Siemens M35 Series Service Manual

Local Service Organization Service Manual

M 3 5 S e r i e s

M 3 5 S e r i e s

S I E M E N S C O M M U N I C A T I O N S U N L I M I T E D

V1.0

Table of Content

C H A P T E R 1

Cellular Communication

Coverage Concept 1

GSM Network Architecture 2

Subscriber Identity Module 3

SIM Application Toolkit 4

Extended GSM 900 - EGSM 5

Built-in Modem 5

Data Application 6

C H A P T E R 2

Level 2 Service Guide

Introduction 7

M35 Series Technical Information 8

Accessories 10

General Information 11

M35 Series Exploded Diagram 13

Mechanical Concept 14

Hardware Concept – Block diagram 15

Hardware Description 16

Power Supply Concept 18

Over voltage Condition 18

Battery Charging 18

Short Circuit Protection 19

Normal Charging 19

Deep Discharge Battery 20

M35i Spare Parts Level 1 & Level 2 21

Disassemble the M35 22

Disassemble/Assemble Lower Housing 24

Disassemble/Assemble Control Board Assy 24

Disassemble/Assemble Display Module 25

Disassemble/Assemble Upper Housing 26

Assemble the M35 27

Mobile Software Programming 29

Language Groups 31

Customer Specific Initialization 33

International Mobile Equipment Identity 33

Phone Unblocking 34

C H A P T E R 3

Siemens Service Equipment

Introduction 36

Other equipment 38

Software Installation 39

Configuring the test software 40

Running the test sequence 41

ANNEX A 45

ANNEX B 48

C H A P T E R 4

Level 2.5 Repair Document

Introduction 49

Antenna Connector 51

Ringer 54

Bottom Connector (Lumberg) 57

Display Connector 61

Keyboard LED 65

Display LED 68

Infrared Diodes 72

ANNEX C

PC Adapter Cable & Accessories M35 75

Power Plug for M35 76

Car installation Ratio Unit, M35 77

Car Installation kit Handfree kit 78

Car Installation kit Handfree Pro. 79

Car Installation Comfort GPS, M35 80

References 82

V1.0 ii

Cellular Communication

Coverage Concept.

he cellular systems is made up of numerous transmitting and receiving
sites, whose individual coverage areas partially overlap. The concept

of frequency re-use, same frequency is used by several sites, allows a
high traffic density in a wide area. Due to the limited transmission range of the
terminals, cellular systems are based on a large number of base stations on
the infrastructure side, scattered over the area to cover, with each covering a
fairly small geographical zone called cell. Cells are often represented by
hexagons (see figure 1.1.).

T

FIGURE 1.1 CELLULAR COVERAGE REPRESENTATION.

V1.0 iii

Chapter

1

GSM Network Architecture.

GSM network can be broadly divided into three broad parts, namely:

1. Mobile Station(MS) carried by the subscriber,

2. Base Station Sub-system(BSS) which controls the radio link with the mobile station.

3. Mobile Switching Center(MSC) which performs the switching of calls between the mobile
users, and between mobile and fixed network users.

FIGURE 1.2 GSM ARCHITECTURE

Each mobile station is given a unique identity. As soon as the mobile phone is turned on, it
registers with the network and is authenticated, as such the network could always find the mobile
phone.
Larger amount of data is being exchanged to and from the following functional blocks in the
MSC:

Visitor Location Register, VLR

Stores information about mobile subscribers that enter it coverage area which is associated with
the geographical area where the mobile is currently roaming. When there is an incoming call for
the mobile, the HLR is interrogated about the present address of the VLR.

Home Location Register, HLR

A database that contains all data concerning the subscription of the mobile subscriber, i.e. their
access capabilities, subscribed services, and supplementary services. It also contains
information about the VLR that is handling the mobile station currently. When the mobile
changes location, the HLR is updated accordingly. It also provides the MSC with information
about the MSC area where the mobile is actually located to allow incoming calls to be routed
immediately to the called party.

Authentication Center, AUC

Stored information that is necessary to protect communication through the air interface against
any intrusions. The legitimacy of the subscriber is established through authentication and
ciphering, which protects the user information against unwanted disclosure.

Equipment Identity Register, EIR

An option the network operator can use to enforce security. With this feature the network can
identify defective or stolen mobile that may not be used in the network.

Subscriber Identity Module(SIM)

SIM is a smart card which has a computer and memory chip that is permanently installed in the
mobile equipment. It comes in either the size of a credit card or smaller version known as the
plug-in SIM.

The subscriber information, which includes a unique number called the International Mobile
Subscriber Identity (IMSI) is stored in the SIM card. SIM card identifies the subscriber to the
network.

FIGURE 1.3 INSERT SIM CARD

Figure 1.3 illustrates the steps for inserting the SIM card into the M35i series.



To protect the SIM card from improper use, a security feature, a four digits personal identification
number(PIN), is built in. The PIN is stored in the card and can be changed by the subscriber.
PIN2 is required for additional funtions available with a special SIM card (Consult the operator for
more information about the PIN.

A code (PUK) is provided for unlocking the SIM card if the SIM card is blocked

Change PIN Procedures.

CHART 1.1 PIN CONTROL

SIM Application Toolkit

SIM Applications Toolkit (SAT) allows the flexibility to update the SIM, to change the services
and download new services over the air. In the SAT specification, the short message service is a
key mechanism for personalizing the SIM in each user’s GSM phone. It is designed as a client­server application. M35i series supports SAT Class 3 specification.

€

MENU

SETUP

SECURITY

CODES

CHANGE PIN CHANGE PIN2

{ENTER PIN NUMBER}

CHANGE

{ENTER NEW PIN} AND PRESS OK KEY.

{ENTER NEW PIN) AND PRESS OK KEY.

When active, the name of the service may appear in the menu, and there will be sub-menu if
more than one application is active. Figure 1.4 is the SAT icon.

FIGURE 1.4 SAT ICON

Extended GSM 900, E-GSM

This is a new standard that allows Network Operators to increase their capacity through an
extended frequency. The frequency range of E-GSM is as follows:

• Mobile Transmit: 880 – 915 MHz

• Mobile Receive: 925 – 960 MHz

M35i series is a GSM Phase 2 / Phase 2+ Dualband E-GSM / GSM 1800 mobile phone.

Built-in Modem.

M35i has an integrated modem for direct data communication using the data cable as shown in
Figure 1.5. M35 do not have the built–in soft modem for Data Service of GSM network.

FIGURE 1.5 DATA CABLE.

Data Application Support

Modem driver conforms to V.25 command set, and transmission speed conforms ITU-T­standard of V.22bis. (2400, 4800,and 9600 bits/sec).

Facsimile conforms to Service Class 1, group 3 and operate at 2400, 4800, 7200 and 9600 bit/s.

Data services via GSM network up to 9600 kbps, and remote control using cellular AT
commands.

Internet access via the M35i is possible with the inclusion of Wireless Application Protocol (WAP)
browser 1.1.

Level 2 Service Guide

Introduction

The chapter is intended to help you carry out repair up to Level 2 on the M35 series mobile
phone.

The repair for international version and Asian variants are identical unless otherwise noted,
therefore the description herein is confined to M35i only.

All repairs have to be carried out in an environment set up

according to ESD regulations defined in international standards.

ESD procedure is available from your Service Manager. Ask for

ASC/T001/98

Chapter

2

e

M35i Technical Information

System GSM Phase 2, Dual Band

EGSM 900, Class 4(2 Watt)
GSM 1800, Class 1(1 Watt)

Operating Voltage 3.6V

Size(LxWxH) 118 x 47 x 22.6 mm

Volume 99cm3 including battery (approx)

Weight 130g including battery (approx)

Battery(Standard) NiMH, 500mAH(Standard)

Li-Ion, 600mAH(Optional)

Standby time

1

50 to 180 hours (standard battery)

Talk time

1

90 to 300 minutes (standard battery)

Charging Time 2 hours

SIM support Plug in card 1.8 V or 3V, SIM Application Tool Kit Class 3

Antenna Integrated.

Speech codec Triple rate Enhance Full Rate

Full Rate
Half Rate

Display 101 x 54 pixel graphical display with up to 5 lines

12 x 12 font size for Chinese

Keypad 12 numeric keys(10 numeric, #, *)

3 function keys(Send, End-ON/OFF, Phonebook)
4 multifunctional softkeys

Key Sound Click/DTMF/None

Key Lock Activation and Deactivation by #-key or

Automatic.

1

Actual time dependent on the network.

Dialing 10 redial numbers

Last 10 incoming with date/time stamp
Last 10 outgoing calls
Last 10 missed calls with date/time stamp

Ringer On/Beep/Off

Up to 22 melodies and 5 volume settings
(Melody Composer and Crescendo Ringing)

Volume Adjustable in 4 levels during call via softkey

Silent Alert Built-in vibrator

Phone Book Storage depends on the SIM card capacity

Storage of up to 100 list in the phone.

SMS Support MT, MO, CB

Predictive Text Input, Tegic T9.

Supplementary Call Forwarding, Call Hold, Call Wait,
Services Multiparty Conference, CLIP, CLIR, AoCC

AoCI, FDN, LND USSD and SAT

Ciphering A5/1 and A5/2 supported

PIN control PIN 1 & 2 Code Control

Phone code 4 to 8 digit code

Network function Automatic and manual network selection

Chipset Siemens E – GOLD

WAP Browser

1

Version 1.1

Other FeaturesClock / Alarm

Alarm List

2

Built-in modem

3

Calculator

4

Currency Converter
4 Games
7 User Profiles

1

Only for Model M35i.

2

Not available in M35 International version.

3

Not available in M35 International version.

4

Not available in M35 International version.

Accessories:

1. Standard Battery L36880-N4001-A100

2. Optional Battery L36880-N4001-A101

3. Standard Charger L36280-Z4-CXXX (Country Variant)

4. Travel Charger L36880-N4001-A103 (EU) / A104 (UK)
Similar to standard charger with an universal input voltage from 90 ~ 240V

4. Desk Top Charger L36880-N4001-A102

5. Belt Clip L36880-N4001-A113

6. Headset L36880-N4001-A123

7. Antenna Cradle L36880-N4001-A110

8. Car Charger Cable L36880-N4001-A108

9. Car Kit Portable

1

L36880-N3015-A117

10. Car Kit Comfort L36880-N4001-A111

11.Car Handset

2

L36880-N3015-A123

12. Designer Cases L36880-N4001-A119

13. Soft Data Link 3.0 L36880-N4001-A122 (Not for 3518i)

14.Data Cable

3

L36880-N3101-A102

15. Car Kit Professional Voice L36880-N4001-A124

16.Data Cable Professional

4

L36880-N3101-A112

1

Same as C25(88)

2

Same as C25(88)

3

Same as C25(88)

4

Same as C25(88)

General Information

Information

Due to different requirements of the markets, the M35 has different variants, which broadly
classified under International version and Asian version. Marketing name for international version
is M35 or M35i, whereas Asian version is named M3508 or M3508i.

Difference between M35(18) and M35(18)i

M35(18)i mobile software has WAP Browser 1.1 incorporated thus enabling user to surf the
Internet and it have the built-in soft modem for GSM Data Service. The non-Wap M35(18) do not
have the soft modem.

The differences between the M35 and M35i are the hardware and software. The memory size of
M35 is 16MB and that of M35i is 32MB.

There are also two variants for 3518, one without the WAP browser is 3518 and that with WAP
browser version 1.1 is 3518i.

Wireless Application Protocol, WAP.

Wireless Application Protocol takes a client-server approach that uses the in-built micro-browser
to make a request, in wireless markup language (WML), for information or service. The request
is passed to a WAP Gateway which then retrieves the information from a Internet server, in
HTML format, and translate it into WML. The requested information is then sent to from the WAP
Gateway to WAP client (mobile) using the available and most appropriate mobile network bearer
services.

Wireless Protocol Stack.

Wireless Application Environment (WAE)
Wireless Session Protocol (WSP)
Wireless Transaction Protocol (WTP)
Wireless Transport Layer Security (WTLS)
Wireless Datagram Protocol (WDP)
Bearers e.g. Data, SMS, USSD

TABLE 1..1 WAP PROTOCOL STACK

1. Wireless Application Environment

Defines the user interface on the phone. WAE contains the WML,WML script and the
wireless telephony application (WTA).

2. Wirelss Session Protocol

Link the WAE to two session services – one connection oriented operating above the WTP
and a connectionless service operating above WDP.

3. Wireless Transaction Protocol

Runs on top of the datagram service and part of the standard suite of TCP/IP protocols, to
provide a simplified protocol suitable for low bandwidth mobile station.

4. Wireless Transport Layer Security

WTLS incorporates security features that are based upon the established Transport layer
Security (TLS) protocol standard, that include data integrity checks, privacy on the WAP
Gateway to client leg and authentication.

5. Wireless Datagram Protocol

Allows WAP to be bearer independent by adapting the transport layer of the under-laying
bearer. WDP presents a consistent data format to the higher layer on the WAP stack.

M35 Series Mechanical Diagram

FIGURE 2.1 M35I MECHANICAL DIAGRAM.

Please take note that the number(s) used here IS NOT the part

number, DO NOT used it in your spare parts purchase order.

A l w a y s r e f e r t o t he S E RV I C E P A RT PR I C E L IS T

f o r y o u r s p a r e p a rt o r d e r .



Mechanical Concept

Note: All numbers refer to mechanical drawing in Figure 2.1.

The mechanical concept of the M35 differs in various points from the one of the other Siemens
mobile telephones.

The first thing you will experience is how the housing is locked. In M35 no screws are used to
keep the housing closed. Also inside the telephone no screws are used anymore. To open the
housing, which is kept closed by catches only, a special opening tool has been defined. Once
the phone is open the catches will be damage and a new housing need to be used. For details
on disassembly tool please refer to Photo 2.5 in the Disassembly Section of this chapter.

Inside, the M35 consists of just one board (1010) which carries display module(1170), control
part and RF section of the mobile.

The display module (1170) is connected to the board by a flexible cable which is inserted into a
plug. In case the display is defective electrically or mechanically it can be exchanged very easily.

M35i does have an external connector of a new type. Since S6 a so called “Molex”-connector
was used, which also offered the possibility to connect an external antenna to it. The new
“Lumberg”-connector which is used in M35 does not feature such a connection, because the
connector for external antenna is located at the back side of the upper end of the mobile, close
to the internal antenna. As a consequence of this there is no need anymore for a RF cable
mounted to the board nor for a RF plug on it to connect this cable. This improves RF-properties
of the mobile and lowers production costs.

To be able to do measurements on and software update of the telephone, an adapter cable
between Molex and Lumberg connector will be available. See photos in Additional Tools of
Chapter 3.

M35 antenna is an integral part of the lower case shell (1030). The antenna can only be
changed by open up the M35i phone and replace the housing.

The M35i is a dual-band mobile operating on GSM900 and

GSM1800, the antenna is an integral part of the lower housing.

The keypad, the microphone and the loudspeaker are mounted into the upper case shell (1020).
Make sure that the microphone and the earphone contact springs are not dirty or damaged
during repair process.

The dust protection frame and the display window are included in the display module(1170).



Hardware Concept – Block Diagram

FIGURE 2.2 M35 BLOCK DIAGRAM.

Hardware Description

The handset consists of the following major integrated circuits:

1) E-GOLD – PMB2851E

This IC is a combination of microprocessor, signal processor and real-time clock.

The microprocessor part of this component is responsible for controlling the keyboard, SIM­Card, Flash and RAM. Furthermore it controls the power saving, power up/power down of the
RF module and sets the amplification of the PA.

The signal processor part of PMB 2851E is responsible for processing the Rx I/Q signals
(filtering, equalizing, speech and channel decoding).
Furthermore it does the speech and channel encoding and the GSMK modulation of the Tx
I/Q signals. The Voice CODEC part is used to realize advanced features regarding coding of
the speech signal. These are:

• Halfrate-Encoding

• Halfrate-Decoding

• Enhanced Fullrate Encoding

• Enhanced Fullrate Decoding

• Voice Activity Detection

• Comfort Noise

2) GAIM – PMB2906

The GAIM (GAIM = GSM Analog Interfacing Module) provides the interface between the
analogue and its digital representation signals (Base-band I/Q, Voice-band, PA-control,
Voltage & Temperature Measurement - Charging control).

3) 13Mhz Ref Oscillator Circuit -

This circuit provides the following main functions:

• Generate 13Mhz clock signal for Logic Circuits – SIN13M.

• Generate 13Mhz reference signal for the PLL circuits for the Tx & Rx of GSM RF signal.

• Received the frequency steering control AFC_PNM from the HiGOLD IC for fine tuning

of the Tx & Rx frequency.

• Temperature dependent resistor sited near the 13MHz oscillator measure the

environment temperature.

4) Power Supply ASIC – D0767BA

This circuit provides the following main functions:

• Control of switch on of the Mobile phone by ON/OFF button, Ext Power (Charger) or real

time clock.

• Watchdog monitor – switch off the mobile phone if no proper Watchdog signal send from

HiGOLD IC.

• Voltage supply to the logic circuits – 2.90V, 2.65V & 1.92V, Simcard & real time clock in

HiGOLD IC.

• Switch on the linear regulator to supply the 2.8V for the13Mhz Oscillator circuit.

• RESET signal for the logic circuit.

• Charge control signal for switching the charge FET.

• Low battery detector.

• Over voltage protection.

5) Receiver Circuit – Bright II HD155124F

This circuit provides the following main functions:

• Low Noise Amplifier (LNA) with a fixed amplification of +20dB to amplify the input RF

signal.

• Mixer to mix down the RF signal to the Intermediate Frequency (IF)

• Programmable IF amplifier with a dynamic range of 60dB ( -10dB ~+50dB in steps of

2dB).

• Mixer to mix down the IF signal to the baseband, generating and inphase (I) and a

quadrature (Q) signal and feed the GAIM IC base-band signal, RX I/Q for the decoding
of the digital signal for the HiGOLD IC.

6) Transmitter Circuit – Bright II HD155124F

The GAIM IC generate the MOD I/Q base-band signal under the control of the HiGOLD IC
and feed the IQ modulator of the Bright II IC. The Bright II IC provides the IF synthesizer,
the I/Q modulator, prescaler to regulate the dual-band TX-VCO and feed the modulated GSM
signal to the PA.

The telephone support only 1.8V and 3V SIM card

For user with 5V SIM card, he need to upgrade the SIM card

through his service provider/network operator



Power Supply Concept

The M35i has two main power inputs:

1. Battery voltage(3.6V) connected at the battery contact

2. Charging voltage(6.5V) delivered by the different charger type(see Accessory List) via the
Lumberg connector at the bottom of the telephone.

Since the battery voltage is supplying the power supply ASIC, it is always needed to operate the
phone. You cannot switch on the handset if the battery voltage is not present.

From the battery voltage, all other supply voltages are derived and controlled by the power
supply ASIC.

The RF power amplifier is directly connect to the battery, a bad battery with high internal
resistance can cause malfunction of the M35i phone.

The Logic module uses 1.92V, 2.65V & 2.9V generated by voltage regulators inside the ASIC.

Furthermore, the ASIC generates the supply voltage for the SIM card and the RESET signal for
the logic devices.

The ASIC also checks the presence of the watchdog signal from the microprocessor and
provides the switching on functionality (ON_OFF button or Ignition signal).

Wrong polarity or battery voltage setting that exceed the +6.5V

could damage the phone.

Over-voltage Condition

• Battery voltage

If the supply voltage rises above 6.2V, the phone will switch off and it cannot be switched on
again before the voltage is lower than 6.2V. If the supply voltage rises above 7V, the phone
can be damaged

• Charging Current

The charging current must not rise above 1A or a track fuse in the phone will blow. As a
result charging the battery will no longer by possible.

Be careful with NON-original SIEMENS accessories or chargers.

Make sure that the charging current is limited to value below 1A.





Battery Charging

M35 series uses a Nickel Metal Hyride (NiMH) 500mAH battery pack as standard battery. It also
support the Lithium Ion 600mAH battery pack (For S35i phone) as optional battery for customer
want longer talk time.

PHOTO 2.3 M35i SERIES INSERTING BATTERY.

For M35, BATT+ has a voltage level from +3.0V to 5.5V, and a BATT_TEMP contact is used for
detecting abnormal increase in temperature of the battery.

If the temperature is too high or too low, there is a high probability

that the battery is not charged. To enable the charging process

again, battery and phone needs to cools down or warm up. Battery

replacement is not required.

A v o i d s h o r t i n g t h e b a t t e r y t er m i n a l s .

Short Circuit Protection

For the Nickel Metal Hydride battery, a polyswitch in the battery pack protecting the battery from
short circuit and it should reset by itself after some time removing the short circuit.

For the Lithium Ion battery, it is short-circuit protected by an electronics fuse. The fuse will be
activated in case a too high current is drawn. This fuse will not reset automatically.

The resetting of the L-ion battery fuse can be done with either of the following procedures:

1. Insert the battery into the M35 and then connect the rapid charger to the phone. Wait for
approximately 10 second, then the mobile can be turned on again.

2. Plug the battery separately into the desktop charger. The fuse is reset immediately.

3. Insert the battery into the M35 and put the phone into the desktop charger. Wait for
approximately 10 second, then the mobile can be switched on.

Normal Charging

The battery can be charged when it is inserted into the phone. The charging process is
completely controlled by the mobile. Charging can be done with any of the following accessory:

1. Rapid charger

2. Travel charger

3. Car charger

4. Desktop charger



PHOTO 2.4 INSERT CHARGER

Photo 2.4 shows the correct way of inserting and removing the charger plug.

Deep Discharge Battery

In case of a deeply discharged battery, the voltage of the battery is too low to operate the
charging circuit and the display controller, the phone can not be turned on and the normal
charging process can not be started. No charging symbol is visible in the display.

In this case, charging the battery is divided into two different steps, which have to be run
subsequently:

a) Trickle charge for M35 Phone

Trickle charge mode is automatically started if the battery voltage is below 3.0V when the
charger is connected to the mobile. The charging current in Trickle mode is appr. 10mA.

Trickle charge mode has to last minimum until the battery voltage has exceeded 3.2V,
then the phone will switch on and the charging icon appear. During trickle charge the
charging symbol will not be visible and the telephone can not be turned on. This is
because the battery voltage is too low to operate the telephone.

Action:

Insert battery into handset and connect travel charger to the telephone. If within 4 hours
the battery voltage is high enough again, the charging symbol will come up.

If the battery is discharged very deeply, the symbol may not come up and the trickle
charge time possibly has to be extended up to 24 hours.

b) Normal charge

When the battery voltage is above the a.m. value (e.g. by trickle charge) the mobile will
start the normal charging mode and show a charging symbol in the display. * Always
normal charge a new battery or a deep discharged battery for more then 12 hours before
first use.

Action:

Connect charger to the telephone (see section on Charging).

The charging symbol will come up as an indication that the normal charging process has
been started by the mobile.

Mobile Phone M35 Spare Parts Level 1 and Level 2

Level 1 Part No.

L36158-A33-C101 Display Cover (Displaymodule) C35/C35i/M35i
L36158-A33-C103 Display Sealing (Displaymodule) C35/C35i/M35i
L36158-A36-A1 Upper Case Shell M35i blue
L36158-A36-A4 Upper Case Shell M35i yellow
L36158-A36-A5 Upper Case Shell M35i grey
L36158-A36-A12 Upper Case Shell M35 (China) grey black

L36158-A36-A30 Lower Case Shell M35i dark blue (including antenna)

L36158-A36-A31 Lower Case Shell M35i yellow blue (including antenna)

L36158-A36-A32 Lower Case Shell M35i grey black (including antenna)

L36158-A36-A40 Battery Cover M35 blue
L36158-A36-A43 Battery Cover M35i yellow blue
L36158-A36-A44 Battery Cover M35 grey black
L36158-A36-B70 Keypad M35
L36158-A36-B72 Keypad 3518
L36158-A36-B299 Splash water covers M35i (set)
L36158-A36-C250 Battery Sealing M35
L36158-A36-C260 Buzzer Sealing M35
L36158-A36-C280 Case Sealing M35
L36212-Z3-C34 Earphone C35/C35i/S35i/M35
L36254-Z6-C82 Microphone C35/C35i/S35i/M35
L36334-Z97-C112 SIM-Card Holder C35/C35i/S35i/M35i
L36334-Z97-C113 Battery Contact Spring C35/C35i/S35i/M35i
L36334-Z97-C163 SIM-Card Reader with Card Holder
L36453-Z5-C77 Vibra-Alert Unit C35/C35i/S35i/M35
L36851-Z1508-A51 Display module C35/C35i/M35I

Level 2 Part No.

L36880-Q4250-A201 RF Control Board M35i
L36880-Q4250-A211 RF Control Board M35i SIM-Lock 1
L36880-Q4250-A213 RF Control Board M35i SIM-Lock 3

Disassemble the M35

A case opener is needed to disengage the latch of the M35 casing.

PHOTO 2.5 C35/M35i/S35i CASE OPENER

The part number for this mandatory tool is F30032-P46-A1

Refer to ANNEX B of Chapter 3 for Service Equipment List.

STEP 1:

Unlock the battery cover of the battery with the plastic coin that shipped with the M35i phone as
shown in PHOTO 2.6 & PHOTO 2.7

PHOTO 2.6 DISASSEMBLE M35i – STEP 1 PHOTO 2.7 DISASSEMBLE M35i – STEP 1



STEP 2:

Remove the battery cover and the battery as shown in PHOTO 2.8 & PHOTO 2.9 and keep the
Battery Cover, Battery, Battery Sealing, Accessory Connector Cover and External Antenna
Cover for Assembly of M35i .

PHOTO 2.8 DISASSEMBLE M35i – STEP 2 PHOTO 2.9 DISASSEMBLE M35i – STEP 2

STEP 3:

Open the housing with the opening tool and carefully pull the lower housing section off as
illustrated in PHOTO 2.10

PHOTO 2.10 DISASSEMBLE M35i – STEP 3 PHOTO 2.11 DISASSEMBLE M35i – STEP 4

STEP 3:

Use the Case Opener carefully disengaged the catches of the Lower housing and Upper
housing to separate the housing and the Control Board Assembly as in PHOTO 2.11

Disassemble/Assemble of the Lower Housing Assembly

STEP 1:

Open the housing with the opening tool and carefully pull the lower housing section off as
illustrated in PHOTO 2.12

PHOTO 2.12 Lower Housing Assy – STEP 1 PHOTO 2.13 Disassembly Lower Housing – STEP 2

STEP 2:

Remove in sequence by hand the SIM Card Holder, SIM Card Reader, Battery Contact Spring,
and Vibra-Alert Unit as illustrated in PHOTO 2.13

For the assembly of the Lower Housing just reverse the sequence for the disassembly, watch
out for the guide notches.

Disassemble/Assemble the Control Board Assembly

STEP 1:

Open the housing with the opening tool and carefully pull the lower housing section off as
illustrated in PHOTO 2.14

PHOTO 2.14 Control Board Assy – STEP 1

STEP 2:

Unlock the catches of the Display Module from the Control Board and move the display module
to the lower part of the PCB. Lift up carefully the retaining clip of the display connector on the
Control Board as illustrated in PHOTO 2.15

PHOTO 2.15 Disassemble Control Board Assy – STEP 2 PHOTO 2.16 Disassemble Control Board Assy – STEP 3

STEP 3:

Remove the Display Module and the Buzzer Sealing from the Control Board as illustrated in
PHOTO 2.16

For Remove/Install the display module, watch out for the catches on the display module and the
guide hole of the PCB. For the assembly of the Control Board assembly, just reverse the
sequence for the disassembly.

Disassemble/Assemble of the Display Module (For changing of a scratched Display Cover)

STEP 1:

Remove the copper strips that was glued to the back cover of the Display Module with a flat tips
tweezer with care for not to break the copper strips as illustrated in PHOTO 2.17 & PHOTO 2.18

PHOTO 2.17 Disassembly Display Module – STEP 1 PHOTO 2.18 Disassembly Display Module – STEP 1

STEP 2:

Disengaged the catches of the Back Cover and Front Display Cover to separate the housing and
the Control Board Assembly as in PHOTO 2.19 and remove in sequence by hand the Back
Cover, LCD Flexi-PCB and the Display Mask as illustrated in PHOTO 2.20

PHOTO 2.19 Disassembly Display Module – STEP PHOTO 2.20 Disassembly Display Module – STEP 1

For the assembly of the Display just reverse the sequence for the disassembly. (watch out for
the guide notches and blow off the dust on the LCD screen and Display Cover.)

Disassemble/Assemble of the Upper Housing Assembly

STEP 1:

Open the housing with the opening tool and carefully pull the lower housing section off as
illustrated in PHOTO 2.21

PHOTO 2.21 Upper Housing Assy – STEP 1 PHOTO 2.22 Disassemble Upper Housing – STEP 2

STEP 2:

Remove the Keypad, Case Sealing by hand and use a fine point metal tweezers to remove the
microphone as illustrated in PHOTO 2.22

The loudspeaker is glued to the upper housing section by a foam
covered with glue on both sides. When you remove it, the foam
will be damaged. Please use new loudspeaker for assembling
Upper Housing Assembly.

For assembly of a new Upper Housing install a new earphone first, watch out for the orientation.
For install of the other parts just reverse the sequence for the disassembly.

Assemble the M35

STEP 1:

Check that the Lower Housing Assembly, Control Board Assembly and Upper Housing
Assembly are in good order. Check if the Buzzer sealing was installed on the Control Board.

N e w U p p e r a n d L ow e r C a s i n g m u s t b e u s e d . A l l
c o n t a c t p i n s m u s t n o t b e d i r t y , d a m a g e d o r b e n t !

I f a n y p a r t i s n o t O . K p l e a s e r e p l a c e i t w i t h a

n e w p a r t .

PHOTO 2.23 ASSEMBLE M35i – STEP 1 PHOTO 2.24 ASSEMBLE M35i – STEP 2

STEP 2:

Place the Control Board Assembly in the Upper Housing as illustrated in PHOTO 2.24.





STEP 3:

Close the device by putting on the Upper casing section as illustrated in PHOTO 2.25. Hold the
phone and use both hands to close the casing starting from the catches at the top part near the
antenna, watch out for leaving any finger marking on the display screen.

D o n o t p l a c e t h e p h o n e o n t h e

t a b l e t o c l o s e u p t h e h o u s i n g a s

t h e A n t e n n a m a y b e d a m a g e .

A L L C A T C H E S M U S T E N G A G E

C O M P L E T E L Y !

PHOTO 2.25 ASSEMBLE M35i – STEP 3

STEP 4:

Remove old IMEI label from the old housing using a hair-dryer for re-use of the IMEI label or
paste the new IMEI label supplied for control board replacement. Insert the battery and put back
the battery cover. Ready for testing.

PHOTO 2.26 ASSEMBLE M35i – STEP 4 PHOTO 2.27 ASSEMBLE M35i – STEP 4



Mobile Software Programming

Model before X25 and X35, software used for the mobile are similar except for their differences
in the language group. Customer specific values (e.g. ringing tones etc) are seldom, but there
were some, were included in the common mobile software.

X25 and X35 has changed. There is still a common mobile software available which is divided
into language groups. However, this software does not contain the specific settings, such as
ringing tones, greeting text, short dial list etc., required by the operator(s) or service provider(s).
Therefore, it is not uncommon to have some menu item(s) differ in different variants or are not
visible at all. These settings are stored in different memory area of the mobile and will be
activated depending on the customer specific model or variant of the phone by a separate test
step during the production process.

Due to this separation of common mobile software and customer specific initialization, it is
possible to fulfill the demands of the market requiring customization and flexibility.

As a consequence the software programming process in the LSO is divided into two different
steps as followed:

1. Software update to actual version and appropriate language group

2. Programming of CUSTOMER SPECIFIC INITIALIZATION

Mobile Software Updating

The software of the mobile, M35 series, is loaded from a PC directly. Hardware interconnection
between the mobile and the PC is shown in Figure 2.6

FIGURE 2.28 X35 SERIES SOFTWARE PROGRAMMING SETUP

Because of the new type of external connector used in X35 (Lumberg type) an additional
adaptor cable between mobile and boot adaptor is required. Table 2.1 listed all the hardware
requirements

If you use the X35 battery dummy, then make sure that the power supply voltage is correctly
adjusted 4.0V & 3A current rating.

Description Part No.

Adaptor-Cable-Bootadaptor, X25/X35 V30146-A5004-D
Boot Adaptor L24857-F1006-A30
IBM Compatible PC – Pentium -

TABLE 2.1 EQUIPMENT LIST FOR SOFTWARE PROGRAMMING.

SOFTWARE IS A DOS-BASED PROGRAM, IT IS
ADVISABLE TO DO THE SOFTWARE UPGRADE IN DOS
ENVIRONMENT.

Languague Groups

There are over 20 languages for the M35 series in total. These languages are divided into
groups as follows

M35i

Group

Languages

1

English, German, French, Italian, Dutch, Swedish,
Finnish, Norwegian, Danish.

2

English, German, French, Italian, Dutch, Swedish,
Finnish, Norwegian, Danish.

3

English, German, French, Italian, Spanish, Catalan,
Portugese, Dutch.

4

English, German, Hungarian, Polish, Russian,
Bulgrian, Czech, Slovakian.

5

English, French, Italian, Arabic, Greek, Turkish,
Hebrew, Bahasan Malaysia, Bahasan Indonesia.

8

English2, Chinese Simplified, Chinese Traditional.

Note: Tegic- T9 Input method support in for the languages BOLD.

TABLE 2.2 SOFTWARE LANGUAGE GROUPS.

T h i s i n f o r ma t i o n i s s u b j e ct t o c h a n g e !

Contact your Service Manager for the order number of the
right version of mobile software for your market.

The mobile software file is named using this convention:

e.g. M35_0501  Version = 05; Language Group = 1

M35_0508  Version = 05; Language Group = 8.





M35_(Version)(LG).EXE

This executable file needs a definition or init file, named SWUP.INI, to define the message
language preferences and the hardware communication port set up.
The content of this file consists of the following text:

Where x is the number that corresponds to the serial port that is used, either 1, 2 or 3.

Flow chart 2.1 illustrates the software programming process.

FLOWCHART 2.1 SOFTWARE PROGRAMMING. PROCESS

No

Yes

YesNoNo

Yes

YesNoYes

No

Plug in the Boot
Adaptor to the
PC and Mobile

Connect the AC
adaptor to the
Boot Adaptor

Power up Boot
Adaptor &
Check LED

OK
?

Check AC
Adaptor

OK
?

Faulty AC
Adaptor

Faulty Boot
Adaptor

Power up the PC
in DOS
environment

Execute the
“Mobile S/W”

Error
?

Check
H/W setup = S/W
settings.

OK
?

Software
upgrading in
progress

Correct settings.

Error
?

Test Mobile

Take note of
error and repeat
process again

Feedback Error
to ICP CD ASC

END

Language=English
COM=x

Customer Specific Initialization

Refer to the Customization Guide

L S O ha s t o m a k e s u r e th a t a f t e r r e p a i r t h e

c u s t o m e r g e t s th e m o b i l e w i t h c o r r e c t v a r ia nt

s p e c if ic i n i t i a l iz a t i o n .

F o r m o r e i n f o rm a t i o n a b o u t t h e c o n f i g u r a t i o n

t o o l , r e f e r t o S e r v i c e I n f o r m a t i o n d a t e d 3 0

t h

A p r i l 1 9 9 9 , o r c on t a c t y o u r S e r v i c e M a n a ge r .

International Mobile Equipment Identity, IMEI

The mobile equipment is uniquely identified by the International Mobile Equipment Identity, IMEI,
which consists of 15 digits. Type approval granted to a type of mobile is allocated 6 digits. The
final assembly code is used to identify the final assembly plant and is assigned with 2 digits. 6
digits have been allocated for the equipment serial number for manufacturer and the last digit is
spare.

The part number for the M35i is S36880-S4250-Axxx where the last 4 letters specify the housing
and software variant.

M35i series IMEI label is accessible by removing the battery. It is illustrated in Photo 2.18.

PHOTO 2.18 3518i IMEI LABEL

Re-use of IMEI label is possible by using a hair-dryer to remove the IMEI label.

On this IMEI label, Siemens has also includes the date code for production or service, which
conforms to the industrial standard DIN EN 60062. The date code comprises of 2 characters:
first character denotes the Year and the second character denotes the Month. Fr example, the
IMEI above show date code M3.

Year Date Code Month Date Code

1999 L December D

2000 M January 1
2001 N February 2

TABLE 2.3 DIN EN 60062 DATE CODE

¸

Phone Unblocking

When the phone is disable due to wrong entry of PHONECODE, it can be re-activated by
entering the right unblocking code. This unblocking code is derived from the IMEI number of the
mobile.

The unblocked code, also known as Master Phone Code, has to be entered in the following
format:

* # 0 0 0 3 * - - - - - - - - #

The Master Phone Code can be obtained by:

1. Fax to Siemens Hotline in Germany

Siemens AG

ICP CD SH

World Service Center, Bocholt, Germany

[phone]

2. Fax to Siemens Hotline in Singapore

Siemens Advanced Engineering Pte Ltd
ICP CD ASC

Ms Ginny Siew

[phone]

3. Internet Solution

A password protected homepage where LSO can enter IMEI number of a disable phone. The
generated Master Code will then be presented for unblocking purpose. This service is offered to
all LSOs.

PHOTO 2.19 INTERNET PAGE

PHOTO 2.20 INTERNET PAGE: MASTER PHONE CODE

Contact your Service Manager for more information regarding

setting up of the INTERNET SOLUTION & its installation

procedure, ASC/T002/98.



Siemens Service Equipment

U S E R M A N U A L

Introduction

Every LSO repairing Siemens handset must ensure that the quality standards are observed.
Siemens has developed an automatic testing system that will perform all necessary
measurements. This testing system is known as

S i e m e n s M o b i l e S e r v i c e E q u i p m e n t

Using this system vastly simplifies the repair of the phones and will make sure that:

1. All possible faults are detected

2. Set which pass the test will be good enough to return to customer.

Starting from the P35 Series, Siemens will introduce a simpler and faster testing platform for
testing a repaired Siemens mobile phone. The testing platform are either base on R&S CMD
53/55 or CTS55 GSM test set.

There is also test software under development for testing with the Wavetek 4201S and the 4107
GSM test set.

A Level 2.5 service software is also under development for more elaborate testing for the repair
for the P35 series mobile phone.

THE LSO WILL HAVE TO PURCHASE THE SYSTEM, CHOOSING BETWEEN

THE COMPLETE PACKAGE OR SUB-SET OF IT.

A F U LL Y A U TO MA T I C T E S T PR O C E D U R E I S O N LY

P O S S I B L E I F TH E C O M P L E T E S Y S T E M I S

I N S T A L L E D.

Make sure that your CTS firmware is Version 3.01 or higher. For CMD
55 it must be Version 4.03 and higher. Please check with the Service
Info SB_0500 for the CTS/CMD Hardware Options.

Chapter

3





R&S CMD55 Test Station

R&S CTS55 Test Station

Wavetek 4201S Test Station

Other equipment

One Pentium MMX Window 95/98 PC with a serial port to connect to the GSM test set through
the PC serial cable provided for the GSM test set.

One Test SIM card and a fully charged battery for used with the mobile phone model.

Additional RF connector will be needed for setup using Wavetek 4107 test set and Wavetek
Antenna Coupler.

For LSO Test Station setup base on the Wavetek 4107 test set, you need a TNC(male) to
SMA(female) connector. For the Wavetek Antenna Coupler, you need a TNC(female) to
SMA(female) connector. The part number for the connectors will be announced soon.

For Wavetek GSM test set For Wavetek Antenna Coupler

Software Installation

Before executing the test software, it is important to ensure that the software configuration
matches that of the hardware set up. Each GSM Tester will have a specific test software. The

test software are name CMD_GO, CTS_GO and for Wavetek test set, CAT4200 respectively.

First, copy the installation software for the specific GSM tester to a temporary directory on the
harddisk of the Window PC and then Run the Setup from the first sub directory – Disk1 for
CMD_GO test software.

After the installation for the test software, RUN the Test software and check the configuration
setting for the Serial port.

Configuring the test software

For each model of the P35 series mobile phone, Siemens will distribute the testing configuration
file for the specific test station. For testing the phone, just go to the File menu and select Load
Configuration.

Running the test sequence

Make sure that your CTS firmware is Version 3.01 or higher. For

CMD 55 it must be Version 4.03 and higher. Please check with the

Service Info SB_0500 for the CTS/CMD Hardware Options.

Insert a Test SIM card and a fully charged battery into the Siemens mobile phone and place it
onto the phone holder on the Antenna Coupler. Switch the RF switch to INT ANT position and
select the Start button to run the test sequence in the configuration file.

Follow the instruction on the screen and switch on the phone. The mobile phone will start
Network Search and doing Location Update to the GSM test set through the off-air signal from
Antenna Coupler.



Next, the GSM test set will initial a call to the mobile phone through the Antenna Coupler. Press
the Call key when the mobile phone ring, and the GSM test set will start Tx Power
measurements on the GSM and GSM1800 channel specified by the configuration setting.

Next, the GSM test set will end the call to the mobile phone and the screen will prompt for Dialing
from the mobile phone. At this test step, please move the mobile phone to the Antenna Cradle
and switch the RF switch to EXT ANT position. Once the mobile phone log to the GSM test set,
dial 1234 and the Send key.

The GSM test set will make Tx Power measurements, Rx BER measurement, Echo Loop test
on the GSM and GSM1800 channel specified by the configuration setting. There will be 2 Echo
Loop Back test for checking the speech quality – one for GSM and one for GSM1800. Speak
into the mobile phone when prompted and listen the voice after appr. 1 second and check the
speech quality. If not O.K, it may be microphone or the earphone defective.

The last test is Disconnect Call from the mobile phone. Press the End Call key and the test
sequence will end.

A measurement report screen will show up and a hardcopy can be printed if a printer is
connected to the PC. To close the measurement report screen, click the third button from the
left.

Once the mobile phone pass all the test steps, please make a check for all the key and the
display. After this we can confirm on the proper functioning of the mobile phone after repair and
return the phone back to the customer.

ANNEX A

Cable Specifications

1. PC to NGSM(Power Supply)
Depending on the type of serial connector that is used by the PC. The cable layout for both
9pins and 25pin are listed below:

Computer:

Sub-D 25 pins

NGSM:

Sub-D 25 pins

TxD Pin 2 RxD Pin 3
RxD Pin 3 TxD Pin 2
RTS Pin 4 DCD Pin 8
DCD Pin 8 RTS Pin 4
CTS Pin 5 DTR Pin 20

DSR Pin 6 DTR Pin 20
DTR Pin 20 CTS Pin 5
DTR Pin 20 DSR Pin 6

GND Pin 7 GND Pin 7

TABLE A.1 D25 TO D25 CONNECTION

Computer:

Sub-D 9 pins

NGSM:

Sub-D 25 pins

TxD Pin 2 RxD Pin 3

RxD Pin 3 TxD Pin 2

RTS Pin 7 DCD Pin 8

DCD Pin 1 RTS Pin 4

CTS Pin 8 DTR Pin 20

DSR Pin 6 DTR Pin 20

DTR Pin 4 CTS Pin 5

DTR Pin 4 DSR Pin 6

GND Pin 5 GND Pin 7

TABLE A.2 D9 TO D25 CONNECTION

2. PC to CMD 53 or CTS 55

Depending on the type of connector used for the PC serial interface, two different type of
cables can be used:

Computer:

Sub-D 25 pins

CMD / CTS:

Sub-D 9 pins

TxD Pin 2 RxD Pin 2
RxD Pin 3 TxD Pin 3
DSR Pin 6 DTR Pin 4
GND Pin 7 GND Pin 5

DTR Pin 20 DSR Pin 6

CTS Pin 5 RTS Pin 7
RTS Pin 4 CTS Pin 8

TABLE A.3 D25 TO D9 CONNECTION

Computer: CMD / CTS:

Sub-D 9 pins Sub-D 9 pins

RxD Pin 3 TxD Pin 2
TxD Pin 2 RxD Pin 3
DSR Pin 6 DTR Pin 4
GND Pin 5 GND Pin 5
DTR Pin 4 DSR Pin 6
CTS Pin 8 RTS Pin 7
RTS Pin 7 CTS Pin 8

TABLE A.4 D9 TO D9 CONNECTION

3. PC to Adaptor Box

Computer:

Sub-D 9 pins

Adaptorbox:

Sub-D 9 pins

TxD Pin 2 RxD Pin 3
RxD Pin 3 TxD Pin 2
DTR Pin 4 DSR Pin 6
GND Pin 5 GND Pin 5
DSR Pin 6 DTR Pin 4
RTS Pin 7 CTS Pin 8
CTS Pin 8 RTS Pin 7

TABLE A.5 D9 TO D9 CONNECTION

Jumper Settings of NGSM(Power Supply

Internal dip switches of the power supply, NGSM 32/10, must be set correctly to ensure
proper communication between PC and the NGSM. These switches are set up by Siemens
and tested before delivery, hence it is not necessary to change it normally.

These switches are located under the left side of the cover of the NGSM.

Position OFF ON OFF OFF ON OFF OFF ON

Switch No. 1 2 3 4 5 6 7 8

TABLE A.6 SWITCH SETTINGS

Test SIM card Information

For testing purposes, in combination with the Rohde & Schwarz GSM tester, CMD or CTS, it is
mandatory to use the enclosed test SIM card.

If you do not use this test SIM card, you will encounter difficulties in getting correct measurement
for the Bit Error Rate.

When the SIM card simulation is set to ‘1’ in the INI file, then this

test SIM card is not needed at all

There are two different PIN numbers stored in the SIM card. The PINs and

their respective Master-PIN are:

PIN 1 12 34
Master-PIN 1 76 54 32 10

PIN 2 56 78
Master-PIN 2 98 76 54 32

TABLE A.7 D25 TO D25 CONNECTION



ANNEX B

Service Equipment List

All purchases of jigs, tools and test equipment must be order directly from Siemens Germany. Attach the
standard form with your purchase order and send it to ICP CD SL and ICP CD ST.

Pos.

No.

Name Siemens

Partnumber

Order?

(ý =Yes)

Special testequipment for use with CMD 53

1 GSM Tester CMD 53 incl. Options B1, B4, B30 F30032-P1-A1 r
11 RF-Switch F30032-P27-A1 r
12 Powersupply for RF-Switch V24851-Z2607-A1 r
13

RF-cable SMA(m) ↔ FME(f)

F30032-P30-A1 r

14

RF-cable SMA(m) ↔ SMA(m)

F30032-P31-A1 r

15

RF-cable SMA(m) ↔ SMA(f)

F30032-P32-A1 r

Special testequipment for use with CTS 55

10 GSM-Tester CTS 55 incl. Options B1,B7,K6,K9,K18 F30032-P24-A1 r
11 RF-Switch F30032-P27-A1 r
12 Powersupply for RF-Switch V24851-Z2607-A1 r
13

RF-cable SMA(m) ↔ FME(f)

F30032-P30-A1 r

14

RF-cable SMA(m) ↔ SMA(m)

F30032-P31-A1 r

15

RF-cable SMA(m) ↔ SMA(f)

F30032-P32-A1 r

Testequipment for use with CTS 55 or CMD 53

16 Test-SIM-Card (plug-in type) F30032-P2-A1 r
17

RS 232 cable PC ↔ CMD / CTS (9pins.)

F30032-P3-A1 r

21 Printer incl. parallel cable F30032-P7-A1 r
22 Test jig incl. aerial coupler “new” F30032-P8-A1 r
23

Connector N ↔ FME(m)

F30032-P11-A1 r

24 User manual test software CMD / CTS F30032-P13-A1 r
25 Disk with test software CMD / CTS F30032-P19-A1 r

Antenna Cradle C35/S35/M35 L36880-N4001-A110 r

For use with X25/ X35 SW Upgrade Station

26 Boot Adapter incl. AC-Adapter, serial cable & Mobile

connection cable. Need nos 41 for X35.

L24857-F1006-A30 r

43 Adapter-Cable-Bootadapter X25/X35 V30146-A5004-D r

Opening -Tools for use with X25/X35

44 Case opener X25/X35 F30032-P46-A1 r

Battery Analyser

45 CADEX Tester C7000 F30032-P49-A1 r
46 Universal Adapter F30032-P59-A1 r

TABLE B.1 SERVICE EQUIPMENT ORDER FORM

For detail information, contact your Service Manager



Level 2.5 Repair Document

Introduction

The C/M/S35 product family consists of 5 different dualband handsets (GSM-900 and
GSM-1800), which can easily be distinguished from the second block of the part number printed
on the IMEI label. There also exist Asian variants of C/M/S35 named 3508 / 3518 / 3568
respectively. All information below also applies to the Asian variants unless otherwise noted.

Partnumber on IMEI label:

1) C35 / 3508: S30880-S4000-Xxxx

2) C35i / 3508i: S30880-S4050-Xxxx
Same as C35 / 3508 but with additional WAP and fax/data capabilities

3) M35 / 3518: S30880-S4200-Xxxx

4) M35i / 3518i: S30880-S4250-Xxxx
Same as M35 / 3518 but with additional WAP and fax/data capabilities

5) S35i / 3568i: S30880-S4100-Xxxx

This manual is intended to help you carry out repairs on level 2.5, meaning limited component
repairs. Failure highlights are documented and should be repaired in the local workshops.

It must be noted that all repairs have to be carried out in an environment set up according to the
ESD (Electrostatic Discharge Sensitive Devices) regulations defined in international standards.

All repairs have to be carried out in an environment set up

according to ESD regulations defined in international standards.

ESD procedure is available from your Service Manager. Ask for

ASC/T001/98

Fault code listed must be used for LSO reporting purpose.

Fault Description Fault Code Part Number

Chapter

4



If you have any questions regarding the repair procedures or spare parts do not hesitate to
contact our technical support team in Kamp-Lintfort, Germany:

Tel.: [phone]
Fax: [phone]
e-mail: [e-mail]

This manual is intended to help you carry out repair on Level 2.5, i.e. limited component repair.
Failure highlighted in this document should be repaired in the local workshop.

Antenna Connector

Affected Units

Type: C/M/S35

Affected IMEIs / Date Codes: All / All

Affected SW-Versions: All

Fault Code for LSO reporting: 3ANC

Fault Description

Fault Symptoms for customers:

Network Search when using the external antenna (carkit)

No location update possible on external antenna (carkit)

Fault Symptom on GSM-Tester:

Output power problems on the external antenna
No location update possible

Component Information

The Antenna Connector is a mechanical switch operated by the RF plug of a carkit or, for testing
purposes, of an RF clip.
Normally the RF signal goes to and comes from the internal antenna. Whenever an RF plug is
plugged into the antenna connector the connection to the internal antenna is opened and the
connection to the external antenna socket is made. See drawing below.

From
Power
Amplifier/

To / From
Internal
Antenna

Priority:

 ........ Mandatory

 ........ Repair

 ........ Optional

 ........ Not Yet Defined

Repair Documentation

Description of procedure:

D I A G NO S I S

Check the output power of the handset with the LSO testprogram.
Especially watch the external antenna power!

R E P A I R B Y C O M P O N E N T C H AN G E

Use hot air blower to remove defective connector
Avoid excessive heat!
Watch surrounding components!

Resolder new connector afterwards.

R E P A I R B Y S W - B O O T I N G

Not possible!

T E S T

Retest handset after repair as described above.

List of needed material

C O M P O N E N T S

X35 antenna connector

Attention: This is not the same connector as C25/S25 !!!

Part-Number: L36334-Z93-C272

J I G S A N D T O O L S

Hot Air Blower

Soldering Iron

S P E C I A L T O O L S

None

W O R K I N G M A T E R I A L S

Desolder Wick / Braid
Solder

Drawings

Figure 1: X35 Board Antenna Connector Side (Top View)

Ringer

Affected Units

Type: C/M/S35

Affected IMEIs / Date Codes: All / All

Affected SW-Versions: All

Fault Code for LSO reporting: 3RIN

Fault Description

Fault Symptoms for customers:

Problems with the handset ringer. No ringer tone audible.

Fault Symptom on GSM-Tester:

Handset fails ringer test.

Priority:

 ........ Mandatory

 ........ Repair

 ........ Optional

 ........ Not Yet Defined

Repair Documentation

Description of procedure:

D I A G NO S I S

Visually check the ringer. Watch for physical damage or dry joints.

R E P A I R B Y C O M P O N E N T C H AN G E

Resolder dry soldering joints.
If the ringer is physically damaged use hot air blower or wick to remove defective
connector.

Avoid excessive heat!

Watch surrounding components!

Resolder new ringer afterwards.

R E P A I R B Y S W - B O O T I N G

Not possible!

T E S T

Retest handset after repair.

List of needed material

C O M P O N E N T S

Ringer P35:

Part-Number: L36178-Z2-C26

J I G S A N D T O O L S

Hot Air Blower
Soldering Iron

S P E C I A L T O O L S

None

W O R K I N G M A T E R I A L S

Desolder Wick / Braid
Solder
Flux

Drawings

Figure 1: X35 Board Ringer Side

Figure 2: X35 Ringer (B800) Placement (Top View)

Bottom Connector (Lumberg)

Affected Units

Type: C/M/S35

Affected IMEIs / Date Codes: All / All

Affected SW-Versions: All

Fault Code for LSO reporting: 3LUC

Fault Description

Fault Symptoms for customers:

Charging problems.
Problems with external loudspeaker or microphone when
using a car kit.
Problems with accessories connected at the bottom
connector.
Problems with SW booting.

Fault Symptom on GSM-Tester:

This problem cannot be detected with a GSM-Tester.

Priority:

 ........ Mandatory

 ........ Repair

 ........ Optional

 ........ Not Yet Defined

Repair Documentation

Description of procedure:

D I A G NO S I S

Visually check the bottom connector. Watch for dry joints!

R E P A I R B Y C O M P O N E N T C H AN G E

Use hot air blower remove defective bottom connector.
Avoid excessive heat!
Watch surrounding components!

Resolder new bottom connector afterwards.

R E P A I R B Y S W - B O O T I N G

Not possible!

T E S T

Retest handset after repair.

List of needed material:

C O M P O N E N T S

Bottom Connector X35

Part-Number: L36334-Z93-C262

J I G S A N D T O O L S

Hot Air Blower

Soldering Iron

S P E C I A L T O O L S

None

W O R K I N G M A T E R I A L S

Desolder Wick / Braid
Solder

Drawings

Figure 1: X35 Board Bottom Connector Side

Figure 2: X35 Bottom Connector Placement (Top View)

Table 1: X35 Bottom Connector Pin Description

Pin 12

Pin 1

Pin

Name IN/OUT Notes

1 GND

2 SB I/O Charger coding and

charger control.

3 POWER I Charging Current

4 FBatt+ O Power supply for the

accessories.

5 TX O Serial interface

6 RX I Serial interface

7 ZUB_CLK I/O Clock line for

accessory bus
Use as DTC In data
operation

8 ZUB_DATA I/O Data line for

accessory bus.
Use as CTS in data
operation

9 GND_MIC For external

microphone

10 HF_MIC I External microphone

11 AUDO O Trigger for external

loudspeaker

12 GNDA For external

loudspeaker

Display Connector

Affected Units

Type: C/M/S 35

Affected IMEIs / Date Codes: All / All

Affected SW-Versions: All

Fault Code for LSO reporting: 3DIC

Fault Description

Fault Symptoms for customers:

Display problems, like missing lines or columns on the
LCD or display contrast problems.

Fault Symptom on GSM-Tester:

Display test fails.

Priority:

 ........ Mandatory

 ........ Repair

 ........ Optional

 ........ Not Yet Defined

Repair Documentation

Description of procedure:

D I A G NO S I S

Visually check the status of the display connector. Watch for oxidation
and dry solder joints.
Mechanically check the opening / closing mechanism.

R E P A I R B Y C O M P O N E N T C H AN G E

Use hot air to remove defective connector
Avoid excessive heat!
Watch surrounding components!!

Resolder new connector afterwards

R E P A I R B Y S W - B O O T I N G

Not possible!

T E S T

Retest handset after repair.

List of needed material

C O M P O N E N T S D I S PL A Y C O N N E C T O R

Part-Number: L36195-Z26-C629

J I G S A N D T O O L S

Soldering Iron
Hot Air Blower

S P E C I A L T O O L S

None

W O R K I N G M A T E R I A L S

Desolder Wick / Braid
Solder

Drawings

Figure 1: X35 board display connector side

Figure 2: X35 display connector placement (Top View)

Keyboard LEDs

Affected Units

Type: C/M/S 35

Affected IMEIs / Date Codes: All / All

Affected SW-Versions: All

Fault Code for LSO reporting: 3LED

Fault Description

Fault Symptoms for customers:

Keyboard Illumination not working.

Fault Symptom on GSM-Tester:

This fault cannot be detected with a GSM-Tester

Priority:

 ........ Mandatory

 ........ Repair

 ........ Optional

 ........ Not Yet Defined

Repair Documentation

Description of procedure:

D I A G NO S I S

Use the diode test function of a multimeter to check the status of the
diode.
The typical voltage drop on the diode is 1.7V when testing the diode
function with the multimeter.

R E P A I R B Y C O M P O N E N T C H AN G E

Use soldering iron to remove defective diode
Avoid excessive heat!
Watch surrounding components!

Resolder new diode afterwards.

R E P A I R B Y S W - B O O T I N G

Not possible!

T E S T

Retest handset after repair.

List of needed material

C O M P O N E N T S

LED keyboard X35

Part-Number: L36840-L2031-D670

J I G S A N D T O O L S

Hot Air Blower

Soldering Iron

S P E C I A L T O O L S

None

W O R K I N G M A T E R I A L S

Desolder Wick / Braid
Solder

Drawings

Figure 1: X35 board keyboard LED Side

Figure 2: X35 keyboard LED placement and polarity (top view)

Display LEDs

Affected Units

Type: C/M/S 35

Affected IMEIs / Date Codes: All / All

Affected SW-Versions: All

Fault Code for LSO reporting: 3LED

Fault Description

Fault Symptoms for customers:

Display Illumination not working.

Fault Symptom on GSM-Tester:

This fault cannot be detected with a GSM-Tester

Priority:

 ........ Mandatory

 ........ Repair

 ........ Optional

 ........ Not Yet Defined

Repair Documentation

Description of procedure:

D I A G NO S I S

Use the diode test function of a multimeter to check the status of the
diode.
The typical voltage drop on the diode is 1.7V when testing the diode
function with the multimeter.

Attention: There are two different types of display LEDs, one for
C/M35 and one for S35! Also they use different placement location,
see drawings 1 and 3.

R E P A I R B Y C O M P O N E N T C H AN G E

Use soldering iron to remove defective diode
Avoid excessive heat!
Watch surrounding components!

Resolder new diode afterwards.

R E P A I R B Y S W - B O O T I N G

Not possible!

T E S T

Retest handset after repair.

List of needed material

C O M P O N E N T S

Display LED S35

Part-Number: L36840-L2048-D670

Display LED C/M35
Part-Number: L36840-L2047-D670

J I G S A N D T O O L S

Hot Air Blower

Soldering Iron

S P E C I A L T O O L S

None

W O R K I N G M A T E R I A L S

Desolder Wick / Braid
Solder

Drawings

Figure 1: C/M35 board display LED Side

Figure 2: C/M35 board display LED placement and polarity

Figure 3: S35 board display LED side

Figure 4: S35 board display LED placement and polarity

Infrared Diodes

Affected Units

Type: S 35

Affected IMEIs / Date Codes: All / All

Affected SW-Versions: All

Fault Code for LSO reporting: 3INF

Fault Description

Fault Symptoms for customers:

No infrared connection possible.

Fault Symptom on GSM-Tester:

This fault cannot be detected with a GSM-Tester.

Priority:

 ........ Mandatory

 ........ Repair

 ........ Optional

 ........ Not Yet Defined

Repair Documentation

Description of procedure:

D I A G NO S I S

Visually check the status of the IrDa module. Watch for dry solder joints.
Use a reference infrared port (eg. from a notebook) to check the IrDa
function. If the notebook recognizes the S35, the infrared function is ok.

R E P A I R B Y C O M P O N E N T C H AN G E

Use hot air to remove defective infrared module.
Avoid excessive heat!
Watch surrounding components!!

Resolder new module afterwards

R E P A I R B Y S W - B O O T I N G

Not possible!

T E S T

Retest handset after repair.

List of needed material

C O M P O N E N T S I N F R A R ED M O D U L E S 3 5

Part-Number: L36810-U6030-D670

J I G S A N D T O O L S

Soldering Iron
Hot Air Blower

S PE C I A L T O O L S

None

W O R K I N G M A T E R I A L S

Desolder Wick / Braid
Solder

ANNEX C

PC Adaptor Cable & Accessories C35

75

Belt Clip
L36880-N4001-A113

Car Kit Portable Handsfree Set
L36880-N3015-A117

Car Charger Cable 10,8-24V
L36880-N4001-A108

Adapter Cable E-Box-PC
L36880-N3101-A112

Adapter Cable PC-Mobilephone
L36880-N3101-A102

Headset
L36880-N4001-A123

Microphone Accessories Kit
L36158-A98-C6

Car Holder
L36158-A24-C25

Car Kit Portable Handsfree Microphone
L36254-Z6-C75

VDA Adaptercable
L36880-N4001-A121

12 V

Power Plug for C35, M35 , S35

76

Desktop Charger
L36880-N4001-A102

Travel Charger 90-240 V Travel Charger 90-240V
L36880-N4001-A103 L36880-N4001-A104

Eur

UK

Power Plug

L36280-Z4-C325

L36280-Z4-C321

L36280-Z4-C323

L36280-Z4-C324

L36280-Z4-

Car installation kit Ratio unit C35, M35 &
S35

77

Handsfree Microphone
L36880-N4001-A116

Not included in our Standard Dellivry

O

Handset
L36880-N3015-A123

Cradle Comfort
L36158-A37-B1

Connection Box
Ratio

Con. Cable Battery
Comfort
L36146-A2053-D

Phone In Adapter
L36880-N3015-A137

Car installation kit hands free unit C35,
M35, S35

78

Radio Mute black
Battery red
Battery Ground brown
Ignition violet

Handsfree Microphone
L36254-Z6-C76

Connection Box
L36880-S2001-A100

3m

Handset
L36880-N3015-A123

Handsfree Loudspeaker
L36104-F3090-X902

Phone In Adaptor
L36880-N3015-A137

Not included in our Standard Dellivry Program

Fuses 3A

1,8m

Con. Cable Battery Comfort
L36146-A4013-D

OR

Cradle Comfort
L36158-A37-B1

Carkit installation kit hand free unit
Professional C35, M35, S35

79

Handsfree Loudspaker
L36104-F3090-X901

Fuses 3A

1,9m

Handset
L36880-N3015-

3m

Radio Mute black
Lights Dimmer yellow
Automatic Antenna
white
Battery red
Battery ground brown
Ignition violet

Adapter Cable E-Box-PC
L36880-N3101-A112

Con. Cable Battery
L36146-A1030-D

Push to talk
cable

Handfree Microphone
L36254-Z6-C63

Connection Box engl.
L36880-N3101-A110

Cradle Comfort
L36158-A37-B1

Not included in our Standard

Carkit installation Comfort GPS C35, M35,
S35

80

Handsfree
Microphone

Antenna

Crash Sensor
L36880-N4001-A115

Not included in our Standard

Handset
L36880-N3015-

O

Con. Cable Battery
L36146-A2053-D

Connection Pox GPS
L36880-S4001-A4

Car Cradle Telematic
L36158-A37-B6

Con. Pox

Combi Antenna GPS
L36851-Z1901-A46

Handsfree Loudspeaker
L36104-F3090-X902

Phone In Adapter
L36880-N3015-A137

PC Adaptar Cable & Accessory C35,
M35, S35

81

Belt Clip
L36880-N4001-A113

Car Kit Portable Handsfree Set
L36880-N3015-A117

Car Charger cable 10, 8 – 24V
L36880-N4001-A108

Adaptor Cable E-Box -PC
L36880-N3101-A112

Adapter Cable PC-Mobilephone
L36880-N3101-A102

Headset
L36880-N4001-A123

Microphone Accessories Kit
L36158-A98-C6

Car Holder
L36158-A24-C25

Car Kit Portable Handsfree Microphone
L36254-Z6-C75

VDA Adaptercable
L36880-N4001-A121

12 V

References:

1. Mouly M. & Pautet M-B. (1992) The GSM System for Mobile

Communications, A comprehensive overview of the European
Digital Cellular Systems France: Published by authors.

2. Scourias, J Overview of the Global System for Mobile

Communications University of Waterloo: Published by author.

3. - (1998) GSM Introduction Published by Wavetek Wireless

Communication Division.

4. Barnes, N SIM Application Toolkit, Article by author on ETSI

Website.

5. Mehrotra A, (1994), Cellular Radio Analog and Digital System,

Artech House Inc, USA.

6. IrDA(Infrared Data Association), Serial Infrared Physical Layer

Link Specification, Version 1.1, October 15, 1995.

Disclaimer: This content is subjected to change
without notice.

Copyright  2000 Siemens Advanced Engineering Pte Ltd

ICP CD Asia Service Center,
164, Kallang Way, #04-22, Kolam Ayer Industrial Estate, Singapore
349248
Author: Tan Guan San.
Phone [phone] • Fax [phone]
First Print: May, 00
Revised Print:
Date Print: May 26, 2000

The reproduction and transmission of this document to unauthorized
parties is not permitted without written authority. Offender will be liable
for damages.

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