Siemens S25 Service Manual page 7

The ringer (1120) of the phone is mechanically fixed on the RF/Control board by a special
clip (1190) and electrically connected to the board by means of a cable and a plug. In the
same way the vibra alert unit (1160) is connected, so both components can be exchanged
without doing soldering work. In S25 the vibra alert unit is not a part of the battery but of the
phone itself.
Dust protection frame (1200), cover for IR-interface (1280) and loudspeaker (1140) including
spacer (1250) are mounted to th upper housing (1060). The lower housing (1070) carries
antenna (1150), battery contacts (1170), microphone (1130), vibra alert unit (1160) and the
buttons for voice memo (1350) and side keys (1340).
The antenna (1150) is of a plug-in type, as it is used in Siemens mobiles since C10/C11.
Attention:
The antenna of C10, C11, C25 and S25 are of different types. Be carefull not to mix them up.
S25 carries the same type of external connector as it was introduced with C25. This new
„Lumberg"-connector does not feature connecting an external antenna, and therefore there is a
separate connector for external antenna located at the back side of the upper end of the
mobile, close to the internal antenna (1150). This connector contains the mechanical antenna
switch inside. The switch is operated by inserting the appropriate plug e.g. of a car kit
comfort.
To perform measurements on the S25 and for software updates the same adapter cable
between bootadapter and mobile can be used as it was for C25. For further information on the
testequipment please refer to the appropriate documentation or contact the technical support
department.
Service Manual S25 / S2588
Sm_S25_lvl2_v11.doc
Information and Communication Products
V 1.0
Page 7 of 35
Mobile Phones
ICP CD ST
R. Fleuren
06/99