Gps Rf Quick Fault-Finding Chart - Nokia RH-3 Series Troubleshooting - Gps

CCS Technical Documentation

GPS RF Quick Fault-finding Chart

Apply 1575.520152 MHz @ -110 dBm
CW signal to external GPS RF
connector/switch and run
Troubleshooting/GPS Testing/GPS
Quick Test/Galvanic
Not OK
Apply 1575.520152 MHz @ -100 dBm
CW signal to external GPS RF
connector/switch and run
Troubleshooting/GPS Testing/GPS
Receiver Control (AMS)/Receiver ON
Not OK
Check 19.2 MHz
GPS_RFCLK signal J009
OK
Check 16.368 MHz
GPS_CLK signal J008
OK
Check the 196.416 MHz LO/8
at J005
OK
Check signal level Z003
output (L005)
OK
Check signal level at V001
output (C010)
OK
Check signal level at N054
input (C069)
Figure 9: GPS RF Fault-finding chart (Quick Reference)
Issue 1 06/2003
Start CDMA troubleshooting,
Not OK
VCTCXO, etc.
Not OK Measure VRF_GPS at C017
Replace TCXO B001
Not OK Measure VIO at C067
Replace GPS RF ASIC N054
Not OK Replace filter Z003
Not OK Replace transistor V001
Not OK Replace filter Z004
Nokia Corporation
Troubleshooting — GPS
Not OK
OK
Not OK
OK
Confidential
RH-3
Replace regulator N051
Start CDMA BB
troubleshooting, UEM, etc.
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