Nokia NPD-4 Series Troubleshooting - Gps page 9

CCS Technical Documentation
GPS_CLK
(16.368MHz) OK?
(J010)
Yes
GPS Self Test OK?
(use GPS Quick Test
function in Phoenix)
Yes
CE sending code
download signals?
Yes
SPI interface active?
Yes
RF data and clock?
Yes
Debug RF front end
Issue 1 02/2003
No
No
No
No
No
Nokia Corporation
Troubleshooting — GPS
Replace TCXO or
GPS RF ASIC
Replace GPS BB
ASIC
Determine why CE not
sending download
signals
Replace GPS BB
ASIC
Replace GPS RF
ASIC
Confidential
NPD-4
Page 9