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M55x
Repair Documentation
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SIEMENS M55x Repair Documentation

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Information and Communication Mobile
Mobile Phones
M55/M56
Level 2.5
Repair Documentation
V 1.0
V 1.0
M55/M56
Page 1 of 28
Company Confidential
Copyright 2003© Siemens AG
ICM MP CCQ GRM
Information and Communication Mobile
Mobile Phones
Table of Content
1
Introduction..................................................................................................................... 3
2 I/O Connector (Slim Lumberg) ........................................................................................ 4
3 Battery Connector........................................................................................................... 8
4 Display Connector..........................................................................................................11
5 Antenna Connector........................................................................................................14
6 Card Reader ..................................................................................................................18
7 Board Connector............................................................................................................21
8 Light-Night LEDS...........................................................................................................25
V 1.0
M55/M56
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Company Confidential
Copyright 2003© Siemens AG
ICM MP CCQ GRM
Information and Communication Mobile
Mobile Phones
1 Introduction
M55 product is a tripleband (GSM900, GSM1800 and GSM1900) handsets and the M56 is a dualband mobilphone (GSM850 and GSM1900).
Partnumber on IMEI label:
M55: S30880-S6300-#xxx
M56: S30880-S7600-#xxx
, while # may be any letter (A-Z) and xxx may be any number from 100, 101, 102....
This manual is intended to help you carry out repairs on level 2.5, meaning limited component repairs. The documented failure highlights should be repaired in the local workshops.
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 technical questions about the 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: st-support@klf.siemens.de
V 1.0
M55/M56
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Information and Communication Mobile
2 I/O Connector (Slim Lumberg)
2.1 Affected Units
2.1.1 Type: M55/M56
Mobile Phones
2.1.2 Affected IMEIs / Date Codes:
2.1.3 Affected SW Versions:
2.2 Fault Description
2.2.1 Fault Symptoms for customers:
- Charging problems.
- Problems with external loudspeaker or microphone when using a car kit.
- Problems with accessories connected at the I/O - connector.
- Problems with SW booting
2.2.2 Fault Symptoms on GSM Tester:
This fault cannot be detected with a GSM-Tester
All / All
All
2.3 Priority:
¨ Mandatory þ ¨ ¨
V 1.0
M55/M56
Repair Optional
Not Yet Defined
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Copyright 2003© Siemens AG
Page 4 of 28
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2.4 Repair Documentation:
2.4.1 Description of procedure:
2.4.1.1 Diagnosis:
Visually check the bottom connector. Watch for dry joints:
2.4.1.2 Repair by component change:
Use hot air blower remove defective I/O connector. Avoid excessive heat! Watch surrounding components!
Resolder new I/O connector afterwards.
Information and Communication Mobile
Mobile Phones
2.4.1.3 Repair by Software booting:
Not possible!
2.4.1.4 Test:
Retest handset after repair.
2.4.2 List of needed material:
2.4.2.1 Components:
I/O Connector M55/M56 Part-Number: L36334-Z93-C303
2.4.2.2 Jigs and Tools:
Hot Air Blower Soldering Iron
V 1.0
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Page 5 of 28
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2.4.2.3 Special tools:
None
2.4.2.4 Working materials
Desolder Wick / Braid Solder
2.4.3 Drawings
Figure 1: M55/M56 board I/O connector
Information and Communication Mobile
Mobile Phones
Figure 2: M55/M56 I/O connector placement (top view)
V 1.0
M55/M56
Copyright 2003© Siemens AG
Page 6 of 28
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Information and Communication Mobile
Table 1: M55/M56 Bottom Connector Pin Description
Pin Name IN/OUT Notes 1 POWER I/O POWER is needed for charging
batteries and for supplying the accessories
2 GND
3 TX_1 O Serial interface
4 RX_1 I Serial interface
5 CTS_1 I/O Data line for accessory bus
6 RTS_1 I/O Use as RTS in data operation
7 DCD_1 I/O Clock line for accessory bus
Use as DTC In data operation
8 AUDIO_P O External loudspeaker
9
10 AUDIO_N OI External loudspeaker
11 GND_MIC I External microphone
Mobile Phones
12 EPP1 O External microphone
V 1.0
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Copyright 2003© Siemens AG
Page 7 of 28
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Information and Communication Mobile
3 Battery Connector
3.1 Affected Units
3.1.1 Type: M55/M56
Mobile Phones
3.1.2 Affected IMEIs / Date Codes:
3.1.3 Affected SW Versions:
3.2 Fault Description
3.2.1 Fault Symptoms for customers:
Mobile does not switch on. Error message “WRONG BATTERY” on display.
3.2.2 Fault Symptoms on GSM Tester:
This fault cannot be detected with a GSM-Tester.
3.3 Priority:
¨ Mandatory
All / All
All
V 1.0
M55/M56
þ ¨ ¨
Repair Optional
Not Yet Defined
Company Confidential
Copyright 2003© Siemens AG
Page 8 of 28
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3.4 Repair Documentation:
3.4.1 Description of procedure:
3.4.1.1 Diagnosis:
Visually check the status of the Battery connector. Watch for oxidation and dry solder joints.
3.4.1.2 Repair by component change:
Use hot air blower remove defective Battery connector. Avoid excessive heat! Watch surrounding components!
Resolder new Battery connector afterwards.
Information and Communication Mobile
Mobile Phones
3.4.1.3 Repair by Software booting:
Not possible!
3.4.1.4 Test:
Retest handset after repair.
3.4.2 List of needed material:
3.4.2.1 Components:
Battery Connector M55/M56 Part-Number: L36334-Z97-C213
3.4.2.2 Jigs and Tools:
Hot Air Blower Soldering Iron
V 1.0
M55/M56
Page 9 of 28
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Copyright 2003© Siemens AG
ICM MP CCQ GRM
3.4.2.3 Special tools:
None
3.4.2.4 Working materials
Desolder Wick / Braid Soldering Iron
3.4.3 Drawings
Figure 1: M55/M56 board Battery connector
Information and Communication Mobile
Mobile Phones
Figure 2: M55/M56 Battery connector placement (top view)
V 1.0
M55/M56
Copyright 2003© Siemens AG
Page 10 of 28
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ICM MP CCQ GRM
Information and Communication Mobile
4 Display Connector
4.1 Affected Units
4.1.1 Type: M55/M56
Mobile Phones
4.1.2 Affected IMEIs / Date Codes:
4.1.3 Affected SW Versions:
4.2 Fault Description
4.2.1 Fault Symptoms for customers:
Display problems, like missing lines or columns on the LCD or display contrast problems.
4.2.2 Fault Symptoms on GSM Tester:
Display tests failed.
4.3 Priority:
¨ Mandatory
All / All
All
V 1.0
M55/M56
þ ¨ ¨
Repair Optional
Not Yet Defined
Company Confidential
Copyright 2003© Siemens AG
Page 11 of 28
ICM MP CCQ GRM
4.4 Repair Documentation:
4.4.1 Description of procedure:
4.4.1.1 Diagnosis:
Visually check the status of the Display connector. Watch for oxidation
4.4.1.2 Repair by component change:
Use hot air blower remove defective Display connector. Avoid excessive heat! Watch surrounding components!
Resolder new Display connector afterwards.
Information and Communication Mobile
Mobile Phones
4.4.1.3 Repair by Software booting:
Not possible!
4.4.1.4 Test:
Retest handset after repair.
4.4.2 List of needed material:
4.4.2.1 Components:
Display Connector M55/M56 Part-Number: L36334-Z97-C205
4.4.2.2 Jigs and Tools:
Hot Air Blower Soldering Iron
V 1.0
M55/M56
Page 12 of 28
Company Confidential
Copyright 2003© Siemens AG
ICM MP CCQ GRM
4.4.2.3 Special tools:
None
4.4.2.4 Working materials
Desolder Wick / Braid Soldering Iron
4.4.3 Drawings
Figure 1: M55/M56 board Display connector
Information and Communication Mobile
Mobile Phones
Figure 2: M55/M56 Display connector placement (top view)
V 1.0
M55/M56
Copyright 2003© Siemens AG
Page 13 of 28
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Information and Communication Mobile
A
A
5 Antenna Connector
5.1 Affected Units
5.1.1 Type: M55/M56
Mobile Phones
5.1.2 Affected IMEIs / Date Codes:
5.1.3 Affected SW Versions:
All / All
All
5.2 Fault Description
5.2.1 Fault Symptoms for customers:
Network Search No location update possible
5.2.2 Fault Symptoms on GSM Tester:
Output power problems on the external and internal antenna No location update possible
5.2.3 Component Information:
The Antenna Connector is a mechanical switch operated by the RF plug of a car kit. Normally the RF signal goes to and comes from the internal antenna. Whenever an RF plug is plugged into the antenna connector the connection to the internal antenna is opened and the connection to the external antenna socket is made. When the antenna connector is blocked without RF plug the connection to the internal antenna is also opened. See drawing below.
From Power
mplifier/
To Receiver
To/From Internal
ntenna
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Copyright 2003© Siemens AG
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5.3 Priority:
¨ Mandatory
Information and Communication Mobile
Mobile Phones
þ ¨ ¨
Repair Optional
Not Yet Defined
5.4 Repair Documentation:
5.4.1 Description of procedure:
5.4.1.1 Diagnosis:
Check the output power of the handset with the LSO test program. Especially watch the external antenna power!
5.4.1.2 Repair by component change:
Use hot air to remove defective antenna connector. Avoid excessive heat! Watch surrounding components!!
Resolder new module afterwards
5.4.1.3 Repair by Software booting:
Not possible!
5.4.1.4 Test:
Retest handset after repair.
V 1.0
M55/M56
Copyright 2003© Siemens AG
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5.4.2 List of needed material:
5.4.2.1 Components:
Antenna Connector M55/M56 Part-Number: L36334-Z93-C272
5.4.2.2 Jigs and Tools:
Hot Air Blower Soldering Iron
5.4.2.3 Special tools:
None
Information and Communication Mobile
Mobile Phones
5.4.2.4 Working materials
Desolder Wick / Braid Soldering Iron
V 1.0
M55/M56
Page 16 of 28
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Copyright 2003© Siemens AG
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5.4.3 Drawings
Figure 1: M55/M56 board Antenna connector
Information and Communication Mobile
Mobile Phones
Figure 2: M55/M56 Antenna connector placement (top view)
V 1.0
M55/M56
Page 17 of 28
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Copyright 2003© Siemens AG
ICM MP CCQ GRM
Information and Communication Mobile
6 Card Reader
6.1 Affected Units
6.1.1 Type: M55/M56
Mobile Phones
6.1.2 Affected IMEIs / Date Codes:
6.1.3 Affected SW Versions:
6.2 Fault Description
6.2.1 Fault Symptoms for customers:
Handset does not accept SIM.
6.2.2 Fault Symptoms on GSM Tester:
This fault cannot be detected with a GSM-Tester
6.3 Priority:
¨ Mandatory þ
Repair
All / All
All
V 1.0
M55/M56
¨ ¨
Optional
Not Yet Defined
Company Confidential
Copyright 2003© Siemens AG
Page 18 of 28
ICM MP CCQ GRM
6.4 Repair Documentation:
6.4.1 Description of procedure:
6.4.1.1 Diagnosis:
Visually check the Card Reader. Watch for dry joints:
6.4.1.2 Repair by component change:
Use soldering iron to remove defective component. Avoid excessive heat! Watch surrounding components!
Resolder new Card Reader afterwards.
Information and Communication Mobile
Mobile Phones
6.4.1.3 Repair by Software booting:
Not possible!
6.4.1.4 Test:
Retest handset after repair.
6.4.2 List of needed material:
6.4.2.1 Components:
Card Reader M55/M56 Part-Number: L36334-Z93-C204
6.4.2.2 Jigs and Tools:
Hot Air Blower Soldering Iron
V 1.0
M55/M56
Page 19 of 28
Company Confidential
Copyright 2003© Siemens AG
ICM MP CCQ GRM
6.4.2.3 Special tools:
None
6.4.2.4 Working materials
Desolder Wick / Braid Soldering Iron
6.4.3 Drawings
Figure 1: M55/M56 board Card Reader site
Information and Communication Mobile
Mobile Phones
Figure 2: M55/M56 Card Reader placement (top view)
V 1.0
M55/M56
Copyright 2003© Siemens AG
Page 20 of 28
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ICM MP CCQ GRM
Information and Communication Mobile
7 Board Connector
7.1 Affected Units
7.1.1 Type: M55/M56
Mobile Phones
7.1.2 Affected IMEIs / Date Codes:
7.1.3 Affected SW Versions:
7.2 Fault Description
7.2.1 Fault Symptoms for customers:
Problems with MMI function like:
Keyboard malfunction Illumination problems
7.2.2 Fault Symptoms on GSM Tester:
This fault cannot be detected with a GSM Tester
7.3 Priority:
All / All
All
V 1.0
M55/M56
¨ Mandatory þ ¨ ¨
Repair Optional
Not Yet Defined
Copyright 2003© Siemens AG
Page 21 of 28
Company Confidential
ICM MP CCQ GRM
7.4 Repair Documentation:
7.4.1 Description of procedure:
7.4.1.1 Diagnosis:
Visually check the status of the board connector. Watch for oxidation and dry solder joints.
7.4.1.2 Repair by component change:
Use soldering iron to remove defective diode. Avoid excessive heat! Watch surrounding components!!
Resolder new connector afterwards.
Information and Communication Mobile
Mobile Phones
7.4.1.3 Repair by Software booting:
Not possible!
7.4.1.4 Test:
Retest handset after repair.
7.4.2 List of needed material:
7.4.2.1 Components:
Board connector M55/M56 Part-Number: L36334-Z97-C162
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7.4.2.2 Jigs and Tools:
Hot Air Blower Soldering Iron
7.4.2.3 Special tools:
None
7.4.2.4 Working materials
Desolder Wick / Braid Soldering Iron
Information and Communication Mobile
Mobile Phones
V 1.0
M55/M56
Page 23 of 28
Company Confidential
Copyright 2003© Siemens AG
ICM MP CCQ GRM
7.4.3 Drawings
Figure 1: M55/M56 board connector side
Information and Communication Mobile
Mobile Phones
Figure 2: M55/M56 board connector placement (top view)
12 7
1 6
V 1.0
M55/M56
Page 24 of 28
Company Confidential
Copyright 2003© Siemens AG
ICM MP CCQ GRM
Information and Communication Mobile
8 Light-Night LEDS
8.1 Affected Units
8.1.1 Type: M55/M56
Mobile Phones
8.1.2 Affected IMEIs / Date Codes:
8.1.3 Affected SW Versions:
8.2 Fault Description
8.2.1 Fault Symptoms for customers:
Light Night illumination does not work.
8.2.2 Fault Symptoms on GSM Tester:
This fault cannot be detected with a GSM Tester
8.3 Priority:
¨ Mandatory þ
Repair
All / All
All
V 1.0
M55/M56
¨ ¨
Optional
Not Yet Defined
Company Confidential
Copyright 2003© Siemens AG
Page 25 of 28
ICM MP CCQ GRM
8.4 Repair Documentation:
8.4.1 Description of procedure:
8.4.1.1 Diagnosis:
Use the diode test function of a multimeter to check the status of the diode. The typical voltage drop on the diode is 1.7 V when testing the diode function with the multimeter.
8.4.1.2 Repair by component change:
Use soldering iron to remove defective diode. Avoid excessive heat! Watch surrounding components!!
Resolder new connector afterwards.
Information and Communication Mobile
Mobile Phones
8.4.1.3 Repair by Software booting:
Not possible!
8.4.1.4 Test:
Retest handset after repair.
8.4.2 List of needed material:
8.4.2.1 Components:
LIGHT NIGHT LEDS M55/M56 Part-Number: L36840-L2093-D670
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Copyright 2003© Siemens AG
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8.4.2.2 Jigs and Tools:
Hot Air Blower Soldering Iron
8.4.2.3 Special tools:
None
8.4.2.4 Working materials
Desolder Wick / Braid Soldering Iron
Information and Communication Mobile
Mobile Phones
V 1.0
M55/M56
Page 27 of 28
Company Confidential
Copyright 2003© Siemens AG
ICM MP CCQ GRM
8.4.3 Drawings
Figure 1: M55/M56 LIGHT NIGHT LEDS side
Information and Communication Mobile
Mobile Phones
Figure 2: M55/M56 LIGHT NIGHT LEDS placement (top view)
V 1.0
M55/M56
Page 28 of 28
Company Confidential
Copyright 2003© Siemens AG
ICM MP CCQ GRM
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