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5. In the Test Mode field, ensure that BB/Hdw is selected.
6. Click Execute.
Self Test Failure
If the test fails, repeat steps 1—6. If the test fails again, continue with the following self-
test failure troubleshooting:
1. Verify the DC voltages at VRF_GPS and VIO_GPS.
Points" on page
2. Inspect all GPS circuit elements around the GPS BB chip (N6200).
3. If the elements pass a visual inspection, replace the N6200.
Oscillator Failure
1. Inspect all GPS circuit elements around the GPS RF chip (N6250).
2. If the elements pass a visual inspection, replace the GPS TCXO (B6250).
CW Test Failure
1. Check that the signal generator is on and sourcing a signal to the GPS RF input
port (X6250).
2. Inspect all GPS RF circuit elements.
3. Probe the GPS RF test points on page 64.
4. If the elements pass a visual inspection and the RF is good, replace the GPS RF IC
(N6250).
GPS RF Troubleshooting
Use the following steps to trouble shoot the GPS receiver.
1. On the GPS Control dialog box, select On.
ISSUE 1 07/2005
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for test point locations and values.)
©2005 Nokia Corporation
3155/3155i (RM-41), 3152 (RM-61)
RF Description and Troubleshooting
("GPS DC Test
Company Confidential
Page 61