OPERATION
AVTMTTR100-ENG Rev 6 Nov 2015
71
Error Messages
All TTR100 error messages are divided by 4 categories: self-test error
messages, test error messages, test result 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 6-1 below shows the messages.
Table 6-1. Self-test Error Messages
Error Message Description of error and action required
CHECKING PLD:BAD CPLD chip is not working properly. Contact the factory for
repair.
CHECKING
DISPLAY:BAD
LCD display is not working properly. Contact the factory for
repair.
CHECKING RAM:BAD Microprocessor RAM is not working. Contact the factory for
repair.
REPAIR REQUIRED!
CONTACT FACTORY
There was a self-test error. Contact the factory for repair.
UNIT INOPERATIVE One of the input voltages is too low, or A/D converter is not
working for the reference oscillator. Contact the factory for
repair.
CHARGE BATTERY! The battery voltage is less than 3.3 volts. Charge the
battery.
LOW BATTERY The battery voltage is between 3.3 volts and 3.42 volts.
Charge the battery.
BAD TEMP SENSOR Temperature sensor is not working. Contact the factory for
repair.
BAD REALTIME CLOCK Can’t read the real time clock. Contact the factory for repair.
BAD SERIAL EEPROM Serial EEPROM can’t be written to or read from. Contact the
factory for repair.
ONEWIRE FAILED There was an error trying to connect to both the temperature
sensor and the real time clock. Contact the factory for repair.
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