User Guide

6235/6235i/6236i (RM-60)
RF Description and Troubleshooting
Page 46 ©2005 Nokia Corporation Company Confidential Issue 1 04/2005
Synthesizer Troubleshooting Setup
Use the following steps to troubleshoot the synthesizer using Phoenix:
1. On the Phone Control dialog box, click the LOCAL button in the Phone State
area to put the mobile terminal into Local Mode.
Figure 44: Phone Control dialog box
2. Select the following values on the RF Main Mode dialog box:.
Top Level Troubleshooting
Check for the folowing problems during your initial troubleshooting:
• Faulty synthesizers can cause both RX and TX failures during tuning, in addition
to the VCTCXO tuning.
• With AMS phones, it is recommended first to check for the presence of various
LO’s signals and their proper levels.
• The reference clock, 19.2MHz, is needed for the phone to power up. Therefore, if
everything fails, perhaps it may be necessary to check the presence of 19.2MHz.
Table 7: RF Main Mode Dialog Box Settings
Synthesizer Band Mode Channel
UHF Cell Rx/Tx 384
PCS Rx/Tx 600
Rx VHF (one band is enough) Rx
Tx VHF Cell Rx/Tx 384
PCS Rx/Tx 600