Motorola i760, Field Service Manual

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BASIC LEVEL CHECKS AND SELF TESTS: Mechanical and Electrical Checks
5-6
68P80400P94-O
7. Press RFRSH. The unit will respond with “Scanning for Satellites” or “Satellite Data Is
Outdated, Continue?” depending upon whether the GPS Almanac is up-to-date or not.
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 If the unit responds with “Satellite Data is Outdated, Continue?”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.
9. Scroll down until the position coordinates are displayed. Compare these position coordinates to
a known good i850/i760 unit or a commercial GPS receiver. If a commercial GPS receiver is
used, the coordinates must be displayed according to the WGS84 standard
5.5.6 Voltage Recognition Test
Use this test to check the voltage-recognition circuit in the unit. To accomplish this test, the unit
must first be registered on an iDEN system.
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
≅
0–10% of full charge
1 bar
≅
11-34% of full charge
2 bars
≅
35-64% of full charge
3 bars
≅
65-100% of full charge
3. Complete a Direct Call and monitor the Battery Strength icon while the
Push- to-Talk (PTT)
button is pressed.
4. Power down the unit.
If this test is successful, place the unit’s battery in the reference unit and re-run the test.
5.5.7 Camera Test
1. Enter the MA (Model Assembly) Mode. Press and hold three number keys simultaneously with
the Power key, such as 1-2-3, 4-5-6, 7-8-9.
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.
F
CAUTION: The unit must be held in a fixed position during the time that it is
searching for satellites.