BASIC LEVEL CHECKS AND SELF TESTS: Mechanical and Electrical Checks
7.Press RFRSH. The unit will respond with “Scanning for Satellites” or “Satellite Data Is Outdated, Continue?” depending upon whether the GPS Almanac is
8.If the unit responds with “Satellite Data is Outdated, Continue?” press YES, otherwise, no action is required. The unit is searching for satellites. Once it has obtained a position fix, the unit will display the “Position” information sheet again. This could take as long as 10 minutes.
FCAUTION: The unit must be held in a fixed position during the time that it is searching for satellites.
9.Scroll down until the position coordinates are displayed. Compare these position coordinates to a known good i860 unit or a commercial GPS receiver. If a commercial GPS receiver is used, the coordinates must be displayed according to the WGS84 standard
5.5.6Voltage Recognition Test
Use this test to check the
Compare the readings on the unit under test with the readings on a reference unit.
The voltage recognition test time is approximately 4 minutes:
1.Perform the Battery Connections test.
2.Power up the unit with a fully charged battery that is known to be in good working order. Three voltage bars (4 Vdc) should appear on the Battery Strength icon.
Note that:
0 bars ≅
1 bar ≅
2 bars ≅
3 bars ≅
3.Complete a Direct Call and monitor the Battery Strength icon while the Push-
4.Power down the unit.
If this test is successful, place the unit’s battery in the reference unit and
5.5.7Camera Test
1.Enter the MA (Model Assembly) Mode. Press and hold three number keys simultaneously with the Power key, such as
2.Scroll the display to Camera View Finder. Ensure that the camera lens is clean and not damaged.
3.Verify that the viewfinder shows the captured image correctly. Check for noise, poor color, synchronization error.