NEC Australia Pty Ltd
Xen Master & Xen Axis
5 - 114
Installing Electronic Telephone Units
A6-3
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3.3.4
LED Indications
CPU LIVE indications are listed below.
✆
Blinking Red
Normal Operation
✆
Steady Red
Operation Stopped (power still on)
✆
Off
No Power
LED2 indications are listed below.
✆
Steady Red
System Power On
✆
Off
No Power
ESI LIVE
✆
Steady Red
ESI On
✆
Off
ESI Off
ESI Busy
✆
Steady Red
ESI Busy
✆
Off
ESI available
3.3.5
Replacing Memory Backup
The MBD( )-U13 ETU provides memory backup for
approximately 21 days. The Ni-Cad battery should be
replaced about every two years.
Refer to Figure 5-11 KSU Backup Battery Replacement.
Figure 5-11 KSU Backup Battery Replacement