Service Manuals, User Guides, Schematic Diagrams or docs for : NOKIA Mobile Phone Nokia_3210 NSE8-024

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NSE8-024


>> Download NSE8-024 documenatation <<

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                                                    CONFIDENTIAL                   1 (1)




Nokia Mobile Phones                                 Service Bulletin No. SB-024/24.11.99
Technical Support, Europe & Africa

                                                    NSE-8


NOT CHARGING

               The plastic C-cover of the phone is equipped with a "time dial" which
               indicates manufacturing month of the C-cover, see picture below. During
               manufacturing month 5 and 6 (May and June) the arrow in the time dial have
               the possibility to hit the varistor R103, and therefore the varistor R103 may
               break off or crack due the pressure from the arrow.




               When testing above cases, please note:

               -     If the phone is charged using ACP-7 charger, phone's display shows
                     "Charging" (Phone battery is NOT charged)
               -     If the phone is charged using ACP-8 or ACP-9, phone's display shows
                     "Not charging" (Recommended chargers used to test above cases)

               R103 is protecting the PSCC N101 (Charging control) circuit against voltage
               spikes from the AC supply network entering the phone via the charger.

               When R103 is defective and the phone suffers from the 'Not charging'
               symptom N101 is probably also defective.

               Procedure:

               1. Replace C-cover or cut away the arrow in the time dial e.g. using a
                  scalpel
               2. Replace R103
               3. Replace N101

                   CODE       ITEM   DESCRIPTION
                   1825005    R103   CHIP VARISTOR VWM14V VC30V 0805
                   4370581    N101   PSCC U463V1136T LFBGA36
                   9451461           C-COVER DMD04144 NSE-8




NSE-8 SB-024



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