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VS600 Service Manual

VOXTEL Technical Documentation 57

vel 3 & 4 Troubleshooting-Baseband

7.3.1

VS600 employs MTK

ARM7EJ-S 32bit RSIC GSM/GPRS Baseband chipset as

platform. The key components used in baseband subsystem is listed below:

MTK ARM7EJ-S 32bit RSIC GSM/GPRS Baseband chipset including MT6219 and

MT6305.

Microprocessor: MT6219 includes ABB (analog baseband) and DBB (digital

baseband). It supports EGSM/DCS/PCS.

Power management IC: MT6305

Memory IC

MCP (Multi Chip Package): Spansion S71PL129JB0 128Mb+32Mb pSRAM

NAND Flash: Samsung 512Mb(64MB)

eal Time Clock)

Digital Camera Module

CMOS: Asia Optical BASCH0300 1.3Mega Pixels

LCD Module

TFT LCD: Jemitek J180Q3-01 176 x 220

7.3 Le

Baseband Subsystem

RTC (R

Coin Battery: Seiko XH414H

Voltage Regulator

pMOSFET: Vishay Si7705DN

Summary of Contents for VS600

Page 1: ...VS600 Service Manual VOXTEL Technical Documentation 1 Model VS600 Service Level Level 1 Level 4 ...

Page 2: ...TIONS 21 3 5 CE MARKING 21 3 6 RELATED PERFORMANCE 22 4 CIRCUIT SCHEMATICS 23 4 1 MEMORY CIRCUIT 23 4 2 SIM CARD CIRCUIT 24 4 3 SPEAKER RECEIVER 2 IN 1 CIRCUIT 24 4 4 MICROPHONE 25 4 5 LCM BACKLIGHT AND LED CIRCUIT 25 4 6 VIBRATOR CIRCUIT 26 4 7 POWER MANAGEMENT CHARGING CIRCUIT 26 4 8 LCM FPC LCM BACKLIGHT 27 4 9 BOARD TO BOARD CONNECTOR 28 4 10 HEADSET 29 4 11 BLUETOOTH CHIP ANTENNA 29 4 12 HALL...

Page 3: ...EBAND 57 7 3 1 BASEBAND SUBSYSTEM 57 7 3 2 KEY COMPONENTS PLACEMENT 58 MAIN BOARD ASSEMBLY BOTTOM 58 MAIN BOARD ASSEMBLY TOP 59 UPPER BOARD ASSEMBLY BOTTOM 60 UPPER BOARD ASSEMBLY TOP 60 BLOCK DIAGRAM 61 7 3 3 BASEBAND SUBSYSTEM CIRCUIT SCHEMATICS 61 7 4 LEVEL 3 4 TROUBLESHOOTING RF 62 7 4 1 RF SUBSYSTEM 62 7 4 2 KEY COMPONENTS PLACEMENT 63 FRONT END TRANSCEIVER 63 BLUETOOTH 64 BLOCK DIAGRAM 65 7 ...

Page 4: ...atures its acoustic performance 64 polyphonic and MP3 ring tones 1 2 Specifications Basic Features Dimension Excluding Antenna 90x45x24 Weight Flex Volume 85 g Volume 82 cc Antenna Embedded Talk Time Stand by time 2 5 5 hrs 140 200 hrs Charging time Switching type finish charging in 2 5 hours Main Display Type Resolution Color Depth TFT 1 8 176 220 65K Color Main Backlight Color Type White light K...

Page 5: ...ss Mass storage CDCACM USB Charging Yes Extended Memory Mini SD NAND Flash Speaker 2 in 1 Mechanical Features Appearance Semi Auto Slider Navigation Key 5 ways combined Numeric Key 12 Pads Side Key Yes Strap Hole Yes System Service Support Support Band 900 1800 1900 Speech Codec HR FR EFR CSD Fax Up to 14 4K GPRS Multi slot Class Class 10 GPRS Terminal Class Class B GPRS Coding Scheme CS1 CS2 CS3 ...

Page 6: ...age area of a cell on a given channel is limited to a small area relative to the total system coverage area a channel may be reused in another cell outside the coverage area of the first By this means several subscribers may operate within the same geographic area without interference with each other on a single channel 2 2 GSM Global System for Mobile communications Unlike former cellular systems...

Page 7: ...resents the total coverage area of a hypothetical system This area is divided into several cells each containing a cell site base station operating on a given set of channels which interfaces radiotelephone subscribers to the telephone switching system The radiotelephones themselves are capable of operation on any channel in the system allowing them to operate in any cell Due to the low power requ...

Page 8: ...ocks The user data blocks are sent as information bursts in the allocated time slot of each TDMA frame The data blocks are modulated onto the carrier using Gaussian Minimum Shift Keying GMSK a very efficient method of phase modulation Each time an information burst is transmitted it may be transmitted on a different frequency This process is known as frequency hopping Frequency hopping reduces the...

Page 9: ...be placed or received If this happens during a conversation the call will be lost There may also be small areas within a particular service area where communications may be lost The radiotelephone s identity information is held by its local GSM system in its Home Location Register HLR and Visitor Location Register VLR The VLR contains identity information on all local active radiotelephones Should...

Page 10: ...er amplifier SKY77328 SKYWORKS which is capable of supporting GPRS class12 and quad band application Transceiver IC MT6129 MTK which is GSM850 EGSM DCS PCS quad band design with GPRS class 12 capability Antenna switch C085TK Hitachi metals which is as the duplexer between transmission reception route for EGSM DCS PCS bands RF Clock 26MHz VC TCXO which is the fundamental reference frequency for tra...

Page 11: ...ta encryption algorithm for GSM network operation including A5 1 and A5 2 algorithms Following shows the base band circuit block diagram RF MODULE MT6219 SPEECH AUDI O OUTPUT SPEECH AUDI O INPUT KEYPAD EXTERNAL MEMORY INTERFACE MELODY LCD TCVCXO AFC APC TX I Q RX I Q BPI BSI ALERT ER SIM SUPPLY VOLTAGES JTAG UART IRDA POWER MANAGEMENT CIRCUITRY SERIAL LCD SYSCLK SERIAL LCD MMC SD MS MSPRO USB AUXA...

Page 12: ...176 220 65K TFT 1 3M CMOS Camera ASIA 1 3M Micron CMOS sensor Battery Packing Cell NEC Lithium Ion Packing vendor Tyco Major Features List VS600 Supported Bands 900 1800 1900 MHz Tri band GPRS Class Class 12 Circuit Switch Data CSD up to 9 6 kbps Supported Voice Codec AMR EFR FR HR Main LCD Display 1 8 176 R G B 220 65K TFT Antenna Type Embedded Charger Type Switch Loud speaker hands free Yes Poly...

Page 13: ...es Bluetooth CSR Bluetooth 1 1 USB Connection USB 1 1 Slave UV light Yes PC Tools Download Modem driver Wallpapers Yes Melody Composer Yes ME Address book 250 Caller Photo Display Yes Caller Groups Yes Calendar Note Appointment Yes Alarm Clock Yes Calculator Yes ...

Page 14: ...rdware acceleration 512 KB zero wait state on chip SRAM Multi media subsystem JPEG codec 2D accelerator Wavetable synthesis MPEG 4 H 263 codec Full speed USB 1 1 High throughput hardware re size capable of tailoring image to arbitrary MMC SD MS and MS PRO host controller DSP recorder User interface 6 row x 7 column keypad scanner 3 UARTs with hardware flow control and speed up to 921600 bps 7 chan...

Page 15: ...at 1KHz 1Vrms SPL for Dynamic Speaker 100 3 dB at 0 5W 1KHz SPL for Dynamic Receiver 123dB 3dB at 1 0KHz 100mV with IEC R318 coupler Resonance Frequency Fo 800Hz 160 Hz 1V Rated Input Nom Max for Speaker 0 5 W 0 8W Frequency Range Fo 20 kHz Receiver 300Hz 3 4kHz Dimension 20 14 T4 6 mm Stacked MCP Architecture 128Mbit Flash 64Mbit PSRAM Spansion S71PL129JC0 Stacked Multi Chip Product MCP Flash Mem...

Page 16: ...VS600 Service Manual VOXTEL Technical Documentation 16 Bank structure MCP block diagram ...

Page 17: ...f the art architecture allowing extremely low power consumption and miniature size The following are the product highlights Sensor Array 1 3 optical format SXGA resolution 1280x1024 3 6µm x 3 6µm square pixels Integrated 10 Bit ADC RGB mosaic with micro lens for high sensitivity Programmable frame rate up to 15 fps SXGA and 30 fps QSXGA Back Light The backlight on the module is single light guide ...

Page 18: ...ent Max 80mA Terminal resistance 35 ohm 15 Rated speed 13000 3000 rpm Mechanical noise Less than 50dB Operation temperature 30 C 70 C Storage temperature 40 C 85 C I O connector Mini USB connector Adaptor INPUT CHARACTERISTICS Input Voltage and Frequency The power supply shall meet all specifications when powered from the following Sources Item Minimum Nominal Maximum Voltage 90V 100 240V 264V Fre...

Page 19: ...he supply will operate safely up to 240Vac the SMP must not fail in catastrophic manner i e no fire Flames sparks melting OUTPUT CHARACTERISTICS Output Voltage The power supply shall be regulated DC output of 5 25Vdc 5 the voltage shall be measured at the power supply output connector Output Current Output Current Iout Continuous operation 480mA Temperature Operating 0 to 45 degrees C Non operatin...

Page 20: ...Battery cell NEC Li Ion 700mAh NEC cell PCM Description Specification Unit Condition Cell model NEC ICP043443AL Nominal Capacity 700 mAh Nominal Voltage 3 7 V Charge voltage 4 2 V Final discharge voltage 2 75 V Maximum Charge Current 700 mA 1C Maximum Discharge Current 1400 mA 2C Internal Resistance 145 mΩ Operating Temperature Range 0 45 20 60 Charge Discharge Storage Temperature Range 20 60 With...

Page 21: ... loss Stability margin GSM 11 10 30 7 1 Distortion Sending 3 5 CE marking Safety EN60950 EMC ETS300 342 1 EN55022 EMI ITE Radio Disturbance Characteristic EN61000 4 3 RS Radiate Radio Frequency and Electromagnetic Field Immunity Test EN61000 4 2 ESD Electrostatic Discharge Immunity Test EN61000 4 4 EFT Electrical Fast Transient Burst Immunity Test EN61000 4 6 CS Immunity to Conducted Disturbances ...

Page 22: ... 3 4V Charging mode Maximum Charge Current 500mA Maximum Charge Voltage 5 5V Maximum Charge Time less than 3 Hours Power consumption Talk mode Maximum Current 320mA GSM band PO 32dBm Maximum Current 250mA DCS band PO 29dBm Sleep mode Maximum Current 6mA paging rate 2 Maximum Current 3 5mA paging rate 9 GPRS mode 1 TX slot Maximum Current 320mA GSM band PO 32dBm Maximum Current 250mA DCS band PO 29...

Page 23: ...VS600 Service Manual VOXTEL Technical Documentation 23 4 Circuit Schematics 4 1 Memory Circuit ...

Page 24: ...VS600 Service Manual VOXTEL Technical Documentation 24 4 2 SIM Card Circuit 4 3 Speaker Receiver 2 in 1 circuit ...

Page 25: ...VS600 Service Manual VOXTEL Technical Documentation 25 4 4 Microphone 4 5 LCM Backlight and LED Circuit ...

Page 26: ...VS600 Service Manual VOXTEL Technical Documentation 26 4 6 Vibrator Circuit 4 7 Power Management Charging Circuit ...

Page 27: ...VS600 Service Manual VOXTEL Technical Documentation 27 4 8 LCM FPC LCM Backlight ...

Page 28: ...VS600 Service Manual VOXTEL Technical Documentation 28 4 9 Board to Board Connector ...

Page 29: ...VS600 Service Manual VOXTEL Technical Documentation 29 4 10 Headset 4 11 Bluetooth Chip Antenna ...

Page 30: ...VS600 Service Manual VOXTEL Technical Documentation 30 4 12 Hall Sensor circuit ...

Page 31: ...VS600 Service Manual VOXTEL Technical Documentation 31 4 13 Mini USB Mini SD 4 14 UB MB Keypads ...

Page 32: ...VS600 Service Manual VOXTEL Technical Documentation 32 4 15 MT6219 ...

Page 33: ...VS600 Service Manual VOXTEL Technical Documentation 33 4 16 Antenna Switch ...

Page 34: ...VS600 Service Manual VOXTEL Technical Documentation 34 4 17 Amplifier SKY77328 4 18 MT6129 SAW Filters ...

Page 35: ...VS600 Service Manual VOXTEL Technical Documentation 35 ...

Page 36: ...llation of the driver 2 There will be a directory US 001 USB To Serial Cable V1 1 in the provided CD Please run the installation program Driver Installer exe in the 98 xp directory if your OS is windows 98 xp We don t support other OS now 3 After install the driver of this USB2COM cable The program will ask you to restart the computer 4 After re start the computer and the setup procedure please in...

Page 37: ...and VS600 It s for loading software into VS600 You can download it from Voxtel The installation procedure is simply to put all files under same folder Double click the executive file to activate the tool Then you will see the GUI popped up as followed picture Main Menu Bar Put all files under same folder File Information Logo Progress Bar Status Bar ...

Page 38: ...TEL Technical Documentation 38 5 4 How to Download Software Before you begin using the tool you must set your COM port and Baud Rage first The tool will show the available COM port in the PORT Baud Rate like following figures ...

Page 39: ...he contents of the file including the segment and Please power off VS600 first Then connect the Voxtel download cable to the handset After connecting the PC and device we have to select the correct data files You can download data files from Voxtel Remembe Address Right after that click the Download button to get the data transferring process ready Put all data files in same folder Click Here ...

Page 40: ... Service Manual VOXTEL Technical Documentation 40 After clicking the download button on the GUI you need to activate the downloading process by pressing the END KEY It would take several minutes to complete whole process Current Status Download Completes END KEY ...

Page 41: ...a properly grounded high impedance conductive wrist strap is used while performing these procedures on electronic units NOTE Many of the integrated circuit devices used in this equipment are vulnerable to damage from static char re that adequate static protection is in place when handling shipping and servicing the internal components of this equipment 6 2 Recommended Tools Anti Static Mat Ground ...

Page 42: ... cture shows the major parts of VS600 6 3 Disassembly Procedure wing set of dia disa VS600 The first pi Item Description 1 Case 1 and lens 2 Case 2 and slide hinge 3 Case 3 4 Case 4 and antenna assembly 5 Battery cover screws 6 Main board assembly 7 Upper borad assembly and LCD module 8 Keypad 9 FPC and side key 1 2 3 4 5 7 8 9 6 ...

Page 43: ...ce Manual VOXTEL Technical Documentation 43 Step1 Power off VS600 and put it on a flat workbench Step2 Remove the batter door Take out the battery SIM card and memory card if any Step3 Unscrew all screws on Case 4 ...

Page 44: ...ft Fit the blade into the locking on the side and push outward Next insert the blade into the cleavage and stress along the side counterclockwise When you encounter the locking on the other side push outward to disassemble the Case4 from Case3 se a blade to separate Case3 and Case4 First fa ...

Page 45: ...S600 Service Manual VOXTEL Technical Documentation 45 Step5 Insert the blade to the right side of DSC shielding case and pry it to separate Step6 Pry the main PCBA Be careful with the Board to board FPC ...

Page 46: ...VS600 Service Manual VOXTEL Technical Documentation 46 Step7 ke out the side key and number keypad Ta ...

Page 47: ...nual VOXTEL Technical Documentation 47 Step8 First unscrew the screws fasten on Case3 Next align the Case3 with the alignment line Push Case2 and Case3 to opposite directions next lift Case 3 to separate it from Case 3 ...

Page 48: ...VS600 Service Manual VOXTEL Technical Documentation 48 Step9 Remove screws fasten on Case2 Next use blade to unlock all lockings to separate Case1 and Case2 ...

Page 49: ...VS600 Service Manual VOXTEL Technical Documentation 49 Step10 et Remove the upper PCBA and unscrew all screws fasten on the hinge Remember to take out the magn ...

Page 50: ...VS600 Service Manual VOXTEL Technical Documentation 50 Unleash the board to board and LCM FPC Step11 Step12 Release LCM frame by unhook the snap fixings along the side ...

Page 51: ...VOXTEL Technical Documentation 51 6 4 Assembly Procedure Once the handset is disassembled he repair is carried out the unit must then be reassembled It is carried out in the exact reverse sequence as the disassembly ploded View E and t 6 5 Ex xploded View is listed in appendix ...

Page 52: ...ess the PWR button if handset turns on and stays on disconnect the DC power source and reassemble the handset with a new main board own good FPC flexible printed circuit Main boa assemb assembly If the unit still cannot turn on after reassembled with a new main board try to replace a kn a Antenna defective Check connection between the antenna and the main board assembly If the connection is okay s...

Page 53: ... defec Check connection from the earpiece to the main board assembly If the connector is not fault proceed to b b 2 in 1 loudspeaker defective Temporarily replace the speaker assembly with a known good one Ensure good connection by placing a call and verify the improvement in earpiece audio If fault is cleared reassemble the handset with the good assembly If not proceed to c 6 Received audio from ...

Page 54: ...per board assembly 9 Internal charger not working r n mbly Insert a selection of batteries to and reassemble the ain board Faulty charge circuit on mai board asse verify If the fault is still present replace a known good main board assembly Verify that the fault has been cleared handset with the new m assembly a Headset plug pushed full home not y Ensure the headset plug is fully seated in the jac...

Page 55: ...m test by pressing all keys and buttons acters on the display should disappear ctory mode menu When you press one key After sponding ear it will go bac Echo Loop Headset In echo loop mode it s for testing the performance of microphone and receiver VS600 s loudspeaker is a 2 in 1 speaker After entering echo loop mode please give a puff toward the microphone Check if there is any sound coming out of...

Page 56: ...C is working fine RTC Real Time Clock helps to keep the handset internal clock ticking even it s turned off RTC mode is for testing its function After entering the RTC mode the handset will instantly power off In few seconds the handset will prompt a message Pow Please press left soft key to turn on the handset If it can power on again without rking fine er On problem the RTC is wo ...

Page 57: ...including MT6219 and MT6305 Microprocessor MT6219 includes ABB analog baseband and DBB digital baseband It supports EGSM DCS PCS Power management IC MT6305 Memory IC MCP Multi Chip Package Spansion S71PL129JB0 128Mb 32Mb pSRAM NAND Flash Samsung 512Mb 64MB eal Time Clock Digital Camera Module CMOS Asia Optical BASCH0300 1 3Mega Pixels LCD Module TFT LCD Jemitek J180Q3 01 176 x 220 7 3 Le Baseband ...

Page 58: ...ents Placement Main Board Assembly Bottom Item Description 1 CMOS connector CN603 2 Phone Jack J501 3 SIM card connector J500 4 Mini SD card Connector CN602 5 Mini SD card Connector CN602 6 Mini USB connector CN601 7 Microphone MIC501 1 2 5 S RF ubsystem 3 Blue tooth 4 7 6 ...

Page 59: ...59 Item Description Main Board Assembly Top 1 MCP 128 32 Mb U401 2 NAND Flash 64MB U700 3 MT6219 U400 4 Power Management IC U500 5 RTC X400 6 P MOSFET U501 7 Coin battery BAT510 8 B to B connector CN701 9 White LED D510 D515 1 3 6 5 8 7 2 9 Blue tooth 4 ...

Page 60: ...ical Documentation 60 om oard Assembly Top Item Desc Upper Board Assembly Bott Upper B ription 1 Vibrator connector J803 2 LCD module connector J802 3 B to B connector J801 Item Description 1 2 in 1 loudspeaker connector LSP801 1 1 2 3 ...

Page 61: ...C APC TX I Q RX I Q BPI BSI ALERT ER SIM SUPPLY VOLTAGES JTAG UART IRDA POWER MANAGEMENT CIRCUITRY SERIAL LCD SYSCLK SERIAL LCD MMC SD MS MSPRO USB AUXADC 1 2 3 4 5 6 7 8 9 0 CMOS SENSOR HIFI STEREO OUTPUT FM STEREO RADIO INPUT DEBUGGER PWM NAND FLASH LCD 8 BIT PARALLEL INTERFACE FLASH SRAM PSRAM IMAGE INPUT 7 3 3 Baseband Subsystem Circuit Sch lease refer to Chapter 4 ematics P ...

Page 62: ...uad band application Antenna switch C085TK Hitachi metals which is as the duplexer between transmission reception route for EGSM DCS PCS bands Saw filter FUJITSU B28E 942 5MHZ GSM900 FUJITSU B2BG 1842 5MHZ GSM1800 FUJITSU B2BE 1960MHZ GSM1900 RF clock reference 26MHz VC TCXO which is the fundamental reference frequency for transceiver PLL synthesizer and the fundamental frequency of base band chip...

Page 63: ... Documentation 63 t r Description 7 4 2 Key Components Placement Fron end Transceive Item 1 SAW filter U103 U105 2 Power Amplifier U101 3 Transceiver U201 4 VC TCXO U202 5 Car kit connector J102 6 Antenna Switch U102 5 6 2 1 3 4 Blue tooth ...

Page 64: ...VS600 Service Manual VOXTEL Technical Documentation 64 Item Description Bluetooth 1 CSR BT IC U301 2 XTAL Y301 3 BALUN filter U304 4 Car kit connector U302 5 Chip antenna U303 3 5 4 2 1 ...

Page 65: ...VS600 Service Manual VOXTEL Technical Documentation 65 ram Block Diag 7 4 3 RF Subsystem Circuit Schematics Please refer to Chapter 4 1 GSM GPRS Transceiver 2 Bluetooth ...

Page 66: ...RF signal generator and spectrum analyzer 7 5 1 Receiver Path When the VS600 receives signals from antenna the RF signals will first encounter the antenna switch C085TK Hitachi The antenna switch will route the received signal to corresponding SAW filters FUJITSU B28E B2BE B2BG After filtering the received signal will be feeded into transceiver MT6129 for demodulation 7 5 Level 4 Serv In the follo...

Page 67: ...equency band PCS DCS for 200KHz F RF band EGSM for 200KHz F 2 RF CH VCO CH VCO VC TCXO If VC TCXO is the suspected root cause please check that it s output frequency and Vcc to verify In normal circumstance you will see C244 s voltage is 2 7V and the output frequency of VCTCXO should be26MHz and Vp p is 1V If not recommend replacing U202 C244 2 7V Output 26MHz Oscilloscope ...

Page 68: ...owed Signal Generator un modulated signal EGSM Frequency 950MHz Amplitude 60dBm D requency 1850MHz Amplitude 60dBm PCS Frequency 1950MHz Amplitude 60dBm Spectrum pan 2MHz RBW 100KHz VBW 100KHz DCS Central Freq 1850MHz Span 2MHz RBW 100KHz VBW 100KHz PCS Central Freq 1950MHz Span 2MHz RBW 100KHz VBW 100KHz CS F Analyzer EGSM Central Freq 950MHz S A B C D E F G H I RF test signal input here ...

Page 69: ...Please check replace C134 or C125 Test p Test point D 64dBm 1850MHz C132 Please check replace U102 or Test point E Please check replace U104 or 65dBm 1850MHz L132 DCS Test point F 65dBm 1850MHz Please check replace C136 or C137 Test point G 64dBm 1950MHz C127 Please check replace U102 or Test point H 0MHz Please check replace U105 or L133 65dBm 195 PCS Test point I 950MHz Please check replace C138...

Page 70: ...A an t p r replace MT6129 6129C Checking MT6129C performance requires a signal generator an oscilloscope and a PC with RF c ass the test please re solder o 1 Open META Configure the environment setting 2 Choose CONTINUOUS RX U201 Pin 43 44 45 46 should have 67KHz sinusoidal signal Vp p 2V Select corresponding BAND ARFCN and GAIN 3 ...

Page 71: ... OPLL Optical Phase Locked Loop structure It up converts I Q signals from baseband to RF frequency 7 5 2 T In the transmitter path VS600 is equipped with a transceiver MT6129 a power amplifier SKY77328 and an antenna switch Hitachi 085TK A 26MHz VC TCXO TXC 7P26000123 provides the frequency reference Transmitter Path MT6129C D I Q sign ifferential als VBAT VC TCXO 26MHz ...

Page 72: ...elow Please check Pin 1 3 and 15 first Pin Pin Name Voltage Level Location Signal Type 1 1 5V C222 Burst VCCTXVCO 3 3 8V B231 Continuous VBAT1 4 VCCRF 2 7V C223 Continuous 15 VBAT2 3 7V B231 Continuous 16 VCCRFBUF 2 8V C235 Continuous 21 VCCRFVCO 2V C239 Continuous 24 VCCRFCP 2 8V C249 Continuous 25 VCCSYN 2 8V C249 Continuous 30 VCCVCXO 2 8V C243 Continuous 33 VCXOFRQ 2 8V C235 Continuous 35 VCCM...

Page 73: ... It s a high current consumption and moisture sensitive component Antenna Matching Circuit PA Output PA Input Vramp RX Path Front End RF in Vapc BS PA_EN VBat Name RF inpu 6 0 1 t 0 dBm RF 2 2 V Analog L GSM900 H DCS PCS Enable 2 8V Logic Logic Typ Voltage of Bat 3 8V ri tery Typ Supply D Type esc ption PA enable Vapc GSM RF IN DCS PCS RF IN GSM RF Out DCS PCS RF Out ...

Page 74: ...VS600 Service Manual VOXTEL Technical Documentation 74 085TK is a tri band antenna switch which has 3 RX ports and 2 TX ports VC1 VC2 VC3 ...

Page 75: ...SKY77328 Power Amplifier we need to re calibrate the RF subsystem AutoCal_Meta is used for calibration It requires an Agilent 8690 a Keithly DC source and a PC with AutoCal_Meta You also need a RS232 cable for connection between PC and handset Its user interface is like below 7 5 3 AutoCal Meta Tool ...

Page 76: ... the Bluetooth subsystem we need the following equipments and SW Equipments Spectrum Analyzer Oscilloscope and PC PC Spectrum Analyzer Oscilloscope USB RS232 LPT ports RF Signal Out Analog Digital Signals TX measurement Open BlueCore Handphone CW generator It will activate the Blue IC s TX measurement mode In the Frequency selection please select 26MHz as the hand phone reference clock is 26MHz Th...

Page 77: ...cy trim Change the dec and then click set Close the dow and then proceed to TX measurement to check all test points If the measured value is beyond the expected value change the decimal again and proceed the TX measurement again xpected Value Pin E C311 3V DC C312 L326 3dBm 2441MHz U302 0dBm 2442MHz C343 C3 350mVpp 26MHz 44 lect Crystal f prompt win imal 0 63 2 3 1 ...

Page 78: ...3 04G170014200 Loud Speaker 1 14 18G240180410 LCD Module 1 15 60 VD5DBXXXX XXX Sub PCB Assy 1 16 13VG050APH00 Sliding Module 1 17 08G600006421 Main C Assy 1 FP 18 13VG0500PB30 Side Assy 1 Key 19 13VG0500MB60 Number Key Metal Dome 1 20 13GV050AP900 Antenna Assy 1 21 13GV0500M040 DSC Shilding CAN Top 1 22 04 370007300 Camera Module 1 23 04G160300610 hone 1 Microp 24 13GV0500LB40 Microphone Rubber 1 ...

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