NEC UX5000 - Troubleshooting; Basic Troubleshooting; Troubleshooting Digital Extensions

3 - 24 Chapter 3
Chapter 3 - Installing Extensions and Trunks
SECTION 3-14
TROUBLESHOOTING
3.14.1 Basic Troubleshooting
3.14.1.1 Troubleshooting Digital Extensions
Figure 3-14: Digital Extension Troubleshooting
Start
Verify the ESIU blade
is functioning.
Is the Live
Status LED on
the ESIU blade
flashing green?
Verify whether a digital
keyset works.
Connect a test
terminal to a port
using another
modular jack. Does
the terminal work?
Redo the wires between
the main equipment and
the modular jack.
Verify the wiring
between the chassis
and the keyset.
Connect the terminal
directly to the
connector on the
ESIU. Does it work?
Redo the wires between
the main equipment and
the terminal.
The terminal may
need repair.
Yes
No
No
Yes
Yes
* If it still does not work,
replace the cable(s) and/
or connectors.
Connect another
terminal to the
same port on the
ESIU. Does it work?
The ESIU blade may
need repair.
* If it still does not work,
replace the cable(s) and/
or connectors.
Yes
No
Check system
programming for the
extension. Refer to
the UX5000 Software
Manual if necessary.
Connect the terminal directly to
the connector on the ESIU.
Does it work?
No
Stop
Yes
Remove the blade and
insert another ESIU
blade into the same slot.
Does it work?
The ESIU blade may
need repair.
Main equipment
(chassis/CCPU) may
need repair.
Yes
No
Is the Live
Status LED solid
green, flashing
or off?
Main equipment
(chassis/CCPU) may
need repair.
On
Flashing
In Program 90-05, release the
Block on the blade and
recheck the terminal operation.
OffNo
Verify the connection
to the EXIFU if two
chassis are used.
If the Busy LED (red) is also
on, the blade is initializing. Wait
until LED status changes and recheck.
Does the terminal
work?
No
Stop
Yes