LG W3000 Page 71 Service Manual Download

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4.4 Power On Trouble

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4. TROUBLE SHOOTING

SETTING : Connect PIF, and set remote switch off at PIF.

Summary of Contents for W3000

Page 1: ...GSM Phone SERVICE MANUAL MODEL W3000 P N XXXXX JUNE 2002 SERVICE MANUAL MODEL W3000 ...

Page 2: ...3 6 Digital Main Processor 19 3 7 Analog Main Processor 24 3 8 Power Management 26 3 9 Memories 28 3 10 Display and Interfaces 28 3 11 Keypad Switches and Scanning 29 3 12 Microphone 30 3 13 Earpiece 31 3 14 Hands free Interface 32 3 15 Headset Jack Interface 32 3 16 Key Back light Illumination 32 3 17 LCD Back light Illumination 33 3 18 Multi Color LED Illumination 33 3 19 Speaker MIDI IC 34 4 TR...

Page 3: ...option MENU 4 119 10 5 Call Timer MENU 5 119 10 6 Fact Reset MENU 6 119 10 7 S W version MENU 7 119 11 STAND ALONE TEST 120 11 1 Introduction 120 11 2 Setting Method 120 11 3 Means of Test 120 12 AUTO CALIBRATION 121 12 1 Overview 121 12 2 Requirements 121 12 3 Menu and settings 121 12 4 AGC 123 12 5 APC 123 12 6 ADC 123 12 7 Setting 123 12 8 How to do calibration 123 13 EXPLODED VIEW REPLACEMENT ...

Page 4: ...LGE Inc Furthermore LGE Inc reserves the right without notice to make changes to equipment design as advances in engineering and manufacturing methods warrant 0 This manual provides the information necessary to install program operate and maintain the W3000 DATE ISSUE CONTENTS OF CHANGES S W VERSION JULY 2002 ISSUE 1 Initial Release ...

Page 5: ...ufacturer will not be responsible for any charges that result from such unauthorized use B Incidence of Harm If a telephone company determines that the 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...

Page 6: ...pment medical equipment etc Interference from unsuppressed engines or electric motors may cause problems H Electrostatic Sensitive Devices ATTENTION Boards which contain Electrostatic Sensitive Device ESD are indicated by the sign Following information is ESD handling Service personnel should ground themselves by using a wrist strap when exchange system boards 0 When repairs are made to a system b...

Page 7: ...t Keying GPIB General Purpose Interface Bus GSM Global System for Mobile Communications IPUI International Portable User Identity IF Intermediate Frequency LCD Liquid Crystal Display LDO Low Drop Output LED Light Emitting Diode W3000 LG GSM Phone 3 LG Electronics OPLL Offset Phase Locked Loop PAM Power Amplifier Module PCB Printed Circuit Board PGA Programmable Gain Amplifier PLL Phase Locked Loop...

Page 8: ...ision Duplex TDMA Time Division Multiple Access UART Universal Asynchronous Receiver Transmitter VCO Voltage Controlled Oscillator VCTCXO Voltage Control Temperature Compensated Crystal Oscillator WAP Wireless Application Protocol ...

Page 9: ...SI 85 dBm Charging time 3hours RX Sensitivity GSM EGSM 105dBm DCS 105dBm TX output power GSM EGSM 32 dBm Level 5 DCS 29dBm Level 0 SIM card type 3V Small Display 128 64 pixel LCD Hard icons Key Pad Status Indicator 0 9 Up Down Navigation Key Confirm Key Clear Key Send Key END PWR Key ANT Internal EAR Phone Jack Yes PC Synchronization No Speech coding EFR FR HR Data and Fax Yes Vibrator Yes Receive...

Page 10: ... 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 dBm 3d...

Page 11: ...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 12: ...0 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 Disto...

Page 13: ...ht of phone set off At least 80 dB under below conditions 23 Ringer Volume 1 Ringer set as ringer 2 Test distance set as 50 cm 24 Charge Voltage Fast Charge 500 mA Slow Charge 60 mA Antenna Bar Number Power 5 85 dBm 4 90 dBm 86 dBm 25 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 26 Battery Indicator 1 3 62 3 73 V 2 3 73 3 82 V 3 3...

Page 14: ... integrated a direct conversion receiver architecture which eliminates the need of Intermediate Frequency a transmitter based on a modulation loop architecture and fractional N synthesizer part with built in TXVCO and Local VCO 3 2 Receiver The Receiver part in CX74017 contains all active circuits completely full receiver chain with the exception of discrete front end RF SAW filters The filtered a...

Page 15: ... B Demodulator and baseband processing In direct conversion receiver there is only one mixer down converting received RF signal to BB signal directly The gain down converting mixer is 40dB at high gain mode and 22dB at low gain mode The Rx gain setting is done in the AGC algorithm The nominal gain of the receiver is set as a function of the expected signal strength at the antenna input so that a d...

Page 16: ...detector diodes power control IC and other power control circuitry This allows the module to be driven directly from the DAC output The PA outputs from the directional coupler pass to the antenna connector via Antenna Switch A IF Modulator The baseband converter BBC within the GSM chipset generates I and Q baseband signals for the transmit vector modulator The modulator provides more than 40dBc of...

Page 17: ...rect RF channel is frequency modulated with the original GMSK data The OPLL acts as a tracking narrowband band pass filter tuned to the desired channel frequency This reduces the wideband noise floor of the modulation and up conversion process and provides significant filtering of spurious products C Synthesizer The CX74017 includes a fully integrated UHF VCO with an on chip LC tank A single sigma...

Page 18: ...utput power for E GSM and the 45 for DCS1800 This module should be operated under the GSM burst pulse To avoid permanent degradation CW operation should not be applied To avoid the oscillation at no input power before the input is cut off the control voltage Vapc should be control to less than 0 5V We have to improve thermal resistance the through holes should be layouted as many as possible on PC...

Page 19: ... 5 Power Supplies and Control Signals There are two regulators used in the phone to provide RF power One is contained inside of ADP3408 U101 power management IC to provide the power for the VCTXO X401 The other is used to provide the power for remaining RF circuits Table 3 2 Figure 3 5 Regulator Circuit 3 TECHNICAL BRIEF 18 Regulator Voltage Powers Enable Signal Regulator 1 U101 2V7_VTCXO 2 7 V 0 ...

Page 20: ...ajor difference between the readings taken and those indicated then further investigation of that particular point will be required It will also be necessary to ensure that all the following power supplies and signals are present which control this part of the receiver circuit 1 The Control Signal of FEM see Fig 3 15 16 17 2 RF2V8 see Fig 3 12 3 2V7_VTCXO see Fig 3 13 4 13MHz see Fig 3 14 5 CLK DA...

Page 21: ...between the readings taken and those indicated then further investigation of that particular point will be required It will also be necessary to ensure that all the following power supplies and signals are present which control this part of the transmitter circuit 1 The Control Signal of FEM see Fig 3 15 16 17 2 RF2V8 see Fig 3 12 3 2V7_VTCXO see Fig 3 13 4 13 MHz see Fig 3 14 5 TXEN TXRAMP TXPA s...

Page 22: ...e Figure 3 6 RF components Component Side Reference Description Reference Description U441 RF Main Chipset FL406 Dual SAW Filter CN303 Mobile S W X401 VCTCXO FL405 Ant S W U414 LDO U416 PAM U413 Inverter IC CN303 FL405 U416 FL406 U441 U414 X401 U413 ...

Page 23: ...Test point of Rx Levels Figure 3 7 Test point of Rx Levels 3 TECHNICAL BRIEF 22 2 1 3 4 ...

Page 24: ...Test point of TX Levels Figure 3 8 Test point of TX Levels 1 3 TECHNICAL BRIEF 23 9 5 6 7 8 10 ...

Page 25: ...3 TECHNICAL BRIEF 24 Control signal test points 1 Figure 3 9 Control signal test points 1 VC2 U448 VC1 U444 RF 2 85V TXQN TXIN TXQP TXIP TXQN TXIN TXQP TXIP 13MHz CLock 2V7_VCTCXO TXRAMP R401 TXPA R404 ...

Page 26: ...3 TECHNICAL BRIEF 25 Control signal test points 2 Figure 3 10 Control signal test points 2 TP409 LE TP408 Clock TP407 Data TP404 RXEN ...

Page 27: ...3 TECHNICAL BRIEF 26 Figure 3 11 Transmitter Receiver RF Levels ...

Page 28: ...3 TECHNICAL BRIEF 27 Figure 3 12 Regulator Output RF2V8 Figure 3 13 VCTCXO Power Supply 2V7_VTCXO ...

Page 29: ...3 TECHNICAL BRIEF 28 Figure 3 14 13MHz Clock Figure 3 15 Control Signal of FEM in Rx mode GSM DCS both ...

Page 30: ...3 TECHNICAL BRIEF 29 Figure 3 16 Control Signal of FEM in GSM TX mode Figure 3 17 Control Signal of FEM in DCS TX mode ...

Page 31: ...3 TECHNICAL BRIEF 30 Figure 3 18 LE Clcok Data Figure 3 19 TXEN TARAMP TXPA ...

Page 32: ...3 TECHNICAL BRIEF 31 Figure 3 20 TX IQ Signal Figure 3 21 RX IQ Signal TXIP TXQN ...

Page 33: ...h memory for code and data RBUS is for internal RAM access PBUS is for access to internal peripheral modules such as UART RTC or SIM In addition to the three main system busses it has SBUS IOBUS and DMABUS DSP subsystem It consists of ADI DSP Viterbi coprocessor Ciphering unit and a cache memory controller system The DSP can run at a maximum clock frequency of 78MHz at 2 45V The Viterbi and cipher...

Page 34: ...or subsystem Peripheral subsystem It contains four major groups of elements The MMI group is a collection of all the functionality that are needed to implement a complete user interface including keyboard display backlight RTC general purpose I O etc House Keeping group consists of three different sub modules The Watch Dog Timer the Interrupt Controller and the general timers GSM system group cons...

Page 35: ...y 3 0 volt interface SIM card Key interface Include 5 column and 5 row The AD6522 detect key press by interrupt AD3408 interface EOC End Of Charge Charging would be stopped when AD6522 receive this signal CHARGERDETECT This interrupt is generated when charger is inserted RF interface The AD6522 control RF parts through TXEN RXEN AGCEN etc Description LCD_MAIN_CS LCD chip enable LCD_RES This pin re...

Page 36: ...3 TECHNICAL BRIEF 35 Figure 3 23 System interconnection of AD6522 external interfaces ...

Page 37: ...gital filters for RF channel selection Auxiliary section This section contains two auxiliary DACs AFC DAC IDAC for system control AFC automatic frequency control of master clock oscilator IDAC gernerate analog signal for battery charging AUX ADC 6 channel 10 bits AFC DAC 13 bits IDAC 10 bits Voiceband section Receive audio signal from MIC Send audio signal to Receiver It interconnect with external...

Page 38: ... SERIAL PORT SAMPLE RATE CONV SAMPLE RATE CONV FILTER FILTER ITXP ITXN QTXP QTXN RAMPDAC IRXP IRXN QRXP QRXN AFCDAC IDACOUT IDACREF AUXADC1 AUXADC2 AUXADC3 AUXADC4 REFOUT REFCAP VOUTNORP VOUTNORN VOUTAUXP VOUTAUXN BUZZER VINNORP VINNORN VINAUXN VINAUXP VSDI VSDO VSFS ASDI ASDO ASFS BSDI BSIFS TXON ATSM RXON BSDO BSOFS ARSM MCLK MCLKEN RESET TDI TDO TMS TCK BASEBAND TRANSMIT SECTION BASEBAND RECEIV...

Page 39: ...escription VSIM 2 86 V is provided to SIM card VCORE 2 45 V is provided to the AD6522 AD6521 s digital core VRTC 2 45 V is provided to the RTC and Backup Battery VAN 2 45 V is provided to the AD6521 I O and used as microphone bias VTCXO 2 715 V is provided to VCTCXO VMEM 2 80 V is provided to Flash ...

Page 40: ...RGE MODE 4 if VBAT 4 2V end of charge then EOC AD3408Output is HIGH if VBAT UVLO then charging in Low Current Charge Mode until VBAT UVLO Under voltage lock out The Status of charging is displayed in the LCD by connecting MVBAT in AD3408 and AD6521 Pins used for charging CHG_DET Interrupt to AD6522 when charger is plugged CHG_EN Control signal from AD6522 to charge Li battery EOC Interrupt to AD65...

Page 41: ...Flash Figure 3 26 3 11 Display and Interface The phones have one LCD There are the control output LCD_MAIN_CS which is derived from AD6522 this acts as the chip select enable for the LCD AD6522 uses DATA 00 07 pins to send data for displaying graphical text onto the LCD LCD 128 x 64 dots 1 hard icon BLUE color LED backlight X 2 X 2 ...

Page 42: ... s witch KB310 which is connected independently Functions the row and column lines of the keypad are connected to ports of AD6522 The columns are outputs while the rows are inputs and have pull up resistors built in When a key is pressed the correspon ding row and column are connected together causing the row input to go low and generate an interrupt The columns rows are then scanned by AD6522 to ...

Page 43: ...y 2V45_VAN is output from ADP3408 and is a bias voltage for both the VINNOR through R101 and VINAUX through R112 lines The VINNOR or VINAUX signal is then A D converted by the Voiceband ADC part of AD6521 The digitized speech is then passed to the DSP section of AD6522 for processing coding interleaving etc Figure 3 28 ...

Page 44: ...lled by the PGA Programmable Gain Amplifier in an AD6521 The audio out VOUTAUXP VOUTAUXN to the hands free kit consists of a pair of differential signals from AD6521 auxiliary outputs which are tracked down the board to carkit connector CN302 at the base of the handset The DC level of the signal is supplied to the VOUTAUX pin Figure 3 29 ...

Page 45: ...e connected to the HEADSET_SPK_P or HFK_SPK_P by the analog switch U305 If you put in the headset jack in the top of the handset VOUTAUXP is connected to the HEADSET_SPK_P And the audio in from the headset jack has also one line VINAUXP AUX_MIC_PI If the headset jack is put in AUX_MIC_PI is input from the MIC of headset jack else AUX_MIC_P is connected to HFK_MIC_P which is input from the Hands fr...

Page 46: ...ECHNICAL BRIEF 45 3 16 Key Back light Illumination In key back light illumination there are 6 White LEDs in Board which are driven by KEY_BACKLIGHT line from AD6522 Figure 3 31 Key Back light Illumination ...

Page 47: ...C319 10uF 33K R317 C313 47p 0 1u C324 R321 0 C317 4 7u C323 1000p SP205 TP301 NC C325 SP204 R316 0 CUS02 D301 V306 VARISTER LG H 4 7u C322 NC C326 VBAT R322 3 3K 0 1u C318 2 2u C320 C321 0 1u 0 01u C315 R315 82K BYPASS 5 4 GND1 GND2 7 6 VEN 2 VIN VOUT 1 VOUT_SE 3 LP3981ILD 3 3 U303 47p C314 2V8_VMEM VARISTER LG H V305 C312 1 2 390p J302 6 17 SPOUT1 18 SPOUT2 15 SPVDD SPVSS 16 7 VDD 9 VREF VSS 8 29...

Page 48: ...e synthesizers to allow simultaneous generation of up to thirty two FM tones and eight Waveform table tones Since FM synthesizer is able to present countless tones by specifying parameters with only several tens of bytes memory capacity and communication band can be saved and thus the device exhibits the features in operating environment of mobile phones such as allowing distribution of arbitrary ...

Page 49: ...G 4 1 RF Components RF Components Reference Description Reference Description U441 RF Main Chipset FL406 Dual SAW Filter CN303 Mobile S W X401 VCTCXO FL405 Ant S W U414 LDO U416 PAM U413 Inverter IC CN303 FL405 U416 FL406 U441 U414 X401 U413 ...

Page 50: ... 49 4 TROUBLE SHOOTING 4 2 Rx Trouble Now See next Page to see How to check each parts RX Check Area ...

Page 51: ...4 TROUBLE SHOOTING 50 4 2 1 Checking Regulator Circuit U414 1 U414 6 ...

Page 52: ...4 TROUBLE SHOOTING 51 4 2 2 Checking VCTCXO Circuit X401 4 X401 3 Graph 4 1 VCTCXO 13MHz Graph 4 2 VCTCXO 2 7V ...

Page 53: ...4 2 3 Checking Control Signal 4 TROUBLE SHOOTING 52 ...

Page 54: ...4 TROUBLE SHOOTING 53 4 2 4 Checking Ant SW Mobile SW ANT SW VC1 VC2 EGSM TX 0 1 DCS TX 1 0 EGSM DCS RX 0 0 CN303 PIN 1 CN303 PIN 2 L420 L421 C448 C444 FL405 Table 4 1 ANT SW Control Logic ...

Page 55: ...GSMSEL TXPA Low VC2 Low Low High Low Graph 4 4 ANT SW Control GSM DCS RX Mode Graph 4 5 Control Signal for GSM RX Mode Graph 4 6 Control Signal for DCS Rx Mode ANT SW GSMSEL DCSSEL TXPA EGSM TX 1 0 1 DCS TX 0 1 1 EGSM RX 1 0 0 DCS RX 0 1 0 ...

Page 56: ...4 TROUBLE SHOOTING 55 4 2 5 Checking Saw Filter Circuit FL406 3 FL406 5 FL406 7 FL406 1 ...

Page 57: ...4 TROUBLE SHOOTING 56 4 2 6 Checking RX IQ RXIN RXIP RXQN RXQP Graph 4 7 RX IQ Signal Graph 4 8 RX I Signal Extended ...

Page 58: ...4 TROUBLE SHOOTING 57 4 3 Tx Trouble ...

Page 59: ...4 3 1 Checking Regulator Circuit If you already Check this point while checking RX part You can Skip this Test 58 4 TROUBLE SHOOTING U414 1 U414 2 U414 6 ...

Page 60: ... 59 4 TROUBLE SHOOTING 4 3 2 Checking VCTCXO Circuit If you already Check this point while checking RX part You can Skip this Test Graph 4 9 VCTCXO 13MHz Graph 4 10 VCTCXO 2 7V X401 4 X401 3 ...

Page 61: ... 60 4 TROUBLE SHOOTING 4 3 3 Checking Control Signal Graph 4 11 RF Control Signal Graph 4 12 TXEN TXRAMP TXPA TP 409 LE TP404 RXEN TXEN TP402 TXRAMP R401 TXPA R404 TP407 Data TP408 Clock ...

Page 62: ... 61 4 TROUBLE SHOOTING 4 3 4 Checking TX IQ Graph 4 13 TX IQ Signal ...

Page 63: ... 62 4 TROUBLE SHOOTING 4 3 5 Checking RF TX Level L419 L409 L408 L417 U441 U416 R414 R405 R404 R403 R401 R406 ...

Page 64: ... 63 4 TROUBLE SHOOTING 4 3 6 Checking Ant SW Mobile SW CN303 2 CN303 1 C448 C444 FL405 3 FL405 5 FL405 Table 4 2 ANT SW Control Logic ...

Page 65: ...Graph 4 15 ANT SW Control GSM TX Mode Graph 4 16 Control signal for DCS TX Mode Table 4 3 ANT SW Control Logic Graph 4 17 Control signal for GSM TX Mode VC1 TXEN DCSSEL GSMSEL TXPA VC2 Low Low High VC1 VC2 Low High High High TXEN DCSSEL GSMSEL TXPA Low High High ...

Page 66: ...4 3 7 Receiver and Transmitter RF Level 65 4 TROUBLE SHOOTING ...

Page 67: ... 66 4 TROUBLE SHOOTING 4 3 8 Receiver RF Level Figure 4 1 Test Points of Rx Level ...

Page 68: ... 67 4 TROUBLE SHOOTING 4 3 9 Transmitter RF Level Figure 4 2 Test Points of Tx Level ...

Page 69: ...UBLE SHOOTING 68 4 3 10 Test Points for RF Components Figure 4 3 Test Points for RF components VC2 U448 VC1 U444 RF 2 85V TXQN TXIN TXQP TXIP RXIN RXQN RXIP RXQP 2V7_VCTCXO 13 MHz Clock TXPA R404 TXRAMP R401 ...

Page 70: ...4 TROUBLE SHOOTING 69 4 3 11 Test Points for RF Components Figure 4 4 Test Points for RF components Keypad Side Lower TP407 PLL_Data TP408 Clock TP404 PLL_LE TP404 RXEN ...

Page 71: ...4 4 Power On Trouble 70 4 TROUBLE SHOOTING SETTING Connect PIF and set remote switch off at PIF ...

Page 72: ...Check POWER ON KEY signal input These powers should be necessary to power on ThissignalshouldgoHIGHwhenthepower on procedureiscompleted Pin 25 2V7_VTCXO PMIC U101 Pin 22 2V45_VCORE Pin 21 2V8_VMEM Pin 6 2V45_VRTC Pin 2 POWERKEY Pin 1 RPWRON ...

Page 73: ...4 TROUBLE SHOOTING 72 4 5 Charging Trouble SETTING Connect the battery and the charging adaptor TA to the phone ...

Page 74: ...4 TROUBLE SHOOTING 73 Test Q102 D101 Check The charging currentwill flowintothis direction R106 Q102 D101 ...

Page 75: ...4 TROUBLE SHOOTING 74 4 6 LCD Trouble ...

Page 76: ...4 TROUBLE SHOOTING 75 Test CN304 Check A Check the connection between LCD Main board B Check the soldering of LCD Main board C Replace LCD module CN304 ...

Page 77: ...4 TROUBLE SHOOTING 76 4 7 Receiver Trouble SETTING After Initialize Agilent 8960 Test in EGSM DCS Mode ...

Page 78: ...4 TROUBLE SHOOTING 77 The Receiver part Circuit Diagram FL301 V307 ...

Page 79: ...4 TROUBLE SHOOTING 78 4 8 Speaker Trouble SETTING Connect PIF to the phone and Power on Enter The engineering mode and set Melody on at Buzzer of BB test menu ...

Page 80: ...4 TROUBLE SHOOTING 79 Test Speaker Check J302 U303 melody IC U203 ...

Page 81: ...r for analog part of the melody IC Circuit diagram These4componentsmakeuptheanalog amplifiedstageofmelody C312 C315 R315 R317 ThePowerfordigitalpartofThe melodyIC Thevoltageis2 8V Melody IC part Circuit diagram The Power for analog part of the melody IC The voltage is 3 3V ...

Page 82: ...4 TROUBLE SHOOTING 81 4 9 Mic Trouble SETTING After Initialize Agilent 8960 Test in EGSM DCS Mode ...

Page 83: ... C114 MIC101 104 L101 L102 MIC activating signal Mic is activated when this signal goes to high The voltage at this point goes to almost 0V when the mic is activated The signal flow of the microphone to U103 R105 R107 C120 C124 ...

Page 84: ...4 TROUBLE SHOOTING 83 C114 R104 R101 L101 L102 C124 R107 R105 C120 Q101 ...

Page 85: ...E SHOOTING 84 4 10 Vibrator Trouble SETTING After Initialize Agilent 8960 Test in EGSM DCS Mode Connect PIF to the phone and Power on Enter The engineering mode and set Vibrator on at Vibration of BB test menu ...

Page 86: ... SHOOTING 85 R222 Q203 D302 CN201 When the vibrator works the signal at this point goes to 2 8V When the vibrator works the signal at this point goes to 0V When the vibrator works the current flow this direction ...

Page 87: ...4 TROUBLE SHOOTING 86 4 11 Backlight LED Trouble SETTING Connect PIF to the phone and power on Enter engineering mode and set Backlight on in at BB test Backlight menu ...

Page 88: ...4 TROUBLE SHOOTING 87 Test D302 D313 Diode Q201 Check A Check the diode LD309 LD313 B Check the current through Q201 Q201 R213 R212 ...

Page 89: ...4 TROUBLE SHOOTING 88 4 12 SIM Detect Trouble SETTING Insert the SIM into J101 Connect PIF to the phone and power on ...

Page 90: ...4 TROUBLE SHOOTING 89 Test SIM Connector Check ...

Page 91: ...4 TROUBLE SHOOTING 90 4 13 Earphone Trouble SETTING After Initialize Agilent 8960 Test in EGSM DCS Mode ...

Page 92: ...4 TROUBLE SHOOTING 91 ...

Page 93: ...4 TROUBLE SHOOTING 92 U306 U305 U308 ...

Page 94: ...4 TROUBLE SHOOTING 93 C145 J301 R334 R307 C170 ...

Page 95: ...nce voltage The signal flow when the ear mic is activated U305 U308 select the path of audio signal for the ear mic or the HFK To U103 AD6521 Mic bias and path for the ear mic Refer to the page 1 of the complete circuit diagram for detail Ear mic detection part Refer to the page 2 of the complete circuit diagram for detail The circuit diagram of the ear mic jack Refer to the page 2 of the complete...

Page 96: ...4 TROUBLE SHOOTING 95 4 14 HFK Trouble SETTING After initializing GSM test equipment Connect PIF to the phone and power on ...

Page 97: ...4 TROUBLE SHOOTING 96 ...

Page 98: ...4 TROUBLE SHOOTING 97 RA201 CN302 U308 U305 RA201 CN302 U306 ...

Page 99: ...Disassembly 1 Remove the battery as shown below Figure 5 1 Removing the Battery 2 Open the cap earphonejack first and push the hook Then hold and twist the Front cover Figure 5 2 Removing the Cover front 98 5 DISASSEMBLY AND ASSEMBLY INSTRUCTION ...

Page 100: ...CTION 99 3 Carefully remove the screws then lift up the both end side of the Cover guide as shown below Figure 5 3 Disassembly of the Cover guide 4 Detach the rest components as shown below Figure 5 4 Disassembly of the rest components ...

Page 101: ...EMBLY AND ASSEMBLY INSTRUCTION 100 5 Detach the Speaker as shown below to unlock PCB Figure 5 5 Removing PCB Antenna 6 Use a tweezers to remove the Battery locker Figure 5 6 Removing the Battery locker 3 1 1 2 ...

Page 102: ...refully insert the Speaker into PCB as shown below Black line of Speaker must be above Figure 5 7 Assembly of PCB Antenna 8 Attach the Speaker and Receiver properly then assemble the rest components Figure 5 8 Assembly of the Speaker Receiver and rest components ...

Page 103: ...5 DISASSEMBLY AND ASSEMBLY INSTRUCTION 102 9 Assemble the Rear cover PCB and Cover guide Then attach screws Figure 5 9 Assembly of the Rear cover PCB and Cover guide ...

Page 104: ...AND ASSEMBLY INSTRUCTION 103 10 Insert the hooks at the bottom of the Front cover into the Rear cover Then assemble the Front cover and Rear cover as shown below Firure 5 10 Assembly of the Front cover and Rear cover ...

Page 105: ...u want to download Don t check OWCD AND VERIFY in flash loader window Push start button in flash loader window Condition 1 Disconnect TA to the Datakit and phone have a battery a VBAT 3 2V Don t download to the phone b 3 2V VBAT 3 4 V First Connect Datakit to the phone Second Push the power on button until finish download c VBAT 3 4V First Connect Datakit to the phone Second Push the power on butt...

Page 106: ...ve a battery a VBAT 3 2V Don t download to the phone b VBAT 3 2 V Connect Datakit to the phone 3 Download method when battery under 3 2 voltage First Remove battery in the phone Second Connect TA to the Datakit Third Connect phone to the Datakit Figure 6 2 Download Setup 2 ...

Page 107: ... 6 3 Equipment Setup Equipment for Calibration Type Model 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 ...

Page 108: ... 6 3 Jig DIP Switch Power Supply usually 4 0V DC Adaptor 9 5V 500mA Switch Number Name Description Switch 1 RPWRON In ON state phone is awaked Switch 2 HF_DETECT Turn on for AUDIO TEST Switch 3 Power Supply Power is provided for phone from Power Supply Switch 4 D C power Power is provided for phone from DC adaptor ...

Page 109: ...is used 1st ON state D Procedure 1 Connect as Fig 6 3 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 then AUTOCAL application window will be appeared Switch Number Name Description Switch 1 RPWRON In ON state phone is awaked Switch 2 HF_DETECT Turn on ...

Page 110: ...7 BLOCK DIAGRAM Figure 7 1 block diagram 109 7 BLOCK DIAGRAM ...

Page 111: ...NOTE 110 ...

Page 112: ...9 NC C133 47n 0 1u C151 TP116 10K R135 TP106 10K R120 82K R125 C135 10p 47n C149 39p C127 R140 100K C120 0 1u C109 47n TP119 0 1u R123 10M C146 20K R134 R128 100K C145 39p C123 39p 2 2u S_CS1 D8 S_CS2 S_LB F3 S_OE F5 S_UB F4 D9 S_VCC1 D3 S_VSS1 S_WE B8 E4 VPP C138 A10 A9 F_VSS1 H8 F_VSS2 F_WE C3 E3 F_WP H12 NC1 A1 NC10 A2 NC11 H11 NC2 NC3 H10 NC4 H3 NC5 H2 C4 NC6 H1 NC7 NC8 A12 NC9 A11 G10 D7 DQ13...

Page 113: ... R240 W3000 LCD BACKLIGHT LCD1 54 LD1 LD2 55 50 VBAT1 VBAT2 51 52 SP242 R218 10 C210 100K R203 0 1u VBAT KB324 LD309 R207 47 R209 47 C226 100K R224 27p 10 R219 1 2 CN201 1 2 R220 10K D302 1SS302 3 R233 1K KB302 VBAT 2V8_VMEM SP209 SP206 LD312 LD310 SP243 SP244 SP214 27p C244 R205 47 27p C221 SP217 R212 1 5K SP229 KB318 1K R236 1K R235 R234 1K Q203 2SC5585 2 3 1 NC R250 SP215 27p C220 R238 1K SP231...

Page 114: ... J303 VBAT U304 R301 1M R322 3 3K R307 10M 5 0 1u 47p C318 C351 C309 0 1u 3 4 5 VARISTER LG H V304 KJA PH 3 0028 J301 1 2 2u C320 2V45_VCORE 5 3 GND IN 1 4 NC NO 6 VCC 2 C321 0 1u GND IN 1 4 NC NO 6 VCC 2 MAX4624EUT T U308 COM MAX4624EUT T U306 COM 5 3 C329 0 01u 1K R340 C350 0 1u 0 01u C315 R315 82K BYPASS 5 4 GND1 GND2 7 6 VEN 2 VIN VOUT 1 VOUT_SE 3 0 1u C333 2V8_VMEM LP3981ILD 3 3 U303 39p C302...

Page 115: ...44 LDMUX LE 47 LNADCSIN 13 LNAGSMIN 11 LNAPCSIN 15 54 LON LOP 53 LPFADJ 31 NC1 63 62 CX74017 U441 46 CLK 28 CapIN 27 CapIP 30 CapQN CapQP 29 DATA 45 14 FEENA 18 FILTN FILTP 12p C419 0 1u C412 22p C429 C441 470p 39p C402 220 R409 51 R412 10 R417 C451 0 5p RF2 85V 0 1u C434 C456 1000p C421 R422 1K 47p C411 0 1u 0 R403 C440 12p 10uF C459 0 R430 2012 C406 IN 2 OUT 4 VCC 5 RF2 85V 1000p U413 SN74AHC1GU...

Page 116: ... 115 9 PCB LAYOUT 9 PCB LAYOUT ...

Page 117: ... 116 9 PCB LAYOUT ...

Page 118: ...alue by up and down key B Backlight 1 2 This menu is to test the LCD Backlight and Keypad Backlight Backlight On 1 2 1 LCD Backlight and Keypad Backlight light on at the same time Backlight Off 1 2 2 LCD Backlight and Keypad Backlight light off at the same time Backlight value 1 2 3 This controls brightness of Backlight When entering into the menu the present backlight value in the phone is displa...

Page 119: ...Audio 1 7 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 VbControl1 1 7 1 VbControl1 bit Register Value Setting VbControl2 1 7 2 VbControl2 bit Register Value Setting VbControl3 1 7 3 VbControl3 bit Register Value Setting VbControl4 1 7 4 VbControl4 bit R...

Page 120: ...y Pad are tested in order for a certain time B Backlight 3 2 LCD Backlight and LED Backlight are on for about 1 5 seconds at the same time then off C Buzzer 3 3 This menu is to test the volume of Melody It rings in the following sequence Volume1 Volmue2 Volume3 Volume0 mute Volume4 Volume5 D Vibrator 3 4 Vibrator is on for about 1 5 seconds E LCD 3 5 Main LCD screen resolution tests horizontally a...

Page 121: ...6 Fact Reset MENU 6 This Factory Reset menu is to format data block in the flash memory and this procedure set up the default value in data block 10 7 S W version MENU 7 This displays software version stored in the phone Attention Fact Reset i e Factory Reset should be only used during the Manufacturing process Servicemen should NOT progress this menu otherwise some of valuable data such as Settin...

Page 122: ... Port select a correct COM 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 i...

Page 123: ...11 3 Means of Test a Select a COM port b Set the values in Tx or Rx c After setting them all above press Start button of Signal 11 STAND ALONE TEST 122 ...

Page 124: ...indows98 ME AutoCal exe GSM phone Agilent 8960 or other equipment 12 3 Menu and settings Edit Ramp Show reference power ramp window Reference ramp is used in APC procedure You can open or save reference ramp data and edit it on notepad Figure 12 1 Reference ramp window Edit Make bin write Make binary file from measured calibration data and write to the phone The name of binaryfile is cal bin by de...

Page 125: ...ange port number baud rate etc Connection Connect to Ag8960 Connect to Agilent 8960 Connection Disconnect Ag8960 Disconnect Agilent 8960 Option Settings Gpib state Show current primary Gpib state Option Settings MPL Set max Tx power level used in APC procedure Option Settings CL Set cable loss value Option Settings Bin file Set default binary file name Figure 12 2 Buttons and status bar 12 AUTO CA...

Page 126: ...Table 12 7 Setting 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 phone C Set correct port and baud rate D Press Connect to phone button so that the state change to SETUP E Set ba...

Page 127: ... EXPLODED VIEW REPLACEMENT PART LIST 13 1 Exploded View 13 EXPLODED VIEW REPLACEMENT PART LIST 126 M20 M21 M25 M24 M22 M26 M23 M27 M28 M17 M18 M15 M16 M8 M6 M6 M7 M11 M9 M4 M5 M10 M12 M14 M3 M2 M1 M13 M19 ...

Page 128: ...13 4 7 Receiver Y M13 SUMY00 MICROPHONE SUMY0004601 1 ASSY 40 dB 6 1 5 W3000 MIC Y M14 ABGA00 BUTTON ASSY DIAL ABGA0000601 1 Y M15 ADCA00 DOME ASSY METAL ADCA0007801 1 Y M16 SVLM00 LCD MODULE SVLM0003801 1 128 64 34 8 30 55 4 4 t D IC Y S6B0723TB 01 SSE LED B L BLUE M17 SAFY00 PCB ASSY MAIN SAFY0058601 1 W3000 WAP Y M18 SJMY00 VIBRATOR MOTOR SJMY0003602 1 3 V 0 08 A 10 3 4 W3000 VIBRATOR Y M19 SBC...

Page 129: ...NDSTRAP MHBY0001101 1 Neck Strap 400mm CDMA common use Y 2 SGDY00 DATA CABLE SGDY0003003 1 LG 510W G510 CABLE W O POWER BULK Y 2 SGEY00 EAR PHONE EAR MIKE SET SGEY0002901 1 G7000 G5200 Common use 3P EAR MIC Y 2 SSAD00 ADAPTOR AC DC SSAD0007803 1 100 240V 50 Hz 5 2 V 850 mA GOST Y DATA CABLE EAR PHONE EAR MIKE SET HANDSTRAP ADAPTOR AC DC ...

Page 130: ...ME ASSY METAL ADCA0007801 1 Please refer to Exploded View Y M15 3 GTZZ00 SCREW TAP TITE GTZZ0000603 2 Please refer to Exploded View Y M6 3 GTZZ01 SCREW TAP TITE GTZZ0000604 4 Please refer to Exploded View Y M7 3 MCCF00 CAP MOBILE SWITCH MCCF0006501 1 Please refer to Exploded View Y M23 3 MLAA00 LABEL APPROVAL MLAA0019501 1 27 0x11 0 N 3 MLAK00 LABEL MODEL MLAK0006901 1 N 3 MTAB00 TAPE PROTECTION M...

Page 131: ...C CHIP ECCH0000163 1 47 nF 10V K X5R HD 1005 R TP Y 5 C132 CAP CERAMIC CHIP ECCH0000163 1 47 nF 10V K X5R HD 1005 R TP Y 5 C133 CAP CERAMIC CHIP ECCH0000163 1 47 nF 10V K X5R HD 1005 R TP Y 5 C134 CAP CERAMIC CHIP ECCH0000163 1 47 nF 10V K X5R HD 1005 R TP Y 5 C135 CAP CERAMIC CHIP ECCH0000163 1 47 nF 10V K X5R HD 1005 R TP Y 5 C136 CAP CERAMIC CHIP ECCH0000163 1 47 nF 10V K X5R HD 1005 R TP Y 5 C...

Page 132: ... CHIP ECCH0000117 1 27 pF 50V J NP0 TC 1005 R TP Y 5 C237 CAP CERAMIC CHIP ECCH0000117 1 27 pF 50V J NP0 TC 1005 R TP Y 5 C238 CAP CERAMIC CHIP ECCH0000117 1 27 pF 50V J NP0 TC 1005 R TP Y 5 C239 CAP CERAMIC CHIP ECCH0000117 1 27 pF 50V J NP0 TC 1005 R TP Y 5 C240 CAP CERAMIC CHIP ECCH0000117 1 27 pF 50V J NP0 TC 1005 R TP Y 5 C241 CAP CERAMIC CHIP ECCH0000117 1 27 pF 50V J NP0 TC 1005 R TP Y 5 C2...

Page 133: ...IC CHIP ECCH0000122 1 47 pF 50V J NP0 TC 1005 R TP Y 5 C421 CAP CERAMIC CHIP ECCH0000122 1 47 pF 50V J NP0 TC 1005 R TP Y 5 C422 CAP CERAMIC CHIP ECCH0003401 1 10 uF 6 3V Z Y5V HD 2012 R TP Y 5 C423 CAP CERAMIC CHIP ECCH0000183 1 1 8 pF 50V C NP0 TC 1005 R TP Y 5 C424 CAP CERAMIC CHIP ECCH0000133 1 220 pF 50V K X7R HD 1005 R TP Y 5 C425 CAP CERAMIC CHIP ECCH0000189 1 680 pF 50V J X7R HD 1005 R TP ...

Page 134: ...D ENBY0001802 1 2 PIN 1 27 mm STRAIGHT SILVER Y 5 L101 INDUCTOR CHIP ELCH0005009 1 100 nH J 1005 R TP Y 5 L102 INDUCTOR CHIP ELCH0005009 1 100 nH J 1005 R TP Y 5 L310 INDUCTOR CHIP ELCH0005009 1 100 nH J 1005 R TP Y 5 L406 INDUCTOR CHIP ELCH0001405 1 3 3 nH S 1005 R TP Y 5 L407 INDUCTOR CHIP ELCH0001001 1 10 nH J 1005 R TP Y 5 L408 INDUCTOR CHIP ELCH0001001 1 10 nH J 1005 R TP Y 5 L409 INDUCTOR CH...

Page 135: ...6W J 1005 R TP Y 5 R137 RES CHIP ERHY0000280 1 100K ohm 1 16W J 1005 R TP Y 5 R139 RES CHIP ERHY0000280 1 100K ohm 1 16W J 1005 R TP Y 5 R140 RES CHIP ERHY0000280 1 100K ohm 1 16W J 1005 R TP Y 5 R150 RES CHIP ERHY0000273 1 47K ohm 1 16W J 1005 R TP Y 5 R201 RES CHIP ERHY0000280 1 100K ohm 1 16W J 1005 R TP Y 5 R202 RES CHIP ERHY0000280 1 100K ohm 1 16W J 1005 R TP Y 5 R203 RES CHIP ERHY0000280 1 ...

Page 136: ... R TP Y 5 R333 RES CHIP ERHY0000261 1 10K ohm 1 16W J 1005 R TP Y 5 R334 RES CHIP ERHY0000202 1 4 7 ohm 1 16W J 1005 R TP Y 5 R335 RES CHIP ERHY0000261 1 10K ohm 1 16W J 1005 R TP Y 5 R336 RES CHIP ERHY0000261 1 10K ohm 1 16W J 1005 R TP Y 5 R340 RES CHIP ERHY0000241 1 1K ohm 1 16W J 1005 R TP Y 5 R401 RES CHIP ERHY0000263 1 15K ohm 1 16W J 1005 R TP Y 5 R402 RES CHIP ERHY0000203 1 10 ohm 1 16W J ...

Page 137: ...01 1 SOT23 6 6 PIN R TP SPDT ANALOG SWITCH Y 5 U306 IC EUSY0077401 1 SOT23 6 6 PIN R TP SPDT ANALOG SWITCH Y 5 U308 IC EUSY0077401 1 SOT23 6 6 PIN R TP SPDT ANALOG SWITCH Y 5 U413 IC EUSY0077201 1 SOT DCK 5 PIN R TP Y 5 U414 IC EUSY0076701 1 SOT 23 6 6 PIN R TP Y 5 U416 PAM SMPY0003901 1 35 dBm 55 80 mA 50 dBc 25 dB 10 10 1 8 SMD Y 5 U441 IC EUSY0129801 1 Land Grid Array LGA 64 PIN R TP 9 x 9 mm Y...

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