Introduction
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ADTS 405 R/F Mk2 Instruction Manual-English | 57
6. Testing and Fault Finding
6.1 Introduction
The ADTS 405 Mk2 contains a built-in, self-test and diagnostic system. The system
continuously monitors the performance of the unit and at power-up carries out a self-test.
Warning and error messages are displayed during normal operation if out of range values are
entered or if faults occur.
This section details the standard serviceability test and the error messages and codes that
can be displayed. A fault diagnosis flow chart and table provide the probable cause and
procedures to rectify specific symptoms.
6.2 Error Messages
At power-up, the ADTS 405 Mk2 indicates if there is a fault by displaying an error code, for
example:
• 701:HHHH PS SELF-TEST ERROR
The HHHH is a hexadecimal code containing additional information record the whole error
code check that the error code is complete and listed in the table before returning the unit to
the repair depot. In the event of a fault, the built-in, self-test and diagnostic system displays
an error message and error code. A unit displaying an error should be returned to the repair
depot.
See Appendix B.1, “Error Messages,” on page 117 for a list of error messages.
Note:
(1) If the display shows “ERROR 703 START UP Ps SELF TEST TIME ERROR”, check
that the expansion port dongle (item 8, Table 2-2) is correctly connected in the expansion
port on the rear panel (Figure 2-6).
Note:
(2) Some errors display extra information using a four digit hexadecimal code.
This should always be recorded with the error number to provide information for the
repair depot.
6.3 Warning Messages
During operation, the ADTS 405 Mk2 indicates a warning by displaying a warning code, for
example:
• 2:INVALID USER INPUT
See Appendix B.2, “Warning Messages,” on page 118 for a list of warning messages, their
probable cause, and required action.
