ADTRAN 1200410L2, User Manual

Page: 27 / 80

Chapter 2. Installation
61200410L2-1A ESU LT User Manual 27
Table 2-1. Self-Test Results
Test Results
Self-Test
(power-up or
commanded) The LCD displays
ADTRAN ESU LT INITIALIZING
, and the
LEDs illuminate sequentially.
If the self-test is completed with no detected failures, the
LCD momentarily displays
ALL TESTS PASSED
.
If a failure is detected during the self-test process,
the failure is displayed in the LCD window.
The automatic self-test consists of the following tests:
• Board-level tests
• Random access memory (RAM) tests; erasable pro-
grammable read-only memory (EPROM) checksum
• On-board data path (sending a known test pattern
through an on-board loop)
• Unit-level tests
• Front panel LED verification
• Phase lock loop verify