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CONFIDENTIAL 1 (4)
Nokia Mobile Phones Service Bulletin No. SB-053/11.09.01
Technical Support, Europe & Africa
NSM-3
LAYOUT DIAGRAM FOR HW VERSION 1905, NEW HW VERSION 1910
Layout diagram for HW version 1905 (ref SB-050) can be found in Appendix I.
New HW version 1910 has been taken in use.
Changes made from version 1905 to version 1910:
- One capasitor (C789) has been assembled to TXVGSM line (please see
diagrams in Appendix II) to decrease:
- TX loop back to Hagar
- phase error
Note 1: No changes are needed for phones coming to the service.
Note 2: Only MCU SW version 5.27 or newer can be used with these 1905
and 1910 HW versions
ITEM CODE DESCRIPTION
Add C789 2320518 CHIPCAP NPO 1P8 C 50V 0402
NSM-3 SB-053
CONFIDENTIAL 2 (4)
APPENDIX I
Layout diagram for HW 1905
NSM-3 SB-053
CONFIDENTIAL 3 (4)
APPENDIX II
For HW 1910 same layout diagram as for 1905 can be used. Only difference is
assembled C789.
C789 added
NSM-3 SB-053
CONFIDENTIAL 4 (4)
Changes in circuit diagram (C789 added)
C789 assembled
NSM-3 SB-053