Specifications

ASMi-31 Ver. 3.0 Detecting Errors 5-1
Chapter 5
Troubleshooting and
Diagnostics
This chapter describes the ASMi-31 diagnostic functions, which include:
• Power-up self-test, status indications, burst messages, alarms
• Diagnostic tests (loopbacks and LEDs test)
• Troubleshooting instructions.
5.1 Detecting Errors
Power-Up Self-Test
ASMi-31 performs a hardware self-test upon turn-on. The self-test sequence
checks the critical circuit functions of the modem.
Front Panel LEDs
The status of ASMi-31 is indicated by the TST and SYNC LED indicators located on
the front panel. For the description of LEDs and their functions, refer to
Chapter 3 .
Burst Messages
ASMi-31 responds, in real time, to changes in system status, as dictated by the
user. The following messages will override the current menu display and appear
for a period of about 2 seconds on the ASMi-31 front panel LCD (or on the PCU
LCD).
• WAIT – The system is updating the database at this time and no other actions
can be taken.
• U R BEING CONFIG – Parameters are being configured by the party at the
other side of the line (the remote modem).
• LOC CONFIG ONLY – The parameter is modified on the local modem only,
since the management channel is not available.
• TEST ALREADY ON – Activation of test is not valid because another test is
performed (by local or remote modem).
• NO AUTHORIZATION – This message will appear if the user tries to change
parameters from the standalone or ASMi-31/R modem while it is controlled
via ASMi-31C or ASMi-31CQ installed in LRS-24 modem rack.