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

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)
Issue 1 06/2003
Start CDMA troubleshooting,
Not OK
Not OK Measure VRF_GPS at C017
Replace TCXO B001
Not OK
Replace GPS RF ASIC N054
Not OK
Not OK Replace transistor V001
Not OK
Figure 2: GPS RF Fault-finding chart (Quick reference)
Nokia Corporation
VCTCXO, etc.
Not OK
OK
Measure VIO at C067 Not OK
OK
Replace filter Z003
Replace filter Z004
Confidential
RH-3
Troubleshooting - RF
Replace regulator N051
Start CDMA BB
troubleshooting, UEM, etc.
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