Table Of Contents - Siemens C45 Repair Documentation

Table of Contents:

1 LIST OF AVAILABLE LEVEL 2,5E PARTS
2 REQUIRED EQUIPMENT FOR LEVEL 2,5E ......................................................5
3 REQUIRED SOFTWARE FOR LEVEL 2,5E C45, M50 AND MT50 ....................5
4
RADIO PART....................................................................................................6
4.1 Power Supply RF-Part ....................................................................................7
4.2 Frequency generation.....................................................................................9
4.2.1 Synthesizer: The discrete VCXO (26MHz)........................................................................... 9
4.2.2 Synthesizer: LO1................................................................................................................ 11
4.2.3
Synthesizer: LO2................................................................................................................ 13
4.2.4 Synthesizer: PLL ................................................................................................................ 14
4.3 Antenna switch (electrical/mechanical) ......................................................15
4.4 Receivers .......................................................................................................17
4.4.1 Receiver: GSM900/1800 -Filter to Demodulator ............................................................... 17
4.4.2 IC Overview........................................................................................................................ 19
4.5 Transmitter ....................................................................................................20
4.5.1 Transmitter: Modulator and Up-conversion Loop............................................................... 20
4.5.2 Transmitter: Power Amplifier.............................................................................................. 21
5 POWER SUPPLY ..............................................................................................22
5.1 Overview and Voltages.................................................................................22
5.2 Power Supply ASIC.......................................................................................23
5.3 Battery and Charging....................................................................................26
5.3.1 Battery................................................................................................................................ 26
5.3.2 Charging Concept .............................................................................................................. 26
6 LOGIC PART .....................................................................................................28
6.1 Overview Logic/control ...............................................................................28
6.2 EGOLD (PMB6850) V2.x ...............................................................................30
6.3 EGAIM inside the EGOLD+...........................................................................31
6.3.1 Tasks of the EGAIM inside the EGOLD+........................................................................... 32
6.4 Real Time Clock (integrated in the EGOLD+) .............................................35
SRAM .............................................................................................................36
6.5
V1.0
C45, M50 AND MT50
Page 2 of 46
Company Confidential © Copyright Siemens AG
C45, M50 + MT50 .........4
ICM MP CCQ ST
05/02