NEC DS1000 Correspondence Course Workbook page 82

DS1000/2000 Correspondence Course
DS2000 System Installation
82 DS1000/2000 Workbook
Install the battery on the CPU.
1. With the system power off,
slide the Mode Switch to the
RUN position.
The "+" on the battery
should face up.
2. Insert the battery into the bat-
tery clips.
Install the CPU in slot CN0 and
attach the ground wire.
The CPU provides:
The system's central processing,
stored program and memory for
the customer's site-specific data.
PC Card interface.
The PC Card does not need to
be installed in the CPU when
programming; it only needs to
be installed if you wish to back-
up or restore the site data.
Conference circuits, DTMF
receivers and DTMF generators.
External music input.
External paging output and
associated relay.
Real Time Clock
Battery for short term (14 day) backup of the customer's site-specific
data.
1. Following the figure to the right, run
the mod CPU connection cables
through the RFI Suppressor
Assembly as shown.
You must install separate RFI
Suppressor Assemblies for the
Mode Switch
Battery
4-Slot Cabinet Shown
NEC America