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I360 Mobile Phone Maintenance Manual v0.1

I360 Mobile Phone Maintenance

Manual

Lenovo Mobile Telecommunications Co., Ltd.

All information contained herein, including the text, diagrams, data,

graphics, images, methods and ideas, is the property of Lenovo Mobile

Communications Co., Ltd. and shall not be disclosed, copied,

duplicated, photographed and transferred in any way by any individual

and organization without the written approval of the Mobile

Communication Office of Lenovo Research Institute.

Lenovo Mobile Telecommunications Co., Ltd.

LENOVO Lenovo Mobile Telecommunications Co., Ltd.

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Содержание I360

Страница 1: ...and ideas is the property of Lenovo Mobile Communications Co Ltd and shall not be disclosed copied duplicated photographed and transferred in any way by any individual and organization without the written approval of the Mobile Communication Office of Lenovo Research Institute Lenovo Mobile Telecommunications Co Ltd 2005 All rights reserved LENOVO Lenovo Mobile Telecommunications Co Ltd OPEN DOC P...

Страница 2: ...Voice Baseband Codec 11 2 3 GSM Processor 12 2 3 1 Mcu Chip 12 2 3 2 ABB chip 13 3 Disassembly 14 3 1 Recommended tools 15 3 2 Disassembling Steps 15 4 I360 Assembly Steps 16 5 Troubleshooting 16 5 1 Block Diagram of Troubleshooting 16 5 2 Problem Identification and Maintenance 17 5 2 1 Block Diagram and Modules Description 17 5 2 2 Baseband troubleshooting 20 5 2 3 RF Troubleshooting 24 6 Enginee...

Страница 3: ... soldering iron oscilloscope and communications system analyzer Any element of the phone can be serviced at this level and the service technicians will try their best to solve various problems 3 Level 3 is for problems that cannot be solved at level 2 These problems will be solved by the research and development center of the manufacturer Important statement The target readers of this service manu...

Страница 4: ...Frequency range Transmit 1710 1785 MHz Reception 1805 1880 MHz Bandwidth channel 200 kHz Number of channels 374 x 8 TDMA Carrier modulation GMSK Gaussian Minimum Shift Keying Duplex bandwidth 95 MHz Frequency stability 0 1 ppm Output power 30 2dBm 0 5dBm Reception sensitivity 105 dBm Ambient temperature 10 55 GPRS feature GPRS CLASS 8 Table 2 Operation voltage Operation voltage Li polymer battery ...

Страница 5: ...pported specialized transmission cable required Depends on the network used 2 Working Principles Baseband Structure Block Diagram Voice band Baseband coder Radio receptio n GSM GPRS Processor 128Mbit FALSH Backlight Displayer Keypad SIM Data terminal adaptation LENOVO Lenovo Mobile Telecommunications Co Ltd OPEN DOC Page 5 of 5 ...

Страница 6: ...used by another cell which is far away enough This makes it possible for multiple subscribers to use the same channel separately within the same geographical region 2 1 2 GSM Description The GSM system utilizes digital wireless communications technology which makes it different from previous cellular systems Compared with older analog systems the GSM system enjoys many advantages which include the...

Страница 7: ...e mobile switching center A mobile phone can utilize any of the channels of the system which means the mobile phone can be used in any of the cells Within any specific cell the wireless communication requires lower power so the channels can be reused by cells which do not intersect with each other For instance in Figure 2 cell A utilizes channels 1 8 cell B utilizes channels 9 16 cell C utilizes c...

Страница 8: ...ucing impact of the attenuation and improves the security and privacy of the wireless connection A GSM wireless call demands to transmit the corresponding pulse in each frame but the pulses may not be transmitted continuously So the unit should be made more efficient When a mobile phone is moved from one cell to another cell measures should be taken to reduce the inconvenience as much as possible ...

Страница 9: ...cial service area there may be communications interrupts for some part of the area The mobile phone s identity information is kept in the Host Location Register HLR and Visiting Location Register VLR of the local GSM system VLR contains identity information of all wireless phones enabled locally When roaming into another mobile communications network the identity information of a mobile phone will...

Страница 10: ...I360 Mobile Phone Maintenance Manual v0 1 2 1 4 Baseband Block Diagram Radio frequency block diagram LENOVO Lenovo Mobile Telecommunications Co Ltd OPEN DOC Page 10 of 10 ...

Страница 11: ...ontroller runs protocols at layers 1 2 and 3 and executes the human machine interface software 2 2 2 The ABB chip performs audio and baseband A D and D A conversion acting as an interface to the digital elements of the chipset and to the speaker and wireless module The auxiliary converters in the ABB chip are used for burst pulses control automatic frequency control automatic gain control as well ...

Страница 12: ...all base band functions of the layer 1 protocols including A Complete Single Chip GSM Processor B Channel Codec Subsystem a Channel Coder decoder b Interleaving de interleaving c Encryption decryption d Control processor d 32 bit microcontroller ARM7TDMI C Serial and parallel display interfaces D Keyboard interface E EPROM interface F SIM interface G ABB interface H Wireless control subsystem I Pr...

Страница 13: ...ting interface Q 1 5V operation voltage R 179 pin BGA package S Voice baseband Codec and A D interface 2 3 2 ABB chip A Power Voltage 1 5V 3 3V B Input frequency of system clock 13MHz C Ambient temperature 40 85 D Complete interfaces a A D interfaces for voice I O b A D interfaces for baseband I O c A D interfaces for auxiliary control signals E Voice Codec a Complete linear Codec b Dual channel 1...

Страница 14: ...with a 4x repeater e On chip slop random memory f 4 channel 10 bit A D converter g Serial auxiliary interface h Charger interface i 3V 5V SIM interface j Power management module H 100 Ball BGA package 3 Disassembly The disassembly of bar phone I360 is relatively complicated To avoid internal elements and the housing damage when disassembling or assembling again the service operations should be per...

Страница 15: ...tionality can be utilized a Anti static pad including the grounding lead b Anti static bracelets c Rotary screw driver Type T5 with a torque of 0 15Nm d Ф1 4mm cross screw driver e Nipper f Chock gauge 100mm in length type 0 02mm 1 00mm the mesne thickness is 0 4mm g Digital multimeter h Oscilloscope i Electric soldering iron j Heat gun j Communications system analyzer 3 2 Disassembling Steps The ...

Страница 16: ...ware Explain to the user Diagnosis Notice A brand new problem has to be solved based on the technician s experience The troubleshooting list given below contains the known faults of I360 which is for Level 1 service reference 5 1 1 Chips and elements inside the mobile phone are driven by weak currents so the maintenance should not be performed within a magnetic field or with high voltage to avoid ...

Страница 17: ... the chips clear in mind During the troubleshooting circuit analysis careful inspection correct judgment as well as quick and accurate operation are required to prevent any man made malfunction and economic loss Repair operations should be performed after the type of the fault has been confirmed 5 1 4 Final Testing or Calling on Trial Final testing or calling on trial are performed to check whethe...

Страница 18: ...utput should be valid If there is no output check the LDO s input and the shutdown control which should be 1 V DBB 1 5V TO DIGITAL CORE V FLASH 2 8V TO MEMORY V SRAM 2 8V TO MEMORY V IO 2 8V TO Peripherals V ABB 2 8V TO Analog Part VBAT 3 5 4 2V Battery Voltage Note VBAT is connected directly with the battery providing power supply to the phone components via L301 filter induce The network name is...

Страница 19: ...splay module primarily includes the JPEG chip U301 LCD displayer camera and LCD backlight driver U320 The clock signal 13MHz 2 8V of JPEG is provided by DBB The voltage of LCD is 2 8V provided by pins 28 29 30 of J300 The data and control signals are provided by the JPEG chip to the LCD which includes data chip select and read write pins Camera data signals are connected with the JPEG chip includi...

Страница 20: ...ich should indicates the battery level If there is battery level indication press the Power key for about 2 seconds to see whether the phone functions normally Battery connectors are of poor elasticity Replace the battery connector J305 1 The phone cannot be turned on Power key malfunction Check the mechanical part of the Power key and check the switch 2 Breakdown Error in program running Remove a...

Страница 21: ...camera Make sure the camera lens is clean Camera damaged Replace the camera Power voltage confirmation Check U318 output voltage Possible EMI filter soldering problem Check U316 and U317 35 No picture captured or abnormal picture Possible JPEG chip U301 malfunction Check the JPEG chip for possible pseudo soldering B soldering fall of acklight pins pseudo f or incorrect installation Solder the back...

Страница 22: ...harging indicator should appear 15 30 minutes after the charging is started Poor connection between the battery and the battery connector Replace the battery connector 19 Recharging failure or no charging indication 18 pin connector soldering problem Checking the soldering of this 18 pin connector Check the char tube ch ging MOS Q304 on the PCB and eck the resistor connection Solder again or repla...

Страница 23: ...call barring enabled 26 Inaccessible phonebook SIM card malfunction Insert the SIM card again No message free space for SMS s Delete some stored SMS messages 27 SMS messages cannot be received Incorrect software configuration Check the setting related with the SMS feature 28 Some features can not be configured Not provided by the network service provider Contact the network service provider 29 Ech...

Страница 24: ...ators Poor connection the speaker Check the speaker for any soldering or connection problem Reinstall the speaker when necessary Damaged element Replace the speaker Music chip malfunction Check the related elements of the music circuit 13 No ring Incorrect software settings Checking software settings S ele oldering problem with ments of the earphone circuit In particular check U319 U300 and U333 1...

Страница 25: ...Refer to this diagram for the working process 5 2 3 2 EGSM DCS Transmission Troubleshooting The transmission troubleshooting steps are illustrated in the diagram given below LENOVO Lenovo Mobile Telecommunications Co Ltd OPEN DOC Page 25 of 25 ...

Страница 26: ...I360 Mobile Phone Maintenance Manual v0 1 LENOVO Lenovo Mobile Telecommunications Co Ltd OPEN DOC Page 26 of 26 ...

Страница 27: ... U602 are right or not Check the control signals of Pins 1 and 6 of FE600 are right or not Check antenna Check baseband Solder again Check the circuit adaptable between FE600 and U602 for possible pseudo soldering Replace the elements of circuit adaptable Check U602 for possible pseudo soldering No I Q signals had been received upon device inspection Solder again YES NO 5 2 3 4 26MHz Reference Clo...

Страница 28: ...F or baseband and other basic performances on the mobile phone Besides RF Test and Baseband Test the engineering mode offers testing on some other data such as the IMEI code and the product serial number RF Primarily for RF parameter calibration and checking network information including the current community and adjacent communities LENOVO Lenovo Mobile Telecommunications Co Ltd OPEN DOC Page 28 ...

Страница 29: ...e command on the PC to read the IMEI code and the product serial number The data will be sent back to the PC from the mobile phone s FFS and will be displayed in the dialogue box Send the command on the PC to write the IMEI code and the product serial number The data will be sent from the PC to the mobile phone s FFS Other commands During a test when the mobile phone is dialed from outside send th...

Страница 30: ... version number 1040 To display network information BCH BRXL C1 C2 C0 N0 N1 N2 N3 N4 N5 INFO INFO BCH BRXL BSIC DSC TN TXLEV RLT TAV CBA CBQ C1 C2 N0 INFO INFO BCH BRXL BSIC LAC CELID TALIG CBA CBQ C1 C2 FFSET LENOVO Lenovo Mobile Telecommunications Co Ltd OPEN DOC Page 30 of 30 ...

Страница 31: ... INFO BCH BRXL BSIC LAC CELID TALIG CBA CBQ C1 C2 FFSET N2 INFO INFO BCH BRXL BSIC LAC CELID TALIG CBA CBQ C1 C2 FFSET N3 INFO INFO BCH BRXL BSIC LAC CELID TALIG CBA CBQ C1 C2 FFSET LENOVO Lenovo Mobile Telecommunications Co Ltd OPEN DOC Page 31 of 31 ...

Страница 32: ...k information interfaces For all the interfaces press Up Down to display the next page When the last page is displayed press Down to return to the first page When the first page is displayed press Up to display the last page Press Return to return to the idle screen 1111 Baseband Test To test the main LCD display LENOVO Lenovo Mobile Telecommunications Co Ltd OPEN DOC Page 32 of 32 ...

Страница 33: ...ss NEXT to test the ring tones To play some MIDI music Press NEXT to test the vibrator The vibrator is started Press NEXT to test the keypad Press the Left functional key and F1 will disappear as illustrated below LENOVO Lenovo Mobile Telecommunications Co Ltd OPEN DOC Page 33 of 33 ...

Страница 34: ...OK to exit and return to the idle screen 0000 Hardware software version number I360 H220 060216 I360 S075 050520 This interface indicates the hardware version is 2 20 and the software version is S075 Press the Right soft key or OK to exit and return to the idle screen B The form of Maintenance Manual Feedback is for reporting any problem or missed information herein To feed back please kindly a Ph...

Страница 35: ...tail and give necessary explanation Maintenance Manual Doc No Proofread Name Address Phone Number Problem or information missed Please refer to the section and give the page number or figure number LENOVO Lenovo Mobile Telecommunications Co Ltd OPEN DOC Page 35 of 35 ...

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