Siemens K45 Service Manual
C45 / ME45 / S45
(K45)
Level 2.5e
Repair Documentation
V 1.0
V1.0 Page 1 of 54 ICM MP CC ST
K45 Company Confidential © Copyright Siemens AG 12/01
Table of Contents:
1 LIST OF AVAILABLE LEVEL 2,5E PARTS C45 + K45...................................... 4
2 REQUIRED EQUIPMENT FOR LEVEL 2,5E K45 ............................................... 6
3 REQUIRED SOFTWARE FOR LEVEL 2,5E K45 ................................................ 6
4 RADIO PART ........................................................................................................ 7
4.1 Power Supply RF-Part ..................................................................................... 8
4.2 Frequency generation ................................................................................... 10
4.2.1 Synthesizer: The discrete VCXO (13MHz) .......................................................................... 10
4.2.2 Synthesizer: LO1 ................................................................................................................. 12
4.2.3 Synthesizer: LO2 ................................................................................................................. 14
4.2.4 Synthesizer: PLL .................................................................................................................. 16
4.3 Antenna switch (electrical/mechanical) ....................................................... 18
4.4 Receivers ........................................................................................................ 20
4.4.1 Receiver: GSM900/1800 –Filter to Demodulator ................................................................. 20
4.4.2 IC Overview ......................................................................................................................... 23
4.5 Transmitter ..................................................................................................... 25
4.5.1 Transmitter: Modulator and Up-conversion Loop ................................................................ 25
4.5.2 Transmitter: Power Amplifier ............................................................................................... 27
5 POWER SUPPLY ............................................................................................... 28
5.1 Overview and Voltages ................................................................................. 28
5.2 Power Supply ASIC ....................................................................................... 29
5.3 Battery and Charging .................................................................................... 32
5.3.1 Battery ................................................................................................................................. 32
5.3.2 Charging Concept ................................................................................................................ 32
6 LOGIC PART ...................................................................................................... 34
6.1 Overview Logic/control ................................................................................ 34
6.2 EGOLD (PMB6850) V1.3c/V2.x ...................................................................... 36
6.3 EGAIM inside the EGOLD+ ........................................................................... 37
6.3.1 Tasks of the EGAIM inside the EGOLD+ ............................................................................ 38
6.4 Real Time Clock (integrated in the EGOLD+) .............................................. 41
6.5 SRAM ................................ ................................ ................................ .............. 42
V1.0 Page 2 of 54 ICM MP CC ST
K45 Company Confidential © Copyright Siemens AG 12/01
6.6 FLASH ............................................................................................................. 43
6.7 IRDA ................................................................................................................ 44
7 ACOUSTICS ....................................................................................................... 45
7.1 General ........................................................................................................... 45
7.2 Vibra ................................................................................................................ 46
7.3 Microphone and Loudspeaker (Ringer) ...................................................... 47
7.3.1 Loudspeaker ........................................................................................................................ 47
7.3.2 Microphone .......................................................................................................................... 47
7.3.3 Loudspeaker/Ringer ............................................................................................................ 48
8 ILLUMINATION: ................................................................................................. 49
8.1 Illumination .................................................................................................... 49
9 SIM-CARD AND CONNECTORS ....................................................................... 50
9.1 SIM-Card ......................................................................................................... 50
9.2 Display connector .......................................................................................... 51
9.3 MMI-Connector ............................................................................................... 52
9.4 Battery Connector ......................................................................................... 54
V1.0 Page 3 of 54 ICM MP CC ST
K45 Company Confidential © Copyright Siemens AG 12/01
C45
D100
IC
Egold+
4EGO
L36810-G6132-D670
C45
Z100
Quarz
Quarz/Egold+/Logic
4OSC
L36145-F102-Y8
C45
V342
Transistor
Tran._Charge
4CHT
L36830-C1104-D670
C45
V306
Diode
Diode_AF
4DAF
L36840-D3084-D670
C45
V344
Diode
Diode_Charge
4DCH
L36840-D5061-D670
C45
D361
IC
ASIC
4SPA
L36145-J4682-Y29
C45
N386
IC
Volt.Regulator_ZUB
4REG
L36820-C6161-D670
C45
V442
Transistor
Tran._Vibra_Switch
4VIT
L36830-C1097-D671
C45
V880
Transistor
Tran._Diplexer_Switch
4TDI
L36820-C6047-D670
C45
V881
Transistor
Tran._Diplexer_Switch
4TDI
L36820-C6047-D670
C45
Z880
IC
Ant_Switch_Diplexer
4ANS
L36145-K280-Y181
C45
Z850
VCO
VCO_1.LO
4VC1
L36145-G100-Y69/Y93
C45
Z890
VCO
VCO_TX/RF
4VCT
L36145-G100-Y59/Y92
C45
V850
Transistor
Tran._VCO_Switch
4TLO
L36820-C6047-D670
C45
Z851
Filter
Filter_BALUN
4BAL
L36145-K260-Y31
C45
N840
IC
Volt.Regulator_RF
4REG
L36810-C6065-D670
C45
D800
IC
Transceiver IC
4DEM
L36820-L6081-D670
C45
Z900
PA
Power_Amplifier
4PAM
L36851-Z2002-A45
C45
V922
Transistor
Tran._PA_Control
4PAT
L36840-C4009-D670
C45
V950
Transistor
Tran._26MHz_Ampl.
4T26
L36840-C4049-D670
C45
R959
Resistor
Temp_Resistor
4TER
L36120-F4223-H
C45
Z950
Quarz
Oszillator_26MHz
4VCX
L36145-F260-Y16
C45
D920
IC
PA_Comperator
4COM
L36820-L6084-D670
C45
V951
Diode
Capa_Diode
4CAD
L36840-D61-D670
C45
V920
Diode
Feedback_Diode
4FED
L36840-D5049-D670
K45
D100
IC
Egold+
4EGO
L36810-G6132-D670
K45
Z100
Quarz
Quarz/Egold+/Logic
4OSC
L36145-F102-Y10
K45
V342
Transistor
Tran._Charge
4CHT
L36830-C1104-D670
K45
D361
IC
ASIC
4SPA
L36145-J4682-Y29
K45
V922
Transistor
Tran._PA_Control
4PAT
L36840-C4009-D670
K45
N920
IC
Op.Amp/PA_RF
4OPA
L36820-L6084-D670
1 List of available level 2,5e parts C45 + K45
Phone type ID-No Type Name(function)/Location Rep-Code Order No.
V1.0 Page 4 of 54 ICM MP CC ST
K45 Company Confidential © Copyright Siemens AG 12/01
K45
V880
Transistor
Tran._Diplexer_Switch
4TDI
L36820-C6047-D670
K45
V881
Transistor
Tran._Diplexer_Switch
4TDI
L36820-C6047-D670
K45
N840
IC
Volt.Regulator_RF
4REG
L36810-C6065-D670
K45
Z900
PA
Power_Amplifier
4PAM
L36851-Z2002-A45
K45
D800
IC
RF_Demod./Mod.
4DEM
L36820-L6081-D670
K45
Z851
Filter
Filter_BALUN
4BAL
L36145-K260-Y31
K45
Z950
Quarz
Oszillator_26MHz
4VCX
L36145-F260-Y16
K45
Z850
VCO
VCO_1.LO
4VC1
L36145-G100-Y69
K45
Z890
VCO
VCO_TX/RF
4VCT
L36145-G100-Y59
K45
V850
Transistor
Tran._VCO_Switch
4TLO
L36820-C6047-D670
K45
V950
Transistor
Tran._13MHz_Ampl.
4T13
L36840-C4049-D670
K45
N386
IC
Volt.Regulator_ZUB.
4REG
L36820-C6161-D670
K45
V344
Diode
Diode_Charge
4DCH
L36840-D5061-D670
K45
V306
Diode
Diode_AF
4DAF
L36840-D3084-D670
K45
Z880
IC
Ant_Switch_Diplexer
4ANS
L36145-K280-Y181
K45
V951
Diode
Capa_Diode
4CAD
L36840-D61-D670
K45
R959
Resistor
Temp_Resistor
4TER
L36120-F4223-H
K45
V920
Diode
Feedback_Diode
4FED
L36840-D5049-D670
K45
Inf. Z871
Filter
IF_360/RF
4IFF
L36145-K280-Y182
K45
Inf. D800
IC
Smarti+
4SMA
L36820-L6092-D670
K45
Inf. Z852
Filter
RX_PCN/RF
4FI1
L36145-K280-Y183
K45
Inf. Z851
Filter
RX_GSM/RF
4FI1
L36145-K280-Y172
K45
Inf. Z861
VCO
VCO_TX/RF
4VCT
L36145-G100-Y62
K45
Inf. Z880
VCO
VCO_1.LO
4VC1
L36145-G100-Y64
K45
Inf. V902
Transistor
Tran._Switch
4SWT
L36820-C6047-D670
K45
Inf. N901
PA
Power_Amplifier_PCN
4PAP
L36851-Z2002-A48
K45
Inf. N902
PA
Power_Amplifier_GSM
4PAG
L36851-Z2002-A47
K45
Inf. N970
IC
Volt.Regulator_RF
4REG
L36810-C6065-D670
K45
Inf. Z900
Diplexer
Diplexer
4DIP
K45
Inf. D904
IC
Diplexer Switch
4SWI
L36810-B6101-D670
K45
Inf. D905
IC
Diplexer Switch
4SWI
L36810-B6101-D670
K45
Inf. Z1000
Quarz
Oszillator_13MHz
4VCX
L36145-F220-Y4
K45
Inf. D903
IC
Op.Amp/PA_RF
4OPA
L36820-L6084-D670
K45
Inf. V903
Diode
Feedback_Diode
4FED
L36840-D5049-D670
V1.0 Page 5 of 54 ICM MP CC ST
K45 Company Confidential © Copyright Siemens AG 12/01
2 Required Equipment for Level 2,5e K45
GSM-Tester (CMU200 or 4400S incl. Options)
PC-incl. Monitor, Keyboard and Mouse
Bootadapter 2000/2002 (L36880-N9241-A200)
Troubleshooting Frame S/ME45 (F30032-P112-A1)
Troubleshooting Frame C45 (F30032-P135-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)
BGA Soldering equipment
Reference: Equipment recommendation V1.0
3 Required Software for Level 2,5e K45
Windows NT Version4
Winsui version1.22 or higher
Windows software for GSM-Tester ( Cats(Acterna) or CMU-GO(Rohde&Schwarz) )
Software for reference oscillator adjustment
Internet unblocking solution
V1.0 Page 6 of 54 ICM MP CC ST
K45 Company Confidential © Copyright Siemens AG 12/01
4 Radio Part
The radio part of the K45 platform consists of two different chip-sets.
They are from the companies “Hitachi” and “Infineon” The following description
will cover both chip-sets.
The logic part for both chipsets is the same.
The radio part is designed for Dual Band operation, covering EGSM900 as well
as GSM 1800 frequencies, and can be divided into 4 Blocks.
Power supply for RF-Part
Transmitter
Receiver
Synthesizer,
The RF-Part has it´s own power supply realised by a voltage regulator
which is directly to the battery. The voltages for the logic part are generated
by the Power-Supply ASIC
The transmitter part converts the I/Q base band signals supplied by the l
logic (EGOLD+) into RF-signals with characteristics as defined in the
GSM recommendation (www.etsi.org) After amplification by a power
Amplifier the signal is radiated via the internal or external antenna.
The receiver part converts the received GMSK signal supplied by the
antenna into IQ base band signals which can then be further processed by
the logic (EGOLD+).
The synthesizer generates the required frequencies for the transmitter and
Receiver. A 13MHz oscillator is acting as a reference frequency.
Restrictions:
The mobile phone can never transmit and receive in both bands
simultaneously. Only the monitor time slot can be selected independently
of the frequency band.
Transmitter and receiver can of course never operated simultaneously.
V1.0 Page 7 of 54 ICM MP CC ST
K45 Company Confidential © Copyright Siemens AG 12/01
4.1 Power Supply RF-Part
A directly to Batt+ connected voltage regulator, with a nominal output voltage
of 2.8V is used, to perform the required “RF-Voltages” named VCC2_8 and
VCC_SYN.
The voltage regulator is activated as well as deactivated via SLEEPQ and
VCXOEN provided by the EGOLD+
The temporary deactivation is used to extend the stand by time.
Blockdiagram
PIN-Out
PIN-OUT
V1.0 Page 8 of 54 ICM MP CC ST
K45 Company Confidential © Copyright Siemens AG 12/01
Type
Part No.
Signal
Source
Output
Hitachi
N840
Pin 2 SleepQ
EGOLD+ L11
Pin 1 VCC2_8
Pin 6 VCXOEN
EGOLD+ P7
Pin 7 VCC_SYN
Infineon
N970
Pin 2 SleepQ
EGOLD+ L11
Pin 1 VCC2_8
Pin 6 VCXOEN
EGOLD+ P7
Pin 7 VCC_SYN
Hitachi
Circuit diagram
V1.0 Page 9 of 54 ICM MP CC ST
K45 Company Confidential © Copyright Siemens AG 12/01
EGOLD+
V1.3
GND
GND
47K
R615
AFC
Signalform
C110
C616
100N
100N
AFC_PNM
GND
C600
10N
R600
V602
BAS170W
123
123
30K
22K
R106
4.2 Frequency generation
4.2.1 Synthesizer: The discrete VCXO (13MHz)
K45 mobiles are using two different reference frequencies. 13MHz for the Infineonand 26MHz for the Hitachi chip set.
The generation of the 13/26MHz signal is done via a discrete “Colpitts” VCXO .
This oscillator consists mainly of:
Infineon Hitachi
A 13MHz crystal Z1000 Z950 26MHz
An oscillator switch V1000 V950
A capacity diode V1002 V951
TP 1005 TP 951 after dividing by two
Infineon
The oscillator output signal is splited in two reference signals. One (VCXO) for
the PLL inside the SMARTi IC, and the other (SIN13MHZ_BB ) for the
EGOLD+ (functional M14). A de-coupling circuit C1000-C1004, L1000 is needed to
block interference signals coming from the logic.
To compensate frequency drifts (e.g. caused by temperature) the oscillator
frequency is controlled by the (AFC_PNM) signal, generated through the internal
EGOLD+ (D100 (functional R3)) PLL via the capacity diode V800.
Reference is the base station frequency.
To compensate a temperature caused frequency drift, the temperature-depending
resistor R1012 is placed near the VCXO to measure the temperature. The
measurement result TVCXO is reported to the EGOLD+(baseband l4) via R136
The required voltage VCC_SYN is provided by the N970
Hitachi
The oscillator works similar like the “Infineon”, with one exception. The oscillator
output signal (26MHz_RF) is not splited. It is directly connected to the BRIGHT IC,
(pin 40) to be divided by 2. This so gained signal SIN13MHZ_BB is used from
the EGOLD+ in the same way (generating the AFC_PNM) as the Infineon.
The required voltage VCC_OSC is provided by the N840 (VCC_SYN) through
R863 and R861
Waveform of the AFC_PNM signal from EGOLD+ to Oscillator
V1.0 Page 10 of 54 ICM MP CC ST
K45 Company Confidential © Copyright Siemens AG 12/01
Hitachi
Circuit diagram
V1.0 Page 11 of 54 ICM MP CC ST
K45 Company Confidential © Copyright Siemens AG 12/01
4.2.2 Synthesizer: LO1
The first local oscillator is needed to generate frequencies which enable the
transceiver IC to mix an “IF” and to perform the channel selection in the TX part.
To do so, a control voltage for the LO1 is used. Gained by a comparator
(located inside the Transceiver -IC).
This control voltage is a result of the comparison of the divided LO1 and a reference
Signal. The division ratio of the dividers is programmed by the EGOLD+, according
to the network channel requirements.
Infineon
The first local oscillator (LO1) is part of the PLL , which consists of the comparator
inside the Smarti (D800), a loop filter and a VCO (Z880) module.
This LO1 circuit generates frequencies from:
EGSM RX = 1285-1320MHz EGSM TX = 1304-1339MHz
PCN RX = 1445-1520MHz PCN TX = 1286-1361MHz
IF = 360MHz IF = 424 / 428MHz
Ref. Freq. = 13MHz Ref. Freq. = 13MHz
Formula to calculate the frequencies:
1st LO freq. RX EGSM = Ch. + IF 1st LO freq. TX EGSM = Ch. + IF
PCN = Ch. – IF PCN = Ch. – IF
The VCO module is switched on by the EGOLD+ signal PLLON (TDMA-Timer J12)
On demand of the network, the VCO-Module is switched with OSW (SMARTi+ (pin 21))
between GSM900 and GSM1800.
The channel programming of the PLL happens via the EGOLD+ signals SYGCCL,
SYGCDT, SYNSTR (RF Control K14, K15, M15).
The required voltage VCC_SYN is provided by the N970
Hitachi
The first local oscillator (LO1) is part of the PLL which consists of the comparator
inside the Bright (D800), a loop filter and the VCO (Z850) module.
This LO1 circuit generates frequencies from:
EGSM RX = 3520-3556MHz EGSM TX = 3608-3760MHz
PCN RX = 3610-3760MHz PCN TX = 3708-3848MHz
IF = no IF required IF-GSM = 47 or 48MHz
IF-PCN = 94 or 95MHz
Ref. Freq. = 26MHz Ref. Freq. = 26MHz
Formula to calculate the frequencies:
1st LO freq. RX EGSM = Ch. * 4 1st LO freq. TX EGSM = Ch. / 4
PCN = Ch. * 2 PCN = Ch. / 2
The VCO (Z850) is switched on by the EGOLD+ signal PLLON (TDMA-Timer J12)
via V850 and therefore supplied with VCC_SYN. The VCO guarantees by using the
control voltage at pin5 a coverage of the GSM900 and GSM1800 band.
The channel programming of the PLL happens via the EGOLD+ signals SYGCCL,
SYGCDT, SYNSTR (RF Control K14, K15, M15).
The required voltage VCC_SYN is provided by the N840
V1.0 Page 12 of 54 ICM MP CC ST
K45 Company Confidential © Copyright Siemens AG 12/01
4221
4222
13MHz to EGOLD
1
:
2
from EGOLD+
26MHz
Bright
from EGOLD+
SMARTi
13MHz
Circuit diagram
V1.0 Page 13 of 54 ICM MP CC ST
K45 Company Confidential © Copyright Siemens AG 12/01
4.2.3 Synthesizer: LO2
The second local oscillator (LO2) is required to generate IF-Frequencies for: Notes
The receiver part (the demodulator) only Infineon
The transmitter part ( the modulator)
To ensure the frequency stability, a control voltage is gained with a PLL circuit
consisting of the 2nd LO VCO, a comparator/divider and a loop-filter.
Infineon
The second local oscillator (LO2) as a part of the PLL is located mainly inside the
the SMARTi (D800). Only an external loop filter (C800,801, and R800) is required.
This LO2 circuit generates the frequencies for:
The demodulator frequency, to get the baseband signals MOD_A and MOD_B
as well as the inverted signals MOD_AX and MOD_BX
2nd LO freq. RX EGSM = 1440MHz divided by 4 = 360MHz
PCN = 1440MHz divided by 4 = 360MHz
The modulator, to get the modulator IF-Frequency for the up-conversion loop
2nd LO freq. TX EGSM = 1696MHz divided by 4 = 424MHz
EGSM = 1712MHz divided by 4 = 428MHz
PCN = 1696MHz divided by 4 = 424MHz
PCN = 1712MHz divided by 4 = 428MHz
The LO2 PLL is using the same control-unit like the LO1, so the programming and
the RX/TX-Switching is done in the same way, (via the SYGCCL, SGCDT, SYNSTR
signals).
The SMARTi and therefore the 2nd LO is switched on by the EGOLD+ signal
PLLON (TDMA-Timer J12)
The required voltage VCC_SYN is provided by the N970
Hitachi
The second local oscillator circuit (LO2) of the Hitachi chipset consists of:
The VCO, and a comparator/divider inside the Bright IC,
And an external part ( loop-filter (C830,832, and R831) and capacity
diodes V830,831).
Not requiring a RX frequency, the LO2 generates only the TX-Frequencies for the
modulator:
nd
2
LO freq. TX EGSM = 376 or 384MHz divided by 4 = 47 or 48MHz
PCN = 376 or 380MHz divided by 2 = 94 or 95MHz
To ensure frequency stability the gained control voltage is guided to the capacity
diodes.
The Hitachi version is programmed in the same way with the same signals as
described at the Infineon chipset.
The required voltage VCC_SYN is provided by the N840
V1.0 Page 14 of 54 ICM MP CC ST
K45 Company Confidential © Copyright Siemens AG 12/01
VCO
LO2
External filter LO2
Infineon
Bright
Circuit diagram
V1.0 Page 15 of 54 ICM MP CC ST
K45 Company Confidential © Copyright Siemens AG 12/01
4.2.4 Synthesizer: PLL
PLL as a part of the PMB6253 (SMARTi+) IC
Blockdiagram
V1.0 Page 16 of 54 ICM MP CC ST
K45 Company Confidential © Copyright Siemens AG 12/01
PLL as a part of the BRIGHT IC
Blockdiagram
V1.0 Page 17 of 54 ICM MP CC ST
K45 Company Confidential © Copyright Siemens AG 12/01
Loading...