CAUTION
•
Install or remove modules from the shelf only when the power is off.
If you install a module in the shelf with the power on, the internal
circuitry may suffer damage and the product warranty will be void.
•
Remove and install circuit boards only in a static-safe environment
(use antistatic wrist straps, smocks, footwear, etc.).
•
Keep circuit boards in their antistatic bags when they are not in use.
•
Do not ship or store circuit boards near strong electrostatic, electromag-
netic, magnetic, or radioactive fields.
•
For more complete information on electrostatic discharge safety
precautions, refer to Bellcore
TM
Technical Reference # TR-NWT-000870.
Copyright 1998 by Dantel, Inc. • Dantel is a registered trademark of Dantel, Inc. • ISO 9001 Registered
Printed in the U.S.A.
I
NSTALLATION
& O
PERATION
M
ANUAL
46131-0598 <90-00018>
46131 A
LARM
P
ROCESSING
U
NIT
(APU)
About this Practice:
This practice has been reissued to:
• Move Troubleshooting section to
inside the
Installation section.
• Document RS-485 capability on
the receive side of responder ports
1 and 2, and the 8 TBOS ports
(multiple references).
• Update discussion of port activity
monitoring in the
Installation and
Operation sections.
Issue date: May 1998
Reissued Practices: Updated and
new content can be identified by a
banner in the right margin.
UPDATED
Table of Contents
Ordering Information ........................................................................... 2
General Description .............................................................................. 2
Subassembly Installation ................................................................... 31
Circuit Board Replacement ................................................................ 35
Technical Specifications ..................................................................... 36
