NEC DS1000 Correspondence Course Workbook

DS1000/2000 Correspondence Course
DS1000 System Installation
48 ◆ DS1000/2000 Workbook NEC America
❏ Remove the Top Panel.
You must remove the top panel in order to install the system battery and
Expansion Board.
1. Be sure your system’s power cord is unplugged, then unscrew the 2 cap-
tive screws that secure the cabinet top panel to the base.
2. Lift up the top panel as shown below.
3. Remove the top panel.
❏ Install the Battery.
In the event of commercial
AC power failure, the bat-
tery provides short-term
backup of system memory
and the system time and
date (Real Time Clock).
The battery will hold
memory and time and date
for up to 10-14 days.
1. Insert the battery into
the battery clips as
shown at right.
8
0
2
0
0
-
4
-
0
1
1
2
3
80200 -27
Battery

NEC DS1000 Specifications

General

Brand	NEC
Model	DS1000
Category	Telephone
Language	English