Nokia RM-333 Service Manual page 167

RM-333; RM-334; RM-335
FMTx 2.1 Troubleshooting
FMTx 2.1 schematic ................................................................................................................................................7-5
FMTx 2.1 component layout ..................................................................................................................................7-5
FMTx 2.1 PWB traces ..............................................................................................................................................7-6
Specific digital and power supply test points .....................................................................................................7-6
FMTx2.1 specific RF test points .............................................................................................................................7-7
Specific clock test points........................................................................................................................................7-7
General visual inspection guidelines....................................................................................................................7-7
FMTx2.1 troubleshooting.......................................................................................................................................7-8
FMTx2.1 antenna visual inspection troubleshooting .........................................................................................7-9
FMTx2.1 audio path visual inspection troubleshooting
FMTx2.1 Si4713 visual inspection troubleshooting
Checking validity of signals
FMTx2.1 troubleshooting faults
Phoenix PC tool....................................................................................................................................................
List of Tables
Table 6 Bus mode selection truth table ...............................................................................................................7-6
Table 7 I2C 7-bit bus address selection summary...............................................................................................7-7
Table 8 Left and right audio self test truth
List of Figures
Figure 53 FMTx 2.1 schematic ...............................................................................................................................7-5
Figure 54 FMTx 2.1 Component References and Location..................................................................................7-5
Figure 55 FMTx 2.1 layout......................................................................................................................................7-6
Figure 56 FMTx panel before connection to the
Figure 57 FMTx panel after connection to the
Figure 58 FMTx panel in action
Issue 2
Table of Contents
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COMPANY CONFIDENTIAL
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