Faults Indicated With Leds; Leds In Normal State; Leds In Fault State; Sbu Ont Trouble Isolation - ADTRAN Total Access 372E Installation And Maintenance Manual

Total Access 372 Active Ethernet Small Business Unit ONT Installation and Maintenance Guide

Faults Indicated with LEDs

Begin troubleshooting at the ONT by checking to see if all LEDs are in their normal state,
shown in
on the SBU circuit board. If the LEDs are in their normal state, refer to
on page 34. If the LEDs are in a fault state, refer to

LEDs in Normal State

If the LEDs are in the normal state but you are still having problems, perform the following
troubleshooting steps:
1. If the trouble is of a random or intermittent nature, check for loose or broken connections
2. If the trouble is solid, remove the Customer Provided Equipment (CPE) wiring and

LEDs in Fault State

Descriptions of each LED are listed in
conditions. A flow chart for troubleshooting the problem for each fault condition is provided
in Figure 16

SBU ONT Trouble Isolation

This section describes how to isolate problems based on faults reported through LEDs:
•
•
•

UPS Power LEDs

An UPS POWER LED that is off indicates there is no power. Refer to
problem exists.
Label
AC
Output
Battery
34
Table 9 on page 32. There are separate LEDs for each Ethernet RJ-45 jack that appear
at the common mounting platform.
perform the following tests:
• POTS tests described in
• Ethernet tests described in
the OLT can run and pass the loop-back tests for the Ethernet port.
If the above tests are successful, the indication of the trouble is directed back toward the
CPE wiring/equipment.
on page 35.
"UPS Power LEDs" on page 34
"NET Status LED Off" on page 35
"POTS Troubleshooting"
LED Status
Green

Yellow

Off

Green

Off

Red

"LEDs in Fault State"
"Test for POTS Line Faults"
"Provision Ethernet Interface at OLT"
Table 9 on page 32 with possible causes for fault LED
on page 35

Table 10. Power LEDs

Description
UPS is on AC
UPS is on Battery
No power
UPS is providing DC to ONT
Battery is OK
Battery is not connected or is bad
"LEDs in Normal State"
on page 34.
on page 32.
on page 33. Verify
Table 10 to determine if a
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