includes boot ROM memory with a small dedicated routine to facilitate the initialization of the external Flash Memory ...

Page 19: ...ip system SRAM and external memory such Flash Memory The access to the SRAM module is made through the RAM Bus RBUS under the control of the bus arbitration logic Similarly access to the Flash Memory is through the parallel External Bus EBUS Figure 3 9 Example of System Interconnection of AD6525 External Interfaces ...

Page 20: ...determines whether the data to LCD module are display data or control data ADD1 can select 16 bit parallel bus ADD1 is also used to address flash memory WR Write control DATA 0 15 Parallel data lines Color LCD driver chip uses the 16 bit data interface LCD_BL Control signal for white LED LCD backlight driver IC LCD_ID Reserved for future use Table 3 3 LCD module interface GPO Signal Name Descripti...

Page 21: ...ADP3522 PMIC U202 Interface There are 4 signals for PMIC power management IC interface Description SIM_DATAOP This pin receives and sends data to SIM card This model support 3 0 volt interface SIM card SIM_CLK Clock 3 25 MHz frequency SIM_RST Reset SIM Block SIM_EN Enable SIM Block Table 3 5 SIM interface Description CHRDET The pin is activated when charger is inserted CHG_EN Enable charging EOC T...

Page 22: ...3 TECHNICAL BRIEF 23 3 6 Analog Main Processor AD6521 U102 1 Block Diagram Figure 3 10 Functional Block Diagram of AD6521 ...

Page 23: ...tor and a lowpass digital filter There are RXIP RXIN RXQP and RXQN 4 Auxiliary Section This section contains two auxiliary DACs AFC DAC IDAC for system control This section also contains AUX ADC and Voltage Reference AUX ADC 6 channel 10 bits AFC DAC 13 bits IDAC 10 bits 5 Voiceband Section Receive audio signal from MIC Send audio signal to Receiver The phones use differential configuration It int...

Page 24: ...SDO VSFS D2 F9 MCLK J2 MCLKEN K2 J9 NC1 NC2 B9 NC3 B6 B7 NC4 B10 QRXN QRXP C10 C9 QTXN D9 QTXP RAMPDAC H9 A8 REFCAP REFOUT A7 K1 RESET RXON J4 TCK J8 G2 BSDI F1 BSDO BSIFS F2 E2 BSOFS BUZZER J6 A2 DGND1 DGND2 J5 A1 DVDD1 DVDD2 G1 DVDD3 K5 IDACOUT B4 A3 IDACREF D10 IRXN IRXP E10 E9 ITXN ITXP AFCDAC AGND1 G9 AGND2 B8 J7 AGND3 AGND4 B3 J3 ARSM H1 ASDI J1 ASDO H2 ASFS ATSM K3 A6 AUXADC1 AUXADC2 A5 B5 ...

Page 25: ...3 TECHNICAL BRIEF 26 3 7 Power Management IC ADP3522 U202 Block Diagram Figure 3 12 Block Diagram of ADP3522 ...

Page 26: ...e Li Ion battery only Charger initialization trickle charging and constant current charging are implemented in hardware Pins used for charging CHGDET Interrupt to AD6525 when charger is plugged CHG_EN Control signal from AD6525 to charge battery EOC Interrupt to AD6525 when battery is fully charged GATE_EN Control signal from AD6525 to charge NiMH battery But not used TA Travel Adaptor Input volta...

Page 27: ...or Flash Memory and 32Mbit Pseudo SRAM It has 16 bit parallel data bus and 22 bit address Software RF calibration data audio parameters and battery calibration data are stored in the Flash memory 3 TECHNICAL BRIEF 28 Figure 3 13 Block Diagram of Memory ...

Page 28: ...enable input LB UB Data byte control inputs for Pseudo SRAM WP ACC Write protect program acceleration input for Nor Flash Memory RESET Hardware reset input for Nor Flash Memory BYTE Word Byte onput for Nor Flash Memory RY BY Ready Busy output for Nor Flash Memory Vccps power supply for Pseudo SRAM Vccf power supply for Nor Flash Memory Vss Ground DU Don t use NC Not connected Table 3 8 Pin Descrip...

Page 29: ...d in Table 3 3 2 LCD Backlight For LCD backlight illumination there are LCD_BL and DIM_CNTL signal from AD6525 128 x 160 LCD CONNECTOR 27p C324 C314 27p C313 27p VBAT 27p C333 2V8_VMEM 1K R342 C320 27p C323 27p SP304 27p C325 1K R340 R344 1K 1K R329 C326 27p C332 27p R333 1K 1K R335 C330 27p C331 27p R337 1K R348 1K 1K R346 27p C319 27p C318 27p C317 27p C316 27p C315 27p C322 C321 27p R328 1K C32...

Page 30: ...ssed the corresponding row and column are connected together causing the row input to go low and generate an interrupt The columns rows are then scanned by AD6525 to identify the pressed key VOL_UP VOL_DOWN VR102 680 R119 VR104 SW102 1 2 3 4 5 VR101 R118 680 3 4 5 SW101 1 2 R120 680 VR103 KEY_COL1 KEY_ROW0 KEY_COL0 KEY SP603 SP617 SP604 1K R614 1K R600 9 3 SELECT SP602 SP618 SP608 DOWN SP609 1K R6...

Page 31: ... KEY BACKLIGHT 20 R606 LD606 LD605 20 R613 LD602 20 R604 20 R607 VBAT R605 20 LD600 20 R609 R612 20 LD607 R608 20 LD604 R611 20 LD601 LD608 LD609 LD603 VBAT 20 R610 KEY_BL1 KEY_BL2 SP206 R232 20 R230 1 5K R231 20 20 R235 SP207 2 5 6 3 1 4 IMX9T110 Q202 100K R233 20 R234 KEY_BL2 KEY_BL1 KEY_BL Figure 3 16 Circuit Diagram of Key backlight illumination ...

Page 32: ...s a bias voltage for the VINNORP The VINNORP and VINNORN signals are A D converted by the Voiceband ADC part of AD6521 The digitized speech is then passed to the DSP section of AD6525 for processing coding interleaving etc MIC AVL5M02 200 VA600 2 MIC 1 10u C600 C603 39p 39p C601 1K R601 3 6K R615 39p C602 2V55_VAN VA601 AVL5M02 200 2K R603 MIC_P MIC_N Figure 3 17 Circuit Diagram of Microphone ...

Page 33: ...nalog switch U203 when it is used for loud speaker REC_SPK SPK SPK REC_SPK 10p C228 SP201 10p C231 0 1u C229 C230 0 1u 12 R215 3V3_VMIDI C222 47p VA201 AVL14K02200 C218 47p 2V8_VMEM SP202 0 R211 R213 82K 33K R212 C223 47p C224 10p 2V8_VMEM C220 1000p R228 3 3K 100K COM1 3 COM2 9 GND 6 4 IN1 8 IN2 NC1 5 7 NC2 2 NO1 10 NO2 1 V R217 NLAS4684MR2 U203 10p C226 CN210 1 2 10p C225 39p C217 0 R208 C216 39...

Page 34: ...229 C230 0 1u 3V3_VMIDI C222 47p U206 5 BYPASS 4 GND1 GND2 7 VEN 6 VIN 2 1 VOUT 3 VOUT_SE LP3981ILD 3 3 0 R211 R213 82K 33K R212 C223 47p C238 10u 2V8_VMEM C220 1000p R228 3 3K 0 R208 C216 390p 29 _IRQ 3 31 _RD 4 _RST 28 _WR 13 14 EQ3 HPOUT_L 10 HPOUT_R 11 IOVDD 32 2 LED MTR 19 NC 5 6 PLLC SPOUT1 17 18 SPOUT2 15 SPVDD 16 SPVSS VDD 7 VREF 9 8 VSS _CS 30 A0 1 CLK1 D0 27 D1 26 D2 25 D3 24 23 D4 22 D5...

Page 35: ...ok of the headset is pressed The pins JACK_DETECT and HOOK_DETECT interfaces with AD6525 1608 Headset jack NA C260 SP204 1 2 3 4 5 J201 20K R229 R219 20K 2V8_VMEM 1 5 VCC VIN 3 4 VIN R226 4 7 MAX9075EXK T U207 GND 2 OUT C232 2V8_VMEM 0 1u 2V8_VMEM R214 330K SP203 620K R220 0 1u C234 AVL14K02200 VA204 VA203 AVL14K02200 47p C239 SP205 C251 10u 2 GND 1 OUT VCC 5 3 VIN VIN 4 U205 MAX9075EXK T C237 39p...

Page 36: ...he direction of each of the two sensors Maker Aichi Micro Intelligent Japan Part No AMI201 Size 3 1X3 4X0 8 mm Sensing Method Magneto Impedance Axis X Y axis Resolution 1 Degree 6pins Control Pin 2 pin CS XYIN Output Pin 1 pin OUT Power Pin 3 pins VDD GND1 GND2 1 1 1 R363 1K C358 10u CS 2 1 GND1 6 GND2 OUT 5 VDD 3 XYIN 4 AMI201 U304 R500 3 9K 2V8_VMEM C357 0 1u R365 1K 1K R361 27p C360 C359 27p C3...

Page 37: ...UBLE SHOOTING U402 SW401 U401 FL401 FL402 FL403 U410 X401 Figure 4 1 Reference Description Reference Description U402 RF Main Chipset FL402 GSM SAW Filter SW401 Mobile S W FL403 DCS SAW Filter FL401 Ant S W X401 VCTCXO U401 PAM U410 LDO Table 4 1 ...

Page 38: ...0dBm setting BCCH START 5 Check Ant SW 3 Check Control Signal Redownload SW CAL SS Test mode Spectrum analyzer setting Oscilloscope setting 2 Check VCTCXO Circuit 1 Check Regulator Circuit 1 2 4 5 6 3 7 Check RX IQ 4 Check Mobile SW 6 Check Saw Filter Circuit 7 Figure 4 2 ...

Page 39: ...oard RF 2 85V O K Yes No Replace U410 Regulator Circuit is OK See next Page to check VCTCXO No Check Pin 3 Check Pin 5 VRF U410 3 U410 5 VBAT C457 10u BYP 4 3 EN 2 GND IN 1 OUT 5 MIC5255 2 85BM5 U410 C438 0 01u 10u C456 RF2 85V R489 6 8K CLK_ON Graph 4 1 Figure 4 3 Circuit Diagram 4 1 ...

Page 40: ...rcuit is OK See next Page to check ANT SW Mobile SW Yes Check Pin 4 Refer to Graph 4 4 2 75V OK No Yes Changing X401 Check U202 PMIC X401 4 X401 3 AD6535_AFCDAC 1608 GND 2 OUT 3 4 VCC VCONT 1 X401 13MHz 2V75_VTCXO 1000p C434 C437 2 2u 15K R413 R412 100 AFC Graph 4 2 Graph 4 3 Figure 4 4 Circuit Diagram 4 2 ...

Page 41: ...is High Yes Control Signal is OK See next Page to check ANT SW Mobile SW No Check TP 402 403 404 Check if there is Any Major Difference Refer to Graph 4 5 Similar Yes No Download the SW Download the SW S_CLK TP403 S_EN TP402 RF_PWR_DWN TP401 S_DATA TP404 Graph 4 4 Graph 4 5 Figure 4 5 ...

Page 42: ... as RX mode Yes Changing SW401 Changing the Board Changing FL401 Check RF Level of FL401 pin10 for EGSM pin 1 for DCS No No No No For these 2 test case No Call connection is needed For this RF Level test case RX Stand alone Mode is needed Sw401 Pin1 FL401 FL403 C426 C428 L404 L403 C424 C422 FL402 C433 C436 SW401 Pin2 GPO_11 GPO_9 10p C436 C411 22p GND2 7 GND3 9 GND4 12 GND5 13 GND6 GND7 14 11 VC1 ...

Page 43: ...l solded for EGSM and DCS FL402 3 402 4 65dBm FL403 3 403 4 66dBm Check RF Level of Saw Filter Output For EGSM FL402 3 402 4 For DCS FL403 3 403 4 Check the parts are well solded for EGSM and DCS Soldering is OK Changing FL402 for EGSM FL403 for DCS No Changing L403 or C422 or C424 for EGSM L404 or C426 or C428 for DCS Yes FL403 C426 C428 L404 L403 C424 C422 FL402 C423 L403 22nH L404 6 8nH C428 1 ...

Page 44: ...g RX IQ Redownload the Software And calibrate Check C419 C421 Check if there is Any Major Difference Refer to Graph 4 6 Similar Yes No Replace U402 C419 C421 C421 39p C419 39p RXQN RXQP RXIN RXIP Graph 4 6 figure 4 8 Circuit Diagram 4 5 ...

Page 45: ...level setting TCH 62 CH 60dBm setting BCCH Spectrum analyzer setting Oscilloscope setting START 2 Check VCTCXO Circuit 1 Check Regulator Circuit 3 Check Control Signals 5 Check PAM Control Signal 4 Check TX IQ 6 Check Ant SW Mobile SW 1 2 3 4 5 6 7 Check Ant contect Figure 4 9 ...

Page 46: ...ard RF 2 85V O K Yes No Replace U410 Regulator Circuit is OK See next Page to check VCTCXO No Check Pin 3 Check Pin 5 VRF U410 3 U410 5 VBAT C457 10u BYP 4 3 EN 2 GND IN 1 OUT 5 MIC5255 2 85BM5 U410 C438 0 01u 10u C456 RF2 85V R489 6 8K CLK_ON Graph 4 7 Figure 4 10 Circuit Diagram 4 6 ...

Page 47: ...CXO Circuit is OK See next Page to check ANT SW Mobile SW Yes Check Pin 4 Refer to Graph 4 4 2 75V OK No Yes Changing X400 Check U301 PMIC X401 4 X401 3 1608 GND 2 OUT 3 4 VCC VCONT 1 X401 13MHz 2V75_VTCXO 1000p C434 C437 2 2u 15K R413 R412 100 AFC Graph 4 8 Graph 4 9 figure 4 11 Circuit Diagram 4 7 ...

Page 48: ...Control Signal is OK See next Page to check ANT SW Mobile SW No Check TP 402 403 404 Check if there is Any Major Difference Refer to Graph 4 5 Similar Yes No Download the SW Download the SW Figure 4 12 S_CLK TP403 S_EN TP402 RF_PWR_DWN TP401 S_DATA TP404 Graph 4 10 Graph 4 11 figure 4 12 ...

Page 49: ... TX IQ Redownload the Software And calibrate Check C425 C427 Check if there is Any Major Difference Refer to Graph 4 12 Similar Yes No Replace U402 C425 C427 39p C427 C425 39p TXQN TXIP TXIN TXQP Graph 4 12 figure 4 13 Circuit Diagram 4 8 ...

Page 50: ... Signal Go to Next Step Check TX_RAMP and PA_EN Check if there is Any Major Difference or not Refer to Graph 4 13 Similar Yes Download S W TX_RAMP PA_EN PA_BAND For DCS PA_BAND High For GSM PA_BAND Low OK Yes No No Change board Graph 4 13 Figure 4 14 ...

Page 51: ...n 3 26 5dBm No Yes No Go to 4 3 5 Checking PAM control signal END For the test TX Stand alone Mode is needed Refer to chapter 11 PL 7 for GSM PL 2 for DCS Table 4 3 L L EGSM DCS RX L H GSM TX H L DCS TX VC2 VC1 ANT SW Changing board Sw401 Pin1 FL401 FL403 C426 C428 L404 L403 C424 C422 FL402 C433 C436 SW401 Pin2 GPO_11 GPO_9 10p C436 C411 22p GND2 7 GND3 9 GND4 12 GND5 13 GND6 GND7 14 11 VC1 2 VC2 ...

Page 52: ...4 TROUBLE SHOOTIng 53 Graph 4 14 GSM TX Graph 4 15 DCS TX ...

Page 53: ... OK Yes Contact antenna Tx ok good Yes Change the board No No ANT2 GND is short Yes Check R401 C402 C401 soldering No Yes No Resolder C460 END OK OK Resoldering R401 C402 C401 C460 C402 R401 C401 C402 NA ANT1 C401 1 5p 5p R401 C460 0 ANT2 Figure 4 16 Circuit Diagram 4 10 ...

Page 54: ...nd check the level change of U202 Pin 30 Check the voltage of the following pins at U301 Pin 21 1 8V Pin 25 2 75V Pin 20 2 8V Pin 3 2 0V Logic level at pin 29 of U202 HIGH Charge or Change Battery Check the contact of power key or dome switch Replace U301 Redownload software SETTING Connect PIF and set remote switch off at PIF Refer to Figure 4 17 ...

Page 55: ... G 4 5 S Q201 TPCF8102 D201 CUS02 1000p VCHARGE C202 C201 VBAT 0 1u SIMVSEL 8 TCXOEN 28 23 VAN 22 VBAT 19 VBAT2 21 VCORE 20 VMEM VRTC 3 VRTCIN 2 VSIM 18 25 VTCXO 30 _PWRONKEY _RESET 16 CHRIN 7 11 DGND 13 EOC 9 GATEDR 10 GATEIN 33 GND 12 ISENSE 5 MVBAT NC1 17 24 NC2 NC3 32 29 PWRONIN 26 REFOUT RESCAP 15 ROWX 31 1 SIMEN U202 ADP3522XCP 3 27 AGND 4 BATSNS CHGEN 14 6 CHRDET C213 0 1u 2 2u 0 33 R203 C2...

Page 56: ...in 7 of U202 5 2V R203 Q201 D201 well soldered Voltage across D201 0 3V Voltage across R203 is 160mV 0 7 Voltage Q201 1 3V Is the battery charged Re solder CN310 Re solder R203 Q201 D201 Replace D201 Replace R203 Replace Q201 The charging adaptor TA is out of order Change the charging adaptor The battery may have the problem Change the battery and try again CHARGING WILL OPERATE PROPERLY No No No ...

Page 57: ...1000p VCHARGE C202 C201 VBAT 0 1u SIMVSEL 8 TCXOEN 28 23 VAN 22 VBAT 19 VBAT2 21 VCORE 20 VMEM VRTC 3 VRTCIN 2 VSIM 18 25 VTCXO 30 _PWRONKEY _RESET 16 CHRIN 7 11 DGND 13 EOC 9 GATEDR 10 GATEIN 33 GND 12 ISENSE 5 MVBAT NC1 17 24 NC2 NC3 32 29 PWRONIN 26 REFOUT RESCAP 15 ROWX 31 1 SIMEN U202 ADP3522XCP 3 27 AGND 4 BATSNS CHGEN 14 6 CHRDET C213 0 1u 2 2u 0 33 R203 C210 1V8_VCORE 0 1u C205 R209 100K C...

Page 58: ...ction between Module and board is OK No Reconne ct LCD Module Yes CN303 is soldered well No Resolder the CN303 Yes Paths of LCD control signals are OK No Resolder R328 R349 After changing the board LCD Displa y is OK No The board is broken Change the board LCD Module i s out of order Change the LCD Module Yes Yes ...

Page 59: ...331 27p C344 27p 27p C341 R338 1K 1K R336 R337 1K R348 1K 1K R346 27p C335 R345 1K 27p C351 27p C319 27p C318 27p R347 C317 1K 27p C316 27p C315 27p C336 27p C322 C321 27p C337 27p R328 1K C328 C329 27p 27p 27p 27p C339 C342 C340 27p R343 1K 27p C345 4 5 6 7 8 9 12 13 14 15 16 17 18 19 2 20 21 22 23 24 25 26 3 CN303 1 10 11 27p C334 C327 27p LCD_RST LCD_ID DIM_CNTL LCD_BL WR DATA01 DATA03 DATA05 D...

Page 60: ...SP201 10p C231 12 R215 VA201 AVL14K02200 C218 47p 2V8_VMEM SP202 C224 10p 100K COM1 3 COM2 9 GND 6 4 IN1 8 IN2 NC1 5 7 NC2 2 NO1 10 NO2 1 V R217 NLAS4684MR2 U203 10p C226 CN210 1 2 10p C225 39p C217 R216 12 AVL14K02200 VA202 SPK_SEL REC_N REC_P 4 TROUBLE SHOOTING 61 Figure 4 21 Circuit Diagram 4 14 ...

Page 61: ...al is low Resolder the U203 and R217 Otherwise change it Replace the receiver Set audio part at test equipment as PRBS or continuous w ave not echo Does sine wave appear at R215 R216 Check the contact State of receiver Is it OK No Trouble Check the soldering state of U203 and R217 Is it OK DBB is out of order Change the board ...

Page 62: ...ng of U202 Is it OK No No Re solder U202 Replace U202 Yes Check the si gnal level Of C222 C223 Are they a few mV No Replace U204 Resolder the U203 and R217 Otherwise change it No Trouble DBB is out of order Change the board SPK_SEL signal is high Yes No Check the soldering state of U203 and R217 Is it O K No Check the contact State of speaker Is it OK Replace speaker SETTING Connect PIF to the pho...

Page 63: ... SPK 0 1u C229 C230 0 1u 3V3_VMIDI C222 47p 0 R211 R213 82K 33K R212 C223 47p 2V8_VMEM C220 1000p R228 3 3K 0 R208 C216 390p 29 _IRQ 3 31 _RD 4 _RST 28 _WR 13 14 EQ3 HPOUT_L 10 HPOUT_R 11 IOVDD 32 2 LED MTR 19 NC 5 6 PLLC SPOUT1 17 18 SPOUT2 15 SPVDD 16 SPVSS VDD 7 VREF 9 8 VSS _CS 30 A0 1 CLK1 D0 27 D1 26 D2 25 D3 24 23 D4 22 D5 21 D6 20 D7 EQ1 12 EQ2 YMU762 U204 C227 0 1u 0 01u C215 DATA09 DATA1...

Page 64: ...2 55V DC Replace the U202 Resoldering R601 Check the C601 voltage almost 1 9V C603 voltage a few hundred mV Check the soldering R603 Replace the MIC Resoldering R603 MIC Working Yes Yes Yes Yes Yes No No No No MIC AVL5M02 200 VA600 2 MIC 1 10u C600 C603 39p 39p C601 1K R601 3 6K R615 39p C602 2V55_VAN VA601 AVL5M02 200 2K R603 MIC_P MIC_N Figure 4 24 Circuit Diagram 4 17 ...

Page 65: ...es to 2 8V Resolder R108 Is the Voltage at pin 3 of U103 near 0 V No Check the soldering of R108 Resolder R107 Check the soldering of R107 Replace U103 No Yes Yes No Check the nodes of vibrator Replace virator Yes No Vibrator contack check SETTING Enter The engineering mode and set Vibrator on at Vibration of BB test menu ...

Page 66: ...O_3 D9 GPIO_4 B11 GPIO_5 GPIO_6 A11 GPIO_7 C10 GPIO_8 D8 A10 D11 GPIO_0 GPIO_1 D10 B12 R107 4 7 VBAT 2 GND VIN 1 3 VOUT U103 MDC3105LT1 L101 100nH INDLED_G1 USC6 SPK_SEL SLIDE JACK_DET CHRDET MIDI_IRQ USC0 USC1 USC2 USC3 USC4 USC5 MON_RX MON_TX U101 AD6525ACA REEL Contact Point C117 U103 L101 R108 R107 Figure 4 25 Circuit Diagram 4 18 ...

Page 67: ...605 SETTING Connect PIF to the phone and power on Enter engineering mode and set Backlight on at BB test Backlight menu START PIF Power On Check the soldering R230 R233 Is the Voltage at pin 5 at Q202 about 1 3 V Key backlight LED No Check the soldering and replace LEDs not working Are all LEDs LD600 LD609 Working Yes Replace Q202 and try again Yes No Figure 4 26 ...

Page 68: ...n 18 of U202 2 85V Replace U202 Check the soldering condition of J100 Yes Resolder J100 Check the contact between J100 and SIM card Replace J100 Check the SIM and try again Does it work properly Does it work properly after redownloading S W Change the main board SIM will be detected Yes Yes Yes Yes No No No No No No PIN 1 PIN 4 Yes Setting Insert the SIM into J301 Connect PIF to the phone and powe...

Page 69: ...ment to echo mode Set the audio part of the test equipment to PRBS or continuous wave mode Change the earphone Can you hear your voice from the earphone Change Earphone Yes No Can you hear the sound from the earphone Yes No 2 3 and try again No Voltage at Pin4 of U207 Is higher than pin3 Right Resolder R223 R220 J201 Resolder or replace U207 Voltage at Pin1 of U207 2 8V Change the main board No No...

Page 70: ...nload software Does it work well Change the main board No Yes Voltage at Pin 4 of U205 1 5 1 9 VDC Yes No Resolder R226 C240 No Resolder C122 Yes Resolder C232 Does it work well Yes No Redownload software Does it work well No Change Yes Yes the main board Is the signal level a few tens or hundreds VAC across C122 3 1 ...

Page 71: ...K_P HEADSET_MIC_P HEADSET_MIC_N JACK_DET CLOSE TO AD6521 CLOSE TO AD6521 1608 39p C125 39p C112 39p C115 1K R105 1u C111 C123 39p 2V8_VMEM 120K R103 82K R106 R111 100 100 R109 C114 10p 39p C124 39p C122 C120 39p C121 C126 0 1u 39p 39p C116 39p C129 0 1u C113 0 1u C130 G10 VINAUXN VINAUXP H10 K10 VINNORN VINNORP J10 K6 VOUTAUXN K9 VOUTAUXP VOUTNORN K7 K8 VOUTNORP J9 NC1 NC2 B9 NC3 B6 B7 NC4 RAMPDAC...

Page 72: ...4 TROUBLE SHOOTING 73 4 14 Compass Trouble Remove magnetic and electronic equipment for example Speaker Monitor etc Before You test ...

Page 73: ...S U304 C357 COMPASS_OUT R365 COMPASS_XYIN R500 R363 R364 1 1 1 R363 1K C358 10u CS 2 1 GND1 6 GND2 OUT 5 VDD 3 XYIN 4 AMI201 U304 R500 3 9K 2V8_VMEM C357 0 1u R365 1K 1K R361 27p C360 C359 27p C356 27p C355 27p R364 1K COMPASS_OUT COMPASS_XYIN COMPASS_CS Figure 4 29 Circuit Diagram 4 21 ...

Page 74: ... test LED Backlight Select Back 1 2 3 4 5 6 Use cal sta Fact cal st Display Ang Cal value1 Cal value2 Select Back 1 2 3 4 5 Use cal sta Fact cal st Display Ang Cal value1 Cal value2 Select Write Compass Defult Cal Data when These are Zero Back 1 2 3 4 5 Kev pad MicSpk Test Compass All auto test LED Backlight 1 2 3 4 5 6 Use cal sta Fact cal st Display Ang Cal value1 Cal value2 Back Deg 256 H 260 B...

Page 75: ...5 DISASSEMBLY INSTRUCTION 76 5 1 Disassembly 5 DISASSEMBLY INSTRUCTION 1 2 ...

Page 76: ...5 DISASSEMBLY INSTRUCTION 77 1 2 ...

Page 77: ...5 DISASSEMBLY INSTRUCTION 78 1 2 ...

Page 78: ...5 DISASSEMBLY INSTRUCTION 79 2 3 4 1 ...

Page 79: ...6 1 Download A Download Setup Figure 6 1 describes Download setup 6 DOWNLOAD AND CALIBRATION 6 DOWNLOAD AND CALIBRATION 80 UART Figure 6 1 Download Setup ...

Page 80: ...TION 81 B Download Procedure 1 Access Flash loader program in PC and select Erase Donᴗ t check OWCD 2 Press Start and Wait until Erase is completed Code erase 1 Select Erase 2 Check 3 Don t Check OWCD 1 Press Start and Wait ...

Page 81: ...0 and Press Start and Wait until Erase is completed again Alchemy 8W8Cerase 4 Press Write to start Download and press Key to choose software AlchemyData mot 6 DOWNLOAD AND CALIBRATION 82 1 Select File 2 Press Open 2 Wait until completion 1 Don t Check OWCD ...

Page 82: ...6 DOWNLOAD AND CALIBRATION 83 5 Choose software 6 Wait until converting from MOT to BIF is completed Don t check OWCD 1 Select File 2 Press Open 2 Wait until completion 1 Don t Check OWCD ...

Page 83: ...7 Press Start and Power on the phone using JIG remote Power on Switch 1 8 Wait until Sending Block is completed 6 DOWNLOAD AND CALIBRATION 84 ...

Page 84: ...6 DOWNLOAD AND CALIBRATION 85 9 Press Write to start Download and press Key to choose software CodeData mot 10 Choose software ...

Page 85: ...11 Wait until Sending Block is completed 6 DOWNLOAD AND CALIBRATION 86 1 Wait Until Sending Block is completed ...

Page 86: ... Brand Wireless Communication Test Set HP 8960 Agilent RS 232 Cable and Test JIG LG RF Cable LG Power Supply HP 66311B Agilent GPIB interface card HP GPIB Agilent Calibration Final test software LG Test SIM Card PC for Software Installation Pentium II class above 300MHz Table 6 1 Calibration Equipment List Figure 6 2 ...

Page 87: ...hone battery LED 3 UART Indicate data transfer state through the UART port LED 4 MON Indicate data transfer state through the MON port Power Source Description Power Supply usually 4 0V Travel Adaptor Use TA name is TA 20G 24pin Switch Number Name Description Switch 1 ADI REMOTE In ON state phone is awaked It is used ADI chipset Switch 2 TI REMOTE In ON state phone is awaked It is used TI chipset ...

Page 88: ...e 3 rd 4 th of DIP SW ON state always 4 Press the Phone power key if the Remote ON is used 1 st ON state D Procedure 1 Connect as Fig 6 2 RS232 serial cable is connected between COM port of PC and MON port of TEST JIG in general 2 Power ON PC then enter into Windows 98 Remark Windows 2000 system could be feasible 3 Run AUTOCAL exe the AUTOCAL application window will be appeared ...

Page 89: ...OUT RST CHRDET EOC GATE_EN CHG_EN IO Connector USC 0 5 MON_RX VCHARGE LCD Connector DATA 0 7 RST CS BL WR JACK_DET HOOK_DET HEADSET_SPK HEADSET_MIC VIB ATOR INDI CATOR LED2 MOTOR DRIVER INDI CATOR LED1 Analog S W1 Analog S W2 INDLED_G2 INDLED_G 1 INDLED_R1 INDLED_R2 VCHARGE VCHARGE VCORE VMEM VAN VTCXO VSIM VSIM 32KHz OCS OUT OCS IN VTCXO VCORE VMEN VBAT LDO VMIDI MIDI_ PWR MIC MIC VRTC VRTC BACKU...

Page 90: ...1 AD6525ACA REEL TP103 VR104 TP112 2V55_VAN 120K R103 47n C102 R107 4 7 82K R106 VSIM TP109 2V8_VMEM 100K R101 SP101 TP102 TP117 _F_WE TP101 JTAG1 GND JTAGEN RPWON TCK TDI TDO_0 TDO_1 TMS VBAT VSIM TP111 R111 100 SW102 1 2 3 4 5 VR101 R118 680 VBAT 47n C107 OJ1 100 R109 3 1 2 C114 10p D101 KDS121E 39p C124 100K R102 220K R114 C137 1000p 47n C103 SP102 C138 100 R115 NA 3 CLK GND1 4 7 GND2 GND3 8 9 ...

Page 91: ...0u 2V8_VMEM BAT1 C220 1000p R228 3 3K 100K COM1 3 COM2 9 GND 6 4 IN1 8 IN2 NC1 5 7 NC2 2 NO1 10 NO2 1 V R217 2 GND 1 OUT VCC 5 3 VIN VIN 4 NLAS4684MR2 U203 U205 MAX9075EXK T 0 22u C212 10p C226 VBAT C237 39p 2V5_JACK 2V5_JACK C254 1uF 1uF C255 39p C233 CN210 1 2 39p C235 VBAT R222 1M 10K R206 1M R227 20 R235 100K R202 SP207 10p C225 39p C217 D1 1 D2 2 D3 3 D4 6 D5 7 8 D6 G 4 5 S 2 5 6 3 1 4 Q201 T...

Page 92: ...1MUWT86 18 19 2 20 21 22 23 24 25 26 27 28 29 3 30 1 10 11 12 13 14 15 16 17 R333 1K CN302 1K R335 VA308 VA307 SP301 C357 0 1u 2V55_VAN VBAT R365 1K 1K R361 27p C360 C359 27p C356 27p VA303 VBAT C306 1u C330 27p C331 27p C344 27p 27p C341 R338 1K 1K R336 R337 1K R348 1K 1K R346 27p C335 47K R354 0 1u C371 R345 1K 27p C351 10K R371 C372 0 1u SP306 VA306 27p 47 R317 C319 2V8_VMEM 27p C318 27p R347 C...

Page 93: ...405 C438 0 01u C425 39p R499 27p C407 2V75_VTCXO C423 27p 33p C410 1000p 100 C434 C422 R404 2p C460 0 GND2 7 GND3 9 GND4 12 GND5 13 GND6 GND7 14 11 VC1 2 VC2 ANT2 FL401 SHS C090DR ANT 8 DCS_RX 1 3 DCS_TX 10 EGSM_RX 5 EGSM_TX 4 GND1 6 C429 0 022u ANT3 47 R405 C413 10u NA C456 100 R403 VBAT C402 NA C437 RF2 85V RF2 85V 2 G1 5 G2 1 IN 3 O1 4 O2 2 2u B7820 FL402 KMS 507 ANT G1 G2 RF TP403 C419 SW401 3...

Page 94: ... 10u C600 1u C609 SP609 VBAT R605 1K R621 20 R620 1K LD600 20 R609 R612 20 R616 1K 4 SP606 0 LD607 SP600 SP607 SHARP RIGHT R619 3 GND1 GND2 4 2 NC1 5 NC2 1 OUTPUT 7 PGND VDD 6 10K A3212EEH U600 R608 20 8 SP601 LD604 R611 20 LD601 C603 39p 39p C601 CONFIRM 1K R601 1 R622 1K LEFT LD608 STAR C604 1uF SP611 MENU SP615 SP612 SP614 1K R617 R618 1K 3 6K R615 2 39p 5 C602 CLR 6 SEND 7 SP610 C608 1u LD609 ...

Page 95: ... 96 9 PCB LAYOUT ...

Page 96: ... 97 9 PCB LAYOUT ...

Page 97: ... 98 Note ...

Page 98: ...nce for switching the engineering mode on is 2945 Pressing END will switch back to non engineering mode operation C Key Operation Use Up and Down key to select a menu and press select key to progress the test Pressing back key will switch back to the original test menu D Engineering Mode Menu Tree 10 ENGINEERING MODE Eng Mode BB Test RF Test MF Mode Trace option Call Timer Fact Reset S W version ...

Page 99: ...his value by up and down key 10 1 3 Backlight This menu is to test the LCD Backlight and Keypad Backlight 1 Backlight on LCD Backlight and Keypad Backlight light on at the same time 2 Backlight off LCD Backlight and Keypad Backlight light off at the same time 3 Backlight value This controls brightness of Backlight When entering into the menu the present backlight value in the phone is displayed Us...

Page 100: ...ECHARGE_LMT TEMP_LOW_LIMIT 10 1 8 Audio This is a menu for setting the control register of Voiceband Baseband Codec chip Although the actual value can be written over it returns to default value after switching off and on the phone 1 VbControl1 VbControl1 bit Register Value Setting 2 VbControl2 VbControl2 bit Register Value Setting 3 VbControl3 VbControl3 bit Register Value Setting 4 VbControl4 Vb...

Page 101: ... the previous menu after completing the test 10 3 1 All auto test LED LCD Backlight Vibrator Buzzer Key Pad Mic Speaker Compass are tested in order for a certain time 10 3 2 LED From Left RED LED to Right Orange LED are turned on one by one for about 1s then off 10 3 3 Backlight LCD Backlight and LED Backlight are on for about 1 5 seconds at the same time then off 10 3 4 Buzzer This menu is to tes...

Page 102: ...atically 10 3 8 MicSpkTest The sound from MIC is recorded for about 3 seconds then it is replayed on the speaker automatically 10 3 9 Compass This Menu has all of the Compas 1 User Cal Start Compass user Calibration Menu 2 Fact Cal Start Compass Factory Calibration Menu This menu isn t used because Compass Calibration Data is used Default Calibration Data 3 Display Angle This menu display Degree D...

Page 103: ...COM port Baudrate 38400 Leave the rest as default values B Tx 1 Selecting Channel Select one of GSM or DCS Band and input appropriate channel 2 Selecting APC a Select either Power level or Scaling Factor b Power level Input appropriate value GSM between 5 19 or DCS between 0 15 c Scaling Factor A Ramp Factor appears on the screen You may adjust the shape of the Ramp or directly input the values C ...

Page 104: ...LONE TEST 105 11 3 Means of Test a Select a COM port b Set the values in Tx or Rx c Select band and channel d After setting them all above press connect button e Press the start button Figure 11 1 HW test program ...

Page 105: ...11 STAND ALONE TEST 106 Figure 11 2 HW test setting Figure 11 3 Ramping profile ...

Page 106: ...Current Calibration settings to setting file cal File F Load Setting Load saved Calibration setting File F Make BIN ALL Make binary file after calibration finished File F Make BIN BAT Cal only Make binary file of battery cal data only after calibration finished File F Make Write BIN Make binary file after calibration finished then download it to the Flash Memory View V Tools Enable or disable Tool...

Page 107: ...ry address Enter the SS Ag8960 and PS Tektronix PS2521G GPIB address Screen ADC Channel Default ADC Calibration Channel Screen Auto Calibration Item Default Calibration Settings about Tx Rx ADC and write BIN file 12 AUTO CALIBRATION 108 Figure 12 1 Auto Calibration Program ...

Page 108: ...Config Table and temperature Config Table 12 7 Setting check com port and cable loss Select automatic calibration item If you uncheck one item calibration will stop from the unchecked item This is useful when you want to process only one item 12 8 How to do calibration A Connect cable between phone and serial port of PC B Connect Ag8960 equipment and Power Supply and phone C Set correct port and b...

Page 109: ... 110 Note ...

Page 110: ... 111 13 EXPLODED VIEW REPLACEMENT PART LIST 13 1 Exploded View ...

Page 111: ... 112 Note ...

Page 112: ...13 EXPLODED VIEW REPLACEMENT PART LIST 113 13 2 Replacement Parts Mechanic component Note This Chapter is used for reference Part order is ordered by SBOM standard on GCSC ...

Page 113: ...13 EXPLODED VIEW REPLACEMENT PART LIST 114 ...

Page 114: ...13 EXPLODED VIEW REPLACEMENT PART LIST 115 13 2 Replacement Parts Main component Note This Chapter is used for reference Part order is ordered by SBOM standard on GCSC ...

Page 115: ...13 EXPLODED VIEW REPLACEMENT PART LIST 116 ...

Page 116: ...13 EXPLODED VIEW REPLACEMENT PART LIST 117 ...

Page 117: ...13 EXPLODED VIEW REPLACEMENT PART LIST 118 ...

Page 118: ...13 EXPLODED VIEW REPLACEMENT PART LIST 119 ...

Page 119: ...13 EXPLODED VIEW REPLACEMENT PART LIST 120 ...

Page 120: ...13 EXPLODED VIEW REPLACEMENT PART LIST 121 ...

Page 121: ...13 EXPLODED VIEW REPLACEMENT PART LIST 122 ...

Page 122: ...13 EXPLODED VIEW REPLACEMENT PART LIST 123 ...

Page 123: ...13 EXPLODED VIEW REPLACEMENT PART LIST 124 ...

Page 124: ...13 EXPLODED VIEW REPLACEMENT PART LIST 125 ...

Page 125: ...13 EXPLODED VIEW REPLACEMENT PART LIST 126 ...

Page 126: ...13 EXPLODED VIEW REPLACEMENT PART LIST 127 13 3 Accessories Note This Chapter is used for reference Part order is ordered by SBOM standard on GCSC ...

Search results

Summary of Contents for F7100

Reviews:

Related manuals for F7100

Brands by name

Popular brands

LG F7100, Service Manual

Search results

Summary of Contents for F7100

Reviews:

Related manuals for F7100

Brands by name

Popular brands