Rf Connector Failure - Nokia 1265 Description And Troubleshooting

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RF Connector Failure

The RF connector fails when it does not properly connect the RF input terminal to
the RF output terminal during the SMT. If this happens, the antenna gain degrades
by 25 dB. Check this by testing the resistance value between the RF input and RF
output of the RF connector and see if the value is close to zero. If the RF input is
not connected properly to the RF output, replace the RF connector.
Note: Perform the resistance value test without a RF cable attached to the RF
connector. Because the RF connector is also a switch, the RF output is
disconnected from the RF input when a RF cable is inserted into the RF connector.
RF input terminal – connect to duplexer.
RF output terminal – connect to the antenna pad through antenna match
circuit.
RF connector terminal – connect to a RF coaxial cable.
RF output terminal
RF input terminal
Note:
• QSC6010 is underfilled and cannot be replaced.
• Memory IC is underfilled and cannot be replaced.
• The Shielding Cover cannot be reused after removal.
• After using the heatgun, the domesheet is recommended to be replaced.
Issue 04/2007 © 2007 Nokia Corporation
Antenna Description and Troubleshooting
Figure 6: RF input / output terminal
Company Confidential
1265 (RH-103)
Page 7