5310原理图，有需要的朋友可以下来参考下。

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Service Schematics Introduction Important This document is intended for use by authorized service centers only RM303 RM304 Service Schematics was created with focus on customer care The purpose of this document is to provide further technical repair information for NOKIA mobile phones on Level 34 service activities It contains additional information such as eg Component finder Frequency band table or Antenna switch table The Signal overview page gives a good and fast overview about the most imp......