Maintenance and Troubleshooting
AVTMTTR25 Rev C April 2008
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Error Messages
All TTR25 error messages are divided by 3 categories: self-test error messages,
test error messages, and miscellaneous error messages.
The self-test error messages may appear on the opening screen during power-up
self-test procedure. The Table 5-2 below shows the messages.
Table 5-2 Self-test Error Messages
Error Message
Description of error and action required
UNIT INOPERATIVE
One of the power supply voltages is too low,
or A/D converter is not working for the
reference oscillator. Contact the factory for
repair.
REPLACE BATTERY!
UNIT WILL TURN OFF
The remaining battery capacity is less than 5
%. Unit will turn off in 10 sec. Replace all six
batteries. After the batteries are replaced,
continue testing.
The test error messages may appear on the screens during testing of
transformer. The Table 5-3 below shows the messages.
Table 5-3 Test Error Messages
Error Message
Description of error and action required
REPLACE BATTERY!
UNIT WILL TURN OFF
The remaining battery capacity is less than 5 %.
Unit will turn off in 10 sec. Replace all six
batteries. After the batteries are replaced,
continue testing.
EXC.CURRENT TOO
HIGH
Excitation current is higher than 100 mA. Check
for any wrong test cable connections or
transformer winding shorts.
CHECK CONNECTIONS
The test leads are not properly connected to
transformer. Connect the leads properly.
Test lead(s) is open. Contact the factory for
repair.
Transformer winding(s) is open. Fix the problem
before continuing the test.
