Nokia Customer Care
6b - RF Troubleshooting
Company Confidential
RH-29
Issue 1 05/2004
Copyright
©
2004 Nokia Corporation
Page 13
Company Confidential
Phoenix Tuning
Connect the phone to a PC running the Phoenix Service Software.
Start Phoenix Service Software and open FBUS connection
Select
File
Scan Product
Wait until phone information is shown in the lower right corner of the screen.
RF tuning after repairs
Different repairs require different tuning. In general it is necessary to determine in which
section the repair was done to select which tunings to perform. To determine if RF tuning
is necessary after repair it is important that the functionality of the repaired circuit is
understood well. It is recommended to perform complete RF tuning if RF is repaired.
•
In general repairs in the TX part will require "TX Power Level Tuning"
and "TX IQ Tuning".
•
In general repairs in the RX part or PLL part always require "RX Calibra-
tion", “Rx Band Filter Response Calibration”.
•
If Mjoelner is changed all calibrations have to be done.
Other parts interfacing to TX, RX or PLL might require tuning, but common sense should
be used, e.g. if a component that has no influence on RF performance has been changed,
e.g. the microphone, on/off key, mechanical parts or similar, there is no need to do any RF
tuning.
RX channel select filter calibration
This calibration is calibrating the Base band filter inside Mjoelner. It is done by internally
measuring a prototype filter, for this reason the calibration is done once, not separately
in 2 bands.
Set operating mode to local mode
Select
Tuning
Alt-U
RX Channel Select filter Calibration
F
