Service Manuals, User Guides, Schematic Diagrams or docs for : NOKIA Mobile Phone Nokia_7110 NSE5-012

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                                                    CONFIDENTIAL                     1 (3)




Nokia Mobile Phones                                 Service Bulletin No. SB-012/18.02.00
Technical Support, Europe & Africa

                                                    NSE-5


ROLLER KEY

               In some cases the Roller Key on NSE-5 has not worked. This can be caused
               by the following:

               1. Guide pin on B-cover is too long

               The right holder of the RTC-battery (see picture below), which is a
               component of the B-cover, pushes against R411 on the PCB. Due to these
               forces the solder breaks (in addition to this it is possible that R411 could
               break itself) and then the connection is open. Due to this the roller key does
               not work.




NSE-5 SB-012
                                                   CONFIDENTIAL                    2 (3)




               Procedure how to fix the malfunction

               The right guide pin must be cut manually with a tool as indicated on picture
               below. (A similar tool can also be used.) The nominal height of the guide pin
               after cutting must be 1.4mm.




               Please remember to cut only the right guide pin (see picture below)!!




NSE-5 SB-012
                                                   CONFIDENTIAL                    3 (3)




               2. The ESD & Connector Spring

               The lower limit for the ESD spring is 1.5mm and the upper limit is 1.8mm. If
               the spring is outside this specification, (i.e. the spring does not have the
               proper contact to the PCB) the Roller Key will not function.




               Procedure how to fix the above

               Change the A-cover




NSE-5 SB-012

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