Avaya MCC1 Maintenance Procedures page 166

Troubleshooting
LA85 port tester
Table 57: Port fault isolation using the LA85 port tester
To begin the
isolation
procedure
at the...
Wall field in
equipment
room
Station
(terminating
end)
Station
wall jack
Intermediate
closet wall
field
The port tester is equipped to check 110-type wall field hardware with the three 1-pair patch cords that
are color-coded blue (1), orange (2), or green (3).
NOTE:
If the wall field has 66-type blocks, a 66-type block adapter (Comcode 405546474) is
needed.
!
DANGER:
The port tester should not be plugged into an active circuit for an extended period of
time. Resistors in the tester can burn out.
LED indications for the various port types are listed in
tester, on page 167. Abbreviations are as follows:
• R = Red
• G = Green
166
You might need this
preliminary information
or equipment...
Use display errors command
1 Wrong or incorrect
reading from the
terminal end of the
station cord
2 D8W line cord
(Comcode
103786761) used at
station wall jack
And if... Then...
Off-board Verify wiring from switch to
errors indicated equipment room wall field.
1 Unplug station cord
from terminal and plug
it into the "BRI" or
"Other" jack on the
tester, as applicable.
2 If the readings are OK,
the terminal, handset, or
handset cord may be
faulty.
If the reading from the jack is
OK, then the terminal cord may
be faulty.
Isolate part of the wiring span,
either to the switch or to the
terminal
Table 58, LED indications for the LA85 port
Maintenance Procedures
December 2003