Page 1
Information and Communication Products
Communication Devices
S10 / S10 MMI
S10 active / S10 active MMI
Repair Documentation
Level 2.5
V 4.4
V4.4 Page 1 of 51 ICP CD ST
D. Schnoor
11/98
Page 2
Information and Communication Products
Communication Devices
Table of Contents:
1 INTRODUCTION................................................................................................................................................3
2 ANTENNA SPRING
...................................................................................................................................................................................4
3 TCXO
...................................................................................................................................................................................7
4 VCO
.................................................................................................................................................................................11
5 FUSE 1A
.................................................................................................................................................................................14
6 FUSE 0.25 A
.................................................................................................................................................................................18
7 MOLEX CONNECTOR
.................................................................................................................................................................................22
8 RINGER
.................................................................................................................................................................................26
9 CARDREADER
.................................................................................................................................................................................30
10 VOLUMESLIDER
.................................................................................................................................................................................34
11 MEMOSWITCH
.................................................................................................................................................................................37
12 ANTENNASWITCH
.................................................................................................................................................................................41
13 COIL
.................................................................................................................................................................................44
14 ANNEX / FLOWCHARTS.............................................................................................................................49
V4.4 Page 2 of 51 ICP CD ST
D. Schnoor
11/98
Page 3
Information and Communication Products
Communication Devices
1Introduction
The product familiy S1x consists of S10 (GSM-900), S11 (GSM-1800) and S12
(GSM-1900).
Two S10 versions exist:
1) The old type with part number S30880-S1200-Xxxx and
2) The new type with part number S30800-S1220-Xxxx
The partnumber can be found on the IMEI stickerof the handset.
The S10 is also available as a special outdoor version, the S10 active (S30880-S1200-Lxxx
or –Fxxx). This phone has different display and RF/Control modules, even though many of
the components are identical.
This manual is intended to help you carry out repairs on level 2.5, meaning limited
component repairs. Failure highlights are documented and should be repaired in the local
workshops.
It must be noted that all repairs have to be carried out in an environment set up according to
the ESD (Electrostatic Discharge Sensitive Devices) regulations defined in international
standards.
If you have any questions regarding the repair procedures or spare parts do not hesitate to
contact our technical support team in Kamp-Lintfort, Germany:
Tel.: +49 2842 95 4666
Fax: +49 2842 95 4302
e-mail: dominik.schnoor@klf.siemens.de
V4.4 Page 3 of 51 ICP CD ST
D. Schnoor
11/98
Page 4
Information and Communication Products
Communication Devices
2Antenna Spring
2.1Affected Units
2.1.1Type: S10 old/new and S10 active
2.1.2Affected IMEIs / Date Codes: All / All
2.1.3Affected SW-Versions: All
2.1.4Fault Code for LSO reporting: 3ANS
2.2Fault Description
2.2.1Fault Symptoms for customers:
Customers experience a low Rx sensitivity of the handset, have problems registering to the network and
making calls.
V4.4 Page 4 of 51 ICP CD ST
D. Schnoor
11/98
Page 5
Information and Communication Products
Communication Devices
2.2.2Fault Symptom on GSM-Tester:
The GSM-Tester will show a low Tx-Power only on the
internal antenna (aerial coupler measurement!).
2.3Priority:
........ Mandatory
........ Repair
........ Optional
........ Not Yet Defined
2.4Repair Documentation
2.4.1Description of procedure:
2.4.1.1Diagnosis
Visually check the status of the antenna spring. Look for a bent
contact or dry soldering joint.
2.4.1.2Repair by component change
Use soldering iron to remove defective spring.
Resolder new spring afterwards.
2.4.1.3Repair by SW-Booting
Not possible!
2.4.1.4Test
Retest handset after repair.
V4.4 Page 5 of 51 ICP CD ST
D. Schnoor
11/98
Page 6
Information and Communication Products
Communication Devices
2.4.2List of needed material
2.4.2.1Components
Antenna Spring
Part-Number: L36158-A11-C23
2.4.2.2 Jigs and Tools
Soldering Iron
2.4.2.3Special Tools
None
2.4.2.4Working materials
Desolder Wick / Braid
Solder
2.4.3Drawings
V4.4 Page 6 of 51 ICP CD ST
D. Schnoor
11/98
Figure 1: S10 / S10 active Board Antenna Spring Side
Figure 2: S10 / S10 active Antenna Spring (X900) Placement (Top View)
Page 7
Information and Communication Products
Communication Devices
3TCXO
3.1Affected Units
3.1.1Type: S10 old/new and S10 active
3.1.2Affected IMEIs / Date Codes: All / All
3.1.3Affected SW-Versions: All
3.1.4Fault Code for LSO reporting: 3TCX
3.2Fault Description
3.2.1Fault Symptoms for customers:
Network Search
Handset not logging into network
3.2.2Fault Symptom on GSM-Tester:
Frequency error in synchronized mode >90 Hz
No location update possible
V4.4 Page 7 of 51 ICP CD ST
D. Schnoor
11/98
Page 8
Information and Communication Products
Communication Devices
The TCXO (Temperature Compensated Crystal Oscillator) is responsible for generating the
13 MHz reference frequency of the handset.
If it is defective, the handset cannot synchronize to the base station anymore.
All other frequencies are derived from this 13MHz reference, its stability is vital for the
handset function.
The TCXO output frequency is determined by a DC tuning voltage applied to its VC pin. The
voltage comes from the microprocessor as a pulse number modulated digital signal.
A lowpass then converts this digital signal to a proportional DC voltage, which is then used
to fine tune the TCXO output frequency.
3.3Priority:
........ Mandatory
........ Repair
........ Optional
........ Not Yet Defined
3.4Repair Documentation
3.4.1Description of procedure:
3.4.1.1Diagnosis
Check the output frequency of the TCXO using the level-2 testing
program for S10.
V4.4 Page 8 of 51 ICP CD ST
D. Schnoor
11/98
Buffer
Lowpass
VC OUT 13MHz
SIN13MHz
(from µP)
AFC_PNM
TCXO
DC Voltage
Page 9
Information and Communication Products
Communication Devices
Switch off the „CMD in Use“ option in the config file (S6xx.CFG or
S611.INI depending on the version of the testsoftware) and restart
the program. Start the S10 test, when the program says „Check power
and phase of external antenna with your GSM-Tester“, switch the
CMD to „LOCAL“ mode and enter the „MODULE TEST“.
On the CMD display you can see the frequency error of the handset.
(Make sure that the CMD is on channel 124, power level 5!)
If the frequency error is higher than 2kHz, the TCXO has to be
replaced.
3.4.1.2Repair by component change
Use hot air blower to remove defective TCXO.
Avoid excessive heat!
Watch surrounding components!
Resolder new TCXO afterwards.
3.4.1.3Repair by SW-Booting
Not possible!
3.4.1.4Test
Retest handset after repair as described above.
The frequency error must now be < 2kHz.
3.4.2List of needed material
3.4.2.1Components
Attention! The S10 and the S10 active/new use a different TCXO.
Watch partnumbers below:
TCXO
S10 old: L36145-G300-Y16
S10 new: L36145-G300-Y17
S10 active: L36145-G300-Y17
3.4.2.2 Jigs and Tools
Hot Air Blower
Soldering Iron
V4.4 Page 9 of 51 ICP CD ST
D. Schnoor
11/98
Page 10
Information and Communication Products
Communication Devices
3.4.2.3Special Tools
None
3.4.2.4Working materials
Desolder Wick / Braid
Solder
3.4.3Drawings
V4.4 Page 10 of 51 ICP CD ST
D. Schnoor
11/98
Figure 1: S10 Board TCXO Side
Figure 2: S10 TCXO (Z601) Placement (Top View)
Page 11
Information and Communication Products
Communication Devices
4VCO
4.1Affected Units
4.1.1Type: S10 old/new and S10 active
4.1.2Affected IMEIs / Date Codes: All / All
4.1.3Affected SW-Versions: All
4.1.4Fault Code for LSO reporting: 3VCO
4.2Fault Description
4.2.1Fault Symptoms for customers:
Network Search
Handset not logging into network
Dropped Calls
4.2.2Fault Symptom on GSM-Tester:
Phase error in synchronized mode >5 deg rms
or >20 deg or >-20 deg peak.
No location update possible
The VCO (Voltage Controlled Oscillator) is responsible for generating RF frequencies of the
handset.
If it is defective, the handset cannot synchronize to the base station any more.
4.3Priority:
........ Mandatory
V4.4 Page 11 of 51 ICP CD ST
D. Schnoor
11/98
Page 12
Information and Communication Products
Communication Devices
........ Repair
........ Optional
........ Not Yet Defined
4.4Repair Documentation
4.4.1Description of procedure:
4.4.1.1Diagnosis
See symptoms above.
4.4.1.2Repair by component change
Use hot air blower to remove defective VCO.
Avoid excessive heat!
Watch surrounding components!
Resolder new VCO afterwards.
4.4.1.3Repair by SW-Booting
Not possible!
4.4.1.4Test
Retest handset after repair as described above.
The phase error must now be in the defined range.
4.4.2List of needed material
4.4.2.1Components
VCO
Part-Number: L36851-Z2022-A11
4.4.2.2 Jigs and Tools
V4.4 Page 12 of 51 ICP CD ST
D. Schnoor
11/98
Page 13
Information and Communication Products
Communication Devices
Hot Air Blower
Soldering Iron
4.4.2.3Special Tools
None
4.4.2.4Working materials
Desolder Wick / Braid
Solder
4.4.3Drawings
V4.4 Page 13 of 51 ICP CD ST
D. Schnoor
11/98
Figure 1: S10 Board VCO Side
Figure 2: S10 TCXO (Z551) Placement (Top View)
Page 14
Information and Communication Products
Communication Devices
5Fuse 1A
5.1Affected Units
5.1.1Type: S10 old/new and S10 active MMI
5.1.2Affected IMEIs / Date Codes: All / All
5.1.3Affected SW-Versions: All
5.1.4Fault Code for LSO reporting: 3FU1
5.2Fault Description
5.2.1Fault Symptoms for customers:
Battery charging not possible
5.2.2Fault Symptom on GSM-Tester:
This fault cannot be detected with a GSM-Tester
5.3Priority:
........ Mandatory
........ Repair
V4.4 Page 14 of 51 ICP CD ST
D. Schnoor
11/98
Page 15
Information and Communication Products
Communication Devices
........ Optional
........ Not Yet Defined
5.4Repair Documentation
5.4.1Description of procedure:
5.4.1.1Diagnosis
Check the status of the fuse by measuring its resistance with
a multimeter. The fuse is defective if the resitance higher than 10
ohms
5.4.1.2Repair by component change
Use soldering iron to remove defective fuse.
Avoid excessive heat!
Watch surrounding components!
Resolder new fuse afterwards.
5.4.1.3Repair by SW-Booting
Not possible!
5.4.1.4Test
Retest handset after repair as described above.
The resistance must now be close to zero.
V4.4 Page 15 of 51 ICP CD ST
D. Schnoor
11/98
Page 16
Information and Communication Products
Communication Devices
5.4.2List of needed material
5.4.2.1Components
Fuse
Part-Number: L36145-A820-Y7
5.4.2.2Jigs and Tools
Soldering Iron
5.4.2.3Special Tools
Multimeter
5.4.2.4Working materials
Desolder Wick / Braid
Solder
V4.4 Page 16 of 51 ICP CD ST
D. Schnoor
11/98
Page 17
Information and Communication Products
Communication Devices
5.4.3Drawings
V4.4 Page 17 of 51 ICP CD ST
D. Schnoor
11/98
Figure 1: S10 / S10 active MMI Board 1A Fuse Side
Figure 2: 1A Fuse (F1) Placement (Top View)
Page 18
Information and Communication Products
Communication Devices
6Fuse 0.25 A
6.1Affected Units
6.1.1Type: S10 old/new and S10 active MMI
6.1.2Affected IMEIs / Date Codes: All / All
6.1.3Affected SW-Versions: All
6.1.4Fault Code for LSO reporting: 3FU2
6.2Fault Description
6.2.1Fault Symptoms for customers:
Supplying of external accessories through the handset’s
bottom connector is not possible
6.2.2Fault Symptom on GSM-Tester:
V4.4 Page 18 of 51 ICP CD ST
D. Schnoor
11/98
Page 19
Information and Communication Products
Communication Devices
This fault cannot be detected with a GSM-Tester
6.3Priority:
........ Mandatory
........ Repair
........ Optional
........ Not Yet Defined
6.4Repair Documentation
6.4.1Description of procedure:
6.4.1.1Diagnosis
Check the status of the fuse by measuring its resistance with
a multimeter. The fuse is defective if the resitance higher than 10
ohms
6.4.1.2Repair by component change
Use soldering iron to remove defective fuse.
Avoid excessive heat!
Watch surrounding components!
Resolder new fuse afterwards.
6.4.1.3Repair by SW-Booting
Not possible!
6.4.1.4Test
Retest handset after repair as described above.
The resistance must now be close to zero.
V4.4 Page 19 of 51 ICP CD ST
D. Schnoor
11/98
Page 20
Information and Communication Products
Communication Devices
6.4.2List of needed material
6.4.2.1Components
Fuse
Part-Number: L36145-A820-Y10
6.4.2.2Jigs and Tools
Soldering Iron
6.4.2.3Special Tools
Multimeter
6.4.2.4Working materials
Desolder Wick / Braid
Solder
V4.4 Page 20 of 51 ICP CD ST
D. Schnoor
11/98
Page 21
Information and Communication Products
Communication Devices
6.4.3Drawings
V4.4 Page 21 of 51 ICP CD ST
D. Schnoor
11/98
Figure 1: S10 / S10 active MMI Board 0.25A Fuse Side
Figure 2: 0.25A Fuse (F2) Placement (Top View)
Page 22
Information and Communication Products
Communication Devices
7Molex Connector
7.1Affected Units
7.1.1Type: S10 old/new and S10 active MMI
7.1.2Affected IMEIs / Date Codes: All / All
7.1.3Affected SW-Versions: All
7.1.4 Fault Code for LSO reporting: 3MOC
V4.4 Page 22 of 51 ICP CD ST
D. Schnoor
11/98
Page 23
Information and Communication Products
Communication Devices
7.2Fault Description
7.2.1Fault Symptoms for customers:
Charging or operation in a car kit not possible.
7.2.2Fault Symptom on GSM-Tester:
Output power problems on the external antenna only.
7.3Priority:
........ Mandatory
........ Repair
........ Optional
........ Not Yet Defined
7.4Repair Documentation
7.4.1Description of procedure:
7.4.1.1Diagnosis
Visually check the bottom connector. Watch for dry joints.
7.4.1.2Repair by component change
Use hot air blower to remove defective connector.
Avoid excessive heat!
Watch surrounding components!
Resolder new connector afterwards.
Make sure that you use just very little flux, otherwise the connector
contacts can become dirty.
V4.4 Page 23 of 51 ICP CD ST
D. Schnoor
11/98
Page 24
Information and Communication Products
Communication Devices
7.4.1.3Repair by SW-Booting
Not possible!
7.4.1.4Test
Retest handset after repair.
7.4.2List of needed material
7.4.2.1Components
Molex Connector
Part-Number: L36334-Z93-C244
7.4.2.2Jigs and Tools
Hot Air Blower
Soldering Iron
7.4.2.3Special Tools
None
7.4.2.4Working materials
Desolder Wick / Braid
Solder
Flux
7.4.3Drawings
V4.4 Page 24 of 51 ICP CD ST
D. Schnoor
11/98
Figure 1: S10 / S10 active MMI Board Bottom Connector Side
Page 25
Information and Communication Products
Communication Devices
V4.4 Page 25 of 51 ICP CD ST
D. Schnoor
11/98
Figure 2: Bottom Connector Placement (Top View)
Page 26
Information and Communication Products
Communication Devices
8Ringer
8.1Affected Units
8.1.1Type: S10 old/new and S10 active MMI
8.1.2Affected IMEIs / Date Codes: All / All
8.1.3Affected SW-Versions: All
8.1.4Fault Code for LSO reporting: 3RIN
8.2Fault Description
8.2.1Fault Symptoms for customers:
No ringer tone audible or ringer tone distorted.
8.2.2Fault Symptom on GSM-Tester:
Ringer check fails.
V4.4 Page 26 of 51 ICP CD ST
D. Schnoor
11/98
Page 27
Information and Communication Products
Communication Devices
8.3Priority:
........ Mandatory
........ Repair
........ Optional
........ Not Yet Defined
8.4Repair Documentation
8.4.1Description of procedure:
8.4.1.1Diagnosis
Check ringer functionality either manually with testing program.
8.4.1.2Repair by component change
Use hot air blower remove defective ringer.
Avoid excessive heat!
Watch surrounding components, especially the display window!
To protect the display, you can also desolder the ringer with solder
wick.
Resolder new ringer afterwards.
Watch placement of ringer!
8.4.1.3Repair by SW-Booting
Not possible!
8.4.1.4Test
Retest handset after repair.
V4.4 Page 27 of 51 ICP CD ST
D. Schnoor
11/98
Page 28
Information and Communication Products
Communication Devices
8.4.2List of needed material
8.4.2.1Components
Ringer
Part-Number: L36178-Z2-C15
8.4.2.2Jigs and Tools
Hot Air Blower
Soldering Iron
8.4.2.3Special Tools
None
8.4.2.4Working materials
Desolder Wick / Braid
Solder
V4.4 Page 28 of 51 ICP CD ST
D. Schnoor
11/98
Page 29
Information and Communication Products
Communication Devices
8.4.3Drawings
V4.4 Page 29 of 51 ICP CD ST
D. Schnoor
11/98
Figure 1: S10 / S10 active MMI Board Ringer Side
Figure 2: Ringer (B1) Placement (Top View)
Page 30
Information and Communication Products
Communication Devices
9Cardreader
9.1Affected Units
9.1.1Type: S10 old/new and S10 active MMI
9.1.2Affected IMEIs / Date Codes: All / All
9.1.3Affected SW-Versions: All
9.1.4Fault Code for LSO reporting: 3REA
9.2Fault Description
9.2.1Fault Symptoms for customers:
Sim card is not accepted or properly read by
the handset.
Sim card ejection mechanism may be damaged.
V4.4 Page 30 of 51 ICP CD ST
D. Schnoor
11/98
Page 31
Information and Communication Products
Communication Devices
9.2.2Fault Symptom on GSM-Tester:
When testing with a test-simcard the above
symptoms will come up.
9.3Priority:
........ Mandatory
........ Repair
........ Optional
........ Not Yet Defined
9.4Repair Documentation
9.4.1Description of procedure:
9.4.1.1Diagnosis
Check cardreader functionality with sim card.
Attention: Watch for dry joints (especially pin 7!) or mechanical
damage.
9.4.1.2Repair by component change
Resolder dry joints.
If the cardreader is mechanically damaged use solder wick to remove
defective component.
Avoid excessive heat!
Watch surrounding components!!
Resolder new cardreader afterwards.
9.4.1.3Repair by SW-Booting
Not possible!
V4.4 Page 31 of 51 ICP CD ST
D. Schnoor
11/98
Page 32
Information and Communication Products
Communication Devices
9.4.1.4Test
Retest handset after repair.
9.4.2List of needed material
9.4.2.1Components
Cardreader
Part-Number: L36334-Z95-C994
9.4.2.2Jigs and Tools
Soldering Iron
9.4.2.3Special Tools
None
9.4.2.4Working materials
Desolder Wick / Braid
Solder
V4.4 Page 32 of 51 ICP CD ST
D. Schnoor
11/98
Page 33
Information and Communication Products
Communication Devices
9.4.3Drawings
V4.4 Page 33 of 51 ICP CD ST
D. Schnoor
11/98
Figure 1: S10 MMI Board Cardreader Side
Figure 2: Cardreader Placement (Top View)
Page 34
Information and Communication Products
Communication Devices
10Volumeslider
10.1Affected Units
10.1.1Type: S10 old/new and S10 active MMI
10.1.2Affected IMEIs / Date Codes: All / All
10.1.3Affected SW-Versions: All
10.1.4Fault Code for LSO reporting: 3VSL
10.2Fault Description
10.2.1Fault Symptoms for customers:
The volume slider does not work properly.
V4.4 Page 34 of 51 ICP CD ST
D. Schnoor
11/98
Page 35
Information and Communication Products
Communication Devices
10.2.2Fault Symptom on GSM-Tester:
During the keyboard test, the volume slider fails.
10.3Priority:
........ Mandatory
........ Repair
........ Optional
........ Not Yet Defined
10.4Repair Documentation
10.4.1Description of procedure:
10.4.1.1Diagnosis
Check volumeslider functionality either manually or with the
testing program.
Watch for dry joints or mechanical damage.
10.4.1.2Repair by component change
Use solder wick to remove defective slider.
Avoid excessive heat!
Watch surrounding components!!
Resolder new volumeslider afterwards.
10.4.1.3Repair by SW-Booting
V4.4 Page 35 of 51 ICP CD ST
D. Schnoor
11/98
Page 36
Information and Communication Products
Communication Devices
Not possible!
10.4.1.4Test
Retest handset after repair.
10.4.2List of needed material
10.4.2.1Components
Volumeslider
Part-Number: L36315-Z77-C186
10.4.2.2Jigs and Tools
Soldering Iron
10.4.2.3Special Tools
None
10.4.2.4Working materials
Desolder Wick / Braid
Solder
10.4.3Drawings
V4.4 Page 36 of 51 ICP CD ST
D. Schnoor
11/98
Figure 1: S10 / S10 active MMI Board Volumeslider Side
Page 37
Information and Communication Products
Communication Devices
11Memoswitch
11.1Affected Units
11.1.1Type: S10 old/new and S10 active MMI
V4.4 Page 37 of 51 ICP CD ST
D. Schnoor
11/98
Figure 2: Volumeslider Placement (Top View)
Page 38
Information and Communication Products
Communication Devices
11.1.2Affected IMEIs / Date Codes: All / All
11.1.3Affected SW-Versions: All
11.1.4Fault Code for LSO reporting: 3MSW
11.2Fault Description
11.2.1Fault Symptoms for customers:
The memoswitch does not work properly.
11.2.2Fault Symptom on GSM-Tester:
During the keyboard test, the memobutton fails.
11.3Priority:
........ Mandatory
........ Repair
........ Optional
........ Not Yet Defined
11.4Repair Documentation
11.4.1Description of procedure:
V4.4 Page 38 of 51 ICP CD ST
D. Schnoor
11/98
Page 39
Information and Communication Products
Communication Devices
11.4.1.1Diagnosis
Check memoswitch functionality either manually or with the
testing program.
Watch for dry joints or mechanical damage.
11.4.1.2Repair by component change
Use solder wick or hot air to remove defective switch.
Avoid excessive heat!
Watch surrounding components!!
Resolder new memoswitch afterwards.
11.4.1.3Repair by SW-Booting
Not possible!
11.4.1.4Test
Retest handset after repair.
11.4.2List of needed material
11.4.2.1Components
Attention! The S10 and the S10 new/active use a different type of
memoswitch. Watch part numbers below!
Memoswitch
S10 old Part-Number: L36315-Z77-C185
S10 new Part-Number: L36315-Z77-C192
S10 active: Part-Number: L36315-Z77-C192
11.4.2.2Jigs and Tools
Soldering Iron
Hot Air
11.4.2.3Special Tools
None
V4.4 Page 39 of 51 ICP CD ST
D. Schnoor
11/98
Page 40
Information and Communication Products
Communication Devices
11.4.2.4Working materials
Desolder Wick / Braid
Solder
11.4.3Drawings
V4.4 Page 40 of 51 ICP CD ST
D. Schnoor
11/98
Figure 1: S10 / S10 active MMI Board Memoswitch Side
Figure 2: Memoswitch (S6) Placement (Top View)
Page 41
Information and Communication Products
Communication Devices
12Antennaswitch
12.1Affected Units
12.1.1Type: S10 old/new and S10 active
12.1.2Affected IMEIs / Date Codes: All / All
12.1.3Affected SW-Versions: All
12.1.4Fault Code for LSO reporting: 3ASW
12.2Fault Description
12.2.1Fault Symptoms for customers:
No Rx sensitivity and no location update possible.
12.2.2Fault Symptom on GSM-Tester:
Handset fails with low Tx power on both or either
antenna.
No location update possible.
12.3Priority:
........ Mandatory
........ Repair
........ Optional
........ Not Yet Defined
V4.4 Page 41 of 51 ICP CD ST
D. Schnoor
11/98
Page 42
Information and Communication Products
Communication Devices
12.4Repair Documentation
12.4.1Description of procedure:
12.4.1.1Diagnosis
The antennaswitch is used to switch the Rx and Tx path between the
internal an external antenna of the handset
The switched path is determined by two digital inputs A and B (pins 1
and 5).
Check
antennaswitch
functionality either
manually or with the
testing program.
Watch for dry joints.
Use an ohmmeter to check the status of the switch:
Pin 5 against ground must be around 50 kOhms.
Pin 1 against ground must be around 1 kOhm.
If any of these resistances are significantly lower (for example pin 5
around 17 Ohms) the antennaswitch is defective and has to be
replaced.
12.4.1.2Repair by component change
Use solder wick or hot air to remove defective switch.
Avoid excessive heat!
Watch surrounding components!!
V4.4 Page 42 of 51 ICP CD ST
D. Schnoor
11/98
to/from
External
antenna
to/from
Internal
antenna
to/from
duplexer
5
1A
B
A B Switched path
1 0 External antenna
0 1 Internal antenna
Page 43
Information and Communication Products
Communication Devices
Resolder new antennaswitch afterwards.
12.4.1.3Repair by SW-Booting
Not possible!
12.4.1.4Test
Retest handset after repair.
12.4.2List of needed material
12.4.2.1Components
Antennaswitch
Part-Number: L36810-U6011-D670
12.4.2.2Jigs and Tools
Soldering Iron
Hot Air Blower
12.4.2.3Special Tools
None
12.4.2.4Working materials
Desolder Wick / Braid
Solder
V4.4 Page 43 of 51 ICP CD ST
D. Schnoor
11/98
Page 44
Information and Communication Products
Communication Devices
12.4.3Drawings
13Coil
13.1Affecte d Units
V4.4 Page 44 of 51 ICP CD ST
D. Schnoor
11/98
Figure 1: S10 / S10 active Board Antennaswitch Side
Figure 2: Antennaswitch (N950) Placement (Top View)
Page 45
Information and Communication Products
Communication Devices
13.1.1Type: S10 old/new and S10 active
13.1.2Affected IMEIs / Date Codes: All / All
13.1.3Affected SW-Versions: All
13.1.4Fault Code for LSO reporting: 3COI
13.2Fault Description
13.2.1Fault Symptoms for customers:
Loud humming noise in loudspeaker.
13.2.2Fault Symptom on GSM-Tester:
Handset fails with loud humming noise in echo loop.
13.3Priority:
........ Mandatory
........ Repair
........ Optional
........ Not Yet Defined
13.4Repair Documentation
13.4.1Description of procedure:
V4.4 Page 45 of 51 ICP CD ST
D. Schnoor
11/98
Page 46
Information and Communication Products
Communication Devices
13.4.1.1Diagnosis
The coil is used in the step up converter which is generating a
6.0 V supply voltage for the power amplifier out of the 2.8V battery
voltage.
If the coil is mechanically damaged (broken) it produces heavy
interference with the acoustical elements of the S10 resulting in a loud
humming noise in the earpiece.
A broken coil can easily be diagnosed by trying to move it with two
fingers. If it moves, the core is broken and the coil has to be
replaced.
13.4.1.2Repair by component change
Use hot air to remove defective coil.
Avoid excessive heat!
Watch surrounding components!!
Resolder new coil afterwards
13.4.1.3Repair by SW-Booting
Not possible!
13.4.1.4Test
Retest handset after repair, by checking the audio quality with the
echo loop of the testprogram.
13.4.2List of needed material
V4.4 Page 46 of 51 ICP CD ST
D. Schnoor
11/98
Page 47
Information and Communication Products
Communication Devices
13.4.2.1Components
The S10 and the S10 active use different types of coils!
Part-Number S10 old: L36151-F5273-M2
Part-Number S10 new: L36151-F5273-M3
Part-Number S10 active: L36151-F5273-M3
13.4.2.2Jigs and Tools
Soldering Iron
Hot Air Blower
13.4.2.3Special Tools
None
13.4.2.4Working materials
Desolder Wick / Braid
Solder
13.4.3Drawings
V4.4 Page 47 of 51 ICP CD ST
D. Schnoor
11/98
Figure 1: S10 / S10 active Board Coil (L1) Side
Page 48
Information and Communication Products
Communication Devices
V4.4 Page 48 of 51 ICP CD ST
D. Schnoor
11/98
Figure 2: Coil (L1) Placement (Top View)
Page 49
Information and Communication Products
Communication Devices
14ANNEX / FLOWCHARTS
14.1Tx power problems
If you experience a low output power on either antenna (internal/external) please follow the
flowchart below.
For more information about the described components please refer to the respective
chapters.
V4.4 Page 49 of 51 ICP CD ST
D. Schnoor
11/98
Page 50
Information and Communication Products
Communication Devices
Low Tx power on
external antenna only
Antenna contact on
bottom connector
o.k.?
Antenna cable o.k.
and properly
soldered?
Yes
Yes
antenna switch o.k.
(pin 1)?
Change Bottom
Connector or resolder
RF pins
No
Change/Resolder
antenna cable
No
No
Change antenna switch
Change RF/Control
module
Yes
V4.4 Page 50 of 51 ICP CD ST
D. Schnoor
11/98
Page 51
Information and Communication Products
Communication Devices
V4.4 Page 51 of 51 ICP CD ST
D. Schnoor
11/98
Low Tx power on
internal antenna only
Antenna spring
defective?
Antenna switch o.k.
(pin 5)?
No
Change antenna spring
Yes
Change antenna spring
Yes
Antenna defective?
(Retest with reference
antenna and lower case)
No
Change RF/Control
module
Yes
Change antenna/
lower case
No
Page 52
Information and Communication Products
Communication Devices
Remark: If the Tx power problem is on both antennas, it is most likely a Power Amplifier
problem which cannot be fixed locally.
V4.4 Page 52 of 51 ICP CD ST
D. Schnoor
11/98
Low Tx power on both
antennas
Antenna switch o.k.
(pin 1+5)?
Change antenna switch
No
Yes
Check Antenna Cable / Lower
Case / Antenna and Antenna
Spring
as described before.
Change RF/Control
module
Yes
Loading...