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S11
Service Manual
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Siemens S11, S11 MMI Service Manual

Information and Communication
Communication Devices
S11 / S11 MMI
Repair Documentation
Level 2.5
V 1.2
V1.2 Page 1 of 49 ICP CD ST
D. Schnoor
Information and Communication
Communication Devices
Table of Contents:
1 INTRODUCTION................................................................................................................................................3
2 ANTENNA SPRING
...................................................................................................................................................................................4
3 TCXO
...................................................................................................................................................................................7
4 FUSE 1A
.................................................................................................................................................................................10
5 FUSE 0.25 A
.................................................................................................................................................................................14
6 MOLEX CONNECTOR
.................................................................................................................................................................................19
7 RINGER
.................................................................................................................................................................................23
8 CARDREADER
.................................................................................................................................................................................27
9 VOLUMESLIDER
.................................................................................................................................................................................31
10 MEMOSWITCH
.................................................................................................................................................................................35
11 ANTENNASWITCH
.................................................................................................................................................................................39
12 COIL
.................................................................................................................................................................................44
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Information and Communication
Communication Devices

1Introduction

The product familiy S1x consists of S10 (GSM-900), S11 (GSM-1800) and S12 (GSM-1900). The S10 is also available as a special outdoor version, the S10 Active. 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 S11 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
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Information and Communication
Communication Devices

2Antenna Spring

2.1Affected Units

2.1.1Type: S11

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 problems registering to the network and making calls.

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:

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Information and Communication
Communication Devices
........ 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.

2.4.2List of needed material

2.4.2.1Components
Antenna Spring
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Information and Communication
Communication Devices
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

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Figure 1: S11 Board Antenna Spring Side
Figure 2: S11 Antenna Spring (X900) Placement (Top View)
Information and Communication
Communication Devices

3TCXO

3.1Affected Units

3.1.1Type: S11

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
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.
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Buffer
Lowpass
VC OUT 13MHz
SIN13MHz
(from µP)
AFC_PNM
TCXO
DC Voltage
Information and Communication
Communication Devices
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 S11. Switch off the „CMD in Use“ option in the config file (S6xx.CFG or S6xx.INI depending on the version of the testsoftware) and restart the program. Start the S11 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 number defined in the [PCN] section of the S6xx.ini, power level 0!)
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.
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Communication Devices
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
TCXO Part-Number: L36145-G300-Y17
3.4.2.2 Jigs and Tools
Hot Air Blower Soldering Iron
3.4.2.3Special Tools
None
3.4.2.4Working materials
Desolder Wick / Braid Solder
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Information and Communication
Communication Devices

3.4.3Drawings

4Fuse

1A

4.1Affecte d Units

4.1.1Type:
S11
MMI
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D. Schnoor
Figure 1: S11 Board TCXO Side
Figure 2: S11 TCXO (Z601) Placement (Top View)
Information and Communication
Communication Devices

4.1.2Affected IMEIs / Date Codes: All / All

4.1.3Affected SW-Versions: All

4.1.4Fault Code for LSO reporting: 3FU1

4.2Fault Description

4.2.1Fault Symptoms for customers:

Battery charging not possible

4.2.2Fault Symptom on GSM-Tester:

This fault cannot be detected with a GSM-Tester

4.3Priority:

........ Mandatory
........ Repair
........ Optional
........ Not Yet Defined

4.4Repair Documentation

4.4.1Description of procedure:

4.4.1.1Diagnosis
Check the status of the fuse by measuring its resistance with
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Information and Communication
Communication Devices
a multimeter. The fuse is defective if the resitance higher than 10 ohms
4.4.1.2Repair by component change
Use soldering iron to remove defective fuse. Avoid excessive heat! Watch surrounding components!
Resolder new fuse afterwards.
4.4.1.3Repair by SW-Booting
Not possible!
4.4.1.4Test
Retest handset after repair as described above. The resistance must now be close to zero.

4.4.2List of needed material

4.4.2.1Components
Fuse
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Information and Communication
Communication Devices
Part-Number: L36145-A820-Y7
4.4.2.2Jigs and Tools
Soldering Iron
4.4.2.3Special Tools
Multimeter
4.4.2.4Working materials
Desolder Wick / Braid Solder

4.4.3Drawings

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Information and Communication
Communication Devices

5Fuse 0.25 A

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Figure 1: S11 MMI Board 1A Fuse Side
Figure 2: 1A Fuse (F1) Placement (Top View)
Information and Communication
Communication Devices

5.1Affected Units

5.1.1Type: S11 MMI

5.1.2Affected IMEIs / Date Codes: All / All

5.1.3Affected SW-Versions: All

5.1.4Fault Code for LSO reporting: 3FU2

5.2Fault Description

5.2.1Fault Symptoms for customers:

Supplying of external accessories through the handset’s bottom connector is not possible

5.2.2Fault Symptom on GSM-Tester:

This fault cannot be detected with a GSM-Tester

5.3Priority:

........ Mandatory
........ Repair
........ Optional
........ Not Yet Defined
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