User`s guide

AutoTune™ for VX-P820/P920 Rev. C
14
6. Basic Troubleshooting
6.1. Firmware
The radio firmware must be version 1.29 or later to be tested or aligned by the
AutoTune software.
Symptom Possible Cause Solution
AutoTune software fails to put
radio into test mode.
Incompatible radio
firmware.
Before beginning a test or alignment,
the radio under test must be placed
into test mode. Successful entry into
test mode can be observed on LCD-
equipped models when “AUTO TEST”
is displayed on the radio’s LCD
screen. If repeated unsuccessful
attempts have been made to place
the radio into test mode using the
AutoTune software, please verify that
the radio’s firmware meets the above
requirement. See section 3.1
Firmware for more information.
Table 6-1. Firmware.
6.2. Power-Up Error Codes
When powered on, the radio performs some initial self test routines to ensure firmware
and hardware integrity. If a problem is detected during these routines, an error message
below may be displayed to the radio’s LCD screen.
Message Description Corrective Action
ERROR 1 EEPROM Checksum Non-Fatal Error Use AutoTune™ or CE 76 to
realign/retest the radio. This action
calculates and programs the EEPROM
checksum.
ERROR 2 EEPROM Checksum Fatal Error Send radio to depot
ERROR 3 FLASH ROM Checksum Fatal Error Send radio to depot
Table 6-2. Power-Up Error Codes.
6.3. Alignment and Test Troubleshooting
Symptom Possible Cause Solution
RX Tune Low, High Old
results are slightly different
than the New results from
previous alignment.
None. This seeming error is caused by storing
calculated floating-point values as
integers in the radio’s FLASH ROM.
Since some loss of precision will occur,
the calculated previous RX Tune Low,
High Old values may vary slightly from