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Appendix C | ( SRS |
SELF TEST (TONE)
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LCD Test
When you press the 2 on the DTMF keypad, the LCD displays a pattern of dark characters. Missing dots, if any, will be evident.
When you press the 3 on the DTMF keypad, the LCD displays the first set of display characters supported by the set. Press 3 again to display the rest of the supported display characters.
To exit from either test, press any multifunction key, softkey, or DTMF key.
Memory Tests
Pressing 4 on the numeric keypad starts an automatic sequence of tests, performing memory and line tests in order.
The first of these tests writes to and reads from all RAM locations. If any error is detected, the test sequence stops at that point and reports by displaying an error code on the display; for example,
SELF TEST (MEMORY/LINE TEST) ERROR CODE (06)
(06)is only one example. Other codes may appear in its place if different errors are discovered.
Any error code display reflects an error condition to be handled by your System Administrator.
No other test requests are allowed during this test. If any error is detected, the test sequence stops at that point and reports by displaying an error code.
When the RAM test terminates successfully, the Digital Set goes immediately to the ROM access test. Upon detection of an error, the sequence stops and an error code is displayed.
When the ROM access test terminates successfully, the DTE interface circuit test starts automatically on sets that have the optional data terminal adapter. An error in this test is reported by an error code in the LCD display.
When the DTE test terminates successfully, the NT line test starts automatically. An error in this test is reported by an error code in the LCD display.
If all tests terminate successfully, the following display shows on the LCD:
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