Mechanical Concept - Siemens S35i Service Manual

Mechanical Concept

Note: All numbers refer to mechanical drawing in Figure 2.1.
The mechanical concept of the S35i 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 S35i 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 2.3 in this chapter.
Inside, the S35i 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.
S35i 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 S35i 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 (1130). 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.
S35i antenna (1130) is a integral part of the lower case shell (1030). The antenna can only be
changed by open up the S35i phone and replace the housing.
The S35i is a dual-band mobile operating on GSM900 and GSM1800,
the antenna is an integral part of the lower housing.
The keypad (1150), the microphone (1110) and the loudspeaker (1120) 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.
8
V1.0