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S10 active MMI
Service Manual
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Siemens S10 active MMI, S10 active, S10 MMI, S10 Service Manual

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
11/98
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
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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
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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.
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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
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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
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Figure 1: S10 / S10 active Board Antenna Spring Side
Figure 2: S10 / S10 active Antenna Spring (X900) Placement (Top View)
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
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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
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Buffer
Lowpass
VC OUT 13MHz
SIN13MHz
(from µP)
AFC_PNM
TCXO
DC Voltage
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
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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
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Figure 1: S10 Board TCXO Side
Figure 2: S10 TCXO (Z601) Placement (Top View)
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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
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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
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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
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Figure 1: S10 Board VCO Side
Figure 2: S10 TCXO (Z551) Placement (Top View)
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
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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
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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
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