Siemens C35 series Service Manual

V1.0

Local Service Organization Service Manual

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Table of Content

CHAPTER 1
Cellu la r C ommunication
Coverage Conce pt 1
GSM Network Arc h itecture 2
Subscriber Identity Module 3
SIM Application Toolkit 4
Extended GSM 900 - EGSM 5
Built-in Modem 5
Data A p p lic a tio n 6

CHAPTER 2
Level 2 Se r v ice Guide
Introduction 7
C35 Series Technical Information 8
Accessories 10
General Information 11
C35 Series Exploded Diagram 13
Mechanical Concept 14
Hardware Concept – Block diagram 15
Hardware Description 16
Power Supply Concept 18
Over voltage Condition 18
Battery 19
Short Circuit Protection 19
Charging 19
Deep Discharge Battery 20
C35 Spare Parts Level 2 21
Disassemble the C35 22
Disassemble/Assemble Lower Housing 24
Disassemble/Assemble Control Board Assy 25
Disassemble/Assemble Upper Housing 27
Assemble the C35 28
Mobile Software Programming 30

Language Groups 32
Custo me r Specific In itialization 34
International Mobile Equipment Identity 34
Phone Unblocking 35

CHAPTER 3
Siemens Service Equipment
Introduction 37
Other equipment 39
Softwa re Installatio n 40
Configuring the test software 41
Running the test sequence 42
ANNEX A 46
ANNEX B 49

CHAPTER 4
Level 2.5 Repair Document
Introduction 50
Antenna Connector 51
Ringer 55
Bottom Connector (Lumberg) 58
Display Connector 62
Keyboard LED 66
Display LED 69
Infrared Diodes 73

ANNEX C
PC Adapter Cable & Accessories C35 76
Power Plug for C35 77
Car installation Ratio Unit, C35 78
Car Installation kit Handfree kit 79
Car Installation kit Handfree Pro. 80
Car Insta lla tio n Comfort GPS, C35 81
Reference s 83

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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, sam e frequency i s us ed by sever al 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, wit h each c over i ng a fair ly sm al l geogr aphi cal zone c al l ed cel l . C ell s are
often represented by hexagons (s ee figure 1.1.) .

FIGURE 1.1

CELLULAR COVERAGE R EPRESEN T ATI ON .

C

hapter

T

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GSM Network Architecture.

GSM network can be br oadl y di v ided i nto thr ee br oad par ts, nam el y:

1. Mobile Stati on( MS) carried by the subsc r i ber,

2. Base Station Sub-system(BSS) whi ch contr ols the r adio l ink w it h the mobi l e station.

3. Mobile Switching Center(MSC) which performs the switching of calls between the mobile
users, and between mobi l e and fixed networ k user s .

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 Locati on Regi s ter , 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 i s i nter r ogated about the pr esent addr es s of the VLR.

Home Location Regi st er, H LR

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
immediatel y to the c all ed par ty.

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Authentication Center, AU C

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, whi ch pr otec ts the us er i nform ation agai ns t unwanted di sc l osur e.

Equipment Identity R egis ter , EIR

An option the network operator can use to enforce security. With this feature the network can
identify defective or stolen m obi le that m ay not be used i n the netw ork .

Subscriber Identi ty 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 INS ERT SIM CA RD

Figure 1.3 illustrates the steps for inserting the SIM card into the C35 series.

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To protect the SIM card from impr oper use, a s ecur i ty 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 r equi r ed for additi onal funtions avai l able w i th a s peci al SIM card ( Cons ul t the operator for
more information about the PI N .

A code (PUK) is pr ovi ded for unl ock ing the SIM card if the SI M card is blocked

Change PIN Procedures.

CHART 1.1 PIN CONTROL

SIM Applic ation Toolkit

SIM Applications Toolkit (S AT) allows the fle xibility to update the SIM, to change the services
and download new serv ic es ov er the air . In the SAT specification, the short message servi ce is a

Β

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.

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key mechanism for personalizing the SIM in each user’s GSM phone. It is designed as a client­server appli cati on. C 35 ser i es s upports SAT Cl ass 3 spec ific ation.

When active, the name of the service may appear in the menu, and there will be sub-menu if
more than one applicati on i s ac tiv e. Fi gur e 1.6 i s the SAT ic on.

FIGURE 1.4 SAT ICON

Extended GSM 900, E-GS M

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 T r ansm i t: 880 – 915 MHz

• Mobile R ecei ve: 925 – 960 MHz

C35 series i s a GSM Phase 2 / Phase 2+ Dualband E-GSM / GSM 1800 mobil e phone.

Built-i n Modem.

C35i has an integrated modem for direct data communication using the data cable as shown in
Figure 1.5. C35 do not have the bui lt - in s oft modem for D ata Ser vi ce of GSM netw or k.

FIGURE 1.5 DATA CABL E.

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Data Applicati on Support

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

Facsimil e c onforms to Ser vi ce C l ass 1, group 3 and oper ate at 2400, 4800, 7200 and 9600 bi t/s.
Data services vi a GSM network up to 9600 bps, and remote control using cellular AT commands

for C35i only.
Internet access vi a the C 35i i s poss ibl e w it h the inc lus i on of Wireless Applic ation Protocol (WAP)

browser 1.1 .

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Level 2 Serv ice Guide

Introduction

The chapter is intended to help you carry out repair up to Level 2 on the C35 series mobile
phone.

The repair for international version and Asian variants are identical unless otherwise noted,
therefore the descripti on herei n i s c onfined to C35 onl y.

All repairs have to be carr ied out in an envir onm ent set up

according to ESD r egulations defined in inter national standards.

ESD procedu re is available from your Se rv ice M a nager . Ask for

ASC/T001/98

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hapter

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C35 & C35i Techni cal Information

System GSM Phase 2/Phase2+, D ual Band

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

Operating Voltage 3.6V

Size(LxWxH) 118 x 46 x 21 mm(w i thout antenna)
Volume 88c m

3

including battery (appr ox )
Weight 116g including battery (approx)
Battery(Standard) NiM H , 500m AH( Standar d)

Li-Ion, 600m AH( Opti onal )

Standby time

1

50 to 180 hours (standard batter y )

Talk time

1

90 to 300 minutes (standar d batter y)
Charging Ti m e Up to 1.5 hours wit h Rapi d C har ger
SIM s uppor t Plug in card 1.8 V or 3V
Antenna Non - retr actabl e, λ/2, heli cal fixed.
Speech codec Triple rate

Enhance Full Rate
Full Rate
Half Rate

Display 101 x 54 pixel graphical displ ay w i th up to 5 l ines

12 x 12 font size for Chinese
Keypad 12 numeric key s( 10 num er ic , #, *)

4 function keys(Send, End-ON /OFF , Menu, Phonebook)

2 multifunctional softkeys
Key Sound Click/DTMF/None
Key Lock Activation and Deacti v ation by #- key or

Automatic.

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Actual time depende nt on the ne twork.

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Dialing 10 redial number s ,

Last 10 incoming w ith date/ti m e st amp

Last 10 outgoing calls

Last 10 missed cal l s w it h date/tim e s tam p

Ringer On/Beep/Off

Up to 22 melodies and 5 r i nging v olum e s ettings

(Mel ody C om poser , C r es cendo R i nging)
Volume Adjustable in 4 levels during call via softkey
Silent Alert Built-in vi br ator
Phone Book Storage depends on the SIM card capacity

Storage of up to 100 list in the phone (VI P)
SMS Support MT, M O, C B

Predictive T ext Input, Tegic T9.
Supplementary Call Forw ar ding, C al l Hol d, C all Wait,

Services Multiparty Conferenc e, CLIP, CLIR, AoCC

AoCI, FDN , LND U SSD 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 netw or k s elec ti on
Chipset Siemens E – GOLD
WAP Browser

1

Version 1.1
Other Features Clock / Alar m

Alarm List

2

Built-in m odem

3

Calculator

4

Currency C onv er ter

4 Games

7 User Profiles

1

Only for Mo d el C35i.

2

Not available in C35 International version.

3

Not available in C35 International version.

4

Not available in C35 International version.

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Accessories:

1. Standard Battery L36880-N4001-A100

2. Optional Battery L36880-N4001-A101

3. Standard Charger L36280-Z4-CXXX ( C ountr y Var i ant)

4. Travel Char ger L36880-N4001-A103 (EU ) / A104 ( UK)

Similar to standar d c harger w i th an uni ver sal i nput vol tage from 90 ~ 240V

4. Desk Top Char ger L36880-N4001-A102

5. Belt Clip L36880-N4001-A113

6. Headset L36880-N4001-A123

7. Antenna Cradle L36880-N4001-A110

8. Car Charger C abl e 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 3508i)

14. Data Cable

3

L36880-N3101-A102

15. Car Kit Professional Voic e 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)

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General Information

Due to different requirements of the markets, the C35 series has different variants, which
broadly classified under International version and Asian version. Marketing name for
international ver si on i s C 35 or C 35i, w her eas As i an ver si on i s nam ed 3508 or 3508i .

The 3508 series is equipped with a graphic display which enable the telephone to display
CHINESE c har acter s, ei ther i n Tr adi ti onal font or Si m pli fied font, beside the standar d Engl i sh.

Difference between C35(08) and C35(08)i

C35(08)i mobile software has WAP Browser 1.1 incorporated thus enabling user to surf the
Internet and it have bui l t- i n soft modem for GSM Data Service.

The differences between the C35 and C35i are the hardware and software. The memory size of
C35 is 16M B and that of C35I is 32MB.

There are also two variants for 3508, one without the WAP browser is 3508 and that with WAP
browser ver si on 1.1 i s 3508i . T he different for ASIAN ver si on i s onl y mobi l e softwar e.

Wireless Applic ation 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 (W ML), 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 W AP client (mobile) using the available and most appropriate mobile network
bearer serv ic es.

Wireless Protocol Stack.

Wireless Application Envi r onm ent (WAE)
Wireless Session Protocol ( WSP)
Wireless Transaction Pr otocol ( WTP)
Wireless Transport Layer Sec uri ty ( WTLS)
Wireless Datagram Protoc ol ( WDP)
Bearers e.g. Data, SM S, U SSD

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 appl ic ation ( WTA).

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2. Wirelss Session Protocol

Link the WAE to two session services – one connection oriented operating above the WTP
and a connectionless s er vi c e oper ating abov e WDP.

3. Wireless Transaction Pr otocol

Runs on top of the datagram service and part of the standard suite of TCP/IP protocols, to
provide a sim pli fied pr otocol sui tabl e for low bandw idth m obi l e stati on.

4. Wireless Transport Layer Sec uri ty

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 authenti c ation.

5. Wireless Datagram Protoc ol

Allows WAP to be bearer independent by adapting the transport layer of the under-laying
bearer. WDP presents a consistent data form at to the hi gher l ay er on the WAP stack.

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C35 Series Mechani cal Diagram

FIGURE 2.1 C35 ME CHANICAL 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.

Always refer to the SERVICE PART PRICE LIST

for your spare part order.

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Mechanical Concept

Note: All numbers refer to mechanical drawi ng in Figure 2.1.

The mechanical c oncept of the C35 di ffers in var i ous poi nts from the one of the other Siem ens
mobile telephones.

The first thing you will experience is how the housing is locked. In C35 no sc r ews ar e used to
keep the housing closed. Al so i nsi de the tel ephone no sc rew s ar e used anym or e. T o open the
housing, which is kept c l osed by c atches onl y, a s peci al openi ng tool has been defined.

For

details on disass em bly tool pl eas e refer to Photo 2.3 i n thi s c hapter

.

Inside, the C35 cons i sts of just one boar d ( 1010) w hi ch c ar ri es dis play m odule( 1170) , c ontr ol
part and RF secti on of the mobil e.

The display modul e ( 1170) i s c onnected to the boar d by a flexi bl e cabl e w hic h is i nser ted i nto a
plug. In case the dis play i s defectiv e elec tr ic all y or mec hani cal ly i t can be ex changed v ery easi l y.

C35 does have an external c onnector of a new type. Si nce S6 a s o cal l ed “ Molex”-connector
was used, which also offered the possibility to connect an external antenna to it. The new
“Lumberg”- c onnector w hic h is used i n C 35 does not feature suc h a connec tion, bec ause the
connector for external antenna i s l oc ated at the back s i de of the upper end of the mobil e, cl ose
to the internal antenna (1130) . As a c onsequenc e of this ther e is no need anym or e for a RF
cable mounted to the board nor for a RF plug on i t to c onnect thi s c able. T hi s i m pr oves RF ­properties of the mobil e and low er s pr oduc tion c ost s.

To be able to do measurem ents on and softwar e update of the telephone, an adapter cabl e
between Molex and Lum ber g connec tor will be available.

See photos in Additional T ools of

Chapter 3

.

C35 series antenna i s of a snap-i n type w hi ch i nser ted i nto the l ower c ase shel l ( 1030) . The
antenna can only be changed by opening up the C 35 phone.

The C35 is a dual-band mobile operating on GSM900 and

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

The keypad (1150), the m i cr ophone ( 1110) and the louds peaker ( 1120) ar e m ounted into the
upper case shell ( 1020) . Make sure that the micr ophone and the ear phone contac t spr i ngs ar e
not dirty or dam aged dur i ng r epair pr oc ess .

The dust protection frame and the di s play w indow ar e i ncl uded i n the dis pl ay m odul e( 1170) .

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Hardware Concept – Block Di agram

FIGURE 2.2 C 35 BLOCK DIAGRAM.

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Hardware Description

The handset consists of the followi ng m ajor i ntegr ated ci r cui ts:

1)

E-GOLD – PM B 2851E

This IC is a com bi nation of mi cr opr oc ess or, s i gnal pr oc ess or and r eal - ti m e cl ock .
The micropr oc ess or par t of this c om ponent is r espons ibl e for contr olli ng the key board, SIM-

Card, Flash and R AM. Furthermor e it c ontr ols the pow er s avi ng, pow er up/power dow n of the
RF module and sets the am pl i ficati on of the PA.

The signal proc essor par t of PM B 2851E i s r es ponsi ble for pr oces si ng the R x I/Q signals
(filtering, equali z ing, s peech and c hannel dec odi ng).
Furthermor e i t does the s peech and c hannel enc oding and the GSMK modulation of the Tx
I/Q signals . The Voi ce C OD EC par t is used to r eal i ze adv anced features r egar di ng codi ng of
the speech signal. Thes e ar e:

• Halfrate-Encoding

• Halfrate-Decoding

• Enhanced Fullrate Enc odi ng

• Enhanced Fullrate D ec oding

• Voice Activity Detection

• Comfort Noise

2)

GAI M – PMB2906

The GAIM (G AI M = GSM Analog Interfacing Module) provides the i nterface between the
analogue and its digital r epr esentati on si gnal s ( Bas e-band I/Q, Voice-band, PA-contr ol,
Voltage & Temperatur e Measurement - Char gi ng contr ol ) .

3)

13Mhz Ref Oscillator Circuit -

This circ ui t pr ovi des the follow i ng m ain functions :

• Generate 13Mhz c loc k s ignal for Logi c C ir c uit s – SIN13M.

• Generate 13Mhz r eference s ignal for the PLL ci r cui ts for the Tx & R x of GSM R F si gnal .

• Received the frequency steer i ng contr ol AF C_PN M from the HiGOLD I C for fine tuning

of the Tx & Rx frequency.

• Temperature dependent r esi st or s i ted near the 13MHz oscillator measure the
environment tem peratur e.

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4)

Power Supply A SIC – D0767BA

This circ ui t pr ovi des the follow i ng m ain functions :

• Control of switch on of the M obi l e phone by ON /OFF button, Ex t Power ( C har ger) or r eal
time clock.

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

• Voltage supply to the logic c i r cui ts – 2.90V, 2.65V & 1.92V, Si m c ar d & real ti m e cl oc k i n
HiGOLD IC.

• Switch on the linear r egul ator to suppl y the 2.8V for the13Mhz Oscillator circuit.

• RESET signal for the logic ci r cui t.

• Charge control si gnal for sw i tchi ng the c har ge FET .

• Low battery detector.

• Over voltage protec tion.

5)

Receiver Circuit – Br i g h t I I HD155124F

This circ ui t pr ovi des the follow i ng m ain functions :

• Low Noise Ampl i fier ( LNA ) w i th a fixed am pl ificati on of +20dB to ampl i fy the input RF
signal.

• Mixer to m ix dow n the RF si gnal to the I nter m edi ate Fr equenc y ( I F )

• Programmabl e I F am pl ifier wi th a dy nam ic r ange of 60dB ( -10dB ~ +50dB i n steps of

2dB).

• Mixer to m ix dow n the I F si gnal to the baseband, gener ati ng and inphas e ( I ) and a
quadrature (Q) s i gnal and feed the GAI M IC base-band si gnal , RX I/Q for the decoding
of the digital signal for the Hi GOLD IC.

6)

Transmi t t er Circuit – B ri g h t I I HD155124F

The GAIM I C gener ate the MOD I/Q base-band s i gnal under the c ontr ol of the Hi GOLD IC
and feed the IQ modulator of the Bright II IC. The Br i ght I I IC provi des the IF synthesizer,
the I/Q modulator , pr esc aler to r egul ate the dual - band TX- VC O and feed the modul ated GSM
signal to the PA.

The telephone support only 1.8V and 3V S I M car d

For user with 5V S IM card, he need to upgrade the SI M car d

through his service provider /networ k oper ator

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Power Supply Concept

The C35 has two mai n power i nputs :

1. Battery voltage(3.6V) c onnected at the batter y contac t

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 c an caus e m al function of the C35 phone.

The Logic module us es 1.92V, 2.65V & 2.9V gener ated by v olt age r egulator s ins ide the ASIC.
Furthermore, the ASIC generates the supply voltage for the SIM card and the RESET signal for

the logic devic es.
The ASIC also checks the presence of the watchdog signal from the microprocessor and

provides the swi tc hing on functional i ty (O N_OF F button or Ignition signal).

Wrong polarity or batter y voltage setting that exceed the + 6.5V

could damage the phone.

Over-voltage Conditi on

• 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 low er than 6.2V.
If the supply volt age ri s es abov e 7V, the phone can be dam aged

• 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.

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Be careful with NON-original S I E MEN S accessor ies or char ger s. Make sure that

the charging current is limited to value below 1A.

Battery

C35 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 ti me.

PHOTO 2.32 C35 SERIES INSERTING BATTERY.

For C35, BATT+ has a voltage level from +3.0V to 5.5V, and a BATT_TEMP contact is used for
detecting abnormal i ncr eas e in tem per atur e 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 pr ocess

again, battery and phone needs to cools down or w ar m up. Ba ttery

replacement is not requir ed.

Avoid shorting the battery terminals.

Short Circui t Protection

For the Nickel Metal Hydride battery, a polyswitch in the battery pack protecting the battery from
short circui t and i t shoul d r eset by i tsel f after some tim e rem ovi ng the s hort c ir c uit.

For the Lith ium Ion battery, it is short-circuit protec ted by an ele ctronics 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 batter y fuse can be done wi th ei ther of the following pr oc edur es:

1. Insert the battery into the C35 and then connect the rapid charger to the phone. Wait for
approximately 10 sec ond, then the m obil e can be tur ned on agai n.

2. Plug the battery separatel y i nto the desk top c harger . T he fuse is r es et im m edi ately .

3. Insert the battery into the C35 and put the phone into the desktop charger. Wait for
approximately 10 sec ond, then the m obil e can be s w itc hed on.

Charging

The battery can be charged when it is inserted into the phone. The charging process is
completely contr ol led by the m obi le. C har ging c an be done w it h any of the following ac ces sor y :

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1. Rapid charger

2. Travel charger

3. Car charger

4. Desktop charger

PHOTO 2.33 INSERT CHARGER

Photo 2.33 shows the corr ect w ay of inser ti ng and r em ovi ng the char ger pl ug.

Deep Discharge Battery

In case of a deeply disc har ged battery , the vol tage of the battery i s too low to oper ate the
charging cir cui t and the di spl ay c ontr oll er , the phone can not be tur ned on and the nor m al
charging proces s c an not be star ted. N o char gi ng sy m bol i s v i si bl e in the di spl ay.

In this case, c hargi ng the batter y is div i ded into tw o di fferent steps, whi ch hav e to be r un
subsequently:

a)

Trickle charge for C35 Phone

Trickl e char ge m ode is autom ati cal ly st arted i f the battery v olt age is bel ow 3.0V w hen the
charger is c onnected to the m obi le. T he char gi ng cur r ent i n Tr i ck l e mode i s appr . 10mA.

Trickl e char ge m ode has to l ast mi ni m um until the batter y v olt age has ex ceeded 3.2V,
then the phone will switch on and the charging icon appear. During tr i ck le c har ge the
charging symbol will not be visible and the telephone can not be turned on. This is
because the battery voltage i s too low to oper ate the tel ephone.

Action:

Insert battery i nto handset and c onnect tr av el c har ger to the telephone. If within 4 hours
the battery voltage is high enough agai n, the c hargi ng s ym bol will come up.

If the battery is dis char ged v ery deepl y, the s ym bol m ay not c ome up and the tr i ck l e
charge time poss ibl y has to be extended up to 24 hour s .

b)

Norm al charge

When the battery voltage is above the a.m. value ( e.g. by tr ic kl e char ge) the m obi le will
start the normal char gi ng m ode and show a char gi ng sy m bol i n the di spl ay. * Alw ay s
normal charge a new batter y or a deep di s char ged batter y for m or e then 12 hour s before
first use.

Action:

Connect charger to the tel ephone (

see section on Char gi ng

).

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21

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

Mobile Phone C35 S pare Parts Level 2

SIM Card Reader
with

Card Holder
L36334-Z97-C 111

SIM C ard Holder
L36334-Z97-C 112

Display module
L36851-Z1508-A51

Keypad
L36158-A33-B75

Microphone
L36254-Z6-C 82

Upper Case Shell

L36158-A33-B....

Antenna
L36158-A33-B161

Vibra-Alert Unit
L36453-Z5-C 77

Battery Contact Spring
L36334-Z97-C 113

RF Control Board
L36880-Q4050-B201

Buzzer Sealing
L36158-A33-C260

Display Cover
L36851-A33-C101

Display Sealing
L36158-A33-C103

Earphone
L36212-Z3-C34

Battery Cover

L36158-A33-B....

Battery NI-MH
L36145-K1310-X125

Lower Cas e Shell

L36880-A33-B....

L36158-A33-B....see Spare Par t

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Disassemble the C35

A case opener is needed to dis engage the latc h of the C35 casi ng.

PHOTO 2.3 C35 CASE OPENER

The part number for this mandatory tool i s F30032-P46-A 1

Refer to ANNEX B of Chapter 3 for S ervi ce E q uipment List.

STEP 1:
Remove the battery cover then the batter y as show n in PH OTO 2.4

PHOTO 2.4 DISASSEMBLE C35 – STEP 1

1

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23

STEP 2:
Open the housing with the openi ng tool and c ar efully pul l the l ow er housi ng s ecti on off as

illustrated in PHOTO 2.5

PHOTO 2.5 DISASSEMBLE C35 – STEP 4

STEP 3:
Use the Case Opener car efully dis engaged the catc hes of the Lower housi ng and U pper

housing to separate the housing and the C ontr ol Boar d Assem bl y as i n PHOT O 2.6

PHOTO 2.6 DISASSEMBLE C35 – STEP 3

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24

Disassemble/Assemble of the Lower H ousing Assembly

STEP 1:
Open the housing with the openi ng tool and c ar efully pul l the l ow er housi ng s ecti on off as

illustrated in PHOTO 2.7

PHOTO 2.7 Lower Housing Assy – STEP 1

STEP 2:
Remove in sequence by hand the SI M Card Holder, SIM Card Reader , Batter y Contac t Spr ing,

Vibra-Aler t Uni t and the Antenna as illustrated in PHOTO 2.8

PHOTO 2.8 Disassembly Lower Housing – STEP 2

For Remove/Install the Antenna, watch out for the two catches on the Lower Housing. For install
of the other parts, watch out for the guide notches. For the assembly of the Lower Housing just
reverse the sequenc e for the dis ass em bl y.