Siemens A55 Repair Documentation
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Siemens A55 Repair Documentation

Level 2.5e
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Repair Documentation
Version
V 0.95
28.08.2002
V 1.00
24.10.2002
V 1.10
17.02.2003
V 1.20
30.04.2003
V1.20
A55/C55_Hitachi
A55/C55 Hitachi
Level 2.5e
Date
Department
ICM MP CCQ S T
ICM MP CCQ GRM
ICM MP CCQ GRM
ICM MP CCQ GRM
Page 1 of 48
Company Confidential © Copyright Siemens AG
V 1.20
Notes to change
New document
Modified document
Modified document
Modified document
ICM MP CCQ GRM
04/03

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  • Page 1 ICM MP CCQ GRM Modified document V 1.10 17.02.2003 ICM MP CCQ GRM Modified document V 1.20 30.04.2003 ICM MP CCQ GRM Modified document V1.20 Page 1 of 48 ICM MP CCQ GRM A55/C55_Hitachi Company Confidential © Copyright Siemens AG 04/03...

  • Page 2: Table Of Contents

    Table of Contents: LIST OF AVAILABLE LEVEL 2,5E PARTS A55/C55 ........4 REQUIRED EQUIPMENT FOR LEVEL 2,5E ............5 REQUIRED SOFTWARE FOR LEVEL 2,5E A55/C55........5 RADIO PART ...................... 6 Power Supply RF-Part ..................6 Frequency generation ..................7 4.2.1 Synthesizer: The discrete VCXO (26MHz)................7...
  • Page 3 Electrical ..........................45 Earpiece/Loudspeaker ................. 46 8.2.1 Mechanical .........................46 8.2.2 Electrical ..........................46 DISPLAY AND ILLUMINATION................ 47 Display......................47 Illumination ....................47 KEYBOARD ....................48 V1.20 Page 3 of 48 ICM MP CCQ GRM A55/C55_Hitachi Company Confidential © Copyright Siemens AG 04/03...

  • Page 4: List Of Available Level 2,5E Parts A55/C55

    L36145-F102-Y8 Z211 Filter HIT/IFX Logic/IO_Interface L36197-F5000-F116 Z850 1LO_VCO L36145-G100-Y96 Z851 Filter Filter_BALUN L36145-K260-Y41 Z880 Ant_Switch_Diplexer L36145-K280-Y257 Z900 Power_Amplifier L36851-Z2002-A59 Z950 Quartz Oszillator_26MHz L36145-F260-Y17 V1.20 Page 4 of 48 ICM MP CCQ GRM A55/C55_Hitachi Company Confidential © Copyright Siemens AG 04/03...

  • Page 5: Required Equipment For Level 2,5E

    Software for GSM-Tester ( Cats(Acterna/Wiltek) or CMU-GO(Rohde&Schwarz) ) Software for reference oscillator adjustment Internet unblocking solution Dongle driver for USB-Dongle if used with WIN NT4 V1.20 Page 5 of 48 ICM MP CCQ GRM A55/C55_Hitachi Company Confidential © Copyright Siemens AG 04/03...

  • Page 6: Radio Part

    4 Radio Part The radio part of the A55/C55, is using a Hitachi and an Infineon RF chip-set. This manual covers the Hitachi chip-set. For Infineon there is an additional manual available. The radio part is designed for Dual Band operation, covering EEGSM900 as well as GSM 1800 frequencies, and can be divided into 4 Blocks.

  • Page 7: Frequency Generation

    4.2 Frequency generation 4.2.1 Synthesizer: The discrete VCXO (26MHz) The A55/C55 mobile is using a reference frequency of 26MHz for the Hitachi chip set. The generation of the 26MHz signal is done via a discrete “Colpitts” VCXO. This oscillator consists mainly of:...
  • Page 8 4 7 K 3 0 K 2 2 K G N D G N D G N D Circuit diagram from EGOLD to Bright IC V1.20 Page 8 of 48 ICM MP CCQ GRM A55/C55_Hitachi Company Confidential © Copyright Siemens AG 04/03...

  • Page 9: Synthesizer: Lo1

    The VCO output signal passes the “Balun” transformer (Z851) with insertion losses of ~ 2dB to arrive at the Bright IC. The required voltage VCC8_8 is provided by the ASIC D361 V1.20 Page 9 of 48 ICM MP CCQ GRM A55/C55_Hitachi Company Confidential © Copyright Siemens AG 04/03...
  • Page 10 Circuit diagram from EGOLD+ Bright 4 26MHz Balun transformer View V1.20 Page 10 of 48 ICM MP CCQ GRM A55/C55_Hitachi Company Confidential © Copyright Siemens AG 04/03...

  • Page 11: Synthesizer: Lo2

    640/656MHz VCO. The required voltage VCC_SYN is provided by the ASIC D361 Circuit diagram Loop-filter LO2 V1.20 Page 11 of 48 ICM MP CCQ GRM A55/C55_Hitachi Company Confidential © Copyright Siemens AG 04/03...

  • Page 12: Synthesizer: Pll

    4.2.4 Synthesizer: PLL PLL as a part of the BRIGHT IC Blockdiagram V1.20 Page 12 of 48 ICM MP CCQ GRM A55/C55_Hitachi Company Confidential © Copyright Siemens AG 04/03...

  • Page 13: Antenna Switch (Electrical/Mechanical Only C55)

    TXON_GSM are required As a new feature the A55/C55 has an integrated “SAR detection” circuit. This circuit is used to decide if the internal antenna or an external antenna is used. The goal is, to reduce the transmit power when the internal antenna is used and the mobile is held very close to the body.
  • Page 14 The electrical antenna switch to Antenna Bright Z880 Top View V1.20 Page 14 of 48 ICM MP CCQ GRM A55/C55_Hitachi Company Confidential © Copyright Siemens AG 04/03...

  • Page 15: Receiver

    PGA- Amplification and switching the appropriate LNA gains The required voltage VCC_SYN is provided by the ASIC D361 V1.20 Page 15 of 48 ICM MP CCQ GRM A55/C55_Hitachi Company Confidential © Copyright Siemens AG 04/03...
  • Page 16 Circuit diagram from LO1 from antenna progr. signals to EGOLD+ V1.20 Page 16 of 48 ICM MP CCQ GRM A55/C55_Hitachi Company Confidential © Copyright Siemens AG 04/03...

  • Page 17: Ic Overview

    4.4.2 IC Overview IC Overview BRIGHT IV V1.20 Page 17 of 48 ICM MP CCQ GRM A55/C55_Hitachi Company Confidential © Copyright Siemens AG 04/03...

  • Page 18: Transmitter

    (~1,5MHz) guarantees that the regulating process is considerably quicker than the changes in the modulation signal. The required voltage VCC_SYN VCC2_8 is provided by the ASIC D361 from EGOLD+ to PA V1.20 Page 18 of 48 ICM MP CCQ GRM A55/C55_Hitachi Company Confidential © Copyright Siemens AG 04/03...

  • Page 19: Transmitter: Power Amplifier

    Blockdiagram of LML240 (PA control IC) PA_ON Vhom Out B Comp1 Comp 2 10 9 8 7 6 view 1 2 3 4 5 V1.20 Page 19 of 48 ICM MP CCQ GRM A55/C55_Hitachi Company Confidential © Copyright Siemens AG 04/03...

  • Page 20: Logic / Control

    5 Logic / Control 5.1 Overview of Hardware Structure 5.1.1 Logic Block Diagram Part RF Control 5.1.2 Block Diagram A55/C55 Control Part V1.20 Page 20 of 48 ICM MP CCQ GRM A55/C55_Hitachi Company Confidential © Copyright Siemens AG 04/03...

  • Page 21: Egold

    • Control of base band processing (EGAIM) • Central operating system functions (general functions, chip select logic, HW driver, control of mobile phones and accessories...). V1.20 Page 21 of 48 ICM MP CCQ GRM A55/C55_Hitachi Company Confidential © Copyright Siemens AG 04/03...
  • Page 22 • 1 D/A converter for the Power Ramping Signal, • 1 Sigma Delta A/D and D/A converter for the linguistic signal. Blockdiagram EGAIM inside the EGOLD V1.20 Page 22 of 48 ICM MP CCQ GRM A55/C55_Hitachi Company Confidential © Copyright Siemens AG 04/03...
  • Page 23 R146 to the EGOLD+ (Analog . An analogue multiplexer does the switching between the baseband signal Interface P1) processing and the voltage measurement. V1.20 Page 23 of 48 ICM MP CCQ GRM A55/C55_Hitachi Company Confidential © Copyright Siemens AG 04/03...
  • Page 24 After loading into an 10 bit latch the control value will be converted into the corresponding analogue voltage with a maximum of ~2V Key-Value V1.20 Page 24 of 48 ICM MP CCQ GRM A55/C55_Hitachi Company Confidential © Copyright Siemens AG 04/03...

  • Page 25: Sram

    5.1.5 FLASH Memory Size: 64Mbit (8 Mbyte) Data Bus: 16 Bit 5.1.6 SIM SIM cards with supply voltages of 1.8V and 3V are supported. V1.20 Page 25 of 48 ICM MP CCQ GRM A55/C55_Hitachi Company Confidential © Copyright Siemens AG 04/03...

  • Page 26: Vibration Motor

    The bandgap-voltage is used as reference for the voltage regulators. V1.20 Page 26 of 48 ICM MP CCQ GRM A55/C55_Hitachi Company Confidential © Copyright Siemens AG 04/03...

  • Page 27: Power Supply Diagram

    6.1.1 Power Supply Diagram V1.20 Page 27 of 48 ICM MP CCQ GRM A55/C55_Hitachi Company Confidential © Copyright Siemens AG 04/03...

  • Page 28: Power Supply Operating Modes

    VDD_CHARGE (PinC3) with the internal LDO is switched off. Only the battery can be used for supply. This mode is called “phone stand-by”. V1.20 Page 28 of 48 ICM MP CCQ GRM A55/C55_Hitachi Company Confidential © Copyright Siemens AG 04/03...

  • Page 29: Power Supply Functions

    Therefore this signal is sensed as level sensitive at the end of POR and edge sensitive after POR signal. V1.20 Page 29 of 48 ICM MP CCQ GRM A55/C55_Hitachi Company Confidential © Copyright Siemens AG 04/03...
  • Page 30 REG2, which will force the regulator to a lower input voltage and therefore lower power dissipation. V1.20 Page 30 of 48 ICM MP CCQ GRM A55/C55_Hitachi Company Confidential © Copyright Siemens AG 04/03...
  • Page 31 TWI bit. In external mode, RF2LDO can only be enabled by VCXO_EN (PinH1). RF2LDO is released with rising edge of POWER_ON signal. V1.20 Page 31 of 48 ICM MP CCQ GRM A55/C55_Hitachi Company Confidential © Copyright Siemens AG 04/03...
  • Page 32 Temperature switchoff becomes effective at approx. T>60°C. Voltage The levels of regulator REG1 and REG2 and supervision also the supply voltage BATT+ are supervised with comparators. V1.20 Page 32 of 48 ICM MP CCQ GRM A55/C55_Hitachi Company Confidential © Copyright Siemens AG 04/03...
  • Page 33 µC about special conditions. The interface can handle clock rates up to 400 kHz. V1.20 Page 33 of 48 ICM MP CCQ GRM A55/C55_Hitachi Company Confidential © Copyright Siemens AG 04/03...
  • Page 34 If the audio amplifier is already up and running, the RINGIN (PinG9) is connected to the amplifier and audio signal is muted due to open multiplexer. V1.20 Page 34 of 48 ICM MP CCQ GRM A55/C55_Hitachi Company Confidential © Copyright Siemens AG 04/03...
  • Page 35 32xCLO clock for the DSP and the DAC. The loop filter is realized with an external RC circuit. This PLL also contains a lock detector circuit. V1.20 Page 35 of 48 ICM MP CCQ GRM A55/C55_Hitachi Company Confidential © Copyright Siemens AG 04/03...

  • Page 36: Battery

    As a standard battery a LiIon battery with a nominal capacity of 3,7 Volt/700mAh is used. 6.3 Charging Concept Charging current Charging control signal V1.20 Page 36 of 48 ICM MP CCQ GRM A55/C55_Hitachi Company Confidential © Copyright Siemens AG 04/03...
  • Page 37 Q-branch. Processing in the DSP circuit will be done analogue to the I-branch. The EGOLD will be specified internally at voltage measurement input BATT+ for an input voltage of 3V...4.5V. V1.20 Page 37 of 48 ICM MP CCQ GRM A55/C55_Hitachi Company Confidential © Copyright Siemens AG 04/03...
  • Page 38 At 2C, the same battery delivers 2000mA for 30 minutes. 1C is often referred to as a one-hour discharge; a 0.5 would be a two-hour, and a 0.1C a 10 hour discharge. V1.20 Page 38 of 48 ICM MP CCQ GRM A55/C55_Hitachi Company Confidential © Copyright Siemens AG 04/03...
  • Page 39 Customer safety will not be affected by this restriction. V1.20 Page 39 of 48 ICM MP CCQ GRM A55/C55_Hitachi Company Confidential © Copyright Siemens AG 04/03...

  • Page 40: Interfaces

    “earpiece” (earpiece, ringer, handsfree function). EPN1 2nd connection to the internal earpiece. Earpiece can be switched off in the case of accessory operation. V1.20 Page 40 of 48 ICM MP CCQ GRM A55/C55_Hitachi Company Confidential © Copyright Siemens AG 04/03...

  • Page 41: Microphone

    GND_MIC 7.4 Battery XG181 Name Level Remarks Ground AKKU_TYP 0V...2.65V Recognition of battery/supplier BATT+ 3 V... 4.5V Positive battery pole V1.20 Page 41 of 48 ICM MP CCQ GRM A55/C55_Hitachi Company Confidential © Copyright Siemens AG 04/03...

  • Page 42: Io Connector With Esd Protection

    AUDIO_L and AUDIO_R in mono mode not used AUDIO_R Analog driving ext. right speaker With mono-headset Audio_L and Audio_R differential Signal GND_MIC Analog for ext. microphone MICP2 Analog External microphone V1.20 Page 42 of 48 ICM MP CCQ GRM A55/C55_Hitachi Company Confidential © Copyright Siemens AG 04/03...

  • Page 43: Esd Protection With Emi Filter

    Electrostatic Discharge (ESD) voltages up to 8 kV. Pin configuration of the Z211 Z211 Circuit Configuration V1.20 Page 43 of 48 ICM MP CCQ GRM A55/C55_Hitachi Company Confidential © Copyright Siemens AG 04/03...

  • Page 44: Sim

    Remarks 2.9V Power supply display controller LCD_CLK Clock LCD_DAT Data line LCD_RS Register select LCD_CS Chip select VLCD Power supply display LCD_RESET Reset V1.20 Page 44 of 48 ICM MP CCQ GRM A55/C55_Hitachi Company Confidential © Copyright Siemens AG 04/03...

  • Page 45: Acoustic

    MICN1, MICP1 (Internal Microphone )and MICN2, MICP2 (External Microphone/Headset). Power supply for the Microphone is VMIC (EGOLD+.( Analog Interface G1) V1.20 Page 45 of 48 ICM MP CCQ GRM A55/C55_Hitachi Company Confidential © Copyright Siemens AG 04/03...

  • Page 46: Earpiece/Loudspeaker

    The ringing tones are generated with the loudspeaker too. To activate the ringer, the signal RINGIN from the EGOLD+ ) is used Miscellaneous,D16 to ASIC from Bright EGOLD+ V1.20 Page 46 of 48 ICM MP CCQ GRM A55/C55_Hitachi Company Confidential © Copyright Siemens AG 04/03...

  • Page 47: Display And Illumination

    ) the display backlight can be switched “on” and “off”. During the GSM TDMA-Timer G15 TX timeslot the light is deactivated via the signal BL_OFF GSM TDAM-Timer G14 V1.20 Page 47 of 48 ICM MP CCQ GRM A55/C55_Hitachi Company Confidential © Copyright Siemens AG 04/03...

  • Page 48: Keyboard

    KB 7 is used for the ON/OFF switch. The lines KB0 – KB5 are used as output signals. In the matrix KB6, KB8 and KB9 are used as input signals for the EGOLD+. V1.20 Page 48 of 48 ICM MP CCQ GRM A55/C55_Hitachi Company Confidential © Copyright Siemens AG 04/03...

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