Motorola i860, Руководство по обслуживанию на месте, Страница: 84 / 106

FIELD LEVEL TEST MODES AND PROCEDURES: SQE Test
68P80400P73- A
8-5
8.5 SQE Test
Use this test on a unit having any of the following symptoms: No service failures or poor SQE/
RSSI (poor performance in known good coverage area).
Place unit
in debug mode (see
Entering Debug Mode ). Press
Trace to monitor the SQE & TX level.
Press RF in the R-2660 and arrow down to Gen: .
Verify that it is set to -70dBm .
Verify that the SQE is
greater than
26 .
Verify that
the unit can complete an
interconnect call. Press End/Home
until the unit displays Ready . Press Intercon-
nect (3:1 or 6:1) and Start on the R-2660. Wait for the
green LED to light. Press Send on the unit.
Note: Leave call connected for
the next test.
Fail
Power
up the unit. Enter
Initial Registration mode (see
Operating the R-2660 .) Press Start .
The Call SEQ : 1 thru 6 lights up
when unit has
registered.
Replace the
Main board.
Notes:
1. Watch unit for resetting during this procedure.
2. Master reset can be completed on the unit by pressing Menu,
Settings, Security .
3. Registration and calls might take over 1 minute to complete.
4. See the Strong Signal Environment section in Chapter 7.
Pass
Pass
Change
Gen: to -80 dBm, and
check the SQE Reference chart to
verify the unit’s SQE per Gen:
output using the
chart.
Pass
Unit passed test. Look for
system, coverage, accessory, or
software problems.
Pass
Fail
SQE Reference Chart
Note: Gen levels in the SQE
chart include RF Adapter
losses.
Gen SQE Level
-70 dBm >26
-80 dBm >25
-90 dBm >23
-100 dBm >20
Fail
Perform the
Registration/Call test.
Perform the
Registration/Call
test.
Replace the
Main board.
Connect the regulated battery
eliminator to the unit to be
tested. Remove the antenna
from the unit. Set the power
supply 4.0 Vdc.
Fail
Set up the R-2660 for
i
DEN
Mobile operation, and connect the
unit to the RF IN/OUT
connector. See Figure 7-1 on page
7-3.