Related Manuals for Siemens ST55
Summary of Contents for Siemens ST55
- Page 1 Com ST55 Level 2.5 Repair Documentation V 1.0 V 1.1 Page COM MD CC GRM T Company Confidential ST55 01/05 Copyright 2003© Siemens AG...
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Page 2: Table Of Contents
SIM Connector (J101)......................17 MIC Connector (JP201) ....................20 Battery Connector (JP301) ....................23 IO Connector (JP401)....................26 Earpiece (JP203)......................29 Joystick (SW401)......................32 Keypad Connector (JP402) ..................35 FUSE (F401) ........................38 V 1.1 Page COM MD CC GRM T Company Confidential ST55 01/05 Copyright 2003© Siemens AG... -
Page 3: Introduction
Com 1 Introduction ST55 product family, consists of 1 tripleband (GSM900, GSM1800 and GSM1900) handset Partnumber on IMEI label: ST55: S36880-S6850-T100 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. -
Page 4: Repair Location Code
Camera Connector 9 JP203 Receiver 4 JP202 Speaker Spring 10 SW401 Joystick 5 J101 SIM Connector 11 JP402 Keypad Connector 6 JP201 MIC Connector V 1.1 Page COM MD CC GRM T Company Confidential ST55 01/05 Copyright 2003© Siemens AG... -
Page 5: Rtc (Rtc Battery)
45minutes after the main battery of phone is taken off. Besides, the RTC battery will always be charged from the PMS when the main battery is inside the phone. See drawing below. PMS: Power Management System V 1.1 Page COM MD CC GRM T Company Confidential ST55 01/05 Copyright 2003© Siemens AG... - Page 6 Not possible! Test Retest handset after repair procedure as described above List of needed material Components ST55 RTC battery Part Number: L36385-F505-X Jigs and Tools Hot Air Blower (350°C ~ 400 °C) Soldering Iron (350°C ± 20 °C) Special Tools:...
- Page 7 Com Drawings Figure 1.1: ST55 Board RTC Side (Top View) ― Figure 1.2: ST55 Board RTC Placement (RTC) (Top View) V 1.1 Page COM MD CC GRM T Company Confidential ST55 01/05 Copyright 2003© Siemens AG...
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Page 8: Lcd Connector (J503)
There is 11V power supplied to the anode of backlight LED via D303. LCDlight - connects the cathode of backlight LED and the resister that can limit the current passing through the LED. V 1.1 Page COM MD CC GRM T Company Confidential ST55 01/05 Copyright 2003© Siemens AG... - Page 9 Test After repair procedure as described above, power on handset and check the display. List of needed material Components ST55 LCD Connector Part Number: L36334-Z97-C311 Jigs and Tools Hot Air Blower (350°C ~ 400 °C) Soldering Iron (350°C ± 20 °C)
- Page 10 Com Drawings Figure 2.1: ST55 Board LCD Connector Side (Top View) Figure 2.2: ST55 Board LCD Connector Placement (J503) (Top View) V 1.1 Page COM MD CC GRM T Company Confidential ST55 01/05 Copyright 2003© Siemens AG...
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Page 11: Camera Connector (J504)
The camera connector is a 26-pins contact type socket. It had 2 kinds of working voltage (2.8 and 2.5V), 13MHz-working frequency. Using the YUV data format. V 1.1 Page COM MD CC GRM T Company Confidential ST55 01/05 Copyright 2003© Siemens AG... - Page 12 After repair procedure as described above, power on handset and check the camera function. List of needed material Components ST55 Camera Connector Part Number: L36334-Z97-C323 Jigs and Tools Hot Air Blower (350°C ~ 400 °C) (350~400 °C) Soldering Iron (350°C ± 20 °C)
- Page 13 Com Drawings Figure 3.1: ST55 Board Camera Connector Side (Top View) Figure 3.2: ST55 Board Camera Connector Placement (J504) (Top View) V 1.1 Page COM MD CC GRM T Company Confidential ST55 01/05 Copyright 2003© Siemens AG...
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Page 14: Speaker Spring (Jp202)
The speaker spring connector is used to contact a 8ohm speaker. It provides two contact trace for the melody signal from the Melody IC. See drawing below. V 1.1 Page COM MD CC GRM T Company Confidential ST55 01/05 Copyright 2003© Siemens AG... - Page 15 Repair by SW-Booting Not possible! Test After repair procedure as described above, retest handset by ‘*#369#’. List of needed material Components ST55 Speaker Spring Part Number: L36334-Z97-C324 Jigs and Tools Soldering Iron (350°C ± 20 °C) Special Tools: Multimeter Working materials Solder V 1.1...
- Page 16 Com Drawings Figure 4.1: ST55 Board Speaker Spring Side (Top View) Figure 4.2: ST55 Board Speaker Spring Placement (JP202) (Top View) V 1.1 Page COM MD CC GRM T Company Confidential ST55 01/05 Copyright 2003© Siemens AG...
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Page 17: Sim Connector (J101)
11.11). The power will be supplied into VCC and VPP. The signal of RESET, CLOCK and DATA from DBP transmit to RST, CLK, and I/O. V 1.1 Page COM MD CC GRM T Company Confidential ST55 01/05 Copyright 2003© Siemens AG... - Page 18 Not possible! Test After repair procedure as described above, insert SIM card. List of needed material Components ST55 SIM Connector Part Number: L36334-Z97-C325 Jigs and Tools Hot Air Blower (350°C ~ 400 °C) Soldering Iron (350°C ± 20 °C) Special Tools:...
- Page 19 Com Drawings Figure 5.1: ST55 Board SIM Connector Side (Top View) Figure 5.2: ST55 Board SIM Connector Placement (J101) (Top View) V 1.1 Page COM MD CC GRM T Company Confidential ST55 01/05 Copyright 2003© Siemens AG...
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Page 20: Mic Connector (Jp201)
PIN-2 as the system is power on. The voice trace here is single end structure. Voice signal will be received by the microphone and goes to the VBC via PIN-2. V 1.1 Page COM MD CC GRM T Company Confidential ST55 01/05 Copyright 2003© Siemens AG... - Page 21 Not possible! Test Retest handset after repair procedure as described above List of needed material Components ST55 MIC Connector Part Number: L36334-Z97-C326 Jigs and Tools Hot Air Blower (350°C ~ 400 °C) Soldering Iron (350°C ± 20 °C) Special Tools:...
- Page 22 Com Drawings Figure 6.1: ST55 Board MIC Connector Side (Top View) Figure 6.2: ST55 Board MIC Connector Placement (JP201) (Top View) V 1.1 Page COM MD CC GRM T Company Confidential ST55 01/05 Copyright 2003© Siemens AG...
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Page 23: Battery Connector (Jp301)
J1 is a battery connector with 3 battery contacts as power supply portion. Normally while power on, the 3.6~4.2V voltage is provided to the handset via VBAT. Temperature is detected via TEMP. PMS:Power Management System VBC:Voiceband Codec V 1.1 Page COM MD CC GRM T Company Confidential ST55 01/05 Copyright 2003© Siemens AG... - Page 24 Test After repair procedure as described above, insert the battery and power on. List of needed material Components ST55 Battery Connector Part Number: L36334-Z97-C329 Jigs and Tools Hot Air Blower (350°C ~ 400 °C) Soldering Iron (350°C ± 20 °C)
- Page 25 Com Drawings Figure 7.1: ST55 Board Battery Connector Side (Top View) Figure 7.2: ST55 Board Battery Connector Placement (JP301) (Top View) V 1.1 Page COM MD CC GRM T Company Confidential ST55 01/05 Copyright 2003© Siemens AG...
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Page 26: Io Connector (Jp401)
530mA current flowing into the system in the beginning of charging. The fuse will be burned as soon as the charging current is lager than 1A. See drawing below. V 1.1 Page COM MD CC GRM T Company Confidential ST55 01/05 Copyright 2003© Siemens AG... - Page 27 Not possible! Test Recharge the handset after repair procedure as described above. List of needed material Components ST55 IO Connector Part Number: L36334-Z97-C327 Jigs and Tools Hot Air Blower (350°C ~ 400 °C) Soldering Iron (350°C ± 20 °C) Special Tools:...
- Page 28 Com Drawings Figure 8.1: ST55 Board IO Connector Side (Top View) Figure 8.2: ST55 Board IO Connector Placement (JP401) (Top View) V 1.1 Page COM MD CC GRM T Company Confidential ST55 01/05 Copyright 2003© Siemens AG...
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Page 29: Earpiece (Jp203)
The speaker connector is used to contact a 32ohm earpiece. It provides two traces for the dlink signal from the ADI6521 IC. See drawing below. V 1.1 Page COM MD CC GRM T Company Confidential ST55 01/05 Copyright 2003© Siemens AG... - Page 30 Jigs and Tools Hot Air Blower (350°C ~ 400 °C) Soldering Iron (350°C ± 20 °C) Special Tools: Multimeter Working materials Desolder Wick / Braid Solder V 1.1 Page COM MD CC GRM T Company Confidential ST55 01/05 Copyright 2003© Siemens AG...
- Page 31 Com Drawings Figure 9.1: ST55 Board Earpiece Side (Top View) Figure 9.2: ST55 Board Earpiece Placement (JP203) (Top View) V 1.1 Page COM MD CC GRM T Company Confidential ST55 01/05 Copyright 2003© Siemens AG...
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Page 32: Joystick (Sw401)
The joystick will be no function under normal operation. Fault Symptom on GSM-Tester: None Component Information This is a five-way joystick which ROW3, COL0~COL4, used to transmitted the ROW signal, COLUMN signal. V 1.1 Page COM MD CC GRM T Company Confidential ST55 01/05 Copyright 2003© Siemens AG... - Page 33 Jigs and Tools Hot Air Blower (350°C ~ 400 °C) Soldering Iron (350°C ± 20 °C) Special Tools: Multimeter Working materials Desolder Wick / Braid Solder V 1.1 Page COM MD CC GRM T Company Confidential ST55 01/05 Copyright 2003© Siemens AG...
- Page 34 Com Drawings Figure 10.1: ST55 Board Joystick Side (Top View) Figure 10.2: ST55 Board Joystick Placement (SW401) (Top View) V 1.1 Page COM MD CC GRM T Company Confidential ST55 01/05 Copyright 2003© Siemens AG...
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Page 35: Keypad Connector (Jp402)
There are 8 pieces LED used in the keypad FPC. The power is supplied to the LED via VBAT (PIN-12). The signal coming from DBP to LED (PIN-11) will control the ON/OFF of LED. See drawing below. V 1.1 Page COM MD CC GRM T Company Confidential ST55 01/05 Copyright 2003© Siemens AG... - Page 36 Not possible! Test Retest handset by ‘*#369#’ after repair procedure as described above List of needed material Components ST55 Keypad Connector Part Number: L36334-Z97-C328 Jigs and Tools Hot Air Blower (350°C ~ 400 °C) Soldering Iron (350°C ± 20 °C)
- Page 37 Com Drawings Figure 11.1: ST55 Board Keypad Connector Side (Top View) Figure 11.2: ST55 Board Keypad Connector Placement (JP402) (Top View) V 1.1 Page COM MD CC GRM T Company Confidential ST55 01/05 Copyright 2003© Siemens AG...
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Page 38: Fuse (F401)
4. Heat and put on a new fuse to enhance adhesion. 5. Re-solder if needed. Repair by SW-Booting Not possible! Test Connect the mobile with the PC and check the connection. V 1.1 Page COM MD CC GRM T Company Confidential ST55 01/05 Copyright 2003© Siemens AG... - Page 39 Hot Air Blower (350°C ~ 400 °C) Soldering Iron (350°C ± 20 °C) Special Tools: Multimeter Working materials Desolder Wick / Braid Solder Drawings Figure 12.1: ST55 FUSE (F401) V 1.1 Page COM MD CC GRM T Company Confidential ST55 01/05 Copyright 2003© Siemens AG...