Siemens M65, CX65, C65 Service Manual

Company Confidential

Service Repair Documentation

Level 2.5e – HIT – C65, CX65, M65

Release Date Department Notes to change

1.0 01.06.2004 ICM MP CCQ GRM T New document

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Service Repair Documentation Level 2.5e – HIT – C65, CX65 and M65

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Table of Contents:

1 List of available level 2,5e parts C65, CX65, M65 ........................................................3

2 Required Equipment for Level 2,5e...............................................................................4

3 Required Software for Level 2,5e C65, CX65, M65 ......................................................4

4 Radio Part.....................................................................................................................5

5 Logic / Control............................................................................................................. 18

6 Power Supply.............................................................................................................. 25

7 Camera .......................................................................................................................28

8 Camera – Display Interface Module............................................................................ 28

9 Display Modules..........................................................................................................30

10 Illumination.................................................................................................................. 32

11 Interfaces ....................................................................................................................34

12 Keyboard ....................................................................................................................40

Service Repair Documentation Level 2.5e – HIT – C65, CX65 and M65

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1 List of available level 2,5e parts C65, CX65, M65

Component Typ/Circuit Part Mobile Phone Component Details ID Partnumber

ASIC C65, M65 Camera Interface_S1D13716B02 D3601 L36820-U6054-D670

Power Supply D1094DA ASIC C65, CX65, M65 ASIC CX65 Camera Interface_S1D13716B01 D3601 L36820-U6052-D670 Cap_Diode_26MHz_Circuit C65, CX65, M65 Cap_Diode_1SV305 V3961 L36840-D61-D670 Capacitor_Camera_Circuit CX65, M65 Capacitor 2*2U2 C3609 L36344-F1225-M12 Capacitor_Mozart_Twigo_Circuit C65, CX65, M65 Capacitor 2*2U2 C1304 L36344-F1225-M12 Capacitor_Mozart_Twigo_Circuit C65, CX65, M65 Capacitor 2*2U2 C1315 L36344-F1225-M12 Capacitor_Mozart_Twigo_Circuit C65, CX65, M65 Capacitor 2*2U2 C1318 L36344-F1225-M12 Capacitor_Mozart_Twigo_Circuit C65, CX65, M65 Capacitor 2*2U2 C1329 L36344-F1225-M12 Capacitor_Mozart_Twigo_Circuit C65, CX65, M65 Capacitor 2*2U2 C1330 L36344-F1225-M12 Capacitor_Mozart_Twigo_Circuit C65 Capacitor 2*2U2 C1331 L36344-F1225-M12 Capacitor_Mozart_Twigo_Circuit C65, CX65, M65 Capacitor 2*2U2 C1332 L36344-F1225-M12 Coil_BATT+ C65, CX65, M65 Coil BKP1608HS391 L1300 L36140-F2100-Y6 Coil_BATT+ C65, CX65, M65 Coil BKP1608HS391 L1318 L36140-F2100-Y6 Coil_VBOOST C65, CX65, M65 Coil BKP1608HS391 L1331 L36140-F2100-Y6 Coil_VBOOST C65, CX65, M65 Coil 4U7 L1302 L36151-F5472-M1 Coil_VBUCK C65, CX65, M65 Coil 10U L1301 L36151-F5103-M3 Diode_Battery_Interface C65, CX65, M65 Diode BAV99T V1400 L36840-D66-D670 Diode_SIM_Circuit C65, CX65, M65 Diode ZENER EMZ6.8E V1605 L36840-D3088-D670 Diode_VBOOST C65, CX65, M65 Diode BAT760 V1303 L36840-D5076-D670 Diode_VBUCK C65, CX65, M65 Diode BAT760 V1302 L36840-D5076-D670 Diode_Vibra_Circuit CX65, M65 Diode BAV99T V2100 L36840-D66-D670 Filter_IO Interface C65, CX65, M65 EMI_EMV_Filter_IP4559CX25 Z1500 L36820-L6147-D670 IC MODUL PA C65, CX65, M65 PF08140B SMD N3981 L36851-Z2002-A63 IC_FEM C65, CX65, M65 FEM HITACHI GSM900 1800 1900 N3901 L36145-K280-Y258 IC_Processor_SGOLDLITELITE C65, CX65, M65 PMB8875 V1X D1000 L36810-G6191-D670 IC_Transceiver C65, CX65, M65 HD155155NPEB N3921 L36820-L6142-D670 Oszillator_RF_Logic C65, CX65, M65 Oszillator_26MHz Z3961 L36145-F260-Y17 Oszillator_RTC C65, CX65, M65 Oszillator_32,768KHZ Z1000 L36145-F102-Y21 Resistor_Temp_TVCXO C65, CX65, M65 Resistor_Temp 22k R R3967 L36120-F4223-H Switch_USB C65, CX65, M65 NC7WB66K8X DUAL BUS SWITCH N1501 L36810-B6132-D670 Trans_Charge_Circuit C65, CX65, M65 Transistor SI5933DC V1305 L36830-C1107-D670 Trans_DISPLAY_BACKLIGHT C65, CX65, M65 Transistor EMB9/PEMB9 V2303 L36840-C4059-D670 Trans_DISPLAY_BACKLIGHT C65 Transistor BC847BS BC846S V2302 L36840-C4061-D670 Trans_DISPLAY_BACKLIGHT C65, CX65 Transistor BC847BS/BC846S V2821 L36840-C4061-D670 Trans_DISPLAY_BACKLIGHT CX65, M65 Transistor BCS 46S V2302 L36840-C4014-D670 Trans_DISPLAY_BACKLIGHT M65 Transistor FDG6303N SI1902DL V2821 L36830-C1112-D670 Trans_NIGHT_DESIGN_LIGHT CX65, M65 Transistor FDG6303N SI1902DL V2404 L36830-C1112-D670 Trans_V2.65V C65, CX65, M65 Transistor EMD12 V1500 L36840-C4057-D670 Trans_VBOOST C65, CX65, M65 Transistor FDG313N V1304 L36830-C1121-D670 Volt.Regulator_Camera C65 Volt.Reg. LP3985ITLX-2.9 N3600 L36810-C6134-D670 Volt.Regulator_Camera CX65, M65 Volt.Reg. LP1986_2*2.85V N3600 L36810-C6065-D670

MOZART_TWIGO4

D1300 L36145-J4683-Y19

Service Repair Documentation Level 2.5e – HIT – C65, CX65 and M65

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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 C65 (F30032-P377-A1)

- Troubleshooting Frame CX65, M65 (F30032-P343-A1)

- Power Supply (at least one GRT required 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 Version X (newest version) (downloadable from the technical support page)

3 Required Software for Level 2,5e C65, CX65, M65

- Winsui for 65series

- Software for GSM-Tester (GRT)

- Software for reference oscillator adjustment

- Internet unblocking solution (JPICS)

- Dongle driver for dongle protected Siemens software tools

Service Repair Documentation Level 2.5e – HIT – C65, CX65 and M65

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4 Radio Part

The radio part realizes the conversion of the GMSK-HF-signals from the antenna to the base-band and vice versa.

In the receiving direction, the signals are split in the I- and Q-component and led to the D/Aconverter 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 two bands is impossible. Simultaneous transmission in two bands 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 of the C65, CX65 and M65 are dimensioned for triple band operation (EGSM900, GSM1800, GSM1900) supporting GPRS functionality up to multiclass 10.

The RF-circuit consists of the following components:

• Hitachi Bright VE chip set with the following functionality:

o PLL for local oscillator LO1 and LO2 and TxVCO o Integrated local oscillators LO1, LO2 (without loop filter) o Integrated TxVCO (without loop filter and core inductors for GSM) o Direct conversion receiver including LNA, DC-mixer, channel filtering and PGC-

amplifier

o Active part of 26 MHz reference oscillator

• Hitachi LTCC transmitter power amplifier with integrated power control circuitry

• Hitachi Frontend-Module including RX-/TX-switch and EGSM900 / GSM1800 / GSM

1900 receiver SAW-filters

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

Service Repair Documentation Level 2.5e – HIT – C65, CX65 and M65

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4.1 Block diagram RF part

65er Serie

internal

antenna

Service Repair Documentation Level 2.5e – HIT – C65, CX65 and M65

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4.2 Power Supply RF-Part

The voltage regulator for the RF-part is located inside the ASIC D1300.(see chapter 5.2).It generates the required 2,85V “RF-Voltage” named VDD_RF1(VDD_BRIGHT). The voltage regulator is activated as well as deactivated via VCXOEN_UC The temporary deactivation is used to extend the stand by time.

Circuit diagram

(Functional F23) provided by the SGOLDLITE+.

VDD_RF1

4.3 Frequency generation

4.3.1 Synthesizer: The discrete VCXO (26MHz)

The C65, CX65 and M65 mobile is using a reference frequency of 26MHz. The generation of the 26MHz signal is done via a VCXO. This oscillator consists mainly of:

A 26MHz VCXO Z3961 A capacity diode V3961

TP (test point) of the 26MHz signal is the TP 3920

The oscillator output signal 26MHz_RF is directly connected to the BRIGHT IC (pin 35) to be used as reference frequency inside the Bright (PLL). The signal leaves the Bright IC as RF_SIN26M (pin

31) to be further used from the SGOLDLITE+ (D171

(Functional AE15)).

Bright In

Service Repair Documentation Level 2.5e – HIT – C65, CX65 and M65

SGOLDLIT

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To compensate frequency drifts (e.g. caused by temperature) the oscillator frequency is controlled by a (RF_AFC) signal, generated through the internal SGOLDLITE+ (D171 the capacity diode V3961. Reference for the “SGOLDLITE-PLL” is the base station frequency received via the Frequency Correction Burst. To compensate a temperature caused frequency drift, the temperature-depending resistor R3967 is placed near the VCXO to measure the temperature. The measurement result TVCXO is reported to the SGOLDLITE+

(Analog Interface M25) via R3967.

Waveform of the AFC_PNM signal from SGOLDLITE+ to Oscillator

Signalform

SGOLDLITE+

R3966

FC_PNM

C3966

GND

R3965

GND

R3964

C3965

(Functional A9)) PLL via

R3963

GND

4.3.2 Synthesizer: RFVCO(LO1)

The first local oscillator (LO1) consists of a PLL and VCO inside Bright (N3921) and an external loop filter 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. 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.

RF VCO

OUT

3476 - 3980

external

Loopfilter

Bright V

MHz

RF PLL

PFD

26MHz

3 wire bus

from EGOLD

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Service Repair Documentation Level 2.5e – HIT – C65, CX65 and M65

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Matrix to calculate the TX and RX frequencies

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

4.3.3 Synthesizer: IFVCO(LO2)

The second local oscillator (LO2) consists of a PLL and a VCO which are integrated in Bright and a second order loopfilter which is realized external (R3927; C3940; C3948). 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 powerup of the VCO is controlled via the tree-wire-bus of Bright (SGOLDLITE+ signals RFDATA;

RFCLK; RFSTR). To ensure the frequency stability, the 640MHz VCO signal is compared

by the phase detector of the 2 signal passes the external loop filter and is used to control the 640/656MHz VCO.

640 - 656 MHz

external

Loopfilter

Bright V

PLL with the 26Mhz reference signal. The resulting control

IF VCO

OUT

IF PLL

3 wire bus

PFD

from EGOLD

Service Repair Documentation Level 2.5e – HIT – C65, CX65 and M65

26MHz

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4.3.4 Synthesizer: PLL

The frequency-step is 400 kHz in GSM1800/GSM1900 mode and 800kHz in EGSM900 mode due to the internal divider by two for GSM1800/GSM19000 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 phasenoiseperformance. The PLL is controlled via the tree-wire-bus of Bright.

4.4 Antenna switch (electrical/mechanical)

Internal/External <> Receiver/Transmitter The mobile have two antenna switches. a) The mechanical antenna switch for the differentiation between the internal and

external antenna, which is used only RF adjustment.

b) The electrical antenna switch, for the differentiation between the receiving and

transmitting signals. To activate the correct settings of this diplexer, the SGOLDLITE+ signals RF_SW and TXON_GSM are required

External Antenna

ntenna

to / from FEM

Internal antenna

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The electrical antenna switch

N3901:

from PA

Top View

Switching Matrix Pin assignment

to Bright

Service Repair Documentation Level 2.5e – HIT – C65, CX65 and M65

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4.5 Receiver

Receiver: Filter to Demodulator

The band filters are located inside the frontend module (N3901). The filters are centred to the band frequencies. The symmetrical filter output is matched to the LNA input of the Bright (N3921).The Bright VE incorporates three RF LNAs for GSM850/EGSM900, GSM1800 and GSM1900 operation. The LNA/mixer can be switched in High- and Low-mode to perform an amplification of ~ 20dB. For the “High Gain“ state the mixers are optimised to conversion gain and noise figure, in the “Low Gain“ state the mixers are optimised to large-signal behaviour for operation at a high input level. The Bright performs a direct conversion mixers which are IQ-demodulators. For the demodulation of the received GSM signals the LO1 is required. The channel depending LO1 frequencies for 1800MHz/1900MHz bands are divided by 2 and by 4 for 850MHG/900MHz band. Furthermore the IC includes a programmable gain baseband amplifier PGA (90 dB range, 2dB steps) with automatic DCoffset calibration. LNA and PGA are controlled via SGOLDLITE+ signals RFDATA; RFCLK;

RFSTR(RF_Ctrl C8, B10, B12). The channel-filtering is realized inside the chip with a three stage

baseband filter for both IQ chains. Only two capacitors which are part of the first passive RC-filters are external. The second and third filters are active filters and are fully integrated. The IQ receive signals are fed into the A/D converters in the EGAIM part of SGOLDLITE+. The post-switched logic measures the level of the demodulated baseband signal and regulates the level to a defined value by varying the PGA amplification and switching the appropriate LNA gains.

From the antenna switch, up to the demodulator the received signal passes the following blocks to get the demodulated baseband signals for the SGOLDLITE+:

Filter

N3901 Bright(N3921)

LNA

Demodulator

PGC

Service Repair Documentation Level 2.5e – HIT – C65, CX65 and M65

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