Nokia 3806 Service Manual Download Page 141

Page: 141 / 162

RM-583

RF Description and Troubleshooting

TX DC test points

Figure 6: TX DC Test Points

Test Points Description

Value

（

L205

）

VPH_PWR

VPH_PWR=VBAT: power supply for three PA Modules VPH_PWR=0:
shut up

（

C250

）

PA_R0

PA_R0=High: high gain mode
PA_R0=Low: bypass mode

（

C251

）

PA_ON0

PA_ON0=High: for cell band PA turn on
PA_ON0=Low: off

Table 1: TX DC Test Point

COMPANY CONFIDENTIAL

Issue 1

Page 7-9

Summary of Contents for 3806

Page 2: ...RM 583 Amendment Record Sheet COMPANY CONFIDENTIAL Copyright 2009 Nokia All rights reserved ii Issue 1 Amendment Record Sheet Amendment No Date Inserted by Comments Issue 1 10 2009 Lancy Yang ...

Page 3: ... and improvements to any of the products described in this document without prior notice Under no circumstances shall Nokia be responsible for any loss of data or income or any special incidental consequential or indirect damages howsoever caused The contents of this document are provided as is Except as required by applicable law no warranties of any kind either express or implied including but n...

Page 4: ...OPERATED IN AREAS LIKELY TO CONTAIN POTENTIALLY EXPLOSIVE ATMOSPHERES EG PETROL STATIONS SERVICE STATIONS BLASTING AREAS ETC z OPERATION OF ANY RADIO TRANSMITTING EQUIPMENT INCLUDING CELLULAR TELEPHONES MAY INTERFERE WITH THE FUNCTIONALITY OF INADEQUATELY PROTECTED MEDICAL DEVICES CONSULT A PHYSICIAN OR THE MANUFACTURER OF THE MEDICAL DEVICE IF YOU HAVE ANY QUESTIONS OTHER ELECTRONIC EQUIPMENT MAY...

Page 5: ...ly qualified personnel may install or repair mobile terminal equipment ACCESSORIES AND BATTERIES Use only approved accessories and batteries Do not connect incompatible products CONNECTING TO OTHER DEVICES When connecting to any other device read its user s guide for detailed safety instructions Do not connect incompatible products ...

Page 6: ...tible to ESD Resistors too can be damaged by static electricity discharge All ESD sensitive parts must be packed in metallized protective bags during shipping and handling outside any ESD Protected Area EPA Every repair action involving opening the product or handling the product components must be done under ESD protection ESD protected spare part packages MUST NOT be opened closed out of an ESD ...

Page 7: ...d Do not store the phone in hot areas High temperatures can shorten the life of electronic devices damage batteries and warp or melt certain plastics Do not store the phone in cold areas When it warms up to its normal temperature moisture can form inside which may damage electronic circuit boards Do not drop knock or shake the phone Rough handling can break internal circuit boards Do not use harsh...

Page 8: ...ndeavor has been made to ensure the accuracy of this document some errors may exist If any errors are found by the reader NOKIA MOBILE PHONES Business Group should be notified in writing Please state Title of the Document Issue Number Date of publication Latest Amendment Number if applicable Page s and or Figure s in error Please send to NOKIA CORPORATION Nokia Mobile Phones Business Group Nokia C...

Page 9: ...roduct switched on until it turns itself off or by using the battery discharge facility of any approved accessory available for the product Do not attempt to discharge the battery by any other means Use the battery only for its intended purpose Never use any charger or battery that is damaged Do not short circuit the battery Accidental short circuiting can occur when a metallic object coin clip or...

Page 11: ...eserved xi Issue 1 Nokia 3806 Service Manual Structure 1 General Information 2 Parts Lists and Exploded View 3 Service Software Instruction 4 Service Tools 5 Antenna Description and Troubleshooting 6 Baseband Description and Troubleshooting 7 RF Description and Troubleshooting 8 Schematics Glossary ...

Page 15: ...a All rights reserved Page 1 3 Issue 1 Table of Contents Product selection page 1 5 RM 583 PCI overview page 1 6 Phone features and sales package page 1 7 Accessories page 1 8 Technical Specifications page 1 9 General specifications page 1 9 Battery endurance page 1 9 ...

Page 17: ...tion Product selection RM 583 Nokia 3806 mobile terminal offers a CDMA single band engine and supports following features Figure 1 View of RM 583 COMPANY CONFIDENTIAL Copyright 2009 Nokia All rights reserved Page 1 5 Issue 1 ...

Page 19: ...ernal antenna z IHF speaker z Battery 860mAh BL 4C z FM radio z RUIM z 2 5mm stereo and mono headset jack z Micro USB 2 0 z White Backlighting z Lanyard notch hole z Bluetooth 2 1 z SDCC 2 0 SW z Brew 3 1 z Voice mail z Multimedia music video media player z Download DRM z Keypad lock via software z WAP browser z Long SMS MMS Instant Messaging and vCard z Alarm Clock Calculator Calendar Timer World...

Page 20: ...image formats z 72 polyphonic chords MIDI AAC AAC EAAC MP3 supported Sales package contents z Transceiver RM 583 z Standard Battery 860 mAh Li on BL 4C z Charger AC 6 z User Guide Accessories Supported accessories Type Name DC 6 Car Charger AC 6 Travel Charger HF200 Car Kits HS 47 Stereo Headset WH 200 Mono Headset BH214 Stereo Bluetooth BH104 Mono Bluetooth HF310 BT speakerphone CA 101 Micro USB ...

Page 21: ... Issue 1 Technical Specifications General specifications Unit Dimension mm Weight g Volume cc Transceiver with BL 4C 860 mAh Li Ion battery pack 110 45 4 12 5 83 5 54 Battery endurance Battery NMP Talk Time NMP standby Time BL 4C 860 mAh Li ion 5hours China 2 to 8 3 days SEAP MEA LTA 4 to 8 3 days ...

Page 25: ...RM 583 Parts lists and Exploded View COMPANY CONFIDENTIAL Copyright 2009 Nokia All rights reserved Page 2 3 Issue 1 Table of Contents Phone exploded view page 2 5 Spare parts overview page 2 5 ...

Page 27: ...d view Spare parts overview Spare parts list Refer to the latest Service Bulletins spare parts SWAP units and service tools on the Nokia Online website for RM 583 Nokia 3806 COMPANY CONFIDENTIAL Copyright 2009 Nokia All rights reserved Page 2 5 Issue 1 ...

Page 31: ... 2009 Nokia All rights reserved Issue 1 Page 3 3 Table of Contents Software summary page 3 5 Hardware operating system and environment request page 3 5 Software utilization page 3 5 Installation page 3 5 Use of AMS page 3 18 Bload mode page 3 18 General mode page 3 25 ...

Page 33: ...z RAM 256MB Required Disk space 500MB Interface ports USB Table 1 Lowest request for Hardware configuration Software utilization Insert dongle AMS has two function modes Bload mode and General mode When in Bload mode the handset must be working in Bload mode When in general mode the handset must be working in power up mode Bload mode only has one type Download General mode includes seven types Dow...

Page 34: ...rd install Calibration Tool Run Time which supports RF calibration Steps for installing phone driver 1 Double click the NOKIA 3806 USB DRIVER Ver1 1 msi 2 Click Next to continue with the following steps COMPANY CONFIDENTIAL Copyright 2009 Nokia All rights reserved Issue 1 Page 3 6 ...

Page 36: ...lling dongle driver Note If you don t have dongle you must have User ID and password otherwise you can t use AMS tool 1 Double click Sentinel System Driver Installer 7 5 0 exe 2 Click Next to continue with the following steps COMPANY CONFIDENTIAL Copyright 2009 Nokia All rights reserved Issue 1 Page 3 8 ...

Page 40: ... Finish button to complete the installation Steps for installing calibration tool run time 1 Double click setup exe 2 Click Next to continue with the following steps COMPANY CONFIDENTIAL Copyright 2009 Nokia All rights reserved Issue 1 Page 3 12 ...

Page 46: ...by the phone which are also supported on the general mode Follow the steps below to enter the download mode 1 Resume power supply after the mobile phone is powered off 2 Press Down key for about 5 seconds till USB cable is connected between the PC and the phone Steps for installing package 1 Double click the package you want to install It displays as below COMPANY CONFIDENTIAL Copyright 2009 Nokia...

Page 49: ...stallation is finished The Download tab will show all available software versions for update according to the CPC code input by you or by the combo box 1 Click the Download tab COMPANY CONFIDENTIAL Copyright 2009 Nokia All rights reserved Issue 1 Page 3 21 ...

Page 51: ...Search SW Version button Note If the warning dialog pops up refer to below instructions 1 You have input an incorrect CPC code 2 You have not installed the appropriate package 3 Select the exact SW Version you need COMPANY CONFIDENTIAL Copyright 2009 Nokia All rights reserved Issue 1 Page 3 23 ...

Page 53: ...seven functions they are Download Display Capture Label Printing Write NV RF Backup PRI Operation and RF Calibration Note The handset must be in Power Up status Download Download function in General mode is same as that in Bload mode Details please refer to Page 3 23 COMPANY CONFIDENTIAL Copyright 2009 Nokia All rights reserved Issue 1 Page 3 25 ...

Page 54: ...tings editor PRI Settings Editor supports loading the file on PC to Phone reading and writing PRI NV value 1 Click PRI Operation on the left panel to enter PRI operation interface COMPANY CONFIDENTIAL Copyright 2009 Nokia All rights reserved Issue 1 Page 3 26 ...

Page 58: ...RM 583 Service Software Instruction 4 Click Search to find the NV item by NV ID or NV name and then Find COMPANY CONFIDENTIAL Copyright 2009 Nokia All rights reserved Issue 1 Page 3 30 ...

Page 59: ... to change PRI NV value Double click them to change the value 6 Click Write and Save to file to write PRI NV value to phone 7 Click Open to open a PRI file on PC to write to the phone COMPANY CONFIDENTIAL Copyright 2009 Nokia All rights reserved Issue 1 Page 3 31 ...

Page 60: ...mpare compares two PRI files and indicates the difference between them Note Before the compare operation you must read the PRI from the phone once 1 Click PRI Compare to enter PRI compare interface COMPANY CONFIDENTIAL Copyright 2009 Nokia All rights reserved Issue 1 Page 3 32 ...

Page 61: ...vice Software Instruction 2 Select two PRI files on PC by Browse button 3 Click Start the comparison will be shown on the list left COMPANY CONFIDENTIAL Copyright 2009 Nokia All rights reserved Issue 1 Page 3 33 ...

Page 63: ...y Save as button Label printing Label Printing is used to print out the product label Read out the data from the handset first transfer into file and print it out Set up the printer Select Start Control panel Printer and fax on your PC COMPANY CONFIDENTIAL Copyright 2009 Nokia All rights reserved Issue 1 Page 3 35 ...

Page 64: ...to set Zebra 110XiIII Plus 600dpi printer as the default printer Right click the icon select Properties choose Port sheet select Lpt1 port Click OK button finish the configuration COMPANY CONFIDENTIAL Copyright 2009 Nokia All rights reserved Issue 1 Page 3 36 ...

Page 65: ...re Instruction 2 Click Label Printing button to enter label printing interface 3 Click Refresh 4 Read out data and transfer into printing file COMPANY CONFIDENTIAL Copyright 2009 Nokia All rights reserved Issue 1 Page 3 37 ...

Page 66: ...inate of the label s top left corner is set as 0 0 Only the latest X Y offset adjusted by you will be reserved when you open the tool next time 5 Click print to start printing RF backup Critical Data Backup is used to backup the data NV RF parameters 1 Switch to RF Backup COMPANY CONFIDENTIAL Copyright 2009 Nokia All rights reserved Issue 1 Page 3 38 ...

Page 69: ...uction 3 Backup successfully RF calibration RF calibration is a tool for automatic tuning of RF values Check the hardware setup before the calibration COMPANY CONFIDENTIAL Copyright 2009 Nokia All rights reserved Issue 1 Page 3 41 ...

Page 71: ...ere are two files which need to be configured before using the tool 3 1 Sysconfig ini 3 1 1 COM 9 The section is to set com port number and its baud rate If using RS232 Cable between PC and DUT s UART1 see Hardware Connection then ComPort 1 or 2 9 Note It is recommended to use UART1 to communicate with PC if using USB cable between PC COMPANY CONFIDENTIAL Copyright 2009 Nokia All rights reserved I...

Page 72: ...t the power supply type and set its address and voltage if control by remote Type 0 9 0 no 0 indicates the power supply is used without GPIB remote PS 1 E3631A 2 HP66309 3 HP66311 4 Keithley2306 5 Keithley2304 Address 5 NormalVoltage 3 7 LowVoltage 3 2 9 For Low Battery Calibraton HighVoltage 4 2 9 For High Battery Calibration 3 1 4 cable loss 9 The section is to set the using RF cable s loss 3 1 ...

Page 73: ...all kinds of cable shown as Hardware Connection configure sysconfig ini and calibrationconfig ini according to the introduction above 5 Start Test Click Start Button pop up input dialog and input device serial number shown as below After input serial number Press Enter key to begin to calibrate shown as below COMPANY CONFIDENTIAL Copyright 2009 Nokia All rights reserved Issue 1 Page 3 45 ...

Page 75: ...RM 583 Service Software Instruction Display capture Display Capture supports screen capture 1 Click Display Capture COMPANY CONFIDENTIAL Copyright 2009 Nokia All rights reserved Issue 1 Page 3 47 ...

Page 76: ...n 2 Click Capture 3 Save the picture to PC by Save as or clear the picture by Clear Write NV Write NV function supports Phone NV value set 1 Click Write NV COMPANY CONFIDENTIAL Copyright 2009 Nokia All rights reserved Issue 1 Page 3 48 ...

Page 78: ...Service Software Instruction 3 When all NV are written a pop up is displayed 4 Click Refresh to see the updated Phone information COMPANY CONFIDENTIAL Copyright 2009 Nokia All rights reserved Issue 1 Page 3 50 ...

Page 81: ...page 4 5 L3 service configuration page 4 5 Service tools page 4 5 L3 service configuration page 4 6 MJ 272 handling instructions page 4 6 External connections switch instructions page 4 6 MJ 272 PWB pin definition page 4 8 Handling instruction page 4 8 Power on sequence page 4 11 AC power supply page 4 11 DC power supply page 4 12 ...

Page 83: ...This jig allows PWB level service and troubleshooting It supports regulated and unregulated DC input voltages a headset jack for audio tests and a RUIM card reader It also supports simultaneous RF connections to the CDMA engine AK05G 0650400W2 AC power adapter This AC power adapter with 5 50mm power cord connector is used to provide DC power to the mobile phone and service tools e g Module Jig fro...

Page 84: ...he use of the service software It is not possible to use the service software without the dongle Service configuration The following diagram illustrates service setup with Module Jig MJ 272 handling instructions External connections switch instructions COMPANY CONFIDENTIAL Copyright 2009 Nokia All rights reserved Issue 1 Page 4 6 ...

Page 85: ...n power supply Vcc 6 5V 7 5V 5 RF connector 6 UIM slot 7 S2 switch for download and test mode will be removed in MP stage 8 S3 switch for power on and off 9 S1 switch for current measurement 10 S4 switch for main power and backup power supply COMPANY CONFIDENTIAL Copyright 2009 Nokia All rights reserved Page 4 7 Issue 1 ...

Page 89: ...n from the USB port of the personal computer or notebook to the micro USB connector on Module jig for SW update flashing 3 Full Phone functionality Press 0521 in idle mode to enter test mode manual test to perform full phone functionality check Power on sequence AC power supply 1 S4 right Vcc1 6 5V 7 5V Imax 1A 2 S1 right measure main current with current meter COMPANY CONFIDENTIAL Copyright 2009 ...

Page 90: ...RM 583 Service Tools COMPANY CONFIDENTIAL Copyright 2009 Nokia All rights reserved Issue 1 Page 4 12 3 S3 right power on DC power supply 1 S4 left Vcc2 3 7V 4 2V 2 S3 right power on ...

Page 93: ...ight 2009 Nokia All rights reserved Page 5 3 Issue 1 Table of Contents Introduction page 5 5 Visual quality requirements page 5 5 Failures and corrective measures page 5 5 Damaged RF feed point pin page 5 6 Obstructed RF feed point pad page 5 7 RF connector failure page 5 8 ...

Page 95: ...r with bare hands z No visual cracks or mechanical defects z No oil dirt or particles attached on the parts z Radiator must be flat without warping and aligned with the plastic housing z The length of all pins must be identical and the pins align Failures and corrective measures The two antennas are assembled into B Cover as shown in Figure 1 If no internal antenna is installed the antenna gain is...

Page 96: ...antenna s RF feed point pin does not touch the PWB the antenna gain degrades by more than 17 dB z If the RF feed pin is broken or bent replace the antenna asm Module z If the RF feed pin spring turns out damaged replace the antenna asm Module Figure 2 Back view of internal antennas COMPANY CONFIDENTIAL Copyright 2009 Nokia All rights reserved Page 5 6 Issue 1 ...

Page 97: ...sion or the pad is missing replace the PWB z If a pad is obstructed or covered by something clean the pad z If any component of antenna match circuit is missing replace the related component Figure 3 PWB layout of RF feed point and antenna match circuit for main antenna Figure 4 PWB layout of RF feed point and antenna match circuit for Bluetooth antenna COMPANY CONFIDENTIAL Copyright 2009 Nokia Al...

Page 98: ...value is close to zero replace the RF connector Note Do not insert RF cable to RF connector when testing the resistance value Because the RF connector is also a switch when RF cable is inserted RF output is disconnected from RF input z RF input terminal connect to duplexer z RF output terminal connect to the antenna pad through antenna match circuit z RF connector terminal connect to RF coaxial ca...

Page 101: ...crophone refer to MIC headset Audio PA circuit design page 6 15 Audio faults troubleshooting page 6 15 Display faults page 6 18 Display faults troubleshooting page 6 18 Keypad faults refer to Keypad circuitry page 6 19 Keypad faults troubleshooting page 6 19 Keypad part circuitry page 6 22 Vibrator faults page 6 22 No vibration troubleshooting page 6 22 Vibrator circuit page 6 23 USB interface fau...

Page 103: ...nent Model Number Supplier Baseband processor QSC1110 0 284CSP Qualcomm Camera 339844 BYD Memory PF38F5060M0Y3DF Numonyx LCD BM8547 BYD Bluetooth BTS4025 0 36WSP Qualcomm FM Stereo radio TEA5991UK NXP COMPANY CONFIDENTIAL Copyright 2009 Nokia All rights reserved Page 6 5 Issue 1 ...

Page 105: ...ement tasks within a subscriber unit This enables reduced handset complexity cost time to market and board space requirements while providing many features and functionalities The global expansion of 3G CDMA 1X networks has extended the availability of high speed wireless data access With increased accessibility comes increased demand for wireless devices that function as cameras MP3 audio players...

Page 106: ...d BB functions 9 Processors 9 Memory support 9 Connectivity 9 Multimedia 9 Air interfaces 9 Internal BB functions 9 General purpose I Os 9 Housekeeping ADC 9 Audio codec z Power management PM functions 9 Input power management 9 Output voltage regulation 9 General housekeeping 9 User interfaces 9 PM level interfaces Baseband is powered by the following regulators VREG_S1 1 2V 600mA VREG_S2 1 2V 60...

Page 107: ...RUIM 1 8 3 3V 150mA VREG_USB 3 3V 50mA VREG_XO 2 85V 50mA Power up While PS_HOLD signal is low QSC11xx device is in one of its OFF states Circuits continually monitor these 4 events that could trigger a power on sequence COMPANY CONFIDENTIAL Copyright 2009 Nokia All rights reserved Page 6 9 Issue 1 ...

Page 108: ...ry is initiated Power off While PS_HOLD signal is high QSC11xx device is in one of its ON states Circuits continually monitor these 3 events that could cause a power off sequence z PS_HOLD signal goes low responding to keypad power button being pressed z VDD voltage drops below UVLO threshold z QSC11xx core die temperature exceeds its severe over temperature threshold Power Distribution COMPANY CO...

Page 109: ...keypad RM 583 uses light emitting diodes LEDs for liquid crystal display LCD and keypad illumination There are four white LEDs for LCD and two LEDs for the keypad KPD_DRV_N is the signal used to drive keypad LEDs LCD_DRV_N is the signal used to drive LCD LEDs RM 583 uses a color LCD The interface uses a parallel bus to transfer the Command Data between QSC and LCD Troubleshooting Firstly carry out...

Page 110: ...aults z Keypad Faults z No Vibration z USB Interface Disabled z FM Disabled z UIM Card Faults z T Flash Card Faults z Camera Faults z Charging disabled Note 1 The Shielding Case Assy can not be reused after removal 2 After using the heat gun domesheet needs to be replaced Power does not stay on refer to VREG_OUT circuit Below four cases which may cause this failure big current no current no holdin...

Page 111: ...asure each output voltage of PMU such as VREG_S1 VREG_S2 VREG_MPLL VREG_MSME1 VREG_MSME2 VREG_MSMA VREG_RUIM VREG_USB VREG_XO 2 Check if the clock 19 2MHz and RTC 32 768KHz are normal 3 If the signals are abnormal check the fault reason 4 If they are normal check the welding of QSC and Flash perform welding or replacement Replacement includes Flash Updating The welding of the display panel connect...

Page 113: ...on of SPK and SPK test needles the circuit from test needles to speaker and the physical appearance of speaker Check MIC and receiver Press 0521 on the keymat in idle mode to enter test mode manual test audio main mic receiver speak at the MIC and listen at the Receiver if there is no voice check test needle of MIC and Receiver the circuitry and the outlook of MIC and Receiver Audio faults trouble...

Page 116: ...display flowery or color abnormal First check if LCD is well connected with the module if not replace the connection or weld it again Then check the data input and operation voltage of LCD if they are both ok focus on CPU then Display faults troubleshooting COMPANY CONFIDENTIAL Copyright 2009 Nokia All rights reserved Issue 1 Page 6 18 ...

Page 117: ...rough a keypad connecter so when there is any keypad defect follow the instruction below 1 check keypad FPCA 2 if FPCA is ok check the connector in case any soldering issue 3 if the connector is ok turn to check and analyze main board Keypad faults troubleshooting COMPANY CONFIDENTIAL Copyright 2009 Nokia All rights reserved Page 6 19 Issue 1 ...

Page 120: ...oubleshooting Keypad part circuitry Vibrator faults Press 0521 on the keypad in idle to enter test mode manual test vibrator on No vibration troubleshooting COMPANY CONFIDENTIAL Copyright 2009 Nokia All rights reserved Issue 1 Page 6 22 ...

Page 121: ...or circuit USB interface faults 1 Check if the bottom insert of the mobile phone is well connected 2 Check the connection of COM port on PC and the configuration of COM setting COMPANY CONFIDENTIAL Copyright 2009 Nokia All rights reserved Page 6 23 Issue 1 ...

Page 122: ... the mobile phone connection whether there is foreign impurity 4 Check Vbus D D status 5 Check if USB over Voltage IC works normally 6 Check CPU welding USB Interface disabled troubleshooting COMPANY CONFIDENTIAL Copyright 2009 Nokia All rights reserved Issue 1 Page 6 24 ...

Page 128: ...card Unreadable Check if CN1401 is broken or soldering issue Check F1401 D1401 and Its around components is broken or Soldering issue Change CPU Change CN1002 Change the broken Components yes Ye s no No COMPANY CONFIDENTIAL Copyright 2009 Nokia All rights reserved Issue 1 Page 6 30 ...

Page 130: ...era socket is broken or has soldering issue Check F2001 F2003 and around components broken or soldering issue Camera module fail Change the camera socket Change the broken Components Ye s Ye s yes No No Check the signals of camera such as clock is ok or not Change CPU no COMPANY CONFIDENTIAL Copyright 2009 Nokia All rights reserved Issue 1 Page 6 32 ...

Page 135: ...ht 2009 Nokia All rights reserved Issue 1 Page 7 3 Table of Contents Components layout page 7 5 TX troubleshooting page 7 8 QDART tool setup page 7 8 TX DC test points page 7 9 TX RF test points page 7 10 TX path troubleshooting page 7 10 RX path troubleshooting page 7 12 ...

Page 140: ...USB port with CA 101 and add power supply via power plug in connector 4 Open QRCT tool make the phone work in FTM mode Figure 5 QRCT for debugging 5 Select com port under Mobile Mode Control menu then select FTM see 6 Set band to CDMA BC0 see 7 Set channel to 358 see 8 Set Waveform to CDMA see 9 Set PA Range to R0 on R1 off see 10 Set Set TX on off to on see 11 Set Set TX PDM Adj to 0 see COMPANY ...

Page 141: ...lue 1 L205 VPH_PWR VPH_PWR VBAT power supply for three PA Modules VPH_PWR 0 shut up 2 C250 PA_R0 PA_R0 High high gain mode PA_R0 Low bypass mode 3 C251 PA_ON0 PA_ON0 High for cell band PA turn on PA_ON0 Low off Table 1 TX DC Test Point COMPANY CONFIDENTIAL Copyright 2009 Nokia All rights reserved Issue 1 Page 7 9 ...

Page 142: ...n Value 1 C319 Cell PA input about 4dBm 2 C253 Cell PA output about 29dBm 3 C229 Coupler output about 29dBm 4 C103 Duplexer output About 28dBm 5 S101 RF Connector Output about 28dBm Table 2 TX RF Test Points TX path troubleshooting COMPANY CONFIDENTIAL Copyright 2009 Nokia All rights reserved Page 7 10 Issue 1 ...

Page 143: ...st point 1 table 2 is it ok No Reheat solder joints of L312 C319 C320 Yes No No COMPANY CONFIDENTIAL Copyright 2009 Nokia All rights reserved Issue 1 Page 7 11 Measure RF test point 2 table 2 is it ok Change U202 PA Reheat solder joints of C253 No Yes No Measure RF test point 3 table 1 is it OK No Reheat solder joints of U201 Yes Measure RF test point 4 table 2 is it ok No Reheat solder joints Of ...

Page 144: ...09 Nokia All rights reserved Page 7 12 Issue 1 RX path troubleshooting If Tx path is OK but Rx path is not OK check U103 first then L105 C306 C307 L307 L308 C308 L303 and L304 If all the soldering of the above components 0402 is OK check QCS1110 to see if replacement is needed ...

Page 161: ...F Graphics Interchange Format GPIB General purpose interface bus HS Handset I O Input Output IC Integrated circuit IHF Integrated hands free JPG Joint Photographic Group KPD Keypad LCD Liquid Crystal Display LED Light emitting diode MDP Mobile display processor MIC Microphone MIDI Musical Instrument Digital Interface MMS Multimedia messaging service MSM Mobile Station Modem PA Power amplifier PC P...

Page 162: ...ved Page Glossary 4 Issue 1 RX Radio Receiver SDCC Secure Digital Connectivity SIM Subscriber Identity Module SMS Short Messaging Service SW Software TX Radio Transmitter UIM User Identity Module USB Universal Serial Bus VBAT Battery voltage WAP Wireless application protocol ...

Search results

Summary of Contents for 3806

Reviews:

Related manuals for 3806

Brands by name

Popular brands

Nokia 3806, Service Manual

Search results

Summary of Contents for 3806

Reviews:

Related manuals for 3806

Brands by name

Popular brands