Leds In Fault State; Power Led Off Or Flashing Green; Table 3-3. Led In Fault State - ADTRAN Total Access 374 Installation And Maintenance Manual

Total Access 374 4-POTS, 4-GigE MDU ONT Installation and Maintenance Guide

LEDs in Fault State

Descriptions of each LED are listed in
Label
PWR
BATTERY
Fail
NET
MGT

Power LED off or Flashing Green

If the PWR LED is off or flashing Green, this may indicate the unit is on battery reserve
(flashing) or (if off) has no power. A bad LED is also possible. This can be caused by one of the
following conditions:
■ Loss of commercial power
■ Malfunctioning or disconnected UPS
■ Malfunction of LED at ONT
■ Defective LPS wiring
3-4

Table 3-3. LED in Fault State

Color Cadence Description
Off Solid No power
Green Flashing On Battery Reserve
Off Solid No Battery or
Defective Battery
Green Flashing Low or defective battery
Red Flashing Ranging
Red Solid Unit not Ranged
Off Solid No signal from OLT 1490
nm
Off Solid Admin link to OLT not
active
Table 3-3 with possible causes for fault LED conditions.
Possible Causes
■ UPS disconnected or
■ PWR LED bad
■ Defective LPS wiring
Loss of commercial power
■ Battery disconnected or missing
■ Defective battery
■ BAT LED defective
■ Defective LPS wiring
■ Battery not charging through
■ Defective battery
During installation and sometimes
after fiber is connected, this LED
will flash. If flash continues, more
than a few minutes, this OLT must
be checked to verify:
■ ONT is provisioned
■ Serial number matches
■ ONT not provisioned at the OLT
■ Marginal optical signal level or
■ Malfunction of LED at ONT
■ Open fiber (no signal)
■ Failure at OLT
■ Failure at ONT
■ Failure at OLT
■ Failure at ONT
malfunctioning
UPS
no signal
61287703G1-5B