General Instructions For Tx Troubleshooting - Nokia rx-34 Service Manual

General instructions for TX troubleshooting

Context
To start TX troubleshooting
Steps
1. Connect the module jig MJ-103 to a computer with a DAU-9S cable or to an FPS-8 flash prommer with an
XCS-4 modular cable and USB cable. Make sure that you have a PKD-1 dongle connected to the computer's
parallel port.
2. Connect a DC power supply to the module test jig with an FLC-2 cable.
Note: When repairing or tuning the transmitter use external DC supply with at least 3A current
capability. Set the DC supply voltage to 12V and set the jumper connector on test jig to "bypass"
position.
3. Connect an RF cable to the RF connector of the PWB board and measurement equipment; or at least a
10dB attenuator, otherwise the PA may be damaged. Use a spectrum analyzer as measurement
equipment.
Note: The maximum input power of a spectrum analyzer is +30dBm. It is recommended to use 10dB
attenuator on the spectrum analyzer input to prevent any damage.
4. Set the phone module to test jig and start Phoenix service software.
5. Initialize connection to the phone. (Use FBUS driver when using DAU-9S.
6. To choose a product in Phoenix: From the File menu, choose "Choose Product" and select RX-34 from the
list or from the File menu, choose "Scan Product".
7. From the toolbar, set operating mode to "Local".
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Figure 49 RF key component placement
Figure 50 WLAN RF measurement points
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RX-34
RF Troubleshooting
Issue 2