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Steps
1. Place the PWB in the module jig
2. Run the Phoenix auto tuning.
If "fail„, replace PWB.
If "pass„, continue to the next step.
3. Use a test SIM card and set the module to normal mode
4. Check basic RF parameters (TX power, phase error, modulation spectrum and switching spectrum) in call
mode (all bands) and make a BER measurement.
If "fail„, replace PWB.
If "pass„, continue to the next step.
5. Place the PWB in the phone again and reassemble the phone
6. Use a test SIM card, set to normal mode and use a GSM tester with antenna or RF coupler. Measure basic
RF parameters (see step 4) in call mode. Make sure the signal path loss is calibrated.
If "fail„, replace antenna assy.
If "pass„, there is no RF failure.
Auto tuning
Context
This phone can be tuned automatically. Autotune is designed to align the phone's RF part easier and faster.
It performs calibrations, tunings and measurements of RX and TX. The results are displayed and logged in a
result file, if initiated.
Hardware requirements for auto tuning:
• PC (Windows 2000/NT) with GPIB card
• Power supply
• Product specific module jig
• Cables: 3 (alt.1) RF cable, 1 GPIB cable and DAU-9S
• Signal analyser (TX), signal generator (RX) and RF-splitter
Page 6 –12
Figure 86 Auto tuning concept with CMU200
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Troubleshooting for Repair service
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