minor changes
Ralf HeptnerDraft0.401.10.99Forword changed
Jose MarquezDraft0.508.10.99Forword changed
Ralf HeptnerApproved1.019.10.99Forword changed
Training Team
Version 1.0 / 19.10.1999Page 2 of 38
Page 3
CONFIDENTIAL
Service & Analysis Center Europe
Training Team
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 6110, 5110 phones.
It contains a lot of collected tips and hints, to find failures and repair solutions easily.
I will also give support to the inexperienced technicians.
Saving processe 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 doesn't contain any circuit descriptions or schematics.
All measurements are made with using of following equipment:
Nokia repair SW : Wintesla Version 6.10
DLL version: NSEKM-13 version 2.41.03
Nokia Module Jig: JBS-19
Digital multimeter : Fluke 73
Oscilloscope: Hitachi V-1565; Fluke PM 3380A
Spectrum Analyzer: Advantest R3361C with an analogue probe
RF-Generator /: Rohde & Schwarz CMD 53
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:
Version 1.0 / 19.10.1999Page 3 of 38
Nokia GmbH
Service & Analysis Center Europe
Meesmannstr.103
D-44807 Bochum / Germany
Email: ams.sace-training@nokia.com
Page 4
CONFIDENTIAL
Service & Analysis Center Europe
Training Team
Contents
CHANGE HISTORY .............................................................................................................................................. 2
Check if voltage on Pin 29 drops of 700 mV during pressing the Power on button
•
Check if there is a 32.768 KHz square wave on Pin 48
•
Check if PURX Pin 54 goes up to 2.8 V DC
•
Check if VXO Pin 28 goes up to 2.8 V DC
•
B100 faulty 32,768KHz
Check 32.768 KHz ; 1 Vpp clock signal on B100
•
G600 faulty 13 MHz
Check VXO 2,8V DC on J522
•
Check 13 MHz; 1 Vpp on output
•
S001 User Interface
Check if voltage on Pin 29 drops of 700 mV during pressing the Power on button
•
Service & Analysis Center Europe
Training Team
X300 UI Connector bent
Check if voltage on Pin 29 drops of 700 mV during pressing the Power on button
•
R118 missing/ poor soldering
Check if voltage on Pin 29 drops of 700 mV during pressing the Power on button
•
D200 MAD faulty/ poor soldering
Check 32.768 kHz square wave on Pin 124 (comes from CCONT Pin 48)
•
Check 13 MHz 0n Pin 93 (comes from G600)
•
Check VBB 2.8 V DC
•
Check PURX 2.8 V DC on Pin 122 (comes from CCONT Pin 54)
•
Check SLEEPX 2.8 V DC 0n Pin 113
•
Resolder MAD complete
•
D210 FLASH faulty/ poor soldering/ empty
Check VBB 2.8 V DC on Pin 47
•
If power consumption is around 20mA try to flash the phone
•
Resolder FLASH completely
•
Version 1.0 / 19.10.1999Page 6 of
38
Page 7
CONFIDENTIAL
L103 faulty/ poor soldering
Check VB on J232
•
X101 / X102 contacts bent/ dirty
Check if VBATT and Gnd are connected
•
N550 short circuit
If there is a short circuit on VBATT, lift L550 and check again
•
If the PCB is burnt, swap the phone
•
C610; C611; C612 burnt/ short circuit
Lift the capacitor and check again
•
If the PCB is burnt, scrap the phone
•
Service & Analysis Center Europe
Training Team
Figure 2: Block diagram of switching on routine
VBATT
R103 / R104
VCHAR
BTEMP
SLEEPX
VCXO
13 MHz
G600
C213
R213
93
12, 16, ...
60
63
25 VXO 2.8V
24
113
2.8V
BB Regulator VBB 2.8V
55
CCONT
N100
54
48
124
32 KHz
square
122
2.8V
GENSIO
MAD2
D200
46
47
29
PURX
B100
32 KHz
Crystal
R118
Pwr OnX
from
UI module
Version 1.0 / 19.10.1999Page 7 of
38
Page 8
Phone switches itself off
Yes
CONFIDENTIAL
Phone intermittend switches off
Service & Analysis Center Europe
Training Team
Check if this happens
only with 5V SIM-cards
and if the phone work s
probably with 3V SIM's
Yes
Check the 5V
supply voltage on
C131 wit h an
oscilloscope
Yes
Change C131 if the
noise is higher than
350mVpp
Check X101 and
NoWrong
X102, if poor soldered,
bent or soiled
Change if old version
is used!
No
Check amplitude of
32,768KHz square
wave at pin 124 of
MAD (2,8Vpp)
No
Check amplitude of
13MHz at pi n 93 of
MAD (2,8Vpp)
No
Wrong
Wrong
Resolder, change or
clean the connector
Change or check
soldering of B100,
N100, R154, C101,
C102
Change or check
soldering of G600,
V705...
Check VBB 2,8V DC
on pin 55 of N100
Wrong
Change or check
soldering of N100,
C107
Version 1.0 / 19.10.1999Page 8 of
38
Page 9
CONFIDENTIAL
C131 10μF/10V
Check that the handset work probably with 3V SIM-cards
•
Check the 5V supply voltage at C131 (about 4,8V-5,2V,
•
Maximum noise 350mVpp overlap)
Figure 3: diagram of normal noise on C131
Service & Analysis Center Europe
Training Team
Switch itself off- contact service appears on the display
D200 MAD faulty / poor soldering
Check the amplitude of the 32,768KHz square wave on pin 124 (comes from CCONT pin 48)
•
Check the amplitude of the 13MHz clock frequency pin 93 (from G600)
•
Check VBB 2,8V DC
•
Resolder MAD
•
Internal error of MAD
•
Version 1.0 / 19.10.1999Page 9 of
38
Page 10
CONFIDENTIAL
Contact service – COBBA parallel bus failed
Contact Service
Check via WINTESLA / Testing / Selftest
which kind of selft est is fail
COBBA parallel bus
failed
Yes
Service & Analysis Center Europe
Training Team
check COBBACLK
13MHZ/ 3,2Vpp on pin
45 0f COBBA
Ok
check VBB 2,8V on
pin 27, 53 of COBBA
Ok
Check VCOBBA 2,8V
DC on pin 7, 12, 21,
25 of COBBA
Ok
Check so lder ing of
MAD or change MAD
Ok
No
No
NoNo
Check COBBA Clk on
pin 144 of MAD
Check VBB 2,8V DC
on pin 55 of N100,
CCONT
Check VCOBBA 2,8V
DC on pin 22 of N1 00,
CCONT
No
No
Change or check
soldering of MAD
check soldering or
change N100, C107
Change or check
soldering of N100,
C133
Check so lder ing of
COBBA or change
COBBA
Version 1.0 / 19.10.1999Page 10 of
38
Page 11
CONFIDENTIAL
Contact service – COBBA serial bus failed
Contact Service
Check via WINTESLA / Testing / Selftest
which kind of selftest is faulty
COBBA Serial
bus failed
Yes
Service & Analysis Center Europe
Training Team
Check VBB 2,8V
DC on pin 27, 53
of COBBA
Ok
Check VCOBBA
2,8V DC on pin 7,
12, 21, 25 of
COBBA
Ok
Check soldering
of COBBA or
change COB BA
Ok
Check soldering
of MAD or change
MAD
No
No
Check VBB 2,8V
DC on pin 55 of
N100, CCONT
Check VCOBBA
2,8V DC on pin
22 of N100
No
No
Change or check
soldering of
N100, C107
Change or check
sol dering of
N100, C133
N250 COBBA faulty / poor soldering
Check VBB 2,8V DC on pin 27, 53 from COBBA
•
Check VCOBBA 2,8V DC on pin 7,12,21,25, from COBBA
•
Check COBBACKL 13MHz 3,2Vpp pin 45 from COBBA
•
Resolder COBBA
•
Internal error of COBBA
•
Note! Rewrite SIMLOCK and IMEI entries with use of the Nokia security SW (SSSW) and make a SW-update or send this
phones to the SACE, if this procedure is not permitted to you
Version 1.0 / 19.10.1999Page 11 of
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Page 12
CONFIDENTIAL
Contact service – Eeprom tune checksum fail
Contact Service
Check via WINTESLA / Testing / Selft est
which kind of selftest is faulty
EEPROM tune
checksum f ail
Yes
Service & Analysis Center Europe
Training Team
Check via WINTESLA >
product i nf or mation, i f
any phon e data, like:
IM EI, product code,
PSN, etc. is corrupted
change the EEPROM if
it is permitted to y ou, to
rewrite the IMEI
Reset t he phone (don't
No
YesNo
use the full fact or y set if
it is not permitted to you
to rewrite the IMEI)
EEPROM
internal fault
send this phones to the
SACE Bochum
if it is not permitted to
you to r ewrit e t he IMEI
refer to
Service Bulletin
general 26
Phone is Ok, if
CONTACT SERVICE
dissapears
D240 Eeprom faulty
Check via wintesla if IMEI or product data are corrupted
•
Don’t use the "Full factory set" via wintesla, otherwise the IMEI will
•
Change to question marks
Change the Eeprom if it's permitted for you and write all ID data (IMEI, product code…) back
•
If you aren't allowed to change the Eeprom and the IMEI is missing, write a note with a little
•
Comment, and send it together with the phone to the SACE
Note! Rewrite SIMLOCK and IMEI entries with use of the Nokia security SW (SSSW) and make a SW-update or send this
phones to the SACE, if this procedure is not permitted to you
Version 1.0 / 19.10.1999Page 12 of
38
Page 13
Contact service – PPM validity
Contact Service
Check via WINTESL A / Tes ting / S elfte st
whic h kind of selftest is faulty
CONFIDENTIAL
PPM validity fail
Yes
try to flash the phone
oK
Service & Analysis Center Europe
Training Team
phone is Ok, if
CONTACT
SERVICE dissapears
after flashing
not oK
check soldering or
change D200,
FLASH
SW / D210 Flash faulty / poor soldering
Check if the fault disappear after update the handset
•
Resolder D210 Flash
•
Internal error of Flash
•
Version 1.0 / 19.10.1999Page 13 of
38
Page 14
CONFIDENTIAL
Clock time or user setting problems
Clock time problems / wrong ringingtone speed
check 32,768KHz
clock frequency on
pin 48 of N100,
CCONT
Check soldering or
change B100, R 154 ,
C101, C102, N100
Clock time / ringing tone is to fast or to slowly
Check that the sleepclk is 32.768KHz square wave on pin 48 CCONT
•
Check the crystal B100, R154, C101, C102, N100
•
Service & Analysis Center Europe
Training Team
Loose of clock time after removal of battery
Backupbattery
keeps the clock
running for min.
10 minutes
No
Check the DC
voltage 2,8V -
3,3V on G100,
backupbattery
No
Check the
springcontacts if
they are bent or
soiled
No
Change G100,
backupbattery
Yes
correct or clean
the contacts
G100, Loose of clock time, if the battery is empty or removed for few minutes
G100 Back up battery faulty / disconnected
•
Check the voltage 2,8V-3,3V over the back up battery connected to the PCB in the service modus
•
Check the spring contacts
•
Clean the back up battery contacts on the board
•
Version 1.0 / 19.10.1999Page 14 of
38
Page 15
CONFIDENTIAL
Clock freeze after switching on the phone
Yes
Service & Analysis Center Europe
Training Team
Check the
CCONTINT
impulse on pin
52 of N100,
CCONT
Ok
Check the
CCONTINT
impulse on pin
123 of D200,
MAD
No
No
resolder
CCONT or
change if
solderings are
Ok
resolder MAD
or change if
solderings are
Ok
N100, Clock will freeze after switching on
CCONTINT short circuit / break
•
Check the CCONTINT impulse on pin 52 CCONT or pin 123 MAD (see the diagram below)
•
Check pin 52 CCONT pin 123 MAD short circuit or break
•
Figure 4: CCONT INT imp uls e on CCONT pin 52
Version 1.0 / 19.10.1999Page 15 of
38
Page 16
CONFIDENTIAL
The phone hangs up, after entering the PIN-code
Phone SW hangs up after entering the PIN code
Yes
Service & Analysis Center Europe
Training Team
check the
amplitude of the
32,768 KHz clock /
2,8Vpp on pin 124
of D200, MAD
Ok
check the
amplitude of the
13MHz c loc k on
pin 93 of D200,
MAD
Ok
check VBB 2,8V
DC on pin 59 of
N100, CCONT
Ok
check solder of
MAD or
change if
neccessary
resolder CCONT
No
No
NoNo
or change if
solderings are Ok.
check G600,
change if
neccessary
check C140,
change if
neccessary
check solder of
CCONT or
change if
neccessary
D200 MAD faulty / poor soldering
Check the amplitude of the 32,768KHz square wave on pin 124 (comes from CCONT pin 48)
•
Check the amplitude of the 13MHz clock frequency pin 93 (from G600)
•
Check VBB 2,8V DC
•
Resolder MAD
•
Internal error of MAD
•
Version 1.0 / 19.10.1999Page 16 of
38
Page 17
Not charging
CONFIDENTIAL
Service & Analysis Center Europe
Training Team
no confirmation / error message / beep is coming from phone, if charger is
check VCH on pin 1,
16 of N101, CHAPS
Ok
check solderings of
N101 or change if
necessary
pluged in
Check X100, F101,
NoOk
L104, L105 if
connection to charger
is open
Phone doesn't stop charging
Not charging (1)
check V100, C103 if
VCH is short circuited
Do the battery
management
calibrati on
check the power
consumtion of the
phone (1-5mA if
phone is swi tched on
without SIM & lights)
No
check DC voltage on
pin 2 of D200, MAD,
switches from 2,8V to
0V, if battery is fully
charged
Ok
section not charging
No
consumtion is higher,
Ok
No
refer to section low
resolder or change
if any A/D value is
wrong, refer to
(2)
If th e power
standby ti me
MAD if necessary
Yes
Yes
not charging (2)
low standby ti me
Version 1.0 / 19.10.1999Page 17 of
38
Page 18
CONFIDENTIAL
Service & Analysis Center Europe
Training Team
failed
Charger voltage failed
Battery size
failed
error message ("not charging") / beep is coming fr om phone, if charger is pluged in
Not charging (2)
check DC voltage on pin
Do the battery
management calibration
check DC voltage on pin
Yes
60 of N100/ CCONT
if charger i s pluged in
nominal VCH 1:10 (0,8V)
No
check F101, L104, V100,
C103 and voltage
devider R103, R104
check DC Voltage on pin
YesOk
62 of N100, CCONT
9 of N101, CHAPS if
Ok
charger is pluged in
resolder or change D200
resolder or change N100
Ok
Ok
try the calibrating again
resolder or change N100
(2,8V)
No
if necessary
if necessary
if necessary
Try charging, i f no A/D
Ok
valiue was wrong
Battery temperature
failed
Charge current
failed
check battery, X101,
voltage devider R120,
check DC voltage on pin
Yes
Yes
63 of N100, CCONT
check battery, X102,
voltage devider R120,
check DC voltage on pin
No
try the calibrating again
R122
No
R122
2 of N100, CCONT
No
check N101, R131try the calibrating again
Ok
resolder or change N100
Ok
try the calibrating again
Ok
resolder or change N100
Ok
Ok
if necessary
if necessary
Version 1.0 / 19.10.1999Page 18 of
38
Page 19
F101 faulty
Check resistance of F101 (0Ω)
•
V100 faulty
Check resistance of V100 (50KΩ in circuit)
•
L104 faulty Vcharge
Check resistance of L104 (0Ω)
•
L105 faulty Charge ground
Check resistance of L105 (0Ω)
•
C103 faulty short circuit on Vcharge
Check resistance of C103 (50KΩ in circuit)
•
CONFIDENTIAL
Service & Analysis Center Europe
Training Team
N101 faulty/ poor soldering
Check PWMOUT on Pin 7 (1 Hz standard / 32Hz fast)
•
Check if CHARLIM on Pin 9 is 2.8V DC
•
N100 faulty/ poor soldering
Change if any A/D value is out of limit but the DC voltages are ok.
•
If DC voltages are wrong, check corresponding voltage dividers
•
Check PWMOUT on Pin 56 (1 Hz standard / 32 Hz fast)
•
X100 faulty/ poor soldering
Check connection of Vcharge; charge ground; charge control
•
X101 BSI; X102 BTEMP
Check connection if battery size or battery temp A/D are out
•
of limit
V102 faulty
Check if there is a short circuit in charge control line
•
Energy management Calibration
If charging stops to early
•
If message "not charging appears on LCD"
•
If any part in charging circuit has changed
•
If any A/D value is out of limit, check the corresponding
•
DC Voltages on CCONT
Version 1.0 / 19.10.1999Page 19 of
38
Page 20
Figure 5: Block diagram of charging concept
CONFIDENTIAL
Service & Analysis Center Europe
Training Team
X101
Battery connector
1
2
BSI Resistor (Inside of Battery)
2.2K .... 18K : NiCd Battery
20K .... 24K : Service Battery
27K .... 51K : 4.1V Lithium Battery
68K .... 91K : 4.2V Lithium Battery
X100
Sysrem Connector
1
3
2
14
4
5
X102
Battery Connector
BTEMP
BGND
T
47K NTC
BTEMP Resistor
inside of Battery
BSI
BVOLT
L103
F101
L105
Charger Ctrl.
VREF
V100
R120
L104
C103
R122
Current
Shunt
R104
R103
R116
VCH
VB
VB
R131
Chargedet.
1,16
2 ICHAR
8,12,16,21,
27,28,57
63
12
5
2,3,4
6,11,13
14,15
N101
CHAPS
710
VBACK
PWMOUT 1Hz / 32Hz
VCHAR
60 56 46 62
N100
CCONT
BB and RF
Regulators
8
9
2.5V DC min
DataClk 49
DataSelX 50
DataI/O 51
CCONTInt 52
Purx 54
C104
CHARLIM
G100
RTC Battery
Battery Type (BSI)
VBB
2
MCUGENOUT
119 DataSCLK
116 GenCCONTCSX
118 GenSDIO
123 CCONTInt
122 Purx
95
CardDetX
R120
R122
D200
MAD2
Version 1.0 / 19.10.1999Page 20 of
38
Page 21
Low Stand by time
Low standby time
(battery is Ok)
CONFIDENTIAL
Service & Analysis Center Europe
Training Team
check powerconsum t ion
of the phone:
Off state > 0- 1mA
sleep mode > 1-5mA
Call mode >
200-500mA (lev el 19/5)
Ok
check the charging
circui t, use battery
management
calibration
Ok
check if sleep mode
function w orks
propably
Ok
Calibrate RX and TX
values of t he phone
No
change N550, if
consumtion is Ok
refer to section "not
No
charging (2)" if any
A/D value is wrong
resolder or cha nge
No
D200, MAD if
refer to section
No
transmit ter failure
Ok
lift L560lift L103
Ok
necessary
receiver /
NoNo
Ok
change N100,
CCONT if
consumtion is Ok
section
"not charging (2)"
section "receiver /
transmit ter failure"
check C142,
C610-12, C105,
N101, change if
necessary
Note: The st andby time depends also on the network side, like: PRP (paging repeat
period time ), signa l strength (min -98dBm), location updates
and on the user ha ndling of the phone (lights on or of, memory activities, games etc. )
SIM card -DATA (Pin 43), -Clock 3,25MHz (Pin 38), -Reset (Pin 42) and VSIM 3V/5V DC
•
(Pin 36) depends on SIM card
V104
Change component if SIM -DATA, -Clock, -Reset or VSIM is short circuited to
•
ground
Version 1.0 / 19.10.1999Page 30 of
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Page 31
CONFIDENTIAL
SIM card not accepted, SIM LOCK failure
SIM card not accepted (SIM LOCK active)
SIM card not
accepted
appears on
LCD after
entering the
PIN code.
Yes
Service & Analysis Center Europe
Training Team
open
WINTEASLA
and activ at e
quick /RF-info
in normal
mode!
compare the data
entries MCC+M NC
YesOk
with the listed
entries of the
respective product
code
not oK
SIM LOCK is oK!
correct the SIM
LOCK settings
with use of the
Nokia security S W
(SSSW) or send
those phones to
the SACE
if SIMLOCK is not
active, but
phone still doesn't
accept SIM,
change N250,
COBBA
!!!Take note!!!
if the M sin data field is
closed to any special
IMSI number range,
the operator is
ONLY
allowed to open the
SIM LOCK!!!
correct the SIM LOC K
settings with use of
the Nokia secur ity SW
(SSSW) after
changing of COBBA
or send those phones
to the SACE
Version 1.0 / 19.10.1999Page 31 of
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Page 32
CONFIDENTIAL
Service & Analysis Center Europe
Training Team
If message "SIM Card not accepted" appears on LCD after entering PIN code,
•
a SIM LOCK is activated in this phone.
Initialize phone into normal mode and activate Quick/ RF-info (WINTESLA)
•
compare the SIM LOCK entries with the below listed references
If MCC+MNC or status doesn't match to the listed entries, correct the SIMLOCK entries with use of the Nokia security
•
SW (SSSW) or send this phones to the SACE if it is not permitted to you
N100, CCONT
Refer to insert SIM Card procedure
•
N250, COBBA
Change COBBA if all SIM LOCK entries and SIM card signals
•
from CCONT are ok
Note! Rewrite SIMLOCK and IMEI entries with use of the Nokia security SW (SSSW) and make a SW-update
or send this phones to the SACE, if this procedure is not permitted to you
501561Plus
501562SpainAirtel214010
501563SpainMovistar214070
501791HungaryWestel blue216300
501792HungaryWestel green216300
501875PolandERA green260020
501876PolandERA blue260020
501878SpainMovistar Activa21407?61???????
501880SpainAirtel blue214010
502053AustriaMax Mobil blue232030
502113SpainAirtel Continua214018:????????
502147HungaryPannon blue216010
502148HungaryPannon green216010
502149FranceSFR blue20810????????
502162AustriaMax Mobil blue WLL232030
502163AustriaMax Mobile Green WLL232030
502164SpainAirtel blue WLL214010
502165SpainMovistar blue WLL214070
502166SpainAirtel green WLL214010
502167SpainMovistar green WLL214070
502430FranceSFR blue20810????????
?PolandPolkomtel2600100
502599Dubai(Dubai)655100
502636TurkeyTurkcell28601??????????
502637TurkeyTelsim28602??????????
502972SpainMovistar2140;??????????
502973SpainMovistar green WLL2140;??????????
502974SpainMovistar blue WLL2140;??????????
503143GreecePanafon2020590
Service & Analysis Center Europe
MCC+MNC
Training Team
Version 1.0 / 19.10.1999Page 34 of
38
Page 35
Low receiver signal strength indicator
Antenna faulty / wrong - Tuning
Check the code of the antenna label (see below)
•
Check the receiver signal indicator with a new antenna
•
Retune the handset
•
CONFIDENTIAL
Service & Analysis Center Europe
Training Team
NMP CODEDESCRIPTION
TYPE CODE
NOTE
(Stamped in helix antenna)
0660178ANTENNA FXD
890-960/1710-1880 MHz
0660160ANTENNA FIXED HELIX
890-960 MHz
0660145HELIX 1710-1880 MHz PCNSPNxxxxxNSK-1/3*
DGPxxxxx NSM-1*
SGSxxxxxNSE-1/3*
No service
13MHz VCTCXO G600 out of range
Check the 13MHz reference frequency pin 21 N620 (PLUSSA) or pin 2 from G600, set first the module in service
•
mode, a frequency error of +-50Hz can create deviation of the IF frequencies
X560 Antenna connector / switch mechanical faulty
Check the handset with the external antenna
•
Check the resistance "0Ohm" from the internal antenna pad to the "in" pin of X560
•
Version 1.0 / 19.10.1999Page 35 of
38
Page 36
CONFIDENTIAL
B100 32,768KHz crystal
Check the amplitude of the 32,768KHz square wave on pin 48 of CCONT
•
Figure 12: diagram of N100 pin 48 32,768KHz square wave
Service & Analysis Center Europe
Training Team
No RX (no Rx calibration…RSSI reading fixed value)
D200, MAD / N250, COBBA faulty
Check if the 13MHz IF frequency on pin 22,23 COBBA change the amplitude, if the generator frequency level has
•
changed
Check if the RXC impulse on pin 53 N620 (PLUSSA) change the amplitude, if the generator frequency level has
•
changed
Change MAD
•
Change COBBA
•
Note! Rewrite SIMLOCK and IMEI entries with use of the Nokia security SW (SSSW) and make a SW-update or send this
phones to the SACE, if this procedure is not permitted to you
No RX (no Rx calibration…RSSI reading high difference)
Z550 Duplexer faulty / poor soldering
Check the rx signal on the ANT pin and on the output
•
Check that the attenuation between duplexer "in" and "out" is about 2dbm
•
Resolder the duplexer or change it
•
No RX (no Rx calibration…RSSI reading highest value)
Z621 / Z620 faulty / poor soldering
Check the 71MHz IF frequency on Z621
•
Check the components C505, C507, L500, L503 if the signal amplitude is different between the two lines
•
check the soldering of Z621 or change it
•
check the 13MHz IF frequency on Z620, about 3dbm attenuation between signal-in and signal-out
•
check the soldering of Z620 or change it
•
Version 1.0 / 19.10.1999Page 36 of
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CONFIDENTIAL
No RX (no Rx calibration…RSSI reading highest value)
N620 PLUSSA faulty / poor soldering
check the UHF- and VHF oscillator frequency
•
check the control-lines for the PLL, pin 54, 55, 56 of N620 (see the diagrams below)
•
check the UHF-VC on pin 27 N620 1,9V-3.2V depending of the channel
•
check the VHF-VC on pin 18 N620 2,6V
•
check the 5V VCP supply voltage drop over R640 (normal 0,2V)
•
change the N620 PLUSSA
•
Figure 13: diagram of SCLK
Service & Analysis Center Europe
Training Team
Figure 14: diagram of SDATA
Figure 15: diagram of SENA1
Version 1.0 / 19.10.1999Page 37 of
38
Page 38
CONFIDENTIAL
Call breaks / No service
G550 UHF Oscillator out of range or high spurious emission
check the UHF frequency on G530 for high spurious or deviation
•
check the UHF-VC on pin 27 N620 1,9V-3.2V depending on the channel
•
check the 5V VCP supply voltage on pin 17, 28 of N620 PLUSSA or pin 32 of CCONT
•
check R533 47Kohm, C535 1,5nF
•
No Call / service O.K.
N100 CCONT faulty
check if the "Insert SIM-card" message appear sometime on the display
•
check if it's possible to read the saved phone numbers of the SIM-card
•
Resolder CCONT
•
Change CCONT
•
No or to low TX – Power
Service & Analysis Center Europe
Training Team
N550 / X 560 faulty
Check the power supply Vbat N550 pin 2, 4, 6, 12, 13, 14
•
Check the input power on pin 8 N550 (nominal 0dbm)
•
Check the output power on pin 12, 13, 14 of N550
•
Check the TX-Power control on pin 9 of N550 (1Vpp-1, 5Vpp / 0,4..V - 0,9..V DC depend of the power-level)
•
(see the diagram below)
Change the PA if no or to low gain comes out
•
Check the TX-Power on the antenna IN/OUT pads from X 560
•
Check the attenuation of the connector
•
Figure 16: Diagram of TX-control
Version 1.0 / 19.10.1999Page 38 of
38
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