Nokia 3210 Assembly instructions

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NSE-8/9 Repairhints
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Repairhints
3210
NSE-8/9

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NSE-8/9 Repairhints
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© 2001 Nokia Mobile Phones Checked by:
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GENERAL
How to use this document
Put the QUICK REPAIR & COMPONENT FINDER layouts behind this manual.
Now you are able to follow these specifications with graphical layouts and it is easier for you to find the
components and measuring points.
Component characteristics:
Some components contain important data.
Several described steps are only practicable if you are able to reflash/realign the phone and/or rewrite
IMEI/SIMlock data 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 the PCB surely.
All replaceable µBGA-components must be renewed after removing.
Check soldering points, remove oxidated solderings (broken balls) very careful.
µBGA´s must be soldered only with NMP approved µBGA-rework machines (e.g. Zevac/OK International).
Soldering CSP´s with Hot Air Fan is strictly forbidden! – refer to General Service Bulletin 106.
Use only recommended fluxtype and always an appropriate amount of it.
PCB handling
Use appropriate cleaning materials only, do not use scratching or rubbing tools. Clean PCB carefully after
every rework and take great pains over the keyboard area. Do not make any loose wiring connections
anywhere.
If it is necessary to change any item located under the metal shields, first remove the shield, do not cut
partially or bend it.
Realign after repair
Characteristics of replacement parts are different.
To prevent additional faults after repair (e.g. low standby time, loosing network etc.) it is necessary
to retune phone values after repair.

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Introduction
IMPORTANT:
This document is intended for use by authorized NOKIA Service Centers only.
The purpose of this document is to provide some further service information for NOKIA 3210 phones.
It contains a lot of collected tips and hints to find failures and repair solutions easily.
It also will give support to inexperienced technicians.
Saving process time and improving the repair quality is the aim of using this document.
We have build it up based on fault symptoms (listed in "Contents") followed by detailed description for further
analysis.
It is to be used additionally to the service manual and other service information like Service Bulletins, for that
reason it does not contain any circuit descriptions or schematics.
All measurements are made with following equipment:
Nokia repair SW : WinTesla Version 6.43
DLL version : NSE8 version 311.02.00 / 13.03.2001
Nokia Module Jig : MJS-13
Digital multimeter : Fluke 73
Oscilloscope : Fluke PM 3380 B
Spectrum Analyzer : Advantest R 3131 with an analogue probe
RF-Generator / : Rohde & Schwarz CMU 200
GSM Tester
While every endeavour has been made to ensure the accuracy of this document, some errors may exist. If any errors
are found by the reader, NOKIA should be notified in writing, using following procedure:
Please state:
Title of the Document + Issue Number/Date of publication.
Page(s) and/or Figure(s) in error.
Please send to: Nokia GmbH
Service & Competence Center Europe
Meesmannstr.103
D-44807 Bochum / Germany
Email: [e-mail]
Copyright © Nokia Mobile Phones.
This material, including documentation and any related computer programs, is protected by copyright, controlled by Nokia Mobile
Phones. All rights are reserved. Copying, including reproducing, modifying, storing, adapting or translating, any or all of this
material requires the prior written consent of Nokia Mobile Phones. This material also contains confidential information, which
may not be disclosed to others without the prior written consent of Nokia Mobile Phones.

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Contents
PREFACE GENERAL 2
Introduction 3
CHAPTER 1 HW CHANGES IN NSE-8/9 7
-Most importand changes-summary 7
-Charging problems 8
-Notcharging 8
-Poor or no service 8
-Time and ringtone problems 8
-Phone does not switch on 9
-L102 soldering problems 9
-Keypad problems 9
-PCN PA Buffer change 9
New PCB (GD7) component & vendor changes 10
-Z700 71MHz filter – New ceramic package 10
-N500/501 Philips poweramplifier 10
-Different CCONT N100 versions implemented 10
-New COBBA N200 version implemented 10
-COBBA N200 underfilled 10
-NewGSMTXfilter 10
HW changes summary for GD7 boards 11
HW changes summary for GF boards 12
CHAPTER 2 PHONE DOES NOT SWITCH ON 14
-Does not switch on with battery (also with service battery) 14
-X504 related faults 14
-Power switch S416 faulty 14
-L102 broken soldered 14
-VB line faulty 14
-DC/DC converter V105 faulty 15
-Flash D301 / SRAM D302 related faults 15
-G701 faulty 16
-MAD D300 faulty 17
-CCONT N100 faulty 17
-B100 faulty 17
-Phone does not switch on: SectionDC/DC converter (Flowchart) 19
-Phone does not switch on: Section CCONT (Flowchart) 20
-Phone does not switch on: Flash update not possible (Flowchart) 21
CHAPTER 3 NOT CHARGING FAILURES 22
-X101/102 and X503 faulty 22
-F100 faulty 22
-R103 faulty or broken 22
-R125 to R127 connection faulty 22
-C100 broken 22
-Charging problems with ACP – 8/9 charger 22
-Not charging (Flowchart) 23

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CHAPTER 4 LOW STANDBY TIME 25
-Low standby time (Flowchart) 25
-C111, C112, C113, C115 faulty 26
CHAPTER 5 PHONE SWITCHES OFF 27
-Phone switches off (Flowchart) 27
CHAPTER 6 CONTACT SERVICE FAILURES 28
-D301 Flash / D302 SRAM - faulty or poor soldered 28
-D303 EEPROM faulty 28
-COBBA serial fail 28
-CCONT interface fail 28
-Flash update not possible 28
-Contact service: COBBA serial/parallel bus failed (Flowchart) 29
-Contact service: Eeprom tune checksum failed (Flowchart) 30
CHAPTER 7 USER INTERFACE FAULTS 31
Buzzer failed 31
-B400 / board connection broken 31
-Clocktime / Ringtone too fast or too slow - B100 faulty 31
Display faults 32
-Black lines on LCD 32
-No display function 32
-No LCD backlight 32
Keypad faults 32
-Keymat faulty 32
-Board / Dome sheet soiled 32
Internal audio faults 33
-L202/203 faulty 33
-Speaker – no, quiet or distored received audio signal 33
-Microphone – no, quiet or distored transmitted audio signal 33
-X503 – Bottom connector 33
-N200 COBBA faulty 33
-Internal audio failed (Flowchart) 34
CHAPTER 8 SIMCARD FAILURES 35
-“Insert SIMcard” 35
-SIMcard not accepted 35
-X100 Simcard reader 37
-N100, CCONT 37
-V112 faulty 37
-CCONT N100 faulty 37
-“Insert Simcard” failure (Flowchart) 37

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CHAPTER 9 RF PART FAILURES 38
-Low receiver signal strength indicator – antenna faulty 38
-No service or long time to get network coverage 38
-Z501 faulty (low RX quality / GSM 1800 38
-G701 VTCCXO faulty 38
-N600 CRFU faulty / Z600 faulty: “Failed to set high reference…” 38
-No RX in PCN mode only 38
-Z700 faulty – RX calibration fault: “failed to set high reference…” 39
-Z701 faulty – RX calibration fault: “failed to set low reference…” 39
-G700 faulty 39
-N700 faulty 39
-N200 COBBA faulty 41
-No service GSM 900 (Flowchart) 42
-No service GSM 1800 (Flowchart) 43
CHAPTER 10 TX POWER FAULTS 44
-Z500 faulty – (low TX power / GSM 900) 44
-Z504 faulty (low TX power / GSM 1800) 44
-N500 / N501 faulty (low TX power GSM 900 / 1800) 44
-TXphasefaulty 45
-TX phase faulty in high channel range (GSM 1800) 45
-Faulty spectrum COBBA faulty, CCONT and COBBA broken solderings 46
-TX failure (Flowchart) 47
Change history 48

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HW changes in NSE–8/9, 3210
MOST IMPORTANT CHANGES - SUMMARY:
Check L102 - version and soldering if phone switches off or does not switch on.
Page# 9 & 14
Clock/Time & ringtone problems - HW changes (SB 17).
Page# 8 & 16
Check R103 version if phone does not charge and check C-Cover version (Time dial removal – SB 24).
Page# 8 & 22
Charging problems with ACP-7 charger if battery is totally discharged (SB 42).
page# 6 & 22
Check if protective label is added / problems to switch on the phone (SB 11).
Page# 9 & 12
Check version of key dome sheet / keypad problems – high keypress force (SB 28 & SB 032).
Page# 7 & 32
Check version of G701 („A“ version must be changed to „B“ version) / poor or no service (SB 018).
Page# 6 & 16
Poweramplifier change and modul version GD7 (SB 030).
Page# 10
New version of 71MHz filter (ceramic package – SB 030).
Page# 10
New CCONT versions (Vs. H to I and to M)– these are not vice versa compatible (SB 030 & SB 040).
Page# 10
New COBBA versions (Vs. 3.1 to 4.1) – these are not vice versa compatible (SB 035).
Page# 10
COBBA underfilled (SB 037).
Page# 10

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CHARGING PROBLEMS
Check if R103 is broken – if resistor was broken or missing: Change N101, too.
Check C-Cover version, cut the arrow of the time dial in cover or change C-Cover if necessary.
(Service Bulletin 024).
NOT CHARGING (with ACP-7 charger only)
If battery is totally discharged – R132 must be changed to 150k / 1% tolerance and R131 must be changed to
82k / 1% tolerance resistor.
For detailed information see Service Bulletin 042.
POOR OR NO SERVICE
13MHz oscillator (G701) must be changed from version “A“ (NGK3092A) to new version “B“ (NGK3092B).
This version “A” VCTCXO is a component used for phones labeled “Made in Finland”, but only within the
IMEI range below mentioned.
First NSE-8 IMEI 448896/10/274359/9
Last NSE-8 IMEI 448896/10/422812/8
First NSE-9 IMEI 448898/10/098643/6
Last NSE-9 IMEI 448898/10/149081/8 (Service Bulletin 018)
TIME & RINGTONE PROBLEMS
In some cases the ringtone and/or the clock work too slow or too fast – in these cases C148 must be changed to 47p, J 50V and
C153 to 18p, J 50V and check 32.768kHz sine- & squarewave signals of B100.
Change oscillator if necessary (Service Bulletin 017).

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PHONE DOES NOT SWITCH ON
Check if track (R132 to L102), located at C110, is printed as upper layer and if this line is 0 Ohm. Also place an isolation label on
this track (see pictures) to protect it for short cuts to D-Cover. This is necessary in IMEI number range below 448896/20/485419/5
and 448896/10/205064/9 (Service Bulletin 011).
L102 SOLDERING PROBLEMS
Check soldering of L102 – In some cases the soldering of the coil can be broken on both sides – change if necessary.
Note the different (approved) versions of L102.
KEYPAD PROBLEMS
High key press force (eg. Navikey,2,5,8,0)
These problems occure due to process change at PCB vendor.
IMEI range: First 448903/10/729000/0
Last 449142/10/432508/8
The PCB´s can be identified by a double arrow symbol on the keypad of the PCB. In this case a new modified keydome sheet is
available to solve this problem.
(Service Bulletin 028 & 032)
PCN PA BUFFER CHANGE
The PCN PA buffer amplifier (N502) is changed from NEC (µpc2771) to RFMD (RF2367) version –
changes apply to HW versions 5.xx. Also the attenuator between the buffer and the PA (R513, R514, R515) is changed from 2dB
to 7dB to compensate the higher saturated power from the RFMD buffer (relative to the NEC buffer)
The first (oldest version with soldering problem)
The new versions for better reliability below.

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NEW PCB (GD_7), COMPONENT & VENDOR CHANGES
Z700 71MHz FILTER – NEW CERAMIC PACKAGE
If it is necessary to change this filter, please note: The old and the latest type are not compatible and cannot be changed one for
the other!
Old
New
N500 / N501 PHILIPS POWERAMPLIFIER
These are used with GD_7xx PCB only and are not compatible with Hitachi amplifiers (different prints). In case of replacement of
any poweramplifier type, it is necessary to tune the sidebands (CH1 and CH124 for GSM900 and CH512 and CH885 for GSM1800)
in addition to the mid channels (CH60 and CH700) – for tuning instructions see Service Bulletin 020.
DIFFERENT CCONT N100 VERSIONS IMPLEMENTED
1st change is CCONT version 2H to version 2I – This new version can replace the old version, but not vice versa!
2nd change is CCONT version 2I to version 2M – New version can replace the old version, but not vice versa!
For detailed information see Service Bulletin 030 & 040
NEW COBBA N200 VERSION IMPLEMENTED
New version COBBA 4.1 can replace the old version COBBA 3.1, but not vice versa!
For detailed information see Service Bulletin 035
COBBA N200 UNDERFILLED
To prevent that symptoms of dropping calls or loosing service appear - resulting from broken solderings under µBGA – underfilling
of COBBA is the solution for those cases. It has been used since IMEI 449143/10/716000/x
NOTE: IT IS NOT POSSIBLE TO REWORK OR REPLACE AN UNDERFILLED µBGA COMPONENT!
For detailed information see Service Bulletin 037
New GSM TX Filter (Z601)
The ceramic version of Z601 is changed to a new version – changes apply to HW versions 5.xx / 55.xx.
These versions can be changed against one for the other.

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OLD NEW
left side: old version / right side: new CSSP version
HW CHANGES SUMMARY FOR GD - BOARD
PCB-
Vers.
HW
changes.
Delete Add Remarks
GD7_18 54.06 =>
54.10
71MHz Filter (4511109)
R717 220Ω(1430734)
R718 220Ω(1430734)
R701 470Ω(1430744)
R606 2.7kΩ(1430832)
C749 1.5pF (2320516)
C617 68pF (2320556)
C618 68pF (2320556)
L600 180nH (3643037)
L601 180nH (3643037)
L701 330nH (3645031)
71MHz Filter (4511161)
R717 330Ω(1430740)
R718 330Ω(1430740)
R701 5.6kΩ(1430772)
R606 5.6kΩ(1430772)
C749 1.8pF (2320518)
C617 82pF (2320558)
C618 82pF (2320558)
L600 220nH (3643079)
L601 220nH (3643079)
L701 390nH (3640077)
GD7_21
GD7_18
to _21
55.10 =>
55.45
R315 0Ω(1430690)
C529 1pF (2320629)
C529 1pF (2320508)
C170 100nF (2320805)
New Philips poweramplifier
Atmel Flash IC partially in use
GD7_21 55.45 =>
55.60
D300 MAD V5 (4370489)
C145 100pF (2320560)
C320 10nF (2320620)
C149 1.5pF (2320915)
N100 CCONT 2H (4370393)
71MHz Filter (4511109)
D300 MAD V9 (4370591)
C149 1pF (2320915)
N100 CCONT 2I (4370467)
71MHz Filter (4511161)
New 71MHz Filter
New CCONT version 2I
New MAD V9 (C07)
MAD V5 HW-ID: 55.82
MAD V5 / GD7_18 HW-ID: 55.16
varistor R103 shifted
GD7_21 55.60 =>
55.61
R319 680kΩ(1430826) Change of interrupt level for
CARDDETX in BB
GD7_21 55.61 =>
55.75
N200 COBBA 3.1 (4370575) N200 COBBA 4.1 (4370643) New COBBA version 4.1
GD7_21 55.75 =>
55.76
Z601 Filt 902MHz (4511015) Z601 Filter 902MHz (4511155) New TX-Filter
GD7_21 55.76 =>
55.85
N100 CCONT2M (4370467) N100 CCONT 2M (4370719) New CCONT version 2M
GD7_21 55.85 =>
55.91
D300 MAD V9 (4370591) D300 MAD V16 (4370687)
C308 27pF (2320546)
New MAD version 16 ROM 6
GD7_25 New board with selective OSP

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HW CHANGES SUMMARY FOR GF - BOARD
PCB-Version HW-
changes
Delete Add Remarks
GF7_17 3.00 =>
3.02
N114 (4219941)
C153 27pF (2320546)
V114 (4219941)
C153 22pF (2320544)
Improvement of amplitude
of 32kHz oscillator
GF7_17 3.02 =>
3.05
C232 27pF (2320546)
C233 27pF (2320546)
C242 27pF (2320546)
C243 27pF (2320546)
To get a better TDMA-noise
uplink performance
GF7_17 3.05 =>
3.06
C148 100pF (2320560)
C153 22pF (2320544)
C148 47pF (2320552)
C153 18pF (2320604)
To improve the start up of
32kHz oscillator
GF7_18 4.00 =>
4.05
C232 27pF (2320546)
C233 27pF (2320546)
C242 27pF (2320546)
C243 27pF (2320546)
To get a better TDMA-noise
uplink performance
GF7_18 4.05 =>
4.06
C148 100pF (2320560)
C153 22pF (2320544)
C148 47pF (2320552)
C153 18pF (2320604)
To improve the start up of
32kHz oscillator
GF7_18 4.06 =>
4.10
71MHz Filter (4511109)
R717 220Ω(1430734)
R718 220Ω(1430734)
R701 47Ω(1430744)
R606 2.7kΩ(1430832)
C749 1.5pF (2320516)
C617 68pF (2320556)
C618 68pF (2320556)
L600 180nH (3643037)
L601 180nH (3643037)
L701 330nH (3645031)
71 MHz Filter (4511161)
R717 330Ω(1430740)
R718 330Ω(1430740)
R701 5.6kΩ(1430772)
R606 5.6kΩ(1430772)
C749 1.8pF (2320518)
C617 82pF (2320558)
C618 82pF (2320558)
L600 220nH (3643079)
L601 220nH (3643079)
L701 390nH (3640077)
GF7_18 4.10 =>
4.
15
D300 MAD V5 (4370489)
C145 100pF (2320560)
C320 10nF (2320620)
C149 2.2pF (2320915)
N100 CCONT 2IH (4370393)
D300 MAD V9 (4370591)
C149 2.2 pF (2320915)
N100 CCONT 2I (4370467)
New CCONT Version 2I
New MAD V9 (C07)
GF7_18 =>
GF7_20
4.06 =>
5.00
R104 10Ω(1430700)
R619 22Ω(1430710)
R605 1kΩ(1430754)
R727 1.5kΩ(1430758)
R135 330kΩ(1430816)
C307 1nF (2312401)
C613 27pF (2320546)
C205 33nF (2320783)
C122 10µF (2610003)
D300 MAD V5 (4370489)
R619 18Ω(1430708)
R727 1.8kΩ(1430760)
C205 10nF (2320805)
D300 MAD V9 (4370591)
R630 22Ω(1430710)
R320 100Ω(1430726)
R620 270Ω(1430738)
R621 270Ω(1430738)
R335 330kΩ(1430816)
R314 0Ω(1430690)
R327 1kΩ(1430754)
C122 1µF (2312401)
C318 1µF (2312401)
C245 1µF (2320481)
C332 27pF (2320546)
C650 27pF (2320546)
C320 10nF (2320620)
New MAD Version 9 (C07)

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GF7_20 5.00 =>
5.15
C145 100pF (2320560)
C320 10nF (2320620)
C149 2.2pF (2320915)
N100 CCONT 2IH (4370393)
C149 2.2pF (2320915)
N100 CCONT 2I (4370467)
New CCONT version 2I
GF7_20 5.15 =>
5.16
R508 47Ω(1430718)
R319 680KΩ(1430826)
R508 68Ω(1430722) Improvements in RF/PCN (R508)
Changed interrupt level for
CARDDETX in BB (R319)
GF7_20 5.16 =>
5.30
N200 COBBA 3.1 (4370575) N200 COBBA 4.1 (4370643) New COBBA Version 4.1
GF7_20 5.30 =>
5.31
Z601 Filter 902MHz (4511015) Z601 Filter 902MHz (4511155) New TX-Filter
GF7_20 5.31 =>
5.86
N100 CCONT 2M (4370467) N100 CCONT 2M (4370719) New CCONT version 2M
GF7_20 5.89 =>
5.90
L103 60R/100MHz (3203717) L103 470R/100MHz (3203737) L103 changed, which improves
600 KHz modulation spectrum
GF7_20 5.87 =>
5.94
R514 10Ω(1430700)
R513 470Ω(1430744)
R515 470Ω(1430744)
N502 RF Ampl. (4340263)
R514 47Ω(1430718)
N502 RF Ampl. (4340263)
New PCN PA buffer
RFMD=>
damp adaption: (R513,R514,R515)
GF7_22 New board with selective OSP

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PHONE DOES NOT SWITCH ON
At first always check mechanical appearance of battery connectors X101/X102 if bent or dirty etc. –
defect connectors could cause additional faults like “not charging” or the phone switches off intermittently.
Does not switch on with battery (nor with service battery)
Check if phone works properly in service jig.
Check if BTEMP AD value is in range of 300.
Check battery connectors X101 / X102 for broken solderings or bent spring contacts (see pictures below).
Check if phone works also after connecting LCD module in jig (short circuit in VBB line from LCD possible).
X504 related fault
Check if connector X504 has its correct position – especially after rework in its area.
If it is misplaced or bent, it could cause possible short circuits to D - Cover with throughholes.
POWER switch S416 faulty
Check mechanical condition of S416.
Check if PWRON at R413 drops to 0V during pressing power switch.
Change powerswitch S416 or continue with CCONT chapter on page#17.
L102 broken/poor soldered
Check soldering of L102.
Check resistance of L102 = 0Ω.
Resolder coil or change if necessary.
See the different versions of coil in HW changes chapter on page#9.
VB line faulty
Check battery voltage VB 2.7VDC at L102.
Check VB 2.8VDC at R132.
Check connection (0Ω) between R132/L102.
See HW changes chapter on page#9 for additional PCB protection.

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DC/DC Converter V105 faulty
Check the difference between V101 cathode 3.2VDC / anode 2.6VDC.
Check at V105 – pin 4, 5, 12, and 13: switching frequency 600kHz.
Check 1.2VDC at V105, pin 15.
Check at V105, pin3: 0V. If not, check the respective voltage dividers R131, R132, R134, R143, R144.
If all ok – change V105.
FLASH D301 / SRAM D302 related faults
Check if the current consumption is approximately 20mA.
Try to flash the phone – if this does not work go to chapter “FLASH update not possible” on page#30.
Check also near the service contacts on the PCB - If any component is missing (like on picture below) – flashing will not work!
Torn off components are the result of sliding the phone on the service battery – the contacts can be damaged, too.
NOTE: Always handle the phone in combination with the service battery with care to prevent those failures!

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Technical Services
G701 faulty
Check VCC 2.8VDC at C750 (Phone must be set in local mode).
Check control voltage (AFC) 0.1 – 2.3V at C715.
Check 13MHz reference frequency ±50 Hz (900mVpp) at R743.
NOTE:
If you have to change the oscillator, pay attention to use the correct one – also see HW changes chapter on page#8
False
Correct

CONFIDENTIAL 17 (48)
NSE-8/9 Repairhints
Customer Care Europe & Africa Version 5.0 Approved
Technical Services Training Group Date: 05.09.2001
© 2001 Nokia Mobile Phones Checked by:
CC Training Group
Approved by:
Technical Services
MAD D300 faulty
Check 32.768 kHz SLEEPCLK squarewave at C145 3Vpp.
Check 13MHz RFC at C301 900 mVpp.
Check VBB 2.8 VDC at C117.
Check SLEEPX 2.8 VDC at J340.
Check PURX 2.8 VDC at R303.
CCONT N100 faulty
Check at R413, if 3.2VDC drops to 0V during pressing powerswitch.
Check SLEEPCLK 32.768kHz squarewave at C145: 3Vpp.
Check VBB 2.8VDC at C117.
Check Vref 1.5VDC at C123.
Check PURX 2.8VDC at R303.
Check VXO 2.8 VDC at C102.

CONFIDENTIAL 18 (48)
NSE-8/9 Repairhints
Customer Care Europe & Africa Version 5.0 Approved
Technical Services Training Group Date: 05.09.2001
© 2001 Nokia Mobile Phones Checked by:
CC Training Group
Approved by:
Technical Services
B100 faulty
Check 32.768kHz sinewave at C153 – 600mVpp.
Check Sleepclock area: C147, C148, C149, C153 and R121-R124.
Check 32.768kHz squarewave at C145 – 3Vpp.

CONFIDENTIAL 19 (48)
NSE-8/9 Repairhints
Customer Care Europe & Africa Version 5.0 Approved
Technical Services Training Group Date: 05.09.2001
© 2001 Nokia Mobile Phones Checked by:
CC Training Group
Approved by:
Technical Services
PHONE DOES NOT SWITCH ON: SECTION DC/DC CONVERTER
Check VB (Battery
2.4V-3V) on L102
Check connector X101/
X102 change if bent or
soiled
Phone does not switch
on, section: DC/DC
converter
Check connection
between L102 to R132
(0 Ohm)
Swap the phone if the
connection is open
Check soldering of V105 or
change if necessary
Check voltage at
V101 anode 2.6V;
cathode 3.2V
Check soldering of V105 or
change if necessary. Also
check R102, R105, R112
DC/DC converter is ok!
continue with
section CCONT
Check 600kHz
switching frequency at
pin 4,5,12,13 of
V105
Check 1.2V operation voltage at
Pin 15 of V105
nOK
nOK
nOK nOK
nOK
OK
OK Yes
Check soldering
and resistance of L102
"0 Ohm"
Resolder or change L102
Check pin 3 from V105
on="low"status 0V
OK
nOK
OK
OK
Check V109 and the
respective voltage deviders
R131,132,134,143,144
nOK

CONFIDENTIAL 20 (48)
NSE-8/9 Repairhints
Customer Care Europe & Africa Version 5.0 Approved
Technical Services Training Group Date: 05.09.2001
© 2001 Nokia Mobile Phones Checked by:
CC Training Group
Approved by:
Technical Services
PHONE DOES NOT SWITCH ON: SECTION CCONT
( First disable Watchdog )
Phone does not switch on,
section: CCONT
Check if PWRON (3.2VDC)
drops to 0V during pressing
powerswitch at R413.
Check 32.768 kHz sinewave
(600mVpp) on C153
Check 32.768 kHz
squarewave (3Vpp)l at
C145
Check VXO (2.8VDC) at
C102
Change S416 if it is
mechanically
damaged
Change B100 if frequency
or amplitude failed
Change N100
Change N100
Check Vbb (2.8VDC) at
C117
Check C147/148/153,
R121-124
Change N100
Check 13MHz CLK
frequency
at C301
Check 13MHz at G701 Check soldering of G701 or
change if necessary
Try to flash the phone Continue with section
Flash update not possible
nOK
nOK nOK
nOK
nOK
nOK
nOK nOK
nOK
OK
OK
OK
OK
OK
Check PURX at R303
(2.8VDC) after pressing
powerswitch
Change N100
nOK
OK
OK