SIEMENS M55x Repair Documentation
Information and Communication Mobile
Mobile Phones
M55/M56
Level 2.5
Repair Documentation
V 1.0
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Page 1 of 28 |
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ICM MP CCQ GRM |
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M55/M56 |
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Company Confidential |
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05/03 |
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Copyright 2003© Siemens AG |
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Information and Communication Mobile
Mobile Phones
Table of Content |
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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 |
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Page 2 of 28 |
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ICM MP CCQ GRM |
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M55/M56 |
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Company Confidential |
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05/03 |
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Copyright 2003© Siemens AG |
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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
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Page 3 of 28 |
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ICM MP CCQ GRM |
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M55/M56 |
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Company Confidential |
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05/03 |
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Copyright 2003© Siemens AG |
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Information and Communication Mobile
Mobile Phones
2I/O Connector (Slim Lumberg)
2.1Affected Units
2.1.1 |
Type: |
M55/M56 |
2.1.2 Affected IMEIs / Date Codes: |
All / All |
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2.1.3 |
Affected SW Versions: |
All |
2.2 Fault Description
2.2.1Fault 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
2.2.2Fault Symptoms on GSM Tester:
This fault cannot be detected with a GSM-Tester
2.3 Priority:
Mandatory
Repair
Optional
Not Yet Defined
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Page 4 of 28 |
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ICM MP CCQ GRM |
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M55/M56 |
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Company Confidential |
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05/03 |
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Copyright 2003© Siemens AG |
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Information and Communication Mobile
Mobile Phones
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.
2.4.1.3Repair by Software booting:
Not possible!
2.4.1.4Test:
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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Page 5 of 28 |
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ICM MP CCQ GRM |
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M55/M56 |
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Company Confidential |
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05/03 |
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Copyright 2003© Siemens AG |
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Information and Communication Mobile
Mobile Phones
2.4.2.3Special tools:
None
2.4.2.4Working 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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Page 6 of 28 |
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ICM MP CCQ GRM |
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M55/M56 |
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Company Confidential |
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05/03 |
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Copyright 2003© Siemens AG |
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Information and Communication Mobile
Mobile Phones
Table 1: M55/M56 Bottom Connector Pin Description
Pin |
Name |
IN/OUT |
Notes |
1 |
POWER |
I/O |
POWER is needed for charging |
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batteries and for supplying the |
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accessories |
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2 |
GND |
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3 |
TX_1 |
O |
Serial interface |
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4 |
RX_1 |
I |
Serial interface |
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5 |
CTS_1 |
I/O |
Data line for accessory bus |
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6 |
RTS_1 |
I/O |
Use as RTS in data operation |
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7 |
DCD_1 |
I/O |
Clock line for accessory bus |
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Use as DTC In data operation |
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8 |
AUDIO_P |
O |
External loudspeaker |
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9 |
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10 |
AUDIO_N |
OI |
External loudspeaker |
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11 |
GND_MIC |
I |
External microphone |
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12 |
EPP1 |
O |
External microphone |
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V 1.0 |
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Page 7 of 28 |
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ICM MP CCQ GRM |
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M55/M56 |
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Company Confidential |
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05/03 |
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Copyright 2003© Siemens AG |
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Information and Communication Mobile
Mobile Phones
3 Battery Connector
3.1 |
Affected Units |
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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 |
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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
Repair
Optional
Not Yet Defined
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V 1.0 |
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Page 8 of 28 |
|
ICM MP CCQ GRM |
|
M55/M56 |
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Company Confidential |
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05/03 |
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Copyright 2003© Siemens AG |
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Information and Communication Mobile
Mobile Phones
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.
3.4.1.3Repair by Software booting:
Not possible!
3.4.1.4Test:
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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V 1.0 |
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Page 9 of 28 |
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ICM MP CCQ GRM |
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M55/M56 |
|
Company Confidential |
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05/03 |
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Copyright 2003© Siemens AG |
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