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Nokia 7110 Manual Download Page 25

CONFIDENTIAL

25 (30)

NSE-5

Service & Analysis Center Europe

Repairhints

Version 1.0 Approved

SACE AMS Training Group

30.07.2000

Repairhints_nse5_002508

Checked by:
AMS TRAINING GROUP

Approved by:
SACE

MICROPHONE DOES NOT WORK

-Also see SB 018 –

Note : First of all check the mechanical condition of the phone and slide for mechanical
damage or stuck. (PogoPins).

Probable reasons:

-

 

Shorts between contact tracks and slideflex.
These shorts often occur at the end of the slide-cover (friction-dust).
If this happens, clean the flex with dustfree cloth, especially in the bottom corner.

-

 

The Pogo pins in microphone housing get stuck. If this happens, change
A-Cover.

-

 

Check the internal contact springs from Pogo-pins and their connector pads
on the PCB.

-

 

Check impedance (~ 1,8k) , change slide cover if necessary.

-

 

Check solderings of Z103/104, C106/107/132.

-

 

Check signals (given over MPA-1 =audio test probe ) at V100 in & out.

-

 

Check V_COBBA at V111 (2,8VDC).

-

 

Check voltage ( during call ) at C117/121 ( 1,4VDC ) , at E100 ( 0,3V ), E101 ( 1,8V ).

-

 

Change COBBA if all of the above works.

Rewriting of IMEI and SIMlock data is necessary after changing the COBBA!

-

 

If the error persists, MAD or PCB should be the reason.

Summary of Contents for 7110

Page 1: ...L 1 30 NSE 5 Service Analysis Center Europe Repairhints Version 1 0 Approved SACE AMS Training Group 30 07 2000 Repairhints_nse5_002508 Checked by AMS TRAINING GROUP Approved by SACE Repairhints 7110 NSE 5 HD 945 ...

Page 2: ...I SIMlock in certain cases Please pay attention to separate notes Underfills broken balls µBGA It is not possible to change underfilled components The trial will damage PCB surely All replaceable µBGA components must be renewed after removing Check soldering points remove oxidated solderings broken balls carefully by enclosing few new solder before placing new components µBGA must be soldered only...

Page 3: ...is It is to be used additionally to the service manual and other service information like Service Bulletins for that reason it doesn t contain any circuit descriptions or schematics All measurements are made using following equipment Nokia repair SW WinTesla Version 6 43 DLL version NSE5 version 271 03 00 19 07 2000 Nokia Module Jig MJS 8 Digital multimeter Fluke 73 Oscilloscope Hitachi V 1565 Flu...

Page 4: ...oved by SACE Contents GENERAL 2 INTRODUCTION 3 INSERT SIMCARD 5 SIMCARD NOT ACCEPTED 7 PHONE DOESN T SWITCH ON 9 FLASH UPDATE NOT POSSIBLE 11 CONTACT SERVICE PROBLEMS 13 NOT CHARGING 14 NO SERVICE GSM 900 17 NO SERVICE GSM 1800 18 FAULTY SPECTRUM CHARTS 20 TX FAILURE 21 INTERNAL AUDIO FAILURE 23 EXTERNAL AUDIO FAILURE 24 MICROPHONE DOESN T WORK 25 ROLLERKEY PROBLEMS 27 SIMLOCKS 29 ...

Page 5: ...cked by AMS TRAINING GROUP Approved by SACE INSERT SIMCARD Insert SIMcard Check soldering and contacts of X100 Check signals at X100 see next page pin1 SIMclk pin2 SIMrst pin3 5 VSIM pin6 SIMdata Change N100 Check lines to GND at C116 129 130 131 Values must be 100k Also check R120 D300 or PCB faulty Resolder or change X100 OK not OK not OK OK not OK ...

Page 6: ...e times it is 5 Volt If the phone is switched on with SIMcard VSIM stays on the level with which the SIMcard works expected that SIMcard is not dirty or damaged Note that SIMClock and SIMData are only present when SIMcard is active for example when phone registers to network SIMReset is low active that means that the SIMcard will be reseted when SIMReset is 0 Volt This is the case after switching ...

Page 7: ... Rewrite SIMlock settings with NOKIA SECURITY PASSWORD or send phone to SACE If SIMlock is corrected or inactive but fault stays on change COBBA and rewrite SIMlock data SIMlock is OK If the MSIN data field is closed to a special IMSI number range only the operator is authorized to open the SIMlock See General SB 065 OK notOK NOTE If COBBA or D301 was changed SIMlock IMEI data must be rewrite Also...

Page 8: ...value should be higher than 100kOhm Check also R120 N100 CCONT faulty Check SIMClock SIMData SIMReset and VSIM It s also possible that broken solderings under CCONT N100 are the reason for this fault Remove CCONT tinplate oxidized pads carefully with only a little bit of flux and solder replace CCONT with µBGA rework machine N200 COBBA faulty If SIM card not accepted appears on LCD but SIMlock set...

Page 9: ...at C139 V_XO 2 8VDC at C112 V_REF 1 5VDC at C140 PURX 2 8VDC at R147 13MHz RFCLK at R301 Change X101 102 if bend or soiled Check L102 Change display assy Check R413 Change N100 Check V_BB line for shorts to GND No shorts change N100 Check V_XO line for shorts to GND No shorts change N100 Check V_REF line for shorts to GND No shorts change N100 Change N100 Check values around G701 Change G701 use c...

Page 10: ...04 C149 Check 32 768kHz squarewave at J318 3 3Vpp G701 Reference oscillator faulty Check Vcc 2 8V at G701 Check Vcont may vary between 1 and 3 5V note that it is necessary to change G701 if frequency error is higher than 50Hz N100 CCONT faulty Check Vb 3 6Vat C134 Check that PWRON decreases to 0V at R413 when powerswitch is pressed Check 32 768kHz squarewave at J318 Check 13MHz Clk frequency at R3...

Page 11: ...ably MAD or PCB defect Connect watchdog disable R413 see layout to GND Continue with section CCONT Check VBB 2 8VDC at C139 Vxo 2 8VDC at C112 Check PURX at R147 2 8VDC Check 32 768kHz squarewave signal at C150 approximately 600mV If not OK check periphery of B100 Change B100 or N100 if necessary Continue next page YES NO YES No message No message Any message Any message Any message It s now neces...

Page 12: ... pin4 Check R106 304 306 V101 102 Try to update again Phone is OK Change D304 305 306 try to update again Phone is OK Change D303 try to update again Phone is OK Change D301 try to update again Rewrite IMEI phone data update once again Probably MAD or PCB is faulty OK notOK OK Fail Fail Fail Contact service No message No message No message notOK Check V702 and accessory parts OK Check VCC at G701 ...

Page 13: ...arging RTC battery Assemble phone and leave battery10 Minutes on it CCONT interface failed Change CCONT N100 broken soldering DSP alive test failed Change COBBA If failure persists MAD should be the reason Swap because MAD is not changeable COBBA serial or parallel failed Change COBBA Warranty State failed Eeprom Data mismatch or phone is locked after swap process send Phone to SACE If the Phone r...

Page 14: ...E NOT CHARGING NOTHING HAPPENS IF CHARGER IS CONNECTED First of all Always Check the mechanical condition of all connectors and connections Not charging Check voltage level at R104 if it is higher than 0 4V when charger is connected Check change N100 Check change R102 103 104 F100 X101 102 200 N101 C101 144 R101 soldering electrical and mechanical condition PCB faulty lower 0 4V OK 0 4V notOK ...

Page 15: ...ration Battery temperature failed Battery size failed Battery voltage failed Charge current failed Charge voltage failed Try to charge after calibration Check X101 values at R115 123 Change N100 Check X102 values at R115 123 Change N100 Change N100 Check R102 change N100 101 OK not OK not OK not OK not OK Check V_CHAR on voltage devider R103 104 Change N100 Check F100 R100 change N101 OK Not charg...

Page 16: ...GND Check resistance of V_In line to GND 50 kOhm if resistance is not ok Check R101 C101 C144 or change N101 N100 faulty Change CCONT N100 if any A D value is out of limits but DC voltage is ok If DC voltages are not ok Check corresponding voltage dividers and battery connectors X101 102 Probably broken solderings under CCONT N100 Remove CCONT tinplate oxidized pads carefully with flux and solder ...

Page 17: ...8 Check 71 MHz IF at N700 pin37 38 Check 13MHz IF in out at Z701 Check 13MHz IF at N700 pin 23 24 Change COBBA N200 Check 13MHz Ref frequency at G701 N700 pin15 50Hz Check GSM LNA 947MHz at N600 pin27 Check 947 MHz in out at Z600 Check UHF 2036 MHz at N600 Pin3 Check UHF 2036 MHz at G700 Check Vc Vcc at G700 Change G701 Check Z500 503 Change Z600 Change N600 Failed to set low reference Change G700...

Page 18: ...efect Check PCN_LNA at N600 pin34 Check 1842 8 MHz in out at Z602 Check UHF 2029 8MHz at G700 and N600 pin3 Check IF 187MHz at N600 pin45 46 Check 1 4 VHF 116 MHz at N600 pin9 Check values at N700 a n d G 7 0 2 Change Z501 Check PCN_LNA at Z504 Z503 X501 X500 Change Z602 Change G700 Change N600 Check 71MHz IF at C617 618 Check 71MHz IF at N700 pin37 38 Check 13MHz IF at Z701 in out Change Z700 Che...

Page 19: ...ange G700 Change N200 COBBA NOTE IF COBBA HAS BEEN CHANGED IT IS NECESSARY TO REWRITE IMEI AND SIMLOCK DATA ALSO RX TX AND TX I Q VALUES MUST BE REALIGNED CAN T SET LOW REFERENCE AT GSM 1800 Check if Z501 is bend change if necessary Check PCN_LNA 1842 8 MHz at N600 Pin 34 If not ok ckeck Signal at Z504 503 and X501 500 Check PCN_LNA 1842 8 MHz at Z602 in out If not ok change Z602 Check UHF Oscilla...

Page 20: ... Normal Spectrum Pic2 Spectrum with broken soldering under CCONT No PCN_low reference settings in RSSI alignment Spectrum turnes to pic1 if N100 is pushed carefully with some nonmetaled item This fault can also be measured at N700 pin 15 13MHz RFCLK Pic3 Spectrum with faulty COBBA RSSI alignment is not possible Pic4 Spectrum with broken soldering under COBBA RSSI alignment is not possible Spectrum...

Page 21: ... at N600 pin4 Check PA_PCN 1747 8MHz at N600 pin 40 Check PA_PCN at N501 pin1 Check PA_PCN at N501 pin4 Check VHF 464MHz at N700 pin 8 Change N700 Check Z702 Check change G700 Change N600 Check Z601 in out Check Z603 N502 Z502 Change G702 Check PA_GSM at L500 Z500 503 X500 501 Check at N500 501 pin2 CTL_GSM 0 7 1 7Vpp CTL_PCN 0 12 0 2Vpp squarewave depends on PWR level Check PA_PCN at Z504 Ant con...

Page 22: ...REFERENCE IS CH 700 1747 8 MHZ Check 13 MHz Reference Freq output at G701 and VC AFC Pins If not ok change G701 Check 13 MHz Reference Freq at N700 Pin 15 If not ok change N700 Check 464 MHz at N700 Pin 8 If not ok change G702 Check 232 MHz at N700 Pin 46 If not ok change N700 Check 232 MHz at N600 Pin 35 37 If not ok check outputs at Z 702 change if necessary Check UHF Oscillator Freq 1979 8 MHz ...

Page 23: ...heck X400 change display assy if necessary check connections C204 to C404 C203 to C405 Also check for shorts to GND Change N200 probably D300 faulty No audio mic Check Pogo pins Change slide and try again Check internal contact springs between Pogo pins and PCB pads Check voltage at Z103 around 1 8V DC during active mic Check change V100 C180 181 117 121 Check lines to GND 1k Change N200 probably ...

Page 24: ...eason for bending the capacitor Check X200 This item must be clean Also check the soldering of the MBUS connectors Check Z100 V106 input and output Change COBBA note Rewriting of IMEI and SIMlock data is necessary after changing the COBBA If Error persists Probably MAD or PCB is defect 2 External ear problems Xear Check X200 contacts and soldering Check Z102 Check R114 V107 input and output Check ...

Page 25: ...n dust If this happens clean the flex with dustfree cloth especially in the bottom corner The Pogo pins in microphone housing get stuck If this happens change A Cover Check the internal contact springs from Pogo pins and their connector pads on the PCB Check impedance 1 8k change slide cover if necessary Check solderings of Z103 104 C106 107 132 Check signals given over MPA 1 audio test probe at V...

Page 26: ...necessary Check flex on display assy bend or dirty Change display assy if necessary Check connections in EAR_P line C204 to C404 Check connections in EAR_N line C203 to C405 Both lines 1 4V during call If one of the above fails PCB faulty Check resistance between speaker lines and GND 1 MOhm Probably MAD D300 or PCB faulty DISPLAY ASSY EAR_N EAR_P 1 Temp 1 5V 2 LCD enabled 2 8V 3 Ear P 1 3 1 9V 4 ...

Page 27: ...or springs If scrollfunction failed check R411 on PCB broken or bend Cut the RTC battery holder or change the B cover For more details see SB 012 Check connections between R409 and J400 R410 and J401 R412 and J402 If one of these connections failed swap PCB Check resistance of R407 R412 If all resistors and connections are OK probably MAD or PCB should be the reason C400 C401 C402 10nF R407 150R R...

Page 28: ...APAC J 0503073 APAC K 0503200 Euro F 0503201 Euro E 0503202 No SIM Lock Euro D 0503203 MCC MNC 00101 Euro C 0503204 MSIN 0000000001 Euro B 0503205 Euro G 0503276 Euro D Omnitel Pronto Italia 0503277 Euro D Telecom Italia Mobile 0503278 Euro D WIND 0503281 Euro G Amena 0503442 APAC Basic 0503443 APAC Basic 0503444 Euro H 0503445 Euro I 0503446 Euro D ALS 0503510 Euro A 0504406 Euro H KPN Orange 050...

Page 29: ... MCC MNC 23203 MaxMobil MSIN Euro D 0504305 MCC MNC 20408 KPN Telecom MSIN Euro H 0504330 MCC MNC 23201 Mobilkom MSIN Euro D 0504363 MCC MNC 26003 PTK Centertel MSIN Euro I 0504364 MCC MNC 26806 TMN MSIN Euro G 0504381 MCC MNC 26801 Telecel MSIN Euro G 0504405 MCC MNC 23205 Austria Connect One MSIN Euro D 0504407 MCC MNC 26002 PTC ERA gs MSIN Euro I 0504480 MCC MNC 23207 Tele ring MSIN Euro D 0504...

Page 30: ...draft version for the repair group Bernhard Kleine Frauns Draft 0 3 21 08 2000 Insert comments from repair team add General Instructions Bernhard Kleine Frauns Draft 0 5 23 08 2000 Insert comments from repair team add Faulty spectrum chart Bernhard Kleine Frauns Draft 0 7 24 08 2000 Contact Service problems description of TX power fault and SIMcard faults added Bernhard Kleine Frauns Draft 0 9 28 ...

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