Nokia 3390, 3390b, 3395 服务手册
NPB-1NB
Troubleshooting
PAMS Technical Documentation
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Baseband Troubleshooting ................................................................................5
Baseband Testpoints ...................................................................................................... 5
Power Schematic - Plots ..............................................................................................8CPU Schematic - Plots .................................................................................................9
Fault Finding Charts..................................................................................................... 10
1. Phone is Dead ........................................................................................................102. Flash Programming Does Not Work ....................................................................103. Phone Stays On or is Jammed ..............................................................................134. Display Information : “Contact Service” ...............................................................145. No Network Found, No Call Established ..............................................................166. Phone Not Registering to a Network ....................................................................177. Sim Related Errors ................................................................................................188. Audio Faults ...........................................................................................................209. Charging Error .......................................................................................................22
Baseband Plots ............................................................................................................. 23
Plot1: RFC in Normal Operation ..............................................................................23Plot 2: Power Up with ACP-7U .................................................................................24Plot 3: Power up with ACP-8U .................................................................................25Plot 5: Power up with a power variable power supply ..............................................27Plot 6: Power up with Power switch (PWRONx) ......................................................28Plots 7,8,9,10: PCM Clock Tests ...............................................................................29
RF Troubleshooting...........................................................................................32
Introduction .................................................................................................................. 32Basic Controls with Wintesla....................................................................................... 32
Selecting the Phone and the Operating Band ............................................................32 RF Controls ...............................................................................................................33
Tuning the Phone ......................................................................................................... 34
RX Tuning .................................................................................................................34TX Tuning .................................................................................................................40
Receiver Fault Finding................................................................................................. 44
General .......................................................................................................................44Hagar ..........................................................................................................................44LNA ...........................................................................................................................44RX-filters ...................................................................................................................44Antenna Switch ..........................................................................................................45
Transmitter Fault Finding ............................................................................................ 45
General .......................................................................................................................45Antenna Switch ..........................................................................................................45PA-Module, Directional Coupler and Power Detector ..............................................45 HAGAR ....................................................................................................................46
Synthesizer Fault Finding ............................................................................................ 46
General .......................................................................................................................46VCTCXO ...................................................................................................................46VCO ...........................................................................................................................46
RF Testpoints ............................................................................................................... 47