Installing An Electronic Telephone Unit (Etu); General Information; Figure 2-20: Installing A Vertically Mounted Etu - NEC Xen alpha Installation Manual

S 4
E C T I O N

General Information

I
NSTALLING AN
Installation Precautions
E
LECTRONIC
T
ELEPHONE
Before installation of the ETUs, observe the below precautions.
U (ETU)
NIT
1.
2.
ETU Installation
Be sure to mount the ETUs in the correct position inside the KSU. Make any
connections and switch settings on the ETUs before inserting them in the KSU. Also
refer to Figure 2-20: Installing a Vertically Mounted ETU, Pg 60.)
60
To prevent accidental damage to equipment, the power must be OFF during
installation and maintenance.
The ETUs used in this system make extensive use of CMOS technology. CMOS
technology is very susceptible to static; therefore extreme care must be taken to
avoid static discharge when handling ETUs.
When a ETU is installed or removed, ensure that the power switch of

Figure 2-20: Installing a Vertically Mounted ETU

CAUTION
the KSU is in the OFF position.
Installation Manual, Chapter 2 – KSU Installation
A6-506000-642-01(8508), Release 6.0, November 2003