Siemens C75 Einrichtungshandbuch

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Page 1of 37

Service Repair Documentation

Level 2.5e – C75 Release 1.0

Service Repair Documentation

Level 2.5e – C75

Release Date Department Notes to change

1.0 05.08.2005 ICM MP CCQ GRM T New document

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Page 2of 37

Service Repair Documentation

Level 2.5e – C75 Release 1.0

Table of Contents:

1List of available level 2,5e parts C75 4

2Required Equipment for Level 2,5e 5

3Required Software for Level 2,5e 5

4Radio Part 6

4.1 BLOCK DIAGRAM RF PART 7

4.2 POWER SUPPLY RF-PART 7

4.3 FREQUENCY GENERATION 8

4.4 RECEIVER 11

4.5 TRANSMITTER 12

4.6 BRIGHT IC OVERVIEW 13

4.7 ANTENNA SWITCH (ELECTRICAL/MECHANICAL) 15

4.8 TRANSMITTER:POWER AMPLIFIER 17

5Logic / Control 18

5.1 OVERVIEW HARDWARE STRUCTURE C75 18

5.2 SGOLDLITE 18

5.2.1 Digital Baseband 18

5.2.2 SDRAM 22

5.2.3 FLASH 23

5.2.4 SIM 23

5.2.5 Vibration Motor 23

5.2.6 Camera 23

5.2.7 Display 23

5.2.8 Camera, Display ASIC 24

6IRDA 24

7Power Supply 25

7.1 ASIC MOZART /TWIGO4 25

7.1.1 Battery 25

7.1.2 Charging Concept 25

8Illumination 28

9Interfaces 29

9.1 MICROPHONE (XG1901) 29

9.2 LOUDSPEAKER (XG1702-XG1703) 30

9.3 BATTERY (X1400) 30

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Service Repair Documentation

Level 2.5e – C75 Release 1.0

9.4 CAMERA SOCKET (X3651) 31

9.5 IRDA (V2650) 32

9.6 INTERFACE SIM MODULE 32

9.7 IO CONNECTOR WITH ESD PROTECTION 33

9.8 VIBRATION MOTOR (XG2100) 36

9.9 DISPLAY 36

9.10 BOARD TO BOARD CONNECTOR 37

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Page 4of 37

Service Repair Documentation

Level 2.5e – C75 Release 1.0

1 List of available level 2,5e parts C75

(according to Component Matrix V1.06 - check C-market for updates)

Product RF

Chipset ID Order Number Description CM

C75 HIT C1329 L36344-F1225-M12 CAPACITOR 2*2U2 (Cap-Type7)

C75 HIT C1330 L36344-F1225-M12 CAPACITOR 2*2U2 (Cap-Type7)

C75 HIT C1332 L36344-F1225-M12 CAPACITOR 2*2U2 (Cap-Type7)

C75 HIT C1363 L36377-F6225-M CAPACITOR 2U2 (Cap-Type4)

C75 HIT D1000 L50610-G6196-D670 IC SGOLDLITE PMB8875 V1X PB-FREE

C75 HIT D1300

L50645-J4683-Y22 IC ASIC D1094ED-MOZART+ TWIGO4+

C75 HIT D3601 L50620-U6053-D670 IC CAMERA INTERFACE S1D13716B02 PB FREE

C75 HIT D902

L50645-K80-Y308 IC FEM MURATA GSM900 1800 1900 (Fem-Type6)

C75 HIT D903 L50620-L6170-D670 IC TRANCEIVER HD155165BP PB Free

C75 HIT L1300 L36140-F2100-Y6 COIL 0603 (Co-Type4)

C75 HIT L1301 L36151-F5103-M3 COIL 10U (Co-Type1)

C75 HIT L1302 L36151-F5472-M1 COIL 4U7 (Co-Type3)

C75 HIT L1303 L50640-F100-Y10 COIL 1206 (Co-Type5)

C75 HIT L1318 L36140-F2100-Y6 COIL 0603 (Co-Type4)

C75 HIT L1331 L36140-F2100-Y6 COIL 0603 (Co-Type4)

C75 HIT N1501 L36810-B6132-D670 IC LOGIC DUAL BUS SWITCH US8

C75 HIT N3600 L506810-C6153-D670 IC ANA RE 2.9V USMD5 PB FREE

C75 HIT N901 L50651-Z2002-A82 IC MODUL PA PF0814 (PA-Type2)

C75 HIT R955 L36120-F4223-H RESISTOR TEMP 22K (Res-Type7)

C75 HIT V1305 L36830-C1107-D670 TRANSISTOR SI5933 (Tra-Type2)

C75 HIT V1400 L36840-D66-D670 DIODE BAV99T (Di-Type5)

C75 HIT V1500 L36840-C4057-D670 TRANSISTOR EMD12 EMT6 (Tra-Type8)

C75 HIT V1605 L36840-D3088-D670 DIODE SC89 (Di-Type2)

C75 HIT V2100 L50640-D5084-D670 DIODE RB548W (Di-Type8)

C75 HIT V2302 L36840-C4014-D670 TRANSISTOR BC847BS BC846S (Tra-Type7)

C75 HIT V2821 L36830-C1112-D670 TRANSISTOR SI1902 (Tra-Type4)

C75 HIT V950 L36840-D61-D670 DIODE 1SV305 (Di-Type4)

C75 HIT Z1000 L50645-F102-Y40 QUARZ 32,768KHZ (Q-Type4)

C75 HIT Z1500 L50620-L6151-D670 FILTER EMI (Fi-Type5) PB Free

C75 HIT Z950 L36145-F260-Y17 QUARZ 26MHZ (Q-Type4)

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Service Repair Documentation

Level 2.5e – C75 Release 1.0

2 Required Equipment for Level 2,5e

- GSM-Tester (CMU200 or 4400S incl. Options)

- PC-incl. Monitor, Keyboard and Mouse

- Bootadapter 2000/2002 (L36880-N9241-A200)

- Adapter cable for Bootadapter due to new Lumberg connector (F30032-P226-A1)

- Troubleshooting Frame A62/A65(C75/A75) (F30032-P405-A1)

- Power Supply

- Spectrum Analyser

- Active RF-Probe incl. Power Supply

- Oscilloscope incl. Probe

- RF-Connector (N<>SMA(f))

- Power Supply Cables

- Dongle (F30032-P28-A1) if USB-Dongle is used a special driver for NT is required

- BGA Soldering equipment

Reference: Equipment recommendation V1.6

(downloadable from the technical support page)

3 Required Software for Level 2,5e

- Windows XP

- X-Focus version XX or higher

- GRT Version 3 or higher

- Internet unblocking solution (JPICS)

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Service Repair Documentation

Level 2.5e – C75 Release 1.0

4 Radio Part

The radio part is realizes the conversion of the GMSK-HF-signals from the antenna to the

baseband and vice versa.

In the receiving direction, the signals are split in the I- and Q-component and led to the D/A-

converter of the logic part. In the transmission direction, the GMSK-signal is generated in an

Up Conversion Modulation Phase Locked Loop by modulation of the I- and Q-signals which

were generated in the logic part. After that the signals are amplified in the power amplifier.

Transmitter and Receiver are never active at the same time. Simultaneous receiving in the

EGSM900 and GSM1800 band is impossible. Simultaneous transmission in the EGSM900

and GSM1800 band is impossible, too. However the monitoring band (monitoring timeslot) in

the TDMA-frame can be chosen independently of the receiving respectively the transmitting

band (RX- and TX timeslot of the band).

The RF-part is dimensioned for triple band operation (EGSM900, DCS1800, PCS19000)

supporting GPRS functionality up to multiclass 10.

The RF-circuit consists of the following components:

•Hitachi Bright 6E chip set (HD155165BP) with the following functionality:

oPLL for local oscillator LO1 and LO2 and TxVCO

oIntegrated local oscillators LO1, LO2

oIntegrated TxVCO

oDirect conversion receiver including LNA, DC-mixer, channel filtering and

PGC-amplifier

o26 MHz reference oscillator

•Transmitter power amplifier with integrated power control circuitry

•Frontend-Module including RX-/TX-switch and EGSM900 / DCS1800 / PCS 1900

receiver SAW-filters

•Quartz and passive circuitry of the 26MHz VCXO reference oscillator

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Service Repair Documentation

Level 2.5e – C75 Release 1.0

4.1 Block diagram RF part

4.2 Power Supply RF-Part

The voltage regulator for the RF-part is located inside the ASIC D1300. It generates the

required 2,8V “RF-Voltages” named VDD_RF1 and VDD_RF2. VDD_RF2 is passed via a 0Ω

resistor and renamed as VDD_BRIGHT as operating voltage for the BRIGHT. The voltage

regulator is activated as well as deactivated via VCXOEN_UC (Functional F23) provided by the

SGOLDlite. The temporary deactivation is used to extend the stand by time.

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Service Repair Documentation

Level 2.5e – C75 Release 1.0

4.3 Frequency generation

The C75 mobile is using a reference frequency of 26MHz. The generation of the 26MHz

signal is done via a VCO (Z950). TP (test point) of the 26MHz signal is the TP 820

The oscillator output signal 26MHz_RF is directly connected to the BRIGHT IC (ball B9) to be

used as reference frequency inside the Bright (PLL). The signal leaves the Bright IC as

RF_SIN26M (ball G9)to be further used from the SGOLDlite (D1000(Functional AE15)).

VCXO Out

SGOLDlite In

Bright 6E

To compensate frequency drifts (e.g. caused by temperature) the oscillator frequency is

controlled by the (RF_AFC) signal, generated through the internal SGOLDlite (D1000 (A10))

PLL. Reference for the “EGOLD-PLL” is the base station frequency received via the

Frequency Correction Burst.

The required voltage VDD_RF2 is provided by the ASCI D1300

Waveform of the AFC_PNM signal from SGOLDlite to Oscillator

SGOLDlite

GND GND

RF_AFC

Signalform

AFC_PNM

GND

1 2 3

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Service Repair Documentation

Level 2.5e – C75 Release 1.0

Synthesizer: LO1

First local oscillator (LO1) consists of a PLL and VCO inside Bright (D903) and an internal

loop filter

RF PLL

The frequency-step is 400 kHz in GSM1800 mode and 800kHz in EGSM900 mode due to the

internal divider by two for GSM1800 and divider by four for EGSM900. To achieve the

required settling-time in GPRS operation, the PLL can operate in fastlock-mode a certain

period after programming to ensure a fast settling. After this the loopfilter and currents are

switched into normal-mode to get the necessary phasenoise-performance. The PLL is

controlled via the tree-wire-bus of Bright VI E.

RFVCO (LO1)

The first local oscillator is needed to generate frequencies which enable the transceiver IC to

demodulate the receiver signal and to perform the channel selection in the TX part. The VCO

module is switched on with the signal PLLON. The full oscillation range is divided into 256

sub-bands To do so, a control voltage for the LO1 is used, gained by a comparator. This

control voltage is a result of the comparison of the divided LO1 and the 26MHz reference

Signal. The division ratio of the dividers is programmed by the SGOLDlite, according to the

network channel requirements.

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Page 10 of 37

Service Repair Documentation

Level 2.5e – C75 Release 1.0

Matrix to calculate the TX and RX frequencies C75:

Band RX / TX Channels RF frequencies LO1 frequency IF freq.

EGSM 900 Receive: 0..124 935,0 - 959,8 MHz LO1 = 4*RF

EGSM 900 Transmit: 0..124 890,0 - 914,8 MHz LO1 = 4*(RF+IF) 80,0 MHz

EGSM 900 Receive: 975..1023 925,2 - 934,8 MHz LO1 = 4*RF

EGSM 900 Transmit: 975..1023 880,2 - 889,8 MHz LO1 = 4*(RF+IF) 82,0 MHz

GSM 1800 Receive: 512..661 1805,2 - 1835,0 MHz LO1 = 2*RF

GSM 1800 Transmit: 512..661 1710,2 - 1740,0 MHz LO1 = 2*(RF+IF) 80,0 MHz

GSM 1800 Receive: 661..885 1835,0 - 1879,8 MHz LO1 = 2*RF

GSM 1800 Transmit: 661..885 1740,0 - 1784,8 MHz LO1 = 2*(RF+IF) 82,0 MHz

GSM 1900 Receive: 512..810 1930,2 - 1989,8 MHz LO1 = 2*RF

GSM 1900 Transmit: 512..810 1850,2 - 1909,8 MHz LO1 = 2*(RF+IF) 80,0 MHz

Synthesizer: LO2

The second local oscillator (LO2) consists of a PLL and VCO inside Bright (D903) and an

internal loop filter. Due to the direct conversion receiver architecture, the LO2 is only used for

transmit-operation. The LO2 covers a frequency range of at least 16 MHz (640MHz –

656MHz).

Before the LO2-signal gets to the modulator it is divided by 8. So the resulting TX-IF

frequencies are 80/82 MHz (dependent on the channel and band). The LO2 PLL and power-

up of the VCO is controlled via the tree-wire-bus of Bright (SGOLDlite signals RF_DAT;

RF_CLK; RF_STR). To ensure the frequency stability, the 640MHz VCO signal is compared

by the phase detector of the 2nd PLL with the 26Mhz reference signal. The resulting control

signal passes the external loop filter and is used to control the 640/656MHz VCO.

The required voltage VDD_BRIGHT is provided by the ASIC D1300

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