Siemens Be inspired M55 Istruzioni operative
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M55/M56 Company Confidential
Copyright 2003© Siemens AG 05/03
M55/M56
Level 2.5
Repair Documentation
V 1.0
Information and Communication Mobile
Mobile Phones
V 1.0 Page 2of 28 ICM MP CCQ GRM
M55/M56 Company Confidential
Copyright 2003© Siemens AG 05/03
Table of Content
1Introduction..................................................................................................................... 3
2I/O Connector (Slim Lumberg) ........................................................................................ 4
3Battery Connector........................................................................................................... 8
4Display Connector..........................................................................................................11
5Antenna Connector ........................................................................................................14
6Card Reader ..................................................................................................................18
7Board Connector............................................................................................................21
8Light-Night LEDS ...........................................................................................................25
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M55/M56 Company Confidential
Copyright 2003© Siemens AG 05/03
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
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M55/M56 Company Confidential
Copyright 2003© Siemens AG 05/03
2 I/O Connector (Slim Lumberg)
2.1 Affected Units
2.1.1 Type: M55/M56
2.1.2 Affected IMEIs / Date Codes: All / All
2.1.3 Affected SW Versions: All
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
2.3 Priority:
¨Mandatory
þRepair
¨Optional
¨Not Yet Defined
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M55/M56 Company Confidential
Copyright 2003© Siemens AG 05/03
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.
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
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M55/M56 Company Confidential
Copyright 2003© Siemens AG 05/03
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
Figure 2: M55/M56 I/O connector placement (top view)
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M55/M56 Company Confidential
Copyright 2003© Siemens AG 05/03
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
12 EPP1 O
External microphone
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M55/M56 Company Confidential
Copyright 2003© Siemens AG 05/03
3 Battery Connector
3.1 Affected Units
3.1.1 Type: M55/M56
3.1.2 Affected IMEIs / Date Codes: All / All
3.1.3 Affected SW Versions: All
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
þRepair
¨Optional
¨Not Yet Defined
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M55/M56 Company Confidential
Copyright 2003© Siemens AG 05/03
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.
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
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M55/M56 Company Confidential
Copyright 2003© Siemens AG 05/03
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
Figure 2: M55/M56 Battery connector placement (top view)
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